diff options
Diffstat (limited to 'drivers/usb/host/ehci-fsl.c')
| -rw-r--r-- | drivers/usb/host/ehci-fsl.c | 57 |
1 files changed, 39 insertions, 18 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index b7451b29c5ac..9bfde82078ec 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -210,11 +210,11 @@ static void usb_hcd_fsl_remove(struct usb_hcd *hcd, usb_put_hcd(hcd); } -static void ehci_fsl_setup_phy(struct usb_hcd *hcd, +static int ehci_fsl_setup_phy(struct usb_hcd *hcd, enum fsl_usb2_phy_modes phy_mode, unsigned int port_offset) { - u32 portsc, temp; + u32 portsc; struct ehci_hcd *ehci = hcd_to_ehci(hcd); void __iomem *non_ehci = hcd->regs; struct device *dev = hcd->self.controller; @@ -232,9 +232,15 @@ static void ehci_fsl_setup_phy(struct usb_hcd *hcd, case FSL_USB2_PHY_ULPI: if (pdata->controller_ver) { /* controller version 1.6 or above */ - temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); - out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | - USB_CTRL_USB_EN | ULPI_PHY_CLK_SEL); + setbits32(non_ehci + FSL_SOC_USB_CTRL, + ULPI_PHY_CLK_SEL); + /* + * Due to controller issue of PHY_CLK_VALID in ULPI + * mode, we set USB_CTRL_USB_EN before checking + * PHY_CLK_VALID, otherwise PHY_CLK_VALID doesn't work. + */ + clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, + UTMI_PHY_EN, USB_CTRL_USB_EN); } portsc |= PORT_PTS_ULPI; break; @@ -247,9 +253,7 @@ static void ehci_fsl_setup_phy(struct usb_hcd *hcd, case FSL_USB2_PHY_UTMI: if (pdata->controller_ver) { /* controller version 1.6 or above */ - temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); - out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | - UTMI_PHY_EN | USB_CTRL_USB_EN); + setbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN); mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to become stable - 10ms*/ } @@ -262,23 +266,33 @@ static void ehci_fsl_setup_phy(struct usb_hcd *hcd, case FSL_USB2_PHY_NONE: break; } + + if (pdata->controller_ver && (phy_mode == FSL_USB2_PHY_ULPI)) { + /* check PHY_CLK_VALID to get phy clk valid */ + if (!spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) & + PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0)) { + printk(KERN_WARNING "fsl-ehci: USB PHY clock invalid\n"); + return -EINVAL; + } + } + ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); + + if (phy_mode != FSL_USB2_PHY_ULPI) + setbits32(non_ehci + FSL_SOC_USB_CTRL, USB_CTRL_USB_EN); + + return 0; } -static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) +static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) { struct usb_hcd *hcd = ehci_to_hcd(ehci); struct fsl_usb2_platform_data *pdata; void __iomem *non_ehci = hcd->regs; - u32 temp; pdata = hcd->self.controller->platform_data; - /* Enable PHY interface in the control reg. */ if (pdata->have_sysif_regs) { - temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); - out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004); - /* * Turn on cache snooping hardware, since some PowerPC platforms * wholly rely on hardware to deal with cache coherent @@ -293,7 +307,8 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) if ((pdata->operating_mode == FSL_USB2_DR_HOST) || (pdata->operating_mode == FSL_USB2_DR_OTG)) - ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0); + if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) + return -EINVAL; if (pdata->operating_mode == FSL_USB2_MPH_HOST) { unsigned int chip, rev, svr; @@ -307,9 +322,12 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) ehci->has_fsl_port_bug = 1; if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) - ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0); + if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) + return -EINVAL; + if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) - ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1); + if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1)) + return -EINVAL; } if (pdata->have_sysif_regs) { @@ -322,12 +340,15 @@ static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) #endif out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); } + + return 0; } /* called after powerup, by probe or system-pm "wakeup" */ static int ehci_fsl_reinit(struct ehci_hcd *ehci) { - ehci_fsl_usb_setup(ehci); + if (ehci_fsl_usb_setup(ehci)) + return -EINVAL; ehci_port_power(ehci, 0); return 0; |