diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 2766b5e5c0ac..6260a882fbe4 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1615,6 +1615,35 @@ void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv, I915_WRITE(reg, val); } +int intel_ddi_toggle_hdcp_signalling(struct intel_encoder *intel_encoder, + bool enable) +{ + struct drm_device *dev = intel_encoder->base.dev; + struct drm_i915_private *dev_priv = to_i915(dev); + enum pipe pipe = 0; + int ret = 0; + uint32_t tmp; + + if (WARN_ON(!intel_display_power_get_if_enabled(dev_priv, + intel_encoder->power_domain))) + return -ENXIO; + + if (WARN_ON(!intel_encoder->get_hw_state(intel_encoder, &pipe))) { + ret = -EIO; + goto out; + } + + tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe)); + if (enable) + tmp |= TRANS_DDI_HDCP_SIGNALLING; + else + tmp &= ~TRANS_DDI_HDCP_SIGNALLING; + I915_WRITE(TRANS_DDI_FUNC_CTL(pipe), tmp); +out: + intel_display_power_put(dev_priv, intel_encoder->power_domain); + return ret; +} + bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector) { struct drm_device *dev = intel_connector->base.dev; |