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/drmP.h> 30 #include <drm/drm_probe_helper.h> 31 #include <drm/amdgpu_drm.h> 32 #include "dm_services.h" 33 #include "amdgpu.h" 34 #include "amdgpu_dm.h" 35 #include "amdgpu_dm_irq.h" 36 #include "amdgpu_pm.h" 37 38 39 40 unsigned long long dm_get_elapse_time_in_ns(struct dc_context *ctx, 41 unsigned long long current_time_stamp, 42 unsigned long long last_time_stamp) 43 { 44 return current_time_stamp - last_time_stamp; 45 } 46 47 void dm_perf_trace_timestamp(const char *func_name, unsigned int line) 48 { 49 } 50 51 bool dm_write_persistent_data(struct dc_context *ctx, 52 const struct dc_sink *sink, 53 const char *module_name, 54 const char *key_name, 55 void *params, 56 unsigned int size, 57 struct persistent_data_flag *flag) 58 { 59 /*TODO implement*/ 60 return false; 61 } 62 63 bool dm_read_persistent_data(struct dc_context *ctx, 64 const struct dc_sink *sink, 65 const char *module_name, 66 const char *key_name, 67 void *params, 68 unsigned int size, 69 struct persistent_data_flag *flag) 70 { 71 /*TODO implement*/ 72 return false; 73 } 74 75 /**** power component interfaces ****/ 76 77