arch/arm/mach-omap1/gpio7xx.c

   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 #define OMAP7XX_GPIO1_BASE              0xfffbc000
  23 #define OMAP7XX_GPIO2_BASE              0xfffbc800
  24 #define OMAP7XX_GPIO3_BASE              0xfffbd000
  25 #define OMAP7XX_GPIO4_BASE              0xfffbd800
  26 #define OMAP7XX_GPIO5_BASE              0xfffbe000
  27 #define OMAP7XX_GPIO6_BASE              0xfffbe800
  28 #define OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
  29
  30 /* mpu gpio */
  31 static struct __initdata resource omap7xx_mpu_gpio_resources[] = {
  32         {
  33                 .start  = OMAP1_MPUIO_VBASE,
  34                 .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
  35                 .flags  = IORESOURCE_MEM,
  36         },
  37         {
  38                 .start  = INT_7XX_MPUIO,
  39                 .flags  = IORESOURCE_IRQ,
  40         },
  41 };
  42
  43 static struct omap_gpio_reg_offs omap7xx_mpuio_regs = {
  44         .revision       = USHRT_MAX,
  45         .direction      = OMAP_MPUIO_IO_CNTL / 2,
  46         .datain         = OMAP_MPUIO_INPUT_LATCH / 2,
  47         .dataout        = OMAP_MPUIO_OUTPUT / 2,
  48         .irqstatus      = OMAP_MPUIO_GPIO_INT / 2,
  49         .irqenable      = OMAP_MPUIO_GPIO_MASKIT / 2,
  50         .irqenable_inv  = true,
  51         .irqctrl        = OMAP_MPUIO_GPIO_INT_EDGE >> 1,
  52 };
  53
  54 static struct __initdata omap_gpio_platform_data omap7xx_mpu_gpio_config = {
  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         .bank_width             = 32,
  97         .regs                   = &omap7xx_gpio_regs,
  98 };
  99
 100 static struct platform_device omap7xx_gpio1 = {
 101         .name           = "omap_gpio",
 102         .id             = 1,
 103         .dev            = {
 104                 .platform_data = &omap7xx_gpio1_config,
 105         },
 106         .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
 107         .resource = omap7xx_gpio1_resources,
 108 };
 109
 110 /* gpio2 */
 111 static struct __initdata resource omap7xx_gpio2_resources[] = {
 112         {
 113                 .start  = OMAP7XX_GPIO2_BASE,
 114                 .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
 115                 .flags  = IORESOURCE_MEM,
 116         },
 117         {
 118                 .start  = INT_7XX_GPIO_BANK2,
 119                 .flags  = IORESOURCE_IRQ,
 120         },
 121 };
 122
 123 static struct __initdata omap_gpio_platform_data omap7xx_gpio2_config = {
 124         .bank_width             = 32,
 125         .regs                   = &omap7xx_gpio_regs,
 126 };
 127
 128 static struct platform_device omap7xx_gpio2 = {
 129         .name           = "omap_gpio",
 130         .id             = 2,
 131         .dev            = {
 132                 .platform_data = &omap7xx_gpio2_config,
 133         },
 134         .num_resources = ARRAY_SIZE(omap7xx_gpio2_resources),
 135         .resource = omap7xx_gpio2_resources,
 136 };
 137
 138 /* gpio3 */
 139 static struct __initdata resource omap7xx_gpio3_resources[] = {
 140         {
 141                 .start  = OMAP7XX_GPIO3_BASE,
 142                 .end    = OMAP7XX_GPIO3_BASE + SZ_2K - 1,
 143                 .flags  = IORESOURCE_MEM,
 144         },
 145         {
 146                 .start  = INT_7XX_GPIO_BANK3,
 147                 .flags  = IORESOURCE_IRQ,
 148         },
 149 };
 150
 151 static struct __initdata omap_gpio_platform_data omap7xx_gpio3_config = {
 152         .bank_width             = 32,
 153         .regs                   = &omap7xx_gpio_regs,
 154 };
 155
 156 static struct platform_device omap7xx_gpio3 = {
 157         .name           = "omap_gpio",
 158         .id             = 3,
 159         .dev            = {
 160                 .platform_data = &omap7xx_gpio3_config,
 161         },
 162         .num_resources = ARRAY_SIZE(omap7xx_gpio3_resources),
 163         .resource = omap7xx_gpio3_resources,
 164 };
 165
 166 /* gpio4 */
 167 static struct __initdata resource omap7xx_gpio4_resources[] = {
 168         {
 169                 .start  = OMAP7XX_GPIO4_BASE,
 170                 .end    = OMAP7XX_GPIO4_BASE + SZ_2K - 1,
 171                 .flags  = IORESOURCE_MEM,
 172         },
 173         {
 174                 .start  = INT_7XX_GPIO_BANK4,
 175                 .flags  = IORESOURCE_IRQ,
 176         },
 177 };
 178
 179 static struct __initdata omap_gpio_platform_data omap7xx_gpio4_config = {
 180         .bank_width             = 32,
 181         .regs                   = &omap7xx_gpio_regs,
 182 };
 183
 184 static struct platform_device omap7xx_gpio4 = {
 185         .name           = "omap_gpio",
 186         .id             = 4,
 187         .dev            = {
 188                 .platform_data = &omap7xx_gpio4_config,
 189         },
 190         .num_resources = ARRAY_SIZE(omap7xx_gpio4_resources),
 191         .resource = omap7xx_gpio4_resources,
 192 };
 193
 194 /* gpio5 */
 195 static struct __initdata resource omap7xx_gpio5_resources[] = {
 196         {
 197                 .start  = OMAP7XX_GPIO5_BASE,
 198                 .end    = OMAP7XX_GPIO5_BASE + SZ_2K - 1,
 199                 .flags  = IORESOURCE_MEM,
 200         },
 201         {
 202                 .start  = INT_7XX_GPIO_BANK5,
 203                 .flags  = IORESOURCE_IRQ,
 204         },
 205 };
 206
 207 static struct __initdata omap_gpio_platform_data omap7xx_gpio5_config = {
 208         .bank_width             = 32,
 209         .regs                   = &omap7xx_gpio_regs,
 210 };
 211
 212 static struct platform_device omap7xx_gpio5 = {
 213         .name           = "omap_gpio",
 214         .id             = 5,
 215         .dev            = {
 216                 .platform_data = &omap7xx_gpio5_config,
 217         },
 218         .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
 219         .resource = omap7xx_gpio5_resources,
 220 };
 221
 222 /* gpio6 */
 223 static struct __initdata resource omap7xx_gpio6_resources[] = {
 224         {
 225                 .start  = OMAP7XX_GPIO6_BASE,
 226                 .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
 227                 .flags  = IORESOURCE_MEM,
 228         },
 229         {
 230                 .start  = INT_7XX_GPIO_BANK6,
 231                 .flags  = IORESOURCE_IRQ,
 232         },
 233 };
 234
 235 static struct __initdata omap_gpio_platform_data omap7xx_gpio6_config = {
 236         .bank_width             = 32,
 237         .regs                   = &omap7xx_gpio_regs,
 238 };
 239
 240 static struct platform_device omap7xx_gpio6 = {
 241         .name           = "omap_gpio",
 242         .id             = 6,
 243         .dev            = {
 244                 .platform_data = &omap7xx_gpio6_config,
 245         },
 246         .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
 247         .resource = omap7xx_gpio6_resources,
 248 };
 249
 250 static struct __initdata platform_device * omap7xx_gpio_dev[] = {
 251         &omap7xx_mpu_gpio,
 252         &omap7xx_gpio1,
 253         &omap7xx_gpio2,
 254         &omap7xx_gpio3,
 255         &omap7xx_gpio4,
 256         &omap7xx_gpio5,
 257         &omap7xx_gpio6,
 258 };
 259
 260 /*
 261  * omap7xx_gpio_init needs to be done before
 262  * machine_init functions access gpio APIs.
 263  * Hence omap7xx_gpio_init is a postcore_initcall.
 264  */
 265 static int __init omap7xx_gpio_init(void)
 266 {
 267         int i;
 268
 269         if (!cpu_is_omap7xx())
 270                 return -EINVAL;
 271
 272         for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
 273                 platform_device_register(omap7xx_gpio_dev[i]);
 274
 275         return 0;
 276 }
 277 postcore_initcall(omap7xx_gpio_init);