drm/amd/display: Fix check for setting input TF

We no longer change the plane state pointer for full updates, and as
such, we weren't setting the input transfer function and programming the
degamma registers when we are supposed to. Check for a full update, an
input TF change, or a gamma change in the update flags instead to correct
this.
Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -29,6 +29,7 @@
 #include "core_status.h"
 #include "core_types.h"
 #include "hw_sequencer.h"
+#include "dce/dce_hwseq.h"
 
 #include "resource.h"
 
@@ -995,6 +996,9 @@ static enum surface_update_type get_plane_info_update_type(const struct dc_surfa
 		 */
 		update_flags->bits.bpp_change = 1;
 
+	if (u->gamma && dce_use_lut(u->plane_info->format))
+		update_flags->bits.gamma_change = 1;
+
 	if (memcmp(&u->plane_info->tiling_info, &u->surface->tiling_info,
 			sizeof(union dc_tiling_info)) != 0) {
 		update_flags->bits.swizzle_change = 1;
@@ -1010,6 +1014,7 @@ static enum surface_update_type get_plane_info_update_type(const struct dc_surfa
 
 	if (update_flags->bits.rotation_change
 			|| update_flags->bits.stereo_format_change
+			|| update_flags->bits.gamma_change
 			|| update_flags->bits.bpp_change
 			|| update_flags->bits.bandwidth_change)
 		return UPDATE_TYPE_FULL;
@@ -1090,12 +1095,12 @@ static enum surface_update_type det_surface_update(const struct dc *dc,
 	elevate_update_type(&overall_type, type);
 
 	if (u->in_transfer_func)
-		update_flags->bits.in_transfer_func = 1;
+		update_flags->bits.in_transfer_func_change = 1;
 
 	if (u->input_csc_color_matrix)
 		update_flags->bits.input_csc_change = 1;
 
-	if (update_flags->bits.in_transfer_func
+	if (update_flags->bits.in_transfer_func_change
 			|| update_flags->bits.input_csc_change) {
 		type = UPDATE_TYPE_MED;
 		elevate_update_type(&overall_type, type);

drivers/gpu/drm/amd/display/dc/dc.h

@@ -395,12 +395,13 @@ union surface_update_flags {
 		uint32_t swizzle_change:1;
 		uint32_t scaling_change:1;
 		uint32_t position_change:1;
-		uint32_t in_transfer_func:1;
+		uint32_t in_transfer_func_change:1;
 		uint32_t input_csc_change:1;
 
 		/* Full updates */
 		uint32_t new_plane:1;
 		uint32_t bpp_change:1;
+		uint32_t gamma_change:1;
 		uint32_t bandwidth_change:1;
 		uint32_t clock_change:1;
 		uint32_t stereo_format_change:1;

drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.c

@@ -197,9 +197,9 @@ void dce_crtc_switch_to_clk_src(struct dce_hwseq *hws,
 }
 
 /* Only use LUT for 8 bit formats */
-bool dce_use_lut(const struct dc_plane_state *plane_state)
+bool dce_use_lut(enum surface_pixel_format format)
 {
-	switch (plane_state->format) {
+	switch (format) {
 	case SURFACE_PIXEL_FORMAT_GRPH_ARGB8888:
 	case SURFACE_PIXEL_FORMAT_GRPH_ABGR8888:
 		return true;

drivers/gpu/drm/amd/display/dc/dce/dce_hwseq.h

@@ -607,5 +607,5 @@ void dce_crtc_switch_to_clk_src(struct dce_hwseq *hws,
 		struct clock_source *clk_src,
 		unsigned int tg_inst);
 
-bool dce_use_lut(const struct dc_plane_state *plane_state);
+bool dce_use_lut(enum surface_pixel_format format);
 #endif   /*__DCE_HWSEQ_H__*/

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -275,7 +275,7 @@ dce110_set_input_transfer_func(struct pipe_ctx *pipe_ctx,
 	build_prescale_params(&prescale_params, plane_state);
 	ipp->funcs->ipp_program_prescale(ipp, &prescale_params);
 
-	if (plane_state->gamma_correction && dce_use_lut(plane_state))
+	if (plane_state->gamma_correction && dce_use_lut(plane_state->format))
 		ipp->funcs->ipp_program_input_lut(ipp, plane_state->gamma_correction);
 
 	if (tf == NULL) {
@@ -2648,7 +2648,6 @@ static void dce110_program_front_end_for_pipe(
 	struct dc_plane_state *plane_state = pipe_ctx->plane_state;
 	struct xfm_grph_csc_adjustment adjust;
 	struct out_csc_color_matrix tbl_entry;
-	struct pipe_ctx *cur_pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[pipe_ctx->pipe_idx];
 	unsigned int i;
 
 	memset(&tbl_entry, 0, sizeof(tbl_entry));
@@ -2717,10 +2716,13 @@ static void dce110_program_front_end_for_pipe(
 				plane_state->rotation);
 
 	/* Moved programming gamma from dc to hwss */
-	if (cur_pipe_ctx->plane_state != pipe_ctx->plane_state) {
+	if (pipe_ctx->plane_state->update_flags.bits.full_update ||
+			pipe_ctx->plane_state->update_flags.bits.in_transfer_func_change ||
+			pipe_ctx->plane_state->update_flags.bits.gamma_change)
 		dc->hwss.set_input_transfer_func(pipe_ctx, pipe_ctx->plane_state);
+
+	if (pipe_ctx->plane_state->update_flags.bits.full_update)
 		dc->hwss.set_output_transfer_func(pipe_ctx, pipe_ctx->stream);
-	}
 
 	dm_logger_write(dc->ctx->logger, LOG_SURFACE,
 			"Pipe:%d 0x%x: addr hi:0x%x, "

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -925,7 +925,7 @@ static bool dcn10_set_input_transfer_func(struct pipe_ctx *pipe_ctx,
 	if (plane_state->in_transfer_func)
 		tf = plane_state->in_transfer_func;
 
-	if (plane_state->gamma_correction && dce_use_lut(plane_state))
+	if (plane_state->gamma_correction && dce_use_lut(plane_state->format))
 		dpp_base->funcs->dpp_program_input_lut(dpp_base, plane_state->gamma_correction);
 
 	if (tf == NULL)
@@ -1800,15 +1800,14 @@ static void program_all_pipe_in_tree(
 	}
 
 	if (pipe_ctx->plane_state != NULL) {
-		struct pipe_ctx *cur_pipe_ctx =
-				&dc->current_state->res_ctx.pipe_ctx[pipe_ctx->pipe_idx];
-
 		if (pipe_ctx->plane_state->update_flags.bits.full_update)
 			dcn10_enable_plane(dc, pipe_ctx, context);
 
 		update_dchubp_dpp(dc, pipe_ctx, context);
 
-		if (cur_pipe_ctx->plane_state != pipe_ctx->plane_state)
+		if (pipe_ctx->plane_state->update_flags.bits.full_update ||
+				pipe_ctx->plane_state->update_flags.bits.in_transfer_func_change ||
+				pipe_ctx->plane_state->update_flags.bits.gamma_change)
 			dc->hwss.set_input_transfer_func(pipe_ctx, pipe_ctx->plane_state);
 
 		/* dcn10_translate_regamma_to_hw_format takes 750us to finish