drm/amd/display: add new pixel rate programming

[why]
New dividers in DCCG need to be programmed depending
on encoder/stream type since pixels per clock in
OTG/DIO is different

DIO also needs additional programming depending on
pixels per clock

Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.h

@@ -576,6 +576,7 @@ struct dcn10_stream_enc_registers {
 	type DP_SEC_GSP11_LINE_NUM
 
 #define SE_REG_FIELD_LIST_DCN3_2(type) \
+	type DIG_FIFO_OUTPUT_PIXEL_MODE;\
 	type DIG_SYMCLK_FE_ON;\
 	type DIG_FIFO_READ_START_LEVEL;\
 	type DIG_FIFO_ENABLE;\

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -661,7 +661,17 @@ enum dc_status dcn20_enable_stream_timing(
 	struct mpc_dwb_flow_control flow_control;
 	struct mpc *mpc = dc->res_pool->mpc;
 	bool rate_control_2x_pclk = (interlace || optc2_is_two_pixels_per_containter(&stream->timing));
+	unsigned int k1_div = PIXEL_RATE_DIV_NA;
+	unsigned int k2_div = PIXEL_RATE_DIV_NA;
 
+	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);
+	}
 	/* by upper caller loop, pipe0 is parent pipe and be called first.
 	 * back end is set up by for pipe0. Other children pipe share back end
 	 * with pipe 0. No program is needed.
@@ -2485,6 +2495,10 @@ void dcn20_enable_stream(struct pipe_ctx *pipe_ctx)
 
 	tg->funcs->set_early_control(tg, early_control);
 
+	if (pipe_ctx->stream_res.stream_enc->funcs->set_input_mode)
+		pipe_ctx->stream_res.stream_enc->funcs->set_input_mode(pipe_ctx->stream_res.stream_enc,
+			timing->pixel_encoding == PIXEL_ENCODING_YCBCR420 ? 2 : 1);
+
 	/* enable audio only within mode set */
 	if (pipe_ctx->stream_res.audio != NULL) {
 		if (is_dp_128b_132b_signal(pipe_ctx))

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c

@@ -272,6 +272,7 @@ static const struct dccg_funcs dccg32_funcs = {
 	.set_audio_dtbclk_dto = dccg31_set_audio_dtbclk_dto,
 	.otg_add_pixel = dccg32_otg_add_pixel,
 	.otg_drop_pixel = dccg32_otg_drop_pixel,
+	.set_pixel_rate_div = dccg32_set_pixel_rate_div,
 };
 
 struct dccg *dccg32_create(

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dio_stream_encoder.h

@@ -240,7 +240,8 @@
 	SE_SF(DIG0_DIG_FIFO_CTRL0, DIG_FIFO_READ_START_LEVEL, mask_sh),\
 	SE_SF(DIG0_DIG_FIFO_CTRL0, DIG_FIFO_ENABLE, mask_sh),\
 	SE_SF(DIG0_DIG_FIFO_CTRL0, DIG_FIFO_RESET, mask_sh),\
-	SE_SF(DIG0_DIG_FIFO_CTRL0, DIG_FIFO_RESET_DONE, mask_sh)
+	SE_SF(DIG0_DIG_FIFO_CTRL0, DIG_FIFO_RESET_DONE, mask_sh),\
+	SE_SF(DIG0_DIG_FIFO_CTRL0, DIG_FIFO_OUTPUT_PIXEL_MODE, mask_sh)
 
 #if defined(CONFIG_DRM_AMD_DC_HDCP)
 #define SE_COMMON_MASK_SH_LIST_DCN32(mask_sh)\

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c

@@ -47,6 +47,7 @@
 #include "clk_mgr.h"
 #include "dsc.h"
 #include "dcn20/dcn20_optc.h"
+#include "dc_link_dp.h"
 
 #define DC_LOGGER_INIT(logger)
 
@@ -836,20 +837,44 @@ static void update_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable)
 	}
 }
 
+/*
+* Given any pipe_ctx, return the total ODM combine factor, and optionally return
+* the OPPids which are used
+* */
+static unsigned int get_odm_config(struct pipe_ctx *pipe_ctx, unsigned int *opp_instances)
+{
+	unsigned int opp_count = 1;
+	struct pipe_ctx *odm_pipe;
+
+	/* First get to the top pipe */
+	for (odm_pipe = pipe_ctx; odm_pipe->prev_odm_pipe; odm_pipe = odm_pipe->prev_odm_pipe)
+		;
+
+	/* First pipe is always used */
+	if (opp_instances)
+		opp_instances[0] = odm_pipe->stream_res.opp->inst;
+
+	/* Find and count odm pipes, if any */
+	for (odm_pipe = odm_pipe->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) {
+		if (opp_instances)
+			opp_instances[opp_count] = odm_pipe->stream_res.opp->inst;
+		opp_count++;
+	}
+
+	return opp_count;
+}
+
 void dcn32_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx *pipe_ctx)
 {
 	struct pipe_ctx *odm_pipe;
-	int opp_cnt = 1;
-	int opp_inst[MAX_PIPES] = { pipe_ctx->stream_res.opp->inst };
+	int opp_cnt = 0;
+	int opp_inst[MAX_PIPES] = {0};
 	bool rate_control_2x_pclk = (pipe_ctx->stream->timing.flags.INTERLACE || optc2_is_two_pixels_per_containter(&pipe_ctx->stream->timing));
 	struct mpc_dwb_flow_control flow_control;
 	struct mpc *mpc = dc->res_pool->mpc;
 	int i;
 
