macintosh/via-pmu-backlight: Use backlight helper

backlight_properties.fb_blank is deprecated. The states it represents
are handled by other properties; but instead of accessing those
properties directly, drivers should use the helpers provided by
backlight.h.

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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220616170425.1346081-1-steve@sk2.org

diff --git a/drivers/macintosh/via-pmu-backlight.c b/drivers/macintosh/via-pmu-backlight.c
index 2194016..c2d87e7 100644 (file)
--- a/drivers/macintosh/via-pmu-backlight.c
+++ b/drivers/macintosh/via-pmu-backlight.c
@@ -71,12 +71,7 @@ static int pmu_backlight_get_level_brightness(int level)
 static int __pmu_backlight_update_status(struct backlight_device *bd)
 {
        struct adb_request req;
-       int level = bd->props.brightness;
-
-
-       if (bd->props.power != FB_BLANK_UNBLANK ||
-           bd->props.fb_blank != FB_BLANK_UNBLANK)
-               level = 0;
+       int level = backlight_get_brightness(bd);
 
        if (level > 0) {
                int pmulevel = pmu_backlight_get_level_brightness(level);