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--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -249,6 +249,37 @@ static int ehci_reset (struct ehci_hcd *
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 = handshake (ehci, &ehci->regs->command,
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -201,6 +201,10 @@ struct ehci_hcd { /* one per controlle
unsigned has_synopsys_hc_bug:1; /* Synopsys HC */
unsigned frame_index_bug:1; /* MosChip (AKA NetMos) */
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
@@ -43,6 +43,8 @@ struct usb_ehci_pdata {
unsigned big_endian_mmio:1;
unsigned no_io_watchdog: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);
@@ -51,6 +53,7 @@ struct usb_ehci_pdata {
/* Turn on only VBUS suspend power and hotplug detection,
* turn off everything else */
void (*power_suspend)(struct platform_device *pdev);
+ 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
@@ -33,6 +33,14 @@
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);
@@ -45,6 +53,11 @@ static int ehci_platform_reset(struct us
ehci->big_endian_desc = pdata->big_endian_desc;
ehci->big_endian_mmio = pdata->big_endian_mmio;
ehci->ignore_oc = pdata->ignore_oc;
+ ehci->qca_force_host_mode = pdata->qca_force_host_mode;
+ ehci->qca_force_16bit_ptw = pdata->qca_force_16bit_ptw;
+
+ if (pdata->reset_notifier)
+ ehci->reset_notifier = ehci_platform_reset_notifier;
ehci->caps = hcd->regs + pdata->caps_offset;
retval = ehci_setup(hcd);
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