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
  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         .is_mpuio               = true,
  55         .bank_width             = 16,
  56         .bank_stride            = 2,
  57         .regs                   = &omap7xx_mpuio_regs,
  58 };
  59
  60 static struct platform_device omap7xx_mpu_gpio = {
  61         .name           = "omap_gpio",
  62         .id             = 0,
  63         .dev            = {
  64                 .platform_data = &omap7xx_mpu_gpio_config,
  65         },
  66         .num_resources = ARRAY_SIZE(omap7xx_mpu_gpio_resources),
  67         .resource = omap7xx_mpu_gpio_resources,
  68 };
  69
  70 /* gpio1 */
  71 static struct __initdata resource omap7xx_gpio1_resources[] = {
  72         {
  73                 .start  = OMAP7XX_GPIO1_BASE,
  74                 .end    = OMAP7XX_GPIO1_BASE + SZ_2K - 1,
  75                 .flags  = IORESOURCE_MEM,
  76         },
  77         {
  78                 .start  = INT_7XX_GPIO_BANK1,
  79                 .flags  = IORESOURCE_IRQ,
  80         },
  81 };
  82
  83 static struct omap_gpio_reg_offs omap7xx_gpio_regs = {
  84         .revision       = USHRT_MAX,
  85         .direction      = OMAP7XX_GPIO_DIR_CONTROL,
  86         .datain         = OMAP7XX_GPIO_DATA_INPUT,
  87         .dataout        = OMAP7XX_GPIO_DATA_OUTPUT,
  88         .irqstatus      = OMAP7XX_GPIO_INT_STATUS,
  89         .irqenable      = OMAP7XX_GPIO_INT_MASK,
  90         .irqenable_inv  = true,
  91         .irqctrl        = OMAP7XX_GPIO_INT_CONTROL,
  92 };
  93
  94 static struct __initdata omap_gpio_platform_data omap7xx_gpio1_config = {
  95         .bank_width             = 32,
  96         .regs                   = &omap7xx_gpio_regs,
  97 };
  98
  99 static struct platform_device omap7xx_gpio1 = {
 100         .name           = "omap_gpio",
 101         .id             = 1,
 102         .dev            = {
 103                 .platform_data = &omap7xx_gpio1_config,
 104         },
 105         .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
 106         .resource = omap7xx_gpio1_resources,
 107 };
 108
 109 /* gpio2 */
 110 static struct __initdata resource omap7xx_gpio2_resources[] = {
 111         {
 112                 .start  = OMAP7XX_GPIO2_BASE,
 113                 .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
 114                 .flags  = IORESOURCE_MEM,
 115         },
 116         {
 117                 .start  = INT_7XX_GPIO_BANK2,
 118                 .flags  = IORESOURCE_IRQ,
 119         },
 120 };
 121
 122 static struct __initdata omap_gpio_platform_data omap7xx_gpio2_config = {
 123         .bank_width             = 32,
 124         .regs                   = &omap7xx_gpio_regs,
 125 };
 126
 127 static struct platform_device omap7xx_gpio2 = {
 128         .name           = "omap_gpio",
 129         .id             = 2,
 130         .dev            = {
 131                 .platform_data = &omap7xx_gpio2_config,
 132         },
 133         .num_resources = ARRAY_SIZE(omap7xx_gpio2_resources),
 134         .resource = omap7xx_gpio2_resources,
 135 };
 136
 137 /* gpio3 */
 138 static struct __initdata resource omap7xx_gpio3_resources[] = {
 139         {
 140                 .start  = OMAP7XX_GPIO3_BASE,
 141                 .end    = OMAP7XX_GPIO3_BASE + SZ_2K - 1,
 142                 .flags  = IORESOURCE_MEM,
 143         },
 144         {
 145                 .start  = INT_7XX_GPIO_BANK3,
 146                 .flags  = IORESOURCE_IRQ,
 147         },
 148 };
 149
 150 static struct __initdata omap_gpio_platform_data omap7xx_gpio3_config = {
 151         .bank_width             = 32,
 152         .regs                   = &omap7xx_gpio_regs,
 153 };
 154
 155 static struct platform_device omap7xx_gpio3 = {
 156         .name           = "omap_gpio",
 157         .id             = 3,
 158         .dev            = {
 159                 .platform_data = &omap7xx_gpio3_config,
