We want the fixes here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
KernelVersion: 2.6.25
Contact: Sarah Sharp <sarah.a.sharp@intel.com>
Description:
- If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file
+ If CONFIG_PM_RUNTIME is enabled then this file
is present. When read, it returns the total time (in msec)
that the USB device has been connected to the machine. This
file is read-only.
KernelVersion: 2.6.25
Contact: Sarah Sharp <sarah.a.sharp@intel.com>
Description:
- If CONFIG_PM and CONFIG_USB_SUSPEND are enabled, then this file
+ If CONFIG_PM_RUNTIME is enabled then this file
is present. When read, it returns the total time (in msec)
that the USB device has been active, i.e. not in a suspended
state. This file is read-only.
Date: September 2011
Contact: Andiry Xu <andiry.xu@amd.com>
Description:
- If CONFIG_USB_SUSPEND is set and a USB 2.0 lpm-capable device
+ If CONFIG_PM_RUNTIME is set and a USB 2.0 lpm-capable device
is plugged in to a xHCI host which support link PM, it will
perform a LPM test; if the test is passed and host supports
USB2 hardware LPM (xHCI 1.0 feature), USB2 hardware LPM will
that indicate usb controller index
- vbus-supply: regulator for vbus
- disable-over-current: disable over current detect
+- external-vbus-divider: enables off-chip resistor divider for Vbus
Examples:
usb@02184000 { /* USB OTG */
fsl,usbphy = <&usbphy1>;
fsl,usbmisc = <&usbmisc 0>;
disable-over-current;
+ external-vbus-divider;
};
--- /dev/null
+OMAP HS USB EHCI controller
+
+This device is usually the child of the omap-usb-host
+Documentation/devicetree/bindings/mfd/omap-usb-host.txt
+
+Required properties:
+
+- compatible: should be "ti,ehci-omap"
+- reg: should contain one register range i.e. start and length
+- interrupts: description of the interrupt line
+
+Optional properties:
+
+- phys: list of phandles to PHY nodes.
+ This property is required if at least one of the ports are in
+ PHY mode i.e. OMAP_EHCI_PORT_MODE_PHY
+
+To specify the port mode, see
+Documentation/devicetree/bindings/mfd/omap-usb-host.txt
+
+Example for OMAP4:
+
+usbhsehci: ehci@4a064c00 {
+ compatible = "ti,ehci-omap", "usb-ehci";
+ reg = <0x4a064c00 0x400>;
+ interrupts = <0 77 0x4>;
+};
+
+&usbhsehci {
+ phys = <&hsusb1_phy 0 &hsusb3_phy>;
+};
+
--- /dev/null
+OMAP HS USB OHCI controller (OMAP3 and later)
+
+Required properties:
+
+- compatible: should be "ti,ohci-omap3"
+- reg: should contain one register range i.e. start and length
+- interrupts: description of the interrupt line
+
+Example for OMAP4:
+
+usbhsohci: ohci@4a064800 {
+ compatible = "ti,ohci-omap3", "usb-ohci";
+ reg = <0x4a064800 0x400>;
+ interrupts = <0 76 0x4>;
+};
'H' 40-4F sound/hdspm.h conflict!
'H' 40-4F sound/hdsp.h conflict!
'H' 90 sound/usb/usx2y/usb_stream.h
+'H' A0 uapi/linux/usb/cdc-wdm.h
'H' C0-F0 net/bluetooth/hci.h conflict!
'H' C0-DF net/bluetooth/hidp/hidp.h conflict!
'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict!
CONFIG_PM_RUNTIME). System PM support is present only if the kernel
was built with CONFIG_SUSPEND or CONFIG_HIBERNATION enabled.
+(Starting with the 3.10 kernel release, dynamic PM support for USB is
+present whenever the kernel was built with CONFIG_PM_RUNTIME enabled.
+The CONFIG_USB_SUSPEND option has been eliminated.)
+
What is Remote Wakeup?
----------------------
will not be affected.)
Setting the initial default idle-delay to -1 will prevent any
-autosuspend of any USB device. This is a simple alternative to
-disabling CONFIG_USB_SUSPEND and rebuilding the kernel, and it has the
-added benefit of allowing you to enable autosuspend for selected
-devices.
+autosuspend of any USB device. This has the benefit of allowing you
+then to enable autosuspend for selected devices.
Warnings
{
struct hid_device *hid = usb_get_intfdata(intf);
struct usbhid_device *usbhid = hid->driver_data;
- int status;
+ int status = 0;
bool driver_suspended = false;
if (PMSG_IS_AUTO(message)) {
}
} else {
- if (hid->driver && hid->driver->suspend) {
+ /* TODO: resume() might need to handle suspend failure */
+ if (hid->driver && hid->driver->suspend)
status = hid->driver->suspend(hid, message);
- if (status < 0)
- return status;
- }
driver_suspended = true;
spin_lock_irq(&usbhid->lock);
set_bit(HID_SUSPENDED, &usbhid->iofl);
spin_unlock_irq(&usbhid->lock);
- if (usbhid_wait_io(hid) < 0) {
+ if (usbhid_wait_io(hid) < 0)
status = -EIO;
- goto failed;
- }
}
hid_cancel_delayed_stuff(usbhid);
goto failed;
}
dev_dbg(&intf->dev, "suspend\n");
- return 0;
+ return status;
failed:
hid_resume_common(hid, driver_suspended);
goto error;
}
+ /*
+ * Both usbnet_suspend() and subdriver->suspend() MUST return 0
+ * in system sleep context, otherwise, the resume callback has
+ * to recover device from previous suspend failure.
+ */
ret = usbnet_suspend(intf, message);
if (ret < 0)
goto error;
struct qmi_wwan_state *info = (void *)&dev->data;
int ret;
+ /*
+ * Both usbnet_suspend() and subdriver->suspend() MUST return 0
+ * in system sleep context, otherwise, the resume callback has
+ * to recover device from previous suspend failure.
+ */
ret = usbnet_suspend(intf, message);
if (ret < 0)
goto err;
ret = smsc75xx_enter_suspend0(dev);
done:
- if (ret)
+ /*
+ * TODO: resume() might need to handle the suspend failure
+ * in system sleep
+ */
+ if (ret && PMSG_IS_AUTO(message))
usbnet_resume(intf);
return ret;
}
ret = smsc95xx_enter_suspend0(dev);
done:
- if (ret)
+ /*
+ * TODO: resume() might need to handle the suspend failure
+ * in system sleep
+ */
+ if (ret && PMSG_IS_AUTO(message))
usbnet_resume(intf);
return ret;
}
source "drivers/staging/ozwpan/Kconfig"
-source "drivers/staging/ccg/Kconfig"
-
source "drivers/staging/gdm72xx/Kconfig"
source "drivers/staging/csr/Kconfig"
obj-$(CONFIG_MFD_NVEC) += nvec/
obj-$(CONFIG_ANDROID) += android/
obj-$(CONFIG_USB_WPAN_HCD) += ozwpan/
-obj-$(CONFIG_USB_G_CCG) += ccg/
obj-$(CONFIG_WIMAX_GDM72XX) += gdm72xx/
obj-$(CONFIG_CSR_WIFI) += csr/
obj-$(CONFIG_OMAP_BANDGAP) += omap-thermal/
endif
ifneq ($(CONFIG_OF_DEVICE),)
- obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o usbmisc_imx6q.o
+ obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o usbmisc_imx.o
endif
/******************************************************************************
* DEFINE
*****************************************************************************/
+#define TD_PAGE_COUNT 5
#define CI13XXX_PAGE_SIZE 4096ul /* page size for TD's */
#define ENDPT_MAX 32
* @vbus_active: is VBUS active
* @transceiver: pointer to USB PHY, if any
* @hcd: pointer to usb_hcd for ehci host driver
+ * @debugfs: root dentry for this controller in debugfs
*/
struct ci13xxx {
struct device *dev;
enum ci_role role;
bool is_otg;
struct work_struct work;
- struct work_struct vbus_work;
struct workqueue_struct *wq;
struct dma_pool *qh_pool;
bool global_phy;
struct usb_phy *transceiver;
struct usb_hcd *hcd;
+ struct dentry *debugfs;
};
static inline struct ci_role_driver *ci_role(struct ci13xxx *ci)
OP_LAST = OP_ENDPTCTRL + ENDPT_MAX / 2,
};
-/**
- * ffs_nr: find first (least significant) bit set
- * @x: the word to search
- *
- * This function returns bit number (instead of position)
- */
-static inline int ffs_nr(u32 x)
-{
- int n = ffs(x);
-
- return n ? n-1 : 32;
-}
-
/**
* hw_read: reads from a hw register
* @reg: register index
u32 val = hw_read(ci, reg, ~0);
hw_write(ci, reg, mask, data);
- return (val & mask) >> ffs_nr(mask);
+ return (val & mask) >> __ffs(mask);
}
int hw_device_reset(struct ci13xxx *ci, u32 mode);
if (of_find_property(np, "disable-over-current", NULL))
usbdev->disable_oc = 1;
+ if (of_find_property(np, "external-vbus-divider", NULL))
+ usbdev->evdo = 1;
+
return 0;
}
EXPORT_SYMBOL_GPL(usbmisc_get_init_data);
goto err;
}
+ if (usbmisc_ops && usbmisc_ops->post) {
+ ret = usbmisc_ops->post(&pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "usbmisc post failed, ret=%d\n", ret);
+ goto put_np;
+ }
+ }
+
data->ci_pdev = plat_ci;
platform_set_drvdata(pdev, data);
struct usbmisc_ops {
/* It's called once when probe a usb device */
int (*init)(struct device *dev);
+ /* It's called once after adding a usb device */
+ int (*post)(struct device *dev);
};
struct usbmisc_usb_device {
int index;
unsigned int disable_oc:1; /* over current detect disabled */
+ unsigned int evdo:1; /* set external vbus divider option */
};
int usbmisc_set_ops(const struct usbmisc_ops *ops);
/******************************************************************************
* PCI block
*****************************************************************************/
-struct ci13xxx_platform_data pci_platdata = {
+static struct ci13xxx_platform_data pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = DEF_CAPOFFSET,
};
-struct ci13xxx_platform_data langwell_pci_platdata = {
+static struct ci13xxx_platform_data langwell_pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = 0,
};
-struct ci13xxx_platform_data penwell_pci_platdata = {
+static struct ci13xxx_platform_data penwell_pci_platdata = {
.name = UDC_DRIVER_NAME,
.capoffset = 0,
.power_budget = 200,
*/
#include <linux/delay.h>
#include <linux/device.h>
-#include <linux/dmapool.h>
#include <linux/dma-mapping.h>
-#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/io.h>
-#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
if (mode > TEST_MODE_MAX)
return -EINVAL;
- hw_write(ci, OP_PORTSC, PORTSC_PTC, mode << ffs_nr(PORTSC_PTC));
+ hw_write(ci, OP_PORTSC, PORTSC_PTC, mode << __ffs(PORTSC_PTC));
return 0;
}
*/
u8 hw_port_test_get(struct ci13xxx *ci)
{
- return hw_read(ci, OP_PORTSC, PORTSC_PTC) >> ffs_nr(PORTSC_PTC);
+ return hw_read(ci, OP_PORTSC, PORTSC_PTC) >> __ffs(PORTSC_PTC);
}
static int hw_device_init(struct ci13xxx *ci, void __iomem *base)
ci->hw_bank.cap = ci->hw_bank.abs;
ci->hw_bank.cap += ci->platdata->capoffset;
- ci->hw_bank.op = ci->hw_bank.cap + ioread8(ci->hw_bank.cap);
+ ci->hw_bank.op = ci->hw_bank.cap + (ioread32(ci->hw_bank.cap) & 0xff);
hw_alloc_regmap(ci, false);
reg = hw_read(ci, CAP_HCCPARAMS, HCCPARAMS_LEN) >>
- ffs_nr(HCCPARAMS_LEN);
+ __ffs(HCCPARAMS_LEN);
ci->hw_bank.lpm = reg;
hw_alloc_regmap(ci, !!reg);
ci->hw_bank.size = ci->hw_bank.op - ci->hw_bank.abs;
ci->hw_bank.size /= sizeof(u32);
reg = hw_read(ci, CAP_DCCPARAMS, DCCPARAMS_DEN) >>
- ffs_nr(DCCPARAMS_DEN);
+ __ffs(DCCPARAMS_DEN);
ci->hw_ep_max = reg * 2; /* cache hw ENDPT_MAX */
if (ci->hw_ep_max > ENDPT_MAX)
}
}
-static ssize_t show_role(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ci13xxx *ci = dev_get_drvdata(dev);
-
- return sprintf(buf, "%s\n", ci_role(ci)->name);
-}
-
-static ssize_t store_role(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ci13xxx *ci = dev_get_drvdata(dev);
- enum ci_role role;
- int ret;
-
- for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++)
- if (ci->roles[role] && !strcmp(buf, ci->roles[role]->name))
- break;
-
- if (role == CI_ROLE_END || role == ci->role)
- return -EINVAL;
-
- ci_role_stop(ci);
- ret = ci_role_start(ci, role);
- if (ret)
- return ret;
-
- return count;
-}
-
-static DEVICE_ATTR(role, S_IRUSR | S_IWUSR, show_role, store_role);
-
static irqreturn_t ci_irq(int irq, void *data)
{
struct ci13xxx *ci = data;
return -ENODEV;
}
- base = devm_request_and_ioremap(dev, res);
- if (!base) {
- dev_err(dev, "can't request and ioremap resource\n");
- return -ENOMEM;
- }
+ base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
ci = devm_kzalloc(dev, sizeof(*ci), GFP_KERNEL);
if (!ci) {
if (ret)
goto stop;
- ret = device_create_file(dev, &dev_attr_role);
- if (ret)
- goto rm_attr;
-
if (ci->is_otg)
hw_write(ci, OP_OTGSC, OTGSC_IDIE, OTGSC_IDIE);
- return ret;
+ ret = dbg_create_files(ci);
+ if (!ret)
+ return 0;
-rm_attr:
- device_remove_file(dev, &dev_attr_role);
+ free_irq(ci->irq, ci);
stop:
ci_role_stop(ci);
rm_wq:
{
struct ci13xxx *ci = platform_get_drvdata(pdev);
+ dbg_remove_files(ci);
flush_workqueue(ci->wq);
destroy_workqueue(ci->wq);
- device_remove_file(ci->dev, &dev_attr_role);
free_irq(ci->irq, ci);
ci_role_stop(ci);
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/dmapool.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/pm_runtime.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/chipidea.h>
#include "ci.h"
#include "udc.h"
#include "bits.h"
#include "debug.h"
-/* Interrupt statistics */
-#define ISR_MASK 0x1F
-static struct isr_statistics {
- u32 test;
- u32 ui;
- u32 uei;
- u32 pci;
- u32 uri;
- u32 sli;
- u32 none;
- struct {
- u32 cnt;
- u32 buf[ISR_MASK+1];
- u32 idx;
- } hndl;
-} isr_statistics;
-
-void dbg_interrupt(u32 intmask)
-{
- if (!intmask) {
- isr_statistics.none++;
- return;
- }
-
- isr_statistics.hndl.buf[isr_statistics.hndl.idx++] = intmask;
- isr_statistics.hndl.idx &= ISR_MASK;
- isr_statistics.hndl.cnt++;
-
- if (USBi_URI & intmask)
- isr_statistics.uri++;
- if (USBi_PCI & intmask)
- isr_statistics.pci++;
- if (USBi_UEI & intmask)
- isr_statistics.uei++;
- if (USBi_UI & intmask)
- isr_statistics.ui++;
- if (USBi_SLI & intmask)
- isr_statistics.sli++;
-}
-
/**
- * hw_register_read: reads all device registers (execute without interruption)
- * @buf: destination buffer
- * @size: buffer size
- *
- * This function returns number of registers read
+ * ci_device_show: prints information about device capabilities and status
*/
-static size_t hw_register_read(struct ci13xxx *ci, u32 *buf, size_t size)
+static int ci_device_show(struct seq_file *s, void *data)
{
- unsigned i;
-
- if (size > ci->hw_bank.size)
- size = ci->hw_bank.size;
-
- for (i = 0; i < size; i++)
- buf[i] = hw_read(ci, i * sizeof(u32), ~0);
-
- return size;
-}
-
-/**
- * hw_register_write: writes to register
- * @addr: register address
- * @data: register value
- *
- * This function returns an error code
- */
-static int hw_register_write(struct ci13xxx *ci, u16 addr, u32 data)
-{
- /* align */
- addr /= sizeof(u32);
-
- if (addr >= ci->hw_bank.size)
- return -EINVAL;
-
- /* align */
- addr *= sizeof(u32);
-
- hw_write(ci, addr, ~0, data);
- return 0;
-}
-
-/**
- * hw_intr_clear: disables interrupt & clears interrupt status (execute without
- * interruption)
- * @n: interrupt bit
- *
- * This function returns an error code
- */
-static int hw_intr_clear(struct ci13xxx *ci, int n)
-{
- if (n >= REG_BITS)
- return -EINVAL;
-
- hw_write(ci, OP_USBINTR, BIT(n), 0);
- hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
- return 0;
-}
-
-/**
- * hw_intr_force: enables interrupt & forces interrupt status (execute without
- * interruption)
- * @n: interrupt bit
- *
- * This function returns an error code
- */
-static int hw_intr_force(struct ci13xxx *ci, int n)
-{
- if (n >= REG_BITS)
- return -EINVAL;
-
- hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
- hw_write(ci, OP_USBINTR, BIT(n), BIT(n));
- hw_write(ci, OP_USBSTS, BIT(n), BIT(n));
- hw_write(ci, CAP_TESTMODE, TESTMODE_FORCE, 0);
- return 0;
-}
-
-/**
- * show_device: prints information about device capabilities and status
- *
- * Check "device.h" for details
- */
-static ssize_t show_device(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
struct usb_gadget *gadget = &ci->gadget;
- int n = 0;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
+ seq_printf(s, "speed = %d\n", gadget->speed);
+ seq_printf(s, "max_speed = %d\n", gadget->max_speed);
+ seq_printf(s, "is_otg = %d\n", gadget->is_otg);
+ seq_printf(s, "is_a_peripheral = %d\n", gadget->is_a_peripheral);
+ seq_printf(s, "b_hnp_enable = %d\n", gadget->b_hnp_enable);
+ seq_printf(s, "a_hnp_support = %d\n", gadget->a_hnp_support);
+ seq_printf(s, "a_alt_hnp_support = %d\n", gadget->a_alt_hnp_support);
+ seq_printf(s, "name = %s\n",
+ (gadget->name ? gadget->name : ""));
+
+ if (!ci->driver)
return 0;
- }
-
- n += scnprintf(buf + n, PAGE_SIZE - n, "speed = %d\n",
- gadget->speed);
- n += scnprintf(buf + n, PAGE_SIZE - n, "max_speed = %d\n",
- gadget->max_speed);
- n += scnprintf(buf + n, PAGE_SIZE - n, "is_otg = %d\n",
- gadget->is_otg);
- n += scnprintf(buf + n, PAGE_SIZE - n, "is_a_peripheral = %d\n",
- gadget->is_a_peripheral);
- n += scnprintf(buf + n, PAGE_SIZE - n, "b_hnp_enable = %d\n",
- gadget->b_hnp_enable);
- n += scnprintf(buf + n, PAGE_SIZE - n, "a_hnp_support = %d\n",
- gadget->a_hnp_support);
- n += scnprintf(buf + n, PAGE_SIZE - n, "a_alt_hnp_support = %d\n",
- gadget->a_alt_hnp_support);
- n += scnprintf(buf + n, PAGE_SIZE - n, "name = %s\n",
- (gadget->name ? gadget->name : ""));
-
- return n;
-}
-static DEVICE_ATTR(device, S_IRUSR, show_device, NULL);
-
-/**
- * show_driver: prints information about attached gadget (if any)
- *
- * Check "device.h" for details
- */
-static ssize_t show_driver(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- struct usb_gadget_driver *driver = ci->driver;
- int n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
-
- if (driver == NULL)
- return scnprintf(buf, PAGE_SIZE,
- "There is no gadget attached!\n");
- n += scnprintf(buf + n, PAGE_SIZE - n, "function = %s\n",
- (driver->function ? driver->function : ""));
- n += scnprintf(buf + n, PAGE_SIZE - n, "max speed = %d\n",
- driver->max_speed);
+ seq_printf(s, "gadget function = %s\n",
+ (ci->driver->function ? ci->driver->function : ""));
+ seq_printf(s, "gadget max speed = %d\n", ci->driver->max_speed);
- return n;
-}
-static DEVICE_ATTR(driver, S_IRUSR, show_driver, NULL);
-
-/* Maximum event message length */
-#define DBG_DATA_MSG 64UL
-
-/* Maximum event messages */
-#define DBG_DATA_MAX 128UL
-
-/* Event buffer descriptor */
-static struct {
- char (buf[DBG_DATA_MAX])[DBG_DATA_MSG]; /* buffer */
- unsigned idx; /* index */
- unsigned tty; /* print to console? */
- rwlock_t lck; /* lock */
-} dbg_data = {
- .idx = 0,
- .tty = 0,
- .lck = __RW_LOCK_UNLOCKED(dbg_data.lck)
-};
-
-/**
- * dbg_dec: decrements debug event index
- * @idx: buffer index
- */
-static void dbg_dec(unsigned *idx)
-{
- *idx = (*idx - 1) & (DBG_DATA_MAX-1);
-}
-
-/**
- * dbg_inc: increments debug event index
- * @idx: buffer index
- */
-static void dbg_inc(unsigned *idx)
-{
- *idx = (*idx + 1) & (DBG_DATA_MAX-1);
-}
-
-/**
- * dbg_print: prints the common part of the event
- * @addr: endpoint address
- * @name: event name
- * @status: status
- * @extra: extra information
- */
-static void dbg_print(u8 addr, const char *name, int status, const char *extra)
-{
- struct timeval tval;
- unsigned int stamp;
- unsigned long flags;
-
- write_lock_irqsave(&dbg_data.lck, flags);
-
- do_gettimeofday(&tval);
- stamp = tval.tv_sec & 0xFFFF; /* 2^32 = 4294967296. Limit to 4096s */
- stamp = stamp * 1000000 + tval.tv_usec;
-
- scnprintf(dbg_data.buf[dbg_data.idx], DBG_DATA_MSG,
- "%04X\t? %02X %-7.7s %4i ?\t%s\n",
- stamp, addr, name, status, extra);
-
- dbg_inc(&dbg_data.idx);
-
- write_unlock_irqrestore(&dbg_data.lck, flags);
-
- if (dbg_data.tty != 0)
- pr_notice("%04X\t? %02X %-7.7s %4i ?\t%s\n",
- stamp, addr, name, status, extra);
-}
-
-/**
- * dbg_done: prints a DONE event
- * @addr: endpoint address
- * @td: transfer descriptor
- * @status: status
- */
-void dbg_done(u8 addr, const u32 token, int status)
-{
- char msg[DBG_DATA_MSG];
-
- scnprintf(msg, sizeof(msg), "%d %02X",
- (int)(token & TD_TOTAL_BYTES) >> ffs_nr(TD_TOTAL_BYTES),
- (int)(token & TD_STATUS) >> ffs_nr(TD_STATUS));
- dbg_print(addr, "DONE", status, msg);
-}
-
-/**
- * dbg_event: prints a generic event
- * @addr: endpoint address
- * @name: event name
- * @status: status
- */
-void dbg_event(u8 addr, const char *name, int status)
-{
- if (name != NULL)
- dbg_print(addr, name, status, "");
-}
-
-/*
- * dbg_queue: prints a QUEUE event
- * @addr: endpoint address
- * @req: USB request
- * @status: status
- */
-void dbg_queue(u8 addr, const struct usb_request *req, int status)
-{
- char msg[DBG_DATA_MSG];
-
- if (req != NULL) {
- scnprintf(msg, sizeof(msg),
- "%d %d", !req->no_interrupt, req->length);
- dbg_print(addr, "QUEUE", status, msg);
- }
-}
-
-/**
- * dbg_setup: prints a SETUP event
- * @addr: endpoint address
- * @req: setup request
- */
-void dbg_setup(u8 addr, const struct usb_ctrlrequest *req)
-{
- char msg[DBG_DATA_MSG];
-
- if (req != NULL) {
- scnprintf(msg, sizeof(msg),
- "%02X %02X %04X %04X %d", req->bRequestType,
- req->bRequest, le16_to_cpu(req->wValue),
- le16_to_cpu(req->wIndex), le16_to_cpu(req->wLength));
- dbg_print(addr, "SETUP", 0, msg);
- }
+ return 0;
}
-/**
- * show_events: displays the event buffer
- *
- * Check "device.h" for details
- */
-static ssize_t show_events(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_device_open(struct inode *inode, struct file *file)
{
- unsigned long flags;
- unsigned i, j, n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(dev->parent, "[%s] EINVAL\n", __func__);
- return 0;
- }
-
- read_lock_irqsave(&dbg_data.lck, flags);
-
- i = dbg_data.idx;
- for (dbg_dec(&i); i != dbg_data.idx; dbg_dec(&i)) {
- n += strlen(dbg_data.buf[i]);
- if (n >= PAGE_SIZE) {
- n -= strlen(dbg_data.buf[i]);
- break;
- }
- }
- for (j = 0, dbg_inc(&i); j < n; dbg_inc(&i))
- j += scnprintf(buf + j, PAGE_SIZE - j,
- "%s", dbg_data.buf[i]);
-
- read_unlock_irqrestore(&dbg_data.lck, flags);
-
- return n;
+ return single_open(file, ci_device_show, inode->i_private);
}
-/**
- * store_events: configure if events are going to be also printed to console
- *
- * Check "device.h" for details
- */
-static ssize_t store_events(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned tty;
-
- if (attr == NULL || buf == NULL) {
- dev_err(dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
-
- if (sscanf(buf, "%u", &tty) != 1 || tty > 1) {
- dev_err(dev, "<1|0>: enable|disable console log\n");
- goto done;
- }
-
- dbg_data.tty = tty;
- dev_info(dev, "tty = %u", dbg_data.tty);
-
- done:
- return count;
-}
-static DEVICE_ATTR(events, S_IRUSR | S_IWUSR, show_events, store_events);
+static const struct file_operations ci_device_fops = {
+ .open = ci_device_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_inters: interrupt status, enable status and historic
- *
- * Check "device.h" for details
+ * ci_port_test_show: reads port test mode
*/
-static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_port_test_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
- u32 intr;
- unsigned i, j, n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
+ unsigned mode;
spin_lock_irqsave(&ci->lock, flags);
-
- /*n += scnprintf(buf + n, PAGE_SIZE - n,
- "status = %08x\n", hw_read_intr_status(ci));
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "enable = %08x\n", hw_read_intr_enable(ci));*/
-
- n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
- isr_statistics.test);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? ui = %d\n",
- isr_statistics.ui);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? uei = %d\n",
- isr_statistics.uei);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? pci = %d\n",
- isr_statistics.pci);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? uri = %d\n",
- isr_statistics.uri);
- n += scnprintf(buf + n, PAGE_SIZE - n, "? sli = %d\n",
- isr_statistics.sli);
- n += scnprintf(buf + n, PAGE_SIZE - n, "*none = %d\n",
- isr_statistics.none);
- n += scnprintf(buf + n, PAGE_SIZE - n, "*hndl = %d\n",
- isr_statistics.hndl.cnt);
-
- for (i = isr_statistics.hndl.idx, j = 0; j <= ISR_MASK; j++, i++) {
- i &= ISR_MASK;
- intr = isr_statistics.hndl.buf[i];
-
- if (USBi_UI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "ui ");
- intr &= ~USBi_UI;
- if (USBi_UEI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "uei ");
- intr &= ~USBi_UEI;
- if (USBi_PCI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "pci ");
- intr &= ~USBi_PCI;
- if (USBi_URI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "uri ");
- intr &= ~USBi_URI;
- if (USBi_SLI & intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "sli ");
- intr &= ~USBi_SLI;
- if (intr)
- n += scnprintf(buf + n, PAGE_SIZE - n, "??? ");
- if (isr_statistics.hndl.buf[i])
- n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
- }
-
+ mode = hw_port_test_get(ci);
spin_unlock_irqrestore(&ci->lock, flags);
- return n;
-}
-
-/**
- * store_inters: enable & force or disable an individual interrutps
- * (to be used for test purposes only)
- *
- * Check "device.h" for details
- */
-static ssize_t store_inters(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long flags;
- unsigned en, bit;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "EINVAL\n");
- goto done;
- }
+ seq_printf(s, "mode = %u\n", mode);
- if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) {
- dev_err(ci->dev, "<1|0> <bit>: enable|disable interrupt\n");
- goto done;
- }
-
- spin_lock_irqsave(&ci->lock, flags);
- if (en) {
- if (hw_intr_force(ci, bit))
- dev_err(dev, "invalid bit number\n");
- else
- isr_statistics.test++;
- } else {
- if (hw_intr_clear(ci, bit))
- dev_err(dev, "invalid bit number\n");
- }
- spin_unlock_irqrestore(&ci->lock, flags);
-
- done:
- return count;
+ return 0;
}
-static DEVICE_ATTR(inters, S_IRUSR | S_IWUSR, show_inters, store_inters);
/**
- * show_port_test: reads port test mode
- *
- * Check "device.h" for details
+ * ci_port_test_write: writes port test mode
*/
-static ssize_t show_port_test(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t ci_port_test_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct seq_file *s = file->private_data;
+ struct ci13xxx *ci = s->private;
unsigned long flags;
unsigned mode;
+ char buf[32];
+ int ret;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "EINVAL\n");
- return 0;
- }
+ if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (sscanf(buf, "%u", &mode) != 1)
+ return -EINVAL;
spin_lock_irqsave(&ci->lock, flags);
- mode = hw_port_test_get(ci);
+ ret = hw_port_test_set(ci, mode);
spin_unlock_irqrestore(&ci->lock, flags);
- return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode);
+ return ret ? ret : count;
}
-/**
- * store_port_test: writes port test mode
- *
- * Check "device.h" for details
- */
-static ssize_t store_port_test(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int ci_port_test_open(struct inode *inode, struct file *file)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long flags;
- unsigned mode;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
-
- if (sscanf(buf, "%u", &mode) != 1) {
- dev_err(ci->dev, "<mode>: set port test mode");
- goto done;
- }
-
- spin_lock_irqsave(&ci->lock, flags);
- if (hw_port_test_set(ci, mode))
- dev_err(ci->dev, "invalid mode\n");
- spin_unlock_irqrestore(&ci->lock, flags);
-
- done:
- return count;
+ return single_open(file, ci_port_test_show, inode->i_private);
}
-static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR,
- show_port_test, store_port_test);
+
+static const struct file_operations ci_port_test_fops = {
+ .open = ci_port_test_open,
+ .write = ci_port_test_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_qheads: DMA contents of all queue heads
- *
- * Check "device.h" for details
+ * ci_qheads_show: DMA contents of all queue heads
*/
-static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
- char *buf)
+static int ci_qheads_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
- unsigned i, j, n = 0;
+ unsigned i, j;
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
+ if (ci->role != CI_ROLE_GADGET) {
+ seq_printf(s, "not in gadget mode\n");
return 0;
}
struct ci13xxx_ep *mEpRx = &ci->ci13xxx_ep[i];
struct ci13xxx_ep *mEpTx =
&ci->ci13xxx_ep[i + ci->hw_ep_max/2];
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "EP=%02i: RX=%08X TX=%08X\n",
- i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
- for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++) {
- n += scnprintf(buf + n, PAGE_SIZE - n,
- " %04X: %08X %08X\n", j,
- *((u32 *)mEpRx->qh.ptr + j),
- *((u32 *)mEpTx->qh.ptr + j));
- }
+ seq_printf(s, "EP=%02i: RX=%08X TX=%08X\n",
+ i, (u32)mEpRx->qh.dma, (u32)mEpTx->qh.dma);
+ for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++)
+ seq_printf(s, " %04X: %08X %08X\n", j,
+ *((u32 *)mEpRx->qh.ptr + j),
+ *((u32 *)mEpTx->qh.ptr + j));
}
spin_unlock_irqrestore(&ci->lock, flags);
- return n;
+ return 0;
+}
+
+static int ci_qheads_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ci_qheads_show, inode->i_private);
