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 };
  49
  50 static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
  51         .virtual_irq_start      = IH_MPUIO_BASE,
  52         .bank_type              = METHOD_MPUIO,
  53         .bank_width             = 16,
  54         .bank_stride            = 1,
  55         .regs                   = &omap16xx_mpuio_regs,
  56 };
  57
  58 static struct platform_device omap16xx_mpu_gpio = {
  59         .name           = "omap_gpio",
  60         .id             = 0,
  61         .dev            = {
  62                 .platform_data = &omap16xx_mpu_gpio_config,
  63         },
  64         .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources),
  65         .resource = omap16xx_mpu_gpio_resources,
  66 };
  67
  68 /* gpio1 */
  69 static struct __initdata resource omap16xx_gpio1_resources[] = {
  70         {
  71                 .start  = OMAP1610_GPIO1_BASE,
  72                 .end    = OMAP1610_GPIO1_BASE + SZ_2K - 1,
  73                 .flags  = IORESOURCE_MEM,
  74         },
  75         {
  76                 .start  = INT_GPIO_BANK1,
  77                 .flags  = IORESOURCE_IRQ,
  78         },
  79 };
  80
  81 static struct omap_gpio_reg_offs omap16xx_gpio_regs = {
  82         .revision       = OMAP1610_GPIO_REVISION,
  83         .direction      = OMAP1610_GPIO_DIRECTION,
  84         .set_dataout    = OMAP1610_GPIO_SET_DATAOUT,
  85         .clr_dataout    = OMAP1610_GPIO_CLEAR_DATAOUT,
  86         .datain         = OMAP1610_GPIO_DATAIN,
  87         .dataout        = OMAP1610_GPIO_DATAOUT,
  88         .irqstatus      = OMAP1610_GPIO_IRQSTATUS1,
  89         .irqenable      = OMAP1610_GPIO_IRQENABLE1,
  90         .set_irqenable  = OMAP1610_GPIO_SET_IRQENABLE1,
  91         .clr_irqenable  = OMAP1610_GPIO_CLEAR_IRQENABLE1,
  92 };
  93
  94 static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
  95         .virtual_irq_start      = IH_GPIO_BASE,
  96         .bank_type              = METHOD_GPIO_1610,
  97         .bank_width             = 16,
  98         .regs                   = &omap16xx_gpio_regs,
  99 };
 100
 101 static struct platform_device omap16xx_gpio1 = {
 102         .name           = "omap_gpio",
 103         .id             = 1,
 104         .dev            = {
 105                 .platform_data = &omap16xx_gpio1_config,
 106         },
 107         .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
 108         .resource = omap16xx_gpio1_resources,
 109 };
 110
 111 /* gpio2 */
 112 static struct __initdata resource omap16xx_gpio2_resources[] = {
 113         {
 114                 .start  = OMAP1610_GPIO2_BASE,
 115                 .end    = OMAP1610_GPIO2_BASE + SZ_2K - 1,
 116                 .flags  = IORESOURCE_MEM,
 117         },
 118         {
 119                 .start  = INT_1610_GPIO_BANK2,
 120                 .flags  = IORESOURCE_IRQ,
 121         },
 122 };
 123
 124 static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
 125         .virtual_irq_start      = IH_GPIO_BASE + 16,
 126         .bank_type              = METHOD_GPIO_1610,
 127         .bank_width             = 16,
 128         .regs                   = &omap16xx_gpio_regs,
 129 };
 130
 131 static struct platform_device omap16xx_gpio2 = {
 132         .name           = "omap_gpio",
 133         .id             = 2,
 134         .dev            = {
 135                 .platform_data = &omap16xx_gpio2_config,
 136         },
 137         .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
 138         .resource = omap16xx_gpio2_resources,
 139 };
 140
 141 /* gpio3 */
 142 static struct __initdata resource omap16xx_gpio3_resources[] = {
 143         {
 144                 .start  = OMAP1610_GPIO3_BASE,
 145                 .end    = OMAP1610_GPIO3_BASE + SZ_2K - 1,
 146                 .flags  = IORESOURCE_MEM,
 147         },
 148         {
 149                 .start  = INT_1610_GPIO_BANK3,
 150                 .flags  = IORESOURCE_IRQ,
 151         },
 152 };
 153
 154 static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
 155         .virtual_irq_start      = IH_GPIO_BASE + 32,
 156         .bank_type              = METHOD_GPIO_1610,
 157         .bank_width             = 16,
 158         .regs                   = &omap16xx_gpio_regs,
 159 };
 160
 161 static struct platform_device omap16xx_gpio3 = {
 162         .name           = "omap_gpio",
 163         .id             = 3,
 164         .dev            = {
 165                 .platform_data = &omap16xx_gpio3_config,
 166         },
 167         .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
 168         .resource = omap16xx_gpio3_resources,
 169 };
 170
 171 /* gpio4 */
 172 static struct __initdata resource omap16xx_gpio4_resources[] = {
 173         {
 174                 .start  = OMAP1610_GPIO4_BASE,
 175                 .end    = OMAP1610_GPIO4_BASE + SZ_2K - 1,
 176                 .flags  = IORESOURCE_MEM,
 177         },
 178         {
 179                 .start  = INT_1610_GPIO_BANK4,
 180                 .flags  = IORESOURCE_IRQ,
 181         },
 182 };
 183
 184 static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
 185         .virtual_irq_start      = IH_GPIO_BASE + 48,
 186         .bank_type              = METHOD_GPIO_1610,
 187         .bank_width             = 16,
 188         .regs                   = &omap16xx_gpio_regs,
 189 };
 190
 191 static struct platform_device omap16xx_gpio4 = {
 192         .name           = "omap_gpio",
 193         .id             = 4,
 194         .dev            = {
 195                 .platform_data = &omap16xx_gpio4_config,
 196         },
 197         .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
 198         .resource = omap16xx_gpio4_resources,
 199 };
 200
 201 static struct __initdata platform_device * omap16xx_gpio_dev[] = {
 202         &omap16xx_mpu_gpio,
 203         &omap16xx_gpio1,
 204         &omap16xx_gpio2,
 205         &omap16xx_gpio3,
 206         &omap16xx_gpio4,
 207 };
 208
 209 /*
 210  * omap16xx_gpio_init needs to be done before
 211  * machine_init functions access gpio APIs.
 212  * Hence omap16xx_gpio_init is a postcore_initcall.
 213  */
 214 static int __init omap16xx_gpio_init(void)
 215 {
 216         int i;
 217
 218         if (!cpu_is_omap16xx())
 219                 return -EINVAL;
 220
 221         for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++)
 222                 platform_device_register(omap16xx_gpio_dev[i]);
 223
 224         gpio_bank_count = ARRAY_SIZE(omap16xx_gpio_dev);
 225
 226         return 0;
 227 }
 228 postcore_initcall(omap16xx_gpio_init);