fbdev: nvidia: Use backlight helper

Instead of retrieving the backlight brightness in struct
backlight_properties manually, and then checking whether the backlight
should be on at all, use backlight_get_brightness() which does all
this and insulates this from future changes.

Signed-off-by: Stephen Kitt <steve@sk2.org>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/drivers/video/fbdev/nvidia/nv_backlight.c b/drivers/video/fbdev/nvidia/nv_backlight.c
index 2ce5352..503a7a6 100644 (file)
--- a/drivers/video/fbdev/nvidia/nv_backlight.c
+++ b/drivers/video/fbdev/nvidia/nv_backlight.c
@@ -49,17 +49,11 @@ static int nvidia_bl_update_status(struct backlight_device *bd)
 {
        struct nvidia_par *par = bl_get_data(bd);
        u32 tmp_pcrt, tmp_pmc, fpcontrol;
-       int level;
+       int level = backlight_get_brightness(bd);
 
        if (!par->FlatPanel)
                return 0;
 
-       if (bd->props.power != FB_BLANK_UNBLANK ||
-           bd->props.fb_blank != FB_BLANK_UNBLANK)
-               level = 0;
-       else
-               level = bd->props.brightness;
-
        tmp_pmc = NV_RD32(par->PMC, 0x10F0) & 0x0000FFFF;
        tmp_pcrt = NV_RD32(par->PCRTC0, 0x081C) & 0xFFFFFFFC;
        fpcontrol = NV_RD32(par->PRAMDAC, 0x0848) & 0xCFFFFFCC;