arch/arm/mach-omap1/gpio16xx.c

   1 /*
   2  * OMAP16xx 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 OMAP1610_GPIO1_BASE             0xfffbe400
  22 #define OMAP1610_GPIO2_BASE             0xfffbec00
  23 #define OMAP1610_GPIO3_BASE             0xfffbb400
  24 #define OMAP1610_GPIO4_BASE             0xfffbbc00
  25 #define OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
  26
  27 /* mpu gpio */
  28 static struct __initdata resource omap16xx_mpu_gpio_resources[] = {
  29         {
  30                 .start  = OMAP1_MPUIO_VBASE,
  31                 .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
  32                 .flags  = IORESOURCE_MEM,
  33         },
  34         {
  35                 .start  = INT_MPUIO,
  36                 .flags  = IORESOURCE_IRQ,
  37         },
  38 };
  39
  40 static struct omap_gpio_reg_offs omap16xx_mpuio_regs = {
  41         .revision       = USHRT_MAX,
  42         .direction      = OMAP_MPUIO_IO_CNTL,
  43         .datain         = OMAP_MPUIO_INPUT_LATCH,
  44         .dataout        = OMAP_MPUIO_OUTPUT,
  45         .irqstatus      = OMAP_MPUIO_GPIO_INT,
  46         .irqenable      = OMAP_MPUIO_GPIO_MASKIT,
  47         .irqenable_inv  = true,
  48         .irqctrl        = OMAP_MPUIO_GPIO_INT_EDGE,
  49 };
  50
  51 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
  52         .virtual_irq_start      = IH_MPUIO_BASE,
  53         .is_mpuio               = true,
  54         .bank_width             = 16,
  55         .bank_stride            = 1,
  56         .suspend_support        = true,
  57         .regs                   = &omap16xx_mpuio_regs,
  58 };
  59
  60 static struct platform_device omap16xx_mpu_gpio = {
  61         .name           = "omap_gpio",
  62         .id             = 0,
  63         .dev            = {
  64                 .platform_data = &omap16xx_mpu_gpio_config,
  65         },
  66         .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources),
  67         .resource = omap16xx_mpu_gpio_resources,
  68 };
  69
  70 /* gpio1 */
  71 static struct __initdata resource omap16xx_gpio1_resources[] = {
  72         {
  73                 .start  = OMAP1610_GPIO1_BASE,
  74                 .end    = OMAP1610_GPIO1_BASE + SZ_2K - 1,
  75                 .flags  = IORESOURCE_MEM,
  76         },
  77         {
  78                 .start  = INT_GPIO_BANK1,
  79                 .flags  = IORESOURCE_IRQ,
  80         },
  81 };
  82
  83 static struct omap_gpio_reg_offs omap16xx_gpio_regs = {
  84         .revision       = OMAP1610_GPIO_REVISION,
  85         .direction      = OMAP1610_GPIO_DIRECTION,
  86         .set_dataout    = OMAP1610_GPIO_SET_DATAOUT,
  87         .clr_dataout    = OMAP1610_GPIO_CLEAR_DATAOUT,
  88         .datain         = OMAP1610_GPIO_DATAIN,
  89         .dataout        = OMAP1610_GPIO_DATAOUT,
  90         .irqstatus      = OMAP1610_GPIO_IRQSTATUS1,
  91         .irqenable      = OMAP1610_GPIO_IRQENABLE1,
  92         .set_irqenable  = OMAP1610_GPIO_SET_IRQENABLE1,
  93         .clr_irqenable  = OMAP1610_GPIO_CLEAR_IRQENABLE1,
  94         .wkup_status    = OMAP1610_GPIO_WAKEUPENABLE,
  95         .wkup_clear     = OMAP1610_GPIO_CLEAR_WAKEUPENA,
  96         .wkup_set       = OMAP1610_GPIO_SET_WAKEUPENA,
  97         .edgectrl1      = OMAP1610_GPIO_EDGE_CTRL1,
  98         .edgectrl2      = OMAP1610_GPIO_EDGE_CTRL2,
  99         .sysconfig      = OMAP1610_GPIO_SYSCONFIG,
 100 };
 101
 102 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
 103         .virtual_irq_start      = IH_GPIO_BASE,
 104         .bank_width             = 16,
 105         .suspend_support        = true,
 106         .regs                   = &omap16xx_gpio_regs,
 107 };
 108
 109 static struct platform_device omap16xx_gpio1 = {
 110         .name           = "omap_gpio",
 111         .id             = 1,
 112         .dev            = {
 113                 .platform_data = &omap16xx_gpio1_config,
 114         },
 115         .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
