From: Tony Cheng <tony.ch...@amd.com>

Change-Id: I90ddf8918dcfa60d1dd468f8c1ba9dc59806cb70
Signed-off-by: Tony Cheng <tony.ch...@amd.com>
Reviewed-by: Wesley Chalmers <wesley.chalm...@amd.com>
Acked-by: Harry Wentland <harry.wentl...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc.c                  |  7 +++++++
 drivers/gpu/drm/amd/display/dc/dc.h                       |  2 ++
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 12 ++++++++++++
 drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h         |  2 ++
 drivers/gpu/drm/amd/display/include/logger_interface.h    |  4 ++++
 5 files changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c 
b/drivers/gpu/drm/amd/display/dc/core/dc.c
index eda36c7a5c57..ad1b90563eb6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2035,3 +2035,10 @@ bool dc_init_dchub(struct dc *dc, struct dchub_init_data 
*dh_data)
 
 }
 
+void dc_log_hw_state(struct dc *dc)
+{
+       struct core_dc *core_dc = DC_TO_CORE(dc);
+
+       if (core_dc->hwss.log_hw_state)
+               core_dc->hwss.log_hw_state(core_dc);
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h 
b/drivers/gpu/drm/amd/display/dc/dc.h
index 7ecbff792e66..7b8e11c28c62 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -236,6 +236,8 @@ void dc_destroy(struct dc **dc);
 
 bool dc_init_dchub(struct dc *dc, struct dchub_init_data *dh_data);
 
+void dc_log_hw_state(struct dc *dc);
+
 
/*******************************************************************************
  * Surface Interfaces
  
******************************************************************************/
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c 
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 6543027469af..c0aa32b71ad1 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -1851,6 +1851,17 @@ static void dcn10_setup_stereo(struct pipe_ctx 
*pipe_ctx, struct core_dc *dc)
        return;
 }
 
+static void dcn10_log_hw_state(struct core_dc *dc)
+{
+       struct dc_context *dc_ctx = dc->ctx;
+
+       DTN_INFO("%s: Hello World", __func__);
+
+       /* todo: add meaningful register reads and print out HW state
+        *
+        */
+}
+
 static bool dcn10_dummy_display_power_gating(
        struct core_dc *dc,
        uint8_t controller_id,
@@ -1887,6 +1898,7 @@ static const struct hw_sequencer_funcs dcn10_funcs = {
        .set_static_screen_control = set_static_screen_control,
        .setup_stereo = dcn10_setup_stereo,
        .set_avmute = dce110_set_avmute,
+       .log_hw_state = dcn10_log_hw_state,
 };
 
 
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h 
b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
index d94e8e446ce5..4c027a98cfd3 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
@@ -154,6 +154,8 @@ struct hw_sequencer_funcs {
                        struct core_dc *dc);
 
        void (*set_avmute)(struct pipe_ctx *pipe_ctx, bool enable);
+
+       void (*log_hw_state)(struct core_dc *dc);
 };
 
 void color_space_to_black_color(
diff --git a/drivers/gpu/drm/amd/display/include/logger_interface.h 
b/drivers/gpu/drm/amd/display/include/logger_interface.h
index ce5fef243b09..c861e726cd8f 100644
--- a/drivers/gpu/drm/amd/display/include/logger_interface.h
+++ b/drivers/gpu/drm/amd/display/include/logger_interface.h
@@ -123,6 +123,10 @@ void context_clock_trace(
        dm_logger_write(dc_ctx->logger, LOG_ERROR, \
                __VA_ARGS__);
 
+#define DTN_INFO(...) \
+       dm_logger_write(dc_ctx->logger, LOG_DTN, \
+               __VA_ARGS__)
+
 #define DC_SYNC_INFO(...) \
        dm_logger_write(dc_ctx->logger, LOG_SYNC, \
                __VA_ARGS__);
-- 
2.11.0

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