[PATCH] leds: Convert from struct class_device to struct device

From: Richard Purdie
Date: Mon Jul 09 2007 - 07:41:05 EST

Convert the LEDs class from struct class_device to struct device
since class_device is scheduled for removal.

Signed-off-by: Richard Purdie <rpurdie@xxxxxxxxx>

[I've applied this patch to the LEDs for-mm branch for testing but will
work in any feedback]

drivers/leds/led-class.c | 49 +++++++++++++++++++------------------------
drivers/leds/led-triggers.c | 13 ++++++-----
drivers/leds/leds-locomo.c | 2 -
drivers/leds/leds.h | 8 ++++---
drivers/leds/ledtrig-timer.c | 49 ++++++++++++++++++++-----------------------
include/linux/leds.h | 3 --
6 files changed, 59 insertions(+), 65 deletions(-)

diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 3c17112..4211293 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -2,7 +2,7 @@
* LED Class Core
*
* Copyright (C) 2005 John Lenz <lenz@xxxxxxxxxxx>
- * Copyright (C) 2005-2006 Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
+ * Copyright (C) 2005-2007 Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
*
* 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
@@ -24,9 +24,10 @@

static struct class *leds_class;

-static ssize_t led_brightness_show(struct class_device *dev, char *buf)
+static ssize_t led_brightness_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct led_classdev *led_cdev = class_get_devdata(dev);
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
ssize_t ret = 0;

/* no lock needed for this */
@@ -36,10 +37,10 @@ static ssize_t led_brightness_show(struct class_device *dev, char *buf)
return ret;
}

-static ssize_t led_brightness_store(struct class_device *dev,
- const char *buf, size_t size)
+static ssize_t led_brightness_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
{
- struct led_classdev *led_cdev = class_get_devdata(dev);
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
ssize_t ret = -EINVAL;
char *after;
unsigned long state = simple_strtoul(buf, &after, 10);
@@ -56,10 +57,9 @@ static ssize_t led_brightness_store(struct class_device *dev,
return ret;
}

-static CLASS_DEVICE_ATTR(brightness, 0644, led_brightness_show,
- led_brightness_store);
+static 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);
+static DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store);
#endif

/**
@@ -93,16 +93,15 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
{
int rc;

- 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);
+ led_cdev->dev = device_create(leds_class, parent, 0, "%s",
+ led_cdev->name);
+ if (unlikely(IS_ERR(led_cdev->dev)))
+ return PTR_ERR(led_cdev->dev);

- class_set_devdata(led_cdev->class_dev, led_cdev);
+ dev_set_drvdata(led_cdev->dev, led_cdev);

/* register the attributes */
- rc = class_device_create_file(led_cdev->class_dev,
- &class_device_attr_brightness);
+ rc = device_create_file(led_cdev->dev, &dev_attr_brightness);
if (rc)
goto err_out;

@@ -114,8 +113,7 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
#ifdef CONFIG_LEDS_TRIGGERS
rwlock_init(&led_cdev->trigger_lock);

- rc = class_device_create_file(led_cdev->class_dev,
- &class_device_attr_trigger);
+ rc = device_create_file(led_cdev->dev, &dev_attr_trigger);
if (rc)
goto err_out_led_list;

@@ -123,18 +121,17 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
#endif

printk(KERN_INFO "Registered led device: %s\n",
- led_cdev->class_dev->class_id);
+ led_cdev->name);

return 0;

#ifdef CONFIG_LEDS_TRIGGERS
err_out_led_list:
- class_device_remove_file(led_cdev->class_dev,
- &class_device_attr_brightness);
+ device_remove_file(led_cdev->dev, &dev_attr_brightness);
list_del(&led_cdev->node);
#endif
err_out:
- class_device_unregister(led_cdev->class_dev);
+ device_unregister(led_cdev->dev);
return rc;
}
EXPORT_SYMBOL_GPL(led_classdev_register);
@@ -147,18 +144,16 @@ EXPORT_SYMBOL_GPL(led_classdev_register);
*/
void led_classdev_unregister(struct led_classdev *led_cdev)
{
- class_device_remove_file(led_cdev->class_dev,
- &class_device_attr_brightness);
+ device_remove_file(led_cdev->dev, &dev_attr_brightness);
#ifdef CONFIG_LEDS_TRIGGERS
- class_device_remove_file(led_cdev->class_dev,
- &class_device_attr_trigger);
+ device_remove_file(led_cdev->dev, &dev_attr_trigger);
write_lock(&led_cdev->trigger_lock);
if (led_cdev->trigger)
led_trigger_set(led_cdev, NULL);
write_unlock(&led_cdev->trigger_lock);
#endif

- class_device_unregister(led_cdev->class_dev);
+ device_unregister(led_cdev->dev);

write_lock(&leds_list_lock);
list_del(&led_cdev->node);
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index b2438a0..7103d54 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -1,7 +1,7 @@
/*
* LED Triggers Core
*
- * Copyright 2005-2006 Openedhand Ltd.
+ * Copyright 2005-2007 Openedhand Ltd.
*
* Author: Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
*
@@ -28,10 +28,10 @@
static DEFINE_RWLOCK(triggers_list_lock);
static LIST_HEAD(trigger_list);

-ssize_t led_trigger_store(struct class_device *dev, const char *buf,
- size_t count)
+ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
- struct led_classdev *led_cdev = class_get_devdata(dev);
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
char trigger_name[TRIG_NAME_MAX];
struct led_trigger *trig;
size_t len;
@@ -67,9 +67,10 @@ ssize_t led_trigger_store(struct class_device *dev, const char *buf,
}


-ssize_t led_trigger_show(struct class_device *dev, char *buf)
+ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
{
- struct led_classdev *led_cdev = class_get_devdata(dev);
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct led_trigger *trig;
int len = 0;

diff --git a/drivers/leds/leds-locomo.c b/drivers/leds/leds-locomo.c
index 6f2d449..bfac499 100644
--- a/drivers/leds/leds-locomo.c
+++ b/drivers/leds/leds-locomo.c
@@ -19,7 +19,7 @@
static void locomoled_brightness_set(struct led_classdev *led_cdev,
enum led_brightness value, int offset)
{
- struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->class_dev->dev);
+ struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev);
unsigned long flags;

local_irq_save(flags);
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
index a715c4e..53b2c85 100644
--- a/drivers/leds/leds.h
+++ b/drivers/leds/leds.h
@@ -13,6 +13,7 @@
#ifndef __LEDS_H_INCLUDED
#define __LEDS_H_INCLUDED

+#include <linux/device.h>
#include <linux/leds.h>

static inline void led_set_brightness(struct led_classdev *led_cdev,
@@ -37,8 +38,9 @@ void led_trigger_set(struct led_classdev *led_cdev,
#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);
+ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count);
+ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr,
+ char *buf);

#endif /* __LEDS_H_INCLUDED */
diff --git a/drivers/leds/ledtrig-timer.c b/drivers/leds/ledtrig-timer.c
index d756bdb..ed9ff02 100644
--- a/drivers/leds/ledtrig-timer.c
+++ b/drivers/leds/ledtrig-timer.c
@@ -52,9 +52,10 @@ static void led_timer_function(unsigned long data)
mod_timer(&timer_data->timer, jiffies + msecs_to_jiffies(delay));
}

-static ssize_t led_delay_on_show(struct class_device *dev, char *buf)
+static ssize_t led_delay_on_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct led_classdev *led_cdev = class_get_devdata(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);
@@ -62,10 +63,10 @@ static ssize_t led_delay_on_show(struct class_device *dev, char *buf)
return strlen(buf) + 1;
}

-static ssize_t led_delay_on_store(struct class_device *dev, const char *buf,
- size_t size)
+static ssize_t led_delay_on_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
{
- struct led_classdev *led_cdev = class_get_devdata(dev);
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct timer_trig_data *timer_data = led_cdev->trigger_data;
int ret = -EINVAL;
char *after;
@@ -84,9 +85,10 @@ static ssize_t led_delay_on_store(struct class_device *dev, const char *buf,
return ret;
}

-static ssize_t led_delay_off_show(struct class_device *dev, char *buf)
+static ssize_t led_delay_off_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct led_classdev *led_cdev = class_get_devdata(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);
@@ -94,10 +96,10 @@ static ssize_t led_delay_off_show(struct class_device *dev, char *buf)
return strlen(buf) + 1;
}

-static ssize_t led_delay_off_store(struct class_device *dev, const char *buf,
- size_t size)
+static ssize_t led_delay_off_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t size)
{
- struct led_classdev *led_cdev = class_get_devdata(dev);
+ struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct timer_trig_data *timer_data = led_cdev->trigger_data;
int ret = -EINVAL;
char *after;
@@ -116,10 +118,8 @@ static ssize_t led_delay_off_store(struct class_device *dev, const char *buf,
return ret;
}

-static CLASS_DEVICE_ATTR(delay_on, 0644, led_delay_on_show,
- led_delay_on_store);
-static CLASS_DEVICE_ATTR(delay_off, 0644, led_delay_off_show,
- led_delay_off_store);
+static DEVICE_ATTR(delay_on, 0644, led_delay_on_show, led_delay_on_store);
+static DEVICE_ATTR(delay_off, 0644, led_delay_off_show, led_delay_off_store);

static void timer_trig_activate(struct led_classdev *led_cdev)
{
@@ -136,18 +136,17 @@ static void timer_trig_activate(struct led_classdev *led_cdev)
timer_data->timer.function = led_timer_function;
timer_data->timer.data = (unsigned long) led_cdev;

- rc = class_device_create_file(led_cdev->class_dev,
- &class_device_attr_delay_on);
- if (rc) goto err_out;
- rc = class_device_create_file(led_cdev->class_dev,
- &class_device_attr_delay_off);
- if (rc) goto err_out_delayon;
+ rc = device_create_file(led_cdev->dev, &dev_attr_delay_on);
+ if (rc)
+ goto err_out;
+ rc = device_create_file(led_cdev->dev, &dev_attr_delay_off);
+ if (rc)
+ goto err_out_delayon;

return;

err_out_delayon:
- class_device_remove_file(led_cdev->class_dev,
- &class_device_attr_delay_on);
+ device_remove_file(led_cdev->dev, &dev_attr_delay_on);
err_out:
led_cdev->trigger_data = NULL;
kfree(timer_data);
@@ -158,10 +157,8 @@ 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_delay_on);
- class_device_remove_file(led_cdev->class_dev,
- &class_device_attr_delay_off);
+ device_remove_file(led_cdev->dev, &dev_attr_delay_on);
+ device_remove_file(led_cdev->dev, &dev_attr_delay_off);
del_timer_sync(&timer_data->timer);
kfree(timer_data);
}
diff --git a/include/linux/leds.h b/include/linux/leds.h
index 059abfe..dc1178f 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -16,7 +16,6 @@
#include <linux/spinlock.h>

struct device;
-struct class_device;
/*
* LED Core
*/
@@ -38,7 +37,7 @@ struct led_classdev {
void (*brightness_set)(struct led_classdev *led_cdev,
enum led_brightness brightness);

- struct class_device *class_dev;
+ struct device *dev;
struct list_head node; /* LED Device list */
char *default_trigger; /* Trigger to use */


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