From: Alex Deucher Date: Thu, 11 Mar 2010 15:38:07 +0000 (-0500) Subject: drm/radeon/kms/rs4xx: make sure crtcs are enabled when setting timing X-Git-Tag: firefly_0821_release~9833^2~2198^2~83^2~9 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d805f50aa1d9eef63fec356b2be557e2da3cd643;p=firefly-linux-kernel-4.4.55.git drm/radeon/kms/rs4xx: make sure crtcs are enabled when setting timing based on ddx patch from Matthias Hopf. Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c index df23d6a01d02..88865e38fe30 100644 --- a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c +++ b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c @@ -603,6 +603,10 @@ static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mod ? RADEON_CRTC2_INTERLACE_EN : 0)); + /* rs4xx chips seem to like to have the crtc enabled when the timing is set */ + if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480)) + crtc2_gen_cntl |= RADEON_CRTC2_EN; + disp2_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL); disp2_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN; @@ -630,6 +634,10 @@ static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mod ? RADEON_CRTC_INTERLACE_EN : 0)); + /* rs4xx chips seem to like to have the crtc enabled when the timing is set */ + if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480)) + crtc_gen_cntl |= RADEON_CRTC_EN; + crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL); crtc_ext_cntl |= (RADEON_XCRT_CNT_EN | RADEON_CRTC_VSYNC_DIS |