linux-kernel - [RFC PATCH v2 10/18] drm/amd/display: update lut3d and shaper lut to stream

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Date:   Mon,  9 Jan 2023 13:38:38 -0100
From:   Melissa Wen <mwen@...lia.com>
To:     harry.wentland@....com, sunpeng.li@....com,
        Rodrigo.Siqueira@....com, alexander.deucher@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...il.com,
        daniel@...ll.ch
Cc:     Joshua Ashton <joshua@...ggi.es>, alex.hung@....com,
        nicholas.kazlauskas@....com, sungjoon.kim@....com,
        seanpaul@...omium.org, bhawanpreet.lakha@....com,
        Shashank Sharma <shashank.sharma@....com>,
        ville.syrjala@...ux.intel.com, maarten.lankhorst@...ux.intel.com,
        mripard@...nel.org, tzimmermann@...e.de, kernel-dev@...lia.com,
        laurent.pinchart+renesas@...asonboard.com,
        Melissa Wen <mwen@...lia.com>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v2 10/18] drm/amd/display: update lut3d and shaper lut to stream

It follows the same path of out_transfer_func for stream updates, since
shaper LUT and 3D LUT is programmed in funcs.set_output_transfer_func()
and this function is called in the atomic commit_tail when
update_flags.bits.out_tf is set.

Signed-off-by: Melissa Wen <mwen@...lia.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 2c18c8527079..88f1130c3b83 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2562,7 +2562,7 @@ static enum surface_update_type check_update_surfaces_for_stream(
 			stream_update->integer_scaling_update)
 			su_flags->bits.scaling = 1;
 
-		if (stream_update->out_transfer_func)
+		if (stream_update->out_transfer_func || stream_update->lut3d_func)
 			su_flags->bits.out_tf = 1;
 
 		if (stream_update->abm_level)
@@ -2911,6 +2911,14 @@ static void copy_stream_update_to_stream(struct dc *dc,
 		       sizeof(struct dc_transfer_func_distributed_points));
 	}
 
+	if (update->func_shaper &&
+	    stream->func_shaper != update->func_shaper)
+		stream->func_shaper = update->func_shaper;
+
+	if (update->lut3d_func &&
+	    stream->lut3d_func != update->lut3d_func)
+		stream->lut3d_func = update->lut3d_func;
+
 	if (update->hdr_static_metadata)
 		stream->hdr_static_metadata = *update->hdr_static_metadata;
 
-- 
2.35.1