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

/*
 * Copyright 2012-15 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 "dm_services.h"
#include "core_types.h"
#include "dce_aux.h"
#include "dce/dce_11_0_sh_mask.h"
#include "dm_event_log.h"
#include "dm_helpers.h"
#include "dmub/inc/dmub_cmd.h"

#define CTX …
#define REG(reg_name) …

#define DC_LOGGER …

#define DC_TRACE_LEVEL_MESSAGE(...) …
#define IS_DC_I2CAUX_LOGGING_ENABLED() …
#define LOG_FLAG_Error_I2cAux …
#define LOG_FLAG_I2cAux_DceAux …

#include "reg_helper.h"

#undef FN
#define FN(reg_name, field_name) …

#define FROM_AUX_ENGINE(ptr) …

#define FROM_ENGINE(ptr) …

#define FROM_AUX_ENGINE_ENGINE(ptr) …
enum { … };

#define TIME_OUT_INCREMENT …
#define TIME_OUT_MULTIPLIER_8 …
#define TIME_OUT_MULTIPLIER_16 …
#define TIME_OUT_MULTIPLIER_32 …
#define TIME_OUT_MULTIPLIER_64 …
#define MAX_TIMEOUT_LENGTH …
#define DEFAULT_AUX_ENGINE_MULT …
#define DEFAULT_AUX_ENGINE_LENGTH …

#define DC_TRACE_LEVEL_MESSAGE(...) …

static void release_engine(
	struct dce_aux *engine)
{ … }

#define SW_CAN_ACCESS_AUX …
#define DMCU_CAN_ACCESS_AUX …

static bool is_engine_available(
	struct dce_aux *engine)
{ … }
static bool acquire_engine(
	struct dce_aux *engine)
{ … }

#define COMPOSE_AUX_SW_DATA_16_20(command, address) …

#define COMPOSE_AUX_SW_DATA_8_15(address) …

#define COMPOSE_AUX_SW_DATA_0_7(address) …

static void submit_channel_request(
	struct dce_aux *engine,
	struct aux_request_transaction_data *request)
{ … }

static int read_channel_reply(struct dce_aux *engine, uint32_t size,
			      uint8_t *buffer, uint8_t *reply_result,
			      uint32_t *sw_status)
{ … }

static enum aux_return_code_type get_channel_status(
	struct dce_aux *engine,
	uint8_t *returned_bytes)
{ … }

static bool acquire(
	struct dce_aux *engine,
	struct ddc *ddc)
{ … }

void dce110_engine_destroy(struct dce_aux **engine)
{ … }

static uint32_t dce_aux_configure_timeout(struct ddc_service *ddc,
		uint32_t timeout_in_us)
{ … }

static struct dce_aux_funcs aux_functions = …;

struct dce_aux *dce110_aux_engine_construct(struct aux_engine_dce110 *aux_engine110,
		struct dc_context *ctx,
		uint32_t inst,
		uint32_t timeout_period,
		const struct dce110_aux_registers *regs,
		const struct dce110_aux_registers_mask *mask,
		const struct dce110_aux_registers_shift *shift,
		bool is_ext_aux_timeout_configurable)
{ … }

static enum i2caux_transaction_action i2caux_action_from_payload(struct aux_payload *payload)
{ … }

int dce_aux_transfer_raw(struct ddc_service *ddc,
		struct aux_payload *payload,
		enum aux_return_code_type *operation_result)
{ … }

int dce_aux_transfer_dmub_raw(struct ddc_service *ddc,
		struct aux_payload *payload,
		enum aux_return_code_type *operation_result)
{ … }

#define AUX_MAX_RETRIES …
#define AUX_MIN_DEFER_RETRIES …
#define AUX_MAX_DEFER_TIMEOUT_MS …
#define AUX_MAX_I2C_DEFER_RETRIES …
#define AUX_MAX_INVALID_REPLY_RETRIES …
#define AUX_MAX_TIMEOUT_RETRIES …
#define AUX_DEFER_DELAY_FOR_DPIA …

static void dce_aux_log_payload(const char *payload_name,
	unsigned char *payload, uint32_t length, uint32_t max_length_to_log)