arch/arm/mach-omap1/gpio15xx.c

   1 /*
   2  * OMAP15xx 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 OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
  22 #define OMAP1510_GPIO_BASE              0xFFFCE000
  23
  24 /* gpio1 */
  25 static struct __initdata resource omap15xx_mpu_gpio_resources[] = {
  26         {
  27                 .start  = OMAP1_MPUIO_VBASE,
  28                 .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
  29                 .flags  = IORESOURCE_MEM,
  30         },
  31         {
  32                 .start  = INT_MPUIO,
  33                 .flags  = IORESOURCE_IRQ,
  34         },
  35 };
  36
  37 static struct __initdata omap_gpio_platform_data omap15xx_mpu_gpio_config = {
  38         .virtual_irq_start      = IH_MPUIO_BASE,
  39         .bank_type              = METHOD_MPUIO,
  40         .bank_width             = 16,
  41         .bank_stride            = 1,
  42 };
  43
  44 static struct __initdata platform_device omap15xx_mpu_gpio = {
  45         .name           = "omap_gpio",
  46         .id             = 0,
  47         .dev            = {
  48                 .platform_data = &omap15xx_mpu_gpio_config,
  49         },
  50         .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
  51         .resource = omap15xx_mpu_gpio_resources,
  52 };
  53
  54 /* gpio2 */
  55 static struct __initdata resource omap15xx_gpio_resources[] = {
  56         {
  57                 .start  = OMAP1510_GPIO_BASE,
  58                 .end    = OMAP1510_GPIO_BASE + SZ_2K - 1,
  59                 .flags  = IORESOURCE_MEM,
  60         },
  61         {
  62                 .start  = INT_GPIO_BANK1,
  63                 .flags  = IORESOURCE_IRQ,
  64         },
  65 };
  66
  67 static struct __initdata omap_gpio_platform_data omap15xx_gpio_config = {
  68         .virtual_irq_start      = IH_GPIO_BASE,
  69         .bank_type              = METHOD_GPIO_1510,
  70         .bank_width             = 16,
  71 };
  72
  73 static struct __initdata platform_device omap15xx_gpio = {
  74         .name           = "omap_gpio",
  75         .id             = 1,
  76         .dev            = {
  77                 .platform_data = &omap15xx_gpio_config,
  78         },
  79         .num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
  80         .resource = omap15xx_gpio_resources,
  81 };
  82
  83 /*
  84  * omap15xx_gpio_init needs to be done before
  85  * machine_init functions access gpio APIs.
  86  * Hence omap15xx_gpio_init is a postcore_initcall.
  87  */
  88 static int __init omap15xx_gpio_init(void)
  89 {
  90         if (!cpu_is_omap15xx())
  91                 return -EINVAL;
  92
  93         platform_device_register(&omap15xx_mpu_gpio);
  94         platform_device_register(&omap15xx_gpio);
  95
  96         gpio_bank_count = 2;
  97         return 0;
  98 }
  99 postcore_initcall(omap15xx_gpio_init);