leds: Add Cobalt Raq series LEDs support (97da7aaf) · Commits · e / devices / android_kernel_sony_msm8994_rework

drivers/leds/Kconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,13 @@ config LEDS_COBALT_QUBE
		help
		This option enables support for the front LED on Cobalt Qube series

		config LEDS_COBALT_RAQ
		bool "LED Support for the Cobalt Raq series"
		depends on LEDS_CLASS && MIPS_COBALT
		select LEDS_TRIGGERS
		help
		This option enables support for the Cobalt Raq series LEDs.

		config LEDS_GPIO
		tristate "LED Support for GPIO connected LEDs"
		depends on LEDS_CLASS && GENERIC_GPIO

drivers/leds/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
		obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
		obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
		obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
		obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
		obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o

		# LED Triggers

drivers/leds/leds-cobalt-raq.c

0 → 100644

+138 −0

Original line number	Diff line number	Diff line
		/*
		* LEDs driver for the Cobalt Raq series.
		*
		* Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
		*/
		#include <linux/init.h>
		#include <linux/io.h>
		#include <linux/ioport.h>
		#include <linux/leds.h>
		#include <linux/platform_device.h>
		#include <linux/spinlock.h>
		#include <linux/types.h>

		#define LED_WEB 0x04
		#define LED_POWER_OFF 0x08

		static void __iomem *led_port;
		static u8 led_value;
		static DEFINE_SPINLOCK(led_value_lock);

		static void raq_web_led_set(struct led_classdev *led_cdev,
		enum led_brightness brightness)
		{
		unsigned long flags;

		spin_lock_irqsave(&led_value_lock, flags);

		if (brightness)
		led_value \|= LED_WEB;
		else
		led_value &= ~LED_WEB;
		writeb(led_value, led_port);

		spin_unlock_irqrestore(&led_value_lock, flags);
		}

		static struct led_classdev raq_web_led = {
		.name = "raq-web",
		.brightness_set = raq_web_led_set,
		};

		static void raq_power_off_led_set(struct led_classdev *led_cdev,
		enum led_brightness brightness)
		{
		unsigned long flags;

		spin_lock_irqsave(&led_value_lock, flags);

		if (brightness)
		led_value \|= LED_POWER_OFF;
		else
		led_value &= ~LED_POWER_OFF;
		writeb(led_value, led_port);

		spin_unlock_irqrestore(&led_value_lock, flags);
		}

		static struct led_classdev raq_power_off_led = {
		.name = "raq-power-off",
		.brightness_set = raq_power_off_led_set,
		.default_trigger = "power-off",
		};

		static int __devinit cobalt_raq_led_probe(struct platform_device *pdev)
		{
		struct resource *res;
		int retval;

		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!res)
		return -EBUSY;

		led_port = ioremap(res->start, res->end - res->start + 1);
		if (!led_port)
		return -ENOMEM;

		retval = led_classdev_register(&pdev->dev, &raq_power_off_led);
		if (retval)
		goto err_iounmap;

		retval = led_classdev_register(&pdev->dev, &raq_web_led);
		if (retval)
		goto err_unregister;

		return 0;

		err_unregister:
		led_classdev_unregister(&raq_power_off_led);

		err_iounmap:
		iounmap(led_port);
		led_port = NULL;

		return retval;
		}

		static int __devexit cobalt_raq_led_remove(struct platform_device *pdev)
		{
		led_classdev_unregister(&raq_power_off_led);
		led_classdev_unregister(&raq_web_led);

		if (led_port) {
		iounmap(led_port);
		led_port = NULL;
		}

		return 0;
		}

		static struct platform_driver cobalt_raq_led_driver = {
		.probe = cobalt_raq_led_probe,
		.remove = __devexit_p(cobalt_raq_led_remove),
		.driver = {
		.name = "cobalt-raq-leds",
		.owner = THIS_MODULE,
		},
		};

		static int __init cobalt_raq_led_init(void)
		{
		return platform_driver_register(&cobalt_raq_led_driver);
		}

		module_init(cobalt_raq_led_init);