make morse LED trigger available as a package, and fix it to compile with 2.6.23
[openwrt/svn-archive/archive.git] / target / linux / generic-2.6 / files / drivers / leds / ledtrig-morse.c
index 13998ea..cb47480 100644 (file)
  *
  */
 
+#include <linux/kernel.h>
+#include <linux/version.h>
 #include <linux/module.h>
 #include <linux/jiffies.h>
-#include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
@@ -88,7 +89,7 @@ static inline unsigned long space_len(struct morse_trig_data *morse_data)
 
 static void morse_timer_function(unsigned long data)
 {
-       struct led_classdev *led_cdev = (struct led_classdev *) data;
+       struct led_classdev *led_cdev = (struct led_classdev *)data;
        struct morse_trig_data *morse_data = led_cdev->trigger_data;
        unsigned long brightness = LED_OFF;
        unsigned long delay = 0;
@@ -144,9 +145,8 @@ set_led:
        led_set_brightness(led_cdev, brightness);
 }
 
-static ssize_t morse_delay_show(struct class_device *dev, char *buf)
+static ssize_t _morse_delay_show(struct led_classdev *led_cdev, char *buf)
 {
-       struct led_classdev *led_cdev = class_get_devdata(dev);
        struct morse_trig_data *morse_data = led_cdev->trigger_data;
 
        sprintf(buf, "%lu\n", morse_data->delay);
@@ -154,10 +154,9 @@ static ssize_t morse_delay_show(struct class_device *dev, char *buf)
        return strlen(buf) + 1;
 }
 
-static ssize_t morse_delay_store(struct class_device *dev, const char *buf,
-               size_t size)
+static ssize_t _morse_delay_store(struct led_classdev *led_cdev,
+               const char *buf, size_t size)
 {
-       struct led_classdev *led_cdev = class_get_devdata(dev);
        struct morse_trig_data *morse_data = led_cdev->trigger_data;
        char *after;
        unsigned long state = simple_strtoul(buf, &after, 10);
@@ -176,9 +175,8 @@ static ssize_t morse_delay_store(struct class_device *dev, const char *buf,
        return ret;
 }
 
-static ssize_t morse_msg_show(struct class_device *dev, char *buf)
+static ssize_t _morse_msg_show(struct led_classdev *led_cdev, char *buf)
 {
-       struct led_classdev *led_cdev = class_get_devdata(dev);
        struct morse_trig_data *morse_data = led_cdev->trigger_data;
 
        if (!morse_data->msg)
@@ -189,10 +187,9 @@ static ssize_t morse_msg_show(struct class_device *dev, char *buf)
        return strlen(buf) + 1;
 }
 
-static ssize_t morse_msg_store(struct class_device *dev, const char *buf,
-                               size_t size)
+static ssize_t _morse_msg_store(struct led_classdev *led_cdev,
+               const char *buf, size_t size)
 {
-       struct led_classdev *led_cdev = class_get_devdata(dev);
        struct morse_trig_data *morse_data = led_cdev->trigger_data;
        char *m;
 
