From 6043801f937ada9c9ed9dfa3c6ce542a79643401 Mon Sep 17 00:00:00 2001 From: Deepak M Date: Tue, 14 Feb 2017 18:46:16 +0530 Subject: [PATCH] drm/i915: Set the Z inversion overlap field Dual link Z-inversion overlap field is present in MIPI_CTRL register unlike the older platforms, hence setting the same in this patch. Signed-off-by: Deepak M Signed-off-by: Madhav Chauhan Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1487078180-15147-5-git-send-email-madhav.chauhan@intel.com --- drivers/gpu/drm/i915/intel_dsi.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index c3d97e0bc59d..99dd7e12abc0 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -456,12 +456,21 @@ static void intel_dsi_port_enable(struct intel_encoder *encoder) if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { u32 temp; - - temp = I915_READ(VLV_CHICKEN_3); - temp &= ~PIXEL_OVERLAP_CNT_MASK | + if (IS_GEN9_LP(dev_priv)) { + for_each_dsi_port(port, intel_dsi->ports) { + temp = I915_READ(MIPI_CTRL(port)); + temp &= ~BXT_PIXEL_OVERLAP_CNT_MASK | + intel_dsi->pixel_overlap << + BXT_PIXEL_OVERLAP_CNT_SHIFT; + I915_WRITE(MIPI_CTRL(port), temp); + } + } else { + temp = I915_READ(VLV_CHICKEN_3); + temp &= ~PIXEL_OVERLAP_CNT_MASK | intel_dsi->pixel_overlap << PIXEL_OVERLAP_CNT_SHIFT; - I915_WRITE(VLV_CHICKEN_3, temp); + I915_WRITE(VLV_CHICKEN_3, temp); + } } for_each_dsi_port(port, intel_dsi->ports) { -- 2.20.1