forked from luck/tmp_suning_uos_patched
eb25cb9956
This patch converts the IDE specific LED trigger to a generic disk activity LED trigger. The libata core is now a trigger source just like before the IDE disk driver. It's merely a replacement of the string ide by disk. The patch is taken from http://dev.gentoo.org/~josejx/ata.patch and is widely used by any ibook/powerbook owners with great satisfaction. Likewise, it is very often used successfully on different ARM platforms. Unlike the original patch, the existing 'ide-disk' trigger is still available for backward compatibility. That reduce the amount of patches in affected device trees out of the mainline kernel. For further development, the new name 'disk-activity' should be used. Cc: Joseph Jezak <josejx@gentoo.org> Cc: Jörg Sommer <joerg@alea.gnuu.de> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Stephan Linz <linz@li-pro.net> Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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* LED Triggers Core
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* For the HP Jornada 620/660/680/690 handhelds
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*
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* Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
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* this driver is based on leds-spitz.c by Richard Purdie.
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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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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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#include <asm/hd64461.h>
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#include <mach/hp6xx.h>
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static void hp6xxled_green_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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u8 v8;
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v8 = inb(PKDR);
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if (value)
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outb(v8 & (~PKDR_LED_GREEN), PKDR);
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else
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outb(v8 | PKDR_LED_GREEN, PKDR);
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}
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static void hp6xxled_red_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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u16 v16;
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v16 = inw(HD64461_GPBDR);
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if (value)
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outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
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else
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outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
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}
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static struct led_classdev hp6xx_red_led = {
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.name = "hp6xx:red",
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.default_trigger = "hp6xx-charge",
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.brightness_set = hp6xxled_red_set,
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.flags = LED_CORE_SUSPENDRESUME,
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};
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static struct led_classdev hp6xx_green_led = {
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.name = "hp6xx:green",
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.default_trigger = "disk-activity",
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.brightness_set = hp6xxled_green_set,
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.flags = LED_CORE_SUSPENDRESUME,
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};
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static int hp6xxled_probe(struct platform_device *pdev)
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{
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int ret;
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ret = devm_led_classdev_register(&pdev->dev, &hp6xx_red_led);
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if (ret < 0)
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return ret;
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return devm_led_classdev_register(&pdev->dev, &hp6xx_green_led);
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}
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static struct platform_driver hp6xxled_driver = {
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.probe = hp6xxled_probe,
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.driver = {
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.name = "hp6xx-led",
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},
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};
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module_platform_driver(hp6xxled_driver);
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MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
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MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:hp6xx-led");
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