#include <linux/usb.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
#include "musb_core.h"
-static void tusb_source_power(struct musb *musb, int is_on);
+struct tusb6010_glue {
+ struct device *dev;
+ struct platform_device *musb;
+};
+
+static void tusb_musb_set_vbus(struct musb *musb, int is_on);
#define TUSB_REV_MAJOR(reg_val) ((reg_val >> 4) & 0xf)
#define TUSB_REV_MINOR(reg_val) (reg_val & 0xf)
return rev;
}
-static int __init tusb_print_revision(struct musb *musb)
+static int tusb_print_revision(struct musb *musb)
{
void __iomem *tbase = musb->ctrl_base;
u8 rev;
void __iomem *tbase = musb->ctrl_base;
u32 reg;
- /*
- * Keep clock active when enabled. Note that this is not tied to
- * drawing VBUS, as with OTG mA can be less than musb->min_power.
- */
- if (musb->set_clock) {
- if (mA)
- musb->set_clock(musb->clock, 1);
- else
- musb->set_clock(musb->clock, 0);
- }
-
/* tps65030 seems to consume max 100mA, with maybe 60mA available
* (measured on one board) for things other than tps and tusb.
*
* USB link is not suspended ... and tells us the relevant wakeup
* events. SW_EN for voltage is handled separately.
*/
-void tusb_allow_idle(struct musb *musb, u32 wakeup_enables)
+static void tusb_allow_idle(struct musb *musb, u32 wakeup_enables)
{
void __iomem *tbase = musb->ctrl_base;
u32 reg;
/*
* Updates cable VBUS status. Caller must take care of locking.
*/
-int musb_platform_get_vbus_status(struct musb *musb)
+static int tusb_musb_vbus_status(struct musb *musb)
{
void __iomem *tbase = musb->ctrl_base;
u32 otg_stat, prcm_mngmt;
}
/* FALLTHROUGH */
case OTG_STATE_A_IDLE:
- tusb_source_power(musb, 0);
+ tusb_musb_set_vbus(musb, 0);
default:
break;
}
* we don't want to treat that full speed J as a wakeup event.
* ... peripherals must draw only suspend current after 10 msec.
*/
-void musb_platform_try_idle(struct musb *musb, unsigned long timeout)
+static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout)
{
unsigned long default_timeout = jiffies + msecs_to_jiffies(3);
static unsigned long last_timer;
| TUSB_DEV_OTG_TIMER_ENABLE) \
: 0)
-static void tusb_source_power(struct musb *musb, int is_on)
+static void tusb_musb_set_vbus(struct musb *musb, int is_on)
{
void __iomem *tbase = musb->ctrl_base;
u32 conf, prcm, timer;
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
if (is_on) {
- if (musb->set_clock)
- musb->set_clock(musb->clock, 1);
timer = OTG_TIMER_MS(OTG_TIME_A_WAIT_VRISE);
musb->xceiv->default_a = 1;
musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
devctl &= ~MUSB_DEVCTL_SESSION;
conf &= ~TUSB_DEV_CONF_USB_HOST_MODE;
- if (musb->set_clock)
- musb->set_clock(musb->clock, 0);
}
prcm &= ~(TUSB_PRCM_MNGMT_15_SW_EN | TUSB_PRCM_MNGMT_33_SW_EN);
* and peripheral modes in non-OTG configurations by reconfiguring hardware
* and then setting musb->board_mode. For now, only support OTG mode.
*/
-int musb_platform_set_mode(struct musb *musb, u8 musb_mode)
+static int tusb_musb_set_mode(struct musb *musb, u8 musb_mode)
{
void __iomem *tbase = musb->ctrl_base;
u32 otg_stat, phy_otg_ctrl, phy_otg_ena, dev_conf;
default_a = is_host_enabled(musb);
DBG(2, "Default-%c\n", default_a ? 'A' : 'B');
musb->xceiv->default_a = default_a;
- tusb_source_power(musb, default_a);
+ tusb_musb_set_vbus(musb, default_a);
/* Don't allow idling immediately */
if (default_a)
switch (musb->xceiv->state) {
case OTG_STATE_A_IDLE:
DBG(2, "Got SRP, turning on VBUS\n");
- musb_set_vbus(musb, 1);
+ musb_platform_set_vbus(musb, 1);
/* CONNECT can wake if a_wait_bcon is set */
if (musb->a_wait_bcon != 0)
*/
if (musb->vbuserr_retry) {
musb->vbuserr_retry--;
- tusb_source_power(musb, 1);
+ tusb_musb_set_vbus(musb, 1);
} else {
musb->vbuserr_retry
= VBUSERR_RETRY_COUNT;
- tusb_source_power(musb, 0);
+ tusb_musb_set_vbus(musb, 0);
}
break;
default:
} else {
/* REVISIT report overcurrent to hub? */
ERR("vbus too slow, devctl %02x\n", devctl);
- tusb_source_power(musb, 0);
+ tusb_musb_set_vbus(musb, 0);
}
break;
case OTG_STATE_A_WAIT_BCON:
return idle_timeout;
}
-static irqreturn_t tusb_interrupt(int irq, void *__hci)
+static irqreturn_t tusb_musb_interrupt(int irq, void *__hci)
{
struct musb *musb = __hci;
void __iomem *tbase = musb->ctrl_base;
musb_writel(tbase, TUSB_INT_SRC_CLEAR,
int_src & ~TUSB_INT_MASK_RESERVED_BITS);
- musb_platform_try_idle(musb, idle_timeout);
+ tusb_musb_try_idle(musb, idle_timeout);
musb_writel(tbase, TUSB_INT_MASK, int_mask);
spin_unlock_irqrestore(&musb->lock, flags);
* REVISIT:
* - Check what is unnecessary in MGC_HdrcStart()
*/
-void musb_platform_enable(struct musb *musb)
+static void tusb_musb_enable(struct musb *musb)
{
void __iomem *tbase = musb->ctrl_base;
/*
* Disables TUSB6010. Caller must take care of locking.
