diff options
Diffstat (limited to 'packages/linux/ixp4xx-kernel/2.6.16/leds-class.patch')
| -rw-r--r-- | packages/linux/ixp4xx-kernel/2.6.16/leds-class.patch | 2069 |
1 files changed, 2069 insertions, 0 deletions
diff --git a/packages/linux/ixp4xx-kernel/2.6.16/leds-class.patch b/packages/linux/ixp4xx-kernel/2.6.16/leds-class.patch new file mode 100644 index 0000000000..9fbcae79b9 --- /dev/null +++ b/packages/linux/ixp4xx-kernel/2.6.16/leds-class.patch @@ -0,0 +1,2069 @@ +Add the foundations of a new LEDs subsystem. This patch adds a class +which presents LED devices within sysfs and allows their brightness to +be controlled. + +Signed-off-by: Richard Purdie <rpurdie@rpsys.net> + +Index: linux-2.6.15/drivers/leds/Kconfig +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Kconfig 2006-01-29 16:02:38.000000000 +0000 +@@ -0,0 +1,18 @@ ++ ++menu "LED devices" ++ ++config NEW_LEDS ++ bool "LED Support" ++ help ++ Say Y to enable Linux LED support. This is not related to standard ++ keyboard LEDs which are controlled via the input system. ++ ++config LEDS_CLASS ++ tristate "LED Class Support" ++ depends NEW_LEDS ++ help ++ This option enables the led sysfs class in /sys/class/leds. You'll ++ need this to do anything useful with LEDs. If unsure, say N. ++ ++endmenu ++ +Index: linux-2.6.15/drivers/leds/Makefile +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Makefile 2006-01-29 16:02:38.000000000 +0000 +@@ -0,0 +1,4 @@ ++ ++# LED Core ++obj-$(CONFIG_NEW_LEDS) += led-core.o ++obj-$(CONFIG_LEDS_CLASS) += led-class.o +Index: linux-2.6.15/include/linux/leds.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/include/linux/leds.h 2006-01-29 16:03:21.000000000 +0000 +@@ -0,0 +1,48 @@ ++/* ++ * Driver model for leds and led triggers ++ * ++ * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu> ++ * Copyright (C) 2005 Richard Purdie <rpurdie@openedhand.com> ++ * ++ * 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. ++ * ++ */ ++ ++struct device; ++struct class_device; ++/* ++ * LED Core ++ */ ++ ++enum led_brightness { ++ LED_OFF = 0, ++ LED_HALF = 127, ++ LED_FULL = 255, ++}; ++ ++struct led_classdev { ++ const char *name; ++ int brightness; ++ int flags; ++#define LED_SUSPENDED (1 << 0) ++ ++ /* A function to set the brightness of the led */ ++ void (*brightness_set)(struct led_classdev *led_cdev, enum led_brightness brightness); ++ ++ struct class_device *class_dev; ++ /* LED Device linked list */ ++ struct list_head node; ++ ++ /* Trigger data */ ++ char *default_trigger; ++ ++ /* This protects the data in this structure */ ++ rwlock_t lock; ++}; ++ ++extern int led_classdev_register(struct device *parent, struct led_classdev *led_cdev); ++extern void led_classdev_unregister(struct led_classdev *led_cdev); ++extern void led_classdev_suspend(struct led_classdev *led_cdev); ++extern void led_classdev_resume(struct led_classdev *led_cdev); +Index: linux-2.6.15/arch/arm/Kconfig +=================================================================== +--- linux-2.6.15.orig/arch/arm/Kconfig 2006-01-29 14:37:31.000000000 +0000 ++++ linux-2.6.15/arch/arm/Kconfig 2006-01-29 16:02:15.000000000 +0000 +@@ -774,6 +774,8 @@ + + source "drivers/mfd/Kconfig" + ++source "drivers/leds/Kconfig" ++ + source "drivers/media/Kconfig" + + source "drivers/video/Kconfig" +Index: linux-2.6.15/drivers/Makefile +=================================================================== +--- linux-2.6.15.orig/drivers/Makefile 2006-01-29 14:42:52.000000000 +0000 ++++ linux-2.6.15/drivers/Makefile 2006-01-29 14:43:11.000000000 +0000 +@@ -68,6 +68,7 @@ + obj-$(CONFIG_EISA) += eisa/ + obj-$(CONFIG_CPU_FREQ) += cpufreq/ + obj-$(CONFIG_MMC) += mmc/ ++obj-$(CONFIG_NEW_LEDS) += leds/ + obj-$(CONFIG_INFINIBAND) += infiniband/ + obj-$(CONFIG_SGI_IOC4) += sn/ + obj-y += firmware/ +Index: linux-2.6.15/drivers/Kconfig +=================================================================== +--- linux-2.6.15.orig/drivers/Kconfig 2006-01-29 14:42:51.000000000 +0000 ++++ linux-2.6.15/drivers/Kconfig 2006-01-29 14:43:11.000000000 +0000 +@@ -64,6 +64,8 @@ + + source "drivers/mmc/Kconfig" + ++source "drivers/leds/Kconfig" ++ + source "drivers/infiniband/Kconfig" + + source "drivers/sn/Kconfig" +Index: linux-2.6.15/drivers/leds/leds.