drm/amd/display: Add DCC/Tiling reset helper for DCN and DCE

This commit introduces a function helper for resetting DCN/DCE DCC and
tiling. Those functions are generic for their respective DCN/DCE, so
they were added to the oldest version of each architecture.

Reviewed-by: Alvin Lee <[email protected]>
Signed-off-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Roman Li <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: Rodrigo Siqueira

drivers/gpu/drm/amd/display/dc/hwss/dce100/dce100_hwseq.c

@@ -140,3 +140,32 @@ void dce100_hw_sequencer_construct(struct dc *dc)
 	dc->hwss.optimize_bandwidth = dce100_optimize_bandwidth;
 }
 
+/**
+ * dce100_reset_surface_dcc_and_tiling - Set DCC and tiling in DCE to their disable mode.
+ *
+ * @pipe_ctx: Pointer to the pipe context structure.
+ * @plane_state: Surface state
+ * @clear_tiling: If true set tiling to Linear, otherwise does not change tiling
+ *
+ * This function is responsible for call the HUBP block to disable DCC and set
+ * tiling to the linear mode.
+ */
+void dce100_reset_surface_dcc_and_tiling(struct pipe_ctx *pipe_ctx,
+					struct dc_plane_state *plane_state,
+					bool clear_tiling)
+{
+	struct mem_input *mi = pipe_ctx->plane_res.mi;
+
+	if (!mi)
+		return;
+
+	/* if framebuffer is tiled, disable tiling */
+	if (clear_tiling && mi->funcs->mem_input_clear_tiling)
+		mi->funcs->mem_input_clear_tiling(mi);
+
+	/* force page flip to see the new content of the framebuffer */
+	mi->funcs->mem_input_program_surface_flip_and_addr(mi,
+							   &plane_state->address,
+							   true);
+}
+

drivers/gpu/drm/amd/display/dc/hwss/dce100/dce100_hwseq.h

@@ -46,5 +46,9 @@ bool dce100_enable_display_power_gating(struct dc *dc, uint8_t controller_id,
 					struct dc_bios *dcb,
 					enum pipe_gating_control power_gating);
 
+void dce100_reset_surface_dcc_and_tiling(struct pipe_ctx *pipe_ctx,
+					struct dc_plane_state *plane_state,
+					bool clear_tiling);
+
 #endif /* __DC_HWSS_DCE100_H__ */
 

drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.c

@@ -3920,3 +3920,32 @@ void dcn10_get_dcc_en_bits(struct dc *dc, int *dcc_en_bits)
 			dcc_en_bits[i] = s->dcc_en ? 1 : 0;
 	}
 }
+
+/**
+ * dcn10_reset_surface_dcc_and_tiling - Set DCC and tiling in DCN to their disable mode.
+ *
+ * @pipe_ctx: Pointer to the pipe context structure.
+ * @plane_state: Surface state
+ * @clear_tiling: If true set tiling to Linear, otherwise does not change tiling
+ *
+ * This function is responsible for call the HUBP block to disable DCC and set
+ * tiling to the linear mode.
+ */
+void dcn10_reset_surface_dcc_and_tiling(struct pipe_ctx *pipe_ctx,
+					struct dc_plane_state *plane_state,
+					bool clear_tiling)
+{
+	struct hubp *hubp = pipe_ctx->plane_res.hubp;
+
+	if (!hubp)
+		return;
+
+	/* if framebuffer is tiled, disable tiling */
+	if (clear_tiling && hubp->funcs->hubp_clear_tiling)
+		hubp->funcs->hubp_clear_tiling(hubp);
+
+	/* force page flip to see the new content of the framebuffer */
+	hubp->funcs->hubp_program_surface_flip_and_addr(hubp,
+							&plane_state->address,
+							true);
+}

drivers/gpu/drm/amd/display/dc/hwss/dcn10/dcn10_hwseq.h

@@ -207,4 +207,8 @@ void dcn10_update_visual_confirm_color(
 		struct pipe_ctx *pipe_ctx,
 		int mpcc_id);
 
+void dcn10_reset_surface_dcc_and_tiling(struct pipe_ctx *pipe_ctx,
+					struct dc_plane_state *plane_state,
+					bool clear_tiling);
+
 #endif /* __DC_HWSS_DCN10_H__ */