drm/amd/display: reprogram det size while seamless boot

[Why]
During system boot in second screen only mode on a seamless boot system,
there is a chance that the pipe's det size might not be reset.

[How]
Reset the det size while resetting the pipe during seamless boot.
Reviewed-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Hugo Hu <hugo.hu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hubbub.c

@@ -109,6 +109,28 @@ static void dcn31_program_det_size(struct hubbub *hubbub, int hubp_inst, unsigne
 			+ hubbub2->det3_size + hubbub2->compbuf_size_segments <= hubbub2->crb_size_segs);
 }
 
+static void dcn31_wait_for_det_apply(struct hubbub *hubbub, int hubp_inst)
+{
+	struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub);
+
+	switch (hubp_inst) {
+	case 0:
+		REG_WAIT(DCHUBBUB_DET0_CTRL, DET0_SIZE_CURRENT, hubbub2->det0_size, 1000, 30);
+		break;
+	case 1:
+		REG_WAIT(DCHUBBUB_DET1_CTRL, DET1_SIZE_CURRENT, hubbub2->det1_size, 1000, 30);
+		break;
+	case 2:
+		REG_WAIT(DCHUBBUB_DET2_CTRL, DET2_SIZE_CURRENT, hubbub2->det2_size, 1000, 30);
+		break;
+	case 3:
+		REG_WAIT(DCHUBBUB_DET3_CTRL, DET3_SIZE_CURRENT, hubbub2->det3_size, 1000, 30);
+		break;
+	default:
+		break;
+	}
+}
+
 static void dcn31_program_compbuf_size(struct hubbub *hubbub, unsigned int compbuf_size_kb, bool safe_to_increase)
 {
 	struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub);
@@ -1041,6 +1063,7 @@ static const struct hubbub_funcs hubbub31_funcs = {
 	.is_allow_self_refresh_enabled = hubbub1_is_allow_self_refresh_enabled,
 	.verify_allow_pstate_change_high = hubbub31_verify_allow_pstate_change_high,
 	.program_det_size = dcn31_program_det_size,
+	.wait_for_det_apply = dcn31_wait_for_det_apply,
 	.program_compbuf_size = dcn31_program_compbuf_size,
 	.init_crb = dcn31_init_crb,
 	.hubbub_read_state = hubbub2_read_state,

drivers/gpu/drm/amd/display/dc/hwss/dcn31/dcn31_hwseq.c

@@ -584,6 +584,15 @@ void dcn31_reset_hw_ctx_wrap(
 				pipe_need_reprogram(pipe_ctx_old, pipe_ctx)) {
 			struct clock_source *old_clk = pipe_ctx_old->clock_source;
 
+			/* Reset pipe which is seamless boot stream. */
+			if (!pipe_ctx_old->plane_state) {
+				dc->res_pool->hubbub->funcs->program_det_size(
+					dc->res_pool->hubbub, pipe_ctx_old->plane_res.hubp->inst, 0);
+				/* Wait det size changed. */
+				dc->res_pool->hubbub->funcs->wait_for_det_apply(
+					dc->res_pool->hubbub, pipe_ctx_old->plane_res.hubp->inst);
+			}
+
 			dcn31_reset_back_end_for_pipe(dc, pipe_ctx_old, dc->current_state);
 			if (hws->funcs.enable_stream_gating)
 				hws->funcs.enable_stream_gating(dc, pipe_ctx_old);

drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h

@@ -188,6 +188,7 @@ struct hubbub_funcs {
 	 * compressed or detiled buffers.
 	 */
 	void (*program_det_size)(struct hubbub *hubbub, int hubp_inst, unsigned det_buffer_size_in_kbyte);
+	void (*wait_for_det_apply)(struct hubbub *hubbub, int hubp_inst);
 	void (*program_compbuf_size)(struct hubbub *hubbub, unsigned compbuf_size_kb, bool safe_to_increase);
 	void (*init_crb)(struct hubbub *hubbub);
 	void (*force_usr_retraining_allow)(struct hubbub *hubbub, bool allow);