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 #include <mach/irqs.h>
  23
  24 #define OMAP7XX_GPIO1_BASE              0xfffbc000
  25 #define OMAP7XX_GPIO2_BASE              0xfffbc800
  26 #define OMAP7XX_GPIO3_BASE              0xfffbd000
  27 #define OMAP7XX_GPIO4_BASE              0xfffbd800
  28 #define OMAP7XX_GPIO5_BASE              0xfffbe000
  29 #define OMAP7XX_GPIO6_BASE              0xfffbe800
  30 #define OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
  31
  32 /* mpu gpio */
  33 static struct resource omap7xx_mpu_gpio_resources[] = {
  34         {
  35                 .start  = OMAP1_MPUIO_VBASE,
  36                 .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
  37                 .flags  = IORESOURCE_MEM,
  38         },
  39         {
  40                 .start  = INT_7XX_MPUIO,
  41                 .flags  = IORESOURCE_IRQ,
  42         },
  43 };
  44
  45 static struct omap_gpio_reg_offs omap7xx_mpuio_regs = {
  46         .revision       = USHRT_MAX,
  47         .direction      = OMAP_MPUIO_IO_CNTL / 2,
  48         .datain         = OMAP_MPUIO_INPUT_LATCH / 2,
  49         .dataout        = OMAP_MPUIO_OUTPUT / 2,
  50         .irqstatus      = OMAP_MPUIO_GPIO_INT / 2,
  51         .irqenable      = OMAP_MPUIO_GPIO_MASKIT / 2,
  52         .irqenable_inv  = true,
  53         .irqctrl        = OMAP_MPUIO_GPIO_INT_EDGE >> 1,
  54 };
  55
  56 static struct omap_gpio_platform_data omap7xx_mpu_gpio_config = {
  57         .is_mpuio               = true,
  58         .bank_width             = 16,
  59         .bank_stride            = 2,
  60         .regs                   = &omap7xx_mpuio_regs,
  61 };
  62
  63 static struct platform_device omap7xx_mpu_gpio = {
  64         .name           = "omap_gpio",
  65         .id             = 0,
  66         .dev            = {
  67                 .platform_data = &omap7xx_mpu_gpio_config,
  68         },
  69         .num_resources = ARRAY_SIZE(omap7xx_mpu_gpio_resources),
  70         .resource = omap7xx_mpu_gpio_resources,
  71 };
  72
  73 /* gpio1 */
  74 static struct resource omap7xx_gpio1_resources[] = {
  75         {
  76                 .start  = OMAP7XX_GPIO1_BASE,
  77                 .end    = OMAP7XX_GPIO1_BASE + SZ_2K - 1,
  78                 .flags  = IORESOURCE_MEM,
  79         },
  80         {
  81                 .start  = INT_7XX_GPIO_BANK1,
  82                 .flags  = IORESOURCE_IRQ,
  83         },
  84 };
  85
  86 static struct omap_gpio_reg_offs omap7xx_gpio_regs = {
  87         .revision       = USHRT_MAX,
  88         .direction      = OMAP7XX_GPIO_DIR_CONTROL,
  89         .datain         = OMAP7XX_GPIO_DATA_INPUT,
  90         .dataout        = OMAP7XX_GPIO_DATA_OUTPUT,
  91         .irqstatus      = OMAP7XX_GPIO_INT_STATUS,
  92         .irqenable      = OMAP7XX_GPIO_INT_MASK,
  93         .irqenable_inv  = true,
  94         .irqctrl        = OMAP7XX_GPIO_INT_CONTROL,
  95 };
  96
  97 static struct omap_gpio_platform_data omap7xx_gpio1_config = {
  98         .bank_width             = 32,
  99         .regs                   = &omap7xx_gpio_regs,
 100 };
 101
 102 static struct platform_device omap7xx_gpio1 = {
 103         .name           = "omap_gpio",
 104         .id             = 1,
 105         .dev            = {
 106                 .platform_data = &omap7xx_gpio1_config,
 107         },
 108         .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
 109         .resource = omap7xx_gpio1_resources,
 110 };
 111
 112 /* gpio2 */
 113 static struct resource omap7xx_gpio2_resources[] = {
 114         {
 115                 .start  = OMAP7XX_GPIO2_BASE,
 116                 .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
 117                 .flags  = IORESOURCE_MEM,
 118         },
 119         {
 120                 .start  = INT_7XX_GPIO_BANK2,
 121                 .flags  = IORESOURCE_IRQ,
 122         },
 123 };
 124
 125 static struct omap_gpio_platform_data omap7xx_gpio2_config = {
 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 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 omap_gpio_platform_data omap7xx_gpio3_config = {
 154         .bank_width             = 32,
