path: root/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0070-drm-amd-display-Refactor-output-transfer-function-to.patch

From 3c028814f813567158147857a73875adc4c0e711 Mon Sep 17 00:00:00 2001
From: Anthony Koo <Anthony.Koo@amd.com>
Date: Thu, 15 Dec 2016 12:09:46 -0500
Subject: [PATCH 0070/4131] drm/amd/display: Refactor output transfer function
 to stream

Refactor part 3 - Moving output transfer function from surface to stream

Split HWSS to program degamma and regamma separately.
Degamma should be dependent on input transfer function.
And Regamma should depend on the desired output transfer function.

Signed-off-by: Anthony Koo <anthony.koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.c    | 11 ++++
 drivers/gpu/drm/amd/display/dc/core/dc.c           | 23 +++++---
 drivers/gpu/drm/amd/display/dc/core/dc_stream.c    |  3 +
 drivers/gpu/drm/amd/display/dc/core/dc_surface.c   |  3 -
 drivers/gpu/drm/amd/display/dc/dc.h                |  7 ++-
 .../amd/display/dc/dce110/dce110_hw_sequencer.c    | 65 ++++++++++++++++++----
 drivers/gpu/drm/amd/display/dc/inc/core_types.h    |  3 +
 drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h  |  7 ++-
 8 files changed, 95 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
index 0311090..6aede70 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -512,6 +512,7 @@ static void fill_gamma_from_crtc(
 {
 	int i;
 	struct dc_gamma *gamma;
+	struct dc_transfer_func *input_tf;
 	uint16_t *red, *green, *blue;
 	int end = (crtc->gamma_size > NUM_OF_RAW_GAMMA_RAMP_RGB_256) ?
 			NUM_OF_RAW_GAMMA_RAMP_RGB_256 : crtc->gamma_size;
@@ -539,6 +540,16 @@ static void fill_gamma_from_crtc(
 	gamma->size = sizeof(gamma->gamma_ramp_rgb256x3x16);
 
 	dc_surface->gamma_correction = gamma;
+
+	input_tf = dc_create_transfer_func(adev->dm.dc);
+
+	if (input_tf == NULL)
+		return;
+
+	input_tf->type = TF_TYPE_PREDEFINED;
+	input_tf->tf = TRANSFER_FUNCTION_SRGB;
+
+	dc_surface->in_transfer_func = input_tf;
 }
 
 static void fill_plane_attributes(
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index f20701a..df1bae8 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1394,6 +1394,7 @@ void dc_update_surfaces_for_target(struct dc *dc, struct dc_surface_update *upda
 
 		for (j = 0; j < context->res_ctx.pool->pipe_count; j++) {
 			struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[j];
+			struct core_stream *stream = pipe_ctx->stream;
 
 			if (pipe_ctx->surface != surface)
 				continue;
@@ -1472,15 +1473,14 @@ void dc_update_surfaces_for_target(struct dc *dc, struct dc_surface_update *upda
 
 			if (updates[i].out_transfer_func &&
 					updates[i].out_transfer_func !=
-					surface->public.out_transfer_func) {
-				if (surface->public.out_transfer_func != NULL)
+					stream->public.out_transfer_func) {
+				if (stream->public.out_transfer_func != NULL)
 					dc_transfer_func_release(
-							surface->public.
+							stream->public.
 							out_transfer_func);
-
 				dc_transfer_func_retain(
 						updates[i].out_transfer_func);
-				surface->public.out_transfer_func =
+				stream->public.out_transfer_func =
 						updates[i].out_transfer_func;
 			}
 		}
@@ -1517,11 +1517,18 @@ void dc_update_surfaces_for_target(struct dc *dc, struct dc_surface_update *upda
 			}
 
