From: George Shen <george.shen@amd.com>
Date: Mon, 6 Oct 2025 15:23:31 +0000 (-0400)
Subject: drm/amd/display: Add interface to capture power feature status for debug logging
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f64ec952d2cdf260714279cdf619a6b363faba33;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/display: Add interface to capture power feature status for debug logging

[Why]
The status of various power features is often important information when
debugging certain issues, such as underflow. This info helps to
narrow down the potential sources of errors.

[How]
Add dc interface to capture power feature enablement status.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index f519e5893a68a..5e79962c5f2bd 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -6421,6 +6421,13 @@ void dc_get_underflow_debug_data_for_otg(struct dc *dc, int primary_otg_inst,
 		dc->hwss.get_underflow_debug_data(dc, tg, out_data);
 }
 
+void dc_get_power_feature_status(struct dc *dc, int primary_otg_inst,
+				struct power_features *out_data)
+{
+	out_data->uclk_p_state = dc->current_state->clk_mgr->clks.p_state_change_support;
+	out_data->fams = dc->current_state->bw_ctx.bw.dcn.clk.fw_based_mclk_switching;
+}
+
 void dc_log_preos_dmcub_info(const struct dc *dc)
 {
 	dc_dmub_srv_log_preos_dmcub_info(dc->ctx->dmub_srv);
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 75b25b2506a87..29805428fe937 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1865,6 +1865,18 @@ struct dc_underflow_debug_data {
 	struct dcn_dccg_reg_state *dccg_reg_state[MAX_PIPES];
 };
 
+struct power_features {
+	bool ips;
+	bool rcg;
+	bool replay;
+	bool dds;
+	bool sprs;
+	bool psr;
+	bool fams;
+	bool mpo;
+	bool uclk_p_state;
+};
+
 /*
  * Create a new surface with default parameters;
  */
@@ -2772,4 +2784,6 @@ bool dc_can_clear_cursor_limit(const struct dc *dc);
  */
 void dc_get_underflow_debug_data_for_otg(struct dc *dc, int primary_otg_inst, struct dc_underflow_debug_data *out_data);
 
+void dc_get_power_feature_status(struct dc *dc, int primary_otg_inst, struct power_features *out_data);
+
 #endif /* DC_INTERFACE_H_ */