* SPDX-License-Identifier: GPL-2.0
*/
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
+#include <common.h>
+#include <malloc.h>
+#include <dwc3-uboot.h>
+#include <asm/dma-mapping.h>
#include <linux/ioport.h>
-#include <linux/io.h>
-#include <linux/list.h>
-#include <linux/delay.h>
-#include <linux/dma-mapping.h>
-#include <linux/of.h>
-#include <linux/acpi.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
-#include <linux/usb/of.h>
-#include <linux/usb/otg.h>
-#include "platform_data.h"
#include "core.h"
#include "gadget.h"
#include "io.h"
-#include "debug.h"
+#include "linux-compat.h"
+static LIST_HEAD(dwc3_list);
/* -------------------------------------------------------------------------- */
void dwc3_set_mode(struct dwc3 *dwc, u32 mode)
static int dwc3_core_soft_reset(struct dwc3 *dwc)
{
u32 reg;
- int ret;
/* Before Resetting PHY, put Core in Reset */
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
- usb_phy_init(dwc->usb2_phy);
- usb_phy_init(dwc->usb3_phy);
- ret = phy_init(dwc->usb2_generic_phy);
- if (ret < 0)
- return ret;
-
- ret = phy_init(dwc->usb3_generic_phy);
- if (ret < 0) {
- phy_exit(dwc->usb2_generic_phy);
- return ret;
- }
mdelay(100);
/* Clear USB3 PHY reset */
static void dwc3_free_one_event_buffer(struct dwc3 *dwc,
struct dwc3_event_buffer *evt)
{
- dma_free_coherent(dwc->dev, evt->length, evt->buf, evt->dma);
+ dma_free_coherent(evt->buf);
}
/**
evt->dwc = dwc;
evt->length = length;
- evt->buf = dma_alloc_coherent(dwc->dev, length,
- &evt->dma, GFP_KERNEL);
+ evt->buf = dma_alloc_coherent(length,
+ (unsigned long *)&evt->dma);
if (!evt->buf)
return ERR_PTR(-ENOMEM);
if (!dwc->nr_scratch)
return 0;
- /* should never fall here */
- if (!WARN_ON(dwc->scratchbuf))
- return 0;
-
- scratch_addr = dma_map_single(dwc->dev, dwc->scratchbuf,
- dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE,
- DMA_BIDIRECTIONAL);
+ scratch_addr = dma_map_single(dwc->scratchbuf,
+ dwc->nr_scratch * DWC3_SCRATCHBUF_SIZE,
+ DMA_BIDIRECTIONAL);
if (dma_mapping_error(dwc->dev, scratch_addr)) {
dev_err(dwc->dev, "failed to map scratch buffer\n");
ret = -EFAULT;
return 0;
err1:
- dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch *
- DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
+ dma_unmap_single((void *)dwc->scratch_addr, dwc->nr_scratch *
+ DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
err0:
return ret;
if (!dwc->nr_scratch)
return;
- /* should never fall here */
- if (!WARN_ON(dwc->scratchbuf))
- return;
-
- dma_unmap_single(dwc->dev, dwc->scratch_addr, dwc->nr_scratch *
- DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
+ dma_unmap_single((void *)dwc->scratch_addr, dwc->nr_scratch *
+ DWC3_SCRATCHBUF_SIZE, DMA_BIDIRECTIONAL);
kfree(dwc->scratchbuf);
}
}
dwc->revision = reg;
- /*
- * Write Linux Version Code to our GUID register so it's easy to figure
- * out which kernel version a bug was found.
