This is a note to let you know that I've just added the patch titled
drm/radeon: fix dpms when driver backlight control is disabled
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-fix-dpms-when-driver-backlight-control-is-disabled.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ae93580ee59c02395c1711d3e6b90546b8137b86 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Tue, 27 Oct 2015 10:56:44 -0400
Subject: drm/radeon: fix dpms when driver backlight control is disabled
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From: Alex Deucher <alexander.deucher@xxxxxxx>
commit ae93580ee59c02395c1711d3e6b90546b8137b86 upstream.
If driver backlight control is disabled, either by driver
parameter or default per-asic setting, revert to the old behavior.
Fixes a regression in commit:
4281f46ef839050d2ef60348f661eb463c21cc2e
Reviewed-by: Michel Dänzer <michel.daenzer@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/atombios_encoders.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -1624,9 +1624,14 @@ radeon_atom_encoder_dpms_avivo(struct dr
} else
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
- struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
+ if (rdev->mode_info.bl_encoder) {
+ struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
- atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
+ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
+ } else {
+ args.ucAction = ATOM_LCD_BLON;
+ atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+ }
}
break;
case DRM_MODE_DPMS_STANDBY:
@@ -1706,8 +1711,13 @@ radeon_atom_encoder_dpms_dig(struct drm_
if (ASIC_IS_DCE4(rdev))
atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0);
}
- if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
- atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
+ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
+ if (rdev->mode_info.bl_encoder)
+ atombios_set_backlight_level(radeon_encoder, dig->backlight_level);
+ else
+ atombios_dig_transmitter_setup(encoder,
+ ATOM_TRANSMITTER_ACTION_LCD_BLON, 0, 0);
+ }
if (ext_encoder)
atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE);
break;
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-4.2/drm-radeon-move-bl-encoder-assignment-into-bl-init.patch
queue-4.2/drm-amdgpu-add-missing-dpm-check-for-kv-dpm-late-init.patch
queue-4.2/drm-radeon-fix-dpms-when-driver-backlight-control-is-disabled.patch
queue-4.2/drm-amdgpu-don-t-try-to-recreate-sysfs-entries-on-resume.patch
queue-4.2/drm-radeon-don-t-try-to-recreate-sysfs-entries-on-resume.patch
queue-4.2/drm-radeon-dpm-don-t-add-pwm-attributes-if-dpm-is-disabled.patch
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