diff options
| author | Paulo Zanoni | 2012-11-29 11:29:32 -0200 |
|---|---|---|
| committer | Daniel Vetter | 2012-12-08 14:00:35 +0100 |
| commit | d4b1931c149e1cf78a930d7abde00bd378272e6e (patch) | |
| tree | 54e314dbd541f9b3d8dcfef818d7704af35069cd /drivers/gpu/drm/i915/intel_crt.c | |
| parent | 248138b59880a3cc69e9b7f0e06fb0caedd58305 (diff) | |
drm/i915: reject modes the LPT FDI receiver can't handle
More specifically, the LPT FDI RX only supports 8bpc and a maximum of
2 lanes, so anything above that won't work and should be rejected.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_crt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_crt.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index 5c7774396e10..3084d018c740 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -198,6 +198,11 @@ static int intel_crt_mode_valid(struct drm_connector *connector, if (mode->clock > max_clock) return MODE_CLOCK_HIGH; + /* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */ + if (HAS_PCH_LPT(dev) && + (ironlake_get_lanes_required(mode->clock, 270000, 24) > 2)) + return MODE_CLOCK_HIGH; + return MODE_OK; } |