2 * Atheros AR7XXX/AR9XXX USB Host Controller device
4 * Copyright (C) 2008-2011 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/irq.h>
18 #include <linux/dma-mapping.h>
19 #include <linux/platform_device.h>
20 #include <linux/usb/ehci_pdriver.h>
21 #include <linux/usb/ohci_pdriver.h>
23 #include <asm/mach-ath79/ath79.h>
24 #include <asm/mach-ath79/ar71xx_regs.h>
28 static struct resource ath79_ohci_resources[2];
30 static u64 ath79_ohci_dmamask = DMA_BIT_MASK(32);
32 static struct usb_ohci_pdata ath79_ohci_pdata = {
35 static struct platform_device ath79_ohci_device = {
36 .name = "ohci-platform",
38 .resource = ath79_ohci_resources,
39 .num_resources = ARRAY_SIZE(ath79_ohci_resources),
41 .dma_mask = &ath79_ohci_dmamask,
42 .coherent_dma_mask = DMA_BIT_MASK(32),
43 .platform_data = &ath79_ohci_pdata,
47 static struct resource ath79_ehci_resources[2];
49 static u64 ath79_ehci_dmamask = DMA_BIT_MASK(32);
51 static struct usb_ehci_pdata ath79_ehci_pdata_v1 = {
52 .has_synopsys_hc_bug = 1,
56 static struct usb_ehci_pdata ath79_ehci_pdata_v2 = {
62 static struct platform_device ath79_ehci_device = {
63 .name = "ehci-platform",
65 .resource = ath79_ehci_resources,
66 .num_resources = ARRAY_SIZE(ath79_ehci_resources),
68 .dma_mask = &ath79_ehci_dmamask,
69 .coherent_dma_mask = DMA_BIT_MASK(32),
73 static void __init ath79_usb_init_resource(struct resource res[2],
78 res[0].flags = IORESOURCE_MEM;
80 res[0].end = base + size - 1;
82 res[1].flags = IORESOURCE_IRQ;
87 #define AR71XX_USB_RESET_MASK (AR71XX_RESET_USB_HOST | \
88 AR71XX_RESET_USB_PHY | \
89 AR71XX_RESET_USB_OHCI_DLL)
91 static void __init ath79_usb_setup(void)
93 void __iomem *usb_ctrl_base;
95 ath79_device_reset_set(AR71XX_USB_RESET_MASK);
97 ath79_device_reset_clear(AR71XX_USB_RESET_MASK);
99 usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE);
101 /* Turning on the Buff and Desc swap bits */
102 __raw_writel(0xf0000, usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG);
104 /* WAR for HW bug. Here it adjusts the duration between two SOFS */
105 __raw_writel(0x20c00, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
107 iounmap(usb_ctrl_base);
111 ath79_usb_init_resource(ath79_ohci_resources, AR71XX_OHCI_BASE,
112 AR71XX_OHCI_SIZE, ATH79_MISC_IRQ_OHCI);
113 platform_device_register(&ath79_ohci_device);
115 ath79_usb_init_resource(ath79_ehci_resources, AR71XX_EHCI_BASE,
116 AR71XX_EHCI_SIZE, ATH79_CPU_IRQ_USB);
117 ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v1;
118 platform_device_register(&ath79_ehci_device);
121 static void __init ar7240_usb_setup(void)
123 void __iomem *usb_ctrl_base;
125 ath79_device_reset_clear(AR7240_RESET_OHCI_DLL);
126 ath79_device_reset_set(AR7240_RESET_USB_HOST);
130 ath79_device_reset_set(AR7240_RESET_OHCI_DLL);
131 ath79_device_reset_clear(AR7240_RESET_USB_HOST);
133 usb_ctrl_base = ioremap(AR7240_USB_CTRL_BASE, AR7240_USB_CTRL_SIZE);
135 /* WAR for HW bug. Here it adjusts the duration between two SOFS */
136 __raw_writel(0x3, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
138 iounmap(usb_ctrl_base);
140 ath79_usb_init_resource(ath79_ohci_resources, AR7240_OHCI_BASE,
141 AR7240_OHCI_SIZE, ATH79_CPU_IRQ_USB);
142 platform_device_register(&ath79_ohci_device);
145 static void __init ar724x_usb_setup(void)
147 ath79_device_reset_set(AR724X_RESET_USBSUS_OVERRIDE);
150 ath79_device_reset_clear(AR724X_RESET_USB_HOST);
153 ath79_device_reset_clear(AR724X_RESET_USB_PHY);
156 ath79_usb_init_resource(ath79_ehci_resources, AR724X_EHCI_BASE,
157 AR724X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
158 ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
159 platform_device_register(&ath79_ehci_device);
162 static void __init ar913x_usb_setup(void)
164 ath79_device_reset_set(AR913X_RESET_USBSUS_OVERRIDE);
167 ath79_device_reset_clear(AR913X_RESET_USB_HOST);
170 ath79_device_reset_clear(AR913X_RESET_USB_PHY);
173 ath79_usb_init_resource(ath79_ehci_resources, AR913X_EHCI_BASE,
174 AR913X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
175 ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
176 platform_device_register(&ath79_ehci_device);
179 static void __init ar933x_usb_setup(void)
181 ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
184 ath79_device_reset_clear(AR933X_RESET_USB_HOST);
187 ath79_device_reset_clear(AR933X_RESET_USB_PHY);
190 ath79_usb_init_resource(ath79_ehci_resources, AR933X_EHCI_BASE,
191 AR933X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
192 ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
193 platform_device_register(&ath79_ehci_device);
196 static void __init ar934x_usb_setup(void)
200 bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
201 if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
204 ath79_device_reset_set(AR934X_RESET_USBSUS_OVERRIDE);
207 ath79_device_reset_clear(AR934X_RESET_USB_PHY);
210 ath79_device_reset_clear(AR934X_RESET_USB_PHY_ANALOG);
213 ath79_device_reset_clear(AR934X_RESET_USB_HOST);
216 ath79_usb_init_resource(ath79_ehci_resources, AR934X_EHCI_BASE,
217 AR934X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
218 ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
219 platform_device_register(&ath79_ehci_device);
222 void __init ath79_register_usb(void)
226 else if (soc_is_ar7240())
228 else if (soc_is_ar7241() || soc_is_ar7242())
230 else if (soc_is_ar913x())
232 else if (soc_is_ar933x())
234 else if (soc_is_ar934x())