mirror of https://gitee.com/openkylin/linux.git
123 lines
2.7 KiB
C
123 lines
2.7 KiB
C
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/*
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* drivers/leds/leds-cm-x270.c
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*
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* Copyright 2007 CompuLab Ltd.
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* Author: Mike Rapoport <mike@compulab.co.il>
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*
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* Based on leds-corgi.c
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* Author: Richard Purdie <rpurdie@openedhand.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/pxa-regs.h>
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#define GPIO_RED_LED (93)
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#define GPIO_GREEN_LED (94)
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static void cmx270_red_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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GPCR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
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else
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GPSR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
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}
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static void cmx270_green_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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GPCR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
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else
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GPSR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
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}
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static struct led_classdev cmx270_red_led = {
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.name = "cm-x270:red",
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.default_trigger = "nand-disk",
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.brightness_set = cmx270_red_set,
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};
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static struct led_classdev cmx270_green_led = {
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.name = "cm-x270:green",
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.default_trigger = "heartbeat",
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.brightness_set = cmx270_green_set,
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};
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#ifdef CONFIG_PM
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static int cmx270led_suspend(struct platform_device *dev, pm_message_t state)
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{
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led_classdev_suspend(&cmx270_red_led);
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led_classdev_suspend(&cmx270_green_led);
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return 0;
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}
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static int cmx270led_resume(struct platform_device *dev)
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{
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led_classdev_resume(&cmx270_red_led);
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led_classdev_resume(&cmx270_green_led);
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return 0;
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}
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#endif
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static int cmx270led_probe(struct platform_device *pdev)
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{
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int ret;
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ret = led_classdev_register(&pdev->dev, &cmx270_red_led);
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if (ret < 0)
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return ret;
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ret = led_classdev_register(&pdev->dev, &cmx270_green_led);
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if (ret < 0)
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led_classdev_unregister(&cmx270_red_led);
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return ret;
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}
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static int cmx270led_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&cmx270_red_led);
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led_classdev_unregister(&cmx270_green_led);
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return 0;
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}
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static struct platform_driver cmx270led_driver = {
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.probe = cmx270led_probe,
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.remove = cmx270led_remove,
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#ifdef CONFIG_PM
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.suspend = cmx270led_suspend,
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.resume = cmx270led_resume,
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#endif
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.driver = {
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.name = "cm-x270-led",
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},
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};
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static int __init cmx270led_init(void)
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{
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return platform_driver_register(&cmx270led_driver);
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}
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static void __exit cmx270led_exit(void)
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{
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platform_driver_unregister(&cmx270led_driver);
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}
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module_init(cmx270led_init);
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module_exit(cmx270led_exit);
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MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
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MODULE_DESCRIPTION("CM-x270 LED driver");
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MODULE_LICENSE("GPL");
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