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The discovered bit in PGCCSR register indicates if the device has been
[linux-2.6/next.git] / drivers / gpio / gpio-s5pv210.c
blobeb12f1602de950fbb9a3201dedf20ad52429dd39
1 /*
2 * S5PV210 - GPIOlib support
3 *
4 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/irq.h>
14 #include <linux/io.h>
15 #include <linux/gpio.h>
16 #include <plat/gpio-core.h>
17 #include <plat/gpio-cfg.h>
18 #include <plat/gpio-cfg-helpers.h>
19 #include <mach/map.h>
20
21 static struct s3c_gpio_cfg gpio_cfg = {
22 .set_config = s3c_gpio_setcfg_s3c64xx_4bit,
23 .set_pull = s3c_gpio_setpull_updown,
24 .get_pull = s3c_gpio_getpull_updown,
25 };
26
27 static struct s3c_gpio_cfg gpio_cfg_noint = {
28 .set_config = s3c_gpio_setcfg_s3c64xx_4bit,
29 .set_pull = s3c_gpio_setpull_updown,
30 .get_pull = s3c_gpio_getpull_updown,
31 };
32
33 /* GPIO bank's base address given the index of the bank in the
34 * list of all gpio banks.
35 */
36 #define S5PV210_BANK_BASE(bank_nr) (S5P_VA_GPIO + ((bank_nr) * 0x20))
37
38 /*
39 * Following are the gpio banks in v210.
40 *
41 * The 'config' member when left to NULL, is initialized to the default
42 * structure gpio_cfg in the init function below.
43 *
44 * The 'base' member is also initialized in the init function below.
45 * Note: The initialization of 'base' member of s3c_gpio_chip structure
46 * uses the above macro and depends on the banks being listed in order here.
47 */
48 static struct s3c_gpio_chip s5pv210_gpio_4bit[] = {
49 {
50 .chip = {
51 .base = S5PV210_GPA0(0),
52 .ngpio = S5PV210_GPIO_A0_NR,
53 .label = "GPA0",
54 },
55 }, {
56 .chip = {
57 .base = S5PV210_GPA1(0),
58 .ngpio = S5PV210_GPIO_A1_NR,
59 .label = "GPA1",
60 },
61 }, {
62 .chip = {
63 .base = S5PV210_GPB(0),
64 .ngpio = S5PV210_GPIO_B_NR,
65 .label = "GPB",
66 },
67 }, {
68 .chip = {
69 .base = S5PV210_GPC0(0),
70 .ngpio = S5PV210_GPIO_C0_NR,
71 .label = "GPC0",
72 },
73 }, {
74 .chip = {
75 .base = S5PV210_GPC1(0),
76 .ngpio = S5PV210_GPIO_C1_NR,
77 .label = "GPC1",
78 },
79 }, {
80 .chip = {
81 .base = S5PV210_GPD0(0),
82 .ngpio = S5PV210_GPIO_D0_NR,
83 .label = "GPD0",
84 },
85 }, {
86 .chip = {
87 .base = S5PV210_GPD1(0),
88 .ngpio = S5PV210_GPIO_D1_NR,
89 .label = "GPD1",
90 },
91 }, {
92 .chip = {
93 .base = S5PV210_GPE0(0),
94 .ngpio = S5PV210_GPIO_E0_NR,
95 .label = "GPE0",
96 },
97 }, {
98 .chip = {
99 .base = S5PV210_GPE1(0),
100 .ngpio = S5PV210_GPIO_E1_NR,
101 .label = "GPE1",
102 },
103 }, {
104 .chip = {
105 .base = S5PV210_GPF0(0),
106 .ngpio = S5PV210_GPIO_F0_NR,
107 .label = "GPF0",
108 },
109 }, {
110 .chip = {
111 .base = S5PV210_GPF1(0),
112 .ngpio = S5PV210_GPIO_F1_NR,
113 .label = "GPF1",
114 },
115 }, {
116 .chip = {
117 .base = S5PV210_GPF2(0),
118 .ngpio = S5PV210_GPIO_F2_NR,
119 .label = "GPF2",
120 },
121 }, {
122 .chip = {
123 .base = S5PV210_GPF3(0),
124 .ngpio = S5PV210_GPIO_F3_NR,
125 .label = "GPF3",
126 },
127 }, {
128 .chip = {
129 .base = S5PV210_GPG0(0),
130 .ngpio = S5PV210_GPIO_G0_NR,
131 .label = "GPG0",
132 },
133 }, {
134 .chip = {
135 .base = S5PV210_GPG1(0),
136 .ngpio = S5PV210_GPIO_G1_NR,
137 .label = "GPG1",
138 },
139 }, {
140 .chip = {
141 .base = S5PV210_GPG2(0),
142 .ngpio = S5PV210_GPIO_G2_NR,
