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Diffstat (limited to 'target/linux/ar71xx/patches-4.4/490-usb-ehci-add-quirks-for-qca-socs.patch')
-rw-r--r--target/linux/ar71xx/patches-4.4/490-usb-ehci-add-quirks-for-qca-socs.patch103
1 files changed, 103 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-4.4/490-usb-ehci-add-quirks-for-qca-socs.patch b/target/linux/ar71xx/patches-4.4/490-usb-ehci-add-quirks-for-qca-socs.patch
new file mode 100644
index 0000000..d74ef1c
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.4/490-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 @@ 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) {