[PATCH 12/18] drm/amd/display: update pixel rate div in enable stream

[Aurabindo Pillai]

From: Wenjing Liu <wenjing.liu at amd.com>

[why]
Pixel rate div depends on the type of encoder
that we are enabling stream with. If we swap between
HPO and DIO encoder at the time we call enable stream
for the new encoder, we must reprogram pixel rate div
based on the new encoder type.

Acked-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu at amd.com>
Reviewed-by: Jun Lei <Jun.Lei at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index c81b70c7f3f9..20c85ef2a957 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -2687,6 +2687,9 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 	struct dccg *dccg = dc->res_pool->dccg;
 	enum phyd32clk_clock_source phyd32clk;
 	int dp_hpo_inst;
+	struct dce_hwseq *hws = dc->hwseq;
+	unsigned int k1_div = PIXEL_RATE_DIV_NA;
+	unsigned int k2_div = PIXEL_RATE_DIV_NA;
 
 	if (is_dp_128b_132b_signal(pipe_ctx)) {
 		if (dc->hwseq->funcs.setup_hpo_hw_control)
@@ -2708,6 +2711,15 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 		dccg->funcs->set_dtbclk_dto(dccg, &dto_params);
 	}
 
+	if (hws->funcs.calculate_dccg_k1_k2_values && dc->res_pool->dccg->funcs->set_pixel_rate_div) {
+		hws->funcs.calculate_dccg_k1_k2_values(pipe_ctx, &k1_div, &k2_div);
+
+		dc->res_pool->dccg->funcs->set_pixel_rate_div(
+			dc->res_pool->dccg,
+			pipe_ctx->stream_res.tg->inst,
+			k1_div, k2_div);
+	}
+
 	link_hwss->setup_stream_encoder(pipe_ctx);
 
 	if (pipe_ctx->plane_state && pipe_ctx->plane_state->flip_immediate != 1) {
-- 
2.39.0