diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/ehci-sunxi.c | 213 |
1 files changed, 10 insertions, 203 deletions
diff --git a/drivers/usb/host/ehci-sunxi.c b/drivers/usb/host/ehci-sunxi.c index cc9a8fa71e..eda9f698d9 100644 --- a/drivers/usb/host/ehci-sunxi.c +++ b/drivers/usb/host/ehci-sunxi.c @@ -9,199 +9,23 @@ * SPDX-License-Identifier: GPL-2.0+ */ -#include <asm/arch/clock.h> -#include <asm/arch/cpu.h> -#include <asm/gpio.h> -#include <asm/io.h> +#include <asm/arch/usbc.h> #include <common.h> #include "ehci.h" -#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_ehci_hcd { - struct usb_hcd *hcd; - int usb_rst_mask; - int ahb_clk_mask; - int gpio_vbus; - int irq; - int id; -} sunxi_echi_hcd[] = { - { - .usb_rst_mask = CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK, - .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0, -#ifndef CONFIG_MACH_SUN6I - .irq = 39, -#else - .irq = 72, -#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, -#ifndef CONFIG_MACH_SUN6I - .irq = 40, -#else - .irq = 74, -#endif - .id = 2, - } -#endif -}; - -static int enabled_hcd_count; - -static void *get_io_base(int hcd_id) -{ - switch (hcd_id) { - 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 hcd_id) -{ - switch (hcd_id) { - 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 void usb_phy_write(struct sunxi_ehci_hcd *sunxi_ehci, int addr, - int data, int len) -{ - int j = 0, usbc_bit = 0; - void *dest = get_io_base(0) + SUNXI_USB_CSR; - - usbc_bit = 1 << (sunxi_ehci->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_ehci_hcd *sunxi_ehci) -{ - /* The following comments are machine - * translated from Chinese, you have been warned! - */ - - /* adjust PHY's magnitude and rate */ - usb_phy_write(sunxi_ehci, 0x20, 0x14, 5); - - /* threshold adjustment disconnect */ -#if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN6I - usb_phy_write(sunxi_ehci, 0x2a, 3, 2); -#else - usb_phy_write(sunxi_ehci, 0x2a, 2, 2); -#endif - - return; -} - -static void sunxi_usb_passby(struct sunxi_ehci_hcd *sunxi_ehci, int enable) -{ - unsigned long bits = 0; - void *addr = get_io_base(sunxi_ehci->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; -} - -static void sunxi_ehci_enable(struct sunxi_ehci_hcd *sunxi_ehci) -{ - struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - - setbits_le32(&ccm->usb_clk_cfg, sunxi_ehci->usb_rst_mask); - setbits_le32(&ccm->ahb_gate0, sunxi_ehci->ahb_clk_mask); -#ifdef CONFIG_MACH_SUN6I - setbits_le32(&ccm->ahb_reset0_cfg, sunxi_ehci->ahb_clk_mask); -#endif - - sunxi_usb_phy_init(sunxi_ehci); - - sunxi_usb_passby(sunxi_ehci, SUNXI_USB_PASSBY_EN); - - if (sunxi_ehci->gpio_vbus != -1) - gpio_direction_output(sunxi_ehci->gpio_vbus, 1); -} - -static void sunxi_ehci_disable(struct sunxi_ehci_hcd *sunxi_ehci) -{ - struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - - if (sunxi_ehci->gpio_vbus != -1) - gpio_direction_output(sunxi_ehci->gpio_vbus, 0); - - sunxi_usb_passby(sunxi_ehci, !SUNXI_USB_PASSBY_EN); - -#ifdef CONFIG_MACH_SUN6I - clrbits_le32(&ccm->ahb_reset0_cfg, sunxi_ehci->ahb_clk_mask); -#endif - clrbits_le32(&ccm->ahb_gate0, sunxi_ehci->ahb_clk_mask); - clrbits_le32(&ccm->usb_clk_cfg, sunxi_ehci->usb_rst_mask); -} - int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr, struct ehci_hcor **hcor) { - struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - struct sunxi_ehci_hcd *sunxi_ehci = &sunxi_echi_hcd[index]; int err; - sunxi_ehci->gpio_vbus = get_vbus_gpio(sunxi_ehci->id); + err = sunxi_usbc_request_resources(index + 1); + if (err) + return err; - /* enable common PHY only once */ - if (index == 0) - setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE); + sunxi_usbc_enable(index + 1); + sunxi_usbc_vbus_enable(index + 1); - if (sunxi_ehci->gpio_vbus != -1) { - err = gpio_request(sunxi_ehci->gpio_vbus, "ehci_vbus"); - if (err) - return err; - } - - sunxi_ehci_enable(sunxi_ehci); - - *hccr = get_io_base(sunxi_ehci->id); + *hccr = sunxi_usbc_get_io_base(index + 1); *hcor = (struct ehci_hcor *)((uint32_t) *hccr + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); @@ -210,30 +34,13 @@ int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr, (uint32_t)*hccr, (uint32_t)*hcor, (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); - enabled_hcd_count++; - return 0; } int ehci_hcd_stop(int index) { - struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; - struct sunxi_ehci_hcd *sunxi_ehci = &sunxi_echi_hcd[index]; - int err; - - sunxi_ehci_disable(sunxi_ehci); - - if (sunxi_ehci->gpio_vbus != -1) { - err = gpio_free(sunxi_ehci->gpio_vbus); - if (err) - return err; - } + sunxi_usbc_vbus_disable(index + 1); + sunxi_usbc_disable(index + 1); - /* 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--; - - return 0; + return sunxi_usbc_free_resources(index + 1); } |