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usb: xhci: keystone: Remove common dwc3 drv functions calls

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

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
This commit is contained in:
Ramneek Mehresh 2015-05-29 14:47:18 +05:30 committed by Marek Vasut
parent 2770448c8c
commit 792651f030
2 changed files with 1 additions and 88 deletions
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88
drivers/usb/host/xhci-keystone.c
View File

@ -68,94 +68,6 @@ static void keystone_xhci_phy_unset(struct keystone_xhci_phy *phy)
writel(val, &phy->phy_clock); 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) static int keystone_xhci_core_init(struct dwc3 *dwc3_reg)
{ {
int ret; int ret;

1
include/configs/ks2_evm.h
View File

@ -195,6 +195,7 @@
/* USB Configuration */ /* USB Configuration */
#define CONFIG_USB_XHCI #define CONFIG_USB_XHCI
#define CONFIG_USB_XHCI_DWC3
#define CONFIG_USB_XHCI_KEYSTONE #define CONFIG_USB_XHCI_KEYSTONE
#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2 #define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS 2
#define CONFIG_USB_STORAGE #define CONFIG_USB_STORAGE