 			if (is_new_pipe_surface[j] ||
+					updates[i].in_transfer_func)
+				core_dc->hwss.set_input_transfer_func(
+						pipe_ctx, pipe_ctx->surface);
+
+			if (is_new_pipe_surface[j] ||
 					updates[i].gamma ||
-					updates[i].in_transfer_func ||
 					updates[i].out_transfer_func)
-				core_dc->hwss.set_gamma_correction(
-						pipe_ctx, pipe_ctx->surface);
+				core_dc->hwss.set_output_transfer_func(
+						pipe_ctx,
+						pipe_ctx->surface,
+						pipe_ctx->stream);
+
 		}
 		if (apply_ctx) {
 			core_dc->hwss.apply_ctx_for_surface(core_dc, surface, context);
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 8d6aa60..237436e 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -89,6 +89,9 @@ static bool construct(struct core_stream *stream,
 static void destruct(struct core_stream *stream)
 {
 	dc_sink_release(&stream->sink->public);
+	if (stream->public.out_transfer_func != NULL)
+		dc_transfer_func_release(
+				stream->public.out_transfer_func);
 }
 
 void dc_stream_retain(const struct dc_stream *dc_stream)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
index 26f2f76..1ca40a2 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
@@ -76,9 +76,6 @@ static void destruct(struct surface *surface)
 	if (surface->protected.public.in_transfer_func != NULL)
 		dc_transfer_func_release(
 				surface->protected.public.in_transfer_func);
-	if (surface->protected.public.out_transfer_func != NULL)
-		dc_transfer_func_release(
-				surface->protected.public.out_transfer_func);
 }
 
 /*******************************************************************************
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index c7905b3..3f30afc 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -254,6 +254,7 @@ struct dc_transfer_func_distributed_points {
 enum dc_transfer_func_predefined {
 	TRANSFER_FUNCTION_SRGB,
 	TRANSFER_FUNCTION_BT709,
+	TRANSFER_FUNCTION_PQ,
 	TRANSFER_FUNCTION_LINEAR,
 };
 
@@ -287,7 +288,6 @@ struct dc_surface {
 	const struct dc_gamma *gamma_correction;
 
 	const struct dc_transfer_func *in_transfer_func;
-	const struct dc_transfer_func *out_transfer_func;
 };
 
 struct dc_plane_info {
@@ -527,10 +527,11 @@ struct dc_stream {
 
 	struct freesync_context freesync_ctx;
 
-	/* TODO: dithering */
-	/* TODO: transfer function (CSC/regamma/gamut remap) */
+	const struct dc_transfer_func *out_transfer_func;
 	struct colorspace_transform gamut_remap_matrix;
 	struct csc_transform csc_color_matrix;
+
+	/* TODO: dithering */
 	/* TODO: custom INFO packets */
 	/* TODO: ABM info (DMCU) */
 	/* TODO: PSR info */
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 f6984e9..72017d5 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
@@ -231,11 +231,61 @@ static void build_prescale_params(struct ipp_prescale_params *prescale_params,
 	}
 }
 
-static bool dce110_set_gamma_correction(
+static bool dce110_set_degamma(
 	struct pipe_ctx *pipe_ctx,
 	const struct core_surface *surface)
 {
 	struct input_pixel_processor *ipp = pipe_ctx->ipp;
+	const struct core_transfer_func *tf = NULL;
+	struct ipp_prescale_params prescale_params = { 0 };
+	bool result = true;
+
+	if (ipp == NULL)
+		return false;
+
+	if (surface->public.in_transfer_func)
+		tf = DC_TRANSFER_FUNC_TO_CORE(surface->public.in_transfer_func);
+
+	build_prescale_params(&prescale_params, surface);
+	ipp->funcs->ipp_program_prescale(ipp, &prescale_params);
+
+	if (tf == NULL) {
+		/* Default case if no input transfer function specified */
+		ipp->funcs->ipp_set_degamma(ipp,
+				IPP_DEGAMMA_MODE_BYPASS);
+	} else if (tf->public.type == TF_TYPE_PREDEFINED) {
+		switch (tf->public.tf) {
+		case TRANSFER_FUNCTION_SRGB:
+			ipp->funcs->ipp_set_degamma(ipp,
+					IPP_DEGAMMA_MODE_HW_sRGB);
+			break;
+		case TRANSFER_FUNCTION_BT709:
+			ipp->funcs->ipp_set_degamma(ipp,
+					IPP_DEGAMMA_MODE_HW_xvYCC);
+			break;
+		case TRANSFER_FUNCTION_LINEAR:
+			ipp->funcs->ipp_set_degamma(ipp,
+					IPP_DEGAMMA_MODE_BYPASS);
+			break;
+		case TRANSFER_FUNCTION_PQ:
+			result = false;
+			break;
+		default:
+			result = false;
+		}
+	} else {
+		/*TF_TYPE_DISTRIBUTED_POINTS - Not supported in DCE 11*/
+		result = false;
+	}
+
+	return result;
+}
+
+static bool dce110_set_output_transfer_func(
+	struct pipe_ctx *pipe_ctx,
+	const struct core_surface *surface, /* Surface - To be removed */
+	const struct core_stream *stream)
+{
 	struct output_pixel_processor *opp = pipe_ctx->opp;
 	const struct core_gamma *ramp = NULL;
 	struct ipp_prescale_params prescale_params = { 0 };
@@ -253,20 +303,10 @@ static bool dce110_set_gamma_correction(
 
