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drm/i915: use cpu/pch transcoder on intel_enable_pipe

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This function runs on Haswell, so set the correct pch_transcoder and
cpu_transcoder variables. This fixes an assertion failure on Haswell
VGA.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2012-11-20 13:27:37 -02:00 committed by Daniel Vetter
parent d63fa0dc1a
commit cc391bbbdd
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/i915/intel_display.c
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@ -1812,9 +1812,15 @@ static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
{
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
enum transcoder pch_transcoder;
int reg;
u32 val;
if (IS_HASWELL(dev_priv->dev))
pch_transcoder = TRANSCODER_A;
else
pch_transcoder = pipe;
/*
* A pipe without a PLL won't actually be able to drive bits from
* a plane. On ILK+ the pipe PLLs are integrated, so we don't
@ -1825,8 +1831,8 @@ static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
else {
if (pch_port) {
/* if driving the PCH, we need FDI enabled */
assert_fdi_rx_pll_enabled(dev_priv, pipe);
assert_fdi_tx_pll_enabled(dev_priv, pipe);
assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
assert_fdi_tx_pll_enabled(dev_priv, cpu_transcoder);
}
/* FIXME: assert CPU port conditions for SNB+ */
}