diff options
Diffstat (limited to 'arch/arm/cpu/armv7/sunxi/usbc.c')
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/usbc.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/usbc.c b/arch/arm/cpu/armv7/sunxi/usbc.c deleted file mode 100644 index a0e9604..0000000 --- a/arch/arm/cpu/armv7/sunxi/usbc.c +++ /dev/null @@ -1,308 +0,0 @@ -/* - * Sunxi usb-controller code shared between the ehci and musb controllers - * - * Copyright (C) 2014 Roman Byshko - * - * Roman Byshko <rbyshko@gmail.com> - * - * Based on code from - * Allwinner Technology Co., Ltd. <www.allwinnertech.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <asm/arch/clock.h> -#include <asm/arch/cpu.h> -#include <asm/arch/usbc.h> -#include <asm/gpio.h> -#include <asm/io.h> -#include <common.h> -#ifdef CONFIG_AXP152_POWER -#include <axp152.h> -#endif -#ifdef CONFIG_AXP209_POWER -#include <axp209.h> -#endif -#ifdef CONFIG_AXP221_POWER -#include <axp221.h> -#endif - -#define SUNXI_USB_PMU_IRQ_ENABLE 0x800 -#define SUNXI_USB_CSR 0x404 -#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_usbc_hcd { - struct usb_hcd *hcd; - int usb_rst_mask; - int ahb_clk_mask; - int gpio_vbus; - int gpio_vbus_det; - int irq; - int id; -} sunxi_usbc_hcd[] = { - { - .usb_rst_mask = CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK, - .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB0, -#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I - .irq = 71, -#else - .irq = 38, -#endif - .id = 0, - }, - { - .usb_rst_mask = CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK, - .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0, -#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I - .irq = 72, -#else - .irq = 39, -#endif - .id = 1, - }, -#if (CONFIG_USB_MAX_CONTROLLER_COUNT > 1) - { - .usb_rst_mask = CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK, - .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI1, -#ifdef CONFIG_MACH_SUN6I - .irq = 74, -#else - .irq = 40, -#endif - .id = 2, - } -#endif -}; - -static int enabled_hcd_count; - -void *sunxi_usbc_get_io_base(int index) -{ - switch (index) { - case 0: - return (void *)SUNXI_USB0_BASE; - case 1: - return (void *)SUNXI_USB1_BASE; - case 2: - return (void *)SUNXI_USB2_BASE; - default: - return NULL; - } -} - -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 -1; -} - -static int get_vbus_detect_gpio(int index) -{ - switch (index) { - case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_DET); - } - return -1; -} - -static void usb_phy_write(struct sunxi_usbc_hcd *sunxi_usbc, int addr, - int data, int len) -{ - int j = 0, usbc_bit = 0; - void *dest = sunxi_usbc_get_io_base(0) + SUNXI_USB_CSR; - - usbc_bit = 1 << (sunxi_usbc->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_init(struct sunxi_usbc_hcd *sunxi_usbc) -{ - /* 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); - - /* adjust PHY's magnitude and rate */ - usb_phy_write(sunxi_usbc, 0x20, 0x14, 5); - - /* threshold adjustment disconnect */ -#if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN6I - usb_phy_write(sunxi_usbc, 0x2a, 3, 2); -#else - usb_phy_write(sunxi_usbc, 0x2a, 2, 2); -#endif - - return; -} - -static void sunxi_usb_passby(struct sunxi_usbc_hcd *sunxi_usbc, int enable) -{ - unsigned long bits = 0; - void *addr = sunxi_usbc_get_io_base(sunxi_usbc->id) + - 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_usbc_enable_squelch_detect(int index, int enable) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - - usb_phy_write(sunxi_usbc, 0x3c, enable ? 0 : 2, 2); -} - -int sunxi_usbc_request_resources(int index) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - int ret = 0; - - sunxi_usbc->gpio_vbus = get_vbus_gpio(index); - if (sunxi_usbc->gpio_vbus != -1) { - ret |= gpio_request(sunxi_usbc->gpio_vbus, "usbc_vbus"); - ret |= gpio_direction_output(sunxi_usbc->gpio_vbus, 0); - } - - sunxi_usbc->gpio_vbus_det = get_vbus_detect_gpio(index); - if (sunxi_usbc->gpio_vbus_det != -1) { - ret |= gpio_request(sunxi_usbc->gpio_vbus_det, "usbc_vbus_det"); - ret |= gpio_direction_input(sunxi_usbc->gpio_vbus_det); - } - - return ret; -} - -int sunxi_usbc_free_resources(int index) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - int ret = 0; - - if (sunxi_usbc->gpio_vbus != -1) - ret |= gpio_free(sunxi_usbc->gpio_vbus); - - if (sunxi_usbc->gpio_vbus_det != -1) - ret |= gpio_free(sunxi_usbc->gpio_vbus_det); - - return ret; -} - -void sunxi_usbc_enable(int index) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - - /* enable common PHY only once */ - if (enabled_hcd_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->ahb_gate0, sunxi_usbc->ahb_clk_mask); -#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I - setbits_le32(&ccm->ahb_reset0_cfg, sunxi_usbc->ahb_clk_mask); -#endif - - sunxi_usb_phy_init(sunxi_usbc); - - if (sunxi_usbc->id != 0) - sunxi_usb_passby(sunxi_usbc, SUNXI_USB_PASSBY_EN); - - enabled_hcd_count++; -} - -void sunxi_usbc_disable(int index) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - - if (sunxi_usbc->id != 0) - sunxi_usb_passby(sunxi_usbc, !SUNXI_USB_PASSBY_EN); - -#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I - clrbits_le32(&ccm->ahb_reset0_cfg, sunxi_usbc->ahb_clk_mask); -#endif - clrbits_le32(&ccm->ahb_gate0, sunxi_usbc->ahb_clk_mask); - clrbits_le32(&ccm->usb_clk_cfg, sunxi_usbc->usb_rst_mask); - - /* disable common PHY only once, for the last enabled hcd */ - if (enabled_hcd_count == 1) - clrbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE); - - enabled_hcd_count--; -} - -void sunxi_usbc_vbus_enable(int index) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - - if (sunxi_usbc->gpio_vbus != -1) - gpio_set_value(sunxi_usbc->gpio_vbus, 1); -} - -void sunxi_usbc_vbus_disable(int index) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - - if (sunxi_usbc->gpio_vbus != -1) - gpio_set_value(sunxi_usbc->gpio_vbus, 0); -} - -int sunxi_usbc_vbus_detect(int index) -{ - struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index]; - int err, retries = 3; - - if (sunxi_usbc->gpio_vbus_det == -1) { - eprintf("Error: invalid vbus detection pin\n"); - return -1; - } - - err = gpio_get_value(sunxi_usbc->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(sunxi_usbc->gpio_vbus_det); - } - - return err; -} |