diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_legacy_encoders.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c index ec00deaab9ca..8ad9c5f16014 100644 --- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c @@ -290,6 +290,19 @@ static uint8_t radeon_legacy_lvds_level(struct backlight_device *bd) return level; } +u8 +radeon_legacy_get_backlight_level(struct radeon_encoder *radeon_encoder) +{ + struct drm_device *dev = radeon_encoder->base.dev; + struct radeon_device *rdev = dev->dev_private; + u8 backlight_level; + + backlight_level = (RREG32(RADEON_LVDS_GEN_CNTL) >> + RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff; + + return backlight_level; +} + void radeon_legacy_set_backlight_level(struct radeon_encoder *radeon_encoder, u8 level) { |