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leds: Add LED class driver for regulator driven LEDs.

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This driver provides an interface for controlling LEDs (or vibrators)
connected to PMICs for which there is a regulator framework driver.

This driver can be used, for instance, to control vibrator on all Motorola EZX
phones using the pcap-regulator driver services.

Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
This commit is contained in:
Antonio Ospite 2009-12-07 15:08:13 +01:00 • committed by Richard Purdie
parent 3c0f6e1edd
commit d4cc6a2eee
4 changed files with 295 additions and 0 deletions
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46
include/linux/leds-regulator.h Normal file
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/*
* leds-regulator.h - platform data structure for regulator driven LEDs.
*
* Copyright (C) 2009 Antonio Ospite <ospite@studenti.unina.it>
*
* 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.
*
*/
#ifndef __LINUX_LEDS_REGULATOR_H
#define __LINUX_LEDS_REGULATOR_H
/*
* Use "vled" as supply id when declaring the regulator consumer:
*
* static struct regulator_consumer_supply pcap_regulator_VVIB_consumers [] = {
* { .dev_name = "leds-regulator.0", supply = "vled" },
* };
*
* If you have several regulator driven LEDs, you can append a numerical id to
* .dev_name as done above, and use the same id when declaring the platform
* device:
*
* static struct led_regulator_platform_data a780_vibrator_data = {
* .name = "a780::vibrator",
* };
*
* static struct platform_device a780_vibrator = {
* .name = "leds-regulator",
* .id = 0,
* .dev = {
* .platform_data = &a780_vibrator_data,
* },
* };
*/
#include <linux/leds.h>
struct led_regulator_platform_data {
char *name; /* LED name as expected by LED class */
enum led_brightness brightness; /* initial brightness value */
};
#endif /* __LINUX_LEDS_REGULATOR_H */