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      1 /*	$NetBSD: amdgpu_dm_services.c,v 1.2 2021/12/18 23:45:00 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2015 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_dm_services.c,v 1.2 2021/12/18 23:45:00 riastradh Exp $");
     30 
     31 #include <linux/string.h>
     32 #include <linux/acpi.h>
     33 
     34 #include <drm/drm_probe_helper.h>
     35 #include <drm/amdgpu_drm.h>
     36 #include "dm_services.h"
     37 #include "amdgpu.h"
     38 #include "amdgpu_dm.h"
     39 #include "amdgpu_dm_irq.h"
     40 #include "amdgpu_pm.h"
     41 
     42 
     43 
     44 unsigned long long dm_get_elapse_time_in_ns(struct dc_context *ctx,
     45 		unsigned long long current_time_stamp,
     46 		unsigned long long last_time_stamp)
     47 {
     48 	return current_time_stamp - last_time_stamp;
     49 }
     50 
     51 void dm_perf_trace_timestamp(const char *func_name, unsigned int line)
     52 {
     53 }
     54 
     55 bool dm_write_persistent_data(struct dc_context *ctx,
     56 		const struct dc_sink *sink,
     57 		const char *module_name,
     58 		const char *key_name,
     59 		void *params,
     60 		unsigned int size,
     61 		struct persistent_data_flag *flag)
     62 {
     63 	/*TODO implement*/
     64 	return false;
     65 }
     66 
     67 bool dm_read_persistent_data(struct dc_context *ctx,
     68 				const struct dc_sink *sink,
     69 				const char *module_name,
     70 				const char *key_name,
     71 				void *params,
     72 				unsigned int size,
     73 				struct persistent_data_flag *flag)
     74 {
     75 	/*TODO implement*/
     76 	return false;
     77 }
     78 
     79 /**** power component interfaces ****/
     80 
     81