#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/cdev.h>
#include <linux/uaccess.h>
#include <asm/io.h>
#include <linux/platform_device.h>

static struct resource led_resource[] = {
    [0] = {
        .start = 0x50000000 + 0x894,
        .end = 0x50000000 + 0x894 + 3,
        .flags = IORESOURCE_MEM,
    },
    [1] = {
        .start = 0x50000000 + 0xA28,
        .end = 0x50000000 + 0xA28 + 3,
        .flags = IORESOURCE_MEM,
    },
    [2] = {
        .start = 0x50002000 + 0x00,
        .end = 0x50002000 + 0x00 + 3,
        .flags = IORESOURCE_MEM,
    },
    [3] = {
        .start = 0x50002000 + 0x18,
        .end = 0x50002000 + 0x18 + 3,
        .flags = IORESOURCE_MEM,
    },
};

static void led_release(struct device *dev)
{
    /* do nothing */
}

static struct platform_device led_device = {
    .name = "led_jzh",
    .id = -1,
    .num_resources = ARRAY_SIZE(led_resource),
    .resource = led_resource,
    .dev = {
        .release = led_release,
    },
};

static int __init led_device_init(void)
{
    platform_device_register(&led_device);

    return 0;
}

static void __exit led_device_exit(void)
{
    platform_device_unregister(&led_device);
}

module_init(led_device_init);
module_exit(led_device_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("jzhgonha@163.com");
MODULE_VERSION("V0.1");
MODULE_DESCRIPTION("A simple LED driver for STM32MP157");