drm/i915/hdmi: fetch infoframe status in get_config v2

This is useful for checking things later.

v2:
  - fix hsw infoframe enabled check (Ander)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
[danvet: Add the missing PIPE_CONF_CHECK_I(has_infoframe); line to the
hw state cross-checker.]
[danet: Squash in fixup from Jesse to correctly compute has_infoframe
in the hdmi compute_config function.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -10362,6 +10362,7 @@ intel_pipe_config_compare(struct drm_device *dev,
 	if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
 	    IS_VALLEYVIEW(dev))
 		PIPE_CONF_CHECK_I(limited_color_range);
+	PIPE_CONF_CHECK_I(has_infoframe);
 
 	PIPE_CONF_CHECK_I(has_audio);
 

drivers/gpu/drm/i915/intel_drv.h

@@ -292,6 +292,9 @@ struct intel_crtc_config {
 	 * between pch encoders and cpu encoders. */
 	bool has_pch_encoder;
 
+	/* Are we sending infoframes on the attached port */
+	bool has_infoframe;
+
 	/* CPU Transcoder for the pipe. Currently this can only differ from the
 	 * pipe on Haswell (where we have a special eDP transcoder). */
 	enum transcoder cpu_transcoder;
@@ -552,6 +555,7 @@ struct intel_hdmi {
 	void (*set_infoframes)(struct drm_encoder *encoder,
 			       bool enable,
 			       struct drm_display_mode *adjusted_mode);
+	bool (*infoframe_enabled)(struct drm_encoder *encoder);
 };
 
 struct intel_dp_mst_encoder;

drivers/gpu/drm/i915/intel_hdmi.c

@@ -166,6 +166,15 @@ static void g4x_write_infoframe(struct drm_encoder *encoder,
 	POSTING_READ(VIDEO_DIP_CTL);
 }
 
+static bool g4x_infoframe_enabled(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 val = I915_READ(VIDEO_DIP_CTL);
+
+	return val & VIDEO_DIP_ENABLE;
+}
+
 static void ibx_write_infoframe(struct drm_encoder *encoder,
 				enum hdmi_infoframe_type type,
 				const void *frame, ssize_t len)
@@ -204,6 +213,17 @@ static void ibx_write_infoframe(struct drm_encoder *encoder,
 	POSTING_READ(reg);
 }
 
+static bool ibx_infoframe_enabled(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
+	int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
+	u32 val = I915_READ(reg);
+
+	return val & VIDEO_DIP_ENABLE;
+}
+
 static void cpt_write_infoframe(struct drm_encoder *encoder,
 				enum hdmi_infoframe_type type,
 				const void *frame, ssize_t len)
@@ -245,6 +265,17 @@ static void cpt_write_infoframe(struct drm_encoder *encoder,
 	POSTING_READ(reg);
 }
 
+static bool cpt_infoframe_enabled(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
+	int reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
+	u32 val = I915_READ(reg);
+
+	return val & VIDEO_DIP_ENABLE;
+}
+
 static void vlv_write_infoframe(struct drm_encoder *encoder,
 				enum hdmi_infoframe_type type,
 				const void *frame, ssize_t len)
@@ -283,6 +314,17 @@ static void vlv_write_infoframe(struct drm_encoder *encoder,
 	POSTING_READ(reg);
 }
 
+static bool vlv_infoframe_enabled(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
+	int reg = VLV_TVIDEO_DIP_CTL(intel_crtc->pipe);
+	u32 val = I915_READ(reg);
+
+	return val & VIDEO_DIP_ENABLE;
+}
+
 static void hsw_write_infoframe(struct drm_encoder *encoder,
 				enum hdmi_infoframe_type type,
 				const void *frame, ssize_t len)
@@ -320,6 +362,18 @@ static void hsw_write_infoframe(struct drm_encoder *encoder,
 	POSTING_READ(ctl_reg);
 }
 
+static bool hsw_infoframe_enabled(struct drm_encoder *encoder)
+{
+	struct drm_device *dev = encoder->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
+	u32 ctl_reg = HSW_TVIDEO_DIP_CTL(intel_crtc->config.cpu_transcoder);
+	u32 val = I915_READ(ctl_reg);
+
+	return val & (VIDEO_DIP_ENABLE_AVI_HSW | VIDEO_DIP_ENABLE_SPD_HSW |
+		      VIDEO_DIP_ENABLE_VS_HSW);
+}
+
 /*
  * The data we write to the DIP data buffer registers is 1 byte bigger than the
  * HDMI infoframe size because of an ECC/reserved byte at position 3 (starting
@@ -724,6 +778,9 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
 	if (tmp & HDMI_MODE_SELECT_HDMI)
 		pipe_config->has_hdmi_sink = true;
 
+	if (intel_hdmi->infoframe_enabled(&encoder->base))
+		pipe_config->has_infoframe = true;
+
 	if (tmp & SDVO_AUDIO_ENABLE)
 		pipe_config->has_audio = true;
 
@@ -925,6 +982,9 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder,
 
 	pipe_config->has_hdmi_sink = intel_hdmi->has_hdmi_sink;
 
+	if (pipe_config->has_hdmi_sink)
+		pipe_config->has_infoframe = true;
+
 	if (intel_hdmi->color_range_auto) {
 		/* See CEA-861-E - 5.1 Default Encoding Parameters */
 		if (pipe_config->has_hdmi_sink &&
@@ -1619,18 +1679,23 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
 	if (IS_VALLEYVIEW(dev)) {
 		intel_hdmi->write_infoframe = vlv_write_infoframe;
 		intel_hdmi->set_infoframes = vlv_set_infoframes;
+		intel_hdmi->infoframe_enabled = vlv_infoframe_enabled;
 	} else if (IS_G4X(dev)) {
 		intel_hdmi->write_infoframe = g4x_write_infoframe;
 		intel_hdmi->set_infoframes = g4x_set_infoframes;
+		intel_hdmi->infoframe_enabled = g4x_infoframe_enabled;
 	} else if (HAS_DDI(dev)) {
 		intel_hdmi->write_infoframe = hsw_write_infoframe;
 		intel_hdmi->set_infoframes = hsw_set_infoframes;
+		intel_hdmi->infoframe_enabled = hsw_infoframe_enabled;
 	} else if (HAS_PCH_IBX(dev)) {
 		intel_hdmi->write_infoframe = ibx_write_infoframe;
 		intel_hdmi->set_infoframes = ibx_set_infoframes;
+		intel_hdmi->infoframe_enabled = ibx_infoframe_enabled;
 	} else {
 		intel_hdmi->write_infoframe = cpt_write_infoframe;
 		intel_hdmi->set_infoframes = cpt_set_infoframes;
+		intel_hdmi->infoframe_enabled = cpt_infoframe_enabled;
 	}
 
 	if (HAS_DDI(dev))