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27eb9758 | 1 | /* |
35c9221a | 2 | * linux/arch/arm/mach-w90x900/mfp.c |
27eb9758 | 3 | * |
4 | * Copyright (c) 2008 Nuvoton technology corporation | |
5 | * | |
6 | * Wan ZongShun <mcuos.com@gmail.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation;version 2 of the License. | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/list.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/err.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/clk.h> | |
21 | #include <linux/mutex.h> | |
22 | #include <linux/io.h> | |
23 | ||
24 | #include <mach/hardware.h> | |
25 | ||
26 | #define REG_MFSEL (W90X900_VA_GCR + 0xC) | |
27 | ||
28 | #define GPSELF (0x01 << 1) | |
27eb9758 | 29 | #define GPSELC (0x03 << 2) |
798681bf | 30 | #define GPSELD (0x0f << 4) |
27eb9758 | 31 | |
32 | #define GPSELEI0 (0x01 << 26) | |
33 | #define GPSELEI1 (0x01 << 27) | |
34 | ||
3f3f1d9d | 35 | #define GPIOG0TO1 (0x03 << 14) |
36 | #define GPIOG2TO3 (0x03 << 16) | |
3d34a0d8 | 37 | #define GPIOG22TO23 (0x03 << 22) |
798681bf | 38 | #define GPIOG18TO20 (0x07 << 18) |
3d34a0d8 | 39 | |
3f3f1d9d | 40 | #define ENSPI (0x0a << 14) |
41 | #define ENI2C0 (0x01 << 14) | |
42 | #define ENI2C1 (0x01 << 16) | |
3d34a0d8 | 43 | #define ENAC97 (0x02 << 22) |
798681bf | 44 | #define ENSD1 (0x02 << 18) |
45 | #define ENSD0 (0x0a << 4) | |
46 | #define ENKPI (0x02 << 2) | |
47 | #define ENNAND (0x01 << 2) | |
3f3f1d9d | 48 | |
f346becf | 49 | static DEFINE_MUTEX(mfp_mutex); |
27eb9758 | 50 | |
51 | void mfp_set_groupf(struct device *dev) | |
52 | { | |
53 | unsigned long mfpen; | |
54 | const char *dev_id; | |
55 | ||
56 | BUG_ON(!dev); | |
57 | ||
f346becf | 58 | mutex_lock(&mfp_mutex); |
27eb9758 | 59 | |
60 | dev_id = dev_name(dev); | |
61 | ||
62 | mfpen = __raw_readl(REG_MFSEL); | |
63 | ||
35c9221a | 64 | if (strcmp(dev_id, "nuc900-emc") == 0) |
27eb9758 | 65 | mfpen |= GPSELF;/*enable mac*/ |
66 | else | |
67 | mfpen &= ~GPSELF;/*GPIOF[9:0]*/ | |
68 | ||
69 | __raw_writel(mfpen, REG_MFSEL); | |
70 | ||
f346becf | 71 | mutex_unlock(&mfp_mutex); |
27eb9758 | 72 | } |
73 | EXPORT_SYMBOL(mfp_set_groupf); | |
74 | ||
75 | void mfp_set_groupc(struct device *dev) | |
76 | { | |
77 | unsigned long mfpen; | |
78 | const char *dev_id; | |
79 | ||
80 | BUG_ON(!dev); | |
81 | ||
f346becf | 82 | mutex_lock(&mfp_mutex); |
27eb9758 | 83 | |
84 | dev_id = dev_name(dev); | |
85 | ||
86 | mfpen = __raw_readl(REG_MFSEL); | |
87 | ||
35c9221a | 88 | if (strcmp(dev_id, "nuc900-lcd") == 0) |
27eb9758 | 89 | mfpen |= GPSELC;/*enable lcd*/ |
35c9221a | 90 | else if (strcmp(dev_id, "nuc900-kpi") == 0) { |
91 | mfpen &= (~GPSELC);/*enable kpi*/ | |
92 | mfpen |= ENKPI; | |
93 | } else if (strcmp(dev_id, "nuc900-nand") == 0) { | |
94 | mfpen &= (~GPSELC);/*enable nand*/ | |
95 | mfpen |= ENNAND; | |
96 | } else | |
97 | mfpen &= (~GPSELC);/*GPIOC[14:0]*/ | |
27eb9758 | 98 | |
99 | __raw_writel(mfpen, REG_MFSEL); | |
100 | ||
f346becf | 101 | mutex_unlock(&mfp_mutex); |
27eb9758 | 102 | } |
103 | EXPORT_SYMBOL(mfp_set_groupc); | |
104 | ||
0abe1856 | 105 | void mfp_set_groupi(struct device *dev) |
27eb9758 | 106 | { |
107 | unsigned long mfpen; | |
108 | const char *dev_id; | |
109 | ||
110 | BUG_ON(!dev); | |
111 | ||
f346becf | 112 | mutex_lock(&mfp_mutex); |
27eb9758 | 113 | |
114 | dev_id = dev_name(dev); | |
115 | ||
116 | mfpen = __raw_readl(REG_MFSEL); | |
117 | ||
0abe1856 | 118 | mfpen &= ~GPSELEI1;/*default gpio16*/ |
119 | ||
35c9221a | 120 | if (strcmp(dev_id, "nuc900-wdog") == 0) |
27eb9758 | 121 | mfpen |= GPSELEI1;/*enable wdog*/ |
35c9221a | 122 | else if (strcmp(dev_id, "nuc900-atapi") == 0) |
123 | mfpen |= GPSELEI0;/*enable atapi*/ | |
124 | else if (strcmp(dev_id, "nuc900-keypad") == 0) | |
125 | mfpen &= ~GPSELEI0;/*enable keypad*/ | |
27eb9758 | 126 | |
127 | __raw_writel(mfpen, REG_MFSEL); | |
128 | ||
f346becf | 129 | mutex_unlock(&mfp_mutex); |
27eb9758 | 130 | } |
131 | EXPORT_SYMBOL(mfp_set_groupi); | |
132 | ||
798681bf | 133 | void mfp_set_groupg(struct device *dev, const char *subname) |
3f3f1d9d | 134 | { |
135 | unsigned long mfpen; | |
136 | const char *dev_id; | |
137 | ||
798681bf | 138 | BUG_ON((!dev) && (!subname)); |
3f3f1d9d | 139 | |
f346becf | 140 | mutex_lock(&mfp_mutex); |
3f3f1d9d | 141 | |
798681bf | 142 | if (subname != NULL) |
143 | dev_id = subname; | |
144 | else | |
145 | dev_id = dev_name(dev); | |
3f3f1d9d | 146 | |
147 | mfpen = __raw_readl(REG_MFSEL); | |
148 | ||
35c9221a | 149 | if (strcmp(dev_id, "nuc900-spi") == 0) { |
3f3f1d9d | 150 | mfpen &= ~(GPIOG0TO1 | GPIOG2TO3); |
151 | mfpen |= ENSPI;/*enable spi*/ | |
35c9221a | 152 | } else if (strcmp(dev_id, "nuc900-i2c0") == 0) { |
3f3f1d9d | 153 | mfpen &= ~(GPIOG0TO1); |
154 | mfpen |= ENI2C0;/*enable i2c0*/ | |
35c9221a | 155 | } else if (strcmp(dev_id, "nuc900-i2c1") == 0) { |
3f3f1d9d | 156 | mfpen &= ~(GPIOG2TO3); |
157 | mfpen |= ENI2C1;/*enable i2c1*/ | |
3d34a0d8 | 158 | } else if (strcmp(dev_id, "nuc900-audio") == 0) { |
159 | mfpen &= ~(GPIOG22TO23); | |
160 | mfpen |= ENAC97;/*enable AC97*/ | |
798681bf | 161 | } else if (strcmp(dev_id, "nuc900-mmc-port1") == 0) { |
162 | mfpen &= ~(GPIOG18TO20); | |
163 | mfpen |= (ENSD1 | 0x01);/*enable sd1*/ | |
3f3f1d9d | 164 | } else { |
165 | mfpen &= ~(GPIOG0TO1 | GPIOG2TO3);/*GPIOG[3:0]*/ | |
166 | } | |
167 | ||
168 | __raw_writel(mfpen, REG_MFSEL); | |
169 | ||
f346becf | 170 | mutex_unlock(&mfp_mutex); |
3f3f1d9d | 171 | } |
172 | EXPORT_SYMBOL(mfp_set_groupg); | |
173 | ||
798681bf | 174 | void mfp_set_groupd(struct device *dev, const char *subname) |
175 | { | |
176 | unsigned long mfpen; | |
177 | const char *dev_id; | |
178 | ||
179 | BUG_ON((!dev) && (!subname)); | |
180 | ||
181 | mutex_lock(&mfp_mutex); | |
182 | ||
183 | if (subname != NULL) | |
184 | dev_id = subname; | |
185 | else | |
186 | dev_id = dev_name(dev); | |
187 | ||
188 | mfpen = __raw_readl(REG_MFSEL); | |
189 | ||
190 | if (strcmp(dev_id, "nuc900-mmc-port0") == 0) { | |
191 | mfpen &= ~GPSELD;/*enable sd0*/ | |
192 | mfpen |= ENSD0; | |
193 | } else | |
194 | mfpen &= (~GPSELD); | |
195 | ||
196 | __raw_writel(mfpen, REG_MFSEL); | |
197 | ||
198 | mutex_unlock(&mfp_mutex); | |
199 | } | |
200 | EXPORT_SYMBOL(mfp_set_groupd); |