From: Alex Deucher Date: Wed, 21 Aug 2013 18:44:15 +0000 (-0400) Subject: drm/radeon: disable the GRPH block when we disable the crtc X-Git-Tag: firefly_0821_release~176^2~5263^2~27^2~26 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ac4d04d4be51802e7bf6a46a987e47fdc32af6b4;p=firefly-linux-kernel-4.4.55.git 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 --- 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);