logger_types.h defines many DC_LOG_*() categorized debug wrappers.
Many of these use DRM_DEBUG_*, so are controllable using drm.debug,
but others use bare pr_debug()s, each with a different class-prefix
matching "^[\w+]:"
Use DYNDBG_BITMAP_DESC() to create a parameter/debug_dc, and to define
bits to control those pr_debugs by their category.
Signed-off-by: Jim Cromie <jim.cromie@xxxxxxxxx>
---
.../gpu/drm/amd/display/dc/core/dc_debug.c | 42 ++++++++++++++++++-
1 file changed, 41 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..3041e0c3d726 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 +36,48 @@
#include "resource.h"
-#define DC_LOGGER_INIT(logger)
+/* define a drm.debug style dyndbg pr-debug control point */
+unsigned long __debug_dc;
+EXPORT_SYMBOL(__debug_dc);
+
+#define _help(key) "\t\t" key " : help for " key "\n"
+#define cmd_help(key) { .prefix = key, .help = "help for " key }
+
+/* Id like to do these inside DEFINE_DYNDBG_BITMAP, later */
+#define MY_DYNDBG_PARM_DESC(name) \
+ "Enable debug output via /sys/module/amdgpu/parameters/" #name \
+ ", where each bit enables 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]:")
+MODULE_PARM_DESC(debug_dc, MY_DYNDBG_PARM_DESC(name));
+
+DEFINE_DYNDBG_BITMAP(debug_dc, &__debug_dc,
+ MY_DYNDBG_PARM_DESC(debug_dc),
+ cmd_help("[CURSOR]:"),
+ cmd_help("[PFLIP]:"),
+ cmd_help("[VBLANK]:"),
+ cmd_help("[HW_LINK_TRAINING]:"),
+ cmd_help("[HW_AUDIO]:"),
+ cmd_help("[SCALER]:"),
+ cmd_help("[BIOS]:"),
+ cmd_help("[BANDWIDTH_CALCS]:"),
+ cmd_help("[DML]:"),
+ cmd_help("[IF_TRACE]:"),
+ cmd_help("[GAMMA]:"),
+ cmd_help("[SMU_MSG]:"));
+#define DC_LOGGER_INIT(logger)
#define SURFACE_TRACE(...) do {\
if (dc->debug.surface_trace) \
--
2.31.1