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/leds/leds.h 2006-01-29 16:02:38.000000000 +0000 +@@ -0,0 +1,26 @@ ++/* ++ * LED Core ++ * ++ * Copyright 2005 Openedhand Ltd. ++ * ++ * Author: Richard Purdie <rpurdie@openedhand.com> ++ * ++ * 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. ++ * ++ */ ++ ++/* led_cdev->lock must be held as write */ ++static inline void led_set_brightness(struct led_classdev *led_cdev, enum led_brightness value) ++{ ++ if (value > LED_FULL) ++ value = LED_FULL; ++ led_cdev->brightness = value; ++ if (!(led_cdev->flags & LED_SUSPENDED)) ++ led_cdev->brightness_set(led_cdev, value); ++} ++ ++extern rwlock_t leds_list_lock; ++extern struct list_head leds_list; ++ +Index: linux-2.6.15/drivers/leds/led-class.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/leds/led-class.c 2006-01-29 16:02:38.000000000 +0000 +@@ -0,0 +1,150 @@ ++/* ++ * LED Class Core ++ * ++ * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu> ++ * Copyright (C) 2005-2006 Richard Purdie <rpurdie@openedhand.com> ++ * ++ * 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/config.h> ++#include <linux/module.h> ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/list.h> ++#include <linux/spinlock.h> ++#include <linux/device.h> ++#include <linux/sysdev.h> ++#include <linux/timer.h> ++#include <linux/err.h> ++#include <linux/leds.h> ++#include "leds.h" ++ ++static struct class *leds_class; ++ ++static ssize_t led_brightness_show(struct class_device *dev, char *buf) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ ssize_t ret = 0; ++ ++ /* no lock needed for this */ ++ sprintf(buf, "%u\n", led_cdev->brightness); ++ ret = strlen(buf) + 1; ++ ++ return ret; ++} ++ ++static ssize_t led_brightness_store(struct class_device *dev, const char *buf, size_t size) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ ssize_t ret = -EINVAL; ++ char *after; ++ ++ unsigned long state = simple_strtoul(buf, &after, 10); ++ if (after - buf > 0) { ++ ret = after - buf; ++ write_lock(&led_cdev->lock); ++ led_set_brightness(led_cdev, state); ++ write_unlock(&led_cdev->lock); ++ } ++ ++ return ret; ++} ++ ++static CLASS_DEVICE_ATTR(brightness, 0644, led_brightness_show, led_brightness_store); ++ ++ ++/** ++ * led_classdev_suspend - suspend an led_classdev. ++ * @led_cdev: the led_classdev to suspend. ++ */ ++void led_classdev_suspend(struct led_classdev *led_cdev) ++{ ++ write_lock(&led_cdev->lock); ++ led_cdev->flags |= LED_SUSPENDED; ++ led_cdev->brightness_set(led_cdev, 0); ++ write_unlock(&led_cdev->lock); ++} ++ ++/** ++ * led_classdev_resume - resume an led_classdev. ++ * @led_cdev: the led_classdev to resume. ++ */ ++void led_classdev_resume(struct led_classdev *led_cdev) ++{ ++ write_lock(&led_cdev->lock); ++ led_cdev->flags &= ~LED_SUSPENDED; ++ led_cdev->brightness_set(led_cdev, led_cdev->brightness); ++ write_unlock(&led_cdev->lock); ++} ++ ++/** ++ * led_classdev_register - register a new object of led_classdev class. ++ * @dev: The device to register. ++ * @led_cdev: the led_classdev structure for this device. ++ */ ++int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) ++{ ++ led_cdev->class_dev = class_device_create(leds_class, NULL, 0, parent, "%s", led_cdev->name); ++ if (unlikely(IS_ERR(led_cdev->class_dev))) ++ return PTR_ERR(led_cdev->class_dev); ++ ++ rwlock_init(&led_cdev->lock); ++ led_cdev->class_dev->class_data = led_cdev; ++ ++ /* register the attributes */ ++ class_device_create_file(led_cdev->class_dev, &class_device_attr_brightness); ++ ++ /* add to the list of leds */ ++ write_lock(&leds_list_lock); ++ list_add_tail(&led_cdev->node, &leds_list); ++ write_unlock(&leds_list_lock); ++ ++ printk(KERN_INFO "Registered led device: %s\n", led_cdev->class_dev->class_id); ++ ++ return 0; ++} ++ ++/** ++ * led_classdev_unregister - unregisters a object of led_properties class. ++ * @led_cdev: the led device to unreigister ++ * ++ * Unregisters a previously registered via led_classdev_register object. ++ */ ++void led_classdev_unregister(struct led_classdev *led_cdev) ++{ ++ class_device_remove_file(led_cdev->class_dev, &class_device_attr_brightness); ++ ++ class_device_unregister(led_cdev->class_dev); ++ ++ write_lock(&leds_list_lock); ++ list_del(&led_cdev->node); ++ write_unlock(&leds_list_lock); ++} ++ ++EXPORT_SYMBOL_GPL(led_classdev_suspend); ++EXPORT_SYMBOL_GPL(led_classdev_resume); ++EXPORT_SYMBOL_GPL(led_classdev_register); ++EXPORT_SYMBOL_GPL(led_classdev_unregister); ++ ++static int __init leds_init(void) ++{ ++ leds_class = class_create(THIS_MODULE, "leds"); ++ if (IS_ERR(leds_class)) ++ return PTR_ERR(leds_class); ++ return 0; ++} ++ ++static void __exit leds_exit(void) ++{ ++ class_destroy(leds_class); ++} ++ ++subsys_initcall(leds_init); ++module_exit(leds_exit); ++ ++MODULE_AUTHOR("John Lenz, Richard Purdie"); ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("LED Class Interface"); +Index: linux-2.6.15/drivers/leds/led-core.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/leds/led-core.c 2006-01-29 14:43:11.000000000 +0000 +@@ -0,0 +1,24 @@ ++/* ++ * LED Class Core ++ * ++ * Copyright 2005-2006 Openedhand Ltd. ++ * ++ * Author: Richard Purdie <rpurdie@openedhand.com> ++ * ++ * 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/kernel.h> ++#include <linux/list.h> ++#include <linux/module.h> ++#include <linux/spinlock.h> ++#include <linux/leds.h> ++#include "leds.h" ++ ++rwlock_t leds_list_lock = RW_LOCK_UNLOCKED; ++LIST_HEAD(leds_list); ++ ++EXPORT_SYMBOL_GPL(leds_list); +Add support for LED triggers to the LED subsystem. "Triggers" are events +which change the state of an LED. Two kinds of trigger are available, +simple ones which can be added to exising code with minimum disruption +and complex ones for implementing new or more complex functionality. + +Signed-off-by: Richard Purdie <rpurdie@rpsys.net> + +Index: linux-2.6.15/drivers/leds/Kconfig +=================================================================== +--- linux-2.6.15.orig/drivers/leds/Kconfig 2006-01-29 15:52:16.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Kconfig 2006-01-29 16:02:35.000000000 +0000 +@@ -14,5 +14,13 @@ + This option enables the led sysfs class in /sys/class/leds. You'll + need this to do anything useful with LEDs. If unsure, say N. + ++config LEDS_TRIGGERS ++ bool "LED Trigger support" ++ depends NEW_LEDS ++ help ++ This option enables trigger support for the leds class. ++ These triggers allow kernel events to drive the LEDs and can ++ be configured via sysfs. If unsure, say Y. ++ + endmenu + +Index: linux-2.6.15/drivers/leds/Makefile +=================================================================== +--- linux-2.6.15.orig/drivers/leds/Makefile 2006-01-29 15:52:16.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Makefile 2006-01-29 16:02:35.000000000 +0000 +@@ -2,3 +2,4 @@ + # LED Core + obj-$(CONFIG_NEW_LEDS) += led-core.o + obj-$(CONFIG_LEDS_CLASS) += led-class.o ++obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o +Index: linux-2.6.15/drivers/leds/leds.h +=================================================================== +--- linux-2.6.15.orig/drivers/leds/leds.h 2006-01-29 15:54:46.000000000 +0000 ++++ linux-2.6.15/drivers/leds/leds.h 2006-01-29 15:55:02.000000000 +0000 +@@ -24,3 +24,13 @@ + extern rwlock_t leds_list_lock; + extern struct list_head leds_list; + ++#ifdef CONFIG_LEDS_TRIGGERS ++void led_trigger_set_default(struct led_classdev *led_cdev); ++void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger); ++#else ++#define led_trigger_set_default(x) do {} while(0) ++#define led_trigger_set(x, y) do {} while(0) ++#endif ++ ++ssize_t led_trigger_store(struct class_device *dev, const char *buf, size_t count); ++ssize_t led_trigger_show(struct class_device *dev, char *buf); +Index: linux-2.6.15/include/linux/leds.h +=================================================================== +--- linux-2.6.15.orig/include/linux/leds.h 2006-01-29 15:52:16.000000000 +0000 ++++ linux-2.6.15/include/linux/leds.h 2006-01-29 15:55:02.000000000 +0000 +@@ -38,6 +38,11 @@ + + /* Trigger data */ + char *default_trigger; ++#ifdef CONFIG_LEDS_TRIGGERS ++ struct led_trigger *trigger; ++ struct list_head trig_list; ++ void *trigger_data; ++#endif + + /* This protects the data in this structure */ + rwlock_t lock; +@@ -47,3 +52,47 @@ + extern void led_classdev_unregister(struct led_classdev *led_cdev); + extern void led_classdev_suspend(struct led_classdev *led_cdev); + extern void led_classdev_resume(struct led_classdev *led_cdev); ++ ++ ++/* ++ * LED Triggers ++ */ ++#ifdef CONFIG_LEDS_TRIGGERS ++ ++#define TRIG_NAME_MAX 50 ++ ++struct led_trigger { ++ /* Trigger Properties */ ++ const char *name; ++ void (*activate)(struct led_classdev *led_cdev); ++ void (*deactivate)(struct led_classdev *led_cdev); ++ ++ /* LEDs under control by this trigger (for simple triggers) */ ++ rwlock_t leddev_list_lock; ++ struct list_head led_cdevs; ++ ++ /* Link to next registered trigger */ ++ struct list_head next_trig; ++}; ++ ++/* Registration functions for complex triggers */ ++int led_trigger_register(struct led_trigger *trigger); ++void led_trigger_unregister(struct led_trigger *trigger); ++ ++/* Registration functions for simple triggers */ ++#define INIT_LED_TRIGGER(x) static struct led_trigger *x; ++#define INIT_LED_TRIGGER_GLOBAL(x) struct led_trigger *x; ++void led_trigger_register_simple(const char *name, struct led_trigger **trigger); ++void led_trigger_unregister_simple(struct led_trigger *trigger); ++void led_trigger_event(struct led_trigger *trigger, enum led_brightness event); ++ ++#else ++ ++/* Triggers aren't active - null macros */ ++#define INIT_LED_TRIGGER(x) ++#define INIT_LED_TRIGGER_GLOBAL(x) ++#define led_trigger_register_simple(x, y) do {} while(0) ++#define led_trigger_unregister_simple(x) do {} while(0) ++#define led_trigger_event(x, y) do {} while(0) ++ ++#endif +Index: linux-2.6.15/drivers/leds/led-class.c +=================================================================== +--- linux-2.6.15.orig/drivers/leds/led-class.c 2006-01-29 15:54:02.000000000 +0000 ++++ linux-2.6.15/drivers/leds/led-class.c 2006-01-29 15:55:02.000000000 +0000 +@@ -55,6 +55,9 @@ + + static CLASS_DEVICE_ATTR(brightness, 0644, led_brightness_show, led_brightness_store); + ++#ifdef CONFIG_LEDS_TRIGGERS ++static CLASS_DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store); ++#endif + + /** + * led_classdev_suspend - suspend an led_classdev. +@@ -96,12 +99,17 @@ + + /* register the attributes */ + class_device_create_file(led_cdev->class_dev, &class_device_attr_brightness); ++#ifdef CONFIG_LEDS_TRIGGERS ++ class_device_create_file(led_cdev->class_dev, &class_device_attr_trigger); ++#endif + + /* add to the list of leds */ + write_lock(&leds_list_lock); + list_add_tail(&led_cdev->node, &leds_list); + write_unlock(&leds_list_lock); + ++ led_trigger_set_default(led_cdev); ++ + printk(KERN_INFO "Registered led device: %s\n", led_cdev->class_dev->class_id); + + return 0; +@@ -116,6 +124,12 @@ + void led_classdev_unregister(struct led_classdev *led_cdev) + { + class_device_remove_file(led_cdev->class_dev, &class_device_attr_brightness); ++#ifdef CONFIG_LEDS_TRIGGERS ++ class_device_remove_file(led_cdev->class_dev, &class_device_attr_trigger); ++#endif ++ ++ if (led_cdev->trigger) ++ led_trigger_set(led_cdev, NULL); + + class_device_unregister(led_cdev->class_dev); + +Index: linux-2.6.15/drivers/leds/led-triggers.