@@ -215,9 +212,88 @@ static ssize_t morse_msg_store(struct class_device *dev, const char *buf,
        return size;
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
+static ssize_t morse_delay_show(struct device *dev,
+               struct device_attribute *attr, char *buf)
+{
+       struct led_classdev *led_cdev = dev_get_drvdata(dev);
+
+       return _morse_delay_show(led_cdev, buf);
+}
+
+static ssize_t morse_delay_store(struct device *dev,
+               struct device_attribute *attr, const char *buf, size_t size)
+{
+       struct led_classdev *led_cdev = dev_get_drvdata(dev);
+
+       return _morse_delay_store(led_cdev, buf, size);
+}
+
+static ssize_t morse_msg_show(struct device *dev,
+               struct device_attribute *attr, char *buf)
+{
+       struct led_classdev *led_cdev = dev_get_drvdata(dev);
+
+       return _morse_msg_show(led_cdev, buf);
+}
+
+static ssize_t morse_msg_store(struct device *dev,
+               struct device_attribute *attr, const char *buf, size_t size)
+{
+       struct led_classdev *led_cdev = dev_get_drvdata(dev);
+
+       return _morse_msg_store(led_cdev, buf, size);
+}
+
+static DEVICE_ATTR(delay, 0644, morse_delay_show, morse_delay_store);
+static DEVICE_ATTR(message, 0644, morse_msg_show, morse_msg_store);
+
+#define led_device_create_file(leddev, attr) \
+       device_create_file(leddev->dev, &dev_attr_ ## attr)
+#define led_device_remove_file(leddev, attr) \
+       device_remove_file(leddev->dev, &dev_attr_ ## attr)
+
+#else
+static ssize_t morse_delay_show(struct class_device *dev, char *buf)
+{
+       struct led_classdev *led_cdev = class_get_devdata(dev);
+
+       return _morse_delay_show(led_cdev, buf);
+}
+
+static ssize_t morse_delay_store(struct class_device *dev, const char *buf,
+               size_t size)
+{
+       struct led_classdev *led_cdev = class_get_devdata(dev);
+
+       return _morse_delay_store(led_cdev, buf, size);
+}
+
+static ssize_t morse_msg_show(struct class_device *dev, char *buf)
+{
+       struct led_classdev *led_cdev = class_get_devdata(dev);
+
+       return _morse_msg_show(led_cdev, buf);
+}
+
+static ssize_t morse_msg_store(struct class_device *dev, const char *buf,
+                               size_t size)
+{
+       struct led_classdev *led_cdev = class_get_devdata(dev);
+
+       return _morse_msg_store(led_cdev, buf, size);
+}
+
 static CLASS_DEVICE_ATTR(delay, 0644, morse_delay_show, morse_delay_store);
 static CLASS_DEVICE_ATTR(message, 0644, morse_msg_show, morse_msg_store);
 
+#define led_device_create_file(leddev, attr) \
+       class_device_create_file(leddev->class_dev, &class_device_attr_ ## attr)
+#define led_device_remove_file(leddev, attr) \
+       class_device_remove_file(leddev->class_dev, &class_device_attr_ ## attr)
+
+#endif
+
 static void morse_trig_activate(struct led_classdev *led_cdev)
 {
        struct morse_trig_data *morse_data;
@@ -232,12 +308,10 @@ static void morse_trig_activate(struct led_classdev *led_cdev)
        morse_data->timer.function = morse_timer_function;
        morse_data->timer.data = (unsigned long)led_cdev;
 
-       rc = class_device_create_file(led_cdev->class_dev,
-                               &class_device_attr_delay);
+       rc = led_device_create_file(led_cdev, delay);
        if (rc) goto err;
 
-       rc = class_device_create_file(led_cdev->class_dev,
-                               &class_device_attr_message);
+       rc = led_device_create_file(led_cdev, message);
        if (rc) goto err_delay;
 
        led_cdev->trigger_data = morse_data;
@@ -245,8 +319,7 @@ static void morse_trig_activate(struct led_classdev *led_cdev)
        return;
 
 err_delay:
-       class_device_remove_file(led_cdev->class_dev,
-                               &class_device_attr_delay);
+       led_device_remove_file(led_cdev, delay);
 err:
        kfree(morse_data);
 }
@@ -258,10 +331,8 @@ static void morse_trig_deactivate(struct led_classdev *led_cdev)
        if (!morse_data)
                return;
 
-       class_device_remove_file(led_cdev->class_dev,
-               &class_device_attr_message);
-       class_device_remove_file(led_cdev->class_dev,
-               &class_device_attr_delay);
+       led_device_remove_file(led_cdev, message);
+       led_device_remove_file(led_cdev, delay);
 
        del_timer_sync(&morse_data->timer);
        if (morse_data->msg)