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

   1 /*
   2  * Copyright 2015 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: AMD
  23  *
  24  */
  25
  26 #include <linux/string.h>
  27 #include <linux/acpi.h>
  28
  29 #include <drm/drm_probe_helper.h>
  30 #include <drm/amdgpu_drm.h>
  31 #include "dm_services.h"
  32 #include "amdgpu.h"
  33 #include "amdgpu_dm.h"
  34 #include "amdgpu_dm_irq.h"
  35 #include "amdgpu_pm.h"
  36 #include "amdgpu_dm_trace.h"
  37
  38         unsigned long long
  39         dm_get_elapse_time_in_ns(struct dc_context *ctx,
  40                                  unsigned long long current_time_stamp,
  41                                  unsigned long long last_time_stamp)
  42 {
  43         return current_time_stamp - last_time_stamp;
  44 }
  45
  46 void dm_perf_trace_timestamp(const char *func_name, unsigned int line, struct dc_context *ctx)
  47 {
  48         trace_amdgpu_dc_performance(ctx->perf_trace->read_count,
  49                                     ctx->perf_trace->write_count,
  50                                     &ctx->perf_trace->last_entry_read,
  51                                     &ctx->perf_trace->last_entry_write,
  52                                     func_name, line);
  53 }
  54
  55 /**** power component interfaces ****/