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

//SPDX-License-Identifier: MIT
/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#include <linux/string.h>
#include <linux/acpi.h>

#include <drm/drm_probe_helper.h>
#include <drm/amdgpu_drm.h>
#include "dm_services.h"
#include "amdgpu.h"
#include "amdgpu_dm.h"
#include "amdgpu_dm_backlight.h"
#include "amdgpu_dm_irq.h"
#include "amdgpu_pm.h"
#include "amdgpu_dm_trace.h"
#include "dm_helpers.h"

	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)
{
	return current_time_stamp - last_time_stamp;
}
EXPORT_IF_KUNIT(dm_get_elapse_time_in_ns);

void dm_perf_trace_timestamp(const char *func_name, unsigned int line, struct dc_context *ctx)
{
	trace_amdgpu_dc_performance(ctx->perf_trace->read_count,
				    ctx->perf_trace->write_count,
				    &ctx->perf_trace->last_entry_read,
				    &ctx->perf_trace->last_entry_write,
				    func_name, line);
}
EXPORT_IF_KUNIT(dm_perf_trace_timestamp);

void dm_trace_smu_enter(uint32_t msg_id, uint32_t param_in, unsigned int delay, struct dc_context *ctx)
{
}
EXPORT_IF_KUNIT(dm_trace_smu_enter);

void dm_trace_smu_exit(bool success, uint32_t response, struct dc_context *ctx)
{
}
EXPORT_IF_KUNIT(dm_trace_smu_exit);

/**** power component interfaces ****/

bool dm_query_extended_brightness_caps(struct dc_context *ctx,
	enum dm_acpi_display_type display, struct dm_acpi_atif_backlight_caps *pCaps)
{
	struct amdgpu_device *adev;
	struct amdgpu_display_manager *dm;
	int bl_index = (display == AcpiDisplayType_LCD1) ? 0 : 1;

	if (!ctx || !pCaps || !ctx->driver_context)
		return false;

	adev = (struct amdgpu_device *)ctx->driver_context;
	dm = &adev->dm;

	amdgpu_dm_update_backlight_caps(dm, bl_index);

	pCaps->num_data_points = dm->backlight_caps[bl_index].data_points;
	pCaps->max_input_signal = dm->backlight_caps[bl_index].max_input_signal;
	pCaps->min_input_signal = dm->backlight_caps[bl_index].min_input_signal;
	pCaps->ac_level_percentage = dm->backlight_caps[bl_index].ac_level;
	pCaps->dc_level_percentage = dm->backlight_caps[bl_index].dc_level;

	if (pCaps->num_data_points > 0)
		memcpy(pCaps->data_points, dm->backlight_caps[bl_index].luminance_data,
			sizeof(struct dm_bl_data_point) * pCaps->num_data_points);
	return true;
}
EXPORT_IF_KUNIT(dm_query_extended_brightness_caps);

void*
dm_allocate_gpu_mem(
		struct amdgpu_device *adev,
		enum dc_gpu_mem_alloc_type type,
		size_t size,
		long long *addr)
{
	struct dal_allocation *da;
	u32 domain = (type == DC_MEM_ALLOC_TYPE_GART) ?
		AMDGPU_GEM_DOMAIN_GTT : AMDGPU_GEM_DOMAIN_VRAM;
	int ret;

	da = kzalloc_obj(*da);
	if (!da)
		return NULL;

	ret = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
				      domain, &da->bo,
				      &da->gpu_addr, &da->cpu_ptr);

	*addr = da->gpu_addr;

	if (ret) {
		kfree(da);
		return NULL;
	}

	/* add da to list in dm */
	list_add(&da->list, &adev->dm.da_list);

	return da->cpu_ptr;
}

void
dm_free_gpu_mem(
		struct amdgpu_device *adev,
		enum dc_gpu_mem_alloc_type type,
		void *pvMem)
{
	struct dal_allocation *da;

	/* walk the da list in DM */
	list_for_each_entry(da, &adev->dm.da_list, list) {
		if (pvMem == da->cpu_ptr) {
			amdgpu_bo_free_kernel(&da->bo, &da->gpu_addr, &da->cpu_ptr);
			list_del(&da->list);
			kfree(da);
			break;
		}
	}

}