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usb: dwc3: add basic PHY support 

this will let us control PHYs on platforms which
need them.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2012-07-19 14:09:48 +03:00
parent d720f057fd
commit 51e1e7bcef
2 changed files with 20 additions and 0 deletions
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15
drivers/usb/dwc3/core.c
View File

@ -50,6 +50,7 @@
#include <linux/dma-mapping.h>
#include <linux/of.h>
#include <linux/usb/otg.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@ -136,6 +137,8 @@ static void dwc3_core_soft_reset(struct dwc3 *dwc)
reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
usb_phy_init(dwc->usb2_phy);
usb_phy_init(dwc->usb3_phy);
mdelay(100);
/* Clear USB3 PHY reset */
@ -465,6 +468,18 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
return -ENOMEM;
}
dwc->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
if (IS_ERR_OR_NULL(dwc->usb2_phy)) {
dev_err(dev, "no usb2 phy configured\n");
return -EPROBE_DEFER;
}
dwc->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
if (IS_ERR_OR_NULL(dwc->usb3_phy)) {
dev_err(dev, "no usb3 phy configured\n");
return -EPROBE_DEFER;
}
spin_lock_init(&dwc->lock);
platform_set_drvdata(pdev, dwc);

5
drivers/usb/dwc3/core.h
View File

@ -624,6 +624,8 @@ struct dwc3_scratchpad_array {
* @maximum_speed: maximum speed requested (mainly for testing purposes)
* @revision: revision register contents
* @mode: mode of operation
* @usb2_phy: pointer to USB2 PHY
* @usb3_phy: pointer to USB3 PHY
* @is_selfpowered: true when we are selfpowered
* @three_stage_setup: set if we perform a three phase setup
* @ep0_bounced: true when we used bounce buffer
@ -667,6 +669,9 @@ struct dwc3 {
struct usb_gadget gadget;
struct usb_gadget_driver *gadget_driver;
struct usb_phy *usb2_phy;
struct usb_phy *usb3_phy;
void __iomem *regs;
size_t regs_size;