*/
-void musb_platform_disable(struct musb *musb)
+static void tusb_musb_disable(struct musb *musb)
{
void __iomem *tbase = musb->ctrl_base;
* Sets up TUSB6010 CPU interface specific signals and registers
* Note: Settings optimized for OMAP24xx
*/
-static void __init tusb_setup_cpu_interface(struct musb *musb)
+static void tusb_setup_cpu_interface(struct musb *musb)
{
void __iomem *tbase = musb->ctrl_base;
musb_writel(tbase, TUSB_WAIT_COUNT, 1);
}
-static int __init tusb_start(struct musb *musb)
+static int tusb_musb_start(struct musb *musb)
{
void __iomem *tbase = musb->ctrl_base;
int ret = 0;
return -ENODEV;
}
-int __init musb_platform_init(struct musb *musb, void *board_data)
+static int tusb_musb_init(struct musb *musb)
{
struct platform_device *pdev;
struct resource *mem;
*/
musb->mregs += TUSB_BASE_OFFSET;
- ret = tusb_start(musb);
+ ret = tusb_musb_start(musb);
if (ret) {
printk(KERN_ERR "Could not start tusb6010 (%d)\n",
ret);
goto done;
}
- musb->isr = tusb_interrupt;
+ musb->isr = tusb_musb_interrupt;
- if (is_host_enabled(musb))
- musb->board_set_vbus = tusb_source_power;
if (is_peripheral_enabled(musb)) {
musb->xceiv->set_power = tusb_draw_power;
the_musb = musb;
return ret;
}
-int musb_platform_exit(struct musb *musb)
+static int tusb_musb_exit(struct musb *musb)
{
del_timer_sync(&musb_idle_timer);
the_musb = NULL;
usb_nop_xceiv_unregister();
return 0;
}
+
+static const struct musb_platform_ops tusb_ops = {
+ .init = tusb_musb_init,
+ .exit = tusb_musb_exit,
+
+ .enable = tusb_musb_enable,
+ .disable = tusb_musb_disable,
+
+ .set_mode = tusb_musb_set_mode,
+ .try_idle = tusb_musb_try_idle,
+
+ .vbus_status = tusb_musb_vbus_status,
+ .set_vbus = tusb_musb_set_vbus,
+};
+
+static u64 tusb_dmamask = DMA_BIT_MASK(32);
+
+static int __init tusb_probe(struct platform_device *pdev)
+{
+ struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
+ struct platform_device *musb;
+ struct tusb6010_glue *glue;
+
+ int ret = -ENOMEM;
+
+ glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+ if (!glue) {
+ dev_err(&pdev->dev, "failed to allocate glue context\n");
+ goto err0;
+ }
+
+ musb = platform_device_alloc("musb-hdrc", -1);
+ if (!musb) {
+ dev_err(&pdev->dev, "failed to allocate musb device\n");
+ goto err1;
+ }
+
+ musb->dev.parent = &pdev->dev;
+ musb->dev.dma_mask = &tusb_dmamask;
+ musb->dev.coherent_dma_mask = tusb_dmamask;
+
+ glue->dev = &pdev->dev;
+ glue->musb = musb;
+
+ pdata->platform_ops = &tusb_ops;
+
+ platform_set_drvdata(pdev, glue);
+
+ ret = platform_device_add_resources(musb, pdev->resource,
+ pdev->num_resources);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add resources\n");
+ goto err2;
+ }
+
+ ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add platform_data\n");
+ goto err2;
+ }
+
+ ret = platform_device_add(musb);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register musb device\n");
+ goto err1;
+ }
+
+ return 0;
+
+err2:
+ platform_device_put(musb);
+
+err1:
+ kfree(glue);
+
+err0:
+ return ret;
+}
+
+static int __exit tusb_remove(struct platform_device *pdev)
+{
+ struct tusb6010_glue *glue = platform_get_drvdata(pdev);
+
+ platform_device_del(glue->musb);
+ platform_device_put(glue->musb);
+ kfree(glue);
+
+ return 0;
+}
+
+static struct platform_driver tusb_driver = {
+ .remove = __exit_p(tusb_remove),
+ .driver = {
+ .name = "musb-tusb",
+ },
+};
+
+MODULE_DESCRIPTION("TUSB6010 MUSB Glue Layer");
+MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
+MODULE_LICENSE("GPL v2");
+
+static int __init tusb_init(void)
+{
+ return platform_driver_probe(&tusb_driver, tusb_probe);
+}
+subsys_initcall(tusb_init);
+
+static void __exit tusb_exit(void)
+{
+ platform_driver_unregister(&tusb_driver);
+}
+module_exit(tusb_exit);
projects / mv-sheeva.git / blobdiff