Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds/acpi: Fix merge fallout from acpi_driver_data change leds: Simplify logic in leds-ams-delta leds: Fix trigger registration race leds: Fix leds-class.c comment leds: Add driver for HP harddisk protection LEDs leds: leds-pca955x - Mark pca955x_led_set() static leds: Remove uneeded leds-cm-x270 driver leds: Remove uneeded strlen calls leds: Add leds-wrap default-trigger leds: Make default trigger fields const leds: Add backlight LED trigger leds: da903x: Add support for LEDs found on DA9030/DA9034hifive-unleashed-5.1
Linus Torvalds
commit
ea541686d8
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@ -113,11 +113,12 @@ config LEDS_GPIO
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outputs. To be useful the particular board must have LEDs
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and they must be connected to the GPIO lines.
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config LEDS_CM_X270
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tristate "LED Support for the CM-X270 LEDs"
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depends on LEDS_CLASS && MACH_ARMCORE
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config LEDS_HP_DISK
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tristate "LED Support for disk protection LED on HP notebooks"
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depends on LEDS_CLASS && ACPI
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help
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This option enables support for the CM-X270 LEDs.
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This option enable support for disk protection LED, found on
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newer HP notebooks.
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config LEDS_CLEVO_MAIL
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tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"
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@ -157,6 +158,13 @@ config LEDS_PCA955X
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LED driver chips accessed via the I2C bus. Supported
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devices include PCA9550, PCA9551, PCA9552, and PCA9553.
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config LEDS_DA903X
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tristate "LED Support for DA9030/DA9034 PMIC"
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depends on LEDS_CLASS && PMIC_DA903X
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help
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This option enables support for on-chip LED drivers found
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on Dialog Semiconductor DA9030/DA9034 PMICs.
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comment "LED Triggers"
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config LEDS_TRIGGERS
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@ -193,6 +201,15 @@ config LEDS_TRIGGER_HEARTBEAT
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load average.
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If unsure, say Y.
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config LEDS_TRIGGER_BACKLIGHT
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tristate "LED backlight Trigger"
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depends on LEDS_TRIGGERS
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help
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This allows LEDs to be controlled as a backlight device: they
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turn off and on when the display is blanked and unblanked.
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If unsure, say N.
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config LEDS_TRIGGER_DEFAULT_ON
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tristate "LED Default ON Trigger"
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depends on LEDS_TRIGGERS
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@ -17,14 +17,16 @@ obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
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obj-$(CONFIG_LEDS_SUNFIRE) += leds-sunfire.o
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obj-$(CONFIG_LEDS_PCA9532) += leds-pca9532.o
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obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
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obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o
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obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
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obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
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obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
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obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o
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obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o
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obj-$(CONFIG_LEDS_HP_DISK) += leds-hp-disk.o
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# LED Triggers
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obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
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obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o
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obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
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obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o
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obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON) += ledtrig-default-on.o
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@ -34,14 +34,11 @@ static ssize_t led_brightness_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct led_classdev *led_cdev = dev_get_drvdata(dev);
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ssize_t ret = 0;
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/* no lock needed for this */
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led_update_brightness(led_cdev);
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sprintf(buf, "%u\n", led_cdev->brightness);
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ret = strlen(buf) + 1;
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return ret;
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return sprintf(buf, "%u\n", led_cdev->brightness);
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}
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static ssize_t led_brightness_store(struct device *dev,
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@ -113,6 +110,9 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
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if (rc)
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goto err_out;
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#ifdef CONFIG_LEDS_TRIGGERS
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init_rwsem(&led_cdev->trigger_lock);
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#endif
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/* add to the list of leds */
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down_write(&leds_list_lock);
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list_add_tail(&led_cdev->node, &leds_list);
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@ -121,8 +121,6 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
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led_update_brightness(led_cdev);
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#ifdef CONFIG_LEDS_TRIGGERS
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init_rwsem(&led_cdev->trigger_lock);
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rc = device_create_file(led_cdev->dev, &dev_attr_trigger);
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if (rc)
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goto err_out_led_list;
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@ -147,7 +145,7 @@ err_out:
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EXPORT_SYMBOL_GPL(led_classdev_register);
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/**
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* __led_classdev_unregister - unregisters a object of led_properties class.
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* led_classdev_unregister - unregisters a object of led_properties class.
