diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2012-09-14 09:45:50 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2012-09-27 10:22:42 -0400 |
| commit | bced76f27165ca7733437715185c3a1aa526f7a1 (patch) | |
| tree | b7c782d651723e49f19819a2beeccc827a0fcad5 /drivers/gpu/drm/radeon/radeon_device.c | |
| parent | 6d92f81dcf2d40b8ebb947bba5435642b830f649 (diff) | |
drm/radeon: restore backlight level on resume
Restore the backlight level on resume. Some systems
need to explicitly restore the backlight level on
resume.
Fixes panel resume on my Trinity laptop and may fix the
following bugs:
https://bugs.freedesktop.org/show_bug.cgi?id=43829
https://bugzilla.kernel.org/show_bug.cgi?id=46241
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_device.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_device.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 6fca11c64dcd..64a42647f08a 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1282,6 +1282,13 @@ int radeon_resume_kms(struct drm_device *dev) if (rdev->is_atom_bios) { radeon_atom_encoder_init(rdev); radeon_atom_disp_eng_pll_init(rdev); + /* turn on the BL */ + if (rdev->mode_info.bl_encoder) { + u8 bl_level = radeon_get_backlight_level(rdev, + rdev->mode_info.bl_encoder); + radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder, + bl_level); + } } /* reset hpd state */ radeon_hpd_init(rdev); |