- */
- dwc3_writel(dwc->regs, DWC3_GUID, LINUX_VERSION_CODE);
-
/* Handle USB2.0-only core configuration */
if (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==
DWC3_GHWPARAMS3_SSPHY_IFC_DIS) {
}
/* issue device SoftReset too */
- timeout = jiffies + msecs_to_jiffies(500);
+ timeout = 5000;
dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST);
- do {
+ while (timeout--) {
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
if (!(reg & DWC3_DCTL_CSFTRST))
break;
+ };
- if (time_after(jiffies, timeout)) {
- dev_err(dwc->dev, "Reset Timed Out\n");
- ret = -ETIMEDOUT;
- goto err0;
- }
-
- cpu_relax();
- } while (true);
+ if (!timeout) {
+ dev_err(dwc->dev, "Reset Timed Out\n");
+ ret = -ETIMEDOUT;
+ goto err0;
+ }
ret = dwc3_core_soft_reset(dwc);
if (ret)
dwc->is_fpga = true;
}
- WARN_ONCE(dwc->disable_scramble_quirk && !dwc->is_fpga,
- "disable_scramble cannot be used on non-FPGA builds\n");
+ if(dwc->disable_scramble_quirk && !dwc->is_fpga)
+ WARN(true,
+ "disable_scramble cannot be used on non-FPGA builds\n");
if (dwc->disable_scramble_quirk && dwc->is_fpga)
reg |= DWC3_GCTL_DISSCRAMBLE;
ret = dwc3_alloc_scratch_buffers(dwc);
if (ret)
- goto err1;
+ goto err0;
ret = dwc3_setup_scratch_buffers(dwc);
if (ret)
- goto err2;
+ goto err1;
return 0;
-err2:
- dwc3_free_scratch_buffers(dwc);
-
err1:
- usb_phy_shutdown(dwc->usb2_phy);
- usb_phy_shutdown(dwc->usb3_phy);
- phy_exit(dwc->usb2_generic_phy);
- phy_exit(dwc->usb3_generic_phy);
+ dwc3_free_scratch_buffers(dwc);
err0:
return ret;
static void dwc3_core_exit(struct dwc3 *dwc)
{
dwc3_free_scratch_buffers(dwc);
- usb_phy_shutdown(dwc->usb2_phy);
- usb_phy_shutdown(dwc->usb3_phy);
- phy_exit(dwc->usb2_generic_phy);
- phy_exit(dwc->usb3_generic_phy);
-}
-
-static int dwc3_core_get_phy(struct dwc3 *dwc)
-{
- struct device *dev = dwc->dev;
- struct device_node *node = dev->of_node;
- int ret;
-
- if (node) {
- dwc->usb2_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 0);
- dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);
- } else {
- dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
- dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
- }
-
- if (IS_ERR(dwc->usb2_phy)) {
- ret = PTR_ERR(dwc->usb2_phy);
- if (ret == -ENXIO || ret == -ENODEV) {
- dwc->usb2_phy = NULL;
- } else if (ret == -EPROBE_DEFER) {
- return ret;
- } else {
- dev_err(dev, "no usb2 phy configured\n");
- return ret;
- }
- }
-
- if (IS_ERR(dwc->usb3_phy)) {
- ret = PTR_ERR(dwc->usb3_phy);
- if (ret == -ENXIO || ret == -ENODEV) {
- dwc->usb3_phy = NULL;
- } else if (ret == -EPROBE_DEFER) {
- return ret;
- } else {
- dev_err(dev, "no usb3 phy configured\n");
- return ret;
- }
- }
-
- dwc->usb2_generic_phy = devm_phy_get(dev, "usb2-phy");
- if (IS_ERR(dwc->usb2_generic_phy)) {
- ret = PTR_ERR(dwc->usb2_generic_phy);
- if (ret == -ENOSYS || ret == -ENODEV) {
- dwc->usb2_generic_phy = NULL;
- } else if (ret == -EPROBE_DEFER) {
- return ret;
- } else {
- dev_err(dev, "no usb2 phy configured\n");
- return ret;
- }
- }
-
- dwc->usb3_generic_phy = devm_phy_get(dev, "usb3-phy");
- if (IS_ERR(dwc->usb3_generic_phy)) {
- ret = PTR_ERR(dwc->usb3_generic_phy);
- if (ret == -ENOSYS || ret == -ENODEV) {
- dwc->usb3_generic_phy = NULL;
- } else if (ret == -EPROBE_DEFER) {
- return ret;
- } else {
- dev_err(dev, "no usb3 phy configured\n");
- return ret;
- }
- }
-
- return 0;
}
static int dwc3_core_init_mode(struct dwc3 *dwc)
{
- struct device *dev = dwc->dev;
int ret;
switch (dwc->dr_mode) {
#define DWC3_ALIGN_MASK (16 - 1)
-static int dwc3_probe(struct platform_device *pdev)
+/**
+ * dwc3_uboot_init - dwc3 core uboot initialization code
+ * @dwc3_dev: struct dwc3_device containing initialization data
+ *
+ * Entry point for dwc3 driver (equivalent to dwc3_probe in linux
+ * kernel driver). Pointer to dwc3_device should be passed containing
+ * base address and other initialization data. Returns '0' on success and
+ * a negative value on failure.
