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Diffstat (limited to 'include/linux/lcd.h')
-rw-r--r--include/linux/lcd.h23
1 files changed, 13 insertions, 10 deletions
diff --git a/include/linux/lcd.h b/include/linux/lcd.h
index 46970af2ca89..598793c0745b 100644
--- a/include/linux/lcd.h
+++ b/include/linux/lcd.h
@@ -14,7 +14,7 @@
/* Notes on locking:
*
- * lcd_device->props_lock is an internal backlight lock protecting the props
+ * lcd_device->ops_lock is an internal backlight lock protecting the ops
* field and no code outside the core should need to touch it.
*
* Access to set_power() is serialised by the update_lock mutex since
@@ -30,15 +30,17 @@
struct lcd_device;
struct fb_info;
-/* This structure defines all the properties of a LCD flat panel. */
struct lcd_properties {
+ /* The maximum value for contrast (read-only) */
+ int max_contrast;
+};
+
+struct lcd_ops {
/* Get the LCD panel power status (0: full on, 1..3: controller
power on, flat panel power off, 4: full off), see FB_BLANK_XXX */
int (*get_power)(struct lcd_device *);
/* Enable or disable power to the LCD (0: on; 4: off, see FB_BLANK_XXX) */
int (*set_power)(struct lcd_device *, int power);
- /* The maximum value for contrast (read-only) */
- int max_contrast;
/* Get the current contrast setting (0-max_contrast) */
int (*get_contrast)(struct lcd_device *);
/* Set LCD panel contrast */
@@ -49,12 +51,13 @@ struct lcd_properties {
};
struct lcd_device {
- /* This protects the 'props' field. If 'props' is NULL, the driver that
+ struct lcd_properties props;
+ /* This protects the 'ops' field. If 'ops' is NULL, the driver that
registered this device has been unloaded, and if class_get_devdata()
points to something in the body of that driver, it is also invalid. */
- struct mutex props_lock;
+ struct mutex ops_lock;
/* If this is NULL, the backing module is unloaded */
- struct lcd_properties *props;
+ struct lcd_ops *ops;
/* Serialise access to set_power method */
struct mutex update_lock;
/* The framebuffer notifier block */
@@ -66,13 +69,13 @@ struct lcd_device {
static inline void lcd_set_power(struct lcd_device *ld, int power)
{
mutex_lock(&ld->update_lock);
- if (ld->props && ld->props->set_power)
- ld->props->set_power(ld, power);
+ if (ld->ops && ld->ops->set_power)
+ ld->ops->set_power(ld, power);
mutex_unlock(&ld->update_lock);
}
extern struct lcd_device *lcd_device_register(const char *name,
- void *devdata, struct lcd_properties *lp);
+ void *devdata, struct lcd_ops *ops);
extern void lcd_device_unregister(struct lcd_device *ld);
#define to_lcd_device(obj) container_of(obj, struct lcd_device, class_dev)