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usb: dwc3: fetch mode of operation from HW

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There's no need to add driver_data for something
we can fetch from HW.

This also makes our id_table unnecessary - at least
for now -, so we also remove it on the same patch.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2011-10-12 10:44:56 +03:00
parent 9f622b2a40
commit 0949e99b05
4 changed files with 46 additions and 28 deletions
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57
drivers/usb/dwc3/core.c
View file

@ -325,15 +325,17 @@ static void dwc3_core_exit(struct dwc3 *dwc)
static int __devinit dwc3_probe(struct platform_device *pdev)
{
const struct platform_device_id *id = platform_get_device_id(pdev);
struct resource *res;
struct dwc3 *dwc;
void __iomem *regs;
unsigned int features = id->driver_data;
int ret = -ENOMEM;
int irq;
void __iomem *regs;
void *mem;
u8 mode;
mem = kzalloc(sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
if (!mem) {
dev_err(&pdev->dev, "not enough memory\n");
@ -396,13 +398,22 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
goto err3;
}
if (features & DWC3_HAS_PERIPHERAL) {
mode = DWC3_MODE(dwc->hwparams.hwparams0);
switch (mode) {
case DWC3_MODE_DRD:
case DWC3_MODE_DEVICE:
ret = dwc3_gadget_init(dwc);
if (ret) {
dev_err(&pdev->dev, "failed to initialized gadget\n");
dev_err(&pdev->dev, "failed to initialize gadget\n");
goto err4;
}
break;
default:
dev_err(&pdev->dev, "Unsupported mode of operation %d\n", mode);
goto err4;
}
dwc->mode = mode;
ret = dwc3_debugfs_init(dwc);
if (ret) {
@ -415,8 +426,15 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
return 0;
err5:
if (features & DWC3_HAS_PERIPHERAL)
switch (mode) {
case DWC3_MODE_DRD:
case DWC3_MODE_DEVICE:
dwc3_gadget_exit(dwc);
break;
default:
/* do nothing */
break;
}
err4:
dwc3_core_exit(dwc);
@ -436,10 +454,8 @@ err0:
static int __devexit dwc3_remove(struct platform_device *pdev)
{
const struct platform_device_id *id = platform_get_device_id(pdev);
struct dwc3 *dwc = platform_get_drvdata(pdev);
struct resource *res;
unsigned int features = id->driver_data;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@ -448,8 +464,15 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
dwc3_debugfs_exit(dwc);
if (features & DWC3_HAS_PERIPHERAL)
switch (dwc->mode) {
case DWC3_MODE_DRD:
case DWC3_MODE_DEVICE:
dwc3_gadget_exit(dwc);
break;
default:
/* do nothing */
break;
}
dwc3_core_exit(dwc);
release_mem_region(res->start, resource_size(res));
@ -459,28 +482,12 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
return 0;
}
static const struct platform_device_id dwc3_id_table[] __devinitconst = {
{
.name = "dwc3-omap",
.driver_data = (DWC3_HAS_PERIPHERAL
| DWC3_HAS_XHCI
| DWC3_HAS_OTG),
},
{
.name = "dwc3-pci",
.driver_data = DWC3_HAS_PERIPHERAL,
},
{ }, /* Terminating Entry */
};
MODULE_DEVICE_TABLE(platform, dwc3_id_table);
static struct platform_driver dwc3_driver = {
.probe = dwc3_probe,
.remove = __devexit_p(dwc3_remove),
.driver = {
.name = "dwc3",
},
.id_table = dwc3_id_table,
};
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");

11
drivers/usb/dwc3/core.h
View file

@ -536,6 +536,15 @@ struct dwc3_hwparams {
u32 hwparams8;
};
/* HWPARAMS0 */
#define DWC3_MODE(n) ((n) & 0x7)
#define DWC3_MODE_DEVICE 0
#define DWC3_MODE_HOST 1
#define DWC3_MODE_DRD 2
#define DWC3_MODE_HUB 3
/* HWPARAMS1 */
#define DWC3_NUM_INT(n) (((n) & (0x3f << 15)) >> 15)
/**
@ -560,6 +569,7 @@ struct dwc3_hwparams {
* @num_event_buffers: calculated number of event buffers
* @maximum_speed: maximum speed requested (mainly for testing purposes)
* @revision: revision register contents
* @mode: mode of operation
* @is_selfpowered: true when we are selfpowered
* @three_stage_setup: set if we perform a three phase setup
* @ep0_status_pending: ep0 status response without a req is pending
@ -602,6 +612,7 @@ struct dwc3 {
u32 num_event_buffers;
u32 maximum_speed;
u32 revision;
u32 mode;
#define DWC3_REVISION_173A 0x5533173a
#define DWC3_REVISION_175A 0x5533175a

2
drivers/usb/dwc3/dwc3-omap.c
View file

@ -236,7 +236,7 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
goto err1;
}
dwc3 = platform_device_alloc("dwc3-omap", -1);
dwc3 = platform_device_alloc("dwc3", -1);
if (!dwc3) {
dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
goto err2;

4
drivers/usb/dwc3/dwc3-pci.c
View file

@ -118,7 +118,7 @@ static int __devinit dwc3_pci_probe(struct pci_dev *pci,
if (devid < 0)
goto err2;
dwc3 = platform_device_alloc("dwc3-pci", devid);
dwc3 = platform_device_alloc("dwc3", devid);
if (!dwc3) {
dev_err(&pci->dev, "couldn't allocate dwc3 device\n");
goto err3;
@ -196,7 +196,7 @@ static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
MODULE_DEVICE_TABLE(pci, dwc3_pci_id_table);
static struct pci_driver dwc3_pci_driver = {
.name = "pci-dwc3",
.name = "dwc3-pci",
.id_table = dwc3_pci_id_table,
.probe = dwc3_pci_probe,
.remove = __devexit_p(dwc3_pci_remove),