| 1 | /* |
| 2 | * Atheros AR71xx USB host device support |
| 3 | * |
| 4 | * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> |
| 5 | * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> |
| 6 | * |
| 7 | * Parts of this file are based on Atheros' 2.6.15 BSP |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU General Public License version 2 as published |
| 11 | * by the Free Software Foundation. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/dma-mapping.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | |
| 20 | #include <asm/mach-ar71xx/ar71xx.h> |
| 21 | #include <asm/mach-ar71xx/platform.h> |
| 22 | |
| 23 | #include "dev-usb.h" |
| 24 | |
| 25 | /* |
| 26 | * OHCI (USB full speed host controller) |
| 27 | */ |
| 28 | static struct resource ar71xx_ohci_resources[] = { |
| 29 | [0] = { |
| 30 | .start = AR71XX_OHCI_BASE, |
| 31 | .end = AR71XX_OHCI_BASE + AR71XX_OHCI_SIZE - 1, |
| 32 | .flags = IORESOURCE_MEM, |
| 33 | }, |
| 34 | [1] = { |
| 35 | .start = AR71XX_MISC_IRQ_OHCI, |
| 36 | .end = AR71XX_MISC_IRQ_OHCI, |
| 37 | .flags = IORESOURCE_IRQ, |
| 38 | }, |
| 39 | }; |
| 40 | |
| 41 | static struct resource ar7240_ohci_resources[] = { |
| 42 | [0] = { |
| 43 | .start = AR7240_OHCI_BASE, |
| 44 | .end = AR7240_OHCI_BASE + AR7240_OHCI_SIZE - 1, |
| 45 | .flags = IORESOURCE_MEM, |
| 46 | }, |
| 47 | [1] = { |
| 48 | .start = AR71XX_CPU_IRQ_USB, |
| 49 | .end = AR71XX_CPU_IRQ_USB, |
| 50 | .flags = IORESOURCE_IRQ, |
| 51 | }, |
| 52 | }; |
| 53 | |
| 54 | static u64 ar71xx_ohci_dmamask = DMA_BIT_MASK(32); |
| 55 | static struct platform_device ar71xx_ohci_device = { |
| 56 | .name = "ar71xx-ohci", |
| 57 | .id = -1, |
| 58 | .resource = ar71xx_ohci_resources, |
| 59 | .num_resources = ARRAY_SIZE(ar71xx_ohci_resources), |
| 60 | .dev = { |
| 61 | .dma_mask = &ar71xx_ohci_dmamask, |
| 62 | .coherent_dma_mask = DMA_BIT_MASK(32), |
| 63 | }, |
| 64 | }; |
| 65 | |
| 66 | /* |
| 67 | * EHCI (USB full speed host controller) |
| 68 | */ |
| 69 | static struct resource ar71xx_ehci_resources[] = { |
| 70 | [0] = { |
| 71 | .start = AR71XX_EHCI_BASE, |
| 72 | .end = AR71XX_EHCI_BASE + AR71XX_EHCI_SIZE - 1, |
| 73 | .flags = IORESOURCE_MEM, |
| 74 | }, |
| 75 | [1] = { |
| 76 | .start = AR71XX_CPU_IRQ_USB, |
| 77 | .end = AR71XX_CPU_IRQ_USB, |
| 78 | .flags = IORESOURCE_IRQ, |
| 79 | }, |
| 80 | }; |
| 81 | |
| 82 | static u64 ar71xx_ehci_dmamask = DMA_BIT_MASK(32); |
| 83 | static struct ar71xx_ehci_platform_data ar71xx_ehci_data; |
| 84 | |
| 85 | static struct platform_device ar71xx_ehci_device = { |
| 86 | .name = "ar71xx-ehci", |
| 87 | .id = -1, |
| 88 | .resource = ar71xx_ehci_resources, |
| 89 | .num_resources = ARRAY_SIZE(ar71xx_ehci_resources), |
| 90 | .dev = { |
| 91 | .dma_mask = &ar71xx_ehci_dmamask, |
| 92 | .coherent_dma_mask = DMA_BIT_MASK(32), |
| 93 | .platform_data = &ar71xx_ehci_data, |
| 94 | }, |
| 95 | }; |
| 96 | |
| 97 | #define AR71XX_USB_RESET_MASK \ |
| 98 | (RESET_MODULE_USB_HOST | RESET_MODULE_USB_PHY \ |
| 99 | | RESET_MODULE_USB_OHCI_DLL) |
| 100 | |
| 101 | #define AR7240_USB_RESET_MASK \ |
| 102 | (RESET_MODULE_USB_HOST | RESET_MODULE_USB_OHCI_DLL_7240) |
| 103 | |
| 104 | static void __init ar71xx_usb_setup(void) |
| 105 | { |
| 106 | ar71xx_device_stop(AR71XX_USB_RESET_MASK); |
| 107 | mdelay(1000); |
| 108 | ar71xx_device_start(AR71XX_USB_RESET_MASK); |
| 109 | |
| 110 | /* Turning on the Buff and Desc swap bits */ |
| 111 | ar71xx_usb_ctrl_wr(USB_CTRL_REG_CONFIG, 0xf0000); |
| 112 | |
| 113 | /* WAR for HW bug. Here it adjusts the duration between two SOFS */ |
| 114 | ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x20c00); |
| 115 | |
| 116 | mdelay(900); |
| 117 | |
| 118 | platform_device_register(&ar71xx_ohci_device); |
| 119 | platform_device_register(&ar71xx_ehci_device); |
| 120 | } |
| 121 | |
| 122 | static void __init ar7240_usb_setup(void) |
| 123 | { |
| 124 | ar71xx_device_stop(AR7240_USB_RESET_MASK); |
| 125 | mdelay(1000); |
| 126 | ar71xx_device_start(AR7240_USB_RESET_MASK); |
| 127 | |
| 128 | /* WAR for HW bug. Here it adjusts the duration between two SOFS */ |
| 129 | ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x3); |
| 130 | |
| 131 | if (ar71xx_soc == AR71XX_SOC_AR7241 || ar71xx_soc == AR71XX_SOC_AR7242) { |
| 132 | ar71xx_ehci_data.is_ar91xx = 1; |
| 133 | ar71xx_ehci_device.resource = ar7240_ohci_resources; |
| 134 | ar71xx_ehci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources); |
| 135 | platform_device_register(&ar71xx_ehci_device); |
| 136 | } else { |
| 137 | ar71xx_ohci_device.resource = ar7240_ohci_resources; |
| 138 | ar71xx_ohci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources); |
| 139 | platform_device_register(&ar71xx_ohci_device); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | static void __init ar91xx_usb_setup(void) |
| 144 | { |
| 145 | ar71xx_device_stop(RESET_MODULE_USBSUS_OVERRIDE); |
| 146 | mdelay(10); |
| 147 | |
| 148 | ar71xx_device_start(RESET_MODULE_USB_HOST); |
| 149 | mdelay(10); |
| 150 | |
| 151 | ar71xx_device_start(RESET_MODULE_USB_PHY); |
| 152 | mdelay(10); |
| 153 | |
| 154 | ar71xx_ehci_data.is_ar91xx = 1; |
| 155 | platform_device_register(&ar71xx_ehci_device); |
| 156 | } |
| 157 | |
| 158 | void __init ar71xx_add_device_usb(void) |
| 159 | { |
| 160 | switch (ar71xx_soc) { |
| 161 | case AR71XX_SOC_AR7240: |
| 162 | case AR71XX_SOC_AR7241: |
| 163 | case AR71XX_SOC_AR7242: |
| 164 | ar7240_usb_setup(); |
| 165 | break; |
| 166 | |
| 167 | case AR71XX_SOC_AR7130: |
| 168 | case AR71XX_SOC_AR7141: |
| 169 | case AR71XX_SOC_AR7161: |
| 170 | ar71xx_usb_setup(); |
| 171 | break; |
| 172 | |
| 173 | case AR71XX_SOC_AR9130: |
| 174 | case AR71XX_SOC_AR9132: |
| 175 | ar91xx_usb_setup(); |
| 176 | break; |
| 177 | |
| 178 | default: |
| 179 | BUG(); |
| 180 | } |
| 181 | } |
| 182 | |
