linux/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c

/*
 * Copyright 2019 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 "dmub_psr.h"
#include "dc.h"
#include "dc_dmub_srv.h"
#include "dmub/dmub_srv.h"
#include "core_types.h"

#define DC_TRACE_LEVEL_MESSAGE(...) …

#define MAX_PIPES …

static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = …;
static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = …;
static const uint8_t DP_SINK_DEVICE_STR_ID_3[] = …;

/*
 * Convert dmcub psr state to dmcu psr state.
 */
static enum dc_psr_state convert_psr_state(uint32_t raw_state)
{ … }

/*
 * Get PSR state from firmware.
 */
static void dmub_psr_get_state(struct dmub_psr *dmub, enum dc_psr_state *state, uint8_t panel_inst)
{ … }

/*
 * Set PSR version.
 */
static bool dmub_psr_set_version(struct dmub_psr *dmub, struct dc_stream_state *stream, uint8_t panel_inst)
{ … }

/*
 * Enable/Disable PSR.
 */
static void dmub_psr_enable(struct dmub_psr *dmub, bool enable, bool wait, uint8_t panel_inst)
{ … }

/*
 * Set PSR level.
 */
static void dmub_psr_set_level(struct dmub_psr *dmub, uint16_t psr_level, uint8_t panel_inst)
{ … }

/*
 * Set PSR vtotal requirement for FreeSync PSR.
 */
static void dmub_psr_set_sink_vtotal_in_psr_active(struct dmub_psr *dmub,
		uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su)
{ … }

/*
 * Set PSR power optimization flags.
 */
static void dmub_psr_set_power_opt(struct dmub_psr *dmub, unsigned int power_opt, uint8_t panel_inst)
{ … }

/*
 * Setup PSR by programming phy registers and sending psr hw context values to firmware.
 */
static bool dmub_psr_copy_settings(struct dmub_psr *dmub,
		struct dc_link *link,
		struct psr_context *psr_context,
		uint8_t panel_inst)
{ … }

/*
 * Send command to PSR to force static ENTER and ignore all state changes until exit
 */
static void dmub_psr_force_static(struct dmub_psr *dmub, uint8_t panel_inst)
{ … }

/*
 * Get PSR residency from firmware.
 */
static void dmub_psr_get_residency(struct dmub_psr *dmub, uint32_t *residency,
	uint8_t panel_inst, enum psr_residency_mode mode)
{ … }

static const struct dmub_psr_funcs psr_funcs = …;

/*
 * Construct PSR object.
 */
static void dmub_psr_construct(struct dmub_psr *psr, struct dc_context *ctx)
{ … }

/*
 * Allocate and initialize PSR object.
 */
struct dmub_psr *dmub_psr_create(struct dc_context *ctx)
{ … }

/*
 * Deallocate PSR object.
 */
void dmub_psr_destroy(struct dmub_psr **dmub)
{ … }