#include <common.h>
#include <usb.h>
-#include <asm-generic/errno.h>
+#include <linux/errno.h>
#include <asm/omap_common.h>
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
-#include <asm/arch/xhci-omap.h>
#include <linux/compat.h>
#include <linux/usb/dwc3.h>
+#include <linux/usb/xhci-omap.h>
#include "xhci.h"
static struct omap_xhci omap;
-struct usb_dpll_params {
- u16 m;
- u8 n;
- u8 freq:3;
- u8 sd;
- u32 mf;
-};
-
-#define NUM_USB_CLKS 6
-
-static struct usb_dpll_params omap_usb3_dpll_params[NUM_USB_CLKS] = {
- {1250, 5, 4, 20, 0}, /* 12 MHz */
- {3125, 20, 4, 20, 0}, /* 16.8 MHz */
- {1172, 8, 4, 20, 65537}, /* 19.2 MHz */
- {1250, 12, 4, 20, 0}, /* 26 MHz */
- {3125, 47, 4, 20, 92843}, /* 38.4 MHz */
- {1000, 7, 4, 10, 0}, /* 20 MHz */
-};
-
-static void omap_usb_dpll_relock(struct omap_usb3_phy *phy_regs)
-{
- u32 val;
-
- writel(SET_PLL_GO, &phy_regs->pll_go);
- do {
- val = readl(&phy_regs->pll_status);
- if (val & PLL_LOCK)
- break;
- } while (1);
-}
-
-static void omap_usb_dpll_lock(struct omap_usb3_phy *phy_regs)
-{
- u32 clk_index = get_sys_clk_index();
- u32 val;
-
- val = readl(&phy_regs->pll_config_1);
- val &= ~PLL_REGN_MASK;
- val |= omap_usb3_dpll_params[clk_index].n << PLL_REGN_SHIFT;
- writel(val, &phy_regs->pll_config_1);
-
- val = readl(&phy_regs->pll_config_2);
- val &= ~PLL_SELFREQDCO_MASK;
- val |= omap_usb3_dpll_params[clk_index].freq << PLL_SELFREQDCO_SHIFT;
- writel(val, &phy_regs->pll_config_2);
-
- val = readl(&phy_regs->pll_config_1);
- val &= ~PLL_REGM_MASK;
- val |= omap_usb3_dpll_params[clk_index].m << PLL_REGM_SHIFT;
- writel(val, &phy_regs->pll_config_1);
-
- val = readl(&phy_regs->pll_config_4);
- val &= ~PLL_REGM_F_MASK;
- val |= omap_usb3_dpll_params[clk_index].mf << PLL_REGM_F_SHIFT;
- writel(val, &phy_regs->pll_config_4);
-
- val = readl(&phy_regs->pll_config_3);
- val &= ~PLL_SD_MASK;
- val |= omap_usb3_dpll_params[clk_index].sd << PLL_SD_SHIFT;
- writel(val, &phy_regs->pll_config_3);
-
- omap_usb_dpll_relock(phy_regs);
-}
-
-static void usb3_phy_partial_powerup(struct omap_usb3_phy *phy_regs)
-{
- u32 rate = get_sys_clk_freq()/1000000;
- u32 val;
-
- val = readl((*ctrl)->control_phy_power_usb);
- val &= ~(USB3_PWRCTL_CLK_CMD_MASK | USB3_PWRCTL_CLK_FREQ_MASK);
- val |= (USB3_PHY_PARTIAL_RX_POWERON | USB3_PHY_TX_RX_POWERON);
- val |= rate << USB3_PWRCTL_CLK_FREQ_SHIFT;
-
- writel(val, (*ctrl)->control_phy_power_usb);
-}
-
-static void usb3_phy_power(int on)
-{
- u32 val;
-
- val = readl((*ctrl)->control_phy_power_usb);
- if (on) {
- val &= ~USB3_PWRCTL_CLK_CMD_MASK;
- val |= USB3_PHY_TX_RX_POWERON;
- } else {
- val &= (~USB3_PWRCTL_CLK_CMD_MASK & ~USB3_PHY_TX_RX_POWERON);
- }
-
- writel(val, (*ctrl)->control_phy_power_usb);
-}
-
-static void dwc_usb3_phy_init(struct omap_usb3_phy *phy_regs)
-{
- omap_usb_dpll_lock(phy_regs);
-
- usb3_phy_partial_powerup(phy_regs);
- /*
- * Give enough time for the PHY to partially power-up before
- * powering it up completely. delay value suggested by the HW
- * team.
