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