diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2013-08-21 14:44:15 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-08-30 16:31:04 -0400 |
| commit | ac4d04d4be51802e7bf6a46a987e47fdc32af6b4 (patch) | |
| tree | 0e27552c1555342cda5d56487d964fa6b7cfc517 | |
| parent | d1e3b5564834ea24dee6b364a172365f64865fe5 (diff) | |
| download | linux-ac4d04d4be51802e7bf6a46a987e47fdc32af6b4.tar.bz2 | |
drm/radeon: disable the GRPH block when we disable the crtc
Since we aren't using it when the crtc is disabled, turn it off
to save power. The GRPH block is the part of the display
controller that controls the primary graphics plane (size,
address, etc.).
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index b9d3b43f19c0..bf87f6d435f8 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -1910,6 +1910,12 @@ static void atombios_crtc_disable(struct drm_crtc *crtc) int i; atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); + /* disable the GRPH */ + if (ASIC_IS_DCE4(rdev)) + WREG32(EVERGREEN_GRPH_ENABLE + radeon_crtc->crtc_offset, 0); + else if (ASIC_IS_AVIVO(rdev)) + WREG32(AVIVO_D1GRPH_ENABLE + radeon_crtc->crtc_offset, 0); + if (ASIC_IS_DCE6(rdev)) atombios_powergate_crtc(crtc, ATOM_ENABLE); |