[PATCH 3/8] drm/amd/display: Add bypass case for PQ transfer function

[Harry Wentland]

From: Amy Zhang <Amy.Zhang at amd.com>

- Source and destination color space should be the same for
  app control case
- Bypass degamma, regamma, and gamut remap
- Add hdr supported check for info frame

Change-Id: I5bb982159589f21d94a193b048f6a427662bba50
Signed-off-by: Amy Zhang <Amy.Zhang at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Harry Wentland <Harry.Wentland at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c           | 2 +-
 drivers/gpu/drm/amd/display/dc/dc.h                         | 2 ++
 drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 5 ++++-
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 991828f503aa..4d556b379524 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1675,7 +1675,7 @@ static void set_hdr_static_info_packet(
 
 	hdr_metadata = surface->public.hdr_static_ctx;
 
-	if (!hdr_metadata.is_hdr)
+	if (!hdr_metadata.hdr_supported)
 		return;
 
 	if (dc_is_hdmi_signal(signal)) {
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 13e7134fccb8..71d7dde79ae0 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -186,6 +186,7 @@ enum {
 };
 
 struct dc_hdr_static_metadata {
+	bool hdr_supported;
 	bool is_hdr;
 
 	/* display chromaticities and white point in units of 0.00001 */
@@ -207,6 +208,7 @@ struct dc_hdr_static_metadata {
 enum dc_transfer_func_type {
 	TF_TYPE_PREDEFINED,
 	TF_TYPE_DISTRIBUTED_POINTS,
+	TF_TYPE_BYPASS
 };
 
 struct dc_transfer_func_distributed_points {
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 9b6d251a1c22..9c9183f96e04 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -279,6 +279,8 @@ static bool dce110_set_input_transfer_func(
 			result = false;
 			break;
 		}
+	} else if (tf->public.type == TF_TYPE_BYPASS) {
+		ipp->funcs->ipp_set_degamma(ipp, IPP_DEGAMMA_MODE_BYPASS);
 	} else {
 		/*TF_TYPE_DISTRIBUTED_POINTS - Not supported in DCE 11*/
 		result = false;
@@ -428,7 +430,8 @@ static bool dce110_translate_regamma_to_hw_format(const struct dc_transfer_func
 	int32_t segment_start, segment_end;
 	uint32_t i, j, k, seg_distr[16], increment, start_index, hw_points;
 
-	if (output_tf == NULL || regamma_params == NULL)
+	if (output_tf == NULL || regamma_params == NULL ||
+			output_tf->type == TF_TYPE_BYPASS)
 		return false;
 
 	arr_points = regamma_params->arr_points;
-- 
2.9.3