AcoSail/kernel_optimize_test
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backlight: Minor code cleanups for hp680_bl.c

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Since people use this code as an example, clean it up to
to use platform_*_drvdata instead of a global variable.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
This commit is contained in:
Richard Purdie 2007-02-08 00:33:24 +00:00
parent da7a747125
commit a8db3c1948
1 changed files with 24 additions and 15 deletions
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39
drivers/video/backlight/hp680_bl.c
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@ -28,7 +28,6 @@
static int hp680bl_suspended; static int hp680bl_suspended;
static int current_intensity = 0; static int current_intensity = 0;
static DEFINE_SPINLOCK(bl_lock); static DEFINE_SPINLOCK(bl_lock);
static struct backlight_device *hp680_backlight_device;
static void hp680bl_send_intensity(struct backlight_device *bd) static void hp680bl_send_intensity(struct backlight_device *bd)
{ {
@ -66,17 +65,21 @@ static void hp680bl_send_intensity(struct backlight_device *bd)
#ifdef CONFIG_PM #ifdef CONFIG_PM
static int hp680bl_suspend(struct platform_device *dev, pm_message_t state) static int hp680bl_suspend(struct platform_device *pdev, pm_message_t state)
{ {
struct backlight_device *bd = platform_get_drvdata(pdev);
hp680bl_suspended = 1; hp680bl_suspended = 1;
hp680bl_send_intensity(hp680_backlight_device); hp680bl_send_intensity(bd);
return 0; return 0;
} }
static int hp680bl_resume(struct platform_device *dev) static int hp680bl_resume(struct platform_device *pdev)
{ {
struct backlight_device *bd = platform_get_drvdata(pdev);
hp680bl_suspended = 0; hp680bl_suspended = 0;
hp680bl_send_intensity(hp680_backlight_device); hp680bl_send_intensity(bd);
return 0; return 0;
} }
#else #else
@ -101,26 +104,32 @@ static struct backlight_properties hp680bl_data = {
.update_status = hp680bl_set_intensity, .update_status = hp680bl_set_intensity,
}; };
static int __init hp680bl_probe(struct platform_device *dev) static int __init hp680bl_probe(struct platform_device *pdev)
{ {
hp680_backlight_device = backlight_device_register ("hp680-bl", struct backlight_device *bd;
&dev->dev, NULL, &hp680bl_data);
if (IS_ERR (hp680_backlight_device))
return PTR_ERR (hp680_backlight_device);
hp680_backlight_device->props->brightness = HP680_DEFAULT_INTENSITY; bd = backlight_device_register ("hp680-bl", &pdev->dev, NULL,
hp680bl_send_intensity(hp680_backlight_device); &hp680bl_data);
if (IS_ERR(bd))
return PTR_ERR(bd);
platform_set_drvdata(pdev, bd);
bd->props->brightness = HP680_DEFAULT_INTENSITY;
hp680bl_send_intensity(bd);
return 0; return 0;
} }
static int hp680bl_remove(struct platform_device *dev) static int hp680bl_remove(struct platform_device *pdev)
{ {
struct backlight_device *bd = platform_get_drvdata(pdev);
hp680bl_data.brightness = 0; hp680bl_data.brightness = 0;
hp680bl_data.power = 0; hp680bl_data.power = 0;
hp680bl_send_intensity(hp680_backlight_device); hp680bl_send_intensity(bd);
backlight_device_unregister(hp680_backlight_device); backlight_device_unregister(bd);
return 0; return 0;
} }