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Linux/arch/arm/mach-omap1/gpio7xx.c

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  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 #include <linux/platform_data/gpio-omap.h>
 21 
 22 #include <mach/irqs.h>
 23 
 24 #include "soc.h"
 25 
 26 #define OMAP7XX_GPIO1_BASE              0xfffbc000
 27 #define OMAP7XX_GPIO2_BASE              0xfffbc800
 28 #define OMAP7XX_GPIO3_BASE              0xfffbd000
 29 #define OMAP7XX_GPIO4_BASE              0xfffbd800
 30 #define OMAP7XX_GPIO5_BASE              0xfffbe000
 31 #define OMAP7XX_GPIO6_BASE              0xfffbe800
 32 #define OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
 33 
 34 /* mpu gpio */
 35 static struct resource omap7xx_mpu_gpio_resources[] = {
 36         {
 37                 .start  = OMAP1_MPUIO_VBASE,
 38                 .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
 39                 .flags  = IORESOURCE_MEM,
 40         },
 41         {
 42                 .start  = INT_7XX_MPUIO,
 43                 .flags  = IORESOURCE_IRQ,
 44         },
 45 };
 46 
 47 static struct omap_gpio_reg_offs omap7xx_mpuio_regs = {
 48         .revision       = USHRT_MAX,
 49         .direction      = OMAP_MPUIO_IO_CNTL / 2,
 50         .datain         = OMAP_MPUIO_INPUT_LATCH / 2,
 51         .dataout        = OMAP_MPUIO_OUTPUT / 2,
 52         .irqstatus      = OMAP_MPUIO_GPIO_INT / 2,
 53         .irqenable      = OMAP_MPUIO_GPIO_MASKIT / 2,
 54         .irqenable_inv  = true,
 55         .irqctrl        = OMAP_MPUIO_GPIO_INT_EDGE >> 1,
 56 };
 57 
 58 static struct omap_gpio_platform_data omap7xx_mpu_gpio_config = {
 59         .is_mpuio               = true,
 60         .bank_width             = 16,
 61         .bank_stride            = 2,
 62         .regs                   = &omap7xx_mpuio_regs,
 63 };
 64 
 65 static struct platform_device omap7xx_mpu_gpio = {
 66         .name           = "omap_gpio",
 67         .id             = 0,
 68         .dev            = {
 69                 .platform_data = &omap7xx_mpu_gpio_config,
 70         },
 71         .num_resources = ARRAY_SIZE(omap7xx_mpu_gpio_resources),
 72         .resource = omap7xx_mpu_gpio_resources,
 73 };
 74 
 75 /* gpio1 */
 76 static struct resource omap7xx_gpio1_resources[] = {
 77         {
 78                 .start  = OMAP7XX_GPIO1_BASE,
 79                 .end    = OMAP7XX_GPIO1_BASE + SZ_2K - 1,
 80                 .flags  = IORESOURCE_MEM,
 81         },
 82         {
 83                 .start  = INT_7XX_GPIO_BANK1,
 84                 .flags  = IORESOURCE_IRQ,
 85         },
 86 };
 87 
 88 static struct omap_gpio_reg_offs omap7xx_gpio_regs = {
 89         .revision       = USHRT_MAX,
 90         .direction      = OMAP7XX_GPIO_DIR_CONTROL,
 91         .datain         = OMAP7XX_GPIO_DATA_INPUT,
 92         .dataout        = OMAP7XX_GPIO_DATA_OUTPUT,
 93         .irqstatus      = OMAP7XX_GPIO_INT_STATUS,
 94         .irqenable      = OMAP7XX_GPIO_INT_MASK,
 95         .irqenable_inv  = true,
 96         .irqctrl        = OMAP7XX_GPIO_INT_CONTROL,
 97 };
 98 
 99 static struct omap_gpio_platform_data omap7xx_gpio1_config = {
100         .bank_width             = 32,
101         .regs                   = &omap7xx_gpio_regs,
102 };
103 
104 static struct platform_device omap7xx_gpio1 = {
105         .name           = "omap_gpio",
106         .id             = 1,
107         .dev            = {
108                 .platform_data = &omap7xx_gpio1_config,
109         },
110         .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
111         .resource = omap7xx_gpio1_resources,
112 };
113 
114 /* gpio2 */
115 static struct resource omap7xx_gpio2_resources[] = {
116         {
117                 .start  = OMAP7XX_GPIO2_BASE,
118                 .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
119                 .flags  = IORESOURCE_MEM,
120         },
121         {
122                 .start  = INT_7XX_GPIO_BANK2,
123                 .flags  = IORESOURCE_IRQ,
124         },
125 };
126 
127 static struct omap_gpio_platform_data omap7xx_gpio2_config = {
128         .bank_width             = 32,
129         .regs                   = &omap7xx_gpio_regs,
