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Revert "drm/i915: reverse dp link param selection, prefer fast over wide again" 

This reverts commit 38aecea0cc.

This breaks Haswell Thinkpad + Lenovo dock in SST mode with a HDMI monitor attached.

Before this we can 1920x1200 mode, after this we only ever get 1024x768, and
a lot of deferring.

This didn't revert clean, but this should be fine.

bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1117008
Cc: stable@vger.kernel.org # v3.15
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Dave Airlie 2014-07-14 11:04:39 +10:00 committed by Daniel Vetter
parent 9c8958bc24
commit c693099294
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_dp.c
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@ -906,8 +906,8 @@ intel_dp_compute_config(struct intel_encoder *encoder,
mode_rate = intel_dp_link_required(adjusted_mode->crtc_clock,
bpp);
for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) {
for (clock = min_clock; clock <= max_clock; clock++) {
for (clock = min_clock; clock <= max_clock; clock++) {
for (lane_count = min_lane_count; lane_count <= max_lane_count; lane_count <<= 1) {
link_clock = drm_dp_bw_code_to_link_rate(bws[clock]);
link_avail = intel_dp_max_data_rate(link_clock,
lane_count);