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* @led_cdev: the led device to unregister
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*
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* Unregisters a previously registered via led_classdev_register object.
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@ -107,27 +107,27 @@ static int ams_delta_led_resume(struct platform_device *dev)
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static int ams_delta_led_probe(struct platform_device *pdev)
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{
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int i;
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int ret;
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int i, ret;
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for (i = ret = 0; ret >= 0 && i < ARRAY_SIZE(ams_delta_leds); i++) {
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for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++) {
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ret = led_classdev_register(&pdev->dev,
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&ams_delta_leds[i].cdev);
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if (ret < 0)
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goto fail;
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}
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if (ret < 0 && i > 1) {
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for (i = i - 2; i >= 0; i--)
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led_classdev_unregister(&ams_delta_leds[i].cdev);
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}
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return ret;
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return 0;
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fail:
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while (--i >= 0)
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led_classdev_unregister(&ams_delta_leds[i].cdev);
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return ret;
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}
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static int ams_delta_led_remove(struct platform_device *pdev)
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{
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int i;
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for (i = ARRAY_SIZE(ams_delta_leds) - 1; i >= 0; i--)
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for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i--)
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led_classdev_unregister(&ams_delta_leds[i].cdev);
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return 0;
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@ -1,124 +0,0 @@
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/*
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* drivers/leds/leds-cm-x270.c
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*
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* Copyright 2007 CompuLab Ltd.
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* Author: Mike Rapoport <mike@compulab.co.il>
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*
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* Based on leds-corgi.c
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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 <mach/hardware.h>
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#include <mach/pxa-regs.h>
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#define GPIO_RED_LED (93)
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#define GPIO_GREEN_LED (94)
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static void cmx270_red_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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GPCR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
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else
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GPSR(GPIO_RED_LED) = GPIO_bit(GPIO_RED_LED);
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}
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static void cmx270_green_set(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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if (value)
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GPCR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
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else
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GPSR(GPIO_GREEN_LED) = GPIO_bit(GPIO_GREEN_LED);
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}
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static struct led_classdev cmx270_red_led = {
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.name = "cm-x270:red",
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.default_trigger = "nand-disk",
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.brightness_set = cmx270_red_set,
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};
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static struct led_classdev cmx270_green_led = {
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.name = "cm-x270:green",
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.default_trigger = "heartbeat",
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.brightness_set = cmx270_green_set,
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};
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#ifdef CONFIG_PM
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static int cmx270led_suspend(struct platform_device *dev, pm_message_t state)
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{
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led_classdev_suspend(&cmx270_red_led);
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led_classdev_suspend(&cmx270_green_led);
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return 0;
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}
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static int cmx270led_resume(struct platform_device *dev)
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{
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led_classdev_resume(&cmx270_red_led);
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led_classdev_resume(&cmx270_green_led);
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return 0;
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}
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#endif
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static int cmx270led_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, &cmx270_red_led);
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if (ret < 0)
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return ret;
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ret = led_classdev_register(&pdev->dev, &cmx270_green_led);
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if (ret < 0)
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led_classdev_unregister(&cmx270_red_led);
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return ret;
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}
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static int cmx270led_remove(struct platform_device *pdev)
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{
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led_classdev_unregister(&cmx270_red_led);
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led_classdev_unregister(&cmx270_green_led);
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return 0;
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}
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static struct platform_driver cmx270led_driver = {
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.probe = cmx270led_probe,
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.remove = cmx270led_remove,
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#ifdef CONFIG_PM
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.suspend = cmx270led_suspend,
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.resume = cmx270led_resume,
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#endif
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.driver = {
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.name = "cm-x270-led",
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.owner = THIS_MODULE,
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},
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};
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static int __init cmx270led_init(void)
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{
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return platform_driver_register(&cmx270led_driver);
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}
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static void __exit cmx270led_exit(void)
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{
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platform_driver_unregister(&cmx270led_driver);
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}
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module_init(cmx270led_init);
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module_exit(cmx270led_exit);
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MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
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MODULE_DESCRIPTION("CM-x270 LED driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:cm-x270-led");
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@ -0,0 +1,175 @@
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/*
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* LEDs driver for Dialog Semiconductor DA9030/DA9034
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*
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* Copyright (C) 2008 Compulab, Ltd.
