On Mon, Sep 28, 2015 at 5:16 AM, Michel Dänzer michel@daenzer.net wrote:
From: Michel Dänzer michel.daenzer@amd.com
Instead of only enabling the backlight (which seems to set it to max brightness), just re-set the current backlight level, which also takes care of enabling the backlight if necessary.
Only the radeon_atom_encoder_dpms_dig part tested on a Kaveri laptop, the radeon_atom_encoder_dpms_avivo part is only compile tested.
Cc: stable@vger.kernel.org Signed-off-by: Michel Dänzer michel.daenzer@amd.com
Applied and committed a similar fix for amdgpu.
Thanks!
Alex
drivers/gpu/drm/radeon/atombios_encoders.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c index c387259..65adb9c 100644 --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -1624,8 +1624,9 @@ radeon_atom_encoder_dpms_avivo(struct drm_encoder *encoder, int mode) } else atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
args.ucAction = ATOM_LCD_BLON;atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;atombios_set_backlight_level(radeon_encoder, dig->backlight_level); } break; case DRM_MODE_DPMS_STANDBY:@@ -1706,8 +1707,7 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode) atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0); } if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
atombios_dig_transmitter_setup(encoder,ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
atombios_set_backlight_level(radeon_encoder, dig->backlight_level); if (ext_encoder) atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE); break;-- 2.5.0
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