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/leds/led-triggers.c 2006-01-29 15:56:15.000000000 +0000 +@@ -0,0 +1,236 @@ ++/* ++ * LED Triggers Core ++ * ++ * Copyright 2005-2006 Openedhand Ltd. ++ * ++ * Author: Richard Purdie <rpurdie@openedhand.com> ++ * ++ * 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/config.h> ++#include <linux/module.h> ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/list.h> ++#include <linux/spinlock.h> ++#include <linux/device.h> ++#include <linux/sysdev.h> ++#include <linux/timer.h> ++#include <linux/leds.h> ++#include "leds.h" ++ ++static rwlock_t triggers_list_lock = RW_LOCK_UNLOCKED; ++static LIST_HEAD(trigger_list); ++ ++ssize_t led_trigger_store(struct class_device *dev, const char *buf, size_t count) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ char trigger_name[TRIG_NAME_MAX]; ++ struct led_trigger *trig; ++ size_t len; ++ ++ trigger_name[sizeof(trigger_name) - 1] = '\0'; ++ strncpy(trigger_name, buf, sizeof(trigger_name) - 1); ++ len = strlen(trigger_name); ++ ++ if (len && trigger_name[len - 1] == '\n') ++ trigger_name[len - 1] = '\0'; ++ ++ if (!strcmp(trigger_name, "none")) { ++ write_lock(&led_cdev->lock); ++ led_trigger_set(led_cdev, NULL); ++ write_unlock(&led_cdev->lock); ++ return count; ++ } ++ ++ read_lock(&triggers_list_lock); ++ list_for_each_entry(trig, &trigger_list, next_trig) { ++ if (!strcmp(trigger_name, trig->name)) { ++ write_lock(&led_cdev->lock); ++ led_trigger_set(led_cdev, trig); ++ write_unlock(&led_cdev->lock); ++ ++ read_unlock(&triggers_list_lock); ++ return count; ++ } ++ } ++ read_unlock(&triggers_list_lock); ++ ++ return -EINVAL; ++} ++ ++ ++ssize_t led_trigger_show(struct class_device *dev, char *buf) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ struct led_trigger *trig; ++ int len = 0; ++ ++ read_lock(&led_cdev->lock); ++ ++ if (!led_cdev->trigger) ++ len += sprintf(buf+len, "[none] "); ++ else ++ len += sprintf(buf+len, "none "); ++ ++ read_lock(&triggers_list_lock); ++ list_for_each_entry(trig, &trigger_list, next_trig) { ++ if (led_cdev->trigger && !strcmp(led_cdev->trigger->name, trig->name)) ++ len += sprintf(buf+len, "[%s] ", trig->name); ++ else ++ len += sprintf(buf+len, "%s ", trig->name); ++ } ++ read_unlock(&triggers_list_lock); ++ read_unlock(&led_cdev->lock); ++ ++ len += sprintf(len+buf, "\n"); ++ return len; ++} ++ ++void led_trigger_event(struct led_trigger *trigger, enum led_brightness brightness) ++{ ++ struct list_head *entry; ++ ++ if (!trigger) ++ return; ++ ++ read_lock(&trigger->leddev_list_lock); ++ list_for_each(entry, &trigger->led_cdevs) { ++ struct led_classdev *led_cdev; ++ ++ led_cdev = list_entry(entry, struct led_classdev, trig_list); ++ write_lock(&led_cdev->lock); ++ led_set_brightness(led_cdev, brightness); ++ write_unlock(&led_cdev->lock); ++ } ++ read_unlock(&trigger->leddev_list_lock); ++} ++ ++/* Caller must ensure led_cdev->lock held for write */ ++void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger) ++{ ++ /* Remove any existing trigger */ ++ if (led_cdev->trigger) { ++ write_lock(&led_cdev->trigger->leddev_list_lock); ++ list_del(&led_cdev->trig_list); ++ write_unlock(&led_cdev->trigger->leddev_list_lock); ++ if (led_cdev->trigger->deactivate) ++ led_cdev->trigger->deactivate(led_cdev); ++ ++ } ++ if (trigger) { ++ write_lock(&trigger->leddev_list_lock); ++ list_add_tail(&led_cdev->trig_list, &trigger->led_cdevs); ++ write_unlock(&trigger->leddev_list_lock); ++ if (trigger->activate) ++ trigger->activate(led_cdev); ++ } ++ led_cdev->trigger = trigger; ++} ++ ++void led_trigger_set_default(struct led_classdev *led_cdev) ++{ ++ struct led_trigger *trig; ++ ++ if (!led_cdev->default_trigger) ++ return; ++ ++ write_lock(&led_cdev->lock); ++ read_lock(&triggers_list_lock); ++ list_for_each_entry(trig, &trigger_list, next_trig) { ++ if (!strcmp(led_cdev->default_trigger, trig->name)) ++ led_trigger_set(led_cdev, trig); ++ } ++ read_unlock(&triggers_list_lock); ++ write_unlock(&led_cdev->lock); ++} ++ ++int led_trigger_register(struct led_trigger *trigger) ++{ ++ struct led_classdev *led_cdev; ++ ++ rwlock_init(&trigger->leddev_list_lock); ++ INIT_LIST_HEAD(&trigger->led_cdevs); ++ ++ /* Add to the list of led triggers */ ++ write_lock(&triggers_list_lock); ++ list_add_tail(&trigger->next_trig, &trigger_list); ++ write_unlock(&triggers_list_lock); ++ ++ /* Register with any LEDs that have this as a default trigger */ ++ read_lock(&leds_list); ++ list_for_each_entry(led_cdev, &leds_list, node) { ++ write_lock(&led_cdev->lock); ++ if (!led_cdev->trigger && led_cdev->default_trigger && ++ !strcmp(led_cdev->default_trigger, trigger->name)) ++ led_trigger_set(led_cdev, trigger); ++ write_unlock(&led_cdev->lock); ++ } ++ read_unlock(&leds_list); ++ ++ return 0; ++} ++ ++void led_trigger_register_simple(const char *name, struct led_trigger **tp) ++{ ++ struct led_trigger *trigger; ++ ++ trigger = kzalloc(sizeof(struct led_trigger), GFP_KERNEL); ++ ++ if (trigger) { ++ trigger->name = name; ++ led_trigger_register(trigger); ++ } ++ *tp = trigger; ++} ++ ++ ++void led_trigger_unregister(struct led_trigger *trigger) ++{ ++ struct led_classdev *led_cdev; ++ ++ /* Remove from the list of led triggers */ ++ write_lock(&triggers_list_lock); ++ list_del(&trigger->next_trig); ++ write_unlock(&triggers_list_lock); ++ ++ /* Remove anyone actively using this trigger */ ++ read_lock(&leds_list); ++ list_for_each_entry(led_cdev, &leds_list, node) { ++ write_lock(&led_cdev->lock); ++ if (led_cdev->trigger == trigger) ++ led_trigger_set(led_cdev, NULL); ++ write_unlock(&led_cdev->lock); ++ } ++ read_unlock(&leds_list); ++} ++ ++void led_trigger_unregister_simple(struct led_trigger *trigger) ++{ ++ led_trigger_unregister(trigger); ++ kfree(trigger); ++} ++ ++/* Used by LED Class */ ++EXPORT_SYMBOL_GPL(led_trigger_set); ++EXPORT_SYMBOL_GPL(led_trigger_set_default); ++EXPORT_SYMBOL_GPL(led_trigger_show); ++EXPORT_SYMBOL_GPL(led_trigger_store); ++ ++/* LED Trigger Interface */ ++EXPORT_SYMBOL_GPL(led_trigger_register); ++EXPORT_SYMBOL_GPL(led_trigger_unregister); ++ ++/* Simple LED Tigger Interface */ ++EXPORT_SYMBOL_GPL(led_trigger_register_simple); ++EXPORT_SYMBOL_GPL(led_trigger_unregister_simple); ++EXPORT_SYMBOL_GPL(led_trigger_event); ++ ++MODULE_AUTHOR("Richard Purdie"); ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("LED Triggers Core"); ++ +Add an example of a complex LED trigger in the form of a generic timer +which triggers the LED its attached to at a user specified frequency +and duty cycle. + +Signed-off-by: Richard Purdie <rpurdie@rpsys.net> + +Index: linux-2.6.15/drivers/leds/Kconfig +=================================================================== +--- linux-2.6.15.orig/drivers/leds/Kconfig 2006-01-29 16:13:48.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Kconfig 2006-01-29 20:32:16.000000000 +0000 +@@ -22,5 +22,12 @@ + These triggers allow kernel events to drive the LEDs and can + be configured via sysfs. If unsure, say Y. + ++config LEDS_TRIGGER_TIMER ++ tristate "LED Timer Trigger" ++ depends LEDS_TRIGGERS ++ help ++ This allows LEDs to be controlled by a programmable timer ++ via sysfs. If unsure, say Y. ++ + endmenu + +Index: linux-2.6.15/drivers/leds/Makefile +=================================================================== +--- linux-2.6.15.orig/drivers/leds/Makefile 2006-01-29 16:13:48.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Makefile 2006-01-29 20:32:16.000000000 +0000 +@@ -3,3 +3,6 @@ + obj-$(CONFIG_NEW_LEDS) += led-core.o + obj-$(CONFIG_LEDS_CLASS) += led-class.o + obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o ++ ++# LED Triggers ++obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o +Index: linux-2.6.15/drivers/leds/ledtrig-timer.