 	opp->funcs->opp_power_on_regamma_lut(opp, true);
 
-	if (ipp) {
-		build_prescale_params(&prescale_params, surface);
-		ipp->funcs->ipp_program_prescale(ipp, &prescale_params);
-	}
-
 	if (ramp && calculate_regamma_params(regamma_params, ramp, surface)) {
-
 		opp->funcs->opp_program_regamma_pwl(opp, regamma_params);
-		if (ipp)
-			ipp->funcs->ipp_set_degamma(ipp, IPP_DEGAMMA_MODE_HW_sRGB);
 		opp->funcs->opp_set_regamma_mode(opp, OPP_REGAMMA_USER);
 	} else {
-		if (ipp)
-			ipp->funcs->ipp_set_degamma(ipp, IPP_DEGAMMA_MODE_BYPASS);
 		opp->funcs->opp_set_regamma_mode(opp, OPP_REGAMMA_BYPASS);
 	}
 
@@ -1904,7 +1944,8 @@ static const struct hw_sequencer_funcs dce110_funcs = {
 	.set_plane_config = set_plane_config,
 	.update_plane_addr = update_plane_addr,
 	.update_pending_status = dce110_update_pending_status,
-	.set_gamma_correction = dce110_set_gamma_correction,
+	.set_input_transfer_func = dce110_set_degamma,
+	.set_output_transfer_func = dce110_set_output_transfer_func,
 	.power_down = dce110_power_down,
 	.enable_accelerated_mode = dce110_enable_accelerated_mode,
 	.enable_timing_synchronization = dce110_enable_timing_synchronization,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_types.h b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
index a67d675..c2d35c2 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/core_types.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
@@ -55,6 +55,9 @@ struct core_target {
 #define DC_GAMMA_TO_CORE(dc_gamma) \
 	container_of(dc_gamma, struct core_gamma, public)
 
+#define DC_TRANSFER_FUNC_TO_CORE(dc_transfer_func) \
+	container_of(dc_transfer_func, struct core_transfer_func, public)
+
 struct core_surface {
 	struct dc_surface public;
 	struct dc_surface_status status;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
index 89a0834..0e803ca 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
@@ -77,10 +77,15 @@ struct hw_sequencer_funcs {
 	void (*update_pending_status)(
 			struct pipe_ctx *pipe_ctx);
 
-	bool (*set_gamma_correction)(
+	bool (*set_input_transfer_func)(
 				struct pipe_ctx *pipe_ctx,
 				const struct core_surface *surface);
 
+	bool (*set_output_transfer_func)(
+				struct pipe_ctx *pipe_ctx,
+				const struct core_surface *surface,
+				const struct core_stream *stream);
+
 	void (*power_down)(struct core_dc *dc);
 
 	void (*enable_accelerated_mode)(struct core_dc *dc);
-- 
2.7.4