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 case AR71XX_SOC_AR7241
:
54 case AR71XX_SOC_AR7242
:
55 mask_inv
= mask
& RESET_MODULE_USB_OHCI_DLL_7240
;
56 local_irq_save(flags
);
57 t
= ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE
);
60 ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE
, t
);
61 local_irq_restore(flags
);
64 case AR71XX_SOC_AR9130
:
65 case AR71XX_SOC_AR9132
:
66 local_irq_save(flags
);
67 t
= ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE
);
68 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE
, t
| mask
);
69 local_irq_restore(flags
);
76 EXPORT_SYMBOL_GPL(ar71xx_device_stop
);
78 void ar71xx_device_start(u32 mask
)
85 case AR71XX_SOC_AR7130
:
86 case AR71XX_SOC_AR7141
:
87 case AR71XX_SOC_AR7161
:
88 local_irq_save(flags
);
89 t
= ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE
);
90 ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE
, t
& ~mask
);
91 local_irq_restore(flags
);
94 case AR71XX_SOC_AR7240
:
95 case AR71XX_SOC_AR7241
:
96 case AR71XX_SOC_AR7242
:
97 mask_inv
= mask
& RESET_MODULE_USB_OHCI_DLL_7240
;
98 local_irq_save(flags
);
99 t
= ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE
);
102 ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE
, t
);
103 local_irq_restore(flags
);
106 case AR71XX_SOC_AR9130
:
107 case AR71XX_SOC_AR9132
:
108 local_irq_save(flags
);
109 t
= ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE
);
110 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE
, t
& ~mask
);
111 local_irq_restore(flags
);
118 EXPORT_SYMBOL_GPL(ar71xx_device_start
);
120 int ar71xx_device_stopped(u32 mask
)
125 switch (ar71xx_soc
) {
126 case AR71XX_SOC_AR7130
:
127 case AR71XX_SOC_AR7141
:
128 case AR71XX_SOC_AR7161
:
129 local_irq_save(flags
);
130 t
= ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE
);
131 local_irq_restore(flags
);
134 case AR71XX_SOC_AR7240
:
135 case AR71XX_SOC_AR7241
:
136 case AR71XX_SOC_AR7242
:
137 local_irq_save(flags
);
138 t
= ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE
);
139 local_irq_restore(flags
);
142 case AR71XX_SOC_AR9130
:
143 case AR71XX_SOC_AR9132
:
144 local_irq_save(flags
);
145 t
= ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE
);
146 local_irq_restore(flags
);
153 return ((t
& mask
) == mask
);
155 EXPORT_SYMBOL_GPL(ar71xx_device_stopped
);
157 void ar71xx_ddr_flush(u32 reg
)
159 ar71xx_ddr_wr(reg
, 1);
160 while ((ar71xx_ddr_rr(reg
) & 0x1));
162 ar71xx_ddr_wr(reg
, 1);
163 while ((ar71xx_ddr_rr(reg
) & 0x1));
165 EXPORT_SYMBOL_GPL(ar71xx_ddr_flush
);
167 void ar71xx_flash_acquire(void)
169 mutex_lock(&ar71xx_flash_mutex
);
171 EXPORT_SYMBOL_GPL(ar71xx_flash_acquire
);
173 void ar71xx_flash_release(void)
175 mutex_unlock(&ar71xx_flash_mutex
);
177 EXPORT_SYMBOL_GPL(ar71xx_flash_release
);