diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2012-01-20 15:03:30 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-01-24 17:35:52 +0000 |
| commit | 9aa59993e226af94088adaee993eb8cfd33ae295 (patch) | |
| tree | c779fd613a1ce2adbf2b6fa7350a8fdb5ffe76a7 /drivers/gpu/drm/radeon/atombios_crtc.c | |
| parent | 27d9cc8428367e0fec2fc0fc6385e9241b079c3a (diff) | |
drm/radeon/kms: refine TMDS dual link checks
HDMI 1.3 defines single link clocks up to 340 Mhz.
Refine the current dual link checks to only enable
dual link for DVI > 165 Mhz or HDMI > 340 Mhz if the
hw supports HDMI 1.3 (DCE3+).
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=44755
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 807b89b4933f..891935271d34 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -518,6 +518,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, int encoder_mode = 0; u32 dp_clock = mode->clock; int bpc = 8; + bool is_duallink = false; /* reset the pll flags */ pll->flags = 0; @@ -552,6 +553,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, if (connector && connector->display_info.bpc) bpc = connector->display_info.bpc; encoder_mode = atombios_get_encoder_mode(encoder); + is_duallink = radeon_dig_monitor_is_duallink(encoder, mode->clock); if ((radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) || (radeon_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE)) { if (connector) { @@ -647,7 +649,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, if (dig->coherent_mode) args.v3.sInput.ucDispPllConfig |= DISPPLL_CONFIG_COHERENT_MODE; - if (mode->clock > 165000) + if (is_duallink) args.v3.sInput.ucDispPllConfig |= DISPPLL_CONFIG_DUAL_LINK; } |