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* Mike Rapoport <mike@compulab.co.il>
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*
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* Copyright (C) 2006-2008 Marvell International Ltd.
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* Eric Miao <eric.miao@marvell.com>
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*
|
||||
* 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.
|
||||
*/
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#include <linux/module.h>
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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 <linux/mfd/da903x.h>
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#define DA9030_LED1_CONTROL 0x20
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#define DA9030_LED2_CONTROL 0x21
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#define DA9030_LED3_CONTROL 0x22
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#define DA9030_LED4_CONTROL 0x23
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#define DA9030_LEDPC_CONTROL 0x24
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#define DA9030_MISC_CONTROL_A 0x26 /* Vibrator Control */
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#define DA9034_LED1_CONTROL 0x35
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#define DA9034_LED2_CONTROL 0x36
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||||
#define DA9034_VIBRA 0x40
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||||
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||||
struct da903x_led {
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||||
struct led_classdev cdev;
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||||
struct work_struct work;
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||||
struct device *master;
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||||
enum led_brightness new_brightness;
|
||||
int id;
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||||
int flags;
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||||
};
|
||||
|
||||
#define DA9030_LED_OFFSET(id) ((id) - DA9030_ID_LED_1)
|
||||
#define DA9034_LED_OFFSET(id) ((id) - DA9034_ID_LED_1)
|
||||
|
||||
static void da903x_led_work(struct work_struct *work)
|
||||
{
|
||||
struct da903x_led *led = container_of(work, struct da903x_led, work);
|
||||
uint8_t val;
|
||||
int offset;
|
||||
|
||||
switch (led->id) {
|
||||
case DA9030_ID_LED_1:
|
||||
case DA9030_ID_LED_2:
|
||||
case DA9030_ID_LED_3:
|
||||
case DA9030_ID_LED_4:
|
||||
case DA9030_ID_LED_PC:
|
||||
offset = DA9030_LED_OFFSET(led->id);
|
||||
val = led->flags & ~0x87;
|
||||
val |= (led->new_brightness) ? 0x80 : 0; /* EN bit */
|
||||
val |= (led->new_brightness >> 5) & 0x7; /* PWM<2:0> */
|
||||
da903x_write(led->master, DA9030_LED1_CONTROL + offset, val);
|
||||
break;
|
||||
case DA9030_ID_VIBRA:
|
||||
val = led->flags & ~0x80;
|
||||
val |= (led->new_brightness) ? 0x80 : 0; /* EN bit */
|
||||
da903x_write(led->master, DA9030_MISC_CONTROL_A, val);
|
||||
break;
|
||||
case DA9034_ID_LED_1:
|
||||
case DA9034_ID_LED_2:
|
||||
offset = DA9034_LED_OFFSET(led->id);
|
||||
val = (led->new_brightness * 0x5f / LED_FULL) & 0x7f;
|
||||
val |= (led->flags & DA9034_LED_RAMP) ? 0x80 : 0;
|
||||
da903x_write(led->master, DA9034_LED1_CONTROL + offset, val);
|
||||
break;
|
||||
case DA9034_ID_VIBRA:
|
||||
val = led->new_brightness & 0xfe;
|
||||
da903x_write(led->master, DA9034_VIBRA, val);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void da903x_led_set(struct led_classdev *led_cdev,
|
||||
enum led_brightness value)
|
||||
{
|
||||
struct da903x_led *led;
|
||||
|
||||
led = container_of(led_cdev, struct da903x_led, cdev);
|
||||
led->new_brightness = value;
|
||||
schedule_work(&led->work);
|
||||
}
|
||||
|
||||
