diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index ff993a01d03..e3928b92282 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1250,6 +1250,54 @@ static void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) } } +static bool intel_dp_get_hw_state(struct intel_encoder *encoder, + enum pipe *pipe) +{ + struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); + struct drm_device *dev = encoder->base.dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 tmp = I915_READ(intel_dp->output_reg); + + if (!(tmp & DP_PORT_EN)) + return false; + + if (is_cpu_edp(intel_dp) && IS_GEN7(dev)) { + *pipe = PORT_TO_PIPE_CPT(tmp); + } else if (!HAS_PCH_CPT(dev) || is_cpu_edp(intel_dp)) { + *pipe = PORT_TO_PIPE(tmp); + } else { + u32 trans_sel; + u32 trans_dp; + int i; + + switch (intel_dp->output_reg) { + case PCH_DP_B: + trans_sel = TRANS_DP_PORT_SEL_B; + break; + case PCH_DP_C: + trans_sel = TRANS_DP_PORT_SEL_C; + break; + case PCH_DP_D: + trans_sel = TRANS_DP_PORT_SEL_D; + break; + default: + return true; + } + + for_each_pipe(i) { + trans_dp = I915_READ(TRANS_DP_CTL(i)); + if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { + *pipe = i; + return true; + } + } + } + + DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", intel_dp->output_reg); + + return true; +} + static void intel_disable_dp(struct intel_encoder *encoder) { struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); @@ -2486,6 +2534,8 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port) intel_encoder->enable = intel_enable_dp; intel_encoder->disable = intel_disable_dp; + intel_encoder->get_hw_state = intel_dp_get_hw_state; + intel_connector->get_hw_state = intel_connector_get_hw_state; /* Set up the DDC bus. */ switch (port) { |