- */
- mdelay(100);
- usb3_phy_power(1);
-}
-
-static void omap_enable_phy_clocks(struct omap_xhci *omap)
-{
- u32 val;
-
- /* Setting OCP2SCP1 register */
- setbits_le32((*prcm)->cm_l3init_ocp2scp1_clkctrl,
- OCP2SCP1_CLKCTRL_MODULEMODE_HW);
-
- /* Turn on 32K AON clk */
- setbits_le32((*prcm)->cm_coreaon_usb_phy_core_clkctrl,
- USBPHY_CORE_CLKCTRL_OPTFCLKEN_CLK32K);
-
- /* Setting CM_L3INIT_CLKSTCTRL to 0x0 i.e NO sleep */
- writel(0x0, (*prcm)->cm_l3init_clkstctrl);
-
- val = (USBOTGSS_DMADISABLE |
- USBOTGSS_STANDBYMODE_SMRT_WKUP |
- USBOTGSS_IDLEMODE_NOIDLE);
- writel(val, &omap->otg_wrapper->sysconfig);
-
- /* Clear the utmi OTG status */
- val = readl(&omap->otg_wrapper->utmi_otg_status);
- writel(val, &omap->otg_wrapper->utmi_otg_status);
-
- /* Enable interrupts */
- writel(USBOTGSS_COREIRQ_EN, &omap->otg_wrapper->irqenable_set_0);
- val = (USBOTGSS_IRQ_SET_1_IDPULLUP_FALL_EN |
- USBOTGSS_IRQ_SET_1_DISCHRGVBUS_FALL_EN |
- USBOTGSS_IRQ_SET_1_CHRGVBUS_FALL_EN |
- USBOTGSS_IRQ_SET_1_DRVVBUS_FALL_EN |
- USBOTGSS_IRQ_SET_1_IDPULLUP_RISE_EN |
- USBOTGSS_IRQ_SET_1_DISCHRGVBUS_RISE_EN |
- USBOTGSS_IRQ_SET_1_CHRGVBUS_RISE_EN |
- USBOTGSS_IRQ_SET_1_DRVVBUS_RISE_EN |
- USBOTGSS_IRQ_SET_1_OEVT_EN);
- writel(val, &omap->otg_wrapper->irqenable_set_1);
-
- /* Clear the IRQ status */
- val = readl(&omap->otg_wrapper->irqstatus_1);
- writel(val, &omap->otg_wrapper->irqstatus_1);
- val = readl(&omap->otg_wrapper->irqstatus_0);
- writel(val, &omap->otg_wrapper->irqstatus_0);
-
- /* Enable the USB OTG Super speed clocks */
- val = (OPTFCLKEN_REFCLK960M | OTG_SS_CLKCTRL_MODULEMODE_HW);
- setbits_le32((*prcm)->cm_l3init_usb_otg_ss_clkctrl, val);
-
-};
-
-inline int __board_usb_init(void)
+__weak int omap_xhci_board_usb_init(int index, enum usb_init_type init)
{
+ enable_usb_clocks(index);
return 0;
}
-int board_usb_init(void) __attribute__((weak, alias("__board_usb_init")));
-static void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode)
+int board_usb_init(int index, enum usb_init_type init)
{
- clrsetbits_le32(&dwc3_reg->g_ctl,
- DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG),
- DWC3_GCTL_PRTCAPDIR(mode));
+ return omap_xhci_board_usb_init(index, init);
}
-static void dwc3_core_soft_reset(struct dwc3 *dwc3_reg)
+__weak int omap_xhci_board_usb_cleanup(int index, enum usb_init_type init)
{
- /* 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, 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, DWC3_GUSB2PHYCFG_PHYSOFTRST);
-
- /* After PHYs are stable we can take Core out of reset state */
- clrbits_le32(&dwc3_reg->g_ctl, DWC3_GCTL_CORESOFTRESET);
+ disable_usb_clocks(index);
+ return 0;
}
-static int dwc3_core_init(struct dwc3 *dwc3_reg)
+int board_usb_cleanup(int index, enum usb_init_type init)
{
- u32 reg;
- u32 revision;
- 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 -1;
- }
-
- dwc3_core_soft_reset(dwc3_reg);
-
- dwc3_hwparams1 = readl(&dwc3_reg->g_hwparams1);
-
- reg = readl(&dwc3_reg->g_ctl);
- reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
- reg &= ~DWC3_GCTL_DISSCRAMBLE;
- switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc3_hwparams1)) {
- case DWC3_GHWPARAMS1_EN_PWROPT_CLK:
- reg &= ~DWC3_GCTL_DSBLCLKGTNG;
- break;
- default:
- debug("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)
- reg |= DWC3_GCTL_U2RSTECN;
-
- writel(reg, &dwc3_reg->g_ctl);
-
- return 0;
+ return omap_xhci_board_usb_cleanup(index, init);
}
static int omap_xhci_core_init(struct omap_xhci *omap)
{
int ret = 0;
- omap_enable_phy_clocks(omap);
-
- dwc_usb3_phy_init(omap->usb3_phy);
+ usb_phy_power(1);
+ omap_enable_phy(omap);
ret = dwc3_core_init(omap->dwc3_reg);
if (ret) {
static void omap_xhci_core_exit(struct omap_xhci *omap)
{
- usb3_phy_power(0);
+ usb_phy_power(0);
}
int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
ctx->usb3_phy = (struct omap_usb3_phy *)OMAP_OCP1_SCP_BASE;
ctx->otg_wrapper = (struct omap_dwc_wrapper *)OMAP_OTG_WRAPPER_BASE;
- ret = board_usb_init();
+ ret = board_usb_init(index, USB_INIT_HOST);
if (ret != 0) {
puts("Failed to initialize board for USB\n");
return ret;
struct omap_xhci *ctx = &omap;
omap_xhci_core_exit(ctx);
+ board_usb_cleanup(index, USB_INIT_HOST);
}
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