[PATCH 15/21] drm/amd/display: Update Interface to Check UCLK DPM

[Aurabindo Pillai]

From: Austin Zheng <Austin.Zheng at amd.com>

[Why]
Videos using YUV420 format may result in high power being used.
Disabling MPO may result in lower power usage.
Update interface that can be used to check power profile of a dc_state.

[How]
Allow pstate switching in VBlank as last entry in strategy candidates.
Add helper functions that can be used to determine power level:
-get power profile after a dc_state has undergone full validation

Reviewed-by: Aric Cyr <aric.cyr at amd.com>
Signed-off-by: Austin Zheng <Austin.Zheng at amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c        |  9 ++++++++-
 .../dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c    |  1 +
 drivers/gpu/drm/amd/display/dc/inc/core_types.h |  4 ++++
 .../dc/resource/dcn315/dcn315_resource.c        |  6 ++++++
 .../dc/resource/dcn401/dcn401_resource.c        | 17 +++++++++++++++++
 5 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 98b94415e86c..024d2d0bf457 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -6018,8 +6018,15 @@ void dc_set_edp_power(const struct dc *dc, struct dc_link *edp_link,
 struct dc_power_profile dc_get_power_profile_for_dc_state(const struct dc_state *context)
 {
 	struct dc_power_profile profile = { 0 };
+	struct dc *dc = NULL;
 
-	profile.power_level += !context->bw_ctx.bw.dcn.clk.p_state_change_support;
+	if (!context || !context->clk_mgr || !context->clk_mgr->ctx || !context->clk_mgr->ctx->dc)
+		return profile;
+
+	dc = context->clk_mgr->ctx->dc;
+
+	if (dc->res_pool->funcs->get_power_profile)
+		profile.power_level = dc->res_pool->funcs->get_power_profile(context);
 
 	return profile;
 }
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c
index 1cf9015e854a..2e9c59e9e0c1 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c
@@ -1798,6 +1798,7 @@ bool pmo_dcn4_fams2_init_for_pstate_support(struct dml2_pmo_init_for_pstate_supp
 	}
 
 	if (s->pmo_dcn4.num_pstate_candidates > 0) {
+		s->pmo_dcn4.pstate_strategy_candidates[s->pmo_dcn4.num_pstate_candidates-1].allow_state_increase = true;
 		s->pmo_dcn4.cur_pstate_candidate = -1;
 		return true;
 	} else {
diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_types.h b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
index bfb8b8502d20..8597e866bfe6 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/core_types.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
@@ -215,6 +215,10 @@ struct resource_funcs {
 
 	void (*get_panel_config_defaults)(struct dc_panel_config *panel_config);
 	void (*build_pipe_pix_clk_params)(struct pipe_ctx *pipe_ctx);
+	/*
+	 * Get indicator of power from a context that went through full validation
+	 */
+	int (*get_power_profile)(const struct dc_state *context);
 };
 
 struct audio_support{
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c
index 3f4b9dba4112..f6b840f046a5 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn315/dcn315_resource.c
@@ -1812,6 +1812,11 @@ static void dcn315_get_panel_config_defaults(struct dc_panel_config *panel_confi
 	*panel_config = panel_config_defaults;
 }
 
+static int dcn315_get_power_profile(const struct dc_state *context)
+{
+	return !context->bw_ctx.bw.dcn.clk.p_state_change_support;
+}
+
 static struct dc_cap_funcs cap_funcs = {
 	.get_dcc_compression_cap = dcn20_get_dcc_compression_cap
 };
@@ -1840,6 +1845,7 @@ static struct resource_funcs dcn315_res_pool_funcs = {
 	.update_bw_bounding_box = dcn315_update_bw_bounding_box,
 	.patch_unknown_plane_state = dcn20_patch_unknown_plane_state,
 	.get_panel_config_defaults = dcn315_get_panel_config_defaults,
+	.get_power_profile = dcn315_get_power_profile,
 };
 
 static bool dcn315_resource_construct(
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
index f2653a86d3e7..59184abab1a7 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
@@ -1688,6 +1688,22 @@ static void dcn401_build_pipe_pix_clk_params(struct pipe_ctx *pipe_ctx)
 	}
 }
 
+static int dcn401_get_power_profile(const struct dc_state *context)
+{
+	int uclk_mhz = context->bw_ctx.bw.dcn.clk.dramclk_khz / 1000;
+	int dpm_level = 0;
+
+	for (int i = 0; i < context->clk_mgr->bw_params->clk_table.num_entries_per_clk.num_memclk_levels; i++) {
+		if (context->clk_mgr->bw_params->clk_table.entries[i].memclk_mhz == 0 ||
+			uclk_mhz < context->clk_mgr->bw_params->clk_table.entries[i].memclk_mhz)
+			break;
+		if (uclk_mhz > context->clk_mgr->bw_params->clk_table.entries[i].memclk_mhz)
+			dpm_level++;
+	}
+
+	return dpm_level;
+}
+
 static struct resource_funcs dcn401_res_pool_funcs = {
 	.destroy = dcn401_destroy_resource_pool,
 	.link_enc_create = dcn401_link_encoder_create,
@@ -1714,6 +1730,7 @@ static struct resource_funcs dcn401_res_pool_funcs = {
 	.prepare_mcache_programming = dcn401_prepare_mcache_programming,
 	.build_pipe_pix_clk_params = dcn401_build_pipe_pix_clk_params,
 	.calculate_mall_ways_from_bytes = dcn32_calculate_mall_ways_from_bytes,
+	.get_power_profile = dcn401_get_power_profile,
 };
 
 static uint32_t read_pipe_fuses(struct dc_context *ctx)
-- 
2.46.0