diff options
Diffstat (limited to 'target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/dev-usb.c')
| -rw-r--r-- | target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/dev-usb.c | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/dev-usb.c b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/dev-usb.c new file mode 100644 index 000000000..57c7ef292 --- /dev/null +++ b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/dev-usb.c @@ -0,0 +1,246 @@ +/* + * Atheros AR71xx USB host device support + * + * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/platform_device.h> + +#include <asm/mach-ar71xx/ar71xx.h> +#include <asm/mach-ar71xx/platform.h> + +#include "dev-usb.h" + +/* + * OHCI (USB full speed host controller) + */ +static struct resource ar71xx_ohci_resources[] = { + [0] = { + .start = AR71XX_OHCI_BASE, + .end = AR71XX_OHCI_BASE + AR71XX_OHCI_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AR71XX_MISC_IRQ_OHCI, + .end = AR71XX_MISC_IRQ_OHCI, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource ar7240_ohci_resources[] = { + [0] = { + .start = AR7240_OHCI_BASE, + .end = AR7240_OHCI_BASE + AR7240_OHCI_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AR71XX_CPU_IRQ_USB, + .end = AR71XX_CPU_IRQ_USB, + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 ar71xx_ohci_dmamask = DMA_BIT_MASK(32); +static struct platform_device ar71xx_ohci_device = { + .name = "ar71xx-ohci", + .id = -1, + .resource = ar71xx_ohci_resources, + .num_resources = ARRAY_SIZE(ar71xx_ohci_resources), + .dev = { + .dma_mask = &ar71xx_ohci_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +/* + * EHCI (USB high/full speed host controller) + */ +static struct resource ar71xx_ehci_resources[] = { + [0] = { + .start = AR71XX_EHCI_BASE, + .end = AR71XX_EHCI_BASE + AR71XX_EHCI_SIZE - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AR71XX_CPU_IRQ_USB, + .end = AR71XX_CPU_IRQ_USB, + .flags = IORESOURCE_IRQ, + }, +}; + +static u64 ar71xx_ehci_dmamask = DMA_BIT_MASK(32); +static struct ar71xx_ehci_platform_data ar71xx_ehci_data; + +static struct platform_device ar71xx_ehci_device = { + .name = "ar71xx-ehci", + .id = -1, + .resource = ar71xx_ehci_resources, + .num_resources = ARRAY_SIZE(ar71xx_ehci_resources), + .dev = { + .dma_mask = &ar71xx_ehci_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &ar71xx_ehci_data, + }, +}; + +#define AR71XX_USB_RESET_MASK \ + (RESET_MODULE_USB_HOST | RESET_MODULE_USB_PHY \ + | RESET_MODULE_USB_OHCI_DLL) + +#define AR7240_USB_RESET_MASK \ + (RESET_MODULE_USB_HOST | RESET_MODULE_USB_OHCI_DLL_7240) + +static void __init ar71xx_usb_setup(void) +{ + ar71xx_device_stop(AR71XX_USB_RESET_MASK); + mdelay(1000); + ar71xx_device_start(AR71XX_USB_RESET_MASK); + + /* Turning on the Buff and Desc swap bits */ + ar71xx_usb_ctrl_wr(USB_CTRL_REG_CONFIG, 0xf0000); + + /* WAR for HW bug. Here it adjusts the duration between two SOFS */ + ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x20c00); + + mdelay(900); + + platform_device_register(&ar71xx_ohci_device); + platform_device_register(&ar71xx_ehci_device); +} + +static void __init ar7240_usb_setup(void) +{ + ar71xx_device_stop(AR7240_USB_RESET_MASK); + mdelay(1000); + ar71xx_device_start(AR7240_USB_RESET_MASK); + + /* WAR for HW bug. Here it adjusts the duration between two SOFS */ + ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x3); + + ar71xx_ohci_device.resource = ar7240_ohci_resources; + ar71xx_ohci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources); + platform_device_register(&ar71xx_ohci_device); +} + +static void __init ar7241_usb_setup(void) +{ + ar71xx_device_start(AR724X_RESET_USBSUS_OVERRIDE); + mdelay(10); + + ar71xx_device_start(AR724X_RESET_USB_HOST); + mdelay(10); + + ar71xx_device_start(AR724X_RESET_USB_PHY); + mdelay(10); + + ar71xx_ehci_data.is_ar91xx = 1; + ar71xx_ehci_device.resource = ar7240_ohci_resources; + ar71xx_ehci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources); + platform_device_register(&ar71xx_ehci_device); +} + +static void __init ar91xx_usb_setup(void) +{ + ar71xx_device_stop(RESET_MODULE_USBSUS_OVERRIDE); + mdelay(10); + + ar71xx_device_start(RESET_MODULE_USB_HOST); + mdelay(10); + + ar71xx_device_start(RESET_MODULE_USB_PHY); + mdelay(10); + + ar71xx_ehci_data.is_ar91xx = 1; + platform_device_register(&ar71xx_ehci_device); +} + +static void __init ar933x_usb_setup(void) +{ + ar71xx_device_reset_rmw(0, AR933X_RESET_USBSUS_OVERRIDE); + mdelay(10); + + ar71xx_device_reset_rmw(AR933X_RESET_USB_HOST, + AR933X_RESET_USBSUS_OVERRIDE); + mdelay(10); + + ar71xx_device_reset_rmw(AR933X_RESET_USB_PHY, + AR933X_RESET_USBSUS_OVERRIDE); + mdelay(10); + + ar71xx_ehci_data.is_ar91xx = 1; + platform_device_register(&ar71xx_ehci_device); +} + +static void __init ar934x_usb_setup(void) +{ + u32 bootstrap; + + bootstrap = ar71xx_reset_rr(AR934X_RESET_REG_BOOTSTRAP); + if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE) + return; + + ar71xx_device_stop(AR934X_RESET_USBSUS_OVERRIDE); + udelay(1000); + + ar71xx_device_start(AR934X_RESET_USB_PHY); + udelay(1000); + + ar71xx_device_start(AR934X_RESET_USB_PHY_ANALOG); + udelay(1000); + + ar71xx_device_start(AR934X_RESET_USB_HOST); + udelay(1000); + + ar71xx_ehci_data.is_ar91xx = 1; + platform_device_register(&ar71xx_ehci_device); +} + +void __init ar71xx_add_device_usb(void) +{ + switch (ar71xx_soc) { + case AR71XX_SOC_AR7240: + ar7240_usb_setup(); + break; + + case AR71XX_SOC_AR7241: + case AR71XX_SOC_AR7242: + ar7241_usb_setup(); + break; + + case AR71XX_SOC_AR7130: + case AR71XX_SOC_AR7141: + case AR71XX_SOC_AR7161: + ar71xx_usb_setup(); + break; + + case AR71XX_SOC_AR9130: + case AR71XX_SOC_AR9132: + ar91xx_usb_setup(); + break; + + case AR71XX_SOC_AR9330: + case AR71XX_SOC_AR9331: + ar933x_usb_setup(); + break; + + case AR71XX_SOC_AR9341: + case AR71XX_SOC_AR9342: + case AR71XX_SOC_AR9344: + ar934x_usb_setup(); + break; + + default: + BUG(); + } +} |