130 };
131 
132 static struct platform_device omap7xx_gpio2 = {
133         .name           = "omap_gpio",
134         .id             = 2,
135         .dev            = {
136                 .platform_data = &omap7xx_gpio2_config,
137         },
138         .num_resources = ARRAY_SIZE(omap7xx_gpio2_resources),
139         .resource = omap7xx_gpio2_resources,
140 };
141 
142 /* gpio3 */
143 static struct resource omap7xx_gpio3_resources[] = {
144         {
145                 .start  = OMAP7XX_GPIO3_BASE,
146                 .end    = OMAP7XX_GPIO3_BASE + SZ_2K - 1,
147                 .flags  = IORESOURCE_MEM,
148         },
149         {
150                 .start  = INT_7XX_GPIO_BANK3,
151                 .flags  = IORESOURCE_IRQ,
152         },
153 };
154 
155 static struct omap_gpio_platform_data omap7xx_gpio3_config = {
156         .bank_width             = 32,
157         .regs                   = &omap7xx_gpio_regs,
158 };
159 
160 static struct platform_device omap7xx_gpio3 = {
161         .name           = "omap_gpio",
162         .id             = 3,
163         .dev            = {
164                 .platform_data = &omap7xx_gpio3_config,
165         },
166         .num_resources = ARRAY_SIZE(omap7xx_gpio3_resources),
167         .resource = omap7xx_gpio3_resources,
168 };
169 
170 /* gpio4 */
171 static struct resource omap7xx_gpio4_resources[] = {
172         {
173                 .start  = OMAP7XX_GPIO4_BASE,
174                 .end    = OMAP7XX_GPIO4_BASE + SZ_2K - 1,
175                 .flags  = IORESOURCE_MEM,
176         },
177         {
178                 .start  = INT_7XX_GPIO_BANK4,
179                 .flags  = IORESOURCE_IRQ,
180         },
181 };
182 
183 static struct omap_gpio_platform_data omap7xx_gpio4_config = {
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 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 omap_gpio_platform_data omap7xx_gpio5_config = {
212         .bank_width             = 32,
213         .regs                   = &omap7xx_gpio_regs,
214 };
215 
216 static struct platform_device omap7xx_gpio5 = {
217         .name           = "omap_gpio",
218         .id             = 5,
219         .dev            = {
220                 .platform_data = &omap7xx_gpio5_config,
221         },
222         .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
223         .resource = omap7xx_gpio5_resources,
224 };
225 
226 /* gpio6 */
227 static struct resource omap7xx_gpio6_resources[] = {
228         {
229                 .start  = OMAP7XX_GPIO6_BASE,
230                 .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
231                 .flags  = IORESOURCE_MEM,
232         },
233         {
234                 .start  = INT_7XX_GPIO_BANK6,
235                 .flags  = IORESOURCE_IRQ,
236         },
237 };
238 
239 static struct omap_gpio_platform_data omap7xx_gpio6_config = {
240         .bank_width             = 32,
241         .regs                   = &omap7xx_gpio_regs,
242 };
243 
244 static struct platform_device omap7xx_gpio6 = {
245         .name           = "omap_gpio",
246         .id             = 6,
247         .dev            = {
248                 .platform_data = &omap7xx_gpio6_config,
249         },
250         .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
251         .resource = omap7xx_gpio6_resources,
252 };
253 
254 static struct platform_device *omap7xx_gpio_dev[] __initdata = {
255         &omap7xx_mpu_gpio,
256         &omap7xx_gpio1,
257         &omap7xx_gpio2,
258         &omap7xx_gpio3,
259         &omap7xx_gpio4,
260         &omap7xx_gpio5,
261         &omap7xx_gpio6,
262 };
263 
264 /*
265  * omap7xx_gpio_init needs to be done before
266  * machine_init functions access gpio APIs.
267  * Hence omap7xx_gpio_init is a postcore_initcall.
268  */
269 static int __init omap7xx_gpio_init(void)
270 {
271         int i;
272 
273         if (!cpu_is_omap7xx())
274                 return -EINVAL;
275 
276         for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
277                 platform_device_register(omap7xx_gpio_dev[i]);
278 
279         return 0;
280 }
281 postcore_initcall(omap7xx_gpio_init);
282 

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