arch/arm/mach-omap1/gpio15xx.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * OMAP15xx specific gpio init
   4  *
   5  * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
   6  *
   7  * Author:
   8  *      Charulatha V <charu@ti.com>
   9  */
  10
  11 #include <linux/platform_data/gpio-omap.h>
  12 #include <linux/soc/ti/omap1-soc.h>
  13 #include <asm/irq.h>
  14
  15 #include "irqs.h"
  16
  17 #define OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
  18 #define OMAP1510_GPIO_BASE              0xFFFCE000
  19
  20 /* gpio1 */
  21 static struct resource omap15xx_mpu_gpio_resources[] = {
  22         {
  23                 .start  = OMAP1_MPUIO_VBASE,
  24                 .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
  25                 .flags  = IORESOURCE_MEM,
  26         },
  27         {
  28                 .start  = INT_MPUIO,
  29                 .flags  = IORESOURCE_IRQ,
  30         },
  31 };
  32
  33 static struct omap_gpio_reg_offs omap15xx_mpuio_regs = {
  34         .revision       = USHRT_MAX,
  35         .direction      = OMAP_MPUIO_IO_CNTL,
  36         .datain         = OMAP_MPUIO_INPUT_LATCH,
  37         .dataout        = OMAP_MPUIO_OUTPUT,
  38         .irqstatus      = OMAP_MPUIO_GPIO_INT,
  39         .irqenable      = OMAP_MPUIO_GPIO_MASKIT,
  40         .irqenable_inv  = true,
  41         .irqctrl        = OMAP_MPUIO_GPIO_INT_EDGE,
  42 };
  43
  44 static struct omap_gpio_platform_data omap15xx_mpu_gpio_config = {
  45         .is_mpuio               = true,
  46         .bank_width             = 16,
  47         .bank_stride            = 1,
  48         .regs                   = &omap15xx_mpuio_regs,
  49 };
  50
  51 static struct platform_device omap15xx_mpu_gpio = {
  52         .name           = "omap_gpio",
  53         .id             = 0,
  54         .dev            = {
  55                 .platform_data = &omap15xx_mpu_gpio_config,
  56         },
  57         .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
  58         .resource = omap15xx_mpu_gpio_resources,
  59 };
  60
  61 /* gpio2 */
  62 static struct resource omap15xx_gpio_resources[] = {
  63         {
  64                 .start  = OMAP1510_GPIO_BASE,
  65                 .end    = OMAP1510_GPIO_BASE + SZ_2K - 1,
  66                 .flags  = IORESOURCE_MEM,
  67         },
  68         {
  69                 .start  = INT_GPIO_BANK1,
  70                 .flags  = IORESOURCE_IRQ,
  71         },
  72 };
  73
  74 static struct omap_gpio_reg_offs omap15xx_gpio_regs = {
  75         .revision       = USHRT_MAX,
  76         .direction      = OMAP1510_GPIO_DIR_CONTROL,
  77         .datain         = OMAP1510_GPIO_DATA_INPUT,
  78         .dataout        = OMAP1510_GPIO_DATA_OUTPUT,
  79         .irqstatus      = OMAP1510_GPIO_INT_STATUS,
  80         .irqenable      = OMAP1510_GPIO_INT_MASK,
  81         .irqenable_inv  = true,
  82         .irqctrl        = OMAP1510_GPIO_INT_CONTROL,
  83         .pinctrl        = OMAP1510_GPIO_PIN_CONTROL,
  84 };
  85
  86 static struct omap_gpio_platform_data omap15xx_gpio_config = {
  87         .bank_width             = 16,
  88         .regs                   = &omap15xx_gpio_regs,
  89 };
  90
  91 static struct platform_device omap15xx_gpio = {
  92         .name           = "omap_gpio",
  93         .id             = 1,
  94         .dev            = {
  95                 .platform_data = &omap15xx_gpio_config,
  96         },
  97         .num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
  98         .resource = omap15xx_gpio_resources,
  99 };
 100
 101 /*
 102  * omap15xx_gpio_init needs to be done before
 103  * machine_init functions access gpio APIs.
 104  * Hence omap15xx_gpio_init is a postcore_initcall.
 105  */
 106 static int __init omap15xx_gpio_init(void)
 107 {
 108         if (!cpu_is_omap15xx())
 109                 return -EINVAL;
 110
 111         platform_device_register(&omap15xx_mpu_gpio);
 112         platform_device_register(&omap15xx_gpio);
 113
 114         return 0;
 115 }
 116 postcore_initcall(omap15xx_gpio_init);