4 * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/types.h>
15 #include <linux/mutex.h>
16 #include <linux/spinlock.h>
18 #include <asm/mach-ar71xx/ar71xx.h>
20 static DEFINE_MUTEX(ar71xx_flash_mutex);
21 static DEFINE_SPINLOCK(ar71xx_device_lock);
23 void __iomem *ar71xx_ddr_base;
24 EXPORT_SYMBOL_GPL(ar71xx_ddr_base);
26 void __iomem *ar71xx_pll_base;
27 EXPORT_SYMBOL_GPL(ar71xx_pll_base);
29 void __iomem *ar71xx_reset_base;
30 EXPORT_SYMBOL_GPL(ar71xx_reset_base);
32 void __iomem *ar71xx_gpio_base;
33 EXPORT_SYMBOL_GPL(ar71xx_gpio_base);
35 void __iomem *ar71xx_usb_ctrl_base;
36 EXPORT_SYMBOL_GPL(ar71xx_usb_ctrl_base);
38 void ar71xx_device_stop(u32 mask)
45 case AR71XX_SOC_AR7130:
46 case AR71XX_SOC_AR7141:
47 case AR71XX_SOC_AR7161:
48 spin_lock_irqsave(&ar71xx_device_lock, flags);
49 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
50 ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t | mask);
51 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
54 case AR71XX_SOC_AR7240:
55 case AR71XX_SOC_AR7241:
56 case AR71XX_SOC_AR7242:
57 mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
58 spin_lock_irqsave(&ar71xx_device_lock, flags);
59 t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
62 ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
63 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
66 case AR71XX_SOC_AR9130:
67 case AR71XX_SOC_AR9132:
68 spin_lock_irqsave(&ar71xx_device_lock, flags);
69 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
70 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t | mask);
71 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
78 EXPORT_SYMBOL_GPL(ar71xx_device_stop);
80 void ar71xx_device_start(u32 mask)
87 case AR71XX_SOC_AR7130:
88 case AR71XX_SOC_AR7141:
89 case AR71XX_SOC_AR7161:
90 spin_lock_irqsave(&ar71xx_device_lock, flags);
91 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
92 ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t & ~mask);
93 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
96 case AR71XX_SOC_AR7240:
97 case AR71XX_SOC_AR7241:
98 case AR71XX_SOC_AR7242:
99 mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
100 spin_lock_irqsave(&ar71xx_device_lock, flags);
101 t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
104 ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
105 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
108 case AR71XX_SOC_AR9130:
109 case AR71XX_SOC_AR9132:
110 spin_lock_irqsave(&ar71xx_device_lock, flags);
111 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
112 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t & ~mask);
113 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
120 EXPORT_SYMBOL_GPL(ar71xx_device_start);
122 int ar71xx_device_stopped(u32 mask)
127 switch (ar71xx_soc) {
128 case AR71XX_SOC_AR7130:
129 case AR71XX_SOC_AR7141:
130 case AR71XX_SOC_AR7161:
131 spin_lock_irqsave(&ar71xx_device_lock, flags);
132 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
133 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
136 case AR71XX_SOC_AR7240:
137 case AR71XX_SOC_AR7241:
138 case AR71XX_SOC_AR7242:
139 spin_lock_irqsave(&ar71xx_device_lock, flags);
140 t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
141 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
144 case AR71XX_SOC_AR9130:
145 case AR71XX_SOC_AR9132:
146 spin_lock_irqsave(&ar71xx_device_lock, flags);
147 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
148 spin_unlock_irqrestore(&ar71xx_device_lock, flags);
155 return ((t & mask) == mask);
157 EXPORT_SYMBOL_GPL(ar71xx_device_stopped);
159 void ar71xx_ddr_flush(u32 reg)
161 ar71xx_ddr_wr(reg, 1);
162 while ((ar71xx_ddr_rr(reg) & 0x1))
165 ar71xx_ddr_wr(reg, 1);
166 while ((ar71xx_ddr_rr(reg) & 0x1))
169 EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
171 void ar71xx_flash_acquire(void)
173 mutex_lock(&ar71xx_flash_mutex);
175 EXPORT_SYMBOL_GPL(ar71xx_flash_acquire);
177 void ar71xx_flash_release(void)
179 mutex_unlock(&ar71xx_flash_mutex);
181 EXPORT_SYMBOL_GPL(ar71xx_flash_release);