1 /*
2 * OMAP7xx specific gpio init
3 *
4 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * Author:
7 * Charulatha V <charu@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation version 2.
12 *
13 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
14 * kind, whether express or implied; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19 #include <linux/gpio.h>
20
21 #define OMAP7XX_GPIO1_BASE 0xfffbc000
22 #define OMAP7XX_GPIO2_BASE 0xfffbc800
23 #define OMAP7XX_GPIO3_BASE 0xfffbd000
24 #define OMAP7XX_GPIO4_BASE 0xfffbd800
25 #define OMAP7XX_GPIO5_BASE 0xfffbe000
26 #define OMAP7XX_GPIO6_BASE 0xfffbe800
27 #define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
28
29 /* mpu gpio */
30 static struct __initdata resource omap7xx_mpu_gpio_resources[] = {
31 {
32 .start = OMAP1_MPUIO_VBASE,
33 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1,
34 .flags = IORESOURCE_MEM,
35 },
36 {
37 .start = INT_7XX_MPUIO,
38 .flags = IORESOURCE_IRQ,
39 },
40 };
41
42 static struct omap_gpio_reg_offs omap7xx_mpuio_regs = {
43 .revision = USHRT_MAX,
44 .direction = OMAP_MPUIO_IO_CNTL / 2,
45 .datain = OMAP_MPUIO_INPUT_LATCH / 2,
46 .dataout = OMAP_MPUIO_OUTPUT / 2,
47 .irqstatus = OMAP_MPUIO_GPIO_INT / 2,
48 .irqenable = OMAP_MPUIO_GPIO_MASKIT / 2,
49 .irqenable_inv = true,
50 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE >> 1,
51 };
52
53 static struct __initdata omap_gpio_platform_data omap7xx_mpu_gpio_config = {
54 .virtual_irq_start = IH_MPUIO_BASE,
55 .is_mpuio = true,
56 .bank_width = 16,
57 .bank_stride = 2,
58 .regs = &omap7xx_mpuio_regs,
59 };
60
61 static struct platform_device omap7xx_mpu_gpio = {
62 .name = "omap_gpio",
63 .id = 0,
64 .dev = {
65 .platform_data = &omap7xx_mpu_gpio_config,
66 },
67 .num_resources = ARRAY_SIZE(omap7xx_mpu_gpio_resources),
68 .resource = omap7xx_mpu_gpio_resources,
69 };
70
71 /* gpio1 */
72 static struct __initdata resource omap7xx_gpio1_resources[] = {
73 {
74 .start = OMAP7XX_GPIO1_BASE,
75 .end = OMAP7XX_GPIO1_BASE + SZ_2K - 1,
76 .flags = IORESOURCE_MEM,
77 },
78 {
79 .start = INT_7XX_GPIO_BANK1,
80 .flags = IORESOURCE_IRQ,
81 },
82 };
83
84 static struct omap_gpio_reg_offs omap7xx_gpio_regs = {
85 .revision = USHRT_MAX,
86 .direction = OMAP7XX_GPIO_DIR_CONTROL,
87 .datain = OMAP7XX_GPIO_DATA_INPUT,
88 .dataout = OMAP7XX_GPIO_DATA_OUTPUT,
89 .irqstatus = OMAP7XX_GPIO_INT_STATUS,
90 .irqenable = OMAP7XX_GPIO_INT_MASK,
91 .irqenable_inv = true,
92 .irqctrl = OMAP7XX_GPIO_INT_CONTROL,
93 };
94
95 static struct __initdata omap_gpio_platform_data omap7xx_gpio1_config = {
96 .virtual_irq_start = IH_GPIO_BASE,
97 .bank_width = 32,
98 .regs = &omap7xx_gpio_regs,
99 };
100
101 static struct platform_device omap7xx_gpio1 = {
102 .name = "omap_gpio",
103 .id = 1,
104 .dev = {
105 .platform_data = &omap7xx_gpio1_config,
106 },
107 .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
108 .resource = omap7xx_gpio1_resources,
109 };
110
111 /* gpio2 */
112 static struct __initdata resource omap7xx_gpio2_resources[] = {
113 {
114 .start = OMAP7XX_GPIO2_BASE,
115 .end = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
116 .flags = IORESOURCE_MEM,
117 },
118 {
119 .start = INT_7XX_GPIO_BANK2,
120 .flags = IORESOURCE_IRQ,
121 },
122 };
123
124 static struct __initdata omap_gpio_platform_data omap7xx_gpio2_config = {
125 .virtual_irq_start = IH_GPIO_BASE + 32,
126 .bank_width = 32,
127 .regs = &omap7xx_gpio_regs,
128 };
129
130 static struct platform_device omap7xx_gpio2 = {
131 .name = "omap_gpio",
132 .id = 2,
133 .dev = {
134 .platform_data = &omap7xx_gpio2_config,
135 },
136 .num_resources = ARRAY_SIZE(omap7xx_gpio2_resources),
137 .resource = omap7xx_gpio2_resources,
138 };