static int __devinit da903x_led_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct led_info *pdata = pdev->dev.platform_data;
|
||||
struct da903x_led *led;
|
||||
int id, ret;
|
||||
|
||||
if (pdata == NULL)
|
||||
return 0;
|
||||
|
||||
id = pdev->id;
|
||||
|
||||
if (!((id >= DA9030_ID_LED_1 && id <= DA9030_ID_VIBRA) ||
|
||||
(id >= DA9034_ID_LED_1 && id <= DA9034_ID_VIBRA))) {
|
||||
dev_err(&pdev->dev, "invalid LED ID (%d) specified\n", id);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
led = kzalloc(sizeof(struct da903x_led), GFP_KERNEL);
|
||||
if (led == NULL) {
|
||||
dev_err(&pdev->dev, "failed to alloc memory for LED%d\n", id);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
led->cdev.name = pdata->name;
|
||||
led->cdev.default_trigger = pdata->default_trigger;
|
||||
led->cdev.brightness_set = da903x_led_set;
|
||||
led->cdev.brightness = LED_OFF;
|
||||
|
||||
led->id = id;
|
||||
led->flags = pdata->flags;
|
||||
led->master = pdev->dev.parent;
|
||||
led->new_brightness = LED_OFF;
|
||||
|
||||
INIT_WORK(&led->work, da903x_led_work);
|
||||
|
||||
ret = led_classdev_register(led->master, &led->cdev);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to register LED %d\n", id);
|
||||
goto err;
|
||||
}
|
||||
|
||||
platform_set_drvdata(pdev, led);
|
||||
return 0;
|
||||
|
||||
err:
|
||||
kfree(led);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit da903x_led_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct da903x_led *led = platform_get_drvdata(pdev);
|
||||
|
||||
led_classdev_unregister(&led->cdev);
|
||||
kfree(led);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver da903x_led_driver = {
|
||||
.driver = {
|
||||
.name = "da903x-led",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = da903x_led_probe,
|
||||
.remove = __devexit_p(da903x_led_remove),
|
||||
};
|
||||
|
||||
static int __init da903x_led_init(void)
|
||||
{
|
||||
return platform_driver_register(&da903x_led_driver);
|
||||
}
|
||||
module_init(da903x_led_init);
|
||||
|
||||
static void __exit da903x_led_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&da903x_led_driver);
|
||||
}
|
||||
module_exit(da903x_led_exit);
|
||||
|
||||
MODULE_DESCRIPTION("LEDs driver for Dialog Semiconductor DA9030/DA9034");
|
||||
MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
|
||||
"Mike Rapoport <mike@compulab.co.il>");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:da903x-led");
|
||||
|
|
@ -0,0 +1,156 @@
|
|||
/*
|
||||
* 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);
|
||||
device->driver_data = &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);
|
||||
|
|
@ -226,7 +226,7 @@ static void pca955x_led_work(struct work_struct *work)
|
|||
pca955x_write_ls(pca955x->client, chip_ls, ls);
|
||||
}
|
||||
|
||||
void pca955x_led_set(struct led_classdev *led_cdev, enum led_brightness value)
|
||||
static void pca955x_led_set(struct led_classdev *led_cdev, enum led_brightness value)
|
||||
{
|
||||
struct pca955x_led *pca955x;
|
||||
|
||||
|
|
|
|||
|
|
@ -53,8 +53,9 @@ static void wrap_extra_led_set(struct led_classdev *led_cdev,
|
|||
}
|
||||
|
||||
static struct led_classdev wrap_power_led = {
|
||||
.name = "wrap::power",
|
||||
.brightness_set = wrap_power_led_set,
|
||||
.name = "wrap::power",
|
||||
.brightness_set = wrap_power_led_set,
|
||||
.default_trigger = "default-on",
|
||||
};
|
||||
|
||||
static struct led_classdev wrap_error_led = {
|
||||
|
|
|
|||
|
|
@ -0,0 +1,110 @@
|
|||
/*
|
||||
* Backlight emulation LED trigger
|
||||
*
|
||||
* Copyright 2008 (C) Rodolfo Giometti <giometti@linux.it>
|
||||
* Copyright 2008 (C) Eurotech S.p.A. <info@eurotech.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.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/fb.h>
|
||||
#include <linux/leds.h>
|
||||
#include "leds.h"
|
||||
|
||||
#define BLANK 1
|
||||
#define UNBLANK 0
|
||||
|
||||
