ar71xx: add 4.1 support

[openwrt.git] / target / linux / ar71xx / patches-4.1 / 490-usb-ehci-add-quirks-for-qca-socs.patch

diff --git a/target/linux/ar71xx/patches-4.1/490-usb-ehci-add-quirks-for-qca-socs.patch b/target/linux/ar71xx/patches-4.1/490-usb-ehci-add-quirks-for-qca-socs.patch
new file mode 100644 (file)
index 0000000..a505313
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.1/490-usb-ehci-add-quirks-for-qca-socs.patch
@@ -0,0 +1,103 @@
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -252,6 +252,37 @@ 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 = ehci_handshake(ehci, &ehci->regs->command,
+--- a/drivers/usb/host/ehci.h
++++ b/drivers/usb/host/ehci.h
+@@ -227,6 +227,10 @@ 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
+@@ -46,6 +46,8 @@ 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);
+@@ -55,6 +57,7 @@ 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
+@@ -48,6 +48,14 @@ 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);
+@@ -228,6 +236,13 @@ static int ehci_platform_probe(struct pl
+               ehci->big_endian_mmio = 1;
+       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) {