From 792651f030a0b77961e484f8de36fa42add61900 Mon Sep 17 00:00:00 2001 From: Ramneek Mehresh Date: Fri, 29 May 2015 14:47:18 +0530 Subject: usb: xhci: keystone: Remove common dwc3 drv functions calls Remove all redundant dwc3 driver function calls that are defined by dwc3 driver Signed-off-by: Ramneek Mehresh --- drivers/usb/host/xhci-keystone.c | 88 ---------------------------------------- 1 file changed, 88 deletions(-) (limited to 'drivers/usb/host') diff --git a/drivers/usb/host/xhci-keystone.c b/drivers/usb/host/xhci-keystone.c index 05d338f261..924fb7616f 100644 --- a/drivers/usb/host/xhci-keystone.c +++ b/drivers/usb/host/xhci-keystone.c @@ -68,94 +68,6 @@ static void keystone_xhci_phy_unset(struct keystone_xhci_phy *phy) writel(val, &phy->phy_clock); } -static void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode) -{ - clrsetbits_le32(&dwc3_reg->g_ctl, - DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG), - DWC3_GCTL_PRTCAPDIR(mode)); -} - -static void dwc3_core_soft_reset(struct dwc3 *dwc3_reg) -{ - /* Before Resetting PHY, put Core in Reset */ - setbits_le32(&dwc3_reg->g_ctl, DWC3_GCTL_CORESOFTRESET); - - /* Assert USB3 PHY reset */ - setbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST); - - /* Assert USB2 PHY reset */ - setbits_le32(&dwc3_reg->g_usb2phycfg[0], DWC3_GUSB2PHYCFG_PHYSOFTRST); - - mdelay(100); - - /* Clear USB3 PHY reset */ - clrbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST); - - /* Clear USB2 PHY reset */ - clrbits_le32(&dwc3_reg->g_usb2phycfg[0], DWC3_GUSB2PHYCFG_PHYSOFTRST); - - /* After PHYs are stable we can take Core out of reset state */ - clrbits_le32(&dwc3_reg->g_ctl, DWC3_GCTL_CORESOFTRESET); -} - -static int dwc3_core_init(struct dwc3 *dwc3_reg) -{ - u32 revision, val; - unsigned long t_rst; - unsigned int dwc3_hwparams1; - - revision = readl(&dwc3_reg->g_snpsid); - /* This should read as U3 followed by revision number */ - if ((revision & DWC3_GSNPSID_MASK) != 0x55330000) { - puts("this is not a DesignWare USB3 DRD Core\n"); - return -EINVAL; - } - - /* issue device SoftReset too */ - writel(DWC3_DCTL_CSFTRST, &dwc3_reg->d_ctl); - - t_rst = get_timer(0); - do { - val = readl(&dwc3_reg->d_ctl); - if (!(val & DWC3_DCTL_CSFTRST)) - break; - WATCHDOG_RESET(); - } while (get_timer(t_rst) < 500); - - if (val & DWC3_DCTL_CSFTRST) { - debug("Reset timed out\n"); - return -2; - } - - dwc3_core_soft_reset(dwc3_reg); - - dwc3_hwparams1 = readl(&dwc3_reg->g_hwparams1); - - val = readl(&dwc3_reg->g_ctl); - val &= ~DWC3_GCTL_SCALEDOWN_MASK; - val &= ~DWC3_GCTL_DISSCRAMBLE; - switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc3_hwparams1)) { - case DWC3_GHWPARAMS1_EN_PWROPT_CLK: - val &= ~DWC3_GCTL_DSBLCLKGTNG; - break; - default: - printf("No power optimization available\n"); - } - - /* - * WORKAROUND: DWC3 revisions <1.90a have a bug - * where the device can fail to connect at SuperSpeed - * and falls back to high-speed mode which causes - * the device to enter a Connect/Disconnect loop - */ - if ((revision & DWC3_REVISION_MASK) < 0x190a) - val |= DWC3_GCTL_U2RSTECN; - - writel(val, &dwc3_reg->g_ctl); - - return 0; -} - static int keystone_xhci_core_init(struct dwc3 *dwc3_reg) { int ret; -- cgit v1.2.1