+ *
+ * Generally called from board_usb_init() implemented in board file.
+ */
+int dwc3_uboot_init(struct dwc3_device *dwc3_dev)
{
- struct device *dev = &pdev->dev;
- struct dwc3_platform_data *pdata = dev_get_platdata(dev);
- struct device_node *node = dev->of_node;
- struct resource *res;
struct dwc3 *dwc;
+ struct device *dev;
u8 lpm_nyet_threshold;
u8 tx_de_emphasis;
u8 hird_threshold;
int ret;
- void __iomem *regs;
void *mem;
mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
dwc->mem = mem;
- dwc->dev = dev;
-
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!res) {
- dev_err(dev, "missing IRQ\n");
- return -ENODEV;
- }
- dwc->xhci_resources[1].start = res->start;
- dwc->xhci_resources[1].end = res->end;
- dwc->xhci_resources[1].flags = res->flags;
- dwc->xhci_resources[1].name = res->name;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(dev, "missing memory resource\n");
- return -ENODEV;
- }
-
- dwc->xhci_resources[0].start = res->start;
- dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
- DWC3_XHCI_REGS_END;
- dwc->xhci_resources[0].flags = res->flags;
- dwc->xhci_resources[0].name = res->name;
-
- res->start += DWC3_GLOBALS_REGS_START;
-
- /*
- * Request memory region but exclude xHCI regs,
- * since it will be requested by the xhci-plat driver.
- */
- regs = devm_ioremap_resource(dev, res);
- if (IS_ERR(regs))
- return PTR_ERR(regs);
- dwc->regs = regs;
- dwc->regs_size = resource_size(res);
- /*
- * restore res->start back to its original value so that,
- * in case the probe is deferred, we don't end up getting error in
- * request the memory region the next time probe is called.
- */
- res->start -= DWC3_GLOBALS_REGS_START;
+ dwc->regs = (int *)(dwc3_dev->base + DWC3_GLOBALS_REGS_START);
/* default to highest possible threshold */
lpm_nyet_threshold = 0xff;
*/
hird_threshold = 12;
- if (node) {
- dwc->maximum_speed = of_usb_get_maximum_speed(node);
- dwc->has_lpm_erratum = of_property_read_bool(node,
- "snps,has-lpm-erratum");
- of_property_read_u8(node, "snps,lpm-nyet-threshold",
- &lpm_nyet_threshold);
- dwc->is_utmi_l1_suspend = of_property_read_bool(node,
- "snps,is-utmi-l1-suspend");
- of_property_read_u8(node, "snps,hird-threshold",
- &hird_threshold);
-
- dwc->needs_fifo_resize = of_property_read_bool(node,
- "tx-fifo-resize");
- dwc->dr_mode = of_usb_get_dr_mode(node);
-
- dwc->disable_scramble_quirk = of_property_read_bool(node,
- "snps,disable_scramble_quirk");
- dwc->u2exit_lfps_quirk = of_property_read_bool(node,
- "snps,u2exit_lfps_quirk");
- dwc->u2ss_inp3_quirk = of_property_read_bool(node,
- "snps,u2ss_inp3_quirk");
- dwc->req_p1p2p3_quirk = of_property_read_bool(node,
- "snps,req_p1p2p3_quirk");
- dwc->del_p1p2p3_quirk = of_property_read_bool(node,
- "snps,del_p1p2p3_quirk");
- dwc->del_phy_power_chg_quirk = of_property_read_bool(node,
- "snps,del_phy_power_chg_quirk");
- dwc->lfps_filter_quirk = of_property_read_bool(node,
- "snps,lfps_filter_quirk");
- dwc->rx_detect_poll_quirk = of_property_read_bool(node,
- "snps,rx_detect_poll_quirk");
- dwc->dis_u3_susphy_quirk = of_property_read_bool(node,
- "snps,dis_u3_susphy_quirk");
- dwc->dis_u2_susphy_quirk = of_property_read_bool(node,
- "snps,dis_u2_susphy_quirk");
-
- dwc->tx_de_emphasis_quirk = of_property_read_bool(node,
- "snps,tx_de_emphasis_quirk");
- of_property_read_u8(node, "snps,tx_de_emphasis",
- &tx_de_emphasis);
- } else if (pdata) {
- dwc->maximum_speed = pdata->maximum_speed;
- dwc->has_lpm_erratum = pdata->has_lpm_erratum;
- if (pdata->lpm_nyet_threshold)
- lpm_nyet_threshold = pdata->lpm_nyet_threshold;
- dwc->is_utmi_l1_suspend = pdata->is_utmi_l1_suspend;
- if (pdata->hird_threshold)
- hird_threshold = pdata->hird_threshold;
-
- dwc->needs_fifo_resize = pdata->tx_fifo_resize;
- dwc->dr_mode = pdata->dr_mode;
-
- dwc->disable_scramble_quirk = pdata->disable_scramble_quirk;
- dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk;
- dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk;
- dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk;
- dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
- dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk;
- dwc->lfps_filter_quirk = pdata->lfps_filter_quirk;
- dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
- dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk;
- dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk;
-
- dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk;
- if (pdata->tx_de_emphasis)
- tx_de_emphasis = pdata->tx_de_emphasis;
- }
+ dwc->maximum_speed = dwc3_dev->maximum_speed;
+ dwc->has_lpm_erratum = dwc3_dev->has_lpm_erratum;
+ if (dwc3_dev->lpm_nyet_threshold)
+ lpm_nyet_threshold = dwc3_dev->lpm_nyet_threshold;
+ dwc->is_utmi_l1_suspend = dwc3_dev->is_utmi_l1_suspend;
+ if (dwc3_dev->hird_threshold)
+ hird_threshold = dwc3_dev->hird_threshold;
+
+ dwc->needs_fifo_resize = dwc3_dev->tx_fifo_resize;
+ dwc->dr_mode = dwc3_dev->dr_mode;
+
+ dwc->disable_scramble_quirk = dwc3_dev->disable_scramble_quirk;
+ dwc->u2exit_lfps_quirk = dwc3_dev->u2exit_lfps_quirk;
+ dwc->u2ss_inp3_quirk = dwc3_dev->u2ss_inp3_quirk;
+ dwc->req_p1p2p3_quirk = dwc3_dev->req_p1p2p3_quirk;
+ dwc->del_p1p2p3_quirk = dwc3_dev->del_p1p2p3_quirk;
+ dwc->del_phy_power_chg_quirk = dwc3_dev->del_phy_power_chg_quirk;
+ dwc->lfps_filter_quirk = dwc3_dev->lfps_filter_quirk;
+ dwc->rx_detect_poll_quirk = dwc3_dev->rx_detect_poll_quirk;
+ dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk;
+ dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk;
+
+ dwc->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk;
+ if (dwc3_dev->tx_de_emphasis)
+ tx_de_emphasis = dwc3_dev->tx_de_emphasis;
/* default to superspeed if no maximum_speed passed */
if (dwc->maximum_speed == USB_SPEED_UNKNOWN)
dwc->hird_threshold = hird_threshold
| (dwc->is_utmi_l1_suspend << 4);
- ret = dwc3_core_get_phy(dwc);
- if (ret)
- return ret;
-
- spin_lock_init(&dwc->lock);
- platform_set_drvdata(pdev, dwc);
-
- if (!dev->dma_mask) {
- dev->dma_mask = dev->parent->dma_mask;
- dev->dma_parms = dev->parent->dma_parms;
- dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask);
- }
+ dwc->index = dwc3_dev->index;
dwc3_cache_hwparams(dwc);
ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
