diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.18/490-usb-ehci-add-quirks-for-qca-socs.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.18/490-usb-ehci-add-quirks-for-qca-socs.patch | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.18/490-usb-ehci-add-quirks-for-qca-socs.patch b/target/linux/ar71xx/patches-3.18/490-usb-ehci-add-quirks-for-qca-socs.patch new file mode 100644 index 0000000000..a5053130d6 --- /dev/null +++ b/target/linux/ar71xx/patches-3.18/490-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) { |