Similar to intel_encoder_is_dp() and friends.

Cc: Sergey Senozhatsky <senozhat...@chromium.org>
Cc: Ville Syrjala <ville.syrj...@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display_types.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h 
b/drivers/gpu/drm/i915/display/intel_display_types.h
index 167aa8ec4948..0ae026a850c2 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1959,6 +1959,19 @@ static inline bool intel_encoder_is_dp(struct 
intel_encoder *encoder)
        }
 }
 
+static inline bool intel_encoder_is_hdmi(struct intel_encoder *encoder)
+{
+       switch (encoder->type) {
+       case INTEL_OUTPUT_HDMI:
+               return true;
+       case INTEL_OUTPUT_DDI:
+               /* See if the HDMI encoder is valid. */
+               return 
i915_mmio_reg_valid(enc_to_intel_hdmi(encoder)->hdmi_reg);
+       default:
+               return false;
+       }
+}
+
 static inline struct intel_lspcon *
 enc_to_intel_lspcon(struct intel_encoder *encoder)
 {
-- 
2.39.5

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