}
-static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL);
+
+static const struct file_operations ci_qheads_fops = {
+ .open = ci_qheads_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
- * show_registers: dumps all registers
- *
- * Check "device.h" for details
+ * ci_requests_show: DMA contents of all requests currently queued (all endpts)
*/
-#define DUMP_ENTRIES 512
-static ssize_t show_registers(struct device *dev,
- struct device_attribute *attr, char *buf)
+static int ci_requests_show(struct seq_file *s, void *data)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
+ struct ci13xxx *ci = s->private;
unsigned long flags;
- u32 *dump;
- unsigned i, k, n = 0;
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
+ struct list_head *ptr = NULL;
+ struct ci13xxx_req *req = NULL;
+ unsigned i, j, qsize = sizeof(struct ci13xxx_td)/sizeof(u32);
- dump = kmalloc(sizeof(u32) * DUMP_ENTRIES, GFP_KERNEL);
- if (!dump) {
- dev_err(ci->dev, "%s: out of memory\n", __func__);
+ if (ci->role != CI_ROLE_GADGET) {
+ seq_printf(s, "not in gadget mode\n");
return 0;
}
spin_lock_irqsave(&ci->lock, flags);
- k = hw_register_read(ci, dump, DUMP_ENTRIES);
- spin_unlock_irqrestore(&ci->lock, flags);
+ for (i = 0; i < ci->hw_ep_max; i++)
+ list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue) {
+ req = list_entry(ptr, struct ci13xxx_req, queue);
- for (i = 0; i < k; i++) {
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "reg[0x%04X] = 0x%08X\n",
- i * (unsigned)sizeof(u32), dump[i]);
- }
- kfree(dump);
+ seq_printf(s, "EP=%02i: TD=%08X %s\n",
+ i % (ci->hw_ep_max / 2), (u32)req->dma,
+ ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
+
+ for (j = 0; j < qsize; j++)
+ seq_printf(s, " %04X: %08X\n", j,
+ *((u32 *)req->ptr + j));
+ }
+ spin_unlock_irqrestore(&ci->lock, flags);
- return n;
+ return 0;
}
-/**
- * store_registers: writes value to register address
- *
- * Check "device.h" for details
- */
-static ssize_t store_registers(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int ci_requests_open(struct inode *inode, struct file *file)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long addr, data, flags;
+ return single_open(file, ci_requests_show, inode->i_private);
+}
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- goto done;
- }
+static const struct file_operations ci_requests_fops = {
+ .open = ci_requests_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
- if (sscanf(buf, "%li %li", &addr, &data) != 2) {
- dev_err(ci->dev,
- "<addr> <data>: write data to register address\n");
- goto done;
- }
+static int ci_role_show(struct seq_file *s, void *data)
+{
+ struct ci13xxx *ci = s->private;
- spin_lock_irqsave(&ci->lock, flags);
- if (hw_register_write(ci, addr, data))
- dev_err(ci->dev, "invalid address range\n");
- spin_unlock_irqrestore(&ci->lock, flags);
+ seq_printf(s, "%s\n", ci_role(ci)->name);
- done:
- return count;
+ return 0;
}
-static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR,
- show_registers, store_registers);
-/**
- * show_requests: DMA contents of all requests currently queued (all endpts)
- *
- * Check "device.h" for details
- */
-static ssize_t show_requests(struct device *dev, struct device_attribute *attr,
- char *buf)
+static ssize_t ci_role_write(struct file *file, const char __user *ubuf,
+ size_t count, loff_t *ppos)
{
- struct ci13xxx *ci = container_of(dev, struct ci13xxx, gadget.dev);
- unsigned long flags;
- struct list_head *ptr = NULL;
- struct ci13xxx_req *req = NULL;
- unsigned i, j, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32);
-
- if (attr == NULL || buf == NULL) {
- dev_err(ci->dev, "[%s] EINVAL\n", __func__);
- return 0;
- }
+ struct seq_file *s = file->private_data;
+ struct ci13xxx *ci = s->private;
+ enum ci_role role;
+ char buf[8];
+ int ret;
+
+ if (copy_from_user(buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++)
+ if (ci->roles[role] &&
+ !strncmp(buf, ci->roles[role]->name,
+ strlen(ci->roles[role]->name)))
+ break;
- spin_lock_irqsave(&ci->lock, flags);
- for (i = 0; i < ci->hw_ep_max; i++)
- list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue)
- {
- req = list_entry(ptr, struct ci13xxx_req, queue);
+ if (role == CI_ROLE_END || role == ci->role)
+ return -EINVAL;
- n += scnprintf(buf + n, PAGE_SIZE - n,
- "EP=%02i: TD=%08X %s\n",
- i % ci->hw_ep_max/2, (u32)req->dma,
- ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
+ ci_role_stop(ci);
+ ret = ci_role_start(ci, role);
- for (j = 0; j < qSize; j++)
- n += scnprintf(buf + n, PAGE_SIZE - n,
- " %04X: %08X\n", j,
- *((u32 *)req->ptr + j));
- }
- spin_unlock_irqrestore(&ci->lock, flags);
+ return ret ? ret : count;
+}
- return n;
+static int ci_role_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ci_role_show, inode->i_private);
}
-static DEVICE_ATTR(requests, S_IRUSR, show_requests, NULL);
+
+static const struct file_operations ci_role_fops = {
+ .open = ci_role_open,
+ .write = ci_role_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
/**
* dbg_create_files: initializes the attribute interface
- * @dev: device
+ * @ci: device
*
* This function returns an error code
*/
-int dbg_create_files(struct device *dev)
+int dbg_create_files(struct ci13xxx *ci)
{
- int retval = 0;
-
- if (dev == NULL)
- return -EINVAL;
- retval = device_create_file(dev, &dev_attr_device);
- if (retval)
- goto done;
- retval = device_create_file(dev, &dev_attr_driver);
- if (retval)
- goto rm_device;
- retval = device_create_file(dev, &dev_attr_events);
- if (retval)
- goto rm_driver;
- retval = device_create_file(dev, &dev_attr_inters);
- if (retval)
- goto rm_events;
- retval = device_create_file(dev, &dev_attr_port_test);
- if (retval)
- goto rm_inters;
- retval = device_create_file(dev, &dev_attr_qheads);
- if (retval)
- goto rm_port_test;
- retval = device_create_file(dev, &dev_attr_registers);
- if (retval)
- goto rm_qheads;
- retval = device_create_file(dev, &dev_attr_requests);
- if (retval)
- goto rm_registers;
- return 0;
-
- rm_registers:
- device_remove_file(dev, &dev_attr_registers);
- rm_qheads:
- device_remove_file(dev, &dev_attr_qheads);
- rm_port_test:
- device_remove_file(dev, &dev_attr_port_test);
- rm_inters:
- device_remove_file(dev, &dev_attr_inters);
- rm_events:
- device_remove_file(dev, &dev_attr_events);
- rm_driver:
- device_remove_file(dev, &dev_attr_driver);
- rm_device:
- device_remove_file(dev, &dev_attr_device);
- done:
- return retval;
+ struct dentry *dent;
+
+ ci->debugfs = debugfs_create_dir(dev_name(ci->dev), NULL);
+ if (!ci->debugfs)
+ return -ENOMEM;
+
+ dent = debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,
+ &ci_device_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs,
+ ci, &ci_port_test_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,
+ &ci_qheads_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,
+ &ci_requests_fops);
+ if (!dent)
+ goto err;
+
+ dent = debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,
+ &ci_role_fops);
+ if (dent)
+ return 0;
+err:
+ debugfs_remove_recursive(ci->debugfs);
+ return -ENOMEM;
}
/**
* dbg_remove_files: destroys the attribute interface
- * @dev: device
- *
- * This function returns an error code
+ * @ci: device
*/
-int dbg_remove_files(struct device *dev)
+void dbg_remove_files(struct ci13xxx *ci)
{
- if (dev == NULL)
- return -EINVAL;
- device_remove_file(dev, &dev_attr_requests);
- device_remove_file(dev, &dev_attr_registers);
- device_remove_file(dev, &dev_attr_qheads);
- device_remove_file(dev, &dev_attr_port_test);
- device_remove_file(dev, &dev_attr_inters);
- device_remove_file(dev, &dev_attr_events);
- device_remove_file(dev, &dev_attr_driver);
- device_remove_file(dev, &dev_attr_device);
- return 0;
+ debugfs_remove_recursive(ci->debugfs);
}
#define __DRIVERS_USB_CHIPIDEA_DEBUG_H
#ifdef CONFIG_USB_CHIPIDEA_DEBUG
-void dbg_interrupt(u32 intmask);
-void dbg_done(u8 addr, const u32 token, int status);
-void dbg_event(u8 addr, const char *name, int status);
-void dbg_queue(u8 addr, const struct usb_request *req, int status);
-void dbg_setup(u8 addr, const struct usb_ctrlrequest *req);
-int dbg_create_files(struct device *dev);
-int dbg_remove_files(struct device *dev);
+int dbg_create_files(struct ci13xxx *ci);
+void dbg_remove_files(struct ci13xxx *ci);
#else
-static inline void dbg_interrupt(u32 intmask)
-{
-}
-
-static inline void dbg_done(u8 addr, const u32 token, int status)
-{
-}
-
-static inline void dbg_event(u8 addr, const char *name, int status)
-{
-}
-
-static inline void dbg_queue(u8 addr, const struct usb_request *req, int status)
-{
-}
-
-static inline void dbg_setup(u8 addr, const struct usb_ctrlrequest *req)
-{
-}
-
-static inline int dbg_create_files(struct device *dev)
+static inline int dbg_create_files(struct ci13xxx *ci)
{
return 0;
}
-static inline int dbg_remove_files(struct device *dev)
+static inline void dbg_remove_files(struct ci13xxx *ci)
{
- return 0;
}
#endif
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dmapool.h>
-#include <linux/dma-mapping.h>
#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
+#include <linux/irqreturn.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
if (dir) {
mask = ENDPTCTRL_TXT; /* type */
- data = type << ffs_nr(mask);
+ data = type << __ffs(mask);
mask |= ENDPTCTRL_TXS; /* unstall */
mask |= ENDPTCTRL_TXR; /* reset data toggle */
data |= ENDPTCTRL_TXE;
} else {
mask = ENDPTCTRL_RXT; /* type */
- data = type << ffs_nr(mask);
+ data = type << __ffs(mask);
mask |= ENDPTCTRL_RXS; /* unstall */
mask |= ENDPTCTRL_RXR; /* reset data toggle */
return reg;
}
-static void hw_enable_vbus_intr(struct ci13xxx *ci)
-{
- hw_write(ci, OP_OTGSC, OTGSC_AVVIS, OTGSC_AVVIS);
- hw_write(ci, OP_OTGSC, OTGSC_AVVIE, OTGSC_AVVIE);
- queue_work(ci->wq, &ci->vbus_work);
-}
-
-static void hw_disable_vbus_intr(struct ci13xxx *ci)
-{
- hw_write(ci, OP_OTGSC, OTGSC_AVVIE, 0);
-}
-
/**
* hw_test_and_clear_setup_guard: test & clear setup guard (execute without
* interruption)
static void hw_usb_set_address(struct ci13xxx *ci, u8 value)
{
hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR,
- value << ffs_nr(DEVICEADDR_USBADR));
+ value << __ffs(DEVICEADDR_USBADR));
}
/**
return 0;
}
-static void vbus_work(struct work_struct *work)
-{
- struct ci13xxx *ci = container_of(work, struct ci13xxx, vbus_work);
-
- if (hw_read(ci, OP_OTGSC, OTGSC_AVV))
- usb_gadget_vbus_connect(&ci->gadget);
- else
- usb_gadget_vbus_disconnect(&ci->gadget);
-}
-
/******************************************************************************
* UTIL block
*****************************************************************************/
return -ENOMEM;
memset(mReq->zptr, 0, sizeof(*mReq->zptr));
- mReq->zptr->next = TD_TERMINATE;
- mReq->zptr->token = TD_STATUS_ACTIVE;
+ mReq->zptr->next = cpu_to_le32(TD_TERMINATE);
+ mReq->zptr->token = cpu_to_le32(TD_STATUS_ACTIVE);
if (!mReq->req.no_interrupt)
- mReq->zptr->token |= TD_IOC;
+ mReq->zptr->token |= cpu_to_le32(TD_IOC);
}
ret = usb_gadget_map_request(&ci->gadget, &mReq->req, mEp->dir);
if (ret)
* TODO - handle requests which spawns into several TDs
*/
memset(mReq->ptr, 0, sizeof(*mReq->ptr));
- mReq->ptr->token = length << ffs_nr(TD_TOTAL_BYTES);
- mReq->ptr->token &= TD_TOTAL_BYTES;
- mReq->ptr->token |= TD_STATUS_ACTIVE;
+ mReq->ptr->token = cpu_to_le32(length << __ffs(TD_TOTAL_BYTES));
+ mReq->ptr->token &= cpu_to_le32(TD_TOTAL_BYTES);
+ mReq->ptr->token |= cpu_to_le32(TD_STATUS_ACTIVE);
if (mReq->zptr) {
- mReq->ptr->next = mReq->zdma;
+ mReq->ptr->next = cpu_to_le32(mReq->zdma);
} else {
- mReq->ptr->next = TD_TERMINATE;
+ mReq->ptr->next = cpu_to_le32(TD_TERMINATE);
if (!mReq->req.no_interrupt)
- mReq->ptr->token |= TD_IOC;
+ mReq->ptr->token |= cpu_to_le32(TD_IOC);
+ }
+ mReq->ptr->page[0] = cpu_to_le32(mReq->req.dma);
+ for (i = 1; i < TD_PAGE_COUNT; i++) {
+ u32 page = mReq->req.dma + i * CI13XXX_PAGE_SIZE;
+ page &= ~TD_RESERVED_MASK;
+ mReq->ptr->page[i] = cpu_to_le32(page);
}
- mReq->ptr->page[0] = mReq->req.dma;
- for (i = 1; i < 5; i++)
- mReq->ptr->page[i] =
- (mReq->req.dma + i * CI13XXX_PAGE_SIZE) & ~TD_RESERVED_MASK;
if (!list_empty(&mEp->qh.queue)) {
struct ci13xxx_req *mReqPrev;
int n = hw_ep_bit(mEp->num, mEp->dir);
int tmp_stat;
+ u32 next = mReq->dma & TD_ADDR_MASK;
mReqPrev = list_entry(mEp->qh.queue.prev,
struct ci13xxx_req, queue);
if (mReqPrev->zptr)
- mReqPrev->zptr->next = mReq->dma & TD_ADDR_MASK;
+ mReqPrev->zptr->next = cpu_to_le32(next);
else
- mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK;
+ mReqPrev->ptr->next = cpu_to_le32(next);
wmb();
if (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
goto done;
}
/* QH configuration */
- mEp->qh.ptr->td.next = mReq->dma; /* TERMINATE = 0 */
- mEp->qh.ptr->td.token &= ~TD_STATUS; /* clear status */
- mEp->qh.ptr->cap |= QH_ZLT;
+ mEp->qh.ptr->td.next = cpu_to_le32(mReq->dma); /* TERMINATE = 0 */
+ mEp->qh.ptr->td.token &=
+ cpu_to_le32(~(TD_STATUS_HALTED|TD_STATUS_ACTIVE));
wmb(); /* synchronize before ep prime */
*/
static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
{
+ u32 tmptoken = le32_to_cpu(mReq->ptr->token);
+
if (mReq->req.status != -EALREADY)
return -EINVAL;
- if ((TD_STATUS_ACTIVE & mReq->ptr->token) != 0)
+ if ((TD_STATUS_ACTIVE & tmptoken) != 0)
return -EBUSY;
if (mReq->zptr) {
- if ((TD_STATUS_ACTIVE & mReq->zptr->token) != 0)
+ if ((cpu_to_le32(TD_STATUS_ACTIVE) & mReq->zptr->token) != 0)
return -EBUSY;
dma_pool_free(mEp->td_pool, mReq->zptr, mReq->zdma);
mReq->zptr = NULL;
usb_gadget_unmap_request(&mEp->ci->gadget, &mReq->req, mEp->dir);
- mReq->req.status = mReq->ptr->token & TD_STATUS;
+ mReq->req.status = tmptoken & TD_STATUS;
if ((TD_STATUS_HALTED & mReq->req.status) != 0)
mReq->req.status = -1;
else if ((TD_STATUS_DT_ERR & mReq->req.status) != 0)
else if ((TD_STATUS_TR_ERR & mReq->req.status) != 0)
mReq->req.status = -1;
- mReq->req.actual = mReq->ptr->token & TD_TOTAL_BYTES;
- mReq->req.actual >>= ffs_nr(TD_TOTAL_BYTES);
+ mReq->req.actual = tmptoken & TD_TOTAL_BYTES;
+ mReq->req.actual >>= __ffs(TD_TOTAL_BYTES);
mReq->req.actual = mReq->req.length - mReq->req.actual;
mReq->req.actual = mReq->req.status ? 0 : mReq->req.actual;
{
int retval;
- dbg_event(0xFF, "BUS RST", 0);
-
spin_unlock(&ci->lock);
retval = _gadget_stop_activity(&ci->gadget);
if (retval)
usb_ep_free_request(ep, req);
}
+/**
+ * _ep_queue: queues (submits) an I/O request to an endpoint
+ *
+ * Caller must hold lock
+ */
+static int _ep_queue(struct usb_ep *ep, struct usb_request *req,
+ gfp_t __maybe_unused gfp_flags)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
+ struct ci13xxx *ci = mEp->ci;
+ int retval = 0;
+
+ if (ep == NULL || req == NULL || mEp->ep.desc == NULL)
+ return -EINVAL;
+
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
+ if (req->length)
+ mEp = (ci->ep0_dir == RX) ?
+ ci->ep0out : ci->ep0in;
+ if (!list_empty(&mEp->qh.queue)) {
+ _ep_nuke(mEp);
+ retval = -EOVERFLOW;
+ dev_warn(mEp->ci->dev, "endpoint ctrl %X nuked\n",
+ _usb_addr(mEp));
+ }
+ }
+
+ /* first nuke then test link, e.g. previous status has not sent */
+ if (!list_empty(&mReq->queue)) {
+ dev_err(mEp->ci->dev, "request already in queue\n");
+ return -EBUSY;
+ }
+
+ if (req->length > (TD_PAGE_COUNT - 1) * CI13XXX_PAGE_SIZE) {
+ dev_err(mEp->ci->dev, "request bigger than one td\n");
+ return -EMSGSIZE;
+ }
+
+ /* push request */
+ mReq->req.status = -EINPROGRESS;
+ mReq->req.actual = 0;
+
+ retval = _hardware_enqueue(mEp, mReq);
+
+ if (retval == -EALREADY)
+ retval = 0;
+ if (!retval)
+ list_add_tail(&mReq->queue, &mEp->qh.queue);
+
+ return retval;
+}
+
/**
* isr_get_status_response: get_status request response
* @ci: ci struct
}
/* else do nothing; reserved for future use */
- spin_unlock(mEp->lock);
- retval = usb_ep_queue(&mEp->ep, req, gfp_flags);
- spin_lock(mEp->lock);
+ retval = _ep_queue(&mEp->ep, req, gfp_flags);
if (retval)
goto err_free_buf;
* This function returns an error code
*/
static int isr_setup_status_phase(struct ci13xxx *ci)
-__releases(mEp->lock)
-__acquires(mEp->lock)
{
int retval;
struct ci13xxx_ep *mEp;
ci->status->context = ci;
ci->status->complete = isr_setup_status_complete;
- spin_unlock(mEp->lock);
- retval = usb_ep_queue(&mEp->ep, ci->status, GFP_ATOMIC);
- spin_lock(mEp->lock);
+ retval = _ep_queue(&mEp->ep, ci->status, GFP_ATOMIC);
return retval;
}
if (retval < 0)
break;
list_del_init(&mReq->queue);
- dbg_done(_usb_addr(mEp), mReq->ptr->token, retval);
if (mReq->req.complete != NULL) {
spin_unlock(mEp->lock);
if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) &&
if (retval == -EBUSY)
retval = 0;
- if (retval < 0)
- dbg_event(_usb_addr(mEp), "DONE", retval);
return retval;
}
if (err > 0) /* needs status phase */
err = isr_setup_status_phase(ci);
if (err < 0) {
- dbg_event(_usb_addr(mEp),
- "ERROR", err);
spin_unlock(&ci->lock);
if (usb_ep_set_halt(&mEp->ep))
dev_err(ci->dev,
ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
- dbg_setup(_usb_addr(mEp), &req);
-
switch (req.bRequest) {
case USB_REQ_CLEAR_FEATURE:
if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
}
if (err < 0) {
- dbg_event(_usb_addr(mEp), "ERROR", err);
-
spin_unlock(&ci->lock);
if (usb_ep_set_halt(&mEp->ep))
dev_err(ci->dev, "error: ep_set_halt\n");
struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
int retval = 0;
unsigned long flags;
+ u32 cap = 0;
if (ep == NULL || desc == NULL)
return -EINVAL;
mEp->ep.maxpacket = usb_endpoint_maxp(desc);
- dbg_event(_usb_addr(mEp), "ENABLE", 0);
-
- mEp->qh.ptr->cap = 0;
-
if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
- mEp->qh.ptr->cap |= QH_IOS;
- else if (mEp->type == USB_ENDPOINT_XFER_ISOC)
- mEp->qh.ptr->cap &= ~QH_MULT;
- else
- mEp->qh.ptr->cap &= ~QH_ZLT;
+ cap |= QH_IOS;
+ if (mEp->num)
+ cap |= QH_ZLT;
+ cap |= (mEp->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
+
+ mEp->qh.ptr->cap = cpu_to_le32(cap);
- mEp->qh.ptr->cap |=
- (mEp->ep.maxpacket << ffs_nr(QH_MAX_PKT)) & QH_MAX_PKT;
- mEp->qh.ptr->td.next |= TD_TERMINATE; /* needed? */
+ mEp->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */
/*
* Enable endpoints in the HW other than ep0 as ep0
direction = mEp->dir;
do {
- dbg_event(_usb_addr(mEp), "DISABLE", 0);
-
retval |= _ep_nuke(mEp);
retval |= hw_ep_disable(mEp->ci, mEp->num, mEp->dir);
}
}
- dbg_event(_usb_addr(mEp), "ALLOC", mReq == NULL);
-
return (mReq == NULL) ? NULL : &mReq->req;
}
dma_pool_free(mEp->td_pool, mReq->ptr, mReq->dma);
kfree(mReq);
- dbg_event(_usb_addr(mEp), "FREE", 0);
-
spin_unlock_irqrestore(mEp->lock, flags);
}
gfp_t __maybe_unused gfp_flags)
{
struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
- struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
- struct ci13xxx *ci = mEp->ci;
int retval = 0;
unsigned long flags;
return -EINVAL;
spin_lock_irqsave(mEp->lock, flags);
-
- if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
- if (req->length)
- mEp = (ci->ep0_dir == RX) ?
- ci->ep0out : ci->ep0in;
- if (!list_empty(&mEp->qh.queue)) {
- _ep_nuke(mEp);
- retval = -EOVERFLOW;
- dev_warn(mEp->ci->dev, "endpoint ctrl %X nuked\n",
- _usb_addr(mEp));
- }
- }
-
- /* first nuke then test link, e.g. previous status has not sent */
- if (!list_empty(&mReq->queue)) {
- retval = -EBUSY;
- dev_err(mEp->ci->dev, "request already in queue\n");
- goto done;
- }
-
- if (req->length > 4 * CI13XXX_PAGE_SIZE) {
- req->length = 4 * CI13XXX_PAGE_SIZE;
- retval = -EMSGSIZE;
- dev_warn(mEp->ci->dev, "request length truncated\n");
- }
-
- dbg_queue(_usb_addr(mEp), req, retval);
-
- /* push request */
- mReq->req.status = -EINPROGRESS;
- mReq->req.actual = 0;
-
- retval = _hardware_enqueue(mEp, mReq);
-
- if (retval == -EALREADY) {
- dbg_event(_usb_addr(mEp), "QUEUE", retval);
- retval = 0;
- }
- if (!retval)
- list_add_tail(&mReq->queue, &mEp->qh.queue);
-
- done:
+ retval = _ep_queue(ep, req, gfp_flags);
spin_unlock_irqrestore(mEp->lock, flags);
return retval;
}
spin_lock_irqsave(mEp->lock, flags);
- dbg_event(_usb_addr(mEp), "DEQUEUE", 0);
-
hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
/* pop request */
direction = mEp->dir;
do {
- dbg_event(_usb_addr(mEp), "HALT", value);
retval |= hw_ep_set_halt(mEp->ci, mEp->num, mEp->dir, value);
if (!value)
return -EINVAL;
spin_lock_irqsave(mEp->lock, flags);
-
- dbg_event(_usb_addr(mEp), "WEDGE", 0);
mEp->wedge = 1;
-
spin_unlock_irqrestore(mEp->lock, flags);
return usb_ep_set_halt(ep);
spin_lock_irqsave(mEp->lock, flags);
- dbg_event(_usb_addr(mEp), "FFLUSH", 0);
hw_ep_flush(mEp->ci, mEp->num, mEp->dir);
spin_unlock_irqrestore(mEp->lock, flags);
if (is_active) {
pm_runtime_get_sync(&_gadget->dev);
hw_device_reset(ci, USBMODE_CM_DC);
- hw_enable_vbus_intr(ci);
hw_device_state(ci, ci->ep0out->qh.dma);
} else {
hw_device_state(ci, 0);
pm_runtime_get_sync(&ci->gadget.dev);
if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) {
if (ci->vbus_active) {
- if (ci->platdata->flags & CI13XXX_REGS_SHARED) {
+ if (ci->platdata->flags & CI13XXX_REGS_SHARED)
hw_device_reset(ci, USBMODE_CM_DC);
- hw_enable_vbus_intr(ci);
- }
} else {
pm_runtime_put_sync(&ci->gadget.dev);
goto done;
}
}
intr = hw_test_and_clear_intr_active(ci);
- dbg_interrupt(intr);
if (intr) {
/* order defines priority - do NOT change it */
} else {
retval = IRQ_NONE;
}
-
- intr = hw_read(ci, OP_OTGSC, ~0);
- hw_write(ci, OP_OTGSC, ~0, intr);
-
- if (intr & (OTGSC_AVVIE & OTGSC_AVVIS))
- queue_work(ci->wq, &ci->vbus_work);
-
spin_unlock(&ci->lock);
return retval;
retval = hw_device_reset(ci, USBMODE_CM_DC);
if (retval)
goto put_transceiver;
- hw_enable_vbus_intr(ci);
}
retval = device_register(&ci->gadget.dev);
goto put_transceiver;
}
- retval = dbg_create_files(ci->dev);
- if (retval)
- goto unreg_device;
-
if (!IS_ERR_OR_NULL(ci->transceiver)) {
retval = otg_set_peripheral(ci->transceiver->otg,
&ci->gadget);
if (retval)
- goto remove_dbg;
+ goto unreg_device;
}
retval = usb_add_gadget_udc(dev, &ci->gadget);
}
dev_err(dev, "error = %i\n", retval);
-remove_dbg:
- dbg_remove_files(ci->dev);
unreg_device:
device_unregister(&ci->gadget.dev);
put_transceiver:
if (ci == NULL)
return;
- hw_disable_vbus_intr(ci);
- cancel_work_sync(&ci->vbus_work);
-
usb_del_gadget_udc(&ci->gadget);
destroy_eps(ci);
if (ci->global_phy)
usb_put_phy(ci->transceiver);
}
- dbg_remove_files(ci->dev);
device_unregister(&ci->gadget.dev);
/* my kobject is dynamic, I swear! */
memset(&ci->gadget, 0, sizeof(ci->gadget));
rdrv->irq = udc_irq;
rdrv->name = "gadget";
ci->roles[CI_ROLE_GADGET] = rdrv;
- INIT_WORK(&ci->vbus_work, vbus_work);
return 0;
}
--- /dev/null
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+
+#include "ci13xxx_imx.h"
+
+#define USB_DEV_MAX 4
+
+#define MX25_USB_PHY_CTRL_OFFSET 0x08
+#define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
+
+#define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08
+#define MX53_USB_UH2_CTRL_OFFSET 0x14
+#define MX53_USB_UH3_CTRL_OFFSET 0x18
+#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
+#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
+#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
+
+#define MX6_BM_OVER_CUR_DIS BIT(7)
+
+struct imx_usbmisc {
+ void __iomem *base;
+ spinlock_t lock;
+ struct clk *clk;
+ struct usbmisc_usb_device usbdev[USB_DEV_MAX];
+ const struct usbmisc_ops *ops;
+};
+
+static struct imx_usbmisc *usbmisc;
+
+static struct usbmisc_usb_device *get_usbdev(struct device *dev)
+{
+ int i, ret;
+
+ for (i = 0; i < USB_DEV_MAX; i++) {
+ if (usbmisc->usbdev[i].dev == dev)
+ return &usbmisc->usbdev[i];
+ else if (!usbmisc->usbdev[i].dev)
+ break;
+ }
+
+ if (i >= USB_DEV_MAX)
+ return ERR_PTR(-EBUSY);
+
+ ret = usbmisc_get_init_data(dev, &usbmisc->usbdev[i]);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return &usbmisc->usbdev[i];
+}
+
+static int usbmisc_imx25_post(struct device *dev)
+{
+ struct usbmisc_usb_device *usbdev;
+ void __iomem *reg;
+ unsigned long flags;
+ u32 val;
+
+ usbdev = get_usbdev(dev);
+ if (IS_ERR(usbdev))
+ return PTR_ERR(usbdev);
+
+ reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
+
+ if (usbdev->evdo) {
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ val = readl(reg);
+ writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+ usleep_range(5000, 10000); /* needed to stabilize voltage */
+ }
+
+ return 0;
+}
+
+static int usbmisc_imx53_init(struct device *dev)
+{
+ struct usbmisc_usb_device *usbdev;
+ void __iomem *reg = NULL;
+ unsigned long flags;
+ u32 val = 0;
+
+ usbdev = get_usbdev(dev);
+ if (IS_ERR(usbdev))
+ return PTR_ERR(usbdev);
+
+ if (usbdev->disable_oc) {
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ switch (usbdev->index) {
+ case 0:
+ reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
+ break;
+ case 1:
+ reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
+ break;
+ case 2:
+ reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
+ break;
+ case 3:
+ reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
+ val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
+ break;
+ }
+ if (reg && val)
+ writel(val, reg);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+ }
+
+ return 0;
+}
+
+static int usbmisc_imx6q_init(struct device *dev)
+{
+
+ struct usbmisc_usb_device *usbdev;
+ unsigned long flags;
+ u32 reg;
+
+ usbdev = get_usbdev(dev);
+ if (IS_ERR(usbdev))
+ return PTR_ERR(usbdev);
+
+ if (usbdev->disable_oc) {
+ spin_lock_irqsave(&usbmisc->lock, flags);
+ reg = readl(usbmisc->base + usbdev->index * 4);
+ writel(reg | MX6_BM_OVER_CUR_DIS,
+ usbmisc->base + usbdev->index * 4);
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+ }
+
+ return 0;
+}
+
+static const struct usbmisc_ops imx25_usbmisc_ops = {
+ .post = usbmisc_imx25_post,
+};
+
+static const struct usbmisc_ops imx53_usbmisc_ops = {
+ .init = usbmisc_imx53_init,
+};
+
+static const struct usbmisc_ops imx6q_usbmisc_ops = {
+ .init = usbmisc_imx6q_init,
+};
+
+static const struct of_device_id usbmisc_imx_dt_ids[] = {
+ {
+ .compatible = "fsl,imx25-usbmisc",
+ .data = &imx25_usbmisc_ops,
+ },
+ {
+ .compatible = "fsl,imx53-usbmisc",
+ .data = &imx53_usbmisc_ops,
+ },
+ {
+ .compatible = "fsl,imx6q-usbmisc",
+ .data = &imx6q_usbmisc_ops,
+ },
+ { /* sentinel */ }
+};
+
+static int usbmisc_imx_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct imx_usbmisc *data;
+ int ret;
+ struct of_device_id *tmp_dev;
+
+ if (usbmisc)
+ return -EBUSY;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ spin_lock_init(&data->lock);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(data->base))
+ return PTR_ERR(data->base);
+
+ data->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(data->clk)) {
+ dev_err(&pdev->dev,
+ "failed to get clock, err=%ld\n", PTR_ERR(data->clk));
+ return PTR_ERR(data->clk);
+ }
+
+ ret = clk_prepare_enable(data->clk);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "clk_prepare_enable failed, err=%d\n", ret);
+ return ret;
+ }
+
+ tmp_dev = (struct of_device_id *)
+ of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
+ data->ops = (const struct usbmisc_ops *)tmp_dev->data;
+ usbmisc = data;
+ ret = usbmisc_set_ops(data->ops);
+ if (ret) {
+ usbmisc = NULL;
+ clk_disable_unprepare(data->clk);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int usbmisc_imx_remove(struct platform_device *pdev)
+{
+ usbmisc_unset_ops(usbmisc->ops);
+ clk_disable_unprepare(usbmisc->clk);
+ usbmisc = NULL;
+ return 0;
+}
+
+static struct platform_driver usbmisc_imx_driver = {
+ .probe = usbmisc_imx_probe,
+ .remove = usbmisc_imx_remove,
+ .driver = {
+ .name = "usbmisc_imx",
+ .owner = THIS_MODULE,
+ .of_match_table = usbmisc_imx_dt_ids,
+ },
+};
+
+int usbmisc_imx_drv_init(void)
+{
+ return platform_driver_register(&usbmisc_imx_driver);
+}
+subsys_initcall(usbmisc_imx_drv_init);
+
+void usbmisc_imx_drv_exit(void)
+{
+ platform_driver_unregister(&usbmisc_imx_driver);
+}
+module_exit(usbmisc_imx_drv_exit);
+
+MODULE_ALIAS("platform:usbmisc-imx");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("driver for imx usb non-core registers");
+MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
+++ /dev/null
-/*
- * Copyright 2012 Freescale Semiconductor, Inc.