struct bl_trig_notifier {
|
||||
struct led_classdev *led;
|
||||
int brightness;
|
||||
int old_status;
|
||||
struct notifier_block notifier;
|
||||
};
|
||||
|
||||
static int fb_notifier_callback(struct notifier_block *p,
|
||||
unsigned long event, void *data)
|
||||
{
|
||||
struct bl_trig_notifier *n = container_of(p,
|
||||
struct bl_trig_notifier, notifier);
|
||||
struct led_classdev *led = n->led;
|
||||
struct fb_event *fb_event = data;
|
||||
int *blank = fb_event->data;
|
||||
|
||||
switch (event) {
|
||||
case FB_EVENT_BLANK :
|
||||
if (*blank && n->old_status == UNBLANK) {
|
||||
n->brightness = led->brightness;
|
||||
led_set_brightness(led, LED_OFF);
|
||||
n->old_status = BLANK;
|
||||
} else if (!*blank && n->old_status == BLANK) {
|
||||
led_set_brightness(led, n->brightness);
|
||||
n->old_status = UNBLANK;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void bl_trig_activate(struct led_classdev *led)
|
||||
{
|
||||
int ret;
|
||||
|
||||
struct bl_trig_notifier *n;
|
||||
|
||||
n = kzalloc(sizeof(struct bl_trig_notifier), GFP_KERNEL);
|
||||
led->trigger_data = n;
|
||||
if (!n) {
|
||||
dev_err(led->dev, "unable to allocate backlight trigger\n");
|
||||
return;
|
||||
}
|
||||
|
||||
n->led = led;
|
||||
n->brightness = led->brightness;
|
||||
n->old_status = UNBLANK;
|
||||
n->notifier.notifier_call = fb_notifier_callback;
|
||||
|
||||
ret = fb_register_client(&n->notifier);
|
||||
if (ret)
|
||||
dev_err(led->dev, "unable to register backlight trigger\n");
|
||||
}
|
||||
|
||||
static void bl_trig_deactivate(struct led_classdev *led)
|
||||
{
|
||||
struct bl_trig_notifier *n =
|
||||
(struct bl_trig_notifier *) led->trigger_data;
|
||||
|
||||
if (n) {
|
||||
fb_unregister_client(&n->notifier);
|
||||
kfree(n);
|
||||
}
|
||||
}
|
||||
|
||||
static struct led_trigger bl_led_trigger = {
|
||||
.name = "backlight",
|
||||
.activate = bl_trig_activate,
|
||||
.deactivate = bl_trig_deactivate
|
||||
};
|
||||
|
||||
static int __init bl_trig_init(void)
|
||||
{
|
||||
return led_trigger_register(&bl_led_trigger);
|
||||
}
|
||||
|
||||
static void __exit bl_trig_exit(void)
|
||||
{
|
||||
led_trigger_unregister(&bl_led_trigger);
|
||||
}
|
||||
|
||||
module_init(bl_trig_init);
|
||||
module_exit(bl_trig_exit);
|
||||
|
||||
MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
|
||||
MODULE_DESCRIPTION("Backlight emulation LED trigger");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
|
@ -70,9 +70,7 @@ static ssize_t led_delay_on_show(struct device *dev,
|
|||
struct led_classdev *led_cdev = dev_get_drvdata(dev);
|
||||
struct timer_trig_data *timer_data = led_cdev->trigger_data;
|
||||
|
||||
sprintf(buf, "%lu\n", timer_data->delay_on);
|
||||
|
||||
return strlen(buf) + 1;
|
||||
return sprintf(buf, "%lu\n", timer_data->delay_on);
|
||||
}
|
||||
|
||||
static ssize_t led_delay_on_store(struct device *dev,
|
||||
|
|
@ -116,9 +114,7 @@ static ssize_t led_delay_off_show(struct device *dev,
|
|||
struct led_classdev *led_cdev = dev_get_drvdata(dev);
|
||||
struct timer_trig_data *timer_data = led_cdev->trigger_data;
|
||||
|
||||
sprintf(buf, "%lu\n", timer_data->delay_off);
|
||||
|
||||
return strlen(buf) + 1;
|
||||
return sprintf(buf, "%lu\n", timer_data->delay_off);
|
||||
}
|
||||
|
||||
static ssize_t led_delay_off_store(struct device *dev,
|
||||
|
|
|
|||
|
|
@ -123,7 +123,7 @@ extern void ledtrig_ide_activity(void);
|
|||
*/
|
||||
struct led_info {
|
||||
const char *name;
|
||||
char *default_trigger;
|
||||
const char *default_trigger;
|
||||
int flags;
|
||||
};
|
||||
|
||||
|
|
@ -135,7 +135,7 @@ struct led_platform_data {
|
|||
/* For the leds-gpio driver */
|
||||
struct gpio_led {
|
||||
const char *name;
|
||||
char *default_trigger;
|
||||
const char *default_trigger;
|
||||
unsigned gpio;
|
||||
u8 active_low;
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue