logger_types.h defines many DC_LOG_*() categorized debug wrappers.
Most of these use DRM debug API, so are controllable using drm.debug,
but others use bare pr_debug("$prefix: .."), each with a different
class-prefix matching "^\[\w+\]:"
Use DEFINE_DYNAMIC_DEBUG_CATEGORIES to create a /sys debug_dc
parameter, modinfos, and to specify a map from bits -> categorized
pr_debugs to be controlled.
Signed-off-by: Jim Cromie <jim.cromie@xxxxxxxxx>
---
.../gpu/drm/amd/display/dc/core/dc_debug.c | 44 ++++++++++++++++++-
1 file changed, 43 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c
index 21be2a684393..9fd43254db88 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c
@@ -36,8 +36,50 @@
#include "resource.h"
-#define DC_LOGGER_INIT(logger)
+#ifdef CONFIG_DRM_USE_DYNAMIC_DEBUG
+/* define a drm.debug style dyndbg pr-debug control point */
+#include <linux/dynamic_debug.h>
+
+unsigned long __debug_dc;
+EXPORT_SYMBOL(__debug_dc);
+
+#define _help_(key) "\t " key "\t- help for " key "\n"
+
+/* Id like to do these inside DEFINE_DYNAMIC_DEBUG_CATEGORIES, if possible */
+#define DC_DYNDBG_BITMAP_DESC(name) \
+ "Control pr_debugs via /sys/module/amdgpu/parameters/" #name \
+ ", where each bit controls a debug category.\n" \
+ _help_("[SURFACE]:") \
+ _help_("[CURSOR]:") \
+ _help_("[PFLIP]:") \
+ _help_("[VBLANK]:") \
+ _help_("[HW_LINK_TRAINING]:") \
+ _help_("[HW_AUDIO]:") \
+ _help_("[SCALER]:") \
+ _help_("[BIOS]:") \
+ _help_("[BANDWIDTH_CALCS]:") \
+ _help_("[DML]:") \
+ _help_("[IF_TRACE]:") \
+ _help_("[GAMMA]:") \
+ _help_("[SMU_MSG]:")
+
+DEFINE_DYNAMIC_DEBUG_CATEGORIES(debug_dc, __debug_dc,
+ DC_DYNDBG_BITMAP_DESC(debug_dc),
+ _DD_cat_("[CURSOR]:"),
+ _DD_cat_("[PFLIP]:"),
+ _DD_cat_("[VBLANK]:"),
+ _DD_cat_("[HW_LINK_TRAINING]:"),
+ _DD_cat_("[HW_AUDIO]:"),
+ _DD_cat_("[SCALER]:"),
+ _DD_cat_("[BIOS]:"),
+ _DD_cat_("[BANDWIDTH_CALCS]:"),
+ _DD_cat_("[DML]:"),
+ _DD_cat_("[IF_TRACE]:"),
+ _DD_cat_("[GAMMA]:"),
+ _DD_cat_("[SMU_MSG]:"));
+#endif
+#define DC_LOGGER_INIT(logger)
#define SURFACE_TRACE(...) do {\
if (dc->debug.surface_trace) \
--
2.31.1
