diff options
| author | Richard Purdie <rpurdie@rpsys.net> | 2007-02-08 00:33:24 +0000 |
|---|---|---|
| committer | Richard Purdie <rpurdie@rpsys.net> | 2007-02-20 08:38:44 +0000 |
| commit | a8db3c1948eb30cd6988b5b96b654f591e6280b1 (patch) | |
| tree | b1950b1bd1f72a6b67c927cf14e7112fd6628be9 /drivers | |
| parent | da7a747125ff80e13c00b231602e7c86b6bb8741 (diff) | |
backlight: Minor code cleanups for hp680_bl.c
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/backlight/hp680_bl.c | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/drivers/video/backlight/hp680_bl.c b/drivers/video/backlight/hp680_bl.c index 074625a46e3..e7444c8f289 100644 --- a/drivers/video/backlight/hp680_bl.c +++ b/drivers/video/backlight/hp680_bl.c @@ -28,7 +28,6 @@ static int hp680bl_suspended; static int current_intensity = 0; static DEFINE_SPINLOCK(bl_lock); -static struct backlight_device *hp680_backlight_device; 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 -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_send_intensity(hp680_backlight_device); + hp680bl_send_intensity(bd); 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_send_intensity(hp680_backlight_device); + hp680bl_send_intensity(bd); return 0; } #else @@ -101,26 +104,32 @@ static struct backlight_properties hp680bl_data = { .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", - &dev->dev, NULL, &hp680bl_data); - if (IS_ERR (hp680_backlight_device)) - return PTR_ERR (hp680_backlight_device); + struct backlight_device *bd; + + bd = backlight_device_register ("hp680-bl", &pdev->dev, NULL, + &hp680bl_data); + if (IS_ERR(bd)) + return PTR_ERR(bd); - hp680_backlight_device->props->brightness = HP680_DEFAULT_INTENSITY; - hp680bl_send_intensity(hp680_backlight_device); + platform_set_drvdata(pdev, bd); + + bd->props->brightness = HP680_DEFAULT_INTENSITY; + hp680bl_send_intensity(bd); 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.power = 0; - hp680bl_send_intensity(hp680_backlight_device); + hp680bl_send_intensity(bd); - backlight_device_unregister(hp680_backlight_device); + backlight_device_unregister(bd); return 0; } |