139
140 /* gpio3 */
141 static struct __initdata resource omap7xx_gpio3_resources[] = {
142 {
143 .start = OMAP7XX_GPIO3_BASE,
144 .end = OMAP7XX_GPIO3_BASE + SZ_2K - 1,
145 .flags = IORESOURCE_MEM,
146 },
147 {
148 .start = INT_7XX_GPIO_BANK3,
149 .flags = IORESOURCE_IRQ,
150 },
151 };
152
153 static struct __initdata omap_gpio_platform_data omap7xx_gpio3_config = {
154 .virtual_irq_start = IH_GPIO_BASE + 64,
155 .bank_width = 32,
156 .regs = &omap7xx_gpio_regs,
157 };
158
159 static struct platform_device omap7xx_gpio3 = {
160 .name = "omap_gpio",
161 .id = 3,
162 .dev = {
163 .platform_data = &omap7xx_gpio3_config,
164 },
165 .num_resources = ARRAY_SIZE(omap7xx_gpio3_resources),
166 .resource = omap7xx_gpio3_resources,
167 };
168
169 /* gpio4 */
170 static struct __initdata resource omap7xx_gpio4_resources[] = {
171 {
172 .start = OMAP7XX_GPIO4_BASE,
173 .end = OMAP7XX_GPIO4_BASE + SZ_2K - 1,
174 .flags = IORESOURCE_MEM,
175 },
176 {
177 .start = INT_7XX_GPIO_BANK4,
178 .flags = IORESOURCE_IRQ,
179 },
180 };
181
182 static struct __initdata omap_gpio_platform_data omap7xx_gpio4_config = {
183 .virtual_irq_start = IH_GPIO_BASE + 96,
184 .bank_width = 32,
185 .regs = &omap7xx_gpio_regs,
186 };
187
188 static struct platform_device omap7xx_gpio4 = {
189 .name = "omap_gpio",
190 .id = 4,
191 .dev = {
192 .platform_data = &omap7xx_gpio4_config,
193 },
194 .num_resources = ARRAY_SIZE(omap7xx_gpio4_resources),
195 .resource = omap7xx_gpio4_resources,
196 };
197
198 /* gpio5 */
199 static struct __initdata resource omap7xx_gpio5_resources[] = {
200 {
201 .start = OMAP7XX_GPIO5_BASE,
202 .end = OMAP7XX_GPIO5_BASE + SZ_2K - 1,
203 .flags = IORESOURCE_MEM,
204 },
205 {
206 .start = INT_7XX_GPIO_BANK5,
207 .flags = IORESOURCE_IRQ,
208 },
209 };
210
211 static struct __initdata omap_gpio_platform_data omap7xx_gpio5_config = {
212 .virtual_irq_start = IH_GPIO_BASE + 128,
213 .bank_width = 32,
214 .regs = &omap7xx_gpio_regs,
215 };
216
217 static struct platform_device omap7xx_gpio5 = {
218 .name = "omap_gpio",
219 .id = 5,
220 .dev = {
221 .platform_data = &omap7xx_gpio5_config,
222 },
223 .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
224 .resource = omap7xx_gpio5_resources,
225 };
226
227 /* gpio6 */
228 static struct __initdata resource omap7xx_gpio6_resources[] = {
229 {
230 .start = OMAP7XX_GPIO6_BASE,
231 .end = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
232 .flags = IORESOURCE_MEM,
233 },
234 {
235 .start = INT_7XX_GPIO_BANK6,
236 .flags = IORESOURCE_IRQ,
237 },
238 };
239
240 static struct __initdata omap_gpio_platform_data omap7xx_gpio6_config = {
241 .virtual_irq_start = IH_GPIO_BASE + 160,
242 .bank_width = 32,
243 .regs = &omap7xx_gpio_regs,
244 };
245
246 static struct platform_device omap7xx_gpio6 = {
247 .name = "omap_gpio",
248 .id = 6,
249 .dev = {
250 .platform_data = &omap7xx_gpio6_config,
251 },
252 .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
253 .resource = omap7xx_gpio6_resources,
254 };
255
256 static struct __initdata platform_device * omap7xx_gpio_dev[] = {
257 &omap7xx_mpu_gpio,
258 &omap7xx_gpio1,
259 &omap7xx_gpio2,
260 &omap7xx_gpio3,
261 &omap7xx_gpio4,
262 &omap7xx_gpio5,
263 &omap7xx_gpio6,
264 };
265
266 /*
267 * omap7xx_gpio_init needs to be done before
268 * machine_init functions access gpio APIs.
269 * Hence omap7xx_gpio_init is a postcore_initcall.
270 */
omap7xx_gpio_init(void)271 static int __init omap7xx_gpio_init(void)
272 {
273 int i;
274
275 if (!cpu_is_omap7xx())
276 return -EINVAL;
277
278 for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
279 platform_device_register(omap7xx_gpio_dev[i]);
280
281 return 0;
282 }
283 postcore_initcall(omap7xx_gpio_init);
284