From 4a271cb1b4ffdf33073c0dc8ee1e185c037275f4 Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Sat, 14 Sep 2013 14:02:52 +0530 Subject: [PATCH] exynos: usb: Switch USB VBUS GPIOs to be device tree configured Some Exynos boards, such as the SMDK5250, control USB port power through a GPIO pin. For now this had been hardcoded in the exynos5-dt board file, but not all boards use the same pin, requiring local changes to support different boards. This patch moves the GPIO initialization into the USB host controller drivers which they belong to, and uses the samsung,vbus-gpio parameter in the device tree to configure it. Signed-off-by: Julius Werner Signed-off-by: Vivek Gautam Cc: Simon Glass Cc: Minkyu Kang Cc: Marek Vasut --- board/samsung/smdk5250/exynos5-dt.c | 19 ------------------- drivers/usb/host/ehci-exynos.c | 11 +++++++++++ drivers/usb/host/xhci-exynos5.c | 11 +++++++++++ 3 files changed, 22 insertions(+), 19 deletions(-) diff --git a/board/samsung/smdk5250/exynos5-dt.c b/board/samsung/smdk5250/exynos5-dt.c index bb4a82f449..6bcc883b10 100644 --- a/board/samsung/smdk5250/exynos5-dt.c +++ b/board/samsung/smdk5250/exynos5-dt.c @@ -61,22 +61,6 @@ struct local_info { static struct local_info local; -#ifdef CONFIG_USB_EHCI_EXYNOS -int board_usb_vbus_init(void) -{ - struct exynos5_gpio_part1 *gpio1 = (struct exynos5_gpio_part1 *) - samsung_get_base_gpio_part1(); - - /* Enable VBUS power switch */ - s5p_gpio_direction_output(&gpio1->x2, 6, 1); - - /* VBUS turn ON time */ - mdelay(3); - - return 0; -} -#endif - #ifdef CONFIG_SOUND_MAX98095 static void board_enable_audio_codec(void) { @@ -122,9 +106,6 @@ int board_init(void) if (board_init_cros_ec_devices(gd->fdt_blob)) return -1; -#ifdef CONFIG_USB_EHCI_EXYNOS - board_usb_vbus_init(); -#endif #ifdef CONFIG_SOUND_MAX98095 board_enable_audio_codec(); #endif diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c index 155677e0d9..15926c4336 100644 --- a/drivers/usb/host/ehci-exynos.c +++ b/drivers/usb/host/ehci-exynos.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include "ehci.h" @@ -30,6 +31,7 @@ DECLARE_GLOBAL_DATA_PTR; struct exynos_ehci { struct exynos_usb_phy *usb; struct ehci_hccr *hcd; + struct fdt_gpio_state vbus_gpio; }; static struct exynos_ehci exynos; @@ -58,6 +60,9 @@ static int exynos_usb_parse_dt(const void *blob, struct exynos_ehci *exynos) exynos->hcd = (struct ehci_hccr *)addr; + /* Vbus gpio */ + fdtdec_decode_gpio(blob, node, "samsung,vbus-gpio", &exynos->vbus_gpio); + depth = 0; node = fdtdec_next_compatible_subnode(blob, node, COMPAT_SAMSUNG_EXYNOS_USB_PHY, &depth); @@ -150,6 +155,12 @@ int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) ctx->hcd = (struct ehci_hccr *)samsung_get_base_usb_ehci(); #endif +#ifdef CONFIG_OF_CONTROL + /* setup the Vbus gpio here */ + if (!fdtdec_setup_gpio(&ctx->vbus_gpio)) + gpio_direction_output(ctx->vbus_gpio.gpio, 1); +#endif + setup_usb_phy(ctx->usb); *hccr = ctx->hcd; diff --git a/drivers/usb/host/xhci-exynos5.c b/drivers/usb/host/xhci-exynos5.c index eb0ef6c57d..1146d101de 100644 --- a/drivers/usb/host/xhci-exynos5.c +++ b/drivers/usb/host/xhci-exynos5.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -39,6 +40,7 @@ struct exynos_xhci { struct exynos_usb3_phy *usb3_phy; struct xhci_hccr *hcd; struct dwc3 *dwc3_reg; + struct fdt_gpio_state vbus_gpio; }; static struct exynos_xhci exynos; @@ -66,6 +68,9 @@ static int exynos_usb3_parse_dt(const void *blob, struct exynos_xhci *exynos) } exynos->hcd = (struct xhci_hccr *)addr; + /* Vbus gpio */ + fdtdec_decode_gpio(blob, node, "samsung,vbus-gpio", &exynos->vbus_gpio); + depth = 0; node = fdtdec_next_compatible_subnode(blob, node, COMPAT_SAMSUNG_EXYNOS5_USB3_PHY, &depth); @@ -291,6 +296,12 @@ int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor) ctx->dwc3_reg = (struct dwc3 *)((char *)(ctx->hcd) + DWC3_REG_OFFSET); +#ifdef CONFIG_OF_CONTROL + /* setup the Vbus gpio here */ + if (!fdtdec_setup_gpio(&ctx->vbus_gpio)) + gpio_direction_output(ctx->vbus_gpio.gpio, 1); +#endif + ret = exynos_xhci_core_init(ctx); if (ret) { puts("XHCI: failed to initialize controller\n"); -- 2.30.2