 155         .regs                   = &omap7xx_gpio_regs,
 156 };
 157
 158 static struct platform_device omap7xx_gpio3 = {
 159         .name           = "omap_gpio",
 160         .id             = 3,
 161         .dev            = {
 162                 .platform_data = &omap7xx_gpio3_config,
 163         },
 164         .num_resources = ARRAY_SIZE(omap7xx_gpio3_resources),
 165         .resource = omap7xx_gpio3_resources,
 166 };
 167
 168 /* gpio4 */
 169 static struct resource omap7xx_gpio4_resources[] = {
 170         {
 171                 .start  = OMAP7XX_GPIO4_BASE,
 172                 .end    = OMAP7XX_GPIO4_BASE + SZ_2K - 1,
 173                 .flags  = IORESOURCE_MEM,
 174         },
 175         {
 176                 .start  = INT_7XX_GPIO_BANK4,
 177                 .flags  = IORESOURCE_IRQ,
 178         },
 179 };
 180
 181 static struct omap_gpio_platform_data omap7xx_gpio4_config = {
 182         .bank_width             = 32,
 183         .regs                   = &omap7xx_gpio_regs,
 184 };
 185
 186 static struct platform_device omap7xx_gpio4 = {
 187         .name           = "omap_gpio",
 188         .id             = 4,
 189         .dev            = {
 190                 .platform_data = &omap7xx_gpio4_config,
 191         },
 192         .num_resources = ARRAY_SIZE(omap7xx_gpio4_resources),
 193         .resource = omap7xx_gpio4_resources,
 194 };
 195
 196 /* gpio5 */
 197 static struct resource omap7xx_gpio5_resources[] = {
 198         {
 199                 .start  = OMAP7XX_GPIO5_BASE,
 200                 .end    = OMAP7XX_GPIO5_BASE + SZ_2K - 1,
 201                 .flags  = IORESOURCE_MEM,
 202         },
 203         {
 204                 .start  = INT_7XX_GPIO_BANK5,
 205                 .flags  = IORESOURCE_IRQ,
 206         },
 207 };
 208
 209 static struct omap_gpio_platform_data omap7xx_gpio5_config = {
 210         .bank_width             = 32,
 211         .regs                   = &omap7xx_gpio_regs,
 212 };
 213
 214 static struct platform_device omap7xx_gpio5 = {
 215         .name           = "omap_gpio",
 216         .id             = 5,
 217         .dev            = {
 218                 .platform_data = &omap7xx_gpio5_config,
 219         },
 220         .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
 221         .resource = omap7xx_gpio5_resources,
 222 };
 223
 224 /* gpio6 */
 225 static struct resource omap7xx_gpio6_resources[] = {
 226         {
 227                 .start  = OMAP7XX_GPIO6_BASE,
 228                 .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
 229                 .flags  = IORESOURCE_MEM,
 230         },
 231         {
 232                 .start  = INT_7XX_GPIO_BANK6,
 233                 .flags  = IORESOURCE_IRQ,
 234         },
 235 };
 236
 237 static struct omap_gpio_platform_data omap7xx_gpio6_config = {
 238         .bank_width             = 32,
 239         .regs                   = &omap7xx_gpio_regs,
 240 };
 241
 242 static struct platform_device omap7xx_gpio6 = {
 243         .name           = "omap_gpio",
 244         .id             = 6,
 245         .dev            = {
 246                 .platform_data = &omap7xx_gpio6_config,
 247         },
 248         .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
 249         .resource = omap7xx_gpio6_resources,
 250 };
 251
 252 static struct platform_device *omap7xx_gpio_dev[] __initdata = {
 253         &omap7xx_mpu_gpio,
 254         &omap7xx_gpio1,
 255         &omap7xx_gpio2,
 256         &omap7xx_gpio3,
 257         &omap7xx_gpio4,
 258         &omap7xx_gpio5,
 259         &omap7xx_gpio6,
 260 };
 261
 262 /*
 263  * omap7xx_gpio_init needs to be done before
 264  * machine_init functions access gpio APIs.
 265  * Hence omap7xx_gpio_init is a postcore_initcall.
 266  */
 267 static int __init omap7xx_gpio_init(void)
 268 {
 269         int i;
 270
 271         if (!cpu_is_omap7xx())
 272                 return -EINVAL;
 273
 274         for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
 275                 platform_device_register(omap7xx_gpio_dev[i]);
 276
 277         return 0;
 278 }
 279 postcore_initcall(omap7xx_gpio_init);