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 / 2,
  51 };
  52
  53 static struct __initdata omap_gpio_platform_data omap7xx_mpu_gpio_config = {
  54         .virtual_irq_start      = IH_MPUIO_BASE,
  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         .virtual_irq_start      = IH_GPIO_BASE,
  97         .bank_width             = 32,
  98         .regs                   = &omap7xx_gpio_regs,
  99 };
 100
 101 static struct platform_device omap7xx_gpio1 = {
 102         .name           = "omap_gpio",
 103         .id             = 1,
 104         .dev            = {
 105                 .platform_data = &omap7xx_gpio1_config,
 106         },
 107         .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
 108         .resource = omap7xx_gpio1_resources,
 109 };
 110
 111 /* gpio2 */
 112 static struct __initdata resource omap7xx_gpio2_resources[] = {
 113         {
 114                 .start  = OMAP7XX_GPIO2_BASE,
 115                 .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
 116                 .flags  = IORESOURCE_MEM,
 117         },
 118         {
 119                 .start  = INT_7XX_GPIO_BANK2,
 120                 .flags  = IORESOURCE_IRQ,
 121         },
 122 };
 123
 124 static struct __initdata omap_gpio_platform_data omap7xx_gpio2_config = {
 125         .virtual_irq_start      = IH_GPIO_BASE + 32,
 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 __initdata 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 __initdata omap_gpio_platform_data omap7xx_gpio3_config = {
 154         .virtual_irq_start      = IH_GPIO_BASE + 64,
 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 __initdata 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 __initdata omap_gpio_platform_data omap7xx_gpio4_config = {
 183         .virtual_irq_start      = IH_GPIO_BASE + 96,
 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 __initdata 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 __initdata omap_gpio_platform_data omap7xx_gpio5_config = {
 212         .virtual_irq_start      = IH_GPIO_BASE + 128,
 213         .bank_width             = 32,
 214         .regs                   = &omap7xx_gpio_regs,
 215 };
 216
 217 static struct platform_device omap7xx_gpio5 = {
 218         .name           = "omap_gpio",
 219         .id             = 5,
 220         .dev            = {
 221                 .platform_data = &omap7xx_gpio5_config,
 222         },
 223         .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
 224         .resource = omap7xx_gpio5_resources,
 225 };
 226
 227 /* gpio6 */
 228 static struct __initdata resource omap7xx_gpio6_resources[] = {
 229         {
 230                 .start  = OMAP7XX_GPIO6_BASE,
 231                 .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
 232                 .flags  = IORESOURCE_MEM,
 233         },
 234         {
 235                 .start  = INT_7XX_GPIO_BANK6,
 236                 .flags  = IORESOURCE_IRQ,
 237         },
 238 };
 239
 240 static struct __initdata omap_gpio_platform_data omap7xx_gpio6_config = {
 241         .virtual_irq_start      = IH_GPIO_BASE + 160,
 242         .bank_width             = 32,
 243         .regs                   = &omap7xx_gpio_regs,
 244 };
 245
 246 static struct platform_device omap7xx_gpio6 = {
 247         .name           = "omap_gpio",
 248         .id             = 6,
 249         .dev            = {
 250                 .platform_data = &omap7xx_gpio6_config,
 251         },
 252         .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
 253         .resource = omap7xx_gpio6_resources,
 254 };
 255
 256 static struct __initdata platform_device * omap7xx_gpio_dev[] = {
 257         &omap7xx_mpu_gpio,
 258         &omap7xx_gpio1,
 259         &omap7xx_gpio2,
 260         &omap7xx_gpio3,
 261         &omap7xx_gpio4,
 262         &omap7xx_gpio5,
 263         &omap7xx_gpio6,
 264 };
 265
 266 /*
 267  * omap7xx_gpio_init needs to be done before
 268  * machine_init functions access gpio APIs.
 269  * Hence omap7xx_gpio_init is a postcore_initcall.
 270  */
 271 static int __init omap7xx_gpio_init(void)
 272 {
 273         int i;
 274
 275         if (!cpu_is_omap7xx())
 276                 return -EINVAL;
 277
 278         for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
 279                 platform_device_register(omap7xx_gpio_dev[i]);
 280
 281         return 0;
 282 }
 283 postcore_initcall(omap7xx_gpio_init);