 160         },
 161         .num_resources = ARRAY_SIZE(omap7xx_gpio3_resources),
 162         .resource = omap7xx_gpio3_resources,
 163 };
 164
 165 /* gpio4 */
 166 static struct __initdata resource omap7xx_gpio4_resources[] = {
 167         {
 168                 .start  = OMAP7XX_GPIO4_BASE,
 169                 .end    = OMAP7XX_GPIO4_BASE + SZ_2K - 1,
 170                 .flags  = IORESOURCE_MEM,
 171         },
 172         {
 173                 .start  = INT_7XX_GPIO_BANK4,
 174                 .flags  = IORESOURCE_IRQ,
 175         },
 176 };
 177
 178 static struct __initdata omap_gpio_platform_data omap7xx_gpio4_config = {
 179         .bank_width             = 32,
 180         .regs                   = &omap7xx_gpio_regs,
 181 };
 182
 183 static struct platform_device omap7xx_gpio4 = {
 184         .name           = "omap_gpio",
 185         .id             = 4,
 186         .dev            = {
 187                 .platform_data = &omap7xx_gpio4_config,
 188         },
 189         .num_resources = ARRAY_SIZE(omap7xx_gpio4_resources),
 190         .resource = omap7xx_gpio4_resources,
 191 };
 192
 193 /* gpio5 */
 194 static struct __initdata resource omap7xx_gpio5_resources[] = {
 195         {
 196                 .start  = OMAP7XX_GPIO5_BASE,
 197                 .end    = OMAP7XX_GPIO5_BASE + SZ_2K - 1,
 198                 .flags  = IORESOURCE_MEM,
 199         },
 200         {
 201                 .start  = INT_7XX_GPIO_BANK5,
 202                 .flags  = IORESOURCE_IRQ,
 203         },
 204 };
 205
 206 static struct __initdata omap_gpio_platform_data omap7xx_gpio5_config = {
 207         .bank_width             = 32,
 208         .regs                   = &omap7xx_gpio_regs,
 209 };
 210
 211 static struct platform_device omap7xx_gpio5 = {
 212         .name           = "omap_gpio",
 213         .id             = 5,
 214         .dev            = {
 215                 .platform_data = &omap7xx_gpio5_config,
 216         },
 217         .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
 218         .resource = omap7xx_gpio5_resources,
 219 };
 220
 221 /* gpio6 */
 222 static struct __initdata resource omap7xx_gpio6_resources[] = {
 223         {
 224                 .start  = OMAP7XX_GPIO6_BASE,
 225                 .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
 226                 .flags  = IORESOURCE_MEM,
 227         },
 228         {
 229                 .start  = INT_7XX_GPIO_BANK6,
 230                 .flags  = IORESOURCE_IRQ,
 231         },
 232 };
 233
 234 static struct __initdata omap_gpio_platform_data omap7xx_gpio6_config = {
 235         .bank_width             = 32,
 236         .regs                   = &omap7xx_gpio_regs,
 237 };
 238
 239 static struct platform_device omap7xx_gpio6 = {
 240         .name           = "omap_gpio",
 241         .id             = 6,
 242         .dev            = {
 243                 .platform_data = &omap7xx_gpio6_config,
 244         },
 245         .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
 246         .resource = omap7xx_gpio6_resources,
 247 };
 248
 249 static struct __initdata platform_device * omap7xx_gpio_dev[] = {
 250         &omap7xx_mpu_gpio,
 251         &omap7xx_gpio1,
 252         &omap7xx_gpio2,
 253         &omap7xx_gpio3,
 254         &omap7xx_gpio4,
 255         &omap7xx_gpio5,
 256         &omap7xx_gpio6,
 257 };
 258
 259 /*
 260  * omap7xx_gpio_init needs to be done before
 261  * machine_init functions access gpio APIs.
 262  * Hence omap7xx_gpio_init is a postcore_initcall.
 263  */
 264 static int __init omap7xx_gpio_init(void)
 265 {
 266         int i;
 267
 268         if (!cpu_is_omap7xx())
 269                 return -EINVAL;
 270
 271         for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
 272                 platform_device_register(omap7xx_gpio_dev[i]);
 273
 274         return 0;
 275 }
 276 postcore_initcall(omap7xx_gpio_init);