if (ret) {
dev_err(dwc->dev, "failed to allocate event buffers\n");
- ret = -ENOMEM;
- goto err0;
+ return -ENOMEM;
}
if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
goto err0;
}
- usb_phy_set_suspend(dwc->usb2_phy, 0);
- usb_phy_set_suspend(dwc->usb3_phy, 0);
- ret = phy_power_on(dwc->usb2_generic_phy);
- if (ret < 0)
- goto err1;
-
- ret = phy_power_on(dwc->usb3_generic_phy);
- if (ret < 0)
- goto err_usb2phy_power;
-
ret = dwc3_event_buffers_setup(dwc);
if (ret) {
dev_err(dwc->dev, "failed to setup event buffers\n");
- goto err_usb3phy_power;
+ goto err1;
}
ret = dwc3_core_init_mode(dwc);
if (ret)
goto err2;
- ret = dwc3_debugfs_init(dwc);
- if (ret) {
- dev_err(dev, "failed to initialize debugfs\n");
- goto err3;
- }
+ list_add_tail(&dwc->list, &dwc3_list);
return 0;
-err3:
- dwc3_core_exit_mode(dwc);
-
err2:
dwc3_event_buffers_cleanup(dwc);
-err_usb3phy_power:
- phy_power_off(dwc->usb3_generic_phy);
-
-err_usb2phy_power:
- phy_power_off(dwc->usb2_generic_phy);
-
err1:
- usb_phy_set_suspend(dwc->usb2_phy, 1);
- usb_phy_set_suspend(dwc->usb3_phy, 1);
dwc3_core_exit(dwc);
err0:
return ret;
}
-static int dwc3_remove(struct platform_device *pdev)
+/**
+ * dwc3_uboot_exit - dwc3 core uboot cleanup code
+ * @index: index of this controller
+ *
+ * Performs cleanup of memory allocated in dwc3_uboot_init and other misc
+ * cleanups (equivalent to dwc3_remove in linux). index of _this_ controller
+ * should be passed and should match with the index passed in
+ * dwc3_device during init.
+ *
+ * Generally called from board file.
+ */
+void dwc3_uboot_exit(int index)
{
- struct dwc3 *dwc = platform_get_drvdata(pdev);
-
- dwc3_debugfs_exit(dwc);
- dwc3_core_exit_mode(dwc);
- dwc3_event_buffers_cleanup(dwc);
- dwc3_free_event_buffers(dwc);
-
- usb_phy_set_suspend(dwc->usb2_phy, 1);
- usb_phy_set_suspend(dwc->usb3_phy, 1);
- phy_power_off(dwc->usb2_generic_phy);
- phy_power_off(dwc->usb3_generic_phy);
-
- dwc3_core_exit(dwc);
-
- return 0;
+ struct dwc3 *dwc;
+
+ list_for_each_entry(dwc, &dwc3_list, list) {
+ if (dwc->index != index)
+ continue;
+
+ dwc3_core_exit_mode(dwc);
+ dwc3_event_buffers_cleanup(dwc);
+ dwc3_free_event_buffers(dwc);
+ dwc3_core_exit(dwc);
+ list_del(&dwc->list);
+ kfree(dwc->mem);
+ break;
+ }
}
-#ifdef CONFIG_OF
-static const struct of_device_id of_dwc3_match[] = {
- {
- .compatible = "snps,dwc3"
- },
- {
- .compatible = "synopsys,dwc3"
- },
- { },
-};
-MODULE_DEVICE_TABLE(of, of_dwc3_match);
-#endif
-
-#ifdef CONFIG_ACPI
-
-#define ACPI_ID_INTEL_BSW "808622B7"
-
-static const struct acpi_device_id dwc3_acpi_match[] = {
- { ACPI_ID_INTEL_BSW, 0 },
- { },
-};
-MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match);
-#endif
-
-static struct platform_driver dwc3_driver = {
- .probe = dwc3_probe,
- .remove = dwc3_remove,
- .driver = {
- .name = "dwc3",
- .of_match_table = of_match_ptr(of_dwc3_match),
- .acpi_match_table = ACPI_PTR(dwc3_acpi_match),
- },
-};
-
-module_platform_driver(dwc3_driver);
-
MODULE_ALIAS("platform:dwc3");
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("GPL v2");
projects / karo-tx-uboot.git / blobdiff