LXR linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm

   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
  37
  38
  39unsigned long long 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
  46void dm_perf_trace_timestamp(const char *func_name, unsigned int line)
  47{
  48}
  49
  50bool dm_write_persistent_data(struct dc_context *ctx,
  51                const struct dc_sink *sink,
  52                const char *module_name,
  53                const char *key_name,
  54                void *params,
  55                unsigned int size,
  56                struct persistent_data_flag *flag)
  57{
  58        /*TODO implement*/
  59        return false;
  60}
  61
  62bool dm_read_persistent_data(struct dc_context *ctx,
  63                                const struct dc_sink *sink,
  64                                const char *module_name,
  65                                const char *key_name,
  66                                void *params,
  67                                unsigned int size,
  68                                struct persistent_data_flag *flag)
  69{
  70        /*TODO implement*/
  71        return false;
  72}
  73
  74/**** power component interfaces ****/
  75
  76