 116         .resource = omap16xx_gpio1_resources,
 117 };
 118
 119 /* gpio2 */
 120 static struct __initdata resource omap16xx_gpio2_resources[] = {
 121         {
 122                 .start  = OMAP1610_GPIO2_BASE,
 123                 .end    = OMAP1610_GPIO2_BASE + SZ_2K - 1,
 124                 .flags  = IORESOURCE_MEM,
 125         },
 126         {
 127                 .start  = INT_1610_GPIO_BANK2,
 128                 .flags  = IORESOURCE_IRQ,
 129         },
 130 };
 131
 132 static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
 133         .virtual_irq_start      = IH_GPIO_BASE + 16,
 134         .bank_width             = 16,
 135         .suspend_support        = true,
 136         .regs                   = &omap16xx_gpio_regs,
 137 };
 138
 139 static struct platform_device omap16xx_gpio2 = {
 140         .name           = "omap_gpio",
 141         .id             = 2,
 142         .dev            = {
 143                 .platform_data = &omap16xx_gpio2_config,
 144         },
 145         .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
 146         .resource = omap16xx_gpio2_resources,
 147 };
 148
 149 /* gpio3 */
 150 static struct __initdata resource omap16xx_gpio3_resources[] = {
 151         {
 152                 .start  = OMAP1610_GPIO3_BASE,
 153                 .end    = OMAP1610_GPIO3_BASE + SZ_2K - 1,
 154                 .flags  = IORESOURCE_MEM,
 155         },
 156         {
 157                 .start  = INT_1610_GPIO_BANK3,
 158                 .flags  = IORESOURCE_IRQ,
 159         },
 160 };
 161
 162 static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
 163         .virtual_irq_start      = IH_GPIO_BASE + 32,
 164         .bank_width             = 16,
 165         .suspend_support        = true,
 166         .regs                   = &omap16xx_gpio_regs,
 167 };
 168
 169 static struct platform_device omap16xx_gpio3 = {
 170         .name           = "omap_gpio",
 171         .id             = 3,
 172         .dev            = {
 173                 .platform_data = &omap16xx_gpio3_config,
 174         },
 175         .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
 176         .resource = omap16xx_gpio3_resources,
 177 };
 178
 179 /* gpio4 */
 180 static struct __initdata resource omap16xx_gpio4_resources[] = {
 181         {
 182                 .start  = OMAP1610_GPIO4_BASE,
 183                 .end    = OMAP1610_GPIO4_BASE + SZ_2K - 1,
 184                 .flags  = IORESOURCE_MEM,
 185         },
 186         {
 187                 .start  = INT_1610_GPIO_BANK4,
 188                 .flags  = IORESOURCE_IRQ,
 189         },
 190 };
 191
 192 static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
 193         .virtual_irq_start      = IH_GPIO_BASE + 48,
 194         .bank_width             = 16,
 195         .suspend_support        = true,
 196         .regs                   = &omap16xx_gpio_regs,
 197 };
 198
 199 static struct platform_device omap16xx_gpio4 = {
 200         .name           = "omap_gpio",
 201         .id             = 4,
 202         .dev            = {
 203                 .platform_data = &omap16xx_gpio4_config,
 204         },
 205         .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
 206         .resource = omap16xx_gpio4_resources,
 207 };
 208
 209 static struct __initdata platform_device * omap16xx_gpio_dev[] = {
 210         &omap16xx_mpu_gpio,
 211         &omap16xx_gpio1,
 212         &omap16xx_gpio2,
 213         &omap16xx_gpio3,
 214         &omap16xx_gpio4,
 215 };
 216
 217 /*
 218  * omap16xx_gpio_init needs to be done before
 219  * machine_init functions access gpio APIs.
 220  * Hence omap16xx_gpio_init is a postcore_initcall.
 221  */
 222 static int __init omap16xx_gpio_init(void)
 223 {
 224         int i;
 225
 226         if (!cpu_is_omap16xx())
 227                 return -EINVAL;
 228
 229         for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++)
 230                 platform_device_register(omap16xx_gpio_dev[i]);
 231
 232         return 0;
 233 }
 234 postcore_initcall(omap16xx_gpio_init);