[PATCH 1/2] drm/i915/dp: Refactor intel_dp_in_hdr_mode() for broader reuse

[Chaitanya Kumar Borah]

The intel_dp_in_hdr_mode() helper was previously defined in
intel_dp_aux_backlight.c but is generally useful beyond that
context. Move the function to intel_dp.c and declare it in
intel_dp.h to make it accessible to other DP-related code
paths that need to check HDR metadata state.

This is a pure refactor with no functional change and
prepares for a follow-up patch that uses this helper.

Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c             | 13 +++++++++++++
 drivers/gpu/drm/i915/display/intel_dp.h             |  1 +
 .../gpu/drm/i915/display/intel_dp_aux_backlight.c   | 13 -------------
 3 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 54d88f24b689..59d814abd3a9 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2917,6 +2917,19 @@ static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp,
 	}
 }
 
+bool
+intel_dp_in_hdr_mode(const struct drm_connector_state *conn_state)
+{
+	struct hdr_output_metadata *hdr_metadata;
+
+	if (!conn_state->hdr_output_metadata)
+		return false;
+
+	hdr_metadata = conn_state->hdr_output_metadata->data;
+
+	return hdr_metadata->hdmi_metadata_type1.eotf == HDMI_EOTF_SMPTE_ST2084;
+}
+
 static void
 intel_dp_compute_hdr_metadata_infoframe_sdp(struct intel_dp *intel_dp,
 					    struct intel_crtc_state *crtc_state,
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 0657f5681196..5def589e3c0e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -214,5 +214,6 @@ int intel_dp_compute_min_hblank(struct intel_crtc_state *crtc_state,
 
 int intel_dp_dsc_bpp_step_x16(const struct intel_connector *connector);
 void intel_dp_dpcd_set_probe(struct intel_dp *intel_dp, bool force_on_external);
+bool intel_dp_in_hdr_mode(const struct drm_connector_state *conn_state);
 
 #endif /* __INTEL_DP_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
index 41228478b21c..12084a542fc5 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
@@ -225,19 +225,6 @@ intel_dp_aux_hdr_set_aux_backlight(const struct drm_connector_state *conn_state,
 			connector->base.base.id, connector->base.name);
 }
 
-static bool
-intel_dp_in_hdr_mode(const struct drm_connector_state *conn_state)
-{
-	struct hdr_output_metadata *hdr_metadata;
-
-	if (!conn_state->hdr_output_metadata)
-		return false;
-
-	hdr_metadata = conn_state->hdr_output_metadata->data;
-
-	return hdr_metadata->hdmi_metadata_type1.eotf == HDMI_EOTF_SMPTE_ST2084;
-}
-
 static void
 intel_dp_aux_hdr_set_backlight(const struct drm_connector_state *conn_state, u32 level)
 {
-- 
2.25.1