diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 7df024c63bff..1900c4d48376 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -114,6 +114,8 @@ static void intel_dp_link_down(struct intel_dp *intel_dp); static bool edp_panel_vdd_on(struct intel_dp *intel_dp); static void edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); static void vlv_init_panel_power_sequencer(struct intel_dp *intel_dp); +static void vlv_steal_power_sequencer(struct drm_device *dev, + enum pipe pipe); int intel_dp_max_link_bw(struct intel_dp *intel_dp) @@ -375,9 +377,13 @@ vlv_power_sequencer_pipe(struct intel_dp *intel_dp) struct drm_i915_private *dev_priv = dev->dev_private; struct intel_encoder *encoder; unsigned int pipes = (1 << PIPE_A) | (1 << PIPE_B); + enum pipe pipe; lockdep_assert_held(&dev_priv->pps_mutex); + /* We should never land here with regular DP ports */ + WARN_ON(!is_edp(intel_dp)); + if (intel_dp->pps_pipe != INVALID_PIPE) return intel_dp->pps_pipe; @@ -403,9 +409,12 @@ vlv_power_sequencer_pipe(struct intel_dp *intel_dp) * are two power sequencers and up to two eDP ports. */ if (WARN_ON(pipes == 0)) - return PIPE_A; + pipe = PIPE_A; + else + pipe = ffs(pipes) - 1; - intel_dp->pps_pipe = ffs(pipes) - 1; + vlv_steal_power_sequencer(dev, pipe); + intel_dp->pps_pipe = pipe; DRM_DEBUG_KMS("picked pipe %c power sequencer for port %c\n", pipe_name(intel_dp->pps_pipe), |