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 1cde6c045da257849af94536e9624235767b3dad..42fc5052819040c8fe81ac76a8db613132c50837 100644 (file)
--- 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);