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authorKeith Packard <keithp@keithp.com>2011-11-02 13:03:47 -0700
committerKeith Packard <keithp@keithp.com>2011-11-16 20:26:27 -0800
commit9a10f401a401ca69c6537641c8fc0d6b57b5aee8 (patch)
tree1efc8b3a22ea2a725d2eec2c66a69790a7b0e677
parentb34f1f0931575bf1e1483472a5202b8247fa9b10 (diff)
downloadop-kernel-dev-9a10f401a401ca69c6537641c8fc0d6b57b5aee8.zip
op-kernel-dev-9a10f401a401ca69c6537641c8fc0d6b57b5aee8.tar.gz
drm/i915: Use DPCD value for max DP lanes.
The BIOS VBT value for an eDP panel has been shown to be incorrect on one machine, and we haven't found any machines where the DPCD value was wrong, so we'll use the DPCD value everywhere. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
-rw-r--r--drivers/gpu/drm/i915/intel_dp.c23
1 files changed, 9 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 8c3819b..ec28aeb 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -154,16 +154,12 @@ intel_edp_link_config(struct intel_encoder *intel_encoder,
static int
intel_dp_max_lane_count(struct intel_dp *intel_dp)
{
- int max_lane_count = 4;
-
- if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) {
- max_lane_count = intel_dp->dpcd[DP_MAX_LANE_COUNT] & 0x1f;
- switch (max_lane_count) {
- case 1: case 2: case 4:
- break;
- default:
- max_lane_count = 4;
- }
+ int max_lane_count = intel_dp->dpcd[DP_MAX_LANE_COUNT] & 0x1f;
+ switch (max_lane_count) {
+ case 1: case 2: case 4:
+ break;
+ default:
+ max_lane_count = 4;
}
return max_lane_count;
}
@@ -765,12 +761,11 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
continue;
intel_dp = enc_to_intel_dp(encoder);
- if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT || is_pch_edp(intel_dp)) {
+ if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT ||
+ intel_dp->base.type == INTEL_OUTPUT_EDP)
+ {
lane_count = intel_dp->lane_count;
break;
- } else if (is_cpu_edp(intel_dp)) {
- lane_count = dev_priv->edp.lanes;
- break;
}
}
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