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/drivers/leds/ledtrig-timer.c 2006-01-29 17:40:11.000000000 +0000 +@@ -0,0 +1,205 @@ ++/* ++ * LED Kernel Timer Trigger ++ * ++ * Copyright 2005-2006 Openedhand Ltd. ++ * ++ * Author: Richard Purdie <rpurdie@openedhand.com> ++ * ++ * 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/config.h> ++#include <linux/module.h> ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/list.h> ++#include <linux/spinlock.h> ++#include <linux/device.h> ++#include <linux/sysdev.h> ++#include <linux/timer.h> ++#include <linux/leds.h> ++#include "leds.h" ++ ++struct timer_trig_data { ++ unsigned long duty; /* duty cycle, as a percentage */ ++ unsigned long frequency; /* frequency of blinking, in Hz */ ++ unsigned long delay_on; /* milliseconds on */ ++ unsigned long delay_off; /* milliseconds off */ ++ struct timer_list timer; ++}; ++ ++static void led_timer_function(unsigned long data) ++{ ++ struct led_classdev *led_cdev = (struct led_classdev *) data; ++ struct timer_trig_data *timer_data = led_cdev->trigger_data; ++ unsigned long brightness = LED_OFF; ++ unsigned long delay = timer_data->delay_off; ++ ++ write_lock(&led_cdev->lock); ++ ++ if (!timer_data->frequency) { ++ led_set_brightness(led_cdev, LED_OFF); ++ write_unlock(&led_cdev->lock); ++ return; ++ } ++ ++ if (!led_cdev->brightness) { ++ brightness = LED_FULL; ++ delay = timer_data->delay_on; ++ } ++ ++ led_set_brightness(led_cdev, brightness); ++ ++ mod_timer(&timer_data->timer, jiffies + msecs_to_jiffies(delay)); ++ write_unlock(&led_cdev->lock); ++} ++ ++/* led_cdev write lock needs to be held */ ++static int led_timer_setdata(struct led_classdev *led_cdev, unsigned long duty, unsigned long frequency) ++{ ++ struct timer_trig_data *timer_data = led_cdev->trigger_data; ++ ++ if (frequency > 500) ++ return -EINVAL; ++ ++ if (duty > 100) ++ return -EINVAL; ++ ++ timer_data->duty = duty; ++ timer_data->frequency = frequency; ++ if (frequency != 0) { ++ timer_data->delay_on = duty * 1000 / 50 / frequency / 2; ++ timer_data->delay_off = (100 - duty) * 1000 / 50 / frequency / 2; ++ } ++ ++ mod_timer(&timer_data->timer, jiffies + 1); ++ ++ return 0; ++} ++ ++static ssize_t led_duty_show(struct class_device *dev, char *buf) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ struct timer_trig_data *timer_data; ++ ++ read_lock(&led_cdev->lock); ++ timer_data = led_cdev->trigger_data; ++ sprintf(buf, "%lu\n", timer_data->duty); ++ read_unlock(&led_cdev->lock); ++ ++ return strlen(buf) + 1; ++} ++ ++static ssize_t led_duty_store(struct class_device *dev, const char *buf, size_t size) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ struct timer_trig_data *timer_data; ++ int ret = -EINVAL; ++ char *after; ++ ++ unsigned long state = simple_strtoul(buf, &after, 10); ++ if (after - buf > 0) { ++ write_lock(&led_cdev->lock); ++ timer_data = led_cdev->trigger_data; ++ ret = led_timer_setdata(led_cdev, state, timer_data->frequency); ++ if (!ret) ++ ret = after - buf; ++ write_unlock(&led_cdev->lock); ++ } ++ ++ return ret; ++} ++ ++ ++static ssize_t led_frequency_show(struct class_device *dev, char *buf) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ struct timer_trig_data *timer_data; ++ ++ read_lock(&led_cdev->lock); ++ timer_data = led_cdev->trigger_data; ++ sprintf(buf, "%lu\n", timer_data->frequency); ++ read_unlock(&led_cdev->lock); ++ ++ return strlen(buf) + 1; ++} ++ ++static ssize_t led_frequency_store(struct class_device *dev, const char *buf, size_t size) ++{ ++ struct led_classdev *led_cdev = dev->class_data; ++ struct timer_trig_data *timer_data; ++ int ret = -EINVAL; ++ char *after; ++ ++ unsigned long state = simple_strtoul(buf, &after, 10); ++ if (after - buf > 0) { ++ write_lock(&led_cdev->lock); ++ timer_data = led_cdev->trigger_data; ++ ret = led_timer_setdata(led_cdev, timer_data->duty, state); ++ if (!ret) ++ ret = after - buf; ++ write_unlock(&led_cdev->lock); ++ } ++ ++ return ret; ++} ++ ++static CLASS_DEVICE_ATTR(duty, 0644, led_duty_show, led_duty_store); ++static CLASS_DEVICE_ATTR(frequency, 0644, led_frequency_show, led_frequency_store); ++ ++static void timer_trig_activate(struct led_classdev *led_cdev) ++{ ++ struct timer_trig_data *timer_data; ++ ++ timer_data = kzalloc(sizeof(struct timer_trig_data), GFP_KERNEL); ++ if (!timer_data) ++ return; ++ ++ led_cdev->trigger_data = timer_data; ++ ++ init_timer(&timer_data->timer); ++ timer_data->timer.function = led_timer_function; ++ timer_data->timer.data = (unsigned long) led_cdev; ++ ++ timer_data->duty = 50; ++ ++ class_device_create_file(led_cdev->class_dev, &class_device_attr_duty); ++ class_device_create_file(led_cdev->class_dev, &class_device_attr_frequency); ++} ++ ++static void timer_trig_deactivate(struct led_classdev *led_cdev) ++{ ++ struct timer_trig_data *timer_data = led_cdev->trigger_data; ++ if (timer_data) { ++ class_device_remove_file(led_cdev->class_dev, &class_device_attr_duty); ++ class_device_remove_file(led_cdev->class_dev, &class_device_attr_frequency); ++ del_timer_sync(&timer_data->timer); ++ kfree(timer_data); ++ } ++} ++ ++static struct led_trigger timer_led_trigger = { ++ .name = "timer", ++ .activate = timer_trig_activate, ++ .deactivate = timer_trig_deactivate, ++}; ++ ++static int __init timer_trig_init(void) ++{ ++ return led_trigger_register(&timer_led_trigger); ++} ++ ++static void __exit timer_trig_exit (void) ++{ ++ led_trigger_unregister(&timer_led_trigger); ++} ++ ++module_init(timer_trig_init); ++module_exit(timer_trig_exit); ++ ++MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>"); ++MODULE_DESCRIPTION("Timer LED trigger"); ++MODULE_LICENSE("GPL"); +Adds LED drivers for LEDs found on the Sharp Zaurus c7x0 (corgi, +shepherd, husky) and cxx00 (akita, spitz, borzoi) models. + +Signed-off-by: Richard Purdie <rpurdie@rpsys.net> + +Index: linux-2.6.15/arch/arm/mach-pxa/corgi.c +=================================================================== +--- linux-2.6.15.orig/arch/arm/mach-pxa/corgi.c 2006-01-29 16:02:30.000000000 +0000 ++++ linux-2.6.15/arch/arm/mach-pxa/corgi.c 2006-01-29 16:11:47.000000000 +0000 +@@ -165,6 +165,15 @@ + + + /* ++ * Corgi LEDs ++ */ ++static struct platform_device corgiled_device = { ++ .name = "corgi-led", ++ .id = -1, ++}; ++ ++ ++/* + * Corgi Touch Screen Device + */ + static struct resource corgits_resources[] = { +@@ -298,6 +307,7 @@ + &corgikbd_device, + &corgibl_device, + &corgits_device, ++ &corgiled_device, + }; + + static void __init corgi_init(void) +Index: linux-2.6.15/arch/arm/mach-pxa/spitz.c +=================================================================== +--- linux-2.6.15.orig/arch/arm/mach-pxa/spitz.c 2006-01-29 16:02:30.000000000 +0000 ++++ linux-2.6.15/arch/arm/mach-pxa/spitz.c 2006-01-29 16:11:48.000000000 +0000 +@@ -243,6 +243,15 @@ + + + /* ++ * Spitz LEDs ++ */ ++static struct platform_device spitzled_device = { ++ .name = "spitz-led", ++ .id = -1, ++}; ++ ++ ++/* + * Spitz Touch Screen Device + */ + static struct resource spitzts_resources[] = { +@@ -419,6 +428,7 @@ + &spitzkbd_device, + &spitzts_device, + &spitzbl_device, ++ &spitzled_device, + }; + + static void __init common_init(void) +Index: linux-2.6.15/drivers/leds/Kconfig +=================================================================== +--- linux-2.6.15.orig/drivers/leds/Kconfig 2006-01-29 16:04:20.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Kconfig 2006-01-29 16:11:54.000000000 +0000 +@@ -22,6 +22,20 @@ + These triggers allow kernel events to drive the LEDs and can + be configured via sysfs. If unsure, say Y. + ++config LEDS_CORGI ++ tristate "LED Support for the Sharp SL-C7x0 series" ++ depends LEDS_CLASS && PXA_SHARP_C7xx ++ help ++ This option enables support for the LEDs on Sharp Zaurus ++ SL-C7x0 series (C700, C750, C760, C860). ++ ++config LEDS_SPITZ ++ tristate "LED Support for the Sharp SL-Cxx00 series" ++ depends LEDS_CLASS && PXA_SHARP_Cxx00 ++ help ++ This option enables support for the LEDs on Sharp Zaurus ++ SL-Cxx00 series (C1000, C3000, C3100). ++ + config LEDS_TRIGGER_TIMER + tristate "LED Timer Trigger" + depends LEDS_TRIGGERS +Index: linux-2.6.15/drivers/leds/Makefile +=================================================================== +--- linux-2.6.15.orig/drivers/leds/Makefile 2006-01-29 16:04:20.000000000 +0000 ++++ linux-2.6.15/drivers/leds/Makefile 2006-01-29 16:11:54.000000000 +0000 +@@ -4,5 +4,9 @@ + obj-$(CONFIG_LEDS_CLASS) += led-class.o + obj-$(CONFIG_LEDS_TRIGGERS) += led-triggers.o + ++# LED Platform Drivers ++obj-$(CONFIG_LEDS_CORGI) += leds-corgi.o ++obj-$(CONFIG_ |