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>
17 #include <asm/mach-ar71xx/ar71xx.h>
19 static DEFINE_MUTEX(ar71xx_flash_mutex);
21 void __iomem *ar71xx_ddr_base;
22 EXPORT_SYMBOL_GPL(ar71xx_ddr_base);
24 void __iomem *ar71xx_pll_base;
25 EXPORT_SYMBOL_GPL(ar71xx_pll_base);
27 void __iomem *ar71xx_reset_base;
28 EXPORT_SYMBOL_GPL(ar71xx_reset_base);
30 void __iomem *ar71xx_gpio_base;
31 EXPORT_SYMBOL_GPL(ar71xx_gpio_base);
33 void __iomem *ar71xx_usb_ctrl_base;
34 EXPORT_SYMBOL_GPL(ar71xx_usb_ctrl_base);
36 void ar71xx_device_stop(u32 mask)
43 case AR71XX_SOC_AR7130:
44 case AR71XX_SOC_AR7141:
45 case AR71XX_SOC_AR7161:
46 local_irq_save(flags);
47 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
48 ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t | mask);
49 local_irq_restore(flags);
52 case AR71XX_SOC_AR7240:
53 mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
54 local_irq_save(flags);
55 t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
58 ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
59 local_irq_restore(flags);
62 case AR71XX_SOC_AR9130:
63 case AR71XX_SOC_AR9132:
64 local_irq_save(flags);
65 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
66 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t | mask);
67 local_irq_restore(flags);
74 EXPORT_SYMBOL_GPL(ar71xx_device_stop);
76 void ar71xx_device_start(u32 mask)
83 case AR71XX_SOC_AR7130:
84 case AR71XX_SOC_AR7141:
85 case AR71XX_SOC_AR7161:
86 local_irq_save(flags);
87 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
88 ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t & ~mask);
89 local_irq_restore(flags);
92 case AR71XX_SOC_AR7240:
93 mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
94 local_irq_save(flags);
95 t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
98 ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
99 local_irq_restore(flags);
102 case AR71XX_SOC_AR9130:
103 case AR71XX_SOC_AR9132:
104 local_irq_save(flags);
105 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
106 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t & ~mask);
107 local_irq_restore(flags);
114 EXPORT_SYMBOL_GPL(ar71xx_device_start);
116 int ar71xx_device_stopped(u32 mask)
121 switch (ar71xx_soc) {
122 case AR71XX_SOC_AR7130:
123 case AR71XX_SOC_AR7141:
124 case AR71XX_SOC_AR7161:
125 local_irq_save(flags);
126 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
127 local_irq_restore(flags);
130 case AR71XX_SOC_AR7240:
131 local_irq_save(flags);
132 t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
133 local_irq_restore(flags);
136 case AR71XX_SOC_AR9130:
137 case AR71XX_SOC_AR9132:
138 local_irq_save(flags);
139 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
140 local_irq_restore(flags);
147 return ((t & mask) == mask);
149 EXPORT_SYMBOL_GPL(ar71xx_device_stopped);
151 void ar71xx_ddr_flush(u32 reg)
153 ar71xx_ddr_wr(reg, 1);
154 while ((ar71xx_ddr_rr(reg) & 0x1));
156 ar71xx_ddr_wr(reg, 1);
157 while ((ar71xx_ddr_rr(reg) & 0x1));
159 EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
161 void ar71xx_flash_acquire(void)
163 mutex_lock(&ar71xx_flash_mutex);
165 EXPORT_SYMBOL_GPL(ar71xx_flash_acquire);
167 void ar71xx_flash_release(void)
169 mutex_unlock(&ar71xx_flash_mutex);
171 EXPORT_SYMBOL_GPL(ar71xx_flash_release);