-	for (odm_pipe = pipe_ctx->next_odm_pipe; odm_pipe; odm_pipe = odm_pipe->next_odm_pipe) {
-		opp_inst[opp_cnt] = odm_pipe->stream_res.opp->inst;
-		opp_cnt++;
-	}
+	opp_cnt = get_odm_config(pipe_ctx, opp_inst);
 
 	if (opp_cnt > 1)
 		pipe_ctx->stream_res.tg->funcs->set_odm_combine(
@@ -892,3 +917,38 @@ void dcn32_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx *
 		update_dsc_on_stream(pipe_ctx, pipe_ctx->stream->timing.flags.DSC);
 }
 
+unsigned int dcn32_calculate_dccg_k1_k2_values(struct pipe_ctx *pipe_ctx, unsigned int *k1_div, unsigned int *k2_div)
+{
+	struct dc_stream_state *stream = pipe_ctx->stream;
+	unsigned int odm_combine_factor = 0;
+
+	odm_combine_factor = get_odm_config(pipe_ctx, NULL);
+
+	if (is_dp_128b_132b_signal(pipe_ctx)) {
+		*k2_div = PIXEL_RATE_DIV_BY_1;
+	} else if (dc_is_hdmi_tmds_signal(pipe_ctx->stream->signal) || dc_is_dvi_signal(pipe_ctx->stream->signal)) {
+		*k1_div = PIXEL_RATE_DIV_BY_1;
+		if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR420)
+			*k2_div = PIXEL_RATE_DIV_BY_2;
+		else
+			*k2_div = PIXEL_RATE_DIV_BY_4;
+	} else if (dc_is_dp_signal(pipe_ctx->stream->signal)) {
+		if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR420) {
+			*k1_div = PIXEL_RATE_DIV_BY_1;
+			*k2_div = PIXEL_RATE_DIV_BY_2;
+		} else if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR422) {
+			*k1_div = PIXEL_RATE_DIV_BY_2;
+			*k2_div = PIXEL_RATE_DIV_BY_2;
+		} else {
+			if (odm_combine_factor == 1)
+				*k2_div = PIXEL_RATE_DIV_BY_4;
+			else if (odm_combine_factor == 2)
+				*k2_div = PIXEL_RATE_DIV_BY_2;
+		}
+	}
+
+	if ((*k1_div == PIXEL_RATE_DIV_NA) && (*k2_div == PIXEL_RATE_DIV_NA))
+		ASSERT(false);
+
+	return odm_combine_factor;
+}

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.h

@@ -61,4 +61,6 @@ void dcn32_subvp_update_force_pstate(struct dc *dc, struct dc_state *context);
 
 void dcn32_update_odm(struct dc *dc, struct dc_state *context, struct pipe_ctx *pipe_ctx);
 
+unsigned int dcn32_calculate_dccg_k1_k2_values(struct pipe_ctx *pipe_ctx, unsigned int *k1_div, unsigned int *k2_div);
+
 #endif /* __DC_HWSS_DCN32_H__ */

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_init.c

@@ -141,6 +141,7 @@ static const struct hwseq_private_funcs dcn32_private_funcs = {
 	.program_mall_pipe_config = dcn32_program_mall_pipe_config,
 	.subvp_update_force_pstate = dcn32_subvp_update_force_pstate,
 	.update_mall_sel = dcn32_update_mall_sel,
+	.calculate_dccg_k1_k2_values = dcn32_calculate_dccg_k1_k2_values,
 };
 
 void dcn32_hw_sequencer_init_functions(struct dc *dc)

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

@@ -59,7 +59,8 @@ enum dentist_dispclk_change_mode {
 enum pixel_rate_div {
    PIXEL_RATE_DIV_BY_1 = 0,
    PIXEL_RATE_DIV_BY_2 = 1,
-   PIXEL_RATE_DIV_BY_4 = 3
+   PIXEL_RATE_DIV_BY_4 = 3,
+   PIXEL_RATE_DIV_NA = 0xF
 };
 
 struct dccg {

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

@@ -247,6 +247,9 @@ struct stream_encoder_funcs {
 
 	uint32_t (*get_fifo_cal_average_level)(
 		struct stream_encoder *enc);
+
+	void (*set_input_mode)(
+		struct stream_encoder *enc, unsigned int pix_per_container);
 };
 
 struct hpo_dp_stream_encoder_state {

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

@@ -149,6 +149,9 @@ struct hwseq_private_funcs {
 	void (*program_mall_pipe_config)(struct dc *dc, struct dc_state *context);
 	void (*subvp_update_force_pstate)(struct dc *dc, struct dc_state *context);
 	void (*update_mall_sel)(struct dc *dc, struct dc_state *context);
+	unsigned int (*calculate_dccg_k1_k2_values)(struct pipe_ctx *pipe_ctx,
+			unsigned int *k1_div,
+			unsigned int *k2_div);
 #endif
 };