143 .label = "GPG2",
144 },
145 }, {
146 .chip = {
147 .base = S5PV210_GPG3(0),
148 .ngpio = S5PV210_GPIO_G3_NR,
149 .label = "GPG3",
150 },
151 }, {
152 .config = &gpio_cfg_noint,
153 .chip = {
154 .base = S5PV210_GPI(0),
155 .ngpio = S5PV210_GPIO_I_NR,
156 .label = "GPI",
157 },
158 }, {
159 .chip = {
160 .base = S5PV210_GPJ0(0),
161 .ngpio = S5PV210_GPIO_J0_NR,
162 .label = "GPJ0",
163 },
164 }, {
165 .chip = {
166 .base = S5PV210_GPJ1(0),
167 .ngpio = S5PV210_GPIO_J1_NR,
168 .label = "GPJ1",
169 },
170 }, {
171 .chip = {
172 .base = S5PV210_GPJ2(0),
173 .ngpio = S5PV210_GPIO_J2_NR,
174 .label = "GPJ2",
175 },
176 }, {
177 .chip = {
178 .base = S5PV210_GPJ3(0),
179 .ngpio = S5PV210_GPIO_J3_NR,
180 .label = "GPJ3",
181 },
182 }, {
183 .chip = {
184 .base = S5PV210_GPJ4(0),
185 .ngpio = S5PV210_GPIO_J4_NR,
186 .label = "GPJ4",
187 },
188 }, {
189 .config = &gpio_cfg_noint,
190 .chip = {
191 .base = S5PV210_MP01(0),
192 .ngpio = S5PV210_GPIO_MP01_NR,
193 .label = "MP01",
194 },
195 }, {
196 .config = &gpio_cfg_noint,
197 .chip = {
198 .base = S5PV210_MP02(0),
199 .ngpio = S5PV210_GPIO_MP02_NR,
200 .label = "MP02",
201 },
202 }, {
203 .config = &gpio_cfg_noint,
204 .chip = {
205 .base = S5PV210_MP03(0),
206 .ngpio = S5PV210_GPIO_MP03_NR,
207 .label = "MP03",
208 },
209 }, {
210 .config = &gpio_cfg_noint,
211 .chip = {
212 .base = S5PV210_MP04(0),
213 .ngpio = S5PV210_GPIO_MP04_NR,
214 .label = "MP04",
215 },
216 }, {
217 .config = &gpio_cfg_noint,
218 .chip = {
219 .base = S5PV210_MP05(0),
220 .ngpio = S5PV210_GPIO_MP05_NR,
221 .label = "MP05",
222 },
223 }, {
224 .base = (S5P_VA_GPIO + 0xC00),
225 .config = &gpio_cfg_noint,
226 .irq_base = IRQ_EINT(0),
227 .chip = {
228 .base = S5PV210_GPH0(0),
229 .ngpio = S5PV210_GPIO_H0_NR,
230 .label = "GPH0",
231 .to_irq = samsung_gpiolib_to_irq,
232 },
233 }, {
234 .base = (S5P_VA_GPIO + 0xC20),
235 .config = &gpio_cfg_noint,
236 .irq_base = IRQ_EINT(8),
237 .chip = {
238 .base = S5PV210_GPH1(0),
239 .ngpio = S5PV210_GPIO_H1_NR,
240 .label = "GPH1",
241 .to_irq = samsung_gpiolib_to_irq,
242 },
243 }, {
244 .base = (S5P_VA_GPIO + 0xC40),
245 .config = &gpio_cfg_noint,
246 .irq_base = IRQ_EINT(16),
247 .chip = {
248 .base = S5PV210_GPH2(0),
249 .ngpio = S5PV210_GPIO_H2_NR,
250 .label = "GPH2",
251 .to_irq = samsung_gpiolib_to_irq,
252 },
253 }, {
254 .base = (S5P_VA_GPIO + 0xC60),
255 .config = &gpio_cfg_noint,
256 .irq_base = IRQ_EINT(24),
257 .chip = {
258 .base = S5PV210_GPH3(0),
259 .ngpio = S5PV210_GPIO_H3_NR,
260 .label = "GPH3",
261 .to_irq = samsung_gpiolib_to_irq,
262 },
263 },
264 };
265
266 static __init int s5pv210_gpiolib_init(void)
267 {
268 struct s3c_gpio_chip *chip = s5pv210_gpio_4bit;
269 int nr_chips = ARRAY_SIZE(s5pv210_gpio_4bit);
270 int gpioint_group = 0;
271 int i = 0;
272
273 for (i = 0; i < nr_chips; i++, chip++) {
274 if (chip->config == NULL) {
275 chip->config = &gpio_cfg;
276 chip->group = gpioint_group++;
277 }
278 if (chip->base == NULL)
279 chip->base = S5PV210_BANK_BASE(i);
280 }
281
282 samsung_gpiolib_add_4bit_chips(s5pv210_gpio_4bit, nr_chips);
283 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
284
285 return 0;
286 }
287 core_initcall(s5pv210_gpiolib_init);
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