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--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -252,6 +252,37 @@ int ehci_reset(struct ehci_hcd *ehci)
command |= CMD_RESET;
dbg_cmd (ehci, "reset", command);
ehci_writel(ehci, command, &ehci->regs->command);
+
+ if (ehci->qca_force_host_mode) {
+ u32 usbmode;
+
+ udelay(1000);
+
+ usbmode = ehci_readl(ehci, &ehci->regs->usbmode);
+ usbmode |= USBMODE_CM_HC | (1 << 4);
+ ehci_writel(ehci, usbmode, &ehci->regs->usbmode);
+
+ ehci_dbg(ehci, "forced host mode, usbmode: %08x\n",
+ ehci_readl(ehci, &ehci->regs->usbmode));
+ }
+
+ if (ehci->qca_force_16bit_ptw) {
+ u32 port_status;
+
+ udelay(1000);
+
+ /* enable 16-bit UTMI interface */
+ port_status = ehci_readl(ehci, &ehci->regs->port_status[0]);
+ port_status |= BIT(28);
+ ehci_writel(ehci, port_status, &ehci->regs->port_status[0]);
+
+ ehci_dbg(ehci, "16-bit UTMI interface enabled, status: %08x\n",
+ ehci_readl(ehci, &ehci->regs->port_status[0]));
+ }
+
+ if (ehci->reset_notifier)
+ ehci->reset_notifier(ehci_to_hcd(ehci));
+
ehci->rh_state = EHCI_RH_HALTED;
ehci->next_statechange = jiffies;
retval = ehci_handshake(ehci, &ehci->regs->command,
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -228,6 +228,10 @@ struct ehci_hcd { /* one per controlle
unsigned need_oc_pp_cycle:1; /* MPC834X port power */
unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
unsigned ignore_oc:1;
+ unsigned qca_force_host_mode:1;
+ unsigned qca_force_16bit_ptw:1; /* force 16 bit UTMI */
+
+ void (*reset_notifier)(struct usb_hcd *hcd);
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)
--- a/include/linux/usb/ehci_pdriver.h
+++ b/include/linux/usb/ehci_pdriver.h
@@ -50,6 +50,8 @@ struct usb_ehci_pdata {
unsigned reset_on_resume:1;
unsigned dma_mask_64:1;
unsigned ignore_oc:1;
+ unsigned qca_force_host_mode:1;
+ unsigned qca_force_16bit_ptw:1;
/* Turn on all power and clocks */
int (*power_on)(struct platform_device *pdev);
@@ -59,6 +61,7 @@ struct usb_ehci_pdata {
* turn off everything else */
void (*power_suspend)(struct platform_device *pdev);
int (*pre_setup)(struct usb_hcd *hcd);
+ void (*reset_notifier)(struct platform_device *pdev);
};
#endif /* __USB_CORE_EHCI_PDRIVER_H */
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -51,6 +51,14 @@ struct ehci_platform_priv {
static const char hcd_name[] = "ehci-platform";
+static void ehci_platform_reset_notifier(struct usb_hcd *hcd)
+{
+ struct platform_device *pdev = to_platform_device(hcd->self.controller);
+ struct usb_ehci_pdata *pdata = pdev->dev.platform_data;
+
+ pdata->reset_notifier(pdev);
+}
+
static int ehci_platform_reset(struct usb_hcd *hcd)
{
struct platform_device *pdev = to_platform_device(hcd->self.controller);
@@ -256,6 +264,13 @@ static int ehci_platform_probe(struct pl
priv->reset_on_resume = true;
if (pdata->ignore_oc)
ehci->ignore_oc = 1;
+ if (pdata->qca_force_host_mode)
+ ehci->qca_force_host_mode = 1;
+ if (pdata->qca_force_16bit_ptw)
+ ehci->qca_force_16bit_ptw = 1;
+
+ if (pdata->reset_notifier)
+ ehci->reset_notifier = ehci_platform_reset_notifier;
#ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
if (ehci->big_endian_mmio) {
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