amdgpu: display: use modern ktime accessors

getrawmonotonic64() is deprecated because of the nonstandard naming.

The replacement functions ktime_get_raw_ns() also simplifies the callers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c

@@ -35,14 +35,6 @@
 #include "amdgpu_dm_irq.h"
 #include "amdgpu_pm.h"
 
-unsigned long long dm_get_timestamp(struct dc_context *ctx)
-{
-	struct timespec64 time;
-
-	getrawmonotonic64(&time);
-	return timespec64_to_ns(&time);
-}
-
 unsigned long long dm_get_elapse_time_in_ns(struct dc_context *ctx,
 		unsigned long long current_time_stamp,
 		unsigned long long last_time_stamp)

drivers/gpu/drm/amd/display/dc/dm_services.h

@@ -339,7 +339,10 @@ bool dm_dmcu_set_pipe(struct dc_context *ctx, unsigned int controller_id);
 #define dm_log_to_buffer(buffer, size, fmt, args)\
 	vsnprintf(buffer, size, fmt, args)
 
-unsigned long long dm_get_timestamp(struct dc_context *ctx);
+static inline unsigned long long dm_get_timestamp(struct dc_context *ctx)
+{
+	return ktime_get_raw_ns();
+}
 
 unsigned long long dm_get_elapse_time_in_ns(struct dc_context *ctx,
 		unsigned long long current_time_stamp,