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         .direction      = OMAP_MPUIO_IO_CNTL,
  42         .datain         = OMAP_MPUIO_INPUT_LATCH,
  43         .dataout        = OMAP_MPUIO_OUTPUT,
  44         .irqstatus      = OMAP_MPUIO_GPIO_INT,
  45         .irqenable      = OMAP_MPUIO_GPIO_MASKIT,
  46         .irqenable_inv  = true,
  47 };
  48
  49 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
  50         .virtual_irq_start      = IH_MPUIO_BASE,
  51         .bank_type              = METHOD_MPUIO,
  52         .bank_width             = 16,
  53         .bank_stride            = 1,
  54         .regs                   = &omap16xx_mpuio_regs,
  55 };
  56
  57 static struct __initdata platform_device omap16xx_mpu_gpio = {
  58         .name           = "omap_gpio",
  59         .id             = 0,
  60         .dev            = {
  61                 .platform_data = &omap16xx_mpu_gpio_config,
  62         },
  63         .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources),
  64         .resource = omap16xx_mpu_gpio_resources,
  65 };
  66
  67 /* gpio1 */
  68 static struct __initdata resource omap16xx_gpio1_resources[] = {
  69         {
  70                 .start  = OMAP1610_GPIO1_BASE,
  71                 .end    = OMAP1610_GPIO1_BASE + SZ_2K - 1,
  72                 .flags  = IORESOURCE_MEM,
  73         },
  74         {
  75                 .start  = INT_GPIO_BANK1,
  76                 .flags  = IORESOURCE_IRQ,
  77         },
  78 };
  79
  80 static struct omap_gpio_reg_offs omap16xx_gpio_regs = {
  81         .direction      = OMAP1610_GPIO_DIRECTION,
  82         .set_dataout    = OMAP1610_GPIO_SET_DATAOUT,
  83         .clr_dataout    = OMAP1610_GPIO_CLEAR_DATAOUT,
  84         .datain         = OMAP1610_GPIO_DATAIN,
  85         .dataout        = OMAP1610_GPIO_DATAOUT,
  86         .irqstatus      = OMAP1610_GPIO_IRQSTATUS1,
  87         .irqenable      = OMAP1610_GPIO_IRQENABLE1,
  88         .set_irqenable  = OMAP1610_GPIO_SET_IRQENABLE1,
  89         .clr_irqenable  = OMAP1610_GPIO_CLEAR_IRQENABLE1,
  90 };
  91
  92 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
  93         .virtual_irq_start      = IH_GPIO_BASE,
  94         .bank_type              = METHOD_GPIO_1610,
  95         .bank_width             = 16,
  96         .regs                   = &omap16xx_gpio_regs,
  97 };
  98
  99 static struct __initdata platform_device omap16xx_gpio1 = {
 100         .name           = "omap_gpio",
 101         .id             = 1,
 102         .dev            = {
 103                 .platform_data = &omap16xx_gpio1_config,
 104         },
 105         .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
 106         .resource = omap16xx_gpio1_resources,
 107 };
 108
 109 /* gpio2 */
 110 static struct __initdata resource omap16xx_gpio2_resources[] = {
 111         {
 112                 .start  = OMAP1610_GPIO2_BASE,
 113                 .end    = OMAP1610_GPIO2_BASE + SZ_2K - 1,
 114                 .flags  = IORESOURCE_MEM,
 115         },
 116         {
 117                 .start  = INT_1610_GPIO_BANK2,
 118                 .flags  = IORESOURCE_IRQ,
 119         },
 120 };
 121
 122 static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
 123         .virtual_irq_start      = IH_GPIO_BASE + 16,
 124         .bank_type              = METHOD_GPIO_1610,
 125         .bank_width             = 16,
 126         .regs                   = &omap16xx_gpio_regs,
 127 };
 128
 129 static struct __initdata platform_device omap16xx_gpio2 = {
 130         .name           = "omap_gpio",
 131         .id             = 2,
 132         .dev            = {
 133                 .platform_data = &omap16xx_gpio2_config,
 134         },
 135         .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
 136         .resource = omap16xx_gpio2_resources,
 137 };
 138
 139 /* gpio3 */
 140 static struct __initdata resource omap16xx_gpio3_resources[] = {
 141         {
 142                 .start  = OMAP1610_GPIO3_BASE,
 143                 .end    = OMAP1610_GPIO3_BASE + SZ_2K - 1,
 144                 .flags  = IORESOURCE_MEM,
 145         },
 146         {
 147                 .start  = INT_1610_GPIO_BANK3,
 148                 .flags  = IORESOURCE_IRQ,
 149         },
 150 };
 151
 152 static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
 153         .virtual_irq_start      = IH_GPIO_BASE + 32,
 154         .bank_type              = METHOD_GPIO_1610,
 155         .bank_width             = 16,
 156         .regs                   = &omap16xx_gpio_regs,
 157 };
 158
 159 static struct __initdata platform_device omap16xx_gpio3 = {
 160         .name           = "omap_gpio",
 161         .id             = 3,
 162         .dev            = {
 163                 .platform_data = &omap16xx_gpio3_config,
 164         },
 165         .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
 166         .resource = omap16xx_gpio3_resources,
 167 };
 168
 169 /* gpio4 */
 170 static struct __initdata resource omap16xx_gpio4_resources[] = {
 171         {
 172                 .start  = OMAP1610_GPIO4_BASE,
 173                 .end    = OMAP1610_GPIO4_BASE + SZ_2K - 1,
 174                 .flags  = IORESOURCE_MEM,
 175         },
 176         {
 177                 .start  = INT_1610_GPIO_BANK4,
 178                 .flags  = IORESOURCE_IRQ,
 179         },
 180 };
 181
 182 static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
 183         .virtual_irq_start      = IH_GPIO_BASE + 48,
 184         .bank_type              = METHOD_GPIO_1610,
 185         .bank_width             = 16,
 186         .regs                   = &omap16xx_gpio_regs,
 187 };
 188
 189 static struct __initdata platform_device omap16xx_gpio4 = {
 190         .name           = "omap_gpio",
 191         .id             = 4,
 192         .dev            = {
 193                 .platform_data = &omap16xx_gpio4_config,
 194         },
 195         .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
 196         .resource = omap16xx_gpio4_resources,
 197 };
 198
 199 static struct __initdata platform_device * omap16xx_gpio_dev[] = {
 200         &omap16xx_mpu_gpio,
 201         &omap16xx_gpio1,
 202         &omap16xx_gpio2,
 203         &omap16xx_gpio3,
 204         &omap16xx_gpio4,
 205 };
 206
 207 /*
 208  * omap16xx_gpio_init needs to be done before
 209  * machine_init functions access gpio APIs.
 210  * Hence omap16xx_gpio_init is a postcore_initcall.
 211  */
 212 static int __init omap16xx_gpio_init(void)
 213 {
 214         int i;
 215
 216         if (!cpu_is_omap16xx())
 217                 return -EINVAL;
 218
 219         for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++)
 220                 platform_device_register(omap16xx_gpio_dev[i]);
 221
 222         gpio_bank_count = ARRAY_SIZE(omap16xx_gpio_dev);
 223
 224         return 0;
 225 }
 226 postcore_initcall(omap16xx_gpio_init);