6c152beefb
As discussed on LKML some notion of 'function' is needed in LED naming. This patch adds this to the documentation and standardises existing LED drivers. Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
/*
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* LED Triggers Core
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*
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* Copyright 2005-2006 Openedhand Ltd.
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*
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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/mach-types.h>
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#include <asm/arch/corgi.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/hardware/scoop.h>
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static void corgiled_amber_set(struct led_classdev *led_cdev, enum led_brightness value)
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{
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if (value)
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GPSR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
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else
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GPCR0 = GPIO_bit(CORGI_GPIO_LED_ORANGE);
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}
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static void corgiled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
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{
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if (value)
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set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
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else
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reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
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}
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static struct led_classdev corgi_amber_led = {
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.name = "corgi:amber:charge",
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.default_trigger = "sharpsl-charge",
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.brightness_set = corgiled_amber_set,
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};
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static struct led_classdev corgi_green_led = {
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.name = "corgi:green:mail",
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.default_trigger = "nand-disk",
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.brightness_set = corgiled_green_set,
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};
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#ifdef CONFIG_PM
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static int corgiled_suspend(struct platform_device *dev, pm_message_t state)
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{
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#ifdef CONFIG_LEDS_TRIGGERS
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if (corgi_amber_led.trigger && strcmp(corgi_amber_led.trigger->name, "sharpsl-charge"))
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#endif
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led_classdev_suspend(&corgi_amber_led);
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led_classdev_suspend(&corgi_green_led);
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return 0;
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}
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static int corgiled_resume(struct platform_device *dev)
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{
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led_classdev_resume(&corgi_amber_led);
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led_classdev_resume(&corgi_green_led);
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return 0;
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}
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#endif
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static int corgiled_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, &corgi_amber_led);
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if (ret < 0)
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return ret;
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ret = led_classdev_register(&pdev->dev, &corgi_green_led);
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if (ret < 0)
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led_classdev_unregister(&corgi_amber_led);
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return ret;
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}
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static int corgiled_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&corgi_amber_led);
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led_classdev_unregister(&corgi_green_led);
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return 0;
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}
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static struct platform_driver corgiled_driver = {
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.probe = corgiled_probe,
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.remove = corgiled_remove,
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#ifdef CONFIG_PM
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.suspend = corgiled_suspend,
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.resume = corgiled_resume,
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#endif
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.driver = {
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.name = "corgi-led",
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},
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};
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static int __init corgiled_init(void)
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{
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return platform_driver_register(&corgiled_driver);
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}
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static void __exit corgiled_exit(void)
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{
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platform_driver_unregister(&corgiled_driver);
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}
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module_init(corgiled_init);
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module_exit(corgiled_exit);
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MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
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MODULE_DESCRIPTION("Corgi LED driver");
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MODULE_LICENSE("GPL");
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