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usb: dwc3: adapt to use dr_mode device tree helper 

This patch adapts the dwc3 to use the device tree helper
"of_usb_get_dr_mode" for the mode of operation of the dwc3 instance
being probed.

[ balbi@ti.com : make of_usb_get_dr_mode() conditional on
	dev->of_node and let pdata pass dr_mode too ]

Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Ruchika Kharwar <ruchika@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ruchika Kharwar 2013-07-06 07:52:49 -05:00 committed by Felipe Balbi
parent 51e563e3c1
commit a45c82b84c
3 changed files with 43 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
drivers/usb/dwc3/core.c
View File

@ -37,6 +37,7 @@
#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"
@ -359,8 +360,6 @@ static int dwc3_probe(struct platform_device *pdev)
void __iomem *regs;
void *mem;
u8 mode;
mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
if (!mem) {
dev_err(dev, "not enough memory\n");
@ -415,6 +414,7 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->usb3_phy = devm_usb_get_phy_by_phandle(dev, "usb-phy", 1);
dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
dwc->dr_mode = of_usb_get_dr_mode(node);
} else {
dwc->maximum_speed = pdata->maximum_speed;
@ -422,6 +422,7 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
dwc->needs_fifo_resize = pdata->tx_fifo_resize;
dwc->dr_mode = pdata->dr_mode;
}
/* default to superspeed if no maximum_speed passed */
@ -498,14 +499,15 @@ static int dwc3_probe(struct platform_device *pdev)
}
if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
mode = DWC3_MODE_HOST;
dwc->dr_mode = USB_DR_MODE_HOST;
else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
mode = DWC3_MODE_DEVICE;
else
mode = DWC3_MODE_DRD;
dwc->dr_mode = USB_DR_MODE_PERIPHERAL;
switch (mode) {
case DWC3_MODE_DEVICE:
if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
dwc->dr_mode = USB_DR_MODE_OTG;
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
ret = dwc3_gadget_init(dwc);
if (ret) {
@ -513,7 +515,7 @@ static int dwc3_probe(struct platform_device *pdev)
goto err2;
}
break;
case DWC3_MODE_HOST:
case USB_DR_MODE_HOST:
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
ret = dwc3_host_init(dwc);
if (ret) {
@ -521,7 +523,7 @@ static int dwc3_probe(struct platform_device *pdev)
goto err2;
}
break;
case DWC3_MODE_DRD:
case USB_DR_MODE_OTG:
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
ret = dwc3_host_init(dwc);
if (ret) {
@ -536,10 +538,9 @@ static int dwc3_probe(struct platform_device *pdev)
}
break;
default:
dev_err(dev, "Unsupported mode of operation %d\n", mode);
dev_err(dev, "Unsupported mode of operation %d\n", dwc->dr_mode);
goto err2;
}
dwc->mode = mode;
ret = dwc3_debugfs_init(dwc);
if (ret) {
@ -552,14 +553,14 @@ static int dwc3_probe(struct platform_device *pdev)
return 0;
err3:
switch (mode) {
case DWC3_MODE_DEVICE:
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
dwc3_gadget_exit(dwc);
break;
case DWC3_MODE_HOST:
case USB_DR_MODE_HOST:
dwc3_host_exit(dwc);
break;
case DWC3_MODE_DRD:
case USB_DR_MODE_OTG:
dwc3_host_exit(dwc);
dwc3_gadget_exit(dwc);
break;
@ -592,14 +593,14 @@ static int dwc3_remove(struct platform_device *pdev)
dwc3_debugfs_exit(dwc);
switch (dwc->mode) {
case DWC3_MODE_DEVICE:
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
dwc3_gadget_exit(dwc);
break;
case DWC3_MODE_HOST:
case USB_DR_MODE_HOST:
dwc3_host_exit(dwc);
break;
case DWC3_MODE_DRD:
case USB_DR_MODE_OTG:
dwc3_host_exit(dwc);
dwc3_gadget_exit(dwc);
break;
@ -623,12 +624,12 @@ static int dwc3_prepare(struct device *dev)
spin_lock_irqsave(&dwc->lock, flags);
switch (dwc->mode) {
case DWC3_MODE_DEVICE:
case DWC3_MODE_DRD:
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
case USB_DR_MODE_OTG:
dwc3_gadget_prepare(dwc);
/* FALLTHROUGH */
case DWC3_MODE_HOST:
case USB_DR_MODE_HOST:
default:
dwc3_event_buffers_cleanup(dwc);
break;
@ -646,12 +647,12 @@ static void dwc3_complete(struct device *dev)
spin_lock_irqsave(&dwc->lock, flags);
switch (dwc->mode) {
case DWC3_MODE_DEVICE:
case DWC3_MODE_DRD:
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
case USB_DR_MODE_OTG:
dwc3_gadget_complete(dwc);
/* FALLTHROUGH */
case DWC3_MODE_HOST:
case USB_DR_MODE_HOST:
default:
dwc3_event_buffers_setup(dwc);
break;
@ -667,12 +668,12 @@ static int dwc3_suspend(struct device *dev)
spin_lock_irqsave(&dwc->lock, flags);
switch (dwc->mode) {
case DWC3_MODE_DEVICE:
case DWC3_MODE_DRD:
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
case USB_DR_MODE_OTG:
dwc3_gadget_suspend(dwc);
/* FALLTHROUGH */
case DWC3_MODE_HOST:
case USB_DR_MODE_HOST:
default:
/* do nothing */
break;
@ -700,12 +701,12 @@ static int dwc3_resume(struct device *dev)
dwc3_writel(dwc->regs, DWC3_GCTL, dwc->gctl);
switch (dwc->mode) {
case DWC3_MODE_DEVICE:
case DWC3_MODE_DRD:
switch (dwc->dr_mode) {
case USB_DR_MODE_PERIPHERAL:
case USB_DR_MODE_OTG:
dwc3_gadget_resume(dwc);
/* FALLTHROUGH */
case DWC3_MODE_HOST:
case USB_DR_MODE_HOST:
default:
/* do nothing */
break;

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

@ -29,6 +29,7 @@
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
/* Global constants */
#define DWC3_EP0_BOUNCE_SIZE 512
@ -545,11 +546,6 @@ struct dwc3_hwparams {
/* 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
#define DWC3_MDWIDTH(n) (((n) & 0xff00) >> 8)
/* HWPARAMS1 */
@ -611,7 +607,7 @@ struct dwc3_scratchpad_array {
* @u1u2: only used on revisions <1.83a for workaround
* @maximum_speed: maximum speed requested (mainly for testing purposes)
* @revision: revision register contents
* @mode: mode of operation
* @dr_mode: requested mode of operation
* @usb2_phy: pointer to USB2 PHY
* @usb3_phy: pointer to USB3 PHY
* @dcfg: saved contents of DCFG register
@ -669,6 +665,8 @@ struct dwc3 {
void __iomem *regs;
size_t regs_size;
enum usb_dr_mode dr_mode;
/* used for suspend/resume */
u32 dcfg;
u32 gctl;
@ -677,7 +675,6 @@ struct dwc3 {
u32 u1u2;
u32 maximum_speed;
u32 revision;
u32 mode;
#define DWC3_REVISION_173A 0x5533173a
#define DWC3_REVISION_175A 0x5533175a

2
drivers/usb/dwc3/platform_data.h
View File

@ -18,8 +18,10 @@
*/
#include <linux/usb/ch9.h>
#include <linux/usb/otg.h>
struct dwc3_platform_data {
enum usb_device_speed maximum_speed;
enum usb_dr_mode dr_mode;
bool tx_fifo_resize;
};