// SPDX-License-Identifier: GPL-2.0-only
/*
 * OMAP15xx specific gpio init
 *
 * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
 *
 * Author:
 *      Charulatha V <charu@ti.com>
 */

#include <linux/platform_data/gpio-omap.h>
#include <linux/soc/ti/omap1-soc.h>
#include <asm/irq.h>

#include "irqs.h"

#define OMAP1_MPUIO_VBASE               OMAP1_MPUIO_BASE
#define OMAP1510_GPIO_BASE              0xFFFCE000

/* gpio1 */
static struct resource omap15xx_mpu_gpio_resources[] = {
        {
                .start  = OMAP1_MPUIO_VBASE,
                .end    = OMAP1_MPUIO_VBASE + SZ_2K - 1,
                .flags  = IORESOURCE_MEM,
        },
        {
                .start  = INT_MPUIO,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct omap_gpio_reg_offs omap15xx_mpuio_regs = {
        .revision       = USHRT_MAX,
        .direction      = OMAP_MPUIO_IO_CNTL,
        .datain         = OMAP_MPUIO_INPUT_LATCH,
        .dataout        = OMAP_MPUIO_OUTPUT,
        .irqstatus      = OMAP_MPUIO_GPIO_INT,
        .irqenable      = OMAP_MPUIO_GPIO_MASKIT,
        .irqenable_inv  = true,
        .irqctrl        = OMAP_MPUIO_GPIO_INT_EDGE,
};

static struct omap_gpio_platform_data omap15xx_mpu_gpio_config = {
        .is_mpuio               = true,
        .bank_width             = 16,
        .bank_stride            = 1,
        .regs                   = &omap15xx_mpuio_regs,
};

static struct platform_device omap15xx_mpu_gpio = {
        .name           = "omap_gpio",
        .id             = 0,
        .dev            = {
                .platform_data = &omap15xx_mpu_gpio_config,
        },
        .num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
        .resource = omap15xx_mpu_gpio_resources,
};

/* gpio2 */
static struct resource omap15xx_gpio_resources[] = {
        {
                .start  = OMAP1510_GPIO_BASE,
                .end    = OMAP1510_GPIO_BASE + SZ_2K - 1,
                .flags  = IORESOURCE_MEM,
        },
        {
                .start  = INT_GPIO_BANK1,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct omap_gpio_reg_offs omap15xx_gpio_regs = {
        .revision       = USHRT_MAX,
        .direction      = OMAP1510_GPIO_DIR_CONTROL,
        .datain         = OMAP1510_GPIO_DATA_INPUT,
        .dataout        = OMAP1510_GPIO_DATA_OUTPUT,
        .irqstatus      = OMAP1510_GPIO_INT_STATUS,
        .irqenable      = OMAP1510_GPIO_INT_MASK,
        .irqenable_inv  = true,
        .irqctrl        = OMAP1510_GPIO_INT_CONTROL,
        .pinctrl        = OMAP1510_GPIO_PIN_CONTROL,
};

static struct omap_gpio_platform_data omap15xx_gpio_config = {
        .bank_width             = 16,
        .regs                   = &omap15xx_gpio_regs,
};

static struct platform_device omap15xx_gpio = {
        .name           = "omap_gpio",
        .id             = 1,
        .dev            = {
                .platform_data = &omap15xx_gpio_config,
        },
        .num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
        .resource = omap15xx_gpio_resources,
};

/*
 * omap15xx_gpio_init needs to be done before
 * machine_init functions access gpio APIs.
 * Hence omap15xx_gpio_init is a postcore_initcall.
 */
static int __init omap15xx_gpio_init(void)
{
        if (!cpu_is_omap15xx())
                return -EINVAL;

        platform_device_register(&omap15xx_mpu_gpio);
        platform_device_register(&omap15xx_gpio);

        return 0;
}
postcore_initcall(omap15xx_gpio_init);