X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fehci-exynos.c;h=18e9251b64f5c1cadd5e4121fb99a753c70a75a6;hb=3a67c7576e36b880ec7d6d73d906dc5046e1df1b;hp=155677e0d948f642313899c35804621b18fc49ac;hpb=58494052b5fa1c2cbed9f1e04049f2951708cfa3;p=karo-tx-uboot.git diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index 155677e0d9..18e9251b64 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -16,6 +17,7 @@ #include #include #include +#include #include #include #include "ehci.h" @@ -23,69 +25,66 @@ /* Declare global data pointer */ DECLARE_GLOBAL_DATA_PTR; +struct exynos_ehci_platdata { + struct usb_platdata usb_plat; + fdt_addr_t hcd_base; + fdt_addr_t phy_base; + struct gpio_desc vbus_gpio; +}; + /** * Contains pointers to register base addresses * for the usb controller. */ struct exynos_ehci { + struct ehci_ctrl ctrl; struct exynos_usb_phy *usb; struct ehci_hccr *hcd; }; -static struct exynos_ehci exynos; - -#ifdef CONFIG_OF_CONTROL -static int exynos_usb_parse_dt(const void *blob, struct exynos_ehci *exynos) +static int ehci_usb_ofdata_to_platdata(struct udevice *dev) { - fdt_addr_t addr; + struct exynos_ehci_platdata *plat = dev_get_platdata(dev); + const void *blob = gd->fdt_blob; unsigned int node; int depth; - node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_EHCI); - if (node <= 0) { - debug("EHCI: Can't get device node for ehci\n"); - return -ENODEV; - } - /* - * Get the base address for EHCI controller from the device node + * Get the base address for XHCI controller from the device node */ - addr = fdtdec_get_addr(blob, node, "reg"); - if (addr == FDT_ADDR_T_NONE) { - debug("Can't get the EHCI register address\n"); + plat->hcd_base = dev_get_addr(dev); + if (plat->hcd_base == FDT_ADDR_T_NONE) { + debug("Can't get the XHCI register base address\n"); return -ENXIO; } - exynos->hcd = (struct ehci_hccr *)addr; - depth = 0; - node = fdtdec_next_compatible_subnode(blob, node, - COMPAT_SAMSUNG_EXYNOS_USB_PHY, &depth); + node = fdtdec_next_compatible_subnode(blob, dev->of_offset, + COMPAT_SAMSUNG_EXYNOS_USB_PHY, &depth); if (node <= 0) { - debug("EHCI: Can't get device node for usb-phy controller\n"); + debug("XHCI: Can't get device node for usb3-phy controller\n"); return -ENODEV; } /* * Get the base address for usbphy from the device node */ - exynos->usb = (struct exynos_usb_phy *)fdtdec_get_addr(blob, node, - "reg"); - if (exynos->usb == NULL) { + plat->phy_base = fdtdec_get_addr(blob, node, "reg"); + if (plat->phy_base == FDT_ADDR_T_NONE) { debug("Can't get the usbphy register address\n"); return -ENXIO; } + /* Vbus gpio */ + gpio_request_by_name(dev, "samsung,vbus-gpio", 0, + &plat->vbus_gpio, GPIOD_IS_OUT); + return 0; } -#endif -/* Setup the EHCI host controller. */ -static void setup_usb_phy(struct exynos_usb_phy *usb) +static void exynos5_setup_usb_phy(struct exynos_usb_phy *usb) { - set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN); - - set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN); + u32 hsic_ctrl; clrbits_le32(&usb->usbphyctrl0, HOST_CTRL0_FSEL_MASK | @@ -107,6 +106,32 @@ static void setup_usb_phy(struct exynos_usb_phy *usb) clrbits_le32(&usb->usbphyctrl0, HOST_CTRL0_LINKSWRST | HOST_CTRL0_UTMISWRST); + + /* HSIC Phy Setting */ + hsic_ctrl = (HSIC_CTRL_FORCESUSPEND | + HSIC_CTRL_FORCESLEEP | + HSIC_CTRL_SIDDQ); + + clrbits_le32(&usb->hsicphyctrl1, hsic_ctrl); + clrbits_le32(&usb->hsicphyctrl2, hsic_ctrl); + + hsic_ctrl = (((HSIC_CTRL_REFCLKDIV_12 & HSIC_CTRL_REFCLKDIV_MASK) + << HSIC_CTRL_REFCLKDIV_SHIFT) + | ((HSIC_CTRL_REFCLKSEL & HSIC_CTRL_REFCLKSEL_MASK) + << HSIC_CTRL_REFCLKSEL_SHIFT) + | HSIC_CTRL_UTMISWRST); + + setbits_le32(&usb->hsicphyctrl1, hsic_ctrl); + setbits_le32(&usb->hsicphyctrl2, hsic_ctrl); + + udelay(10); + + clrbits_le32(&usb->hsicphyctrl1, HSIC_CTRL_PHYSWRST | + HSIC_CTRL_UTMISWRST); + + clrbits_le32(&usb->hsicphyctrl2, HSIC_CTRL_PHYSWRST | + HSIC_CTRL_UTMISWRST); + udelay(20); /* EHCI Ctrl setting */ @@ -117,9 +142,37 @@ static void setup_usb_phy(struct exynos_usb_phy *usb) EHCICTRL_ENAINCR16); } -/* Reset the EHCI host controller. */ -static void reset_usb_phy(struct exynos_usb_phy *usb) +static void exynos4412_setup_usb_phy(struct exynos4412_usb_phy *usb) { + writel(CLK_24MHZ, &usb->usbphyclk); + + clrbits_le32(&usb->usbphyctrl, (PHYPWR_NORMAL_MASK_HSIC0 | + PHYPWR_NORMAL_MASK_HSIC1 | PHYPWR_NORMAL_MASK_PHY1 | + PHYPWR_NORMAL_MASK_PHY0)); + + setbits_le32(&usb->usbphyrstcon, (RSTCON_HOSTPHY_SWRST | RSTCON_SWRST)); + udelay(10); + clrbits_le32(&usb->usbphyrstcon, (RSTCON_HOSTPHY_SWRST | RSTCON_SWRST)); +} + +static void setup_usb_phy(struct exynos_usb_phy *usb) +{ + set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN); + + set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN); + + if (cpu_is_exynos5()) + exynos5_setup_usb_phy(usb); + else if (cpu_is_exynos4()) + if (proid_is_exynos4412()) + exynos4412_setup_usb_phy((struct exynos4412_usb_phy *) + usb); +} + +static void exynos5_reset_usb_phy(struct exynos_usb_phy *usb) +{ + u32 hsic_ctrl; + /* HOST_PHY reset */ setbits_le32(&usb->usbphyctrl0, HOST_CTRL0_PHYSWRST | @@ -128,50 +181,83 @@ static void reset_usb_phy(struct exynos_usb_phy *usb) HOST_CTRL0_FORCESUSPEND | HOST_CTRL0_FORCESLEEP); - set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE); + /* HSIC Phy reset */ + hsic_ctrl = (HSIC_CTRL_FORCESUSPEND | + HSIC_CTRL_FORCESLEEP | + HSIC_CTRL_SIDDQ | + HSIC_CTRL_PHYSWRST); + + setbits_le32(&usb->hsicphyctrl1, hsic_ctrl); + setbits_le32(&usb->hsicphyctrl2, hsic_ctrl); } -/* - * EHCI-initialization - * Create the appropriate control structures to manage - * a new EHCI host controller. - */ -int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) +static void exynos4412_reset_usb_phy(struct exynos4412_usb_phy *usb) { - struct exynos_ehci *ctx = &exynos; + setbits_le32(&usb->usbphyctrl, (PHYPWR_NORMAL_MASK_HSIC0 | + PHYPWR_NORMAL_MASK_HSIC1 | PHYPWR_NORMAL_MASK_PHY1 | + PHYPWR_NORMAL_MASK_PHY0)); +} -#ifdef CONFIG_OF_CONTROL - if (exynos_usb_parse_dt(gd->fdt_blob, ctx)) { - debug("Unable to parse device tree for ehci-exynos\n"); - return -ENODEV; - } -#else - ctx->usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy(); - ctx->hcd = (struct ehci_hccr *)samsung_get_base_usb_ehci(); -#endif +/* Reset the EHCI host controller. */ +static void reset_usb_phy(struct exynos_usb_phy *usb) +{ + if (cpu_is_exynos5()) + exynos5_reset_usb_phy(usb); + else if (cpu_is_exynos4()) + if (proid_is_exynos4412()) + exynos4412_reset_usb_phy((struct exynos4412_usb_phy *) + usb); - setup_usb_phy(ctx->usb); + set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE); +} - *hccr = ctx->hcd; - *hcor = (struct ehci_hcor *)((uint32_t) *hccr - + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); +static int ehci_usb_probe(struct udevice *dev) +{ + struct exynos_ehci_platdata *plat = dev_get_platdata(dev); + struct exynos_ehci *ctx = dev_get_priv(dev); + struct ehci_hcor *hcor; - debug("Exynos5-ehci: init hccr %x and hcor %x hc_length %d\n", - (uint32_t)*hccr, (uint32_t)*hcor, - (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); + ctx->hcd = (struct ehci_hccr *)plat->hcd_base; + ctx->usb = (struct exynos_usb_phy *)plat->phy_base; + hcor = (struct ehci_hcor *)((uint32_t)ctx->hcd + + HC_LENGTH(ehci_readl(&ctx->hcd->cr_capbase))); - return 0; + /* setup the Vbus gpio here */ + if (dm_gpio_is_valid(&plat->vbus_gpio)) + dm_gpio_set_value(&plat->vbus_gpio, 1); + + setup_usb_phy(ctx->usb); + + return ehci_register(dev, ctx->hcd, hcor, NULL, 0, USB_INIT_HOST); } -/* - * Destroy the appropriate control structures corresponding - * the EHCI host controller. - */ -int ehci_hcd_stop(int index) +static int ehci_usb_remove(struct udevice *dev) { - struct exynos_ehci *ctx = &exynos; + struct exynos_ehci *ctx = dev_get_priv(dev); + int ret; + ret = ehci_deregister(dev); + if (ret) + return ret; reset_usb_phy(ctx->usb); return 0; } + +static const struct udevice_id ehci_usb_ids[] = { + { .compatible = "samsung,exynos-ehci" }, + { } +}; + +U_BOOT_DRIVER(usb_ehci) = { + .name = "ehci_exynos", + .id = UCLASS_USB, + .of_match = ehci_usb_ids, + .ofdata_to_platdata = ehci_usb_ofdata_to_platdata, + .probe = ehci_usb_probe, + .remove = ehci_usb_remove, + .ops = &ehci_usb_ops, + .priv_auto_alloc_size = sizeof(struct exynos_ehci), + .platdata_auto_alloc_size = sizeof(struct exynos_ehci_platdata), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +};