diff options
Diffstat (limited to 'arch/arm/cpu/armv7/sunxi/usbc.c')
-rw-r--r-- | arch/arm/cpu/armv7/sunxi/usbc.c | 124 |
1 files changed, 61 insertions, 63 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/usbc.c b/arch/arm/cpu/armv7/sunxi/usbc.c index 131e103..71817c1 100644 --- a/arch/arm/cpu/armv7/sunxi/usbc.c +++ b/arch/arm/cpu/armv7/sunxi/usbc.c @@ -1,9 +1,8 @@ /* - * Sunxi usb-controller code shared between the ehci and musb controllers + * Sunxi usb-phy code * - * Copyright (C) 2014 Roman Byshko - * - * Roman Byshko <rbyshko@gmail.com> + * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com> + * Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com> * * Based on code from * Allwinner Technology Co., Ltd. <www.allwinnertech.com> @@ -41,13 +40,12 @@ #define SUNXI_EHCI_AHB_INCRX_ALIGN_EN (1 << 8) #define SUNXI_EHCI_ULPI_BYPASS_EN (1 << 0) -static struct sunxi_usbc_hcd { - struct usb_hcd *hcd; +static struct sunxi_usb_phy { int usb_rst_mask; int gpio_vbus; int gpio_vbus_det; int id; -} sunxi_usbc_hcd[] = { +} sunxi_usb_phy[] = { { .usb_rst_mask = CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK, .id = 0, @@ -64,7 +62,7 @@ static struct sunxi_usbc_hcd { #endif }; -static int enabled_hcd_count; +static int sunxi_usb_phy_enabled_count; static int get_vbus_gpio(int index) { @@ -84,7 +82,7 @@ static int get_vbus_detect_gpio(int index) return -EINVAL; } -static void usb_phy_write(struct sunxi_usbc_hcd *sunxi_usbc, int addr, +static void usb_phy_write(struct sunxi_usb_phy *phy, int addr, int data, int len) { int j = 0, usbc_bit = 0; @@ -95,7 +93,7 @@ static void usb_phy_write(struct sunxi_usbc_hcd *sunxi_usbc, int addr, writel(0, dest); #endif - usbc_bit = 1 << (sunxi_usbc->id * 2); + usbc_bit = 1 << (phy->id * 2); for (j = 0; j < len; j++) { /* set the bit address to be written */ clrbits_le32(dest, 0xff << 8); @@ -116,24 +114,24 @@ static void usb_phy_write(struct sunxi_usbc_hcd *sunxi_usbc, int addr, } } -static void sunxi_usb_phy_init(struct sunxi_usbc_hcd *sunxi_usbc) +static void sunxi_usb_phy_config(struct sunxi_usb_phy *phy) { /* The following comments are machine * translated from Chinese, you have been warned! */ /* Regulation 45 ohms */ - if (sunxi_usbc->id == 0) - usb_phy_write(sunxi_usbc, 0x0c, 0x01, 1); + if (phy->id == 0) + usb_phy_write(phy, 0x0c, 0x01, 1); /* adjust PHY's magnitude and rate */ - usb_phy_write(sunxi_usbc, 0x20, 0x14, 5); + usb_phy_write(phy, 0x20, 0x14, 5); /* threshold adjustment disconnect */ #if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN6I - usb_phy_write(sunxi_usbc, 0x2a, 3, 2); + usb_phy_write(phy, 0x2a, 3, 2); #else - usb_phy_write(sunxi_usbc, 0x2a, 2, 2); + usb_phy_write(phy, 0x2a, 2, 2); #endif return; @@ -162,110 +160,110 @@ static void sunxi_usb_phy_passby(int index, int enable) return; } -void sunxi_usbc_enable_squelch_detect(int index, int enable) +void sunxi_usb_phy_enable_squelch_detect(int index, int enable) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - usb_phy_write(sunxi_usbc, 0x3c, enable ? 0 : 2, 2); + usb_phy_write(phy, 0x3c, enable ? 0 : 2, 2); } -int sunxi_usbc_request_resources(int index) +int sunxi_usb_phy_probe(int index) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; int ret = 0; - sunxi_usbc->gpio_vbus = get_vbus_gpio(index); - if (sunxi_usbc->gpio_vbus >= 0) { - ret |= gpio_request(sunxi_usbc->gpio_vbus, "usbc_vbus"); - ret |= gpio_direction_output(sunxi_usbc->gpio_vbus, 0); + phy->gpio_vbus = get_vbus_gpio(index); + if (phy->gpio_vbus >= 0) { + ret |= gpio_request(phy->gpio_vbus, "usbc_vbus"); + ret |= gpio_direction_output(phy->gpio_vbus, 0); } - sunxi_usbc->gpio_vbus_det = get_vbus_detect_gpio(index); - if (sunxi_usbc->gpio_vbus_det >= 0) { - ret |= gpio_request(sunxi_usbc->gpio_vbus_det, "usbc_vbus_det"); - ret |= gpio_direction_input(sunxi_usbc->gpio_vbus_det); + phy->gpio_vbus_det = get_vbus_detect_gpio(index); + if (phy->gpio_vbus_det >= 0) { + ret |= gpio_request(phy->gpio_vbus_det, "usbc_vbus_det"); + ret |= gpio_direction_input(phy->gpio_vbus_det); } return ret; } -int sunxi_usbc_free_resources(int index) +int sunxi_usb_phy_remove(int index) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; int ret = 0; - if (sunxi_usbc->gpio_vbus >= 0) - ret |= gpio_free(sunxi_usbc->gpio_vbus); + if (phy->gpio_vbus >= 0) + ret |= gpio_free(phy->gpio_vbus); - if (sunxi_usbc->gpio_vbus_det >= 0) - ret |= gpio_free(sunxi_usbc->gpio_vbus_det); + if (phy->gpio_vbus_det >= 0) + ret |= gpio_free(phy->gpio_vbus_det); return ret; } -void sunxi_usbc_enable(int index) +void sunxi_usb_phy_init(int index) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; /* enable common PHY only once */ - if (enabled_hcd_count == 0) + if (sunxi_usb_phy_enabled_count == 0) setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE); - setbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask); + setbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask); - sunxi_usb_phy_init(sunxi_usbc); + sunxi_usb_phy_config(phy); - if (sunxi_usbc->id != 0) + if (phy->id != 0) sunxi_usb_phy_passby(index, SUNXI_USB_PASSBY_EN); - enabled_hcd_count++; + sunxi_usb_phy_enabled_count++; } -void sunxi_usbc_disable(int index) +void sunxi_usb_phy_exit(int index) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - if (sunxi_usbc->id != 0) + if (phy->id != 0) sunxi_usb_phy_passby(index, !SUNXI_USB_PASSBY_EN); - clrbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask); + clrbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask); - /* disable common PHY only once, for the last enabled hcd */ - if (enabled_hcd_count == 1) + /* disable common PHY only once, for the last enabled phy */ + if (sunxi_usb_phy_enabled_count == 1) clrbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE); - enabled_hcd_count--; + sunxi_usb_phy_enabled_count--; } -void sunxi_usbc_vbus_enable(int index) +void sunxi_usb_phy_power_on(int index) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - if (sunxi_usbc->gpio_vbus >= 0) - gpio_set_value(sunxi_usbc->gpio_vbus, 1); + if (phy->gpio_vbus >= 0) + gpio_set_value(phy->gpio_vbus, 1); } -void sunxi_usbc_vbus_disable(int index) +void sunxi_usb_phy_power_off(int index) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - if (sunxi_usbc->gpio_vbus >= 0) - gpio_set_value(sunxi_usbc->gpio_vbus, 0); + if (phy->gpio_vbus >= 0) + gpio_set_value(phy->gpio_vbus, 0); } -int sunxi_usbc_vbus_detect(int index) +int sunxi_usb_phy_vbus_detect(int index) { - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; + struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; int err, retries = 3; - if (sunxi_usbc->gpio_vbus_det < 0) { + if (phy->gpio_vbus_det < 0) { eprintf("Error: invalid vbus detection pin\n"); - return sunxi_usbc->gpio_vbus_det; + return phy->gpio_vbus_det; } - err = gpio_get_value(sunxi_usbc->gpio_vbus_det); + err = gpio_get_value(phy->gpio_vbus_det); /* * Vbus may have been provided by the board and just been turned of * some milliseconds ago on reset, what we're measuring then is a @@ -273,7 +271,7 @@ int sunxi_usbc_vbus_detect(int index) */ while (err > 0 && retries--) { mdelay(100); - err = gpio_get_value(sunxi_usbc->gpio_vbus_det); + err = gpio_get_value(phy->gpio_vbus_det); } return err; |