- *
- * The code contained herein is licensed under the GNU General Public
- * License. You may obtain a copy of the GNU General Public License
- * Version 2 or later at the following locations:
- *
- * http://www.opensource.org/licenses/gpl-license.html
- * http://www.gnu.org/copyleft/gpl.html
- */
-
-#include <linux/module.h>
-#include <linux/of_platform.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include "ci13xxx_imx.h"
-
-#define USB_DEV_MAX 4
-
-#define BM_OVER_CUR_DIS BIT(7)
-
-struct imx6q_usbmisc {
- void __iomem *base;
- spinlock_t lock;
- struct clk *clk;
- struct usbmisc_usb_device usbdev[USB_DEV_MAX];
-};
-
-static struct imx6q_usbmisc *usbmisc;
-
-static struct usbmisc_usb_device *get_usbdev(struct device *dev)
-{
- int i, ret;
-
- for (i = 0; i < USB_DEV_MAX; i++) {
- if (usbmisc->usbdev[i].dev == dev)
- return &usbmisc->usbdev[i];
- else if (!usbmisc->usbdev[i].dev)
- break;
- }
-
- if (i >= USB_DEV_MAX)
- return ERR_PTR(-EBUSY);
-
- ret = usbmisc_get_init_data(dev, &usbmisc->usbdev[i]);
- if (ret)
- return ERR_PTR(ret);
-
- return &usbmisc->usbdev[i];
-}
-
-static int usbmisc_imx6q_init(struct device *dev)
-{
-
- struct usbmisc_usb_device *usbdev;
- unsigned long flags;
- u32 reg;
-
- usbdev = get_usbdev(dev);
- if (IS_ERR(usbdev))
- return PTR_ERR(usbdev);
-
- if (usbdev->disable_oc) {
- spin_lock_irqsave(&usbmisc->lock, flags);
- reg = readl(usbmisc->base + usbdev->index * 4);
- writel(reg | BM_OVER_CUR_DIS,
- usbmisc->base + usbdev->index * 4);
- spin_unlock_irqrestore(&usbmisc->lock, flags);
- }
-
- return 0;
-}
-
-static const struct usbmisc_ops imx6q_usbmisc_ops = {
- .init = usbmisc_imx6q_init,
-};
-
-static const struct of_device_id usbmisc_imx6q_dt_ids[] = {
- { .compatible = "fsl,imx6q-usbmisc"},
- { /* sentinel */ }
-};
-
-static int usbmisc_imx6q_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct imx6q_usbmisc *data;
- int ret;
-
- if (usbmisc)
- return -EBUSY;
-
- data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- spin_lock_init(&data->lock);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- data->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(data->base))
- return PTR_ERR(data->base);
-
- data->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(data->clk)) {
- dev_err(&pdev->dev,
- "failed to get clock, err=%ld\n", PTR_ERR(data->clk));
- return PTR_ERR(data->clk);
- }
-
- ret = clk_prepare_enable(data->clk);
- if (ret) {
- dev_err(&pdev->dev,
- "clk_prepare_enable failed, err=%d\n", ret);
- return ret;
- }
-
- ret = usbmisc_set_ops(&imx6q_usbmisc_ops);
- if (ret) {
- clk_disable_unprepare(data->clk);
- return ret;
- }
-
- usbmisc = data;
-
- return 0;
-}
-
-static int usbmisc_imx6q_remove(struct platform_device *pdev)
-{
- usbmisc_unset_ops(&imx6q_usbmisc_ops);
- clk_disable_unprepare(usbmisc->clk);
- return 0;
-}
-
-static struct platform_driver usbmisc_imx6q_driver = {
- .probe = usbmisc_imx6q_probe,
- .remove = usbmisc_imx6q_remove,
- .driver = {
- .name = "usbmisc_imx6q",
- .owner = THIS_MODULE,
- .of_match_table = usbmisc_imx6q_dt_ids,
- },
-};
-
-int __init usbmisc_imx6q_drv_init(void)
-{
- return platform_driver_register(&usbmisc_imx6q_driver);
-}
-subsys_initcall(usbmisc_imx6q_drv_init);
-
-void __exit usbmisc_imx6q_drv_exit(void)
-{
- platform_driver_unregister(&usbmisc_imx6q_driver);
-}
-module_exit(usbmisc_imx6q_drv_exit);
-
-MODULE_ALIAS("platform:usbmisc-imx6q");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("driver for imx6q usb non-core registers");
-MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
return rv;
}
-static const __u32 acm_tty_speed[] = {
- 0, 50, 75, 110, 134, 150, 200, 300, 600,
- 1200, 1800, 2400, 4800, 9600, 19200, 38400,
- 57600, 115200, 230400, 460800, 500000, 576000,
- 921600, 1000000, 1152000, 1500000, 2000000,
- 2500000, 3000000, 3500000, 4000000
-};
-
static void acm_tty_set_termios(struct tty_struct *tty,
struct ktermios *termios_old)
{
*/
#include <linux/kernel.h>
#include <linux/errno.h>
+#include <linux/ioctl.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mutex.h>
return 0;
}
+static long wdm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct wdm_device *desc = file->private_data;
+ int rv = 0;
+
+ switch (cmd) {
+ case IOCTL_WDM_MAX_COMMAND:
+ if (copy_to_user((void __user *)arg, &desc->wMaxCommand, sizeof(desc->wMaxCommand)))
+ rv = -EFAULT;
+ break;
+ default:
+ rv = -ENOTTY;
+ }
+ return rv;
+}
+
static const struct file_operations wdm_fops = {
.owner = THIS_MODULE,
.read = wdm_read,
.flush = wdm_flush,
.release = wdm_release,
.poll = wdm_poll,
+ .unlocked_ioctl = wdm_ioctl,
+ .compat_ioctl = wdm_ioctl,
.llseek = noop_llseek,
};
comment "Miscellaneous USB options"
depends on USB
+config USB_DEFAULT_PERSIST
+ bool "Enable USB persist by default"
+ depends on USB
+ default y
+ help
+ Say N here if you don't want USB power session persistance
+ enabled by default. If you say N it will make suspended USB
+ devices that lose power get reenumerated as if they had been
+ unplugged, causing any mounted filesystems to be lost. The
+ persist feature can still be enabled for individual devices
+ through the power/persist sysfs node. See
+ Documentation/usb/persist.txt for more info.
+
+ If you have any questions about this, say Y here, only say N
+ if you know exactly what you are doing.
+
config USB_DYNAMIC_MINORS
bool "Dynamic USB minor allocation"
depends on USB
If you are unsure about this, say N here.
-config USB_SUSPEND
- bool "USB runtime power management (autosuspend) and wakeup"
- depends on USB && PM_RUNTIME
- help
- If you say Y here, you can use driver calls or the sysfs
- "power/control" file to enable or disable autosuspend for
- individual USB peripherals (see
- Documentation/usb/power-management.txt for more details).
-
- Also, USB "remote wakeup" signaling is supported, whereby some
- USB devices (like keyboards and network adapters) can wake up
- their parent hub. That wakeup cascades up the USB tree, and
- could wake the system from states like suspend-to-RAM.
-
- If you are unsure about this, say N here.
-
config USB_OTG
bool "OTG support"
depends on USB
*
* This is the central routine for suspending USB devices. It calls the
* suspend methods for all the interface drivers in @udev and then calls
- * the suspend method for @udev itself. If an error occurs at any stage,
- * all the interfaces which were suspended are resumed so that they remain
- * in the same state as the device.
+ * the suspend method for @udev itself. When the routine is called in
+ * autosuspend, if an error occurs at any stage, all the interfaces
+ * which were suspended are resumed so that they remain in the same
+ * state as the device, but when called from system sleep, all error
+ * from suspend methods of interfaces and the non-root-hub device itself
+ * are simply ignored, so all suspended interfaces are only resumed
+ * to the device's state when @udev is root-hub and its suspend method
+ * returns failure.
*
* Autosuspend requests originating from a child device or an interface
* driver may be made without the protection of @udev's device lock, but
#endif /* CONFIG_PM */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
/**
* usb_enable_autosuspend - allow a USB device to be autosuspended
return ret;
}
-#endif /* CONFIG_USB_SUSPEND */
+#endif /* CONFIG_PM_RUNTIME */
struct bus_type usb_bus_type = {
.name = "usb",
c = usb_choose_configuration(udev);
if (c >= 0) {
err = usb_set_configuration(udev, c);
- if (err) {
+ if (err && err != -ENODEV) {
dev_err(&udev->dev, "can't set config #%d, error %d\n",
c, err);
/* This need not be fatal. The user can try to
/* PCI-based HCs are common, but plenty of non-PCI HCs are used too */
-#ifdef CONFIG_PM_SLEEP
-
-/* Coordinate handoffs between EHCI and companion controllers
- * during system resume
+/*
+ * Coordinate handoffs between EHCI and companion controllers
+ * during EHCI probing and system resume.
*/
-static DEFINE_MUTEX(companions_mutex);
+static DECLARE_RWSEM(companions_rwsem);
#define CL_UHCI PCI_CLASS_SERIAL_USB_UHCI
#define CL_OHCI PCI_CLASS_SERIAL_USB_OHCI
#define CL_EHCI PCI_CLASS_SERIAL_USB_EHCI
-enum companion_action {
- SET_HS_COMPANION, CLEAR_HS_COMPANION, WAIT_FOR_COMPANIONS
-};
+static inline int is_ohci_or_uhci(struct pci_dev *pdev)
+{
+ return pdev->class == CL_OHCI || pdev->class == CL_UHCI;
+}
+
+typedef void (*companion_fn)(struct pci_dev *pdev, struct usb_hcd *hcd,
+ struct pci_dev *companion, struct usb_hcd *companion_hcd);
-static void companion_common(struct pci_dev *pdev, struct usb_hcd *hcd,
- enum companion_action action)
+/* Iterate over PCI devices in the same slot as pdev and call fn for each */
+static void for_each_companion(struct pci_dev *pdev, struct usb_hcd *hcd,
+ companion_fn fn)
{
struct pci_dev *companion;
struct usb_hcd *companion_hcd;
unsigned int slot = PCI_SLOT(pdev->devfn);
- /* Iterate through other PCI functions in the same slot.
- * If pdev is OHCI or UHCI then we are looking for EHCI, and
- * vice versa.
+ /*
+ * Iterate through other PCI functions in the same slot.
+ * If the function's drvdata isn't set then it isn't bound to
+ * a USB host controller driver, so skip it.
*/
companion = NULL;
for_each_pci_dev(companion) {
if (companion->bus != pdev->bus ||
PCI_SLOT(companion->devfn) != slot)
continue;
-
companion_hcd = pci_get_drvdata(companion);
if (!companion_hcd)
continue;
-
- /* For SET_HS_COMPANION, store a pointer to the EHCI bus in
- * the OHCI/UHCI companion bus structure.
- * For CLEAR_HS_COMPANION, clear the pointer to the EHCI bus
- * in the OHCI/UHCI companion bus structure.
- * For WAIT_FOR_COMPANIONS, wait until the OHCI/UHCI
- * companion controllers have fully resumed.
- */
-
- if ((pdev->class == CL_OHCI || pdev->class == CL_UHCI) &&
- companion->class == CL_EHCI) {
- /* action must be SET_HS_COMPANION */
- dev_dbg(&companion->dev, "HS companion for %s\n",
- dev_name(&pdev->dev));
- hcd->self.hs_companion = &companion_hcd->self;
-
- } else if (pdev->class == CL_EHCI &&
- (companion->class == CL_OHCI ||
- companion->class == CL_UHCI)) {
- switch (action) {
- case SET_HS_COMPANION:
- dev_dbg(&pdev->dev, "HS companion for %s\n",
- dev_name(&companion->dev));
- companion_hcd->self.hs_companion = &hcd->self;
- break;
- case CLEAR_HS_COMPANION:
- companion_hcd->self.hs_companion = NULL;
- break;
- case WAIT_FOR_COMPANIONS:
- device_pm_wait_for_dev(&pdev->dev,
- &companion->dev);
- break;
- }
- }
+ fn(pdev, hcd, companion, companion_hcd);
}
}
-static void set_hs_companion(struct pci_dev *pdev, struct usb_hcd *hcd)
+/*
+ * We're about to add an EHCI controller, which will unceremoniously grab
+ * all the port connections away from its companions. To prevent annoying
+ * error messages, lock the companion's root hub and gracefully unconfigure
+ * it beforehand. Leave it locked until the EHCI controller is all set.
+ */
+static void ehci_pre_add(struct pci_dev *pdev, struct usb_hcd *hcd,
+ struct pci_dev *companion, struct usb_hcd *companion_hcd)
{
- mutex_lock(&companions_mutex);
- dev_set_drvdata(&pdev->dev, hcd);
- companion_common(pdev, hcd, SET_HS_COMPANION);
- mutex_unlock(&companions_mutex);
+ struct usb_device *udev;
+
+ if (is_ohci_or_uhci(companion)) {
+ udev = companion_hcd->self.root_hub;
+ usb_lock_device(udev);
+ usb_set_configuration(udev, 0);
+ }
}
-static void clear_hs_companion(struct pci_dev *pdev, struct usb_hcd *hcd)
+/*
+ * Adding the EHCI controller has either succeeded or failed. Set the
+ * companion pointer accordingly, and in either case, reconfigure and
+ * unlock the root hub.
+ */
+static void ehci_post_add(struct pci_dev *pdev, struct usb_hcd *hcd,
+ struct pci_dev *companion, struct usb_hcd *companion_hcd)
{
- mutex_lock(&companions_mutex);
- dev_set_drvdata(&pdev->dev, NULL);
+ struct usb_device *udev;
- /* If pdev is OHCI or UHCI, just clear its hs_companion pointer */
- if (pdev->class == CL_OHCI || pdev->class == CL_UHCI)
- hcd->self.hs_companion = NULL;
+ if (is_ohci_or_uhci(companion)) {
+ if (dev_get_drvdata(&pdev->dev)) { /* Succeeded */
+ dev_dbg(&pdev->dev, "HS companion for %s\n",
+ dev_name(&companion->dev));
+ companion_hcd->self.hs_companion = &hcd->self;
+ }
+ udev = companion_hcd->self.root_hub;
+ usb_set_configuration(udev, 1);
+ usb_unlock_device(udev);
+ }
+}
- /* Otherwise search for companion buses and clear their pointers */
- else
- companion_common(pdev, hcd, CLEAR_HS_COMPANION);
- mutex_unlock(&companions_mutex);
+/*
+ * We just added a non-EHCI controller. Find the EHCI controller to
+ * which it is a companion, and store a pointer to the bus structure.
+ */
+static void non_ehci_add(struct pci_dev *pdev, struct usb_hcd *hcd,
+ struct pci_dev *companion, struct usb_hcd *companion_hcd)
+{
+ if (is_ohci_or_uhci(pdev) && companion->class == CL_EHCI) {
+ dev_dbg(&pdev->dev, "FS/LS companion for %s\n",
+ dev_name(&companion->dev));
+ hcd->self.hs_companion = &companion_hcd->self;
+ }
}
-static void wait_for_companions(struct pci_dev *pdev, struct usb_hcd *hcd)
+/* We are removing an EHCI controller. Clear the companions' pointers. */
+static void ehci_remove(struct pci_dev *pdev, struct usb_hcd *hcd,
+ struct pci_dev *companion, struct usb_hcd *companion_hcd)
{
- /* Only EHCI controllers need to wait.
- * No locking is needed because a controller cannot be resumed
- * while one of its companions is getting unbound.
- */
- if (pdev->class == CL_EHCI)
- companion_common(pdev, hcd, WAIT_FOR_COMPANIONS);
+ if (is_ohci_or_uhci(companion))
+ companion_hcd->self.hs_companion = NULL;
}
-#else /* !CONFIG_PM_SLEEP */
+#ifdef CONFIG_PM
-static inline void set_hs_companion(struct pci_dev *d, struct usb_hcd *h) {}
-static inline void clear_hs_companion(struct pci_dev *d, struct usb_hcd *h) {}
-static inline void wait_for_companions(struct pci_dev *d, struct usb_hcd *h) {}
+/* An EHCI controller must wait for its companions before resuming. */
+static void ehci_wait_for_companions(struct pci_dev *pdev, struct usb_hcd *hcd,
+ struct pci_dev *companion, struct usb_hcd *companion_hcd)
+{
+ if (is_ohci_or_uhci(companion))
+ device_pm_wait_for_dev(&pdev->dev, &companion->dev);
+}
-#endif /* !CONFIG_PM_SLEEP */
+#endif /* CONFIG_PM */
/*-------------------------------------------------------------------------*/
driver->description)) {
dev_dbg(&dev->dev, "controller already in use\n");
retval = -EBUSY;
- goto clear_companion;
+ goto put_hcd;
}
hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
if (hcd->regs == NULL) {
if (region == PCI_ROM_RESOURCE) {
dev_dbg(&dev->dev, "no i/o regions available\n");
retval = -EBUSY;
- goto clear_companion;
+ goto put_hcd;
}
}
pci_set_master(dev);
- retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED);
+ /* Note: dev_set_drvdata must be called while holding the rwsem */
+ if (dev->class == CL_EHCI) {
+ down_write(&companions_rwsem);
+ dev_set_drvdata(&dev->dev, hcd);
+ for_each_companion(dev, hcd, ehci_pre_add);
+ retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED);
+ if (retval != 0)
+ dev_set_drvdata(&dev->dev, NULL);
+ for_each_companion(dev, hcd, ehci_post_add);
+ up_write(&companions_rwsem);
+ } else {
+ down_read(&companions_rwsem);
+ dev_set_drvdata(&dev->dev, hcd);
+ retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED);
+ if (retval != 0)
+ dev_set_drvdata(&dev->dev, NULL);
+ else
+ for_each_companion(dev, hcd, non_ehci_add);
+ up_read(&companions_rwsem);
+ }
+
if (retval != 0)
goto unmap_registers;
- set_hs_companion(dev, hcd);
if (pci_dev_run_wake(dev))
pm_runtime_put_noidle(&dev->dev);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
} else
release_region(hcd->rsrc_start, hcd->rsrc_len);
-clear_companion:
- clear_hs_companion(dev, hcd);
+put_hcd:
usb_put_hcd(hcd);
disable_pci:
pci_disable_device(dev);
usb_hcd_irq(0, hcd);
local_irq_enable();
- usb_remove_hcd(hcd);
+ /* Note: dev_set_drvdata must be called while holding the rwsem */
+ if (dev->class == CL_EHCI) {
+ down_write(&companions_rwsem);
+ for_each_companion(dev, hcd, ehci_remove);
+ usb_remove_hcd(hcd);
+ dev_set_drvdata(&dev->dev, NULL);
+ up_write(&companions_rwsem);
+ } else {
+ /* Not EHCI; just clear the companion pointer */
+ down_read(&companions_rwsem);
+ hcd->self.hs_companion = NULL;
+ usb_remove_hcd(hcd);
+ dev_set_drvdata(&dev->dev, NULL);
+ up_read(&companions_rwsem);
+ }
+
if (hcd->driver->flags & HCD_MEMORY) {
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
} else {
release_region(hcd->rsrc_start, hcd->rsrc_len);
}
- clear_hs_companion(dev, hcd);
+
usb_put_hcd(hcd);
pci_disable_device(dev);
}
pci_set_master(pci_dev);
if (hcd->driver->pci_resume && !HCD_DEAD(hcd)) {
- if (event != PM_EVENT_AUTO_RESUME)
- wait_for_companions(pci_dev, hcd);
+
+ /*
+ * Only EHCI controllers have to wait for their companions.
+ * No locking is needed because PCI controller drivers do not
+ * get unbound during system resume.
+ */
+ if (pci_dev->class == CL_EHCI && event != PM_EVENT_AUTO_RESUME)
+ for_each_companion(pci_dev, hcd,
+ ehci_wait_for_companions);
retval = hcd->driver->pci_resume(hcd,
event == PM_EVENT_RESTORE);
#endif /* CONFIG_PM */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
/* Workqueue routine for root-hub remote wakeup */
static void hcd_resume_work(struct work_struct *work)
}
EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
-#endif /* CONFIG_USB_SUSPEND */
+#endif /* CONFIG_PM_RUNTIME */
/*-------------------------------------------------------------------------*/
init_timer(&hcd->rh_timer);
hcd->rh_timer.function = rh_timer_func;
hcd->rh_timer.data = (unsigned long) hcd;
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
INIT_WORK(&hcd->wakeup_work, hcd_resume_work);
#endif
hcd->rh_registered = 0;
spin_unlock_irq(&hcd_root_hub_lock);
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
cancel_work_sync(&hcd->wakeup_work);
#endif
mutex_lock(&usb_bus_list_lock);
hcd->rh_registered = 0;
spin_unlock_irq (&hcd_root_hub_lock);
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
cancel_work_sync(&hcd->wakeup_work);
#endif
mutex_lock(&hub->status_mutex);
ret = get_port_status(hub->hdev, port1, &hub->status->port);
if (ret < 4) {
- dev_err(hub->intfdev,
- "%s failed (err = %d)\n", __func__, ret);
+ if (ret != -ENODEV)
+ dev_err(hub->intfdev,
+ "%s failed (err = %d)\n", __func__, ret);
if (ret >= 0)
ret = -EIO;
} else {
/* drop lock so HCD can concurrently report other TT errors */
spin_unlock_irqrestore (&hub->tt.lock, flags);
status = hub_clear_tt_buffer (hdev, clear->devinfo, clear->tt);
- if (status)
+ if (status && status != -ENODEV)
dev_err (&hdev->dev,
"clear tt %d (%04x) error %d\n",
clear->tt, clear->devinfo, status);
mutex_lock(&hub->status_mutex);
ret = get_hub_status(hub->hdev, &hub->status->hub);
- if (ret < 0)
- dev_err (hub->intfdev,
- "%s failed (err = %d)\n", __func__, ret);
- else {
+ if (ret < 0) {
+ if (ret != -ENODEV)
+ dev_err(hub->intfdev,
+ "%s failed (err = %d)\n", __func__, ret);
+ } else {
*status = le16_to_cpu(hub->status->hub.wHubStatus);
*change = le16_to_cpu(hub->status->hub.wHubChange);
ret = 0;
return -EINVAL;
ret = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_SS_DISABLED);
- if (ret) {
- dev_err(hub->intfdev, "cannot disable port %d (err = %d)\n",
- port1, ret);
+ if (ret)
return ret;
- }
/* Wait for the link to enter the disabled state. */
for (total_time = 0; ; total_time += HUB_DEBOUNCE_STEP) {
ret = usb_clear_port_feature(hdev, port1,
USB_PORT_FEAT_ENABLE);
}
- if (ret)
+ if (ret && ret != -ENODEV)
dev_err(hub->intfdev, "cannot disable port %d (err = %d)\n",
port1, ret);
return ret;
message = "hub has too many ports!";
ret = -ENODEV;
goto fail;
+ } else if (hub->descriptor->bNbrPorts == 0) {
+ message = "hub doesn't have any ports!";
+ ret = -ENODEV;
+ goto fail;
}
hdev->maxchild = hub->descriptor->bNbrPorts;
if (udev->config == NULL) {
err = usb_get_configuration(udev);
if (err < 0) {
- dev_err(&udev->dev, "can't read configurations, error %d\n",
- err);
+ if (err != -ENODEV)
+ dev_err(&udev->dev, "can't read configurations, error %d\n",
+ err);
return err;
}
}
status = set_port_feature(hub->hdev, port1, (warm ?
USB_PORT_FEAT_BH_PORT_RESET :
USB_PORT_FEAT_RESET));
- if (status) {
+ if (status == -ENODEV) {
+ ; /* The hub is gone */
+ } else if (status) {
dev_err(hub->intfdev,
"cannot %sreset port %d (err = %d)\n",
warm ? "warm " : "", port1, status);
} else {
status = hub_port_wait_reset(hub, port1, udev, delay,
warm);
- if (status && status != -ENOTCONN)
+ if (status && status != -ENOTCONN && status != -ENODEV)
dev_dbg(hub->intfdev,
"port_wait_reset: err = %d\n",
status);
}
EXPORT_SYMBOL_GPL(usb_enable_ltm);
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM
/*
* usb_disable_function_remotewakeup - disable usb3.0
* device's function remote wakeup
* Linux (2.6) currently has NO mechanisms to initiate that: no khubd
* timer, no SRP, no requests through sysfs.
*
- * If CONFIG_USB_SUSPEND isn't enabled, devices only really suspend when
- * the root hub for their bus goes into global suspend ... so we don't
- * (falsely) update the device power state to say it suspended.
+ * If Runtime PM isn't enabled or used, non-SuperSpeed devices really get
+ * suspended only when their bus goes into global suspend (i.e., the root
+ * hub is suspended). Nevertheless, we change @udev->state to
+ * USB_STATE_SUSPENDED as this is the device's "logical" state. The actual
+ * upstream port setting is stored in @udev->port_is_suspended.
*
* Returns 0 on success, else negative errno.
*/
enum pm_qos_flags_status pm_qos_stat;
int port1 = udev->portnum;
int status;
+ bool really_suspend = true;
/* enable remote wakeup when appropriate; this lets the device
* wake up the upstream hub (including maybe the root hub).
/* see 7.1.7.6 */
if (hub_is_superspeed(hub->hdev))
status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U3);
- else
+ else if (PMSG_IS_AUTO(msg))
status = set_port_feature(hub->hdev, port1,
USB_PORT_FEAT_SUSPEND);
+ /*
+ * For system suspend, we do not need to enable the suspend feature
+ * on individual USB-2 ports. The devices will automatically go
+ * into suspend a few ms after the root hub stops sending packets.
+ * The USB 2.0 spec calls this "global suspend".
+ */
+ else {
+ really_suspend = false;
+ status = 0;
+ }
if (status) {
dev_dbg(hub->intfdev, "can't suspend port %d, status %d\n",
port1, status);
(PMSG_IS_AUTO(msg) ? "auto-" : ""),
udev->do_remote_wakeup);
usb_set_device_state(udev, USB_STATE_SUSPENDED);
- udev->port_is_suspended = 1;
- msleep(10);
+ if (really_suspend) {
+ udev->port_is_suspended = 1;
+ msleep(10);
+ }
}
/*
return status;
}
+#endif /* CONFIG_PM */
+
+#ifdef CONFIG_PM_RUNTIME
+
/* caller has locked udev */
int usb_remote_wakeup(struct usb_device *udev)
{
return status;
}
-#else /* CONFIG_USB_SUSPEND */
-
-/* When CONFIG_USB_SUSPEND isn't set, we never suspend or resume any ports. */
-
-int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
-{
- return 0;
-}
-
-/* However we may need to do a reset-resume */
-
-int usb_port_resume(struct usb_device *udev, pm_message_t msg)
-{
- struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent);
- int port1 = udev->portnum;
- int status;
- u16 portchange, portstatus;
-
- status = hub_port_status(hub, port1, &portstatus, &portchange);
- status = check_port_resume_type(udev,
- hub, port1, status, portchange, portstatus);
-
- if (status) {
- dev_dbg(&udev->dev, "can't resume, status %d\n", status);
- hub_port_logical_disconnect(hub, port1);
- } else if (udev->reset_resume) {
- dev_dbg(&udev->dev, "reset-resume\n");
- status = usb_reset_and_verify_device(udev);
- }
- return status;
-}
-
#endif
static int check_ports_changed(struct usb_hub *hub)
goto fail;
}
if (r) {
- dev_err(&udev->dev,
- "device descriptor read/64, error %d\n",
- r);
+ if (r != -ENODEV)
+ dev_err(&udev->dev, "device descriptor read/64, error %d\n",
+ r);
retval = -EMSGSIZE;
continue;
}
msleep(200);
}
if (retval < 0) {
- dev_err(&udev->dev,
- "device not accepting address %d, error %d\n",
- devnum, retval);
+ if (retval != -ENODEV)
+ dev_err(&udev->dev, "device not accepting address %d, error %d\n",
+ devnum, retval);
goto fail;
}
if (udev->speed == USB_SPEED_SUPER) {
retval = usb_get_device_descriptor(udev, 8);
if (retval < 8) {
- dev_err(&udev->dev,
+ if (retval != -ENODEV)
+ dev_err(&udev->dev,
"device descriptor read/8, error %d\n",
retval);
if (retval >= 0)
retval = usb_get_device_descriptor(udev, USB_DT_DEVICE_SIZE);
if (retval < (signed)sizeof(udev->descriptor)) {
- dev_err(&udev->dev, "device descriptor read/all, error %d\n",
- retval);
+ if (retval != -ENODEV)
+ dev_err(&udev->dev, "device descriptor read/all, error %d\n",
+ retval);
if (retval >= 0)
retval = -ENOMSG;
goto fail;
if (portstatus & USB_PORT_STAT_ENABLE) {
status = 0; /* Nothing to do */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
} else if (udev->state == USB_STATE_SUSPENDED &&
udev->persist_enabled) {
/* For a suspended device, treat this as a
USB_PORT_STAT_C_ENABLE)) {
status = hub_port_debounce_be_stable(hub, port1);
if (status < 0) {
- if (printk_ratelimit())
+ if (status != -ENODEV && printk_ratelimit())
dev_err(hub_dev, "connect-debounce failed, "
"port %d disabled\n", port1);
portstatus &= ~USB_PORT_STAT_CONNECTION;
else
unit_load = 100;
+ status = 0;
for (i = 0; i < SET_CONFIG_TRIES; i++) {
/* reallocate for each attempt, since references
}
if (hub->hdev->parent ||
!hcd->driver->port_handed_over ||
- !(hcd->driver->port_handed_over)(hcd, port1))
- dev_err(hub_dev, "unable to enumerate USB device on port %d\n",
- port1);
+ !(hcd->driver->port_handed_over)(hcd, port1)) {
+ if (status != -ENOTCONN && status != -ENODEV)
+ dev_err(hub_dev, "unable to enumerate USB device on port %d\n",
+ port1);
+ }
done:
hub_port_disable(hub, port1, 1);
kfree(port_dev);
}
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
static int usb_port_runtime_resume(struct device *dev)
{
struct usb_port *port_dev = to_usb_port(dev);
#endif
static const struct dev_pm_ops usb_port_pm_ops = {
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
.runtime_suspend = usb_port_runtime_suspend,
.runtime_resume = usb_port_runtime_resume,
.runtime_idle = pm_generic_runtime_idle,
dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
udev->quirks);
- /* For the present, all devices default to USB-PERSIST enabled */
-#if 0 /* was: #ifdef CONFIG_PM */
- /* Hubs are automatically enabled for USB-PERSIST */
- if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
+#ifdef CONFIG_USB_DEFAULT_PERSIST
+ if (!(udev->quirks & USB_QUIRK_RESET))
udev->persist_enabled = 1;
-
#else
- /* In the absence of PM, we can safely enable USB-PERSIST
- * for all devices. It will affect things like hub resets
- * and EMF-related port disables.
- */
- if (!(udev->quirks & USB_QUIRK_RESET))
+ /* Hubs are automatically enabled for USB-PERSIST */
+ if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
udev->persist_enabled = 1;
-#endif /* CONFIG_PM */
+#endif /* CONFIG_USB_DEFAULT_PERSIST */
}
void usb_detect_interface_quirks(struct usb_device *udev)
#endif /* CONFIG_PM */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
static ssize_t
show_connected_duration(struct device *dev, struct device_attribute *attr,
#define add_power_attributes(dev) 0
#define remove_power_attributes(dev) do {} while (0)
-#endif /* CONFIG_USB_SUSPEND */
+#endif /* CONFIG_PM_RUNTIME */
/* Descriptor fields */
void usb_poison_urb(struct urb *urb)
{
might_sleep();
- if (!(urb && urb->dev && urb->ep))
+ if (!urb)
return;
atomic_inc(&urb->reject);
+ if (!urb->dev || !urb->ep)
+ return;
+
usb_hcd_unlink_urb(urb, -ENOENT);
wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
}
static bool nousb; /* Disable USB when built into kernel image */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
static int usb_autosuspend_delay = 2; /* Default delay value,
* in seconds */
module_param_named(autosuspend, usb_autosuspend_delay, int, 0644);
.thaw = usb_dev_thaw,
.poweroff = usb_dev_poweroff,
.restore = usb_dev_restore,
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
.runtime_suspend = usb_runtime_suspend,
.runtime_resume = usb_runtime_resume,
.runtime_idle = usb_runtime_idle,
#endif
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
extern void usb_autosuspend_device(struct usb_device *udev);
extern int usb_autoresume_device(struct usb_device *udev);
Variation of ARC USB block used in some Freescale chips.
config USB_EHCI_HCD_OMAP
- bool "EHCI support for OMAP3 and later chips"
+ tristate "EHCI support for OMAP3 and later chips"
depends on USB_EHCI_HCD && ARCH_OMAP
+ select NOP_USB_XCEIV
default y
---help---
Enables support for the on-chip EHCI controller on
obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o
obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o
+obj-$(CONFIG_USB_EHCI_HCD_OMAP) += ehci-omap.o
obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
spin_lock_irqsave (&ehci->lock, flags);
for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
qh_lines (ehci, qh, &next, &size);
- if (ehci->async_unlink && size > 0) {
+ if (!list_empty(&ehci->async_unlink) && size > 0) {
temp = scnprintf(next, size, "\nunlink =\n");
size -= temp;
next += temp;
- for (qh = ehci->async_unlink; size > 0 && qh;
- qh = qh->unlink_next)
- qh_lines (ehci, qh, &next, &size);
+ list_for_each_entry(qh, &ehci->async_unlink, unlink_node) {
+ if (size <= 0)
+ break;
+ qh_lines(ehci, qh, &next, &size);
+ }
}
spin_unlock_irqrestore (&ehci->lock, flags);
}
}
- if (ehci->async_unlink) {
+ if (!list_empty(&ehci->async_unlink)) {
temp = scnprintf(next, size, "async unlink qh %p\n",
- ehci->async_unlink);
+ list_first_entry(&ehci->async_unlink,
+ struct ehci_qh, unlink_node));
size -= temp;
next += temp;
}
* periodic_size can shrink by USBCMD update if hcc_params allows.
*/
ehci->periodic_size = DEFAULT_I_TDPS;
+ INIT_LIST_HEAD(&ehci->async_unlink);
+ INIT_LIST_HEAD(&ehci->async_idle);
+ INIT_LIST_HEAD(&ehci->intr_unlink);
INIT_LIST_HEAD(&ehci->intr_qh_list);
INIT_LIST_HEAD(&ehci->cached_itd_list);
INIT_LIST_HEAD(&ehci->cached_sitd_list);
/* guard against (alleged) silicon errata */
if (cmd & CMD_IAAD)
ehci_dbg(ehci, "IAA with IAAD still set?\n");
- if (ehci->async_iaa)
+ if (ehci->iaa_in_progress)
COUNT(ehci->stats.iaa);
end_unlink_async(ehci);
}
/* remote wakeup [4.3.1] */
if (status & STS_PCD) {
unsigned i = HCS_N_PORTS (ehci->hcs_params);
- u32 ppcd = 0;
+ u32 ppcd = ~0;
/* kick root hub later */
pcd_status = status;
int pstatus;
/* leverage per-port change bits feature */
- if (ehci->has_ppcd && !(ppcd & (1 << i)))
+ if (!(ppcd & (1 << i)))
continue;
pstatus = ehci_readl(ehci,
&ehci->regs->port_status[i]);
if (rc)
goto done;
- switch (usb_pipetype (urb->pipe)) {
- // case PIPE_CONTROL:
- // case PIPE_BULK:
- default:
+ if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+ /*
+ * We don't expedite dequeue for isochronous URBs.
+ * Just wait until they complete normally or their
+ * time slot expires.
+ */
+ } else {
qh = (struct ehci_qh *) urb->hcpriv;
- if (!qh)
- break;
+ qh->exception = 1;
switch (qh->qh_state) {
case QH_STATE_LINKED:
+ if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)
+ start_unlink_intr(ehci, qh);
+ else
+ start_unlink_async(ehci, qh);
+ break;
case QH_STATE_COMPLETING:
- start_unlink_async(ehci, qh);
+ qh->dequeue_during_giveback = 1;
break;
case QH_STATE_UNLINK:
case QH_STATE_UNLINK_WAIT:
qh_completions(ehci, qh);
break;
}
- break;
-
- case PIPE_INTERRUPT:
- qh = (struct ehci_qh *) urb->hcpriv;
- if (!qh)
- break;
- switch (qh->qh_state) {
- case QH_STATE_LINKED:
- case QH_STATE_COMPLETING:
- start_unlink_intr(ehci, qh);
- break;
- case QH_STATE_IDLE:
- qh_completions (ehci, qh);
- break;
- default:
- ehci_dbg (ehci, "bogus qh %p state %d\n",
- qh, qh->qh_state);
- goto done;
- }
- break;
-
- case PIPE_ISOCHRONOUS:
- // itd or sitd ...
-
- // wait till next completion, do it then.
- // completion irqs can wait up to 1024 msec,
- break;
}
done:
spin_unlock_irqrestore (&ehci->lock, flags);
goto done;
}
+ qh->exception = 1;
if (ehci->rh_state < EHCI_RH_RUNNING)
qh->qh_state = QH_STATE_IDLE;
switch (qh->qh_state) {
usb_settoggle(qh->dev, epnum, is_out, 0);
if (!list_empty(&qh->qtd_list)) {
WARN_ONCE(1, "clear_halt for a busy endpoint\n");
- } else if (qh->qh_state == QH_STATE_LINKED ||
- qh->qh_state == QH_STATE_COMPLETING) {
-
+ } else {
/* The toggle value in the QH can't be updated
* while the QH is active. Unlink it now;
* re-linking will call qh_refresh().
*/
+ qh->exception = 1;
if (eptype == USB_ENDPOINT_XFER_BULK)
start_unlink_async(ehci, qh);
else
#define PLATFORM_DRIVER ehci_hcd_sh_driver
#endif
-#ifdef CONFIG_USB_EHCI_HCD_OMAP
-#include "ehci-omap.c"
-#define PLATFORM_DRIVER ehci_hcd_omap_driver
-#endif
-
#ifdef CONFIG_PPC_PS3
#include "ehci-ps3.c"
#define PS3_SYSTEM_BUS_DRIVER ps3_ehci_driver
#define PLATFORM_DRIVER ehci_octeon_driver
#endif
-#ifdef CONFIG_ARCH_VT8500
-#include "ehci-vt8500.c"
-#define PLATFORM_DRIVER vt8500_ehci_driver
-#endif
-
#ifdef CONFIG_PLAT_SPEAR
#include "ehci-spear.c"
#define PLATFORM_DRIVER spear_ehci_hcd_driver
!IS_ENABLED(CONFIG_USB_EHCI_HCD_PLATFORM) && \
!IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \
!IS_ENABLED(CONFIG_USB_EHCI_MXC) && \
+ !IS_ENABLED(CONFIG_USB_EHCI_HCD_OMAP) && \
!defined(PLATFORM_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && \
!defined(OF_PLATFORM_DRIVER) && \
while (i--) {
temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
if (test_bit(i, &resume_needed)) {
- temp &= ~(PORT_RWC_BITS | PORT_RESUME);
+ temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME);
ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
ehci_vdbg (ehci, "resumed port %d\n", i + 1);
}
u32 mask;
int ports, i, retval = 1;
unsigned long flags;
- u32 ppcd = 0;
+ u32 ppcd = ~0;
/* init status to no-changes */
buf [0] = 0;
for (i = 0; i < ports; i++) {
/* leverage per-port change bits feature */
- if (ehci->has_ppcd && !(ppcd & (1 << i)))
- continue;
- temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
+ if (ppcd & (1 << i))
+ temp = ehci_readl(ehci, &ehci->regs->port_status[i]);
+ else
+ temp = 0;
/*
* Return status information even for ports with OWNER set.
usb_hcd_end_port_resume(&hcd->self, wIndex);
/* stop resume signaling */
- temp = ehci_readl(ehci, status_reg);
- ehci_writel(ehci,
- temp & ~(PORT_RWC_BITS | PORT_RESUME),
- status_reg);
+ temp &= ~(PORT_RWC_BITS |
+ PORT_SUSPEND | PORT_RESUME);
+ ehci_writel(ehci, temp, status_reg);
clear_bit(wIndex, &ehci->resuming_ports);
retval = handshake(ehci, status_reg,
PORT_RESUME, 0, 2000 /* 2msec */);
wIndex + 1, retval);
goto error;
}
- temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
+ temp = ehci_readl(ehci, status_reg);
}
}
(void __iomem *) ((unsigned long) ehci_mv->cap_regs + offset);
hcd->rsrc_start = r->start;
- hcd->rsrc_len = r->end - r->start + 1;
+ hcd->rsrc_len = resource_size(r);
hcd->regs = ehci_mv->op_regs;
hcd->irq = platform_get_irq(pdev, 0);
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
-
#include <linux/platform_data/usb-ehci-mxc.h>
-
-#include <asm/mach-types.h>
-
#include "ehci.h"
#define DRIVER_DESC "Freescale On-Chip EHCI Host driver"
struct device *dev = &pdev->dev;
struct ehci_hcd *ehci;
- dev_info(&pdev->dev, "initializing i.MX USB Controller\n");
-
if (!pdata) {
dev_err(dev, "No platform data given, bailing out.\n");
return -EINVAL;
return ret;
}
-static int __exit ehci_mxc_drv_remove(struct platform_device *pdev)
+static int ehci_mxc_drv_remove(struct platform_device *pdev)
{
struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
struct usb_hcd *hcd = platform_get_drvdata(pdev);
* Bus Glue for the EHCI controllers in OMAP3/4
* Tested on several OMAP3 boards, and OMAP4 Pandaboard
*
- * Copyright (C) 2007-2011 Texas Instruments, Inc.
+ * Copyright (C) 2007-2013 Texas Instruments, Inc.
* Author: Vikram Pandita <vikram.pandita@ti.com>
* Author: Anand Gadiyar <gadiyar@ti.com>
* Author: Keshava Munegowda <keshava_mgowda@ti.com>
+ * Author: Roger Quadros <rogerq@ti.com>
*
* Copyright (C) 2009 Nokia Corporation
* Contact: Felipe Balbi <felipe.balbi@nokia.com>
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
- * TODO (last updated Feb 27, 2010):
- * - add kernel-doc
- * - enable AUTOIDLE
- * - add suspend/resume
- * - add HSIC and TLL support
- * - convert to use hwmod and runtime PM
*/
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/usb/ulpi.h>
-#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
#include <linux/gpio.h>
#include <linux/clk.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/of.h>
+#include <linux/dma-mapping.h>
+
+#include "ehci.h"
#include <linux/platform_data/usb-omap.h>
#define EHCI_INSNREG05_ULPI_EXTREGADD_SHIFT 8
#define EHCI_INSNREG05_ULPI_WRDATA_SHIFT 0
-/*-------------------------------------------------------------------------*/
+#define DRIVER_DESC "OMAP-EHCI Host Controller driver"
+
+static const char hcd_name[] = "ehci-omap";
-static const struct hc_driver ehci_omap_hc_driver;
+/*-------------------------------------------------------------------------*/
+struct omap_hcd {
+ struct usb_phy *phy[OMAP3_HS_USB_PORTS]; /* one PHY for each port */
+ int nports;
+};
static inline void ehci_write(void __iomem *base, u32 reg, u32 val)
{
return __raw_readl(base + reg);
}
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
-static void omap_ehci_soft_phy_reset(struct usb_hcd *hcd, u8 port)
-{
- unsigned long timeout = jiffies + msecs_to_jiffies(1000);
- unsigned reg = 0;
-
- reg = ULPI_FUNC_CTRL_RESET
- /* FUNCTION_CTRL_SET register */
- | (ULPI_SET(ULPI_FUNC_CTRL) << EHCI_INSNREG05_ULPI_REGADD_SHIFT)
- /* Write */
- | (2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT)
- /* PORTn */
- | ((port + 1) << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT)
- /* start ULPI access*/
- | (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT);
-
- ehci_write(hcd->regs, EHCI_INSNREG05_ULPI, reg);
-
- /* Wait for ULPI access completion */
- while ((ehci_read(hcd->regs, EHCI_INSNREG05_ULPI)
- & (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT))) {
- cpu_relax();
-
- if (time_after(jiffies, timeout)) {
- dev_dbg(hcd->self.controller,
- "phy reset operation timed out\n");
- break;
- }
- }
-}
-
-static int omap_ehci_init(struct usb_hcd *hcd)
-{
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- int rc;
- struct usbhs_omap_platform_data *pdata;
-
- pdata = hcd->self.controller->platform_data;
-
- /* Hold PHYs in reset while initializing EHCI controller */
- if (pdata->phy_reset) {
- if (gpio_is_valid(pdata->reset_gpio_port[0]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[0], 0);
-
- if (gpio_is_valid(pdata->reset_gpio_port[1]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[1], 0);
-
- /* Hold the PHY in RESET for enough time till DIR is high */
- udelay(10);
- }
-
- /* Soft reset the PHY using PHY reset command over ULPI */
- if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
- omap_ehci_soft_phy_reset(hcd, 0);
- if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
- omap_ehci_soft_phy_reset(hcd, 1);
-
- /* we know this is the memory we want, no need to ioremap again */
- ehci->caps = hcd->regs;
-
- rc = ehci_setup(hcd);
-
- if (pdata->phy_reset) {
- /* Hold the PHY in RESET for enough time till
- * PHY is settled and ready
- */
- udelay(10);
-
- if (gpio_is_valid(pdata->reset_gpio_port[0]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
-
- if (gpio_is_valid(pdata->reset_gpio_port[1]))
- gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
- }
-
- return rc;
-}
+static struct hc_driver __read_mostly ehci_omap_hc_driver;
-static void disable_put_regulator(
- struct usbhs_omap_platform_data *pdata)
-{
- int i;
-
- for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
- if (pdata->regulator[i]) {
- regulator_disable(pdata->regulator[i]);
- regulator_put(pdata->regulator[i]);
- }
- }
-}
+static const struct ehci_driver_overrides ehci_omap_overrides __initdata = {
+ .extra_priv_size = sizeof(struct omap_hcd),
+};
-/* configure so an HC device and id are always provided */
-/* always called with process context; sleeping is OK */
+static u64 omap_ehci_dma_mask = DMA_BIT_MASK(32);
/**
* ehci_hcd_omap_probe - initialize TI-based HCDs
*/
static int ehci_hcd_omap_probe(struct platform_device *pdev)
{
- struct device *dev = &pdev->dev;
- struct usbhs_omap_platform_data *pdata = dev->platform_data;
- struct resource *res;
- struct usb_hcd *hcd;
- void __iomem *regs;
- int ret = -ENODEV;
- int irq;
- int i;
- char supply[7];
+ struct device *dev = &pdev->dev;
+ struct usbhs_omap_platform_data *pdata = dev->platform_data;
+ struct resource *res;
+ struct usb_hcd *hcd;
+ void __iomem *regs;
+ int ret = -ENODEV;
+ int irq;
+ int i;
+ struct omap_hcd *omap;
if (usb_disabled())
return -ENODEV;
return -ENODEV;
}
- irq = platform_get_irq_byname(pdev, "ehci-irq");
- if (irq < 0) {
- dev_err(dev, "EHCI irq failed\n");
- return -ENODEV;
+ /* For DT boot, get platform data from parent. i.e. usbhshost */
+ if (dev->of_node) {
+ pdata = dev->parent->platform_data;
+ dev->platform_data = pdata;
}
- res = platform_get_resource_byname(pdev,
- IORESOURCE_MEM, "ehci");
- if (!res) {
- dev_err(dev, "UHH EHCI get resource failed\n");
+ if (!pdata) {
+ dev_err(dev, "Missing platform data\n");
return -ENODEV;
}
- regs = ioremap(res->start, resource_size(res));
- if (!regs) {
- dev_err(dev, "UHH EHCI ioremap failed\n");
- return -ENOMEM;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(dev, "EHCI irq failed\n");
+ return -ENODEV;
}
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+
+ /*
+ * Right now device-tree probed devices don't get dma_mask set.
+ * Since shared usb code relies on it, set it here for now.
+ * Once we have dma capability bindings this can go away.
+ */
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &omap_ehci_dma_mask;
+
hcd = usb_create_hcd(&ehci_omap_hc_driver, dev,
dev_name(dev));
if (!hcd) {
- dev_err(dev, "failed to create hcd with err %d\n", ret);
- ret = -ENOMEM;
- goto err_io;
+ dev_err(dev, "Failed to create HCD\n");
+ return -ENOMEM;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = regs;
-
- /* get ehci regulator and enable */
- for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
- if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY) {
- pdata->regulator[i] = NULL;
- continue;
- }
- snprintf(supply, sizeof(supply), "hsusb%d", i);
- pdata->regulator[i] = regulator_get(dev, supply);
- if (IS_ERR(pdata->regulator[i])) {
- pdata->regulator[i] = NULL;
- dev_dbg(dev,
- "failed to get ehci port%d regulator\n", i);
- } else {
- regulator_enable(pdata->regulator[i]);
+ hcd_to_ehci(hcd)->caps = regs;
+
+ omap = (struct omap_hcd *)hcd_to_ehci(hcd)->priv;
+ omap->nports = pdata->nports;
+
+ platform_set_drvdata(pdev, hcd);
+
+ /* get the PHY devices if needed */
+ for (i = 0 ; i < omap->nports ; i++) {
+ struct usb_phy *phy;
+
+ /* get the PHY device */
+ if (dev->of_node)
+ phy = devm_usb_get_phy_by_phandle(dev, "phys", i);
+ else
+ phy = devm_usb_get_phy_dev(dev, i);
+ if (IS_ERR(phy) || !phy) {
+ /* Don't bail out if PHY is not absolutely necessary */
+ if (pdata->port_mode[i] != OMAP_EHCI_PORT_MODE_PHY)
+ continue;
+
+ ret = IS_ERR(phy) ? PTR_ERR(phy) : -ENODEV;
+ dev_err(dev, "Can't get PHY device for port %d: %d\n",
+ i, ret);
+ goto err_phy;
}
+
+ omap->phy[i] = phy;
}
pm_runtime_enable(dev);
goto err_pm_runtime;
}
+ /*
+ * Bring PHYs out of reset.
+ * Even though HSIC mode is a PHY-less mode, the reset
+ * line exists between the chips and can be modelled
+ * as a PHY device for reset control.
+ */
+ for (i = 0; i < omap->nports; i++) {
+ if (!omap->phy[i])
+ continue;
+
+ usb_phy_init(omap->phy[i]);
+ /* bring PHY out of suspend */
+ usb_phy_set_suspend(omap->phy[i], 0);
+ }
return 0;
err_pm_runtime:
- disable_put_regulator(pdata);
pm_runtime_put_sync(dev);
+
+err_phy:
+ for (i = 0; i < omap->nports; i++) {
+ if (omap->phy[i])
+ usb_phy_shutdown(omap->phy[i]);
+ }
+
usb_put_hcd(hcd);
-err_io:
- iounmap(regs);
return ret;
}
*/
static int ehci_hcd_omap_remove(struct platform_device *pdev)
{
- struct device *dev = &pdev->dev;
- struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct device *dev = &pdev->dev;
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct omap_hcd *omap = (struct omap_hcd *)hcd_to_ehci(hcd)->priv;
+ int i;
usb_remove_hcd(hcd);
- disable_put_regulator(dev->platform_data);
- iounmap(hcd->regs);
- usb_put_hcd(hcd);
+ for (i = 0; i < omap->nports; i++) {
+ if (omap->phy[i])
+ usb_phy_shutdown(omap->phy[i]);
+ }
+
+ usb_put_hcd(hcd);
pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
hcd->driver->shutdown(hcd);
}
+static const struct of_device_id omap_ehci_dt_ids[] = {
+ { .compatible = "ti,ehci-omap" },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, omap_ehci_dt_ids);
+
static struct platform_driver ehci_hcd_omap_driver = {
.probe = ehci_hcd_omap_probe,
.remove = ehci_hcd_omap_remove,
/*.suspend = ehci_hcd_omap_suspend, */
/*.resume = ehci_hcd_omap_resume, */
.driver = {
- .name = "ehci-omap",
+ .name = hcd_name,
+ .of_match_table = of_match_ptr(omap_ehci_dt_ids),
}
};
/*-------------------------------------------------------------------------*/
-static const struct hc_driver ehci_omap_hc_driver = {
- .description = hcd_name,
- .product_desc = "OMAP-EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /*
- * basic lifecycle operations
- */
- .reset = omap_ehci_init,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
+static int __init ehci_omap_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
- /*
- * scheduling support
- */
- .get_frame_number = ehci_get_frame,
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
- /*
- * root hub support
- */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
+ ehci_init_driver(&ehci_omap_hc_driver, &ehci_omap_overrides);
+ return platform_driver_register(&ehci_hcd_omap_driver);
+}
+module_init(ehci_omap_init);
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
+static void __exit ehci_omap_cleanup(void)
+{
+ platform_driver_unregister(&ehci_hcd_omap_driver);
+}
+module_exit(ehci_omap_cleanup);
MODULE_ALIAS("platform:ehci-omap");
MODULE_AUTHOR("Texas Instruments, Inc.");
MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>");
+MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
return err;
}
-static int __exit ehci_orion_drv_remove(struct platform_device *pdev)
+static int ehci_orion_drv_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct clk *clk;
static struct platform_driver ehci_orion_driver = {
.probe = ehci_orion_drv_probe,
- .remove = __exit_p(ehci_orion_drv_remove),
+ .remove = ehci_orion_drv_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "orion-ehci",
}
}
-#ifdef CONFIG_USB_SUSPEND
- /* REVISIT: the controller works fine for wakeup iff the root hub
- * itself is "globally" suspended, but usbcore currently doesn't
- * understand such things.
- *
- * System suspend currently expects to be able to suspend the entire
- * device tree, device-at-a-time. If we failed selective suspend
- * reports, system suspend would fail; so the root hub code must claim
- * success. That's lying to usbcore, and it matters for runtime
- * PM scenarios with selective suspend and remote wakeup...
- */
+#ifdef CONFIG_PM_RUNTIME
if (ehci->no_selective_suspend && device_can_wakeup(&pdev->dev))
ehci_warn(ehci, "selective suspend/wakeup unavailable\n");
#endif
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
+#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/hrtimer.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
.reset = ehci_platform_reset,
};
+static struct usb_ehci_pdata ehci_platform_defaults;
+
static int ehci_platform_probe(struct platform_device *dev)
{
struct usb_hcd *hcd;
struct resource *res_mem;
- struct usb_ehci_pdata *pdata = dev->dev.platform_data;
+ struct usb_ehci_pdata *pdata;
int irq;
int err = -ENOMEM;
- if (!pdata) {
- WARN_ON(1);
- return -ENODEV;
- }
-
if (usb_disabled())
return -ENODEV;
+ /*
+ * use reasonable defaults so platforms don't have to provide these.
+ * with DT probing on ARM, none of these are set.
+ */
+ if (!dev->dev.platform_data)
+ dev->dev.platform_data = &ehci_platform_defaults;
+ if (!dev->dev.dma_mask)
+ dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
+ if (!dev->dev.coherent_dma_mask)
+ dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+ pdata = dev->dev.platform_data;
+
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
if (pdata->power_off)
pdata->power_off(dev);
+ if (pdata == &ehci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
return 0;
}
#define ehci_platform_resume NULL
#endif /* CONFIG_PM */
+static const struct of_device_id vt8500_ehci_ids[] = {
+ { .compatible = "via,vt8500-ehci", },
+ { .compatible = "wm,prizm-ehci", },
+ {}
+};
+
static const struct platform_device_id ehci_platform_table[] = {
{ "ehci-platform", 0 },
{ }
.owner = THIS_MODULE,
.name = "ehci-platform",
.pm = &ehci_platform_pm_ops,
+ .of_match_table = of_match_ptr(vt8500_ehci_ids),
}
};
struct ehci_qh_hw *hw = qh->hw;
/* writes to an active overlay are unsafe */
- BUG_ON(qh->qh_state != QH_STATE_IDLE);
+ WARN_ON(qh->qh_state != QH_STATE_IDLE);
hw->hw_qtd_next = QTD_NEXT(ehci, qtd->qtd_dma);
hw->hw_alt_next = EHCI_LIST_END(ehci);
{
struct ehci_qtd *qtd;
- if (list_empty (&qh->qtd_list))
- qtd = qh->dummy;
- else {
- qtd = list_entry (qh->qtd_list.next,
- struct ehci_qtd, qtd_list);
- /*
- * first qtd may already be partially processed.
- * If we come here during unlink, the QH overlay region
- * might have reference to the just unlinked qtd. The
- * qtd is updated in qh_completions(). Update the QH
- * overlay here.
- */
- if (qh->hw->hw_token & ACTIVE_BIT(ehci)) {
- qh->hw->hw_qtd_next = qtd->hw_next;
- qtd = NULL;
- }
- }
+ qtd = list_entry(qh->qtd_list.next, struct ehci_qtd, qtd_list);
- if (qtd)
- qh_update (ehci, qh, qtd);
+ /*
+ * first qtd may already be partially processed.
+ * If we come here during unlink, the QH overlay region
+ * might have reference to the just unlinked qtd. The
+ * qtd is updated in qh_completions(). Update the QH
+ * overlay here.
+ */
+ if (qh->hw->hw_token & ACTIVE_BIT(ehci))
+ qh->hw->hw_qtd_next = qtd->hw_next;
+ else
+ qh_update(ehci, qh, qtd);
}
/*-------------------------------------------------------------------------*/
/*
* Process and free completed qtds for a qh, returning URBs to drivers.
- * Chases up to qh->hw_current. Returns number of completions called,
- * indicating how much "real" work we did.
+ * Chases up to qh->hw_current. Returns nonzero if the caller should
+ * unlink qh.
*/
static unsigned
qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
struct list_head *entry, *tmp;
int last_status;
int stopped;
- unsigned count = 0;
u8 state;
struct ehci_qh_hw *hw = qh->hw;
- if (unlikely (list_empty (&qh->qtd_list)))
- return count;
-
/* completions (or tasks on other cpus) must never clobber HALT
* till we've gone through and cleaned everything up, even when
* they add urbs to this qh's queue or mark them for unlinking.
rescan:
last = NULL;
last_status = -EINPROGRESS;
- qh->needs_rescan = 0;
+ qh->dequeue_during_giveback = 0;
/* remove de-activated QTDs from front of queue.
* after faults (including short reads), cleanup this urb
if (last) {
if (likely (last->urb != urb)) {
ehci_urb_done(ehci, last->urb, last_status);
- count++;
last_status = -EINPROGRESS;
}
ehci_qtd_free (ehci, last);
/* last urb's completion might still need calling */
if (likely (last != NULL)) {
ehci_urb_done(ehci, last->urb, last_status);
- count++;
ehci_qtd_free (ehci, last);
}
/* Do we need to rescan for URBs dequeued during a giveback? */
- if (unlikely(qh->needs_rescan)) {
+ if (unlikely(qh->dequeue_during_giveback)) {
/* If the QH is already unlinked, do the rescan now. */
if (state == QH_STATE_IDLE)
goto rescan;
- /* Otherwise we have to wait until the QH is fully unlinked.
- * Our caller will start an unlink if qh->needs_rescan is
- * set. But if an unlink has already started, nothing needs
- * to be done.
- */
- if (state != QH_STATE_LINKED)
- qh->needs_rescan = 0;
+ /* Otherwise the caller must unlink the QH. */
}
/* restore original state; caller must unlink or relink */
/* be sure the hardware's done with the qh before refreshing
* it after fault cleanup, or recovering from silicon wrongly
* overlaying the dummy qtd (which reduces DMA chatter).
+ *
+ * We won't refresh a QH that's linked (after the HC
+ * stopped the queue). That avoids a race:
+ * - HC reads first part of QH;
+ * - CPU updates that first part and the token;
+ * - HC reads rest of that QH, including token
+ * Result: HC gets an inconsistent image, and then
+ * DMAs to/from the wrong memory (corrupting it).
+ *
+ * That should be rare for interrupt transfers,
+ * except maybe high bandwidth ...
*/
- if (stopped != 0 || hw->hw_qtd_next == EHCI_LIST_END(ehci)) {
- switch (state) {
- case QH_STATE_IDLE:
- qh_refresh(ehci, qh);
- break;
- case QH_STATE_LINKED:
- /* We won't refresh a QH that's linked (after the HC
- * stopped the queue). That avoids a race:
- * - HC reads first part of QH;
- * - CPU updates that first part and the token;
- * - HC reads rest of that QH, including token
- * Result: HC gets an inconsistent image, and then
- * DMAs to/from the wrong memory (corrupting it).
- *
- * That should be rare for interrupt transfers,
- * except maybe high bandwidth ...
- */
+ if (stopped != 0 || hw->hw_qtd_next == EHCI_LIST_END(ehci))
+ qh->exception = 1;
- /* Tell the caller to start an unlink */
- qh->needs_rescan = 1;
- break;
- /* otherwise, unlink already started */
- }
- }
-
- return count;
+ /* Let the caller know if the QH needs to be unlinked. */
+ return qh->exception;
}
/*-------------------------------------------------------------------------*/
/* NOTE: if (PIPE_INTERRUPT) { scheduler sets s-mask } */
- /* init as live, toggle clear, advance to dummy */
+ /* init as live, toggle clear */
qh->qh_state = QH_STATE_IDLE;
hw = qh->hw;
hw->hw_info1 = cpu_to_hc32(ehci, info1);
hw->hw_info2 = cpu_to_hc32(ehci, info2);
qh->is_out = !is_input;
usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe), !is_input, 1);
- qh_refresh (ehci, qh);
return qh;
}
if (--ehci->async_count)
return;
- /* The async schedule and async_unlink list are supposed to be empty */
- WARN_ON(ehci->async->qh_next.qh || ehci->async_unlink);
+ /* The async schedule and unlink lists are supposed to be empty */
+ WARN_ON(ehci->async->qh_next.qh || !list_empty(&ehci->async_unlink) ||
+ !list_empty(&ehci->async_idle));
/* Don't turn off the schedule until ASS is 1 */
ehci_poll_ASS(ehci);
head->qh_next.qh = qh;
head->hw->hw_next = dma;
- qh->xacterrs = 0;
qh->qh_state = QH_STATE_LINKED;
+ qh->xacterrs = 0;
+ qh->exception = 0;
/* qtd completions reported later by interrupt */
enable_async(ehci);
/* Add to the end of the list of QHs waiting for the next IAAD */
qh->qh_state = QH_STATE_UNLINK_WAIT;
- if (ehci->async_unlink)
- ehci->async_unlink_last->unlink_next = qh;
- else
- ehci->async_unlink = qh;
- ehci->async_unlink_last = qh;
+ list_add_tail(&qh->unlink_node, &ehci->async_unlink);
/* Unlink it from the schedule */
prev = ehci->async;
ehci->qh_scan_next = qh->qh_next.qh;
}
-static void start_iaa_cycle(struct ehci_hcd *ehci, bool nested)
+static void start_iaa_cycle(struct ehci_hcd *ehci)
{
- /*
- * Do nothing if an IAA cycle is already running or
- * if one will be started shortly.
- */
- if (ehci->async_iaa || ehci->async_unlinking)
+ /* Do nothing if an IAA cycle is already running */
+ if (ehci->iaa_in_progress)
return;
+ ehci->iaa_in_progress = true;
/* If the controller isn't running, we don't have to wait for it */
if (unlikely(ehci->rh_state < EHCI_RH_RUNNING)) {
-
- /* Do all the waiting QHs */
- ehci->async_iaa = ehci->async_unlink;
- ehci->async_unlink = NULL;
-
- if (!nested) /* Avoid recursion */
- end_unlink_async(ehci);
+ end_unlink_async(ehci);
/* Otherwise start a new IAA cycle */
} else if (likely(ehci->rh_state == EHCI_RH_RUNNING)) {
- struct ehci_qh *qh;
-
- /* Do only the first waiting QH (nVidia bug?) */
- qh = ehci->async_unlink;
-
- /*
- * Intel (?) bug: The HC can write back the overlay region
- * even after the IAA interrupt occurs. In self-defense,
- * always go through two IAA cycles for each QH.
- */
- if (qh->qh_state == QH_STATE_UNLINK_WAIT) {
- qh->qh_state = QH_STATE_UNLINK;
- } else {
- ehci->async_iaa = qh;
- ehci->async_unlink = qh->unlink_next;
- qh->unlink_next = NULL;
- }
/* Make sure the unlinks are all visible to the hardware */
wmb();
static void end_unlink_async(struct ehci_hcd *ehci)
{
struct ehci_qh *qh;
+ bool early_exit;
if (ehci->has_synopsys_hc_bug)
ehci_writel(ehci, (u32) ehci->async->qh_dma,
&ehci->regs->async_next);
+ /* The current IAA cycle has ended */
+ ehci->iaa_in_progress = false;
+
+ if (list_empty(&ehci->async_unlink))
+ return;
+ qh = list_first_entry(&ehci->async_unlink, struct ehci_qh,
+ unlink_node); /* QH whose IAA cycle just ended */
+
+ /*
+ * If async_unlinking is set then this routine is already running,
+ * either on the stack or on another CPU.
+ */
+ early_exit = ehci->async_unlinking;
+
+ /* If the controller isn't running, process all the waiting QHs */
+ if (ehci->rh_state < EHCI_RH_RUNNING)
+ list_splice_tail_init(&ehci->async_unlink, &ehci->async_idle);
+
+ /*
+ * Intel (?) bug: The HC can write back the overlay region even
+ * after the IAA interrupt occurs. In self-defense, always go
+ * through two IAA cycles for each QH.
+ */
+ else if (qh->qh_state == QH_STATE_UNLINK_WAIT) {
+ qh->qh_state = QH_STATE_UNLINK;
+ early_exit = true;
+ }
+
+ /* Otherwise process only the first waiting QH (NVIDIA bug?) */
+ else
+ list_move_tail(&qh->unlink_node, &ehci->async_idle);
+
+ /* Start a new IAA cycle if any QHs are waiting for it */
+ if (!list_empty(&ehci->async_unlink))
+ start_iaa_cycle(ehci);
+
+ /*
+ * Don't allow nesting or concurrent calls,
+ * or wait for the second IAA cycle for the next QH.
+ */
+ if (early_exit)
+ return;
+
/* Process the idle QHs */
- restart:
ehci->async_unlinking = true;
- while (ehci->async_iaa) {
- qh = ehci->async_iaa;
- ehci->async_iaa = qh->unlink_next;
- qh->unlink_next = NULL;
+ while (!list_empty(&ehci->async_idle)) {
+ qh = list_first_entry(&ehci->async_idle, struct ehci_qh,
+ unlink_node);
+ list_del(&qh->unlink_node);
qh->qh_state = QH_STATE_IDLE;
qh->qh_next.qh = NULL;
- qh_completions(ehci, qh);
+ if (!list_empty(&qh->qtd_list))
+ qh_completions(ehci, qh);
if (!list_empty(&qh->qtd_list) &&
ehci->rh_state == EHCI_RH_RUNNING)
qh_link_async(ehci, qh);
disable_async(ehci);
}
ehci->async_unlinking = false;
-
- /* Start a new IAA cycle if any QHs are waiting for it */
- if (ehci->async_unlink) {
- start_iaa_cycle(ehci, true);
- if (unlikely(ehci->rh_state < EHCI_RH_RUNNING))
- goto restart;
- }
}
static void start_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh);
{
struct ehci_qh *qh;
struct ehci_qh *qh_to_unlink = NULL;
- bool check_unlinks_later = false;
int count = 0;
/* Find the last async QH which has been empty for a timer cycle */
if (list_empty(&qh->qtd_list) &&
qh->qh_state == QH_STATE_LINKED) {
++count;
- if (qh->unlink_cycle == ehci->async_unlink_cycle)
- check_unlinks_later = true;
- else
+ if (qh->unlink_cycle != ehci->async_unlink_cycle)
qh_to_unlink = qh;
}
}
/* If nothing else is being unlinked, unlink the last empty QH */
- if (!ehci->async_iaa && !ehci->async_unlink && qh_to_unlink) {
+ if (list_empty(&ehci->async_unlink) && qh_to_unlink) {
start_unlink_async(ehci, qh_to_unlink);
--count;
}
}
/* The root hub is suspended; unlink all the async QHs */
-static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
+static void __maybe_unused unlink_empty_async_suspended(struct ehci_hcd *ehci)
{
struct ehci_qh *qh;
WARN_ON(!list_empty(&qh->qtd_list));
single_unlink_async(ehci, qh);
}
- start_iaa_cycle(ehci, false);
+ start_iaa_cycle(ehci);
}
/* makes sure the async qh will become idle */
static void start_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh)
{
- /*
- * If the QH isn't linked then there's nothing we can do
- * unless we were called during a giveback, in which case
- * qh_completions() has to deal with it.
