From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue, 5 May 2015 14:06:26 +0000 (+0300)
Subject: drm/i915: Fix hdmi clock readout with pixel repeat
X-Git-Tag: v4.3-rc1~75^2~36^2~299
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=be69a1335fceb706e19f7eaf8d34c9a721c5baf9;p=karo-tx-linux.git

drm/i915: Fix hdmi clock readout with pixel repeat

Account for the pixel multiplier when reading out the HDMI
mode dotclock. Makes the state checked happier on my ILK when using
double clocked modes.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chandra Konduru <Chandra.konduru@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 1cde6c045da2..42fc50528190 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -943,6 +943,9 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
 	else
 		dotclock = pipe_config->port_clock;
 
+	if (pipe_config->pixel_multiplier)
+		dotclock /= pipe_config->pixel_multiplier;
+
 	if (HAS_PCH_SPLIT(dev_priv->dev))
 		ironlake_check_encoder_dotclock(pipe_config, dotclock);