2 * Atheros AR71xx USB host device support
4 * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * Parts of this file are based on Atheros' 2.6.15 BSP
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.
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>
20 #include <asm/mach-ar71xx/ar71xx.h>
21 #include <asm/mach-ar71xx/platform.h>
26 * OHCI (USB full speed host controller)
28 static struct resource ar71xx_ohci_resources[] = {
30 .start = AR71XX_OHCI_BASE,
31 .end = AR71XX_OHCI_BASE + AR71XX_OHCI_SIZE - 1,
32 .flags = IORESOURCE_MEM,
35 .start = AR71XX_MISC_IRQ_OHCI,
36 .end = AR71XX_MISC_IRQ_OHCI,
37 .flags = IORESOURCE_IRQ,
41 static struct resource ar7240_ohci_resources[] = {
43 .start = AR7240_OHCI_BASE,
44 .end = AR7240_OHCI_BASE + AR7240_OHCI_SIZE - 1,
45 .flags = IORESOURCE_MEM,
48 .start = AR71XX_CPU_IRQ_USB,
49 .end = AR71XX_CPU_IRQ_USB,
50 .flags = IORESOURCE_IRQ,
54 static u64 ar71xx_ohci_dmamask = DMA_BIT_MASK(32);
55 static struct platform_device ar71xx_ohci_device = {
56 .name = "ar71xx-ohci",
58 .resource = ar71xx_ohci_resources,
59 .num_resources = ARRAY_SIZE(ar71xx_ohci_resources),
61 .dma_mask = &ar71xx_ohci_dmamask,
62 .coherent_dma_mask = DMA_BIT_MASK(32),
67 * EHCI (USB high/full speed host controller)
69 static struct resource ar71xx_ehci_resources[] = {
71 .start = AR71XX_EHCI_BASE,
72 .end = AR71XX_EHCI_BASE + AR71XX_EHCI_SIZE - 1,
73 .flags = IORESOURCE_MEM,
76 .start = AR71XX_CPU_IRQ_USB,
77 .end = AR71XX_CPU_IRQ_USB,
78 .flags = IORESOURCE_IRQ,
82 static u64 ar71xx_ehci_dmamask = DMA_BIT_MASK(32);
83 static struct ar71xx_ehci_platform_data ar71xx_ehci_data;
85 static struct platform_device ar71xx_ehci_device = {
86 .name = "ar71xx-ehci",
88 .resource = ar71xx_ehci_resources,
89 .num_resources = ARRAY_SIZE(ar71xx_ehci_resources),
91 .dma_mask = &ar71xx_ehci_dmamask,
92 .coherent_dma_mask = DMA_BIT_MASK(32),
93 .platform_data = &ar71xx_ehci_data,
97 #define AR71XX_USB_RESET_MASK \
98 (RESET_MODULE_USB_HOST | RESET_MODULE_USB_PHY \
99 | RESET_MODULE_USB_OHCI_DLL)
101 #define AR7240_USB_RESET_MASK \
102 (RESET_MODULE_USB_HOST | RESET_MODULE_USB_OHCI_DLL_7240)
104 static void __init ar71xx_usb_setup(void)
106 ar71xx_device_stop(AR71XX_USB_RESET_MASK);
108 ar71xx_device_start(AR71XX_USB_RESET_MASK);
110 /* Turning on the Buff and Desc swap bits */
111 ar71xx_usb_ctrl_wr(USB_CTRL_REG_CONFIG, 0xf0000);
113 /* WAR for HW bug. Here it adjusts the duration between two SOFS */
114 ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x20c00);
118 platform_device_register(&ar71xx_ohci_device);
119 platform_device_register(&ar71xx_ehci_device);
122 static void __init ar7240_usb_setup(void)
124 ar71xx_device_stop(AR7240_USB_RESET_MASK);
126 ar71xx_device_start(AR7240_USB_RESET_MASK);
128 /* WAR for HW bug. Here it adjusts the duration between two SOFS */
129 ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x3);
131 ar71xx_ohci_device.resource = ar7240_ohci_resources;
132 ar71xx_ohci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources);
133 platform_device_register(&ar71xx_ohci_device);
136 static void __init ar7241_usb_setup(void)
138 ar71xx_device_start(AR724X_RESET_USBSUS_OVERRIDE);
141 ar71xx_device_start(AR724X_RESET_USB_HOST);
144 ar71xx_device_start(AR724X_RESET_USB_PHY);
147 ar71xx_ehci_data.is_ar91xx = 1;
148 ar71xx_ehci_device.resource = ar7240_ohci_resources;
149 ar71xx_ehci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources);
150 platform_device_register(&ar71xx_ehci_device);
153 static void __init ar91xx_usb_setup(void)
155 ar71xx_device_stop(RESET_MODULE_USBSUS_OVERRIDE);
158 ar71xx_device_start(RESET_MODULE_USB_HOST);
161 ar71xx_device_start(RESET_MODULE_USB_PHY);
164 ar71xx_ehci_data.is_ar91xx = 1;
165 platform_device_register(&ar71xx_ehci_device);
168 static void __init ar933x_usb_setup(void)
170 ar71xx_device_reset_rmw(0, AR933X_RESET_USBSUS_OVERRIDE);
173 ar71xx_device_reset_rmw(AR933X_RESET_USB_HOST,
174 AR933X_RESET_USBSUS_OVERRIDE);
177 ar71xx_device_reset_rmw(AR933X_RESET_USB_PHY,
178 AR933X_RESET_USBSUS_OVERRIDE);
181 ar71xx_ehci_data.is_ar91xx = 1;
182 platform_device_register(&ar71xx_ehci_device);
185 static void __init ar934x_usb_setup(void)
189 bootstrap = ar71xx_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
190 if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
193 ar71xx_device_stop(AR934X_RESET_USBSUS_OVERRIDE);
196 ar71xx_device_start(AR934X_RESET_USB_PHY);
199 ar71xx_device_start(AR934X_RESET_USB_PHY_ANALOG);
202 ar71xx_device_start(AR934X_RESET_USB_HOST);
205 ar71xx_ehci_data.is_ar91xx = 1;
206 platform_device_register(&ar71xx_ehci_device);
209 void __init ar71xx_add_device_usb(void)
211 switch (ar71xx_soc) {
212 case AR71XX_SOC_AR7240:
216 case AR71XX_SOC_AR7241:
217 case AR71XX_SOC_AR7242:
221 case AR71XX_SOC_AR7130:
222 case AR71XX_SOC_AR7141:
223 case AR71XX_SOC_AR7161:
227 case AR71XX_SOC_AR9130:
228 case AR71XX_SOC_AR9132:
232 case AR71XX_SOC_AR9330:
233 case AR71XX_SOC_AR9331:
237 case AR71XX_SOC_AR9341:
238 case AR71XX_SOC_AR9342:
239 case AR71XX_SOC_AR9344: