leds: Add driver for HP harddisk protection LEDs (9c78ff6e) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/leds/Kconfig

+7 −0

Original line number	Original line	Diff line number	Diff line
	@@ -113,6 +113,13 @@ config LEDS_GPIO
	outputs. To be useful the particular board must have LEDs		outputs. To be useful the particular board must have LEDs
	and they must be connected to the GPIO lines.		and they must be connected to the GPIO lines.

			config LEDS_HP_DISK
			tristate "LED Support for disk protection LED on HP notebooks"
			depends on LEDS_CLASS && ACPI
			help
			This option enable support for disk protection LED, found on
			newer HP notebooks.

	config LEDS_CLEVO_MAIL		config LEDS_CLEVO_MAIL
	tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"		tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"
	depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI && EXPERIMENTAL		depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI && EXPERIMENTAL

drivers/leds/Makefile

+1 −0

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	@@ -22,6 +22,7 @@ obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
	obj-$(CONFIG_LEDS_FSG) += leds-fsg.o		obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
	obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o		obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o
	obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o		obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o
			obj-$(CONFIG_LEDS_HP_DISK) += leds-hp-disk.o

	# LED Triggers		# LED Triggers
	obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o		obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o

drivers/leds/leds-hp-disk.c

0 → 100644

+156 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* leds-hp-disk.c - driver for HP "hard disk protection" LED
			*
			* Copyright (C) 2008 Pavel Machek
			*
			* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
			*/

			#include <linux/kernel.h>
			#include <linux/init.h>
			#include <linux/dmi.h>
			#include <linux/module.h>
			#include <linux/types.h>
			#include <linux/platform_device.h>
			#include <linux/interrupt.h>
			#include <linux/input.h>
			#include <linux/kthread.h>
			#include <linux/version.h>
			#include <linux/leds.h>
			#include <acpi/acpi_drivers.h>

			#define DRIVER_NAME "leds-hp-disk"
			#define ACPI_MDPS_CLASS "led"

			/* For automatic insertion of the module */
			static struct acpi_device_id hpled_device_ids[] = {
			{"HPQ0004", 0}, /* HP Mobile Data Protection System PNP */
			{"", 0},
			};
			MODULE_DEVICE_TABLE(acpi, hpled_device_ids);

			struct acpi_hpled {
			struct acpi_device device; / The ACPI device */
			};

			static struct acpi_hpled adev;

			static acpi_status hpled_acpi_write(acpi_handle handle, int reg)
			{
			unsigned long ret; /* Not used when writing */
			union acpi_object in_obj[1];
			struct acpi_object_list args = { 1, in_obj };

			in_obj[0].type = ACPI_TYPE_INTEGER;
			in_obj[0].integer.value = reg;

			return acpi_evaluate_integer(handle, "ALED", &args, &ret);
			}

			static void hpled_set(struct led_classdev *led_cdev,
			enum led_brightness value)
			{
			hpled_acpi_write(adev.device->handle, !!value);
			}

			static struct led_classdev hpled_led = {
			.name = "hp:red:hddprotection",
			.default_trigger = "heartbeat",
			.brightness_set = hpled_set,
			};

			#ifdef CONFIG_PM
			static int hpled_suspend(struct acpi_device *dev, pm_message_t state)
			{
			led_classdev_suspend(&hpled_led);
			return 0;
			}

			static int hpled_resume(struct acpi_device *dev)
			{
			led_classdev_resume(&hpled_led);
			return 0;
			}
			#else
			#define hpled_suspend NULL
			#define hpled_resume NULL
			#endif

			static int hpled_add(struct acpi_device *device)
			{
			int ret;

			if (!device)
			return -EINVAL;

			adev.device = device;
			strcpy(acpi_device_name(device), DRIVER_NAME);
			strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
			acpi_driver_data(device) = &adev;

			ret = led_classdev_register(NULL, &hpled_led);
			return ret;
			}

			static int hpled_remove(struct acpi_device *device, int type)
			{
			if (!device)
			return -EINVAL;

			led_classdev_unregister(&hpled_led);
			return 0;
			}



			static struct acpi_driver leds_hp_driver = {
			.name = DRIVER_NAME,
			.class = ACPI_MDPS_CLASS,
			.ids = hpled_device_ids,
			.ops = {
			.add = hpled_add,
			.remove = hpled_remove,
			.suspend = hpled_suspend,
			.resume = hpled_resume,
			}
			};

			static int __init hpled_init_module(void)
			{
			int ret;

			if (acpi_disabled)
			return -ENODEV;

			ret = acpi_bus_register_driver(&leds_hp_driver);
			if (ret < 0)
			return ret;

			printk(KERN_INFO DRIVER_NAME " driver loaded.\n");

			return 0;
			}

			static void __exit hpled_exit_module(void)
			{
			acpi_bus_unregister_driver(&leds_hp_driver);
			}

			MODULE_DESCRIPTION("Driver for HP disk protection LED");
			MODULE_AUTHOR("Pavel Machek <pavel@suse.cz>");
			MODULE_LICENSE("GPL");

			module_init(hpled_init_module);
			module_exit(hpled_exit_module);