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 <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);