- */
- if (qh->qh_state != QH_STATE_LINKED) {
- if (qh->qh_state == QH_STATE_COMPLETING)
- qh->needs_rescan = 1;
+ /* If the QH isn't linked then there's nothing we can do. */
+ if (qh->qh_state != QH_STATE_LINKED)
return;
- }
single_unlink_async(ehci, qh);
- start_iaa_cycle(ehci, false);
+ start_iaa_cycle(ehci);
}
/*-------------------------------------------------------------------------*/
while (ehci->qh_scan_next) {
qh = ehci->qh_scan_next;
ehci->qh_scan_next = qh->qh_next.qh;
- rescan:
+
/* clean any finished work for this qh */
if (!list_empty(&qh->qtd_list)) {
int temp;
* in single_unlink_async().
*/
temp = qh_completions(ehci, qh);
- if (qh->needs_rescan) {
+ if (unlikely(temp)) {
start_unlink_async(ehci, qh);
} else if (list_empty(&qh->qtd_list)
&& qh->qh_state == QH_STATE_LINKED) {
qh->unlink_cycle = ehci->async_unlink_cycle;
check_unlinks_later = true;
- } else if (temp != 0)
- goto rescan;
+ }
}
}
static void s5p_setup_vbus_gpio(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
int err;
int gpio;
- if (!pdev->dev.of_node)
+ if (!dev->of_node)
return;
- gpio = of_get_named_gpio(pdev->dev.of_node,
- "samsung,vbus-gpio", 0);
+ gpio = of_get_named_gpio(dev->of_node, "samsung,vbus-gpio", 0);
if (!gpio_is_valid(gpio))
return;
- err = gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH, "ehci_vbus_gpio");
+ err = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_HIGH,
+ "ehci_vbus_gpio");
if (err)
- dev_err(&pdev->dev, "can't request ehci vbus gpio %d", gpio);
+ dev_err(dev, "can't request ehci vbus gpio %d", gpio);
}
static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);
}
qh->qh_state = QH_STATE_LINKED;
qh->xacterrs = 0;
+ qh->exception = 0;
/* update per-qh bandwidth for usbfs */
ehci_to_hcd(ehci)->self.bandwidth_allocated += qh->period
static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh)
{
- /* If the QH isn't linked then there's nothing we can do
- * unless we were called during a giveback, in which case
- * qh_completions() has to deal with it.
- */
- if (qh->qh_state != QH_STATE_LINKED) {
- if (qh->qh_state == QH_STATE_COMPLETING)
- qh->needs_rescan = 1;
+ /* If the QH isn't linked then there's nothing we can do. */
+ if (qh->qh_state != QH_STATE_LINKED)
return;
- }
qh_unlink_periodic (ehci, qh);
qh->unlink_cycle = ehci->intr_unlink_cycle;
/* New entries go at the end of the intr_unlink list */
- if (ehci->intr_unlink)
- ehci->intr_unlink_last->unlink_next = qh;
- else
- ehci->intr_unlink = qh;
- ehci->intr_unlink_last = qh;
+ list_add_tail(&qh->unlink_node, &ehci->intr_unlink);
if (ehci->intr_unlinking)
; /* Avoid recursive calls */
else if (ehci->rh_state < EHCI_RH_RUNNING)
ehci_handle_intr_unlinks(ehci);
- else if (ehci->intr_unlink == qh) {
+ else if (ehci->intr_unlink.next == &qh->unlink_node) {
ehci_enable_event(ehci, EHCI_HRTIMER_UNLINK_INTR, true);
++ehci->intr_unlink_cycle;
}
qh->qh_state = QH_STATE_IDLE;
hw->hw_next = EHCI_LIST_END(ehci);
- qh_completions(ehci, qh);
+ if (!list_empty(&qh->qtd_list))
+ qh_completions(ehci, qh);
/* reschedule QH iff another request is queued */
if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) {
unsigned frame; /* 0..(qh->period - 1), or NO_FRAME */
struct ehci_qh_hw *hw = qh->hw;
- qh_refresh(ehci, qh);
hw->hw_next = EHCI_LIST_END(ehci);
frame = qh->start;
} else
ehci_dbg (ehci, "reused qh %p schedule\n", qh);
- /* stuff into the periodic schedule */
- qh_link_periodic(ehci, qh);
done:
return status;
}
qh = qh_append_tds(ehci, urb, qtd_list, epnum, &urb->ep->hcpriv);
BUG_ON (qh == NULL);
+ /* stuff into the periodic schedule */
+ if (qh->qh_state == QH_STATE_IDLE) {
+ qh_refresh(ehci, qh);
+ qh_link_periodic(ehci, qh);
+ }
+
/* ... update usbfs periodic stats */
ehci_to_hcd(ehci)->self.bandwidth_int_reqs++;
list_for_each_entry_safe(qh, ehci->qh_scan_next, &ehci->intr_qh_list,
intr_node) {
- rescan:
+
/* clean any finished work for this qh */
if (!list_empty(&qh->qtd_list)) {
int temp;
* in qh_unlink_periodic().
*/
temp = qh_completions(ehci, qh);
- if (unlikely(qh->needs_rescan ||
- (list_empty(&qh->qtd_list) &&
- qh->qh_state == QH_STATE_LINKED)))
+ if (unlikely(temp || (list_empty(&qh->qtd_list) &&
+ qh->qh_state == QH_STATE_LINKED)))
start_unlink_intr(ehci, qh);
- else if (temp != 0)
- goto rescan;
}
}
}
static int ehci_hcd_sh_probe(struct platform_device *pdev)
{
- const struct hc_driver *driver = &ehci_sh_hc_driver;
struct resource *res;
struct ehci_sh_priv *priv;
struct ehci_sh_platdata *pdata;
return ret;
}
-static int __exit ehci_hcd_sh_remove(struct platform_device *pdev)
+static int ehci_hcd_sh_remove(struct platform_device *pdev)
{
struct ehci_sh_priv *priv = platform_get_drvdata(pdev);
struct usb_hcd *hcd = priv->hcd;
static struct platform_driver ehci_hcd_sh_driver = {
.probe = ehci_hcd_sh_probe,
- .remove = __exit_p(ehci_hcd_sh_remove),
+ .remove = ehci_hcd_sh_remove,
.shutdown = ehci_hcd_sh_shutdown,
.driver = {
.name = "sh_ehci",
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static int ehci_spear_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
ehci_resume(hcd, false);
return 0;
}
-#endif /* CONFIG_PM */
+#endif /* CONFIG_PM_SLEEP */
static SIMPLE_DEV_PM_OPS(ehci_spear_pm_ops, ehci_spear_drv_suspend,
ehci_spear_drv_resume);
if (want != actual) {
- /* Poll again later, but give up after about 20 ms */
- if (ehci->ASS_poll_count++ < 20) {
+ /* Poll again later, but give up after about 2-4 ms */
+ if (ehci->ASS_poll_count++ < 2) {
ehci_enable_event(ehci, EHCI_HRTIMER_POLL_ASS, true);
return;
}
if (want != actual) {
- /* Poll again later, but give up after about 20 ms */
- if (ehci->PSS_poll_count++ < 20) {
+ /* Poll again later, but give up after about 2-4 ms */
+ if (ehci->PSS_poll_count++ < 2) {
ehci_enable_event(ehci, EHCI_HRTIMER_POLL_PSS, true);
return;
}
* process all the QHs on the list.
*/
ehci->intr_unlinking = true;
- while (ehci->intr_unlink) {
- struct ehci_qh *qh = ehci->intr_unlink;
+ while (!list_empty(&ehci->intr_unlink)) {
+ struct ehci_qh *qh;
+ qh = list_first_entry(&ehci->intr_unlink, struct ehci_qh,
+ unlink_node);
if (!stopped && qh->unlink_cycle == ehci->intr_unlink_cycle)
break;
- ehci->intr_unlink = qh->unlink_next;
- qh->unlink_next = NULL;
+ list_del(&qh->unlink_node);
end_unlink_intr(ehci, qh);
}
/* Handle remaining entries later */
- if (ehci->intr_unlink) {
+ if (!list_empty(&ehci->intr_unlink)) {
ehci_enable_event(ehci, EHCI_HRTIMER_UNLINK_INTR, true);
++ehci->intr_unlink_cycle;
}
/* Handle lost (or very late) IAA interrupts */
static void ehci_iaa_watchdog(struct ehci_hcd *ehci)
{
- if (ehci->rh_state != EHCI_RH_RUNNING)
- return;
+ u32 cmd, status;
/*
* Lost IAA irqs wedge things badly; seen first with a vt8235.
* (a) SMP races against real IAA firing and retriggering, and
* (b) clean HC shutdown, when IAA watchdog was pending.
*/
- if (1) {
- u32 cmd, status;
-
- /* If we get here, IAA is *REALLY* late. It's barely
- * conceivable that the system is so busy that CMD_IAAD
- * is still legitimately set, so let's be sure it's
- * clear before we read STS_IAA. (The HC should clear
- * CMD_IAAD when it sets STS_IAA.)
- */
- cmd = ehci_readl(ehci, &ehci->regs->command);
-
- /*
- * If IAA is set here it either legitimately triggered
- * after the watchdog timer expired (_way_ late, so we'll
- * still count it as lost) ... or a silicon erratum:
- * - VIA seems to set IAA without triggering the IRQ;
- * - IAAD potentially cleared without setting IAA.
- */
- status = ehci_readl(ehci, &ehci->regs->status);
- if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
- COUNT(ehci->stats.lost_iaa);
- ehci_writel(ehci, STS_IAA, &ehci->regs->status);
- }
+ if (!ehci->iaa_in_progress || ehci->rh_state != EHCI_RH_RUNNING)
+ return;
+
+ /* If we get here, IAA is *REALLY* late. It's barely
+ * conceivable that the system is so busy that CMD_IAAD
+ * is still legitimately set, so let's be sure it's
+ * clear before we read STS_IAA. (The HC should clear
+ * CMD_IAAD when it sets STS_IAA.)
+ */
+ cmd = ehci_readl(ehci, &ehci->regs->command);
- ehci_vdbg(ehci, "IAA watchdog: status %x cmd %x\n",
- status, cmd);
- end_unlink_async(ehci);
+ /*
+ * If IAA is set here it either legitimately triggered
+ * after the watchdog timer expired (_way_ late, so we'll
+ * still count it as lost) ... or a silicon erratum:
+ * - VIA seems to set IAA without triggering the IRQ;
+ * - IAAD potentially cleared without setting IAA.
+ */
+ status = ehci_readl(ehci, &ehci->regs->status);
+ if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
+ COUNT(ehci->stats.lost_iaa);
+ ehci_writel(ehci, STS_IAA, &ehci->regs->status);
}
+
+ ehci_dbg(ehci, "IAA watchdog: status %x cmd %x\n", status, cmd);
+ end_unlink_async(ehci);
}
+++ /dev/null
-/*
- * drivers/usb/host/ehci-vt8500.c
- *
- * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * Based on ehci-au1xxx.c
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/err.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-
-static const struct hc_driver vt8500_ehci_hc_driver = {
- .description = hcd_name,
- .product_desc = "VT8500 EHCI",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /*
- * basic lifecycle operations
- */
- .reset = ehci_setup,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
-
- /*
- * scheduling support
- */
- .get_frame_number = ehci_get_frame,
-
- /*
- * root hub support
- */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
-static u64 vt8500_ehci_dma_mask = DMA_BIT_MASK(32);
-
-static int vt8500_ehci_drv_probe(struct platform_device *pdev)
-{
- struct usb_hcd *hcd;
- struct ehci_hcd *ehci;
- struct resource *res;
- int ret;
-
- if (usb_disabled())
- return -ENODEV;
-
- /*
- * Right now device-tree probed devices don't get dma_mask set.
- * Since shared usb code relies on it, set it here for now.
- * Once we have dma capability bindings this can go away.
- */
- if (!pdev->dev.dma_mask)
- pdev->dev.dma_mask = &vt8500_ehci_dma_mask;
-
- if (pdev->resource[1].flags != IORESOURCE_IRQ) {
- pr_debug("resource[1] is not IORESOURCE_IRQ");
- return -ENOMEM;
- }
- hcd = usb_create_hcd(&vt8500_ehci_hc_driver, &pdev->dev, "VT8500");
- if (!hcd)
- return -ENOMEM;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
-
- hcd->regs = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(hcd->regs)) {
- ret = PTR_ERR(hcd->regs);
- goto err1;
- }
-
- ehci = hcd_to_ehci(hcd);
- ehci->caps = hcd->regs;
-
- ret = usb_add_hcd(hcd, pdev->resource[1].start,
- IRQF_SHARED);
- if (ret == 0) {
- platform_set_drvdata(pdev, hcd);
- return ret;
- }
-
-err1:
- usb_put_hcd(hcd);
- return ret;
-}
-
-static int vt8500_ehci_drv_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
-
- usb_remove_hcd(hcd);
- usb_put_hcd(hcd);
- platform_set_drvdata(pdev, NULL);
-
- return 0;
-}
-
-static const struct of_device_id vt8500_ehci_ids[] = {
- { .compatible = "via,vt8500-ehci", },
- { .compatible = "wm,prizm-ehci", },
- {}
-};
-
-static struct platform_driver vt8500_ehci_driver = {
- .probe = vt8500_ehci_drv_probe,
- .remove = vt8500_ehci_drv_remove,
- .shutdown = usb_hcd_platform_shutdown,
- .driver = {
- .name = "vt8500-ehci",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(vt8500_ehci_ids),
- }
-};
-
-MODULE_ALIAS("platform:vt8500-ehci");
-MODULE_DEVICE_TABLE(of, vt8500_ehci_ids);
bool scanning:1;
bool need_rescan:1;
bool intr_unlinking:1;
+ bool iaa_in_progress:1;
bool async_unlinking:1;
bool shutdown:1;
struct ehci_qh *qh_scan_next;
/* async schedule support */
struct ehci_qh *async;
struct ehci_qh *dummy; /* For AMD quirk use */
- struct ehci_qh *async_unlink;
- struct ehci_qh *async_unlink_last;
- struct ehci_qh *async_iaa;
+ struct list_head async_unlink;
+ struct list_head async_idle;
unsigned async_unlink_cycle;
unsigned async_count; /* async activity count */
unsigned i_thresh; /* uframes HC might cache */
union ehci_shadow *pshadow; /* mirror hw periodic table */
- struct ehci_qh *intr_unlink;
- struct ehci_qh *intr_unlink_last;
+ struct list_head intr_unlink;
unsigned intr_unlink_cycle;
unsigned now_frame; /* frame from HC hardware */
unsigned last_iso_frame; /* last frame scanned for iso */
struct list_head qtd_list; /* sw qtd list */
struct list_head intr_node; /* list of intr QHs */
struct ehci_qtd *dummy;
- struct ehci_qh *unlink_next; /* next on unlink list */
+ struct list_head unlink_node;
unsigned unlink_cycle;
- u8 needs_rescan; /* Dequeue during giveback */
u8 qh_state;
#define QH_STATE_LINKED 1 /* HC sees this */
#define QH_STATE_UNLINK 2 /* HC may still see this */
struct usb_device *dev; /* access to TT */
unsigned is_out:1; /* bulk or intr OUT */
unsigned clearing_tt:1; /* Clear-TT-Buf in progress */
+ unsigned dequeue_during_giveback:1;
+ unsigned exception:1; /* got a fault, or an unlink
+ was requested */
};
/*-------------------------------------------------------------------------*/
/* See usb 7.1.7.5: root hubs must issue at least 50 msec reset signaling,
* not necessarily continuous ... to guard against resume signaling.
- * The short timeout is safe for non-root hubs, and is backward-compatible
- * with earlier Linux hosts.
*/
-#ifdef CONFIG_USB_SUSPEND
#define PORT_RESET_MSEC 50
-#else
-#define PORT_RESET_MSEC 10
-#endif
/* this timer value might be vendor-specific ... */
#define PORT_RESET_HW_MSEC 10
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
+#include <linux/of.h>
+#include <linux/dma-mapping.h>
/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*/
+static u64 omap_ohci_dma_mask = DMA_BIT_MASK(32);
+
/*
* configure so an HC device and id are always provided
* always called with process context; sleeping is OK
return -ENODEV;
}
- irq = platform_get_irq_byname(pdev, "ohci-irq");
+ irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "OHCI irq failed\n");
return -ENODEV;
}
- res = platform_get_resource_byname(pdev,
- IORESOURCE_MEM, "ohci");
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "UHH OHCI get resource failed\n");
return -ENOMEM;
return -ENOMEM;
}
+ /*
+ * Right now device-tree probed devices don't get dma_mask set.
+ * Since shared usb code relies on it, set it here for now.
+ * Once we have dma capability bindings this can go away.
+ */
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &omap_ohci_dma_mask;
hcd = usb_create_hcd(&ohci_omap3_hc_driver, dev,
dev_name(dev));
hcd->driver->shutdown(hcd);
}
+static const struct of_device_id omap_ohci_dt_ids[] = {
+ { .compatible = "ti,ohci-omap3" },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, omap_ohci_dt_ids);
+
static struct platform_driver ohci_hcd_omap3_driver = {
.probe = ohci_hcd_omap3_probe,
.remove = ohci_hcd_omap3_remove,
.shutdown = ohci_hcd_omap3_shutdown,
.driver = {
.name = "ohci-omap3",
+ .of_match_table = of_match_ptr(omap_ohci_dt_ids),
},
};
/* for this device there's no useful distinction between the controller
* and its root hub, except that the root hub only gets direct PM calls
- * when CONFIG_USB_SUSPEND is enabled.
+ * when CONFIG_PM_RUNTIME is enabled.
*/
static int
#ifdef CONFIG_PM
-/* for this device there's no useful distinction between the controller
-* and its root hub, except that the root hub only gets direct PM calls
-* when CONFIG_USB_SUSPEND is enabled.
-*/
+/*
+ * for this device there's no useful distinction between the controller
+ * and its root hub, except that the root hub only gets direct PM calls
+ * when CONFIG_PM_RUNTIME is enabled.
+ */
static int u132_suspend(struct platform_device *pdev, pm_message_t state)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
set_bit(port_index, &bus_state->bus_suspended);
}
/* USB core sets remote wake mask for USB 3.0 hubs,
- * including the USB 3.0 roothub, but only if CONFIG_USB_SUSPEND
+ * including the USB 3.0 roothub, but only if CONFIG_PM_RUNTIME
* is enabled, so also enable remote wake here.
*/
if (hcd->self.root_hub->do_remote_wakeup) {
return raw_port;
}
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
/* BESL to HIRD Encoding array for USB2 LPM */
static int xhci_besl_encoding[16] = {125, 150, 200, 300, 400, 500, 1000, 2000,
return 0;
}
-#endif /* CONFIG_USB_SUSPEND */
+#endif /* CONFIG_PM_RUNTIME */
/*---------------------- USB 3.0 Link PM functions ------------------------*/
/* Allocate memory for our private */
if (!(sisusb = kzalloc(sizeof(*sisusb), GFP_KERNEL))) {
- dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate memory for private data\n");
+ dev_err(&dev->dev, "Failed to allocate memory for private data\n");
return -ENOMEM;
}
kref_init(&sisusb->kref);
.id_table = usb3503_id,
};
-static int __init usb3503_init(void)
-{
- return i2c_add_driver(&usb3503_driver);
-}
-
-static void __exit usb3503_exit(void)
-{
- i2c_del_driver(&usb3503_driver);
-}
-
-module_init(usb3503_init);
-module_exit(usb3503_exit);
+module_i2c_driver(usb3503_driver);
MODULE_AUTHOR("Dongjin Kim <tobetter@gmail.com>");
MODULE_DESCRIPTION("USB3503 USB HUB driver");
static struct isp1301 *the_transceiver;
-static int __exit isp1301_remove(struct i2c_client *i2c)
+static int isp1301_remove(struct i2c_client *i2c)
{
struct isp1301 *isp;
.name = "isp1301_omap",
},
.probe = isp1301_probe,
- .remove = __exit_p(isp1301_remove),
+ .remove = isp1301_remove,
.id_table = isp1301_id,
};
return 0;
}
-static int __exit twl4030_usb_remove(struct platform_device *pdev)
+static int twl4030_usb_remove(struct platform_device *pdev)
{
struct twl4030_usb *twl = platform_get_drvdata(pdev);
int val;
static struct platform_driver twl4030_usb_driver = {
.probe = twl4030_usb_probe,
- .remove = __exit_p(twl4030_usb_remove),
+ .remove = twl4030_usb_remove,
.driver = {
.name = "twl4030_usb",
.owner = THIS_MODULE,
return 0;
}
-static int __exit twl6030_usb_remove(struct platform_device *pdev)
+static int twl6030_usb_remove(struct platform_device *pdev)
{
struct twl6030_usb *twl = platform_get_drvdata(pdev);
static struct platform_driver twl6030_usb_driver = {
.probe = twl6030_usb_probe,
- .remove = __exit_p(twl6030_usb_remove),
+ .remove = twl6030_usb_remove,
.driver = {
.name = "twl6030_usb",
.owner = THIS_MODULE,
return ret;
}
-static int __exit mv_u3d_phy_remove(struct platform_device *pdev)
+static int mv_u3d_phy_remove(struct platform_device *pdev)
{
struct mv_u3d_phy *mv_u3d_phy = platform_get_drvdata(pdev);
}
struct ark3116_private {
- struct async_icount icount;
int irda; /* 1 for irda device */
/* protects hw register updates */
{
struct usb_serial *serial = port->serial;
- if (serial->dev) {
- /* disable DMA */
- ark3116_write_reg(serial, UART_FCR, 0);
-
- /* deactivate interrupts */
- ark3116_write_reg(serial, UART_IER, 0);
+ /* disable DMA */
+ ark3116_write_reg(serial, UART_FCR, 0);
- usb_serial_generic_close(port);
- if (serial->num_interrupt_in)
- usb_kill_urb(port->interrupt_in_urb);
- }
+ /* deactivate interrupts */
+ ark3116_write_reg(serial, UART_IER, 0);
+ usb_serial_generic_close(port);
+ if (serial->num_interrupt_in)
+ usb_kill_urb(port->interrupt_in_urb);
}
static int ark3116_open(struct tty_struct *tty, struct usb_serial_port *port)
return result;
}
-static int ark3116_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct ark3116_private *priv = usb_get_serial_port_data(port);
- struct async_icount cnow = priv->icount;
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
- return 0;
-}
-
static int ark3116_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
- struct ark3116_private *priv = usb_get_serial_port_data(port);
struct serial_struct serstruct;
void __user *user_arg = (void __user *)arg;
if (copy_from_user(&serstruct, user_arg, sizeof(serstruct)))
return -EFAULT;
return 0;
- case TIOCMIWAIT:
- for (;;) {
- struct async_icount prev = priv->icount;
- interruptible_sleep_on(&port->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- if ((prev.rng == priv->icount.rng) &&
- (prev.dsr == priv->icount.dsr) &&
- (prev.dcd == priv->icount.dcd) &&
- (prev.cts == priv->icount.cts))
- return -EIO;
- if ((arg & TIOCM_RNG &&
- (prev.rng != priv->icount.rng)) ||
- (arg & TIOCM_DSR &&
- (prev.dsr != priv->icount.dsr)) ||
- (arg & TIOCM_CD &&
- (prev.dcd != priv->icount.dcd)) ||
- (arg & TIOCM_CTS &&
- (prev.cts != priv->icount.cts)))
- return 0;
- }
- break;
}
return -ENOIOCTLCMD;
if (msr & UART_MSR_ANY_DELTA) {
/* update input line counters */
if (msr & UART_MSR_DCTS)
- priv->icount.cts++;
+ port->icount.cts++;
if (msr & UART_MSR_DDSR)
- priv->icount.dsr++;
+ port->icount.dsr++;
if (msr & UART_MSR_DDCD)
- priv->icount.dcd++;
+ port->icount.dcd++;
if (msr & UART_MSR_TERI)
- priv->icount.rng++;
- wake_up_interruptible(&port->delta_msr_wait);
+ port->icount.rng++;
+ wake_up_interruptible(&port->port.delta_msr_wait);
}
}
if (lsr&UART_LSR_BRK_ERROR_BITS) {
if (lsr & UART_LSR_BI)
- priv->icount.brk++;
+ port->icount.brk++;
if (lsr & UART_LSR_FE)
- priv->icount.frame++;
+ port->icount.frame++;
if (lsr & UART_LSR_PE)
- priv->icount.parity++;
+ port->icount.parity++;
if (lsr & UART_LSR_OE)
- priv->icount.overrun++;
+ port->icount.overrun++;
}
}
.ioctl = ark3116_ioctl,
.tiocmget = ark3116_tiocmget,
.tiocmset = ark3116_tiocmset,
- .get_icount = ark3116_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.open = ark3116_open,
.close = ark3116_close,
.break_ctl = ark3116_break_ctl,
/* make sure suspend/resume doesn't race against port_remove */
usb_autopm_get_interface(port->serial->interface);
+ minor = port->number;
+ tty_unregister_device(usb_serial_tty_driver, minor);
+
device_remove_file(&port->dev, &dev_attr_port_number);
driver = port->serial->type;
if (driver->port_remove)
retval = driver->port_remove(port);
- minor = port->number;
- tty_unregister_device(usb_serial_tty_driver, minor);
dev_info(dev, "%s converter now disconnected from ttyUSB%d\n",
driver->description, minor);
priv->line_control &= ~(CH341_BIT_RTS | CH341_BIT_DTR);
spin_unlock_irqrestore(&priv->lock, flags);
ch341_set_handshake(port->serial->dev, priv->line_control);
- wake_up_interruptible(&port->delta_msr_wait);
}
static void ch341_close(struct usb_serial_port *port)
tty_kref_put(tty);
}
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
}
exit:
__func__, status);
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
+static int ch341_tiocmiwait(struct tty_struct *tty, unsigned long arg)
{
+ struct usb_serial_port *port = tty->driver_data;
struct ch341_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
u8 prevstatus;
spin_unlock_irqrestore(&priv->lock, flags);
while (!multi_change) {
- interruptible_sleep_on(&port->delta_msr_wait);
+ interruptible_sleep_on(&port->port.delta_msr_wait);
/* see if a signal did it */
if (signal_pending(current))
return -ERESTARTSYS;
return 0;
}
-static int ch341_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- struct usb_serial_port *port = tty->driver_data;
-
- dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__, port->number, cmd);
-
- switch (cmd) {
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number);
- return wait_modem_info(port, arg);
-
- default:
- dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd);
- break;
- }
-
- return -ENOIOCTLCMD;
-}
-
static int ch341_tiocmget(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
.dtr_rts = ch341_dtr_rts,
.carrier_raised = ch341_carrier_raised,
.close = ch341_close,
- .ioctl = ch341_ioctl,
.set_termios = ch341_set_termios,
.break_ctl = ch341_break_ctl,
.tiocmget = ch341_tiocmget,
.tiocmset = ch341_tiocmset,
+ .tiocmiwait = ch341_tiocmiwait,
.read_int_callback = ch341_read_int_callback,
.port_probe = ch341_port_probe,
.port_remove = ch341_port_remove,
static void cp210x_close(struct usb_serial_port *port)
{
usb_serial_generic_close(port);
-
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected)
- cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE);
- mutex_unlock(&port->serial->disc_mutex);
+ cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE);
}
/*
#define CYBERJACK_PRODUCT_ID 0x0100
/* Function prototypes */
-static void cyberjack_disconnect(struct usb_serial *serial);
static int cyberjack_port_probe(struct usb_serial_port *port);
static int cyberjack_port_remove(struct usb_serial_port *port);
static int cyberjack_open(struct tty_struct *tty,
.description = "Reiner SCT Cyberjack USB card reader",
.id_table = id_table,
.num_ports = 1,
- .disconnect = cyberjack_disconnect,
.port_probe = cyberjack_port_probe,
.port_remove = cyberjack_port_remove,
.open = cyberjack_open,
{
struct cyberjack_private *priv;
+ usb_kill_urb(port->interrupt_in_urb);
+
priv = usb_get_serial_port_data(port);
kfree(priv);
return 0;
}
-static void cyberjack_disconnect(struct usb_serial *serial)
-{
- int i;
-
- for (i = 0; i < serial->num_ports; ++i)
- usb_kill_urb(serial->port[i]->interrupt_in_urb);
-}
-
static int cyberjack_open(struct tty_struct *tty,
struct usb_serial_port *port)
{
static void cyberjack_close(struct usb_serial_port *port)
{
- if (port->serial->dev) {
- /* shutdown any bulk reads that might be going on */
- usb_kill_urb(port->write_urb);
- usb_kill_urb(port->read_urb);
- }
+ usb_kill_urb(port->write_urb);
+ usb_kill_urb(port->read_urb);
}
static int cyberjack_write(struct tty_struct *tty,
const unsigned char *buf, int count);
static void cypress_send(struct usb_serial_port *port);
static int cypress_write_room(struct tty_struct *tty);
-static int cypress_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg);
static void cypress_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old);
static int cypress_tiocmget(struct tty_struct *tty);
static int cypress_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
+static int cypress_tiocmiwait(struct tty_struct *tty, unsigned long arg);
static int cypress_chars_in_buffer(struct tty_struct *tty);
static void cypress_throttle(struct tty_struct *tty);
static void cypress_unthrottle(struct tty_struct *tty);
.dtr_rts = cypress_dtr_rts,
.write = cypress_write,
.write_room = cypress_write_room,
- .ioctl = cypress_ioctl,
.set_termios = cypress_set_termios,
.tiocmget = cypress_tiocmget,
.tiocmset = cypress_tiocmset,
+ .tiocmiwait = cypress_tiocmiwait,
.chars_in_buffer = cypress_chars_in_buffer,
.throttle = cypress_throttle,
.unthrottle = cypress_unthrottle,
.dtr_rts = cypress_dtr_rts,
.write = cypress_write,
.write_room = cypress_write_room,
- .ioctl = cypress_ioctl,
.set_termios = cypress_set_termios,
.tiocmget = cypress_tiocmget,
.tiocmset = cypress_tiocmset,
+ .tiocmiwait = cypress_tiocmiwait,
.chars_in_buffer = cypress_chars_in_buffer,
.throttle = cypress_throttle,
.unthrottle = cypress_unthrottle,
.dtr_rts = cypress_dtr_rts,
.write = cypress_write,
.write_room = cypress_write_room,
- .ioctl = cypress_ioctl,
.set_termios = cypress_set_termios,
.tiocmget = cypress_tiocmget,
.tiocmset = cypress_tiocmset,
+ .tiocmiwait = cypress_tiocmiwait,
.chars_in_buffer = cypress_chars_in_buffer,
.throttle = cypress_throttle,
.unthrottle = cypress_unthrottle,
struct cypress_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
- /* writing is potentially harmful, lock must be taken */
- mutex_lock(&port->serial->disc_mutex);
- if (port->serial->disconnected) {
- mutex_unlock(&port->serial->disc_mutex);
- return;
- }
spin_lock_irqsave(&priv->lock, flags);
kfifo_reset_out(&priv->write_fifo);
spin_unlock_irqrestore(&priv->lock, flags);
if (stats)
dev_info(&port->dev, "Statistics: %d Bytes In | %d Bytes Out | %d Commands Issued\n",
priv->bytes_in, priv->bytes_out, priv->cmd_count);
- mutex_unlock(&port->serial->disc_mutex);
} /* cypress_close */
}
-static int cypress_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
+static int cypress_tiocmiwait(struct tty_struct *tty, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
struct cypress_private *priv = usb_get_serial_port_data(port);
-
- dev_dbg(&port->dev, "%s - port %d, cmd 0x%.4x\n", __func__, port->number, cmd);
-
- switch (cmd) {
- /* This code comes from drivers/char/serial.c and ftdi_sio.c */
- case TIOCMIWAIT:
- for (;;) {
- interruptible_sleep_on(&port->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- {
- char diff = priv->diff_status;
- if (diff == 0)
- return -EIO; /* no change => error */
-
- /* consume all events */
- priv->diff_status = 0;
-
- /* return 0 if caller wanted to know about
- these bits */
- if (((arg & TIOCM_RNG) && (diff & UART_RI)) ||
- ((arg & TIOCM_DSR) && (diff & UART_DSR)) ||
- ((arg & TIOCM_CD) && (diff & UART_CD)) ||
- ((arg & TIOCM_CTS) && (diff & UART_CTS)))
- return 0;
- /* otherwise caller can't care less about what
- * happened, and so we continue to wait for
- * more events.
- */
- }
- }
- return 0;
- default:
- break;
+ char diff;
+
+ for (;;) {
+ interruptible_sleep_on(&port->port.delta_msr_wait);
+ /* see if a signal did it */
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+
+ if (port->serial->disconnected)
+ return -EIO;
+
+ diff = priv->diff_status;
+ if (diff == 0)
+ return -EIO; /* no change => error */
+
+ /* consume all events */
+ priv->diff_status = 0;
+
+ /* return 0 if caller wanted to know about
+ these bits */
+ if (((arg & TIOCM_RNG) && (diff & UART_RI)) ||
+ ((arg & TIOCM_DSR) && (diff & UART_DSR)) ||
+ ((arg & TIOCM_CD) && (diff & UART_CD)) ||
+ ((arg & TIOCM_CTS) && (diff & UART_CTS)))
+ return 0;
+ /* otherwise caller can't care less about what
+ * happened, and so we continue to wait for
+ * more events.
+ */
}
- dev_dbg(&port->dev, "%s - arg not supported - it was 0x%04x - check include/asm/ioctls.h\n", __func__, cmd);
- return -ENOIOCTLCMD;
-} /* cypress_ioctl */
+ return 0;
+}
static void cypress_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
if (priv->current_status != priv->prev_status) {
priv->diff_status |= priv->current_status ^
priv->prev_status;
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
priv->prev_status = priv->current_status;
}
spin_unlock_irqrestore(&priv->lock, flags);
unsigned char dp_out_buf[DIGI_OUT_BUF_SIZE];
int dp_write_urb_in_use;
unsigned int dp_modem_signals;
- wait_queue_head_t dp_modem_change_wait;
int dp_transmit_idle;
wait_queue_head_t dp_transmit_idle_wait;
int dp_throttled;
if (port->serial->disconnected)
goto exit;
- if (port->serial->dev) {
- /* FIXME: Transmit idle belongs in the wait_unti_sent path */
- digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT);
-
- /* disable input flow control */
- buf[0] = DIGI_CMD_SET_INPUT_FLOW_CONTROL;
- buf[1] = priv->dp_port_num;
- buf[2] = DIGI_DISABLE;
- buf[3] = 0;
-
- /* disable output flow control */
- buf[4] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL;
- buf[5] = priv->dp_port_num;
- buf[6] = DIGI_DISABLE;
- buf[7] = 0;
-
- /* disable reading modem signals automatically */
- buf[8] = DIGI_CMD_READ_INPUT_SIGNALS;
- buf[9] = priv->dp_port_num;
- buf[10] = DIGI_DISABLE;
- buf[11] = 0;
-
- /* disable receive */
- buf[12] = DIGI_CMD_RECEIVE_ENABLE;
- buf[13] = priv->dp_port_num;
- buf[14] = DIGI_DISABLE;
- buf[15] = 0;
-
- /* flush fifos */
- buf[16] = DIGI_CMD_IFLUSH_FIFO;
- buf[17] = priv->dp_port_num;
- buf[18] = DIGI_FLUSH_TX | DIGI_FLUSH_RX;
- buf[19] = 0;
-
- ret = digi_write_oob_command(port, buf, 20, 0);
- if (ret != 0)
- dev_dbg(&port->dev, "digi_close: write oob failed, ret=%d\n", ret);
-
- /* wait for final commands on oob port to complete */
- prepare_to_wait(&priv->dp_flush_wait, &wait,
- TASK_INTERRUPTIBLE);
- schedule_timeout(DIGI_CLOSE_TIMEOUT);
- finish_wait(&priv->dp_flush_wait, &wait);
-
- /* shutdown any outstanding bulk writes */
- usb_kill_urb(port->write_urb);
- }
+ /* FIXME: Transmit idle belongs in the wait_unti_sent path */
+ digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT);
+
+ /* disable input flow control */
+ buf[0] = DIGI_CMD_SET_INPUT_FLOW_CONTROL;
+ buf[1] = priv->dp_port_num;
+ buf[2] = DIGI_DISABLE;
+ buf[3] = 0;
+
+ /* disable output flow control */
+ buf[4] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL;
+ buf[5] = priv->dp_port_num;
+ buf[6] = DIGI_DISABLE;
+ buf[7] = 0;
+
+ /* disable reading modem signals automatically */
+ buf[8] = DIGI_CMD_READ_INPUT_SIGNALS;
+ buf[9] = priv->dp_port_num;
+ buf[10] = DIGI_DISABLE;
+ buf[11] = 0;
+
+ /* disable receive */
+ buf[12] = DIGI_CMD_RECEIVE_ENABLE;
+ buf[13] = priv->dp_port_num;
+ buf[14] = DIGI_DISABLE;
+ buf[15] = 0;
+
+ /* flush fifos */
+ buf[16] = DIGI_CMD_IFLUSH_FIFO;
+ buf[17] = priv->dp_port_num;
+ buf[18] = DIGI_FLUSH_TX | DIGI_FLUSH_RX;
+ buf[19] = 0;
+
+ ret = digi_write_oob_command(port, buf, 20, 0);
+ if (ret != 0)
+ dev_dbg(&port->dev, "digi_close: write oob failed, ret=%d\n",
+ ret);
+ /* wait for final commands on oob port to complete */
+ prepare_to_wait(&priv->dp_flush_wait, &wait,
+ TASK_INTERRUPTIBLE);
+ schedule_timeout(DIGI_CLOSE_TIMEOUT);
+ finish_wait(&priv->dp_flush_wait, &wait);
+
+ /* shutdown any outstanding bulk writes */
+ usb_kill_urb(port->write_urb);
exit:
spin_lock_irq(&priv->dp_port_lock);
priv->dp_write_urb_in_use = 0;
spin_lock_init(&priv->dp_port_lock);
priv->dp_port_num = port_num;
- init_waitqueue_head(&priv->dp_modem_change_wait);
init_waitqueue_head(&priv->dp_transmit_idle_wait);
init_waitqueue_head(&priv->dp_flush_wait);
init_waitqueue_head(&priv->dp_close_wait);
else
priv->dp_modem_signals &= ~TIOCM_CD;
- wake_up_interruptible(&priv->dp_modem_change_wait);
spin_unlock(&priv->dp_port_lock);
} else if (opcode == DIGI_CMD_TRANSMIT_IDLE) {
spin_lock(&priv->dp_port_lock);
line_status = priv->line_status;
priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
spin_unlock_irqrestore(&priv->lock, flags);
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
if (!urb->actual_length)
return;
return 0;
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
+static int f81232_tiocmiwait(struct tty_struct *tty, unsigned long arg)
{
+ struct usb_serial_port *port = tty->driver_data;
struct f81232_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
unsigned int prevstatus;
spin_unlock_irqrestore(&priv->lock, flags);
while (1) {
- interruptible_sleep_on(&port->delta_msr_wait);
+ interruptible_sleep_on(&port->port.delta_msr_wait);
/* see if a signal did it */
if (signal_pending(current))
return -ERESTARTSYS;
return -EFAULT;
return 0;
-
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,
- port->number);
- return wait_modem_info(port, arg);
default:
dev_dbg(&port->dev, "%s not supported = 0x%04x\n",
__func__, cmd);
.set_termios = f81232_set_termios,
.tiocmget = f81232_tiocmget,
.tiocmset = f81232_tiocmset,
+ .tiocmiwait = f81232_tiocmiwait,
.process_read_urb = f81232_process_read_urb,
.read_int_callback = f81232_read_int_callback,
.port_probe = f81232_port_probe,
/*
* USB FTDI SIO driver
*
- * Copyright (C) 2009 - 2010
+ * Copyright (C) 2009 - 2013
* Johan Hovold (jhovold@gmail.com)
* Copyright (C) 1999 - 2001
* Greg Kroah-Hartman (greg@kroah.com)
static __u16 product;
struct ftdi_private {
- struct kref kref;
enum ftdi_chip_type chip_type;
/* type of device, either SIO or FT8U232AM */
int baud_base; /* baud base clock for divisor setting */
*/
int flags; /* some ASYNC_xxxx flags are supported */
unsigned long last_dtr_rts; /* saved modem control outputs */
- struct async_icount icount;
char prev_status; /* Used for TIOCMIWAIT */
char transmit_empty; /* If transmitter is empty or not */
__u16 interface; /* FT2232C, FT2232H or FT4232H port interface
static int ftdi_sio_port_probe(struct usb_serial_port *port);
static int ftdi_sio_port_remove(struct usb_serial_port *port);
static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port);
-static void ftdi_close(struct usb_serial_port *port);
static void ftdi_dtr_rts(struct usb_serial_port *port, int on);
static void ftdi_process_read_urb(struct urb *urb);
static int ftdi_prepare_write_buffer(struct usb_serial_port *port,
static int ftdi_tiocmget(struct tty_struct *tty);
static int ftdi_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
-static int ftdi_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount);
static int ftdi_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg);
static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
.port_probe = ftdi_sio_port_probe,
.port_remove = ftdi_sio_port_remove,
.open = ftdi_open,
- .close = ftdi_close,
.dtr_rts = ftdi_dtr_rts,
.throttle = usb_serial_generic_throttle,
.unthrottle = usb_serial_generic_unthrottle,
.prepare_write_buffer = ftdi_prepare_write_buffer,
.tiocmget = ftdi_tiocmget,
.tiocmset = ftdi_tiocmset,
- .get_icount = ftdi_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.ioctl = ftdi_ioctl,
.set_termios = ftdi_set_termios,
.break_ctl = ftdi_break_ctl,
return -ENOMEM;
}
- kref_init(&priv->kref);
mutex_init(&priv->cfg_lock);
priv->flags = ASYNC_LOW_LATENCY;
return 0;
}
-static void ftdi_sio_priv_release(struct kref *k)
-{
- struct ftdi_private *priv = container_of(k, struct ftdi_private, kref);
-
- kfree(priv);
-}
-
static int ftdi_sio_port_remove(struct usb_serial_port *port)
{
struct ftdi_private *priv = usb_get_serial_port_data(port);
- wake_up_interruptible(&port->delta_msr_wait);
-
remove_sysfs_attrs(port);
- kref_put(&priv->kref, ftdi_sio_priv_release);
+ kfree(priv);
return 0;
}
struct ktermios dummy;
struct usb_device *dev = port->serial->dev;
struct ftdi_private *priv = usb_get_serial_port_data(port);
- int result;
/* No error checking for this (will get errors later anyway) */
/* See ftdi_sio.h for description of what is reset */
ftdi_set_termios(tty, port, &dummy);
}
- /* Start reading from the device */
- result = usb_serial_generic_open(tty, port);
- if (!result)
- kref_get(&priv->kref);
-
- return result;
+ return usb_serial_generic_open(tty, port);
}
static void ftdi_dtr_rts(struct usb_serial_port *port, int on)
clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
}
-/*
- * usbserial:__serial_close only calls ftdi_close if the point is open
- *
- * This only gets called when it is the last close
- */
-static void ftdi_close(struct usb_serial_port *port)
-{
- struct ftdi_private *priv = usb_get_serial_port_data(port);
-
- usb_serial_generic_close(port);
- kref_put(&priv->kref, ftdi_sio_priv_release);
-}
-
/* The SIO requires the first byte to have:
* B0 1
* B1 0
c = kfifo_out(&port->write_fifo, &buffer[i + 1], len);
if (!c)
break;
- priv->icount.tx += c;
+ port->icount.tx += c;
buffer[i] = (c << 2) + 1;
count += c + 1;
}
} else {
count = kfifo_out_locked(&port->write_fifo, dest, size,
&port->lock);
- priv->icount.tx += count;
+ port->icount.tx += count;
}
return count;
char diff_status = status ^ priv->prev_status;
if (diff_status & FTDI_RS0_CTS)
- priv->icount.cts++;
+ port->icount.cts++;
if (diff_status & FTDI_RS0_DSR)
- priv->icount.dsr++;
+ port->icount.dsr++;
if (diff_status & FTDI_RS0_RI)
- priv->icount.rng++;
+ port->icount.rng++;
if (diff_status & FTDI_RS0_RLSD)
- priv->icount.dcd++;
+ port->icount.dcd++;
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
priv->prev_status = status;
}
* over framing errors */
if (packet[1] & FTDI_RS_BI) {
flag = TTY_BREAK;
- priv->icount.brk++;
+ port->icount.brk++;
usb_serial_handle_break(port);
} else if (packet[1] & FTDI_RS_PE) {
flag = TTY_PARITY;
- priv->icount.parity++;
+ port->icount.parity++;
} else if (packet[1] & FTDI_RS_FE) {
flag = TTY_FRAME;
- priv->icount.frame++;
+ port->icount.frame++;
}
/* Overrun is special, not associated with a char */
if (packet[1] & FTDI_RS_OE) {
- priv->icount.overrun++;
+ port->icount.overrun++;
tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
}
}
len -= 2;
if (!len)
return 0; /* status only */
- priv->icount.rx += len;
+ port->icount.rx += len;
ch = packet + 2;
if (port->port.console && port->sysrq) {
return update_mctrl(port, set, clear);
}
-static int ftdi_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct ftdi_private *priv = usb_get_serial_port_data(port);
- struct async_icount *ic = &priv->icount;
-
- icount->cts = ic->cts;
- icount->dsr = ic->dsr;
- icount->rng = ic->rng;
- icount->dcd = ic->dcd;
- icount->tx = ic->tx;
- icount->rx = ic->rx;
- icount->frame = ic->frame;
- icount->parity = ic->parity;
- icount->overrun = ic->overrun;
- icount->brk = ic->brk;
- icount->buf_overrun = ic->buf_overrun;
- return 0;
-}
-
static int ftdi_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
- struct ftdi_private *priv = usb_get_serial_port_data(port);
- struct async_icount cnow;
- struct async_icount cprev;
dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd);
case TIOCSSERIAL: /* sets serial port data */
return set_serial_info(tty, port,
(struct serial_struct __user *) arg);
-
- /*
- * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
- * - mask passed in arg for lines of interest
- * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
- * Caller should use TIOCGICOUNT to see which one it was.
- *
- * This code is borrowed from linux/drivers/char/serial.c
- */
- case TIOCMIWAIT:
- cprev = priv->icount;
- for (;;) {
- interruptible_sleep_on(&port->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- cnow = priv->icount;
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
- return 0;
- }
- cprev = cnow;
- }
case TIOCSERGETLSR:
return get_lsr_info(port, (struct serial_struct __user *)arg);
break;
static void garmin_close(struct usb_serial_port *port)
{
- struct usb_serial *serial = port->serial;
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
dev_dbg(&port->dev, "%s - port %d - mode=%d state=%d flags=0x%X\n",
__func__, port->number, garmin_data_p->mode,
garmin_data_p->state, garmin_data_p->flags);
- if (!serial)
- return;
-
garmin_clear(garmin_data_p);
/* shutdown our urbs */
{
unsigned long flags;
struct usb_serial_port *port = urb->context;
- struct usb_serial *serial = port->serial;
struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
int retval;
- if (!serial) {
- dev_dbg(&urb->dev->dev, "%s - bad serial pointer, exiting\n", __func__);
- return;
- }
-
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n",
__func__, status);
/*
* USB Serial Converter Generic functions
*
- * Copyright (C) 2010 - 2011 Johan Hovold (jhovold@gmail.com)
+ * Copyright (C) 2010 - 2013 Johan Hovold (jhovold@gmail.com)
* Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com)
*
* This program is free software; you can redistribute it and/or
},
.id_table = generic_device_ids,
.num_ports = 1,
- .disconnect = usb_serial_generic_disconnect,
- .release = usb_serial_generic_release,
.throttle = usb_serial_generic_throttle,
.unthrottle = usb_serial_generic_unthrottle,
.resume = usb_serial_generic_resume,
}
EXPORT_SYMBOL_GPL(usb_serial_generic_open);
-static void generic_cleanup(struct usb_serial_port *port)
+void usb_serial_generic_close(struct usb_serial_port *port)
{
- struct usb_serial *serial = port->serial;
unsigned long flags;
int i;
- if (serial->dev) {
- /* shutdown any bulk transfers that might be going on */
- if (port->bulk_out_size) {
- for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
- usb_kill_urb(port->write_urbs[i]);
+ if (port->bulk_out_size) {
+ for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
+ usb_kill_urb(port->write_urbs[i]);
- spin_lock_irqsave(&port->lock, flags);
- kfifo_reset_out(&port->write_fifo);
- spin_unlock_irqrestore(&port->lock, flags);
- }
- if (port->bulk_in_size) {
- for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
- usb_kill_urb(port->read_urbs[i]);
- }
+ spin_lock_irqsave(&port->lock, flags);
+ kfifo_reset_out(&port->write_fifo);
+ spin_unlock_irqrestore(&port->lock, flags);
+ }
+ if (port->bulk_in_size) {
+ for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
+ usb_kill_urb(port->read_urbs[i]);
}
-}
-
-void usb_serial_generic_close(struct usb_serial_port *port)
-{
- generic_cleanup(port);
}
EXPORT_SYMBOL_GPL(usb_serial_generic_close);
if (!test_and_clear_bit(index, &port->read_urbs_free))
return 0;
- dev_dbg(&port->dev, "%s - port %d, urb %d\n", __func__,
- port->number, index);
+ dev_dbg(&port->dev, "%s - urb %d\n", __func__, index);
res = usb_submit_urb(port->read_urbs[index], mem_flags);
if (res) {
}
set_bit(i, &port->read_urbs_free);
- dev_dbg(&port->dev, "%s - port %d, urb %d, len %d\n",
- __func__, port->number, i, urb->actual_length);
+ dev_dbg(&port->dev, "%s - urb %d, len %d\n", __func__, i,
+ urb->actual_length);
if (urb->status) {
dev_dbg(&port->dev, "%s - non-zero urb status: %d\n",
}
EXPORT_SYMBOL_GPL(usb_serial_generic_unthrottle);
+static bool usb_serial_generic_msr_changed(struct tty_struct *tty,
+ unsigned long arg, struct async_icount *cprev)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct async_icount cnow;
+ unsigned long flags;
+ bool ret;
+
+ /*
+ * Use tty-port initialised flag to detect all hangups including the
+ * one generated at USB-device disconnect.
+ *
+ * FIXME: Remove hupping check once tty_port_hangup calls shutdown
+ * (which clears the initialised flag) before wake up.
+ */
+ if (test_bit(TTY_HUPPING, &tty->flags))
+ return true;
+ if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags))
+ return true;
+
+ spin_lock_irqsave(&port->lock, flags);
+ cnow = port->icount; /* atomic copy*/
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) ||
+ ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) ||
+ ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) ||
+ ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts));
+
+ *cprev = cnow;
+
+ return ret;
+}
+
+int usb_serial_generic_tiocmiwait(struct tty_struct *tty, unsigned long arg)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct async_icount cnow;
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&port->lock, flags);
+ cnow = port->icount; /* atomic copy */
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ ret = wait_event_interruptible(port->port.delta_msr_wait,
+ usb_serial_generic_msr_changed(tty, arg, &cnow));
+ if (!ret) {
+ if (test_bit(TTY_HUPPING, &tty->flags))
+ ret = -EIO;
+ if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags))
+ ret = -EIO;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(usb_serial_generic_tiocmiwait);
+
+int usb_serial_generic_get_icount(struct tty_struct *tty,
+ struct serial_icounter_struct *icount)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct async_icount cnow;
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ cnow = port->icount; /* atomic copy */
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ icount->cts = cnow.cts;
+ icount->dsr = cnow.dsr;
+ icount->rng = cnow.rng;
+ icount->dcd = cnow.dcd;
+ icount->tx = cnow.tx;
+ icount->rx = cnow.rx;
+ icount->frame = cnow.frame;
+ icount->parity = cnow.parity;
+ icount->overrun = cnow.overrun;
+ icount->brk = cnow.brk;
+ icount->buf_overrun = cnow.buf_overrun;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(usb_serial_generic_get_icount);
+
#ifdef CONFIG_MAGIC_SYSRQ
int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch)
{
{
struct tty_port *port = &usb_port->port;
- dev_dbg(&usb_port->dev, "%s - port %d, status %d\n", __func__,
- usb_port->number, status);
+ dev_dbg(&usb_port->dev, "%s - status %d\n", __func__, status);
if (status)
wake_up_interruptible(&port->open_wait);
return c ? -EIO : 0;
}
EXPORT_SYMBOL_GPL(usb_serial_generic_resume);
-
-void usb_serial_generic_disconnect(struct usb_serial *serial)
-{
- int i;
-
- /* stop reads and writes on all ports */
- for (i = 0; i < serial->num_ports; ++i)
- generic_cleanup(serial->port[i]);
-}
-EXPORT_SYMBOL_GPL(usb_serial_generic_disconnect);
-
-void usb_serial_generic_release(struct usb_serial *serial)
-{
-}
wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
- struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner of this object */
};
static int edge_tiocmget(struct tty_struct *tty);
static int edge_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
-static int edge_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount);
static int edge_startup(struct usb_serial *serial);
static void edge_disconnect(struct usb_serial *serial);
static void edge_release(struct usb_serial *serial);
init_waitqueue_head(&edge_port->wait_chase);
init_waitqueue_head(&edge_port->wait_command);
- /* initialize our icount structure */
- memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
-
/* initialize our port settings */
edge_port->txCredits = 0; /* Can't send any data yet */
/* Must always set this bit to enable ints! */
/* decrement the number of credits we have by the number we just sent */
edge_port->txCredits -= count;
- edge_port->icount.tx += count;
+ edge_port->port->icount.tx += count;
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status) {
/* revert the credits as something bad happened. */
edge_port->txCredits += count;
- edge_port->icount.tx -= count;
+ edge_port->port->icount.tx -= count;
}
dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n",
__func__, count, edge_port->txCredits, fifo->count);
return result;
}
-static int edge_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct async_icount cnow;
- cnow = edge_port->icount;
-
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
-
- dev_dbg(&port->dev, "%s (%d) TIOCGICOUNT RX=%d, TX=%d\n", __func__,
- port->number, icount->rx, icount->tx);
- return 0;
-}
-
static int get_serial_info(struct edgeport_port *edge_port,
struct serial_struct __user *retinfo)
{
struct usb_serial_port *port = tty->driver_data;
DEFINE_WAIT(wait);
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct async_icount cnow;
- struct async_icount cprev;
dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
case TIOCGSERIAL:
dev_dbg(&port->dev, "%s (%d) TIOCGSERIAL\n", __func__, port->number);
return get_serial_info(edge_port, (struct serial_struct __user *) arg);
-
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number);
- cprev = edge_port->icount;
- while (1) {
- prepare_to_wait(&port->delta_msr_wait,
- &wait, TASK_INTERRUPTIBLE);
- schedule();
- finish_wait(&port->delta_msr_wait, &wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- cnow = edge_port->icount;
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
- return 0;
- }
- cprev = cnow;
- }
- /* NOTREACHED */
- break;
-
}
return -ENOIOCTLCMD;
}
edge_serial->rxPort);
edge_tty_recv(edge_port->port, buffer,
rxLen);
- edge_port->icount.rx += rxLen;
+ edge_port->port->icount.rx += rxLen;
}
buffer += rxLen;
}
if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
- icount = &edge_port->icount;
+ icount = &edge_port->port->icount;
/* update input line counters */
if (newMsr & EDGEPORT_MSR_DELTA_CTS)
icount->dcd++;
if (newMsr & EDGEPORT_MSR_DELTA_RI)
icount->rng++;
- wake_up_interruptible(&edge_port->port->delta_msr_wait);
+ wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
}
/* Save the new modem status */
edge_tty_recv(edge_port->port, &data, 1);
/* update input line counters */
- icount = &edge_port->icount;
+ icount = &edge_port->port->icount;
if (newLsr & LSR_BREAK)
icount->brk++;
if (newLsr & LSR_OVER_ERR)
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
- .get_icount = edge_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
- .get_icount = edge_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
- .get_icount = edge_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
- .get_icount = edge_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
int baud_rate;
int close_pending;
int lsr_event;
- struct async_icount icount;
+
struct edgeport_serial *edge_serial;
struct usb_serial_port *port;
__u8 bUartMode; /* Port type, 0: RS232, etc. */
if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
- icount = &edge_port->icount;
+ icount = &edge_port->port->icount;
/* update input line counters */
if (msr & EDGEPORT_MSR_DELTA_CTS)
icount->dcd++;
if (msr & EDGEPORT_MSR_DELTA_RI)
icount->rng++;
- wake_up_interruptible(&edge_port->port->delta_msr_wait);
+ wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
}
/* Save the new modem status */
edge_tty_recv(edge_port->port, &data, 1);
/* update input line counters */
- icount = &edge_port->icount;
+ icount = &edge_port->port->icount;
if (new_lsr & LSR_BREAK)
icount->brk++;
if (new_lsr & LSR_OVER_ERR)
else
edge_tty_recv(edge_port->port, data,
urb->actual_length);
- edge_port->icount.rx += urb->actual_length;
+ edge_port->port->icount.rx += urb->actual_length;
}
exit:
dev = port->serial->dev;
- memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
-
/* turn off loopback */
status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
if (status) {
kfifo_reset_out(&edge_port->write_fifo);
spin_unlock_irqrestore(&edge_port->ep_lock, flags);
- /* assuming we can still talk to the device,
- * send a close port command to it */
dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
port_number = port->number - port->serial->minor;
-
- mutex_lock(&serial->disc_mutex);
- if (!serial->disconnected) {
- send_cmd(serial->dev,
- UMPC_CLOSE_PORT,
- (__u8)(UMPM_UART1_PORT + port_number),
- 0,
- NULL,
- 0);
- }
- mutex_unlock(&serial->disc_mutex);
+ send_cmd(serial->dev, UMPC_CLOSE_PORT,
+ (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
mutex_lock(&edge_serial->es_lock);
--edge_port->edge_serial->num_ports_open;
edge_port->ep_write_urb_in_use = 0;
/* TODO: reschedule edge_send */
} else
- edge_port->icount.tx += count;
+ edge_port->port->icount.tx += count;
/* wakeup any process waiting for writes to complete */
/* there is now more room in the buffer for new writes */
return result;
}
-static int edge_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct async_icount *ic = &edge_port->icount;
-
- icount->cts = ic->cts;
- icount->dsr = ic->dsr;
- icount->rng = ic->rng;
- icount->dcd = ic->dcd;
- icount->tx = ic->tx;
- icount->rx = ic->rx;
- icount->frame = ic->frame;
- icount->parity = ic->parity;
- icount->overrun = ic->overrun;
- icount->brk = ic->brk;
- icount->buf_overrun = ic->buf_overrun;
- return 0;
-}
-
static int get_serial_info(struct edgeport_port *edge_port,
struct serial_struct __user *retinfo)
{
{
struct usb_serial_port *port = tty->driver_data;
struct edgeport_port *edge_port = usb_get_serial_port_data(port);
- struct async_icount cnow;
- struct async_icount cprev;
dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
return get_serial_info(edge_port,
(struct serial_struct __user *) arg);
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
- cprev = edge_port->icount;
- while (1) {
- interruptible_sleep_on(&port->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- cnow = edge_port->icount;
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
- return 0;
- }
- cprev = cnow;
- }
- /* not reached */
- break;
}
return -ENOIOCTLCMD;
}
struct edgeport_port *edge_port;
edge_port = usb_get_serial_port_data(port);
-
edge_remove_sysfs_attrs(port);
kfifo_free(&edge_port->write_fifo);
kfree(edge_port);
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
- .get_icount = edge_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
.set_termios = edge_set_termios,
.tiocmget = edge_tiocmget,
.tiocmset = edge_tiocmset,
- .get_icount = edge_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.write = edge_write,
.write_room = edge_write_room,
.chars_in_buffer = edge_chars_in_buffer,
struct iuu_private {
spinlock_t lock; /* store irq state */
- wait_queue_head_t delta_msr_wait;
u8 line_status;
int tiostatus; /* store IUART SIGNAL for tiocmget call */
u8 reset; /* if 1 reset is needed */
priv->vcc = vcc_default;
spin_lock_init(&priv->lock);
- init_waitqueue_head(&priv->delta_msr_wait);
usb_set_serial_port_data(port, priv);
static void iuu_close(struct usb_serial_port *port)
{
/* iuu_led (port,255,0,0,0); */
- struct usb_serial *serial;
-
- serial = port->serial;
- if (!serial)
- return;
iuu_uart_off(port);
- if (serial->dev) {
- /* free writebuf */
- /* shutdown our urbs */
- dev_dbg(&port->dev, "%s - shutting down urbs\n", __func__);
- usb_kill_urb(port->write_urb);
- usb_kill_urb(port->read_urb);
- usb_kill_urb(port->interrupt_in_urb);
- iuu_led(port, 0, 0, 0xF000, 0xFF);
- }
+
+ usb_kill_urb(port->write_urb);
+ usb_kill_urb(port->read_urb);
+
+ iuu_led(port, 0, 0, 0xF000, 0xFF);
}
static void iuu_init_termios(struct tty_struct *tty)
static void keyspan_close(struct usb_serial_port *port)
{
int i;
- struct usb_serial *serial = port->serial;
struct keyspan_port_private *p_priv;
p_priv = usb_get_serial_port_data(port);
p_priv->rts_state = 0;
p_priv->dtr_state = 0;
- if (serial->dev) {
- keyspan_send_setup(port, 2);
- /* pilot-xfer seems to work best with this delay */
- mdelay(100);
- /* keyspan_set_termios(port, NULL); */
- }
-
- /*while (p_priv->outcont_urb->status == -EINPROGRESS) {
- dev_dbg(&port->dev, "%s - urb in progress\n", __func__);
- }*/
+ keyspan_send_setup(port, 2);
+ /* pilot-xfer seems to work best with this delay */
+ mdelay(100);
p_priv->out_flip = 0;
p_priv->in_flip = 0;
- if (serial->dev) {
- /* Stop reading/writing urbs */
- stop_urb(p_priv->inack_urb);
- /* stop_urb(p_priv->outcont_urb); */
- for (i = 0; i < 2; i++) {
- stop_urb(p_priv->in_urbs[i]);
- stop_urb(p_priv->out_urbs[i]);
- }
+ stop_urb(p_priv->inack_urb);
+ for (i = 0; i < 2; i++) {
+ stop_urb(p_priv->in_urbs[i]);
+ stop_urb(p_priv->out_urbs[i]);
}
}
{
struct usb_serial *serial = port->serial;
- if (serial->dev) {
- if (on)
- keyspan_pda_set_modem_info(serial, (1<<7) | (1<< 2));
- else
- keyspan_pda_set_modem_info(serial, 0);
- }
+ if (on)
+ keyspan_pda_set_modem_info(serial, (1 << 7) | (1 << 2));
+ else
+ keyspan_pda_set_modem_info(serial, 0);
}
}
static void keyspan_pda_close(struct usb_serial_port *port)
{
- struct usb_serial *serial = port->serial;
-
- if (serial->dev) {
- /* shutdown our bulk reads and writes */
- usb_kill_urb(port->write_urb);
- usb_kill_urb(port->interrupt_in_urb);
- }
+ usb_kill_urb(port->write_urb);
+ usb_kill_urb(port->interrupt_in_urb);
}
{
int rc;
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected) {
- /* send READ_OFF */
- rc = usb_control_msg(port->serial->dev,
- usb_sndctrlpipe(port->serial->dev, 0),
- KL5KUSB105A_SIO_CONFIGURE,
- USB_TYPE_VENDOR | USB_DIR_OUT,
- KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
- 0, /* index */
- NULL, 0,
- KLSI_TIMEOUT);
- if (rc < 0)
- dev_err(&port->dev,
- "Disabling read failed (error = %d)\n", rc);
- }
- mutex_unlock(&port->serial->disc_mutex);
+ /* send READ_OFF */
+ rc = usb_control_msg(port->serial->dev,
+ usb_sndctrlpipe(port->serial->dev, 0),
+ KL5KUSB105A_SIO_CONFIGURE,
+ USB_TYPE_VENDOR | USB_DIR_OUT,
+ KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
+ 0, /* index */
+ NULL, 0,
+ KLSI_TIMEOUT);
+ if (rc < 0)
+ dev_err(&port->dev, "failed to disable read: %d\n", rc);
/* shutdown our bulk reads and writes */
usb_serial_generic_close(port);
-
- /* wgg - do I need this? I think so. */
- usb_kill_urb(port->interrupt_in_urb);
}
/* We need to write a complete 64-byte data block and encode the
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/serial.h>
-#include <linux/ioctl.h>
#include "mct_u232.h"
#define DRIVER_AUTHOR "Wolfgang Grandegger <wolfgang@ces.ch>"
static int mct_u232_tiocmget(struct tty_struct *tty);
static int mct_u232_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
-static int mct_u232_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg);
-static int mct_u232_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount);
static void mct_u232_throttle(struct tty_struct *tty);
static void mct_u232_unthrottle(struct tty_struct *tty);
.break_ctl = mct_u232_break_ctl,
.tiocmget = mct_u232_tiocmget,
.tiocmset = mct_u232_tiocmset,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
.attach = mct_u232_startup,
.port_probe = mct_u232_port_probe,
.port_remove = mct_u232_port_remove,
- .ioctl = mct_u232_ioctl,
- .get_icount = mct_u232_get_icount,
+ .get_icount = usb_serial_generic_get_icount,
};
static struct usb_serial_driver * const serial_drivers[] = {
unsigned char last_lsr; /* Line Status Register */
unsigned char last_msr; /* Modem Status Register */
unsigned int rx_flags; /* Throttling flags */
- struct async_icount icount;
};
#define THROTTLED 0x01
/* Record Control Line states */
mct_u232_msr_to_state(port, &priv->control_state, priv->last_msr);
- mct_u232_msr_to_icount(&priv->icount, priv->last_msr);
+ mct_u232_msr_to_icount(&port->icount, priv->last_msr);
#if 0
/* Not yet handled. See belkin_sa.c for further information */
tty_kref_put(tty);
}
#endif
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
spin_unlock_irqrestore(&priv->lock, flags);
exit:
retval = usb_submit_urb(urb, GFP_ATOMIC);
}
}
-static int mct_u232_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- DEFINE_WAIT(wait);
- struct usb_serial_port *port = tty->driver_data;
- struct mct_u232_private *mct_u232_port = usb_get_serial_port_data(port);
- struct async_icount cnow, cprev;
- unsigned long flags;
-
- dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd);
-
- switch (cmd) {
-
- case TIOCMIWAIT:
-
- dev_dbg(&port->dev, "%s TIOCMIWAIT", __func__);
-
- spin_lock_irqsave(&mct_u232_port->lock, flags);
- cprev = mct_u232_port->icount;
- spin_unlock_irqrestore(&mct_u232_port->lock, flags);
- for ( ; ; ) {
- prepare_to_wait(&port->delta_msr_wait,
- &wait, TASK_INTERRUPTIBLE);
- schedule();
- finish_wait(&port->delta_msr_wait, &wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- spin_lock_irqsave(&mct_u232_port->lock, flags);
- cnow = mct_u232_port->icount;
- spin_unlock_irqrestore(&mct_u232_port->lock, flags);
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
- return 0;
- }
- cprev = cnow;
- }
-
- }
- return -ENOIOCTLCMD;
-}
-
-static int mct_u232_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct mct_u232_private *mct_u232_port = usb_get_serial_port_data(port);
- struct async_icount *ic = &mct_u232_port->icount;
- unsigned long flags;
-
- spin_lock_irqsave(&mct_u232_port->lock, flags);
-
- icount->cts = ic->cts;
- icount->dsr = ic->dsr;
- icount->rng = ic->rng;
- icount->dcd = ic->dcd;
- icount->rx = ic->rx;
- icount->tx = ic->tx;
- icount->frame = ic->frame;
- icount->overrun = ic->overrun;
- icount->parity = ic->parity;
- icount->brk = ic->brk;
- icount->buf_overrun = ic->buf_overrun;
-
- spin_unlock_irqrestore(&mct_u232_port->lock, flags);
-
- dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n",
- __func__, icount->rx, icount->tx);
- return 0;
-}
-
module_usb_serial_driver(serial_drivers, id_table);
MODULE_AUTHOR(DRIVER_AUTHOR);
usb_unlink_urb(port->interrupt_in_urb);
usb_kill_urb(port->interrupt_in_urb);
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected)
- metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port);
- mutex_unlock(&port->serial->disc_mutex);
+ metrousb_send_unidirectional_cmd(UNI_CMD_CLOSE, port);
}
static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port)
__u8 shadowMCR; /* last MCR value received */
__u8 shadowMSR; /* last MSR value received */
char open;
- struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner */
struct urb *write_urb_pool[NUM_URBS];
};
dev_err(&port->dev, "%s - Error %d submitting read urb\n",
__func__, response);
- /* initialize our icount structure */
- memset(&(mos7720_port->icount), 0x00, sizeof(mos7720_port->icount));
-
/* initialize our port settings */
mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */
usb_kill_urb(port->write_urb);
usb_kill_urb(port->read_urb);
- mutex_lock(&serial->disc_mutex);
- /* these commands must not be issued if the device has
- * been disconnected */
- if (!serial->disconnected) {
- write_mos_reg(serial, port->number - port->serial->minor,
- MCR, 0x00);
- write_mos_reg(serial, port->number - port->serial->minor,
- IER, 0x00);
- }
- mutex_unlock(&serial->disc_mutex);
+ write_mos_reg(serial, port->number - port->serial->minor, MCR, 0x00);
+ write_mos_reg(serial, port->number - port->serial->minor, IER, 0x00);
+
mos7720_port->open = 0;
}
return 0;
}
-static int mos7720_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct moschip_port *mos7720_port;
- struct async_icount cnow;
-
- mos7720_port = usb_get_serial_port_data(port);
- cnow = mos7720_port->icount;
-
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
-
- dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n", __func__,
- icount->rx, icount->tx);
- return 0;
-}
-
static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd,
unsigned int __user *value)
{
{
struct usb_serial_port *port = tty->driver_data;
struct moschip_port *mos7720_port;
- struct async_icount cnow;
- struct async_icount cprev;
mos7720_port = usb_get_serial_port_data(port);
if (mos7720_port == NULL)
dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
return get_serial_info(mos7720_port,
(struct serial_struct __user *)arg);
-
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__);
- cprev = mos7720_port->icount;
- while (1) {
- if (signal_pending(current))
- return -ERESTARTSYS;
- cnow = mos7720_port->icount;
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
- return 0;
- }
- cprev = cnow;
- }
- /* NOTREACHED */
- break;
}
return -ENOIOCTLCMD;
.ioctl = mos7720_ioctl,
.tiocmget = mos7720_tiocmget,
.tiocmset = mos7720_tiocmset,
- .get_icount = mos7720_get_icount,
.set_termios = mos7720_set_termios,
.write = mos7720_write,
.write_room = mos7720_write_room,
char open;
char open_ports;
wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
- int delta_msr_cond;
- struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner of this object */
/* Offsets */
struct moschip_port *mos7840_port;
struct async_icount *icount;
mos7840_port = port;
- icount = &mos7840_port->icount;
if (new_msr &
(MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI |
MOS_MSR_DELTA_CD)) {
- icount = &mos7840_port->icount;
+ icount = &mos7840_port->port->icount;
/* update input line counters */
- if (new_msr & MOS_MSR_DELTA_CTS) {
+ if (new_msr & MOS_MSR_DELTA_CTS)
icount->cts++;
- smp_wmb();
- }
- if (new_msr & MOS_MSR_DELTA_DSR) {
+ if (new_msr & MOS_MSR_DELTA_DSR)
icount->dsr++;
- smp_wmb();
- }
- if (new_msr & MOS_MSR_DELTA_CD) {
+ if (new_msr & MOS_MSR_DELTA_CD)
icount->dcd++;
- smp_wmb();
- }
- if (new_msr & MOS_MSR_DELTA_RI) {
+ if (new_msr & MOS_MSR_DELTA_RI)
icount->rng++;
- smp_wmb();
- }
- mos7840_port->delta_msr_cond = 1;
- wake_up_interruptible(&port->port->delta_msr_wait);
+ wake_up_interruptible(&port->port->port.delta_msr_wait);
}
}
}
/* update input line counters */
- icount = &port->icount;
- if (new_lsr & SERIAL_LSR_BI) {
+ icount = &port->port->icount;
+ if (new_lsr & SERIAL_LSR_BI)
icount->brk++;
- smp_wmb();
- }
- if (new_lsr & SERIAL_LSR_OE) {
+ if (new_lsr & SERIAL_LSR_OE)
icount->overrun++;
- smp_wmb();
- }
- if (new_lsr & SERIAL_LSR_PE) {
+ if (new_lsr & SERIAL_LSR_PE)
icount->parity++;
- smp_wmb();
- }
- if (new_lsr & SERIAL_LSR_FE) {
+ if (new_lsr & SERIAL_LSR_FE)
icount->frame++;
- smp_wmb();
- }
}
/************************************************************************/
struct tty_port *tport = &mos7840_port->port->port;
tty_insert_flip_string(tport, data, urb->actual_length);
tty_flip_buffer_push(tport);
- mos7840_port->icount.rx += urb->actual_length;
- smp_wmb();
- dev_dbg(&port->dev, "mos7840_port->icount.rx is %d:\n", mos7840_port->icount.rx);
+ port->icount.rx += urb->actual_length;
+ dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx);
}
if (!mos7840_port->read_urb) {
/* initialize our wait queues */
init_waitqueue_head(&mos7840_port->wait_chase);
- /* initialize our icount structure */
- memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount));
-
/* initialize our port settings */
/* Must set to enable ints! */
mos7840_port->shadowMCR = MCR_MASTER_IE;
/* send a open port command */
mos7840_port->open = 1;
/* mos7840_change_port_settings(mos7840_port,old_termios); */
- mos7840_port->icount.tx = 0;
- mos7840_port->icount.rx = 0;
return 0;
}
}
}
- /* While closing port, shutdown all bulk read, write *
- * and interrupt read if they exists */
- if (serial->dev) {
- if (mos7840_port->write_urb) {
- dev_dbg(&port->dev, "%s", "Shutdown bulk write\n");
- usb_kill_urb(mos7840_port->write_urb);
- }
- if (mos7840_port->read_urb) {
- dev_dbg(&port->dev, "%s", "Shutdown bulk read\n");
- usb_kill_urb(mos7840_port->read_urb);
- mos7840_port->read_urb_busy = false;
- }
- if ((&mos7840_port->control_urb)) {
- dev_dbg(&port->dev, "%s", "Shutdown control read\n");
- /*/ usb_kill_urb (mos7840_port->control_urb); */
- }
- }
-/* if(mos7840_port->ctrl_buf != NULL) */
-/* kfree(mos7840_port->ctrl_buf); */
+ usb_kill_urb(mos7840_port->write_urb);
+ usb_kill_urb(mos7840_port->read_urb);
+ mos7840_port->read_urb_busy = false;
+
port0->open_ports--;
dev_dbg(&port->dev, "%s in close%d:in port%d\n", __func__, port0->open_ports, port->number);
if (port0->open_ports == 0) {
if (mos7840_port->write_urb) {
/* if this urb had a transfer buffer already (old tx) free it */
- if (mos7840_port->write_urb->transfer_buffer != NULL)
- kfree(mos7840_port->write_urb->transfer_buffer);
+ kfree(mos7840_port->write_urb->transfer_buffer);
usb_free_urb(mos7840_port->write_urb);
}
if (mos7840_port == NULL)
return;
- if (serial->dev)
- /* flush and block until tx is empty */
- mos7840_block_until_chase_response(tty, mos7840_port);
+ /* flush and block until tx is empty */
+ mos7840_block_until_chase_response(tty, mos7840_port);
if (break_state == -1)
data = mos7840_port->shadowLCR | LCR_SET_BREAK;
goto exit;
}
bytes_sent = transfer_size;
- mos7840_port->icount.tx += transfer_size;
- smp_wmb();
- dev_dbg(&port->dev, "mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx);
+ port->icount.tx += transfer_size;
+ dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx);
exit:
return bytes_sent;
return 0;
}
-static int mos7840_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct moschip_port *mos7840_port;
- struct async_icount cnow;
-
- mos7840_port = mos7840_get_port_private(port);
- cnow = mos7840_port->icount;
-
- smp_rmb();
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
-
- dev_dbg(&port->dev, "%s TIOCGICOUNT RX=%d, TX=%d\n", __func__,
- icount->rx, icount->tx);
- return 0;
-}
-
/*****************************************************************************
* SerialIoctl
* this function handles any ioctl calls to the driver
void __user *argp = (void __user *)arg;
struct moschip_port *mos7840_port;
- struct async_icount cnow;
- struct async_icount cprev;
-
if (mos7840_port_paranoia_check(port, __func__))
return -1;
case TIOCSSERIAL:
dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__);
break;
-
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__);
- cprev = mos7840_port->icount;
- while (1) {
- /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */
- mos7840_port->delta_msr_cond = 0;
- wait_event_interruptible(port->delta_msr_wait,
- (port->serial->disconnected ||
- mos7840_port->
- delta_msr_cond == 1));
-
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- cnow = mos7840_port->icount;
- smp_rmb();
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
- return 0;
- }
- cprev = cnow;
- }
- /* NOTREACHED */
- break;
-
default:
break;
}
.break_ctl = mos7840_break,
.tiocmget = mos7840_tiocmget,
.tiocmset = mos7840_tiocmset,
- .get_icount = mos7840_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.port_probe = mos7840_port_probe,
.port_remove = mos7840_port_remove,
.read_bulk_callback = mos7840_bulk_in_callback,
0, 0, buffer, 1, 0);
kfree(buffer);
- return retval;
+ if (retval < 0)
+ return retval;
+
+ return 0;
}
static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port)
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = port->serial;
struct opticon_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
bool rts;
if (!changed)
return 0;
- /* Send the new RTS state to the connected device */
- mutex_lock(&serial->disc_mutex);
- if (!serial->disconnected)
- ret = send_control_msg(port, CONTROL_RTS, !rts);
- else
- ret = -ENODEV;
- mutex_unlock(&serial->disc_mutex);
+ ret = send_control_msg(port, CONTROL_RTS, !rts);
+ if (ret)
+ return usb_translate_errors(ret);
- return ret;
+ return 0;
}
static int get_serial_info(struct usb_serial_port *port,
static void oti6858_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old);
static void oti6858_init_termios(struct tty_struct *tty);
-static int oti6858_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg);
static void oti6858_read_int_callback(struct urb *urb);
static void oti6858_read_bulk_callback(struct urb *urb);
static void oti6858_write_bulk_callback(struct urb *urb);
static int oti6858_tiocmget(struct tty_struct *tty);
static int oti6858_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear);
+static int oti6858_tiocmiwait(struct tty_struct *tty, unsigned long arg);
static int oti6858_port_probe(struct usb_serial_port *port);
static int oti6858_port_remove(struct usb_serial_port *port);
.open = oti6858_open,
.close = oti6858_close,
.write = oti6858_write,
- .ioctl = oti6858_ioctl,
.set_termios = oti6858_set_termios,
.init_termios = oti6858_init_termios,
.tiocmget = oti6858_tiocmget,
.tiocmset = oti6858_tiocmset,
+ .tiocmiwait = oti6858_tiocmiwait,
.read_bulk_callback = oti6858_read_bulk_callback,
.read_int_callback = oti6858_read_int_callback,
.write_bulk_callback = oti6858_write_bulk_callback,
return result;
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
+static int oti6858_tiocmiwait(struct tty_struct *tty, unsigned long arg)
{
+ struct usb_serial_port *port = tty->driver_data;
struct oti6858_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
unsigned int prev, status;
spin_unlock_irqrestore(&priv->lock, flags);
while (1) {
- wait_event_interruptible(port->delta_msr_wait,
+ wait_event_interruptible(port->port.delta_msr_wait,
port->serial->disconnected ||
priv->status.pin_state != prev);
if (signal_pending(current))
return 0;
}
-static int oti6858_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- struct usb_serial_port *port = tty->driver_data;
-
- dev_dbg(&port->dev, "%s(cmd = 0x%04x, arg = 0x%08lx)\n", __func__, cmd, arg);
-
- switch (cmd) {
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s(): TIOCMIWAIT\n", __func__);
- return wait_modem_info(port, arg);
- default:
- dev_dbg(&port->dev, "%s(): 0x%04x not supported\n", __func__, cmd);
- break;
- }
- return -ENOIOCTLCMD;
-}
-
static void oti6858_read_int_callback(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
if (!priv->transient) {
if (xs->pin_state != priv->status.pin_state)
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
memcpy(&priv->status, xs, OTI6858_CTRL_PKT_SIZE);
}
int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
value, index, buf, 1, 100);
- dev_dbg(&serial->dev->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n",
+ dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d - %x\n",
VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, value, index,
res, buf[0]);
return res;
int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
value, index, NULL, 0, 100);
- dev_dbg(&serial->dev->dev, "0x%x:0x%x:0x%x:0x%x %d\n",
+ dev_dbg(&serial->interface->dev, "0x%x:0x%x:0x%x:0x%x %d\n",
VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, value, index,
res);
return res;
return 0;
}
-static int set_control_lines(struct usb_device *dev, u8 value)
+static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value)
{
+ struct usb_device *dev = port->serial->dev;
int retval;
retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
value, 0, NULL, 0, 100);
- dev_dbg(&dev->dev, "%s - value = %d, retval = %d\n", __func__,
+ dev_dbg(&port->dev, "%s - value = %d, retval = %d\n", __func__,
value, retval);
return retval;
}
if (control != priv->line_control) {
control = priv->line_control;
spin_unlock_irqrestore(&priv->lock, flags);
- set_control_lines(serial->dev, control);
+ pl2303_set_control_lines(port, control);
} else {
spin_unlock_irqrestore(&priv->lock, flags);
}
priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
control = priv->line_control;
spin_unlock_irqrestore(&priv->lock, flags);
- set_control_lines(port->serial->dev, control);
+ pl2303_set_control_lines(port, control);
}
static void pl2303_close(struct usb_serial_port *port)
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = port->serial;
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
u8 control;
control = priv->line_control;
spin_unlock_irqrestore(&priv->lock, flags);
- mutex_lock(&serial->disc_mutex);
- if (!serial->disconnected)
- ret = set_control_lines(serial->dev, control);
- else
- ret = -ENODEV;
- mutex_unlock(&serial->disc_mutex);
+ ret = pl2303_set_control_lines(port, control);
+ if (ret)
+ return usb_translate_errors(ret);
- return ret;
+ return 0;
}
static int pl2303_tiocmget(struct tty_struct *tty)
return 0;
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
+static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg)
{
+ struct usb_serial_port *port = tty->driver_data;
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
unsigned int prevstatus;
spin_unlock_irqrestore(&priv->lock, flags);
while (1) {
- interruptible_sleep_on(&port->delta_msr_wait);
+ interruptible_sleep_on(&port->port.delta_msr_wait);
/* see if a signal did it */
if (signal_pending(current))
return -ERESTARTSYS;
return -EFAULT;
return 0;
-
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__);
- return wait_modem_info(port, arg);
default:
dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd);
break;
spin_unlock_irqrestore(&priv->lock, flags);
if (priv->line_status & UART_BREAK_ERROR)
usb_serial_handle_break(port);
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
tty = tty_port_tty_get(&port->port);
if (!tty)
line_status = priv->line_status;
priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
spin_unlock_irqrestore(&priv->lock, flags);
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
if (!urb->actual_length)
return;
.set_termios = pl2303_set_termios,
.tiocmget = pl2303_tiocmget,
.tiocmset = pl2303_tiocmset,
+ .tiocmiwait = pl2303_tiocmiwait,
.process_read_urb = pl2303_process_read_urb,
.read_int_callback = pl2303_read_int_callback,
.attach = pl2303_startup,
u8 shadowLSR;
u8 shadowMSR;
- struct async_icount icount;
-
struct usb_serial_port *port;
};
port_priv->urb_in_use = false;
spin_unlock_irqrestore(&port_priv->urb_lock, flags);
- mutex_lock(&port->serial->disc_mutex);
- if (port->serial->disconnected) {
- mutex_unlock(&port->serial->disc_mutex);
- return;
- }
-
/* flush the port transmit buffer */
i = usb_control_msg(serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
if (i < 0)
dev_err(&port->dev, "%s - close port failed %i\n",
__func__, i);
-
- mutex_unlock(&port->serial->disc_mutex);
}
static void qt2_disconnect(struct usb_serial *serial)
return 0;
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
-{
- struct qt2_port_private *priv = usb_get_serial_port_data(port);
- struct async_icount prev, cur;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
- prev = priv->icount;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- while (1) {
- wait_event_interruptible(port->delta_msr_wait,
- (port->serial->disconnected ||
- (priv->icount.rng != prev.rng) ||
- (priv->icount.dsr != prev.dsr) ||
- (priv->icount.dcd != prev.dcd) ||
- (priv->icount.cts != prev.cts)));
-
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- spin_lock_irqsave(&priv->lock, flags);
- cur = priv->icount;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- if ((prev.rng == cur.rng) &&
- (prev.dsr == cur.dsr) &&
- (prev.dcd == cur.dcd) &&
- (prev.cts == cur.cts))
- return -EIO;
-
- if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) ||
- (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) ||
- (arg & TIOCM_CD && (prev.dcd != cur.dcd)) ||
- (arg & TIOCM_CTS && (prev.cts != cur.cts)))
- return 0;
- }
- return 0;
-}
-
-static int qt2_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct qt2_port_private *priv = usb_get_serial_port_data(port);
- struct async_icount cnow = priv->icount;
-
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
-
- return 0;
-}
-
static int qt2_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
case TIOCGSERIAL:
return get_serial_info(port,
(struct serial_struct __user *)arg);
-
- case TIOCMIWAIT:
- return wait_modem_info(port, arg);
-
default:
break;
}
__func__);
break;
}
-
- if (port_priv->is_open)
- tty_flip_buffer_push(&port->port);
+ tty_flip_buffer_push(&port->port);
newport = *(ch + 3);
tty_insert_flip_string(&port->port, ch, 1);
}
- if (port_priv->is_open)
- tty_flip_buffer_push(&port->port);
+ tty_flip_buffer_push(&port->port);
}
static void qt2_write_bulk_callback(struct urb *urb)
if (newMSR & UART_MSR_ANY_DELTA) {
/* update input line counters */
if (newMSR & UART_MSR_DCTS)
- port_priv->icount.cts++;
-
+ port->icount.cts++;
if (newMSR & UART_MSR_DDSR)
- port_priv->icount.dsr++;
-
+ port->icount.dsr++;
if (newMSR & UART_MSR_DDCD)
- port_priv->icount.dcd++;
-
+ port->icount.dcd++;
if (newMSR & UART_MSR_TERI)
- port_priv->icount.rng++;
+ port->icount.rng++;
- wake_up_interruptible(&port->delta_msr_wait);
+ wake_up_interruptible(&port->port.delta_msr_wait);
}
}
port_priv->shadowLSR = newLSR;
spin_unlock_irqrestore(&port_priv->lock, flags);
- icount = &port_priv->icount;
+ icount = &port->icount;
if (newLSR & UART_LSR_BRK_ERROR_BITS) {
.break_ctl = qt2_break_ctl,
.tiocmget = qt2_tiocmget,
.tiocmset = qt2_tiocmset,
- .get_icount = qt2_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.ioctl = qt2_ioctl,
.set_termios = qt2_set_termios,
};
portdata->rts_state = 0;
portdata->dtr_state = 0;
- if (serial->dev) {
- mutex_lock(&serial->disc_mutex);
- if (!serial->disconnected) {
- serial->interface->needs_remote_wakeup = 0;
- /* odd error handling due to pm counters */
- if (!usb_autopm_get_interface(serial->interface))
- sierra_send_setup(port);
- else
- usb_autopm_get_interface_no_resume(serial->interface);
-
- }
- mutex_unlock(&serial->disc_mutex);
- spin_lock_irq(&intfdata->susp_lock);
- portdata->opened = 0;
- spin_unlock_irq(&intfdata->susp_lock);
+ mutex_lock(&serial->disc_mutex);
+ if (!serial->disconnected) {
+ serial->interface->needs_remote_wakeup = 0;
+ /* odd error handling due to pm counters */
+ if (!usb_autopm_get_interface(serial->interface))
+ sierra_send_setup(port);
+ else
+ usb_autopm_get_interface_no_resume(serial->interface);
+ }
+ mutex_unlock(&serial->disc_mutex);
+ spin_lock_irq(&intfdata->susp_lock);
+ portdata->opened = 0;
+ spin_unlock_irq(&intfdata->susp_lock);
- /* Stop reading urbs */
- sierra_stop_rx_urbs(port);
- /* .. and release them */
- for (i = 0; i < portdata->num_in_urbs; i++) {
- sierra_release_urb(portdata->in_urbs[i]);
- portdata->in_urbs[i] = NULL;
- }
+ sierra_stop_rx_urbs(port);
+ for (i = 0; i < portdata->num_in_urbs; i++) {
+ sierra_release_urb(portdata->in_urbs[i]);
+ portdata->in_urbs[i] = NULL;
}
}
/*
* spcp8x5 USB to serial adaptor driver
*
- * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com)
+ * Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com)
* Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
* Copyright (C) 2006 S1 Corp.
*
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
- *
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
-#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver"
+#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver"
+
+#define SPCP825_QUIRK_NO_UART_STATUS 0x01
+#define SPCP825_QUIRK_NO_WORK_MODE 0x02
#define SPCP8x5_007_VID 0x04FC
#define SPCP8x5_007_PID 0x0201
{ USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
{ USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
{ USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
- { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID)},
+ { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID),
+ .driver_info = SPCP825_QUIRK_NO_UART_STATUS |
+ SPCP825_QUIRK_NO_WORK_MODE },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
struct spcp8x5_usb_ctrl_arg {
- u8 type;
+ u8 type;
u8 cmd;
u8 cmd_type;
u16 value;
#define UART_OVERRUN_ERROR 0x40
#define UART_CTS 0x80
-enum spcp8x5_type {
- SPCP825_007_TYPE,
- SPCP825_008_TYPE,
- SPCP825_PHILIP_TYPE,
- SPCP825_INTERMATIC_TYPE,
- SPCP835_TYPE,
-};
-
struct spcp8x5_private {
- spinlock_t lock;
- enum spcp8x5_type type;
- u8 line_control;
- u8 line_status;
+ unsigned quirks;
+ spinlock_t lock;
+ u8 line_control;
};
+static int spcp8x5_probe(struct usb_serial *serial,
+ const struct usb_device_id *id)
+{
+ usb_set_serial_data(serial, (void *)id);
+
+ return 0;
+}
+
static int spcp8x5_port_probe(struct usb_serial_port *port)
{
- struct usb_serial *serial = port->serial;
+ const struct usb_device_id *id = usb_get_serial_data(port->serial);
struct spcp8x5_private *priv;
- enum spcp8x5_type type = SPCP825_007_TYPE;
- u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
-
- if (product == 0x0201)
- type = SPCP825_007_TYPE;
- else if (product == 0x0231)
- type = SPCP835_TYPE;
- else if (product == 0x0235)
- type = SPCP825_008_TYPE;
- else if (product == 0x0204)
- type = SPCP825_INTERMATIC_TYPE;
- else if (product == 0x0471 &&
- serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
- type = SPCP825_PHILIP_TYPE;
- dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
spin_lock_init(&priv->lock);
- priv->type = type;
+ priv->quirks = id->driver_info;
- usb_set_serial_port_data(port , priv);
+ usb_set_serial_port_data(port, priv);
return 0;
}
return 0;
}
-/* set the modem control line of the device.
- * NOTE spcp825-007 not supported this */
-static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
- enum spcp8x5_type type)
+static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr)
{
+ struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+ struct usb_device *dev = port->serial->dev;
int retval;
- u8 mcr = 0 ;
- if (type == SPCP825_007_TYPE)
+ if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
return -EPERM;
- mcr = (unsigned short)value;
retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
SET_UART_STATUS_TYPE, SET_UART_STATUS,
mcr, 0x04, NULL, 0, 100);
- if (retval != 0)
- dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
+ if (retval != 0) {
+ dev_err(&port->dev, "failed to set control lines: %d\n",
+ retval);
+ }
return retval;
}
-/* get the modem status register of the device
- * NOTE spcp825-007 not supported this */
-static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
- enum spcp8x5_type type)
+static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status)
{
- u8 *status_buffer;
+ struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+ struct usb_device *dev = port->serial->dev;
+ u8 *buf;
int ret;
- /* I return Permited not support here but seem inval device
- * is more fix */
- if (type == SPCP825_007_TYPE)
+ if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
return -EPERM;
- if (status == NULL)
- return -EINVAL;
- status_buffer = kmalloc(1, GFP_KERNEL);
- if (!status_buffer)
+ buf = kzalloc(1, GFP_KERNEL);
+ if (!buf)
return -ENOMEM;
- status_buffer[0] = status[0];
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
GET_UART_STATUS, GET_UART_STATUS_TYPE,
- 0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
+ 0, GET_UART_STATUS_MSR, buf, 1, 100);
if (ret < 0)
- dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
- status_buffer, ret);
+ dev_err(&port->dev, "failed to get modem status: %d", ret);
- dev_dbg(&dev->dev, "0xc0:0x22:0:6 %d - 0x%p ", ret, status_buffer);
- status[0] = status_buffer[0];
- kfree(status_buffer);
+ dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x", ret, *buf);
+ *status = *buf;
+ kfree(buf);
return ret;
}
-/* select the work mode.
- * NOTE this function not supported by spcp825-007 */
-static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
- u16 index, enum spcp8x5_type type)
+static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value,
+ u16 index)
{
+ struct spcp8x5_private *priv = usb_get_serial_port_data(port);
+ struct usb_device *dev = port->serial->dev;
int ret;
- /* I return Permited not support here but seem inval device
- * is more fix */
- if (type == SPCP825_007_TYPE)
+ if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE)
return;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
value, index, NULL, 0, 100);
- dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
+ dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index);
if (ret < 0)
- dev_dbg(&dev->dev,
- "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
+ dev_err(&port->dev, "failed to set work mode: %d\n", ret);
}
static int spcp8x5_carrier_raised(struct usb_serial_port *port)
{
- struct spcp8x5_private *priv = usb_get_serial_port_data(port);
- if (priv->line_status & MSR_STATUS_LINE_DCD)
+ u8 msr;
+ int ret;
+
+ ret = spcp8x5_get_msr(port, &msr);
+ if (ret || msr & MSR_STATUS_LINE_DCD)
return 1;
+
return 0;
}
| MCR_CONTROL_LINE_RTS);
control = priv->line_control;
spin_unlock_irqrestore(&priv->lock, flags);
- spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
+ spcp8x5_set_ctrl_line(port, control);
}
static void spcp8x5_init_termios(struct tty_struct *tty)
{
- /* for the 1st time call this function */
tty->termios = tty_std_termios;
tty->termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
tty->termios.c_ispeed = 115200;
tty->termios.c_ospeed = 115200;
}
-/* set the serial param for transfer. we should check if we really need to
- * transfer. if we set flow control we should do this too. */
static void spcp8x5_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
int i;
u8 control;
-
/* check that they really want us to change something */
if (!tty_termios_hw_change(&tty->termios, old_termios))
return;
if (control != priv->line_control) {
control = priv->line_control;
spin_unlock_irqrestore(&priv->lock, flags);
- spcp8x5_set_ctrlLine(serial->dev, control , priv->type);
+ spcp8x5_set_ctrl_line(port, control);
} else {
spin_unlock_irqrestore(&priv->lock, flags);
}
if (cflag & PARENB) {
buf[1] |= (cflag & PARODD) ?
SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
- } else
+ } else {
buf[1] |= SET_UART_FORMAT_PAR_NONE;
-
+ }
uartdata = buf[0] | buf[1]<<8;
i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
if (cflag & CRTSCTS) {
/* enable hardware flow control */
- spcp8x5_set_workMode(serial->dev, 0x000a,
- SET_WORKING_MODE_U2C, priv->type);
+ spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C);
}
}
-/* open the serial port. do some usb system call. set termios and get the line
- * status of the device. */
static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct ktermios tmp_termios;
struct usb_serial *serial = port->serial;
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
int ret;
- unsigned long flags;
- u8 status = 0x30;
- /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
usb_clear_halt(serial->dev, port->write_urb->pipe);
usb_clear_halt(serial->dev, port->read_urb->pipe);
if (ret)
return ret;
- spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
+ spcp8x5_set_ctrl_line(port, priv->line_control);
- /* Setup termios */
if (tty)
spcp8x5_set_termios(tty, port, &tmp_termios);
- spcp8x5_get_msr(serial->dev, &status, priv->type);
-
- /* may be we should update uart status here but now we did not do */
- spin_lock_irqsave(&priv->lock, flags);
- priv->line_status = status & 0xf0 ;
- spin_unlock_irqrestore(&priv->lock, flags);
-
port->port.drain_delay = 256;
return usb_serial_generic_open(tty, port);
}
-static void spcp8x5_process_read_urb(struct urb *urb)
-{
- struct usb_serial_port *port = urb->context;
- struct spcp8x5_private *priv = usb_get_serial_port_data(port);
- unsigned char *data = urb->transfer_buffer;
- unsigned long flags;
- u8 status;
- char tty_flag;
-
- /* get tty_flag from status */
- tty_flag = TTY_NORMAL;
-
- spin_lock_irqsave(&priv->lock, flags);
- status = priv->line_status;
- priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
- spin_unlock_irqrestore(&priv->lock, flags);
- /* wake up the wait for termios */
- wake_up_interruptible(&port->delta_msr_wait);
-
- if (!urb->actual_length)
- return;
-
-
- if (status & UART_STATE_TRANSIENT_MASK) {
- /* break takes precedence over parity, which takes precedence
- * over framing errors */
- if (status & UART_BREAK_ERROR)
- tty_flag = TTY_BREAK;
- else if (status & UART_PARITY_ERROR)
- tty_flag = TTY_PARITY;
- else if (status & UART_FRAME_ERROR)
- tty_flag = TTY_FRAME;
- dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
-
- /* overrun is special, not associated with a char */
- if (status & UART_OVERRUN_ERROR)
- tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
-
- if (status & UART_DCD) {
- struct tty_struct *tty = tty_port_tty_get(&port->port);
- if (tty) {
- usb_serial_handle_dcd_change(port, tty,
- priv->line_status & MSR_STATUS_LINE_DCD);
- tty_kref_put(tty);
- }
- }
- }
-
- tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
- urb->actual_length);
- tty_flip_buffer_push(&port->port);
-}
-
-static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
- unsigned int arg)
-{
- struct spcp8x5_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- unsigned int prevstatus;
- unsigned int status;
- unsigned int changed;
-
- spin_lock_irqsave(&priv->lock, flags);
- prevstatus = priv->line_status;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- while (1) {
- /* wake up in bulk read */
- interruptible_sleep_on(&port->delta_msr_wait);
-
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- spin_lock_irqsave(&priv->lock, flags);
- status = priv->line_status;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- changed = prevstatus^status;
-
- if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
- ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
- ((arg & TIOCM_CD) && (changed & MSR_STATUS_LINE_DCD)) ||
- ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
- return 0;
-
- prevstatus = status;
- }
- /* NOTREACHED */
- return 0;
-}
-
-static int spcp8x5_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
-{
- struct usb_serial_port *port = tty->driver_data;
-
- dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__,
- port->number, cmd);
-
- switch (cmd) {
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,
- port->number);
- return spcp8x5_wait_modem_info(port, arg);
-
- default:
- dev_dbg(&port->dev, "%s not supported = 0x%04x", __func__,
- cmd);
- break;
- }
-
- return -ENOIOCTLCMD;
-}
-
static int spcp8x5_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear)
{
control = priv->line_control;
spin_unlock_irqrestore(&priv->lock, flags);
- return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
+ return spcp8x5_set_ctrl_line(port, control);
}
static int spcp8x5_tiocmget(struct tty_struct *tty)
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
unsigned int mcr;
- unsigned int status;
+ u8 status;
unsigned int result;
+ result = spcp8x5_get_msr(port, &status);
+ if (result)
+ return result;
+
spin_lock_irqsave(&priv->lock, flags);
mcr = priv->line_control;
- status = priv->line_status;
spin_unlock_irqrestore(&priv->lock, flags);
result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
return result;
}
-/* All of the device info needed for the spcp8x5 SIO serial converter */
static struct usb_serial_driver spcp8x5_device = {
.driver = {
.owner = THIS_MODULE,
},
.id_table = id_table,
.num_ports = 1,
- .open = spcp8x5_open,
+ .open = spcp8x5_open,
.dtr_rts = spcp8x5_dtr_rts,
.carrier_raised = spcp8x5_carrier_raised,
- .set_termios = spcp8x5_set_termios,
+ .set_termios = spcp8x5_set_termios,
.init_termios = spcp8x5_init_termios,
- .ioctl = spcp8x5_ioctl,
- .tiocmget = spcp8x5_tiocmget,
- .tiocmset = spcp8x5_tiocmset,
+ .tiocmget = spcp8x5_tiocmget,
+ .tiocmset = spcp8x5_tiocmset,
+ .probe = spcp8x5_probe,
.port_probe = spcp8x5_port_probe,
.port_remove = spcp8x5_port_remove,
- .process_read_urb = spcp8x5_process_read_urb,
};
static struct usb_serial_driver * const serial_drivers[] = {
spinlock_t status_lock;
u8 shadowLSR;
u8 shadowMSR;
- struct async_icount icount;
};
static inline int ssu100_control_msg(struct usb_device *dev,
return usb_serial_generic_open(tty, port);
}
-static void ssu100_close(struct usb_serial_port *port)
-{
- usb_serial_generic_close(port);
-}
-
static int get_serial_info(struct usb_serial_port *port,
struct serial_struct __user *retinfo)
{
return 0;
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
-{
- struct ssu100_port_private *priv = usb_get_serial_port_data(port);
- struct async_icount prev, cur;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->status_lock, flags);
- prev = priv->icount;
- spin_unlock_irqrestore(&priv->status_lock, flags);
-
- while (1) {
- wait_event_interruptible(port->delta_msr_wait,
- (port->serial->disconnected ||
- (priv->icount.rng != prev.rng) ||
- (priv->icount.dsr != prev.dsr) ||
- (priv->icount.dcd != prev.dcd) ||
- (priv->icount.cts != prev.cts)));
-
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- spin_lock_irqsave(&priv->status_lock, flags);
- cur = priv->icount;
- spin_unlock_irqrestore(&priv->status_lock, flags);
-
- if ((prev.rng == cur.rng) &&
- (prev.dsr == cur.dsr) &&
- (prev.dcd == cur.dcd) &&
- (prev.cts == cur.cts))
- return -EIO;
-
- if ((arg & TIOCM_RNG && (prev.rng != cur.rng)) ||
- (arg & TIOCM_DSR && (prev.dsr != cur.dsr)) ||
- (arg & TIOCM_CD && (prev.dcd != cur.dcd)) ||
- (arg & TIOCM_CTS && (prev.cts != cur.cts)))
- return 0;
- }
- return 0;
-}
-
-static int ssu100_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct ssu100_port_private *priv = usb_get_serial_port_data(port);
- struct async_icount cnow = priv->icount;
-
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
-
- return 0;
-}
-
-
-
static int ssu100_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
case TIOCGSERIAL:
return get_serial_info(port,
(struct serial_struct __user *) arg);
-
- case TIOCMIWAIT:
- return wait_modem_info(port, arg);
-
default:
break;
}
if (msr & UART_MSR_ANY_DELTA) {
/* update input line counters */
if (msr & UART_MSR_DCTS)
- priv->icount.cts++;
+ port->icount.cts++;
if (msr & UART_MSR_DDSR)
- priv->icount.dsr++;
+ port->icount.dsr++;
if (msr & UART_MSR_DDCD)
- priv->icount.dcd++;
+ port->icount.dcd++;
if (msr & UART_MSR_TERI)
- priv->icount.rng++;
- wake_up_interruptible(&port->delta_msr_wait);
+ port->icount.rng++;
+ wake_up_interruptible(&port->port.delta_msr_wait);
}
}
/* we always want to update icount, but we only want to
* update tty_flag for one case */
if (lsr & UART_LSR_BI) {
- priv->icount.brk++;
+ port->icount.brk++;
*tty_flag = TTY_BREAK;
usb_serial_handle_break(port);
}
if (lsr & UART_LSR_PE) {
- priv->icount.parity++;
+ port->icount.parity++;
if (*tty_flag == TTY_NORMAL)
*tty_flag = TTY_PARITY;
}
if (lsr & UART_LSR_FE) {
- priv->icount.frame++;
+ port->icount.frame++;
if (*tty_flag == TTY_NORMAL)
*tty_flag = TTY_FRAME;
}
if (lsr & UART_LSR_OE){
- priv->icount.overrun++;
+ port->icount.overrun++;
if (*tty_flag == TTY_NORMAL)
*tty_flag = TTY_OVERRUN;
}
.id_table = id_table,
.num_ports = 1,
.open = ssu100_open,
- .close = ssu100_close,
.attach = ssu100_attach,
.port_probe = ssu100_port_probe,
.port_remove = ssu100_port_remove,
.process_read_urb = ssu100_process_read_urb,
.tiocmget = ssu100_tiocmget,
.tiocmset = ssu100_tiocmset,
- .get_icount = ssu100_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.ioctl = ssu100_ioctl,
.set_termios = ssu100_set_termios,
- .disconnect = usb_serial_generic_disconnect,
};
static struct usb_serial_driver * const serial_drivers[] = {
unsigned int tp_uart_base_addr;
int tp_flags;
int tp_closing_wait;/* in .01 secs */
- struct async_icount tp_icount;
wait_queue_head_t tp_write_wait;
struct ti_device *tp_tdev;
struct usb_serial_port *tp_port;
static void ti_unthrottle(struct tty_struct *tty);
static int ti_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg);
-static int ti_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount);
static void ti_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios);
static int ti_tiocmget(struct tty_struct *tty);
.set_termios = ti_set_termios,
.tiocmget = ti_tiocmget,
.tiocmset = ti_tiocmset,
- .get_icount = ti_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.break_ctl = ti_break,
.read_int_callback = ti_interrupt_callback,
.read_bulk_callback = ti_bulk_in_callback,
.set_termios = ti_set_termios,
.tiocmget = ti_tiocmget,
.tiocmset = ti_tiocmset,
- .get_icount = ti_get_icount,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
.break_ctl = ti_break,
.read_int_callback = ti_interrupt_callback,
.read_bulk_callback = ti_bulk_in_callback,
port_number = port->number - port->serial->minor;
- memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
-
tport->tp_msr = 0;
tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
}
}
-static int ti_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct ti_port *tport = usb_get_serial_port_data(port);
- struct async_icount cnow = tport->tp_icount;
-
- dev_dbg(&port->dev, "%s - TIOCGICOUNT RX=%d, TX=%d\n", __func__,
- cnow.rx, cnow.tx);
-
- icount->cts = cnow.cts;
- icount->dsr = cnow.dsr;
- icount->rng = cnow.rng;
- icount->dcd = cnow.dcd;
- icount->rx = cnow.rx;
- icount->tx = cnow.tx;
- icount->frame = cnow.frame;
- icount->overrun = cnow.overrun;
- icount->parity = cnow.parity;
- icount->brk = cnow.brk;
- icount->buf_overrun = cnow.buf_overrun;
-
- return 0;
-}
-
static int ti_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct usb_serial_port *port = tty->driver_data;
struct ti_port *tport = usb_get_serial_port_data(port);
- struct async_icount cnow;
- struct async_icount cprev;
dev_dbg(&port->dev, "%s - cmd = 0x%04X\n", __func__, cmd);
dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
return ti_set_serial_info(tty, tport,
(struct serial_struct __user *)arg);
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
- cprev = tport->tp_icount;
- while (1) {
- interruptible_sleep_on(&port->delta_msr_wait);
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if (port->serial->disconnected)
- return -EIO;
-
- cnow = tport->tp_icount;
- if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
- cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
- return -EIO; /* no change => error */
- if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
- ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
- ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
- ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
- return 0;
- cprev = cnow;
- }
- break;
}
return -ENOIOCTLCMD;
}
else
ti_recv(port, urb->transfer_buffer, urb->actual_length);
spin_lock(&tport->tp_lock);
- tport->tp_icount.rx += urb->actual_length;
+ port->icount.rx += urb->actual_length;
spin_unlock(&tport->tp_lock);
}
/* TODO: reschedule ti_send */
} else {
spin_lock_irqsave(&tport->tp_lock, flags);
- tport->tp_icount.tx += count;
+ port->icount.tx += count;
spin_unlock_irqrestore(&tport->tp_lock, flags);
}
if (msr & TI_MSR_DELTA_MASK) {
spin_lock_irqsave(&tport->tp_lock, flags);
- icount = &tport->tp_icount;
+ icount = &tport->tp_port->icount;
if (msr & TI_MSR_DELTA_CTS)
icount->cts++;
if (msr & TI_MSR_DELTA_DSR)
icount->dcd++;
if (msr & TI_MSR_DELTA_RI)
icount->rng++;
- wake_up_interruptible(&tport->tp_port->delta_msr_wait);
+ wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
spin_unlock_irqrestore(&tport->tp_lock, flags);
}
/*
* USB Serial Converter driver
*
+ * Copyright (C) 2009 - 2013 Johan Hovold (jhovold@gmail.com)
* Copyright (C) 1999 - 2012 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2000 Peter Berger (pberger@brimson.com)
* Copyright (C) 2000 Al Borchers (borchers@steinerpoint.com)
*
* See Documentation/usb/usb-serial.txt for more information on using this
* driver
- *
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
drivers depend on it.
*/
-/* initially all NULL */
static struct usb_serial *serial_table[SERIAL_TTY_MINORS];
static DEFINE_MUTEX(table_lock);
static LIST_HEAD(usb_serial_driver_list);
if (serial->minor != SERIAL_TTY_NO_MINOR)
return_serial(serial);
- if (serial->attached)
+ if (serial->attached && serial->type->release)
serial->type->release(serial);
/* Now that nothing is using the ports, they can be freed */
return retval;
}
-static int serial_activate(struct tty_port *tport, struct tty_struct *tty)
+static int serial_port_activate(struct tty_port *tport, struct tty_struct *tty)
{
struct usb_serial_port *port =
container_of(tport, struct usb_serial_port, port);
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
+
return tty_port_open(&port->port, tty, filp);
}
/**
- * serial_down - shut down hardware
+ * serial_port_shutdown - shut down hardware
* @tport: tty port to shut down
*
- * Shut down a USB serial port unless it is the console. We never
- * shut down the console hardware as it will always be in use. Serialized
- * against activate by the tport mutex and kept to matching open/close pairs
+ * Shut down a USB serial port. Serialized against activate by the
+ * tport mutex and kept to matching open/close pairs
* of calls by the ASYNCB_INITIALIZED flag.
+ *
+ * Not called if tty is console.
*/
-static void serial_down(struct tty_port *tport)
+static void serial_port_shutdown(struct tty_port *tport)
{
struct usb_serial_port *port =
container_of(tport, struct usb_serial_port, port);
struct usb_serial_driver *drv = port->serial->type;
- /*
- * The console is magical. Do not hang up the console hardware
- * or there will be tears.
- */
- if (port->port.console)
- return;
+
if (drv->close)
drv->close(port);
}
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
+
tty_port_hangup(&port->port);
}
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
+
tty_port_close(&port->port, tty, filp);
}
struct usb_serial *serial;
struct module *owner;
+ dev_dbg(tty->dev, "%s\n", __func__);
+
/* The console is magical. Do not hang up the console hardware
* or there will be tears.
*/
if (port->port.console)
return;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
-
tty->driver_data = NULL;
serial = port->serial;
if (port->serial->dev->state == USB_STATE_NOTATTACHED)
goto exit;
- dev_dbg(tty->dev, "%s - port %d, %d byte(s)\n", __func__,
- port->number, count);
+ dev_dbg(tty->dev, "%s - %d byte(s)\n", __func__, count);
- /* pass on to the driver specific version of this function */
retval = port->serial->type->write(tty, port, buf, count);
if (retval < 0)
retval = usb_translate_errors(retval);
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
- /* pass on to the driver specific version of this function */
+ dev_dbg(tty->dev, "%s\n", __func__);
+
return port->serial->type->write_room(tty);
}
struct usb_serial *serial = port->serial;
int count = 0;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
mutex_lock(&serial->disc_mutex);
/* if the device was unplugged then any remaining characters
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
- /* pass on to the driver specific version of this function */
if (port->serial->type->throttle)
port->serial->type->throttle(tty);
}
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
- /* pass on to the driver specific version of this function */
if (port->serial->type->unthrottle)
port->serial->type->unthrottle(tty);
}
struct usb_serial_port *port = tty->driver_data;
int retval = -ENODEV;
- dev_dbg(tty->dev, "%s - port %d, cmd 0x%.4x\n", __func__,
- port->number, cmd);
+ dev_dbg(tty->dev, "%s - cmd 0x%.4x\n", __func__, cmd);
+
+ switch (cmd) {
+ case TIOCMIWAIT:
+ if (port->serial->type->tiocmiwait)
+ retval = port->serial->type->tiocmiwait(tty, arg);
+ break;
+ default:
+ if (port->serial->type->ioctl)
+ retval = port->serial->type->ioctl(tty, cmd, arg);
+ else
+ retval = -ENOIOCTLCMD;
+ }
- /* pass on to the driver specific version of this function
- if it is available */
- if (port->serial->type->ioctl) {
- retval = port->serial->type->ioctl(tty, cmd, arg);
- } else
- retval = -ENOIOCTLCMD;
return retval;
}
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
- /* pass on to the driver specific version of this function
- if it is available */
if (port->serial->type->set_termios)
port->serial->type->set_termios(tty, port, old);
else
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
- /* pass on to the driver specific version of this function
- if it is available */
if (port->serial->type->break_ctl)
port->serial->type->break_ctl(tty, break_state);
+
return 0;
}
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
if (port->serial->type->tiocmget)
return port->serial->type->tiocmget(tty);
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
if (port->serial->type->tiocmset)
return port->serial->type->tiocmset(tty, set, clear);
{
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
if (port->serial->type->get_icount)
return port->serial->type->get_icount(tty, icount);
if (!tty)
return;
- dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number);
+ dev_dbg(tty->dev, "%s\n", __func__);
tty_wakeup(tty);
tty_kref_put(tty);
}
-static void kill_traffic(struct usb_serial_port *port)
+static void usb_serial_port_poison_urbs(struct usb_serial_port *port)
{
int i;
for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
- usb_kill_urb(port->read_urbs[i]);
+ usb_poison_urb(port->read_urbs[i]);
for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
- usb_kill_urb(port->write_urbs[i]);
- /*
- * This is tricky.
- * Some drivers submit the read_urb in the
- * handler for the write_urb or vice versa
- * this order determines the order in which
- * usb_kill_urb() must be used to reliably
- * kill the URBs. As it is unknown here,
- * both orders must be used in turn.
- * The call below is not redundant.
- */
- usb_kill_urb(port->read_urb);
- usb_kill_urb(port->interrupt_in_urb);
- usb_kill_urb(port->interrupt_out_urb);
+ usb_poison_urb(port->write_urbs[i]);
+
+ usb_poison_urb(port->interrupt_in_urb);
+ usb_poison_urb(port->interrupt_out_urb);
+}
+
+static void usb_serial_port_unpoison_urbs(struct usb_serial_port *port)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
+ usb_unpoison_urb(port->read_urbs[i]);
+ for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
+ usb_unpoison_urb(port->write_urbs[i]);
+
+ usb_unpoison_urb(port->interrupt_in_urb);
+ usb_unpoison_urb(port->interrupt_out_urb);
}
-static void port_release(struct device *dev)
+static void usb_serial_port_release(struct device *dev)
{
struct usb_serial_port *port = to_usb_serial_port(dev);
int i;
dev_dbg(dev, "%s\n", __func__);
- /*
- * Stop all the traffic before cancelling the work, so that
- * nobody will restart it by calling usb_serial_port_softint.
- */
- kill_traffic(port);
- cancel_work_sync(&port->work);
-
usb_free_urb(port->interrupt_in_urb);
usb_free_urb(port->interrupt_out_urb);
for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i) {
struct usb_serial *serial;
serial = kzalloc(sizeof(*serial), GFP_KERNEL);
- if (!serial) {
- dev_err(&dev->dev, "%s - out of memory\n", __func__);
+ if (!serial)
return NULL;
- }
serial->dev = usb_get_dev(dev);
serial->type = driver;
serial->interface = usb_get_intf(interface);
return NULL;
}
-static int serial_carrier_raised(struct tty_port *port)
+static int serial_port_carrier_raised(struct tty_port *port)
{
struct usb_serial_port *p = container_of(port, struct usb_serial_port, port);
struct usb_serial_driver *drv = p->serial->type;
return 1;
}
-static void serial_dtr_rts(struct tty_port *port, int on)
+static void serial_port_dtr_rts(struct tty_port *port, int on)
{
struct usb_serial_port *p = container_of(port, struct usb_serial_port, port);
struct usb_serial *serial = p->serial;
}
static const struct tty_port_operations serial_port_ops = {
- .carrier_raised = serial_carrier_raised,
- .dtr_rts = serial_dtr_rts,
- .activate = serial_activate,
- .shutdown = serial_down,
+ .carrier_raised = serial_port_carrier_raised,
+ .dtr_rts = serial_port_dtr_rts,
+ .activate = serial_port_activate,
+ .shutdown = serial_port_shutdown,
};
static int usb_serial_probe(struct usb_interface *interface,
serial = create_serial(dev, interface, type);
if (!serial) {
module_put(type->driver.owner);
- dev_err(ddev, "%s - out of memory\n", __func__);
return -ENOMEM;
}
port->port.ops = &serial_port_ops;
port->serial = serial;
spin_lock_init(&port->lock);
- init_waitqueue_head(&port->delta_msr_wait);
/* Keep this for private driver use for the moment but
should probably go away */
INIT_WORK(&port->work, usb_serial_port_work);
port->dev.parent = &interface->dev;
port->dev.driver = NULL;
port->dev.bus = &usb_serial_bus_type;
- port->dev.release = &port_release;
+ port->dev.release = &usb_serial_port_release;
device_initialize(&port->dev);
}
for (j = 0; j < ARRAY_SIZE(port->read_urbs); ++j) {
set_bit(j, &port->read_urbs_free);
port->read_urbs[j] = usb_alloc_urb(0, GFP_KERNEL);
- if (!port->read_urbs[j]) {
- dev_err(ddev, "No free urbs available\n");
+ if (!port->read_urbs[j])
goto probe_error;
- }
port->bulk_in_buffers[j] = kmalloc(buffer_size,
GFP_KERNEL);
- if (!port->bulk_in_buffers[j]) {
- dev_err(ddev, "Couldn't allocate bulk_in_buffer\n");
+ if (!port->bulk_in_buffers[j])
goto probe_error;
- }
usb_fill_bulk_urb(port->read_urbs[j], dev,
usb_rcvbulkpipe(dev,
endpoint->bEndpointAddress),
for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j) {
set_bit(j, &port->write_urbs_free);
port->write_urbs[j] = usb_alloc_urb(0, GFP_KERNEL);
- if (!port->write_urbs[j]) {
- dev_err(ddev, "No free urbs available\n");
+ if (!port->write_urbs[j])
goto probe_error;
- }
port->bulk_out_buffers[j] = kmalloc(buffer_size,
GFP_KERNEL);
- if (!port->bulk_out_buffers[j]) {
- dev_err(ddev, "Couldn't allocate bulk_out_buffer\n");
+ if (!port->bulk_out_buffers[j])
goto probe_error;
- }
usb_fill_bulk_urb(port->write_urbs[j], dev,
usb_sndbulkpipe(dev,
endpoint->bEndpointAddress),
endpoint = interrupt_in_endpoint[i];
port = serial->port[i];
port->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!port->interrupt_in_urb) {
- dev_err(ddev, "No free urbs available\n");
+ if (!port->interrupt_in_urb)
goto probe_error;
- }
buffer_size = usb_endpoint_maxp(endpoint);
port->interrupt_in_endpointAddress =
endpoint->bEndpointAddress;
port->interrupt_in_buffer = kmalloc(buffer_size,
GFP_KERNEL);
- if (!port->interrupt_in_buffer) {
- dev_err(ddev, "Couldn't allocate interrupt_in_buffer\n");
+ if (!port->interrupt_in_buffer)
goto probe_error;
- }
usb_fill_int_urb(port->interrupt_in_urb, dev,
usb_rcvintpipe(dev,
endpoint->bEndpointAddress),
endpoint = interrupt_out_endpoint[i];
port = serial->port[i];
port->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!port->interrupt_out_urb) {
- dev_err(ddev, "No free urbs available\n");
+ if (!port->interrupt_out_urb)
goto probe_error;
- }
buffer_size = usb_endpoint_maxp(endpoint);
port->interrupt_out_size = buffer_size;
port->interrupt_out_endpointAddress =
endpoint->bEndpointAddress;
port->interrupt_out_buffer = kmalloc(buffer_size,
GFP_KERNEL);
- if (!port->interrupt_out_buffer) {
- dev_err(ddev, "Couldn't allocate interrupt_out_buffer\n");
+ if (!port->interrupt_out_buffer)
goto probe_error;
- }
usb_fill_int_urb(port->interrupt_out_urb, dev,
usb_sndintpipe(dev,
endpoint->bEndpointAddress),
tty_vhangup(tty);
tty_kref_put(tty);
}
- kill_traffic(port);
+ usb_serial_port_poison_urbs(port);
+ wake_up_interruptible(&port->port.delta_msr_wait);
cancel_work_sync(&port->work);
if (device_is_registered(&port->dev))
device_del(&port->dev);
}
}
- serial->type->disconnect(serial);
+ if (serial->type->disconnect)
+ serial->type->disconnect(serial);
/* let the last holder of this object cause it to be cleaned up */
usb_serial_put(serial);
serial->suspending = 1;
+ /*
+ * serial->type->suspend() MUST return 0 in system sleep context,
+ * otherwise, the resume callback has to recover device from
+ * previous suspend failure.
+ */
if (serial->type->suspend) {
r = serial->type->suspend(serial, message);
if (r < 0) {
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
if (port)
- kill_traffic(port);
+ usb_serial_port_poison_urbs(port);
}
err_out:
}
EXPORT_SYMBOL(usb_serial_suspend);
+static void usb_serial_unpoison_port_urbs(struct usb_serial *serial)
+{
+ struct usb_serial_port *port;
+ int i;
+
+ for (i = 0; i < serial->num_ports; ++i) {
+ port = serial->port[i];
+ if (port)
+ usb_serial_port_unpoison_urbs(port);
+ }
+}
+
int usb_serial_resume(struct usb_interface *intf)
{
struct usb_serial *serial = usb_get_intfdata(intf);
int rv;
+ usb_serial_unpoison_port_urbs(serial);
+
serial->suspending = 0;
if (serial->type->resume)
rv = serial->type->resume(serial);
struct usb_serial *serial = usb_get_intfdata(intf);
int rv;
+ usb_serial_unpoison_port_urbs(serial);
+
serial->suspending = 0;
if (serial->type->reset_resume)
rv = serial->type->reset_resume(serial);
do { \
if (!type->function) { \
type->function = usb_serial_generic_##function; \
- pr_debug("Had to override the " #function \
- " usb serial operation with the generic one.");\
- } \
+ pr_debug("%s: using generic " #function "\n", \
+ type->driver.name); \
+ } \
} while (0)
-static void fixup_generic(struct usb_serial_driver *device)
+static void usb_serial_operations_init(struct usb_serial_driver *device)
{
set_to_generic_if_null(device, open);
set_to_generic_if_null(device, write);
set_to_generic_if_null(device, chars_in_buffer);
set_to_generic_if_null(device, read_bulk_callback);
set_to_generic_if_null(device, write_bulk_callback);
- set_to_generic_if_null(device, disconnect);
- set_to_generic_if_null(device, release);
set_to_generic_if_null(device, process_read_urb);
set_to_generic_if_null(device, prepare_write_buffer);
}
if (usb_disabled())
return -ENODEV;
- fixup_generic(driver);
-
if (!driver->description)
driver->description = driver->driver.name;
if (!driver->usb_driver) {
return -EINVAL;
}
+ usb_serial_operations_init(driver);
+
/* Add this device to our list of devices */
mutex_lock(&table_lock);
list_add(&driver->driver_list, &usb_serial_driver_list);
}
EXPORT_SYMBOL_GPL(usb_serial_deregister_drivers);
-/* Module information */
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
portdata = usb_get_serial_port_data(port);
- if (serial->dev) {
- /* Stop reading/writing urbs */
- spin_lock_irq(&intfdata->susp_lock);
- portdata->opened = 0;
- spin_unlock_irq(&intfdata->susp_lock);
+ /* Stop reading/writing urbs */
+ spin_lock_irq(&intfdata->susp_lock);
+ portdata->opened = 0;
+ spin_unlock_irq(&intfdata->susp_lock);
- for (i = 0; i < N_IN_URB; i++)
- usb_kill_urb(portdata->in_urbs[i]);
- for (i = 0; i < N_OUT_URB; i++)
- usb_kill_urb(portdata->out_urbs[i]);
- /* balancing - important as an error cannot be handled*/
- usb_autopm_get_interface_no_resume(serial->interface);
- serial->interface->needs_remote_wakeup = 0;
- }
+ for (i = 0; i < N_IN_URB; i++)
+ usb_kill_urb(portdata->in_urbs[i]);
+ for (i = 0; i < N_OUT_URB; i++)
+ usb_kill_urb(portdata->out_urbs[i]);
+
+ /* balancing - important as an error cannot be handled*/
+ usb_autopm_get_interface_no_resume(serial->interface);
+ serial->interface->needs_remote_wakeup = 0;
}
EXPORT_SYMBOL(usb_wwan_close);
{
unsigned char *transfer_buffer;
- /* shutdown our urbs */
usb_serial_generic_close(port);
usb_kill_urb(port->interrupt_in_urb);
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected) {
- /* Try to send shutdown message, unless the device is gone */
- transfer_buffer = kmalloc(0x12, GFP_KERNEL);
- if (transfer_buffer) {
- usb_control_msg(port->serial->dev,
+ transfer_buffer = kmalloc(0x12, GFP_KERNEL);
+ if (!transfer_buffer)
+ return;
+ usb_control_msg(port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0),
VISOR_CLOSE_NOTIFICATION, 0xc2,
0x0000, 0x0000,
transfer_buffer, 0x12, 300);
- kfree(transfer_buffer);
- }
- }
- mutex_unlock(&port->serial->disc_mutex);
+ kfree(transfer_buffer);
}
static void visor_read_int_callback(struct urb *urb)
retStatus = ISD200_ERROR;
else {
info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
- info->RegsBuf = (unsigned char *)
- kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
+ info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
info->srb.sense_buffer =
kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+ maxp = min(maxp, ONETOUCH_PKT_LEN);
onetouch = kzalloc(sizeof(struct usb_onetouch), GFP_KERNEL);
input_dev = input_allocate_device();
input_dev->open = usb_onetouch_open;
input_dev->close = usb_onetouch_close;
- usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data,
- (maxp > 8 ? 8 : maxp),
+ usb_fill_int_urb(onetouch->irq, udev, pipe, onetouch->data, maxp,
usb_onetouch_irq, onetouch, endpoint->bInterval);
onetouch->irq->transfer_dma = onetouch->data_dma;
onetouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
__u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
int errors; /* the last request tanked */
bool ongoing_read; /* a read is going on */
- bool processed_urb; /* indicates we haven't processed the urb */
spinlock_t err_lock; /* lock for errors */
struct kref kref;
struct mutex io_mutex; /* synchronize I/O with disconnect */
- struct completion bulk_in_completion; /* to wait for an ongoing read */
+ wait_queue_head_t bulk_in_wait; /* to wait for an ongoing read */
};
#define to_skel_dev(d) container_of(d, struct usb_skel, kref)
dev->ongoing_read = 0;
spin_unlock(&dev->err_lock);
- complete(&dev->bulk_in_completion);
+ wake_up_interruptible(&dev->bulk_in_wait);
}
static int skel_do_read_io(struct usb_skel *dev, size_t count)
dev->ongoing_read = 1;
spin_unlock_irq(&dev->err_lock);
+ /* submit bulk in urb, which means no data to deliver */
+ dev->bulk_in_filled = 0;
+ dev->bulk_in_copied = 0;
+
/* do it */
rv = usb_submit_urb(dev->bulk_in_urb, GFP_KERNEL);
if (rv < 0) {
dev_err(&dev->interface->dev,
"%s - failed submitting read urb, error %d\n",
__func__, rv);
- dev->bulk_in_filled = 0;
rv = (rv == -ENOMEM) ? rv : -EIO;
spin_lock_irq(&dev->err_lock);
dev->ongoing_read = 0;
* IO may take forever
* hence wait in an interruptible state
*/
- rv = wait_for_completion_interruptible(&dev->bulk_in_completion);
+ rv = wait_event_interruptible(dev->bulk_in_wait, (!dev->ongoing_read));
if (rv < 0)
goto exit;
- /*
- * by waiting we also semiprocessed the urb
- * we must finish now
- */
- dev->bulk_in_copied = 0;
- dev->processed_urb = 1;
- }
-
- if (!dev->processed_urb) {
- /*
- * the URB hasn't been processed
- * do it now
- */
- wait_for_completion(&dev->bulk_in_completion);
- dev->bulk_in_copied = 0;
- dev->processed_urb = 1;
}
/* errors must be reported */
dev->errors = 0;
/* to preserve notifications about reset */
rv = (rv == -EPIPE) ? rv : -EIO;
- /* no data to deliver */
- dev->bulk_in_filled = 0;
/* report it */
goto exit;
}
mutex_init(&dev->io_mutex);
spin_lock_init(&dev->err_lock);
init_usb_anchor(&dev->submitted);
- init_completion(&dev->bulk_in_completion);
+ init_waitqueue_head(&dev->bulk_in_wait);
dev->udev = usb_get_dev(interface_to_usbdev(interface));
dev->interface = interface;
* @lpm_capable: device supports LPM
* @usb2_hw_lpm_capable: device can perform USB2 hardware LPM
* @usb2_hw_lpm_enabled: USB2 hardware LPM enabled
+ * @usb3_lpm_enabled: USB3 hardware LPM enabled
* @string_langid: language ID for strings
* @product: iProduct string, if present (static)
* @manufacturer: iManufacturer string, if present (static)
* @serial: iSerialNumber string, if present (static)
* @filelist: usbfs files that are open to this device
- * @usb_classdev: USB class device that was created for usbfs device
- * access from userspace
- * @usbfs_dentry: usbfs dentry entry for the device
* @maxchild: number of ports if hub
* @quirks: quirks of the whole device
* @urbnum: number of URBs submitted for the whole device
#endif
/* USB autosuspend and autoresume */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
extern void usb_enable_autosuspend(struct usb_device *udev);
extern void usb_disable_autosuspend(struct usb_device *udev);
* the "usbfs" filesystem. This lets devices provide ways to
* expose information to user space regardless of where they
* do (or don't) show up otherwise in the filesystem.
- * @suspend: Called when the device is going to be suspended by the system.
+ * @suspend: Called when the device is going to be suspended by the
+ * system either from system sleep or runtime suspend context. The
+ * return value will be ignored in system sleep context, so do NOT
+ * try to continue using the device if suspend fails in this case.
+ * Instead, let the resume or reset-resume routine recover from
+ * the failure.
* @resume: Called when the device is being resumed by the system.
* @reset_resume: Called when the suspended device has been reset instead
* of being resumed.
#ifndef __LINUX_USB_CDC_WDM_H
#define __LINUX_USB_CDC_WDM_H
+#include <uapi/linux/usb/cdc-wdm.h>
+
extern struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf,
struct usb_endpoint_descriptor *ep,
int bufsize,
struct timer_list rh_timer; /* drives root-hub polling */
struct urb *status_urb; /* the current status urb */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
struct work_struct wakeup_work; /* for remote wakeup */
#endif
extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg);
#endif /* CONFIG_PM */
-#ifdef CONFIG_USB_SUSPEND
+#ifdef CONFIG_PM_RUNTIME
extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd);
#else
static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd)
{
return;
}
-#endif /* CONFIG_USB_SUSPEND */
+#endif /* CONFIG_PM_RUNTIME */
/*-------------------------------------------------------------------------*/
#include <linux/kref.h>
#include <linux/mutex.h>
+#include <linux/serial.h>
#include <linux/sysrq.h>
#include <linux/kfifo.h>
* @bulk_out_buffers: pointers to the bulk out buffers for this port
* @write_urbs: pointers to the bulk out urbs for this port
* @write_urbs_free: status bitmap the for bulk out urbs
+ * @icount: interrupt counters
* @tx_bytes: number of bytes currently in host stack queues
* @bulk_out_endpointAddress: endpoint address for the bulk out pipe for this
* port.
* @flags: usb serial port flags
* @write_wait: a wait_queue_head_t used by the port.
- * @delta_msr_wait: modem-status-change wait queue
* @work: work queue entry for the line discipline waking up.
* @throttled: nonzero if the read urb is inactive to throttle the device
* @throttle_req: nonzero if the tty wants to throttle us
unsigned long write_urbs_free;
__u8 bulk_out_endpointAddress;
+ struct async_icount icount;
int tx_bytes;
unsigned long flags;
wait_queue_head_t write_wait;
- wait_queue_head_t delta_msr_wait;
struct work_struct work;
char throttled;
char throttle_req;
int (*tiocmget)(struct tty_struct *tty);
int (*tiocmset)(struct tty_struct *tty,
unsigned int set, unsigned int clear);
+ int (*tiocmiwait)(struct tty_struct *tty, unsigned long arg);
int (*get_icount)(struct tty_struct *tty,
struct serial_icounter_struct *icount);
/* Called by the tty layer for port level work. There may or may not
extern void usb_serial_generic_write_bulk_callback(struct urb *urb);
extern void usb_serial_generic_throttle(struct tty_struct *tty);
extern void usb_serial_generic_unthrottle(struct tty_struct *tty);
-extern void usb_serial_generic_disconnect(struct usb_serial *serial);
-extern void usb_serial_generic_release(struct usb_serial *serial);
+extern int usb_serial_generic_tiocmiwait(struct tty_struct *tty,
+ unsigned long arg);
+extern int usb_serial_generic_get_icount(struct tty_struct *tty,
+ struct serial_icounter_struct *icount);
extern int usb_serial_generic_register(void);
extern void usb_serial_generic_deregister(void);
extern int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port,
--- /dev/null
+/*
+ * USB CDC Device Management userspace API definitions
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+
+#ifndef _UAPI__LINUX_USB_CDC_WDM_H
+#define _UAPI__LINUX_USB_CDC_WDM_H
+
+/*
+ * This IOCTL is used to retrieve the wMaxCommand for the device,
+ * defining the message limit for both reading and writing.
+ *
+ * For CDC WDM functions this will be the wMaxCommand field of the
+ * Device Management Functional Descriptor.
+ */
+#define IOCTL_WDM_MAX_COMMAND _IOR('H', 0xA0, __u16)
+
+#endif /* _UAPI__LINUX_USB_CDC_WDM_H */
projects / karo-tx-linux.git / commitdiff