From ee2215f0b269f4c460807e3f827665eb7049aa34 Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Thu, 26 Nov 2009 15:58:36 +0100 Subject: [PATCH] drm/radeon/kms: Don't overwrite crtc_gen_cntl or crtc_gen_cntl2 Don't overwritte crtc_gen_cntl or crtc_gen_cntl2 or we may loose the cursor. This especialy happen when changing video mode. Fix bugs: https://bugzilla.redhat.com/show_bug.cgi?id=529146 Signed-off-by: Jerome Glisse Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_legacy_crtc.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c index 6634769c9ac2..c5c5c022e8c0 100644 --- a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c +++ b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c @@ -647,12 +647,8 @@ static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mod uint32_t crtc2_gen_cntl; uint32_t disp2_merge_cntl; - /* check to see if TV DAC is enabled for another crtc and keep it enabled */ - if (RREG32(RADEON_CRTC2_GEN_CNTL) & RADEON_CRTC2_CRT2_ON) - crtc2_gen_cntl = RADEON_CRTC2_CRT2_ON; - else - crtc2_gen_cntl = 0; - + /* if TV DAC is enabled for another crtc and keep it enabled */ + crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL) & 0x00718080; crtc2_gen_cntl |= ((format << 8) | RADEON_CRTC2_VSYNC_DIS | RADEON_CRTC2_HSYNC_DIS @@ -681,7 +677,8 @@ static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mod uint32_t crtc_ext_cntl; uint32_t disp_merge_cntl; - crtc_gen_cntl = (RADEON_CRTC_EXT_DISP_EN + crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL) & 0x00718000; + crtc_gen_cntl |= (RADEON_CRTC_EXT_DISP_EN | (format << 8) | RADEON_CRTC_DISP_REQ_EN_B | ((mode->flags & DRM_MODE_FLAG_DBLSCAN) -- 2.20.1