[U-Boot] [PATCH 4/8] usb:xhci:keystone: Remove common dwc3 drv functions calls

[Ramneek Mehresh]

Remove all redundant dwc3 driver function calls that
are defined by dwc3 driver

Signed-off-by: Ramneek Mehresh <ramneek.mehresh at freescale.com>
---
 drivers/usb/host/xhci-keystone.c | 88 ----------------------------------------
 include/configs/ks2_evm.h        |  1 +
 2 files changed, 1 insertion(+), 88 deletions(-)

diff --git a/drivers/usb/host/xhci-keystone.c b/drivers/usb/host/xhci-keystone.c
index 05d338f..924fb76 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;
diff --git a/include/configs/ks2_evm.h b/include/configs/ks2_evm.h
index 42280ca..58730b2 100644
--- a/include/configs/ks2_evm.h
+++ b/include/configs/ks2_evm.h
@@ -197,6 +197,7 @@
 
 /* USB Configuration */
 #define CONFIG_USB_XHCI
+#define CONFIG_USB_XHCI_DWC3
 #define CONFIG_USB_XHCI_KEYSTONE
 #define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
 #define CONFIG_USB_STORAGE
-- 
1.8.3.1