// SPDX-License-Identifier: GPL-2.0-only
/*
 * linux/drivers/leds/leds-locomo.c
 *
 * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/leds.h>

#include <asm/hardware/locomo.h>

static void locomoled_brightness_set(struct led_classdev *led_cdev,
                                enum led_brightness value, int offset)
{
        struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
        unsigned long flags;

        local_irq_save(flags);
        if (value)
                locomo_writel(LOCOMO_LPT_TOFH, locomo_dev->mapbase + offset);
        else
                locomo_writel(LOCOMO_LPT_TOFL, locomo_dev->mapbase + offset);
        local_irq_restore(flags);
}

static void locomoled_brightness_set0(struct led_classdev *led_cdev,
                                enum led_brightness value)
{
        locomoled_brightness_set(led_cdev, value, LOCOMO_LPT0);
}

static void locomoled_brightness_set1(struct led_classdev *led_cdev,
                                enum led_brightness value)
{
        locomoled_brightness_set(led_cdev, value, LOCOMO_LPT1);
}

static struct led_classdev locomo_led0 = {
        .name                   = "locomo:amber:charge",
        .default_trigger        = "main-battery-charging",
        .brightness_set         = locomoled_brightness_set0,
};

static struct led_classdev locomo_led1 = {
        .name                   = "locomo:green:mail",
        .default_trigger        = "nand-disk",
        .brightness_set         = locomoled_brightness_set1,
};

static int locomoled_probe(struct locomo_dev *ldev)
{
        int ret;

        ret = devm_led_classdev_register(&ldev->dev, &locomo_led0);
        if (ret < 0)
                return ret;

        return  devm_led_classdev_register(&ldev->dev, &locomo_led1);
}


static struct locomo_driver locomoled_driver = {
        .drv = {
                .name = "locomoled"
        },
        .devid  = LOCOMO_DEVID_LED,
        .probe  = locomoled_probe,
};

static int __init locomoled_init(void)
{
        return locomo_driver_register(&locomoled_driver);
}
module_init(locomoled_init);

MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
MODULE_DESCRIPTION("Locomo LED driver");
MODULE_LICENSE("GPL");