diff options
Diffstat (limited to 'drivers/leds/leds-da903x.c')
| -rw-r--r-- | drivers/leds/leds-da903x.c | 63 |
1 files changed, 23 insertions, 40 deletions
diff --git a/drivers/leds/leds-da903x.c b/drivers/leds/leds-da903x.c index c263a21db829..71209b3c8f1e 100644 --- a/drivers/leds/leds-da903x.c +++ b/drivers/leds/leds-da903x.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * LEDs driver for Dialog Semiconductor DA9030/DA9034 * @@ -6,18 +7,12 @@ * * Copyright (C) 2006-2008 Marvell International Ltd. * Eric Miao <eric.miao@marvell.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/platform_device.h> #include <linux/leds.h> -#include <linux/workqueue.h> #include <linux/mfd/da903x.h> #include <linux/slab.h> @@ -34,9 +29,7 @@ struct da903x_led { struct led_classdev cdev; - struct work_struct work; struct device *master; - enum led_brightness new_brightness; int id; int flags; }; @@ -44,11 +37,13 @@ struct da903x_led { #define DA9030_LED_OFFSET(id) ((id) - DA9030_ID_LED_1) #define DA9034_LED_OFFSET(id) ((id) - DA9034_ID_LED_1) -static void da903x_led_work(struct work_struct *work) +static int da903x_led_set(struct led_classdev *led_cdev, + enum led_brightness value) { - struct da903x_led *led = container_of(work, struct da903x_led, work); + struct da903x_led *led = + container_of(led_cdev, struct da903x_led, cdev); uint8_t val; - int offset; + int offset, ret = -EINVAL; switch (led->id) { case DA9030_ID_LED_1: @@ -58,42 +53,36 @@ static void da903x_led_work(struct work_struct *work) case DA9030_ID_LED_PC: offset = DA9030_LED_OFFSET(led->id); val = led->flags & ~0x87; - val |= (led->new_brightness) ? 0x80 : 0; /* EN bit */ - val |= (0x7 - (led->new_brightness >> 5)) & 0x7; /* PWM<2:0> */ - da903x_write(led->master, DA9030_LED1_CONTROL + offset, val); + val |= value ? 0x80 : 0; /* EN bit */ + val |= (0x7 - (value >> 5)) & 0x7; /* PWM<2:0> */ + ret = da903x_write(led->master, DA9030_LED1_CONTROL + offset, + val); break; case DA9030_ID_VIBRA: val = led->flags & ~0x80; - val |= (led->new_brightness) ? 0x80 : 0; /* EN bit */ - da903x_write(led->master, DA9030_MISC_CONTROL_A, val); + val |= value ? 0x80 : 0; /* EN bit */ + ret = da903x_write(led->master, DA9030_MISC_CONTROL_A, val); break; case DA9034_ID_LED_1: case DA9034_ID_LED_2: offset = DA9034_LED_OFFSET(led->id); - val = (led->new_brightness * 0x5f / LED_FULL) & 0x7f; + val = (value * 0x5f / LED_FULL) & 0x7f; val |= (led->flags & DA9034_LED_RAMP) ? 0x80 : 0; - da903x_write(led->master, DA9034_LED1_CONTROL + offset, val); + ret = da903x_write(led->master, DA9034_LED1_CONTROL + offset, + val); break; case DA9034_ID_VIBRA: - val = led->new_brightness & 0xfe; - da903x_write(led->master, DA9034_VIBRA, val); + val = value & 0xfe; + ret = da903x_write(led->master, DA9034_VIBRA, val); break; } -} -static void da903x_led_set(struct led_classdev *led_cdev, - enum led_brightness value) -{ - struct da903x_led *led; - - led = container_of(led_cdev, struct da903x_led, cdev); - led->new_brightness = value; - schedule_work(&led->work); + return ret; } static int da903x_led_probe(struct platform_device *pdev) { - struct led_info *pdata = pdev->dev.platform_data; + struct led_info *pdata = dev_get_platdata(&pdev->dev); struct da903x_led *led; int id, ret; @@ -109,22 +98,17 @@ static int da903x_led_probe(struct platform_device *pdev) } led = devm_kzalloc(&pdev->dev, sizeof(struct da903x_led), GFP_KERNEL); - if (led == NULL) { - dev_err(&pdev->dev, "failed to alloc memory for LED%d\n", id); + if (!led) return -ENOMEM; - } led->cdev.name = pdata->name; led->cdev.default_trigger = pdata->default_trigger; - led->cdev.brightness_set = da903x_led_set; + led->cdev.brightness_set_blocking = da903x_led_set; led->cdev.brightness = LED_OFF; led->id = id; led->flags = pdata->flags; led->master = pdev->dev.parent; - led->new_brightness = LED_OFF; - - INIT_WORK(&led->work, da903x_led_work); ret = led_classdev_register(led->master, &led->cdev); if (ret) { @@ -133,21 +117,20 @@ static int da903x_led_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, led); + return 0; } -static int da903x_led_remove(struct platform_device *pdev) +static void da903x_led_remove(struct platform_device *pdev) { struct da903x_led *led = platform_get_drvdata(pdev); led_classdev_unregister(&led->cdev); - return 0; } static struct platform_driver da903x_led_driver = { .driver = { .name = "da903x-led", - .owner = THIS_MODULE, }, .probe = da903x_led_probe, .remove = da903x_led_remove, |