From 2aacc4239c32aa732621f3a432d576c68c3016d8 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 27 Apr 2015 15:05:10 +0200 Subject: sunxi: usb: Rename the usbc.? files to usb_phy.? The usbc.? files now only contain usb-phy related code, rename them to make this clear. Signed-off-by: Hans de Goede Acked-by: Ian Campbell --- arch/arm/cpu/armv7/sunxi/usbc.c | 278 ---------------------------------------- 1 file changed, 278 deletions(-) delete mode 100644 arch/arm/cpu/armv7/sunxi/usbc.c (limited to 'arch/arm/cpu/armv7/sunxi/usbc.c') diff --git a/arch/arm/cpu/armv7/sunxi/usbc.c b/arch/arm/cpu/armv7/sunxi/usbc.c deleted file mode 100644 index 71817c192a..0000000000 --- a/arch/arm/cpu/armv7/sunxi/usbc.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * Sunxi usb-phy code - * - * Copyright (C) 2015 Hans de Goede - * Copyright (C) 2014 Roman Byshko - * - * Based on code from - * Allwinner Technology Co., Ltd. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_AXP152_POWER -#include -#endif -#ifdef CONFIG_AXP209_POWER -#include -#endif -#ifdef CONFIG_AXP221_POWER -#include -#endif - -#define SUNXI_USB_PMU_IRQ_ENABLE 0x800 -#ifdef CONFIG_MACH_SUN8I_A33 -#define SUNXI_USB_CSR 0x410 -#else -#define SUNXI_USB_CSR 0x404 -#endif -#define SUNXI_USB_PASSBY_EN 1 - -#define SUNXI_EHCI_AHB_ICHR8_EN (1 << 10) -#define SUNXI_EHCI_AHB_INCR4_BURST_EN (1 << 9) -#define SUNXI_EHCI_AHB_INCRX_ALIGN_EN (1 << 8) -#define SUNXI_EHCI_ULPI_BYPASS_EN (1 << 0) - -static struct sunxi_usb_phy { - int usb_rst_mask; - int gpio_vbus; - int gpio_vbus_det; - int id; -} sunxi_usb_phy[] = { - { - .usb_rst_mask = CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK, - .id = 0, - }, - { - .usb_rst_mask = CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK, - .id = 1, - }, -#if (CONFIG_USB_MAX_CONTROLLER_COUNT > 1) - { - .usb_rst_mask = CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK, - .id = 2, - } -#endif -}; - -static int sunxi_usb_phy_enabled_count; - -static int get_vbus_gpio(int index) -{ - switch (index) { - case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_PIN); - case 1: return sunxi_name_to_gpio(CONFIG_USB1_VBUS_PIN); - case 2: return sunxi_name_to_gpio(CONFIG_USB2_VBUS_PIN); - } - return -EINVAL; -} - -static int get_vbus_detect_gpio(int index) -{ - switch (index) { - case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_DET); - } - return -EINVAL; -} - -static void usb_phy_write(struct sunxi_usb_phy *phy, int addr, - int data, int len) -{ - int j = 0, usbc_bit = 0; - void *dest = (void *)SUNXI_USB0_BASE + SUNXI_USB_CSR; - -#ifdef CONFIG_MACH_SUN8I_A33 - /* CSR needs to be explicitly initialized to 0 on A33 */ - writel(0, dest); -#endif - - usbc_bit = 1 << (phy->id * 2); - for (j = 0; j < len; j++) { - /* set the bit address to be written */ - clrbits_le32(dest, 0xff << 8); - setbits_le32(dest, (addr + j) << 8); - - clrbits_le32(dest, usbc_bit); - /* set data bit */ - if (data & 0x1) - setbits_le32(dest, 1 << 7); - else - clrbits_le32(dest, 1 << 7); - - setbits_le32(dest, usbc_bit); - - clrbits_le32(dest, usbc_bit); - - data >>= 1; - } -} - -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 (phy->id == 0) - usb_phy_write(phy, 0x0c, 0x01, 1); - - /* adjust PHY's magnitude and rate */ - usb_phy_write(phy, 0x20, 0x14, 5); - - /* threshold adjustment disconnect */ -#if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN6I - usb_phy_write(phy, 0x2a, 3, 2); -#else - usb_phy_write(phy, 0x2a, 2, 2); -#endif - - return; -} - -static void sunxi_usb_phy_passby(int index, int enable) -{ - unsigned long bits = 0; - void *addr; - - if (index == 1) - addr = (void *)SUNXI_USB1_BASE + SUNXI_USB_PMU_IRQ_ENABLE; - else - addr = (void *)SUNXI_USB2_BASE + SUNXI_USB_PMU_IRQ_ENABLE; - - bits = SUNXI_EHCI_AHB_ICHR8_EN | - SUNXI_EHCI_AHB_INCR4_BURST_EN | - SUNXI_EHCI_AHB_INCRX_ALIGN_EN | - SUNXI_EHCI_ULPI_BYPASS_EN; - - if (enable) - setbits_le32(addr, bits); - else - clrbits_le32(addr, bits); - - return; -} - -void sunxi_usb_phy_enable_squelch_detect(int index, int enable) -{ - struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - - usb_phy_write(phy, 0x3c, enable ? 0 : 2, 2); -} - -int sunxi_usb_phy_probe(int index) -{ - struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - int ret = 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); - } - - 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_usb_phy_remove(int index) -{ - struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - int ret = 0; - - if (phy->gpio_vbus >= 0) - ret |= gpio_free(phy->gpio_vbus); - - if (phy->gpio_vbus_det >= 0) - ret |= gpio_free(phy->gpio_vbus_det); - - return ret; -} - -void sunxi_usb_phy_init(int 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 (sunxi_usb_phy_enabled_count == 0) - setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE); - - setbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask); - - sunxi_usb_phy_config(phy); - - if (phy->id != 0) - sunxi_usb_phy_passby(index, SUNXI_USB_PASSBY_EN); - - sunxi_usb_phy_enabled_count++; -} - -void sunxi_usb_phy_exit(int index) -{ - struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - - if (phy->id != 0) - sunxi_usb_phy_passby(index, !SUNXI_USB_PASSBY_EN); - - clrbits_le32(&ccm->usb_clk_cfg, phy->usb_rst_mask); - - /* 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); - - sunxi_usb_phy_enabled_count--; -} - -void sunxi_usb_phy_power_on(int index) -{ - struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - - if (phy->gpio_vbus >= 0) - gpio_set_value(phy->gpio_vbus, 1); -} - -void sunxi_usb_phy_power_off(int index) -{ - struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - - if (phy->gpio_vbus >= 0) - gpio_set_value(phy->gpio_vbus, 0); -} - -int sunxi_usb_phy_vbus_detect(int index) -{ - struct sunxi_usb_phy *phy = &sunxi_usb_phy[index]; - int err, retries = 3; - - if (phy->gpio_vbus_det < 0) { - eprintf("Error: invalid vbus detection pin\n"); - return phy->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 - * residual charge on Vbus, sleep a bit and try again. - */ - while (err > 0 && retries--) { - mdelay(100); - err = gpio_get_value(phy->gpio_vbus_det); - } - - return err; -} -- cgit v1.2.1