drm/i915/hdmi: implement get_hw_state
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 38a7006..bfe3754 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -757,6 +757,35 @@
intel_hdmi->set_infoframes(encoder, adjusted_mode);
}
+bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
+ u32 tmp;
+ int i;
+
+ tmp = I915_READ(DDI_BUF_CTL(intel_hdmi->ddi_port));
+
+ if (!(tmp & DDI_BUF_CTL_ENABLE))
+ return false;
+
+ for_each_pipe(i) {
+ tmp = I915_READ(DDI_FUNC_CTL(i));
+
+ if ((tmp & PIPE_DDI_PORT_MASK)
+ == PIPE_DDI_SELECT_PORT(intel_hdmi->ddi_port)) {
+ *pipe = i;
+ return true;
+ }
+ }
+
+ DRM_DEBUG_KMS("No pipe for ddi port %i found\n", intel_hdmi->ddi_port);
+
+ return true;
+}
+
void intel_enable_ddi(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;