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 };
  51
  52 static struct __initdata omap_gpio_platform_data omap7xx_mpu_gpio_config = {
  53         .virtual_irq_start      = IH_MPUIO_BASE,
  54         .bank_type              = METHOD_MPUIO,
  55         .bank_width             = 32,
  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 };
  92
  93 static struct __initdata omap_gpio_platform_data omap7xx_gpio1_config = {
  94         .virtual_irq_start      = IH_GPIO_BASE,
  95         .bank_type              = METHOD_GPIO_7XX,
  96         .bank_width             = 32,
  97         .regs                   = &omap7xx_gpio_regs,
  98 };
  99
 100 static struct platform_device omap7xx_gpio1 = {
 101         .name           = "omap_gpio",
 102         .id             = 1,
 103         .dev            = {
 104                 .platform_data = &omap7xx_gpio1_config,
 105         },
 106         .num_resources = ARRAY_SIZE(omap7xx_gpio1_resources),
 107         .resource = omap7xx_gpio1_resources,
 108 };
 109
 110 /* gpio2 */
 111 static struct __initdata resource omap7xx_gpio2_resources[] = {
 112         {
 113                 .start  = OMAP7XX_GPIO2_BASE,
 114                 .end    = OMAP7XX_GPIO2_BASE + SZ_2K - 1,
 115                 .flags  = IORESOURCE_MEM,
 116         },
 117         {
 118                 .start  = INT_7XX_GPIO_BANK2,
 119                 .flags  = IORESOURCE_IRQ,
 120         },
 121 };
 122
 123 static struct __initdata omap_gpio_platform_data omap7xx_gpio2_config = {
 124         .virtual_irq_start      = IH_GPIO_BASE + 32,
 125         .bank_type              = METHOD_GPIO_7XX,
 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_type              = METHOD_GPIO_7XX,
 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 __initdata 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 __initdata omap_gpio_platform_data omap7xx_gpio4_config = {
 184         .virtual_irq_start      = IH_GPIO_BASE + 96,
 185         .bank_type              = METHOD_GPIO_7XX,
 186         .bank_width             = 32,
 187         .regs                   = &omap7xx_gpio_regs,
 188 };
 189
 190 static struct platform_device omap7xx_gpio4 = {
 191         .name           = "omap_gpio",
 192         .id             = 4,
 193         .dev            = {
 194                 .platform_data = &omap7xx_gpio4_config,
 195         },
 196         .num_resources = ARRAY_SIZE(omap7xx_gpio4_resources),
 197         .resource = omap7xx_gpio4_resources,
 198 };
 199
 200 /* gpio5 */
 201 static struct __initdata resource omap7xx_gpio5_resources[] = {
 202         {
 203                 .start  = OMAP7XX_GPIO5_BASE,
 204                 .end    = OMAP7XX_GPIO5_BASE + SZ_2K - 1,
 205                 .flags  = IORESOURCE_MEM,
 206         },
 207         {
 208                 .start  = INT_7XX_GPIO_BANK5,
 209                 .flags  = IORESOURCE_IRQ,
 210         },
 211 };
 212
 213 static struct __initdata omap_gpio_platform_data omap7xx_gpio5_config = {
 214         .virtual_irq_start      = IH_GPIO_BASE + 128,
 215         .bank_type              = METHOD_GPIO_7XX,
 216         .bank_width             = 32,
 217         .regs                   = &omap7xx_gpio_regs,
 218 };
 219
 220 static struct platform_device omap7xx_gpio5 = {
 221         .name           = "omap_gpio",
 222         .id             = 5,
 223         .dev            = {
 224                 .platform_data = &omap7xx_gpio5_config,
 225         },
 226         .num_resources = ARRAY_SIZE(omap7xx_gpio5_resources),
 227         .resource = omap7xx_gpio5_resources,
 228 };
 229
 230 /* gpio6 */
 231 static struct __initdata resource omap7xx_gpio6_resources[] = {
 232         {
 233                 .start  = OMAP7XX_GPIO6_BASE,
 234                 .end    = OMAP7XX_GPIO6_BASE + SZ_2K - 1,
 235                 .flags  = IORESOURCE_MEM,
 236         },
 237         {
 238                 .start  = INT_7XX_GPIO_BANK6,
 239                 .flags  = IORESOURCE_IRQ,
 240         },
 241 };
 242
 243 static struct __initdata omap_gpio_platform_data omap7xx_gpio6_config = {
 244         .virtual_irq_start      = IH_GPIO_BASE + 160,
 245         .bank_type              = METHOD_GPIO_7XX,
 246         .bank_width             = 32,
 247         .regs                   = &omap7xx_gpio_regs,
 248 };
 249
 250 static struct platform_device omap7xx_gpio6 = {
 251         .name           = "omap_gpio",
 252         .id             = 6,
 253         .dev            = {
 254                 .platform_data = &omap7xx_gpio6_config,
 255         },
 256         .num_resources = ARRAY_SIZE(omap7xx_gpio6_resources),
 257         .resource = omap7xx_gpio6_resources,
 258 };
 259
 260 static struct __initdata platform_device * omap7xx_gpio_dev[] = {
 261         &omap7xx_mpu_gpio,
 262         &omap7xx_gpio1,
 263         &omap7xx_gpio2,
 264         &omap7xx_gpio3,
 265         &omap7xx_gpio4,
 266         &omap7xx_gpio5,
 267         &omap7xx_gpio6,
 268 };
 269
 270 /*
 271  * omap7xx_gpio_init needs to be done before
 272  * machine_init functions access gpio APIs.
 273  * Hence omap7xx_gpio_init is a postcore_initcall.
 274  */
 275 static int __init omap7xx_gpio_init(void)
 276 {
 277         int i;
 278
 279         if (!cpu_is_omap7xx())
 280                 return -EINVAL;
 281
 282         for (i = 0; i < ARRAY_SIZE(omap7xx_gpio_dev); i++)
 283                 platform_device_register(omap7xx_gpio_dev[i]);
 284
 285         gpio_bank_count = ARRAY_SIZE(omap7xx_gpio_dev);
 286
 287         return 0;
 288 }
 289 postcore_initcall(omap7xx_gpio_init);