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drm/i915: Sync mode_valid/mode_set with intel video driver

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This covers:
Limit CRT DAC speed better.

and also clears the border color in case it's set to some garbage, which would
fix ugly outlines in the blank regions of the CRT.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
[anholt: replaced *drm_dev with *dev]
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zhao Yakui 2009-03-03 18:06:42 +08:00 • committed by Eric Anholt
parent ba01079c71
commit 6bcdcd9e3c
1 changed files with 17 additions and 4 deletions
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21
drivers/gpu/drm/i915/intel_crt.c
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@ -64,11 +64,21 @@ static void intel_crt_dpms(struct drm_encoder *encoder, int mode)
static int intel_crt_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct drm_device *dev = connector->dev;
int max_clock = 0;
if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
return MODE_NO_DBLESCAN;
if (mode->clock > 400000 || mode->clock < 25000)
return MODE_CLOCK_RANGE;
if (mode->clock < 25000)
return MODE_CLOCK_LOW;
if (!IS_I9XX(dev))
max_clock = 350000;
else
max_clock = 400000;
if (mode->clock > max_clock)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
@ -113,10 +123,13 @@ static void intel_crt_mode_set(struct drm_encoder *encoder,
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
adpa |= ADPA_VSYNC_ACTIVE_HIGH;
if (intel_crtc->pipe == 0)
if (intel_crtc->pipe == 0) {
adpa |= ADPA_PIPE_A_SELECT;
else
I915_WRITE(BCLRPAT_A, 0);
} else {
adpa |= ADPA_PIPE_B_SELECT;
I915_WRITE(BCLRPAT_B, 0);
}
I915_WRITE(ADPA, adpa);
}