From: Adam Jackson Date: Fri, 16 Jul 2010 18:46:30 +0000 (-0400) Subject: drm/i915/pch: Set transcoder sync polarity for DP based on actual mode X-Git-Tag: v2.6.36-rc1~540^2~11^2~17 X-Git-Url: https://bbs.cooldavid.org/git/?a=commitdiff_plain;h=d6d952689a48375afb97f619f77d548f16d45a92;p=net-next-2.6.git drm/i915/pch: Set transcoder sync polarity for DP based on actual mode Signed-off-by: Adam Jackson Signed-off-by: Eric Anholt --- diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 82d1b91bdfa..9a95a27a846 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1998,9 +1998,12 @@ static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode) reg = I915_READ(trans_dp_ctl); reg &= ~TRANS_DP_PORT_SEL_MASK; reg = TRANS_DP_OUTPUT_ENABLE | - TRANS_DP_ENH_FRAMING | - TRANS_DP_VSYNC_ACTIVE_HIGH | - TRANS_DP_HSYNC_ACTIVE_HIGH; + TRANS_DP_ENH_FRAMING; + + if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC) + reg |= TRANS_DP_HSYNC_ACTIVE_HIGH; + if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC) + reg |= TRANS_DP_VSYNC_ACTIVE_HIGH; switch (intel_trans_dp_port_sel(crtc)) { case PCH_DP_B: