arch/arm/mach-omap1/gpio7xx.c

   1 /*
   2  * OMAP7xx specific gpio init
   3  *
   4  * Copyright (C) 2010 Texas Instruments Incorporated - https://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 "irqs.h"
  23 #include "soc.h"
  24
  25 #define OMAP7XX_GPIO1_BASE              0xfffbc000
  26 #define OMAP7XX_GPIO2_BASE              0xfffbc800
  27 #define OMAP7XX_GPIO3_BASE              0xfffbd000
  28 #define OMAP7XX_GPIO4_BASE              0xfffbd800
  29 #define OMAP7XX_GPIO5_BASE              0xfffbe000
  30 #define OMAP7XX_GPIO6_BASE              0xfffbe800
  31 #define OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
  32
  33 /* mpu gpio */
  34 static struct resource omap7xx_mpu_gpio_resources[] = {
  35         {
  36                 .start  = OMAP1_MPUIO_VBASE,
  37                 .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
  38                 .flags  = IORESOURCE_MEM,
  39         },
  40         {
  41                 .start  = INT_7XX_MPUIO,
  42                 .flags  = IORESOURCE_IRQ,
  43         },
  44 };
  45
  46 static struct omap_gpio_reg_offs omap7xx_mpuio_regs = {
  47         .revision       = USHRT_MAX,
  48         .direction      = OMAP_MPUIO_IO_CNTL / 2,
  49         .datain         = OMAP_MPUIO_INPUT_LATCH / 2,
  50         .dataout        = OMAP_MPUIO_OUTPUT / 2,
  51         .irqstatus      = OMAP_MPUIO_GPIO_INT / 2,
  52         .irqenable      = OMAP_MPUIO_GPIO_MASKIT / 2,
  53         .irqenable_inv  = true,
  54         .irqctrl        = OMAP_MPUIO_GPIO_INT_EDGE >> 1,
  55 };
  56
  57 static struct omap_gpio_platform_data omap7xx_mpu_gpio_config = {
  58         .is_mpuio               = true,
  59         .bank_width             = 16,
  60         .bank_stride            = 2,
  61         .regs                   = &omap7xx_mpuio_regs,
  62 };
  63
  64 static struct platform_device omap7xx_mpu_gpio = {
  65         .name           = "omap_gpio",
  66         .id             = 0,
  67         .dev            = {
  68                 .platform_data = &omap7xx_mpu_gpio_config,
  69         },
  70         .num_resources = ARRAY_SIZE(omap7xx_mpu_gpio_resources),
  71         .resource = omap7xx_mpu_gpio_resources,
  72 };
  73
  74 /* gpio1 */
  75 static struct resource omap7xx_gpio1_resources[] = {
  76         {
  77                 .start  = OMAP7XX_GPIO1_BASE,
  78                 .end    = OMAP7XX_GPIO1_BASE + SZ_2K - 1,
  79                 .flags  = IORESOURCE_MEM,
  80         },
  81         {
  82                 .start  = INT_7XX_GPIO_BANK1,
  83                 .flags  = IORESOURCE_IRQ,
  84         },
  85 };
  86
  87 static struct omap_gpio_reg_offs omap7xx_gpio_regs = {
  88         .revision       = USHRT_MAX,
  89         .direction      = OMAP7XX_GPIO_DIR_CONTROL,
  90         .datain         = OMAP7XX_GPIO_DATA_INPUT,
  91         .dataout        = OMAP7XX_GPIO_DATA_OUTPUT,
  92         .irqstatus      = OMAP7XX_GPIO_INT_STATUS,
  93         .irqenable      = OMAP7XX_GPIO_INT_MASK,
  94         .irqenable_inv  = true,
  95         .irqctrl        = OMAP7XX_GPIO_INT_CONTROL,
  96 };
  97
  98 static struct omap_gpio_platform_data omap7xx_gpio1_config = {
  99         .bank_width             = 32,
 100         .regs                   = &omap7xx_gpio_regs,
 101 };
 102
 103 static struct platform_device omap7xx_gpio1 = {
 104         .name           = "omap_gpio",
 105         .id             = 1,
 106         .dev            = {
 107                 .platform_data = &omap7xx_gpio1_config,
 108         },
 109         .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
 110         .resource = omap7xx_gpio1_resources,
 111 };
 112
 113 /* gpio2 */
 114 static struct resource omap7xx_gpio2_resources[] = {
 115         {
 116                 .start  = OMAP7XX_GPIO2_BASE,
 117                 .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
 118                 .flags  = IORESOURCE_MEM,
 119         },
 120         {
 121                 .start  = INT_7XX_GPIO_BANK2,
 122                 .flags  = IORESOURCE_IRQ,
 123         },
 124 };
 125
 126 static struct omap_gpio_platform_data omap7xx_gpio2_config = {
 127         .bank_width             = 32,
 128         .regs                   = &omap7xx_gpio_regs,
 129 };
 130
 131 static struct platform_device omap7xx_gpio2 = {
 132         .name           = "omap_gpio",
 133         .id             = 2,
 134         .dev            = {
 135                 .platform_data = &omap7xx_gpio2_config,
 136         },
 137         .num_resources = ARRAY_SIZE(omap7xx_gpio2_resources),
 138         .resource = omap7xx_gpio2_resources,
 139 };
 140
 141 /* gpio3 */
 142 static struct resource omap7xx_gpio3_resources[] = {
 143         {
 144                 .start  = OMAP7XX_GPIO3_BASE,
 145                 .end    = OMAP7XX_GPIO3_BASE + SZ_2K - 1,
 146                 .flags  = IORESOURCE_MEM,
 147         },
 148         {
 149                 .start  = INT_7XX_GPIO_BANK3,
 150                 .flags  = IORESOURCE_IRQ,
 151         },
 152 };
 153
 154 static struct omap_gpio_platform_data omap7xx_gpio3_config = {
 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 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 omap_gpio_platform_data omap7xx_gpio4_config = {
 183         .bank_width             = 32,
 184         .regs                   = &omap7xx_gpio_regs,
 185 };
 186
 187 static struct platform_device omap7xx_gpio4 = {
 188         .name           = "omap_gpio",
 189         .id             = 4,
 190         .dev            = {
 191                 .platform_data = &omap7xx_gpio4_config,
 192         },
 193         .num_resources = ARRAY_SIZE(omap7xx_gpio4_resources),
 194         .resource = omap7xx_gpio4_resources,
 195 };
 196
 197 /* gpio5 */
 198 static struct resource omap7xx_gpio5_resources[] = {
 199         {
 200                 .start  = OMAP7XX_GPIO5_BASE,
 201                 .end    = OMAP7XX_GPIO5_BASE + SZ_2K - 1,
 202                 .flags  = IORESOURCE_MEM,
 203         },
 204         {
 205                 .start  = INT_7XX_GPIO_BANK5,
 206                 .flags  = IORESOURCE_IRQ,
 207         },
 208 };
 209
 210 static struct omap_gpio_platform_data omap7xx_gpio5_config = {
 211         .bank_width             = 32,
 212         .regs                   = &omap7xx_gpio_regs,
 213 };
 214
 215 static struct platform_device omap7xx_gpio5 = {
 216         .name           = "omap_gpio",
 217         .id             = 5,
 218         .dev            = {
 219                 .platform_data = &omap7xx_gpio5_config,
 220         },
 221         .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
 222         .resource = omap7xx_gpio5_resources,
 223 };
 224
 225 /* gpio6 */
 226 static struct resource omap7xx_gpio6_resources[] = {
 227         {
 228                 .start  = OMAP7XX_GPIO6_BASE,
 229                 .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
 230                 .flags  = IORESOURCE_MEM,
 231         },
 232         {
 233                 .start  = INT_7XX_GPIO_BANK6,
 234                 .flags  = IORESOURCE_IRQ,
 235         },
 236 };
 237
 238 static struct omap_gpio_platform_data omap7xx_gpio6_config = {
 239         .bank_width             = 32,
 240         .regs                   = &omap7xx_gpio_regs,
 241 };
 242
 243 static struct platform_device omap7xx_gpio6 = {
 244         .name           = "omap_gpio",
 245         .id             = 6,
 246         .dev            = {
 247                 .platform_data = &omap7xx_gpio6_config,
 248         },
 249         .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
 250         .resource = omap7xx_gpio6_resources,
 251 };
 252
 253 static struct platform_device *omap7xx_gpio_dev[] __initdata = {
 254         &omap7xx_mpu_gpio,
 255         &omap7xx_gpio1,
 256         &omap7xx_gpio2,
 257         &omap7xx_gpio3,
 258         &omap7xx_gpio4,
 259         &omap7xx_gpio5,
 260         &omap7xx_gpio6,
 261 };
 262
 263 /*
 264  * omap7xx_gpio_init needs to be done before
 265  * machine_init functions access gpio APIs.
 266  * Hence omap7xx_gpio_init is a postcore_initcall.
 267  */
 268 static int __init omap7xx_gpio_init(void)
 269 {
 270         int i;
 271
 272         if (!cpu_is_omap7xx())
 273                 return -EINVAL;
 274
 275         for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
 276                 platform_device_register(omap7xx_gpio_dev[i]);
 277
 278         return 0;
 279 }
 280 postcore_initcall(omap7xx_gpio_init);