[Intel-gfx] [PATCH 2/5] drm/i915: Add checking a specific Video DIP is enabled or not

[Gwan-gyeong Mun]

Because DP ports don't use intel_hdmi_infoframes_enabled() machanism,
DP ports requires a way to check a specific infoframe (aka. Video DIP )
is enabled or not.

Signed-off-by: Gwan-gyeong Mun <gwan-gyeong....@intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdmi.c | 21 +++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_hdmi.h |  3 +++
 2 files changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c 
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 3c2aea93ae02..aed06a5da489 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -620,6 +620,27 @@ void intel_enable_infoframe(struct intel_encoder *encoder,
        }
 }
 
+bool intel_infoframe_enabled(struct intel_encoder *encoder,
+                            const struct intel_crtc_state *crtc_state,
+                            unsigned int type)
+{
+       struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+       struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
+       u32 val = 0;
+
+       val = dig_port->infoframes_enabled(encoder, crtc_state);
+
+       if (HAS_DDI(dev_priv)) {
+               if (val & hsw_infoframe_enable(type))
+                       return true;
+       } else {
+               if (val & g4x_infoframe_enable(type))
+                       return true;
+       }
+
+       return false;
+}
+
 u32 intel_hdmi_infoframe_enable(unsigned int type)
 {
        int i;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.h 
b/drivers/gpu/drm/i915/display/intel_hdmi.h
index 86f925526514..96d50f591b69 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.h
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.h
@@ -51,5 +51,8 @@ void intel_read_infoframe(struct intel_encoder *encoder,
 void intel_enable_infoframe(struct intel_encoder *encoder, bool enable,
                            const struct intel_crtc_state *crtc_state,
                            unsigned int type);
+bool intel_infoframe_enabled(struct intel_encoder *encoder,
+                            const struct intel_crtc_state *crtc_state,
+                            unsigned int type);
 
 #endif /* __INTEL_HDMI_H__ */
-- 
2.23.0

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