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drm/i915: Move the encoder vs. FDI dotclock check out from encoder .get_config()

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Currently we check if the encoder's idea of dotclock agrees with what
we calculated based on the FDI parameters. We do this in the encoder
.get_config() hooks, which isn't so nice in case the BIOS (or some other
outside party) made a mess of the state and we're just trying to take
over.

So as a prep step to being able sanitize such a bogus state, move the
the sanity check to just after we've read out the entire state. If
we then need to sanitize a bad state, it should be easier to move the
sanity check to occur after sanitation instead of before it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1455738073-14502-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
This commit is contained in:
Ville Syrjälä
2016-02-17 21:41:09 +02:00
parent 1260f07e3e
commit e3b247da89
7 changed files with 38 additions and 58 deletions
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3
drivers/gpu/drm/i915/intel_hdmi.c
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@@ -952,9 +952,6 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
if (pipe_config->pixel_multiplier)
dotclock /= pipe_config->pixel_multiplier;
if (HAS_PCH_SPLIT(dev_priv->dev))
ironlake_check_encoder_dotclock(pipe_config, dotclock);
pipe_config->base.adjusted_mode.crtc_clock = dotclock;
}