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drm/i915: completely reset the value of DDI_FUNC_CTL

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Don't rely on previous values already set on the register. Everything
we're not explicitly setting should be zero for now.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2012-08-08 14:15:30 -03:00 committed by Daniel Vetter
parent dfcef252e0
commit 602c43d34d
1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/i915/intel_ddi.c
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@ -723,12 +723,7 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
}
/* Enable PIPE_DDI_FUNC_CTL for the pipe to work in HDMI mode */
temp = I915_READ(DDI_FUNC_CTL(pipe));
temp &= ~PIPE_DDI_PORT_MASK;
temp &= ~PIPE_DDI_BPC_MASK;
temp &= ~PIPE_DDI_MODE_SELECT_MASK;
temp &= ~(PIPE_DDI_PVSYNC | PIPE_DDI_PHSYNC);
temp |= PIPE_DDI_FUNC_ENABLE | PIPE_DDI_SELECT_PORT(port);
temp = PIPE_DDI_FUNC_ENABLE | PIPE_DDI_SELECT_PORT(port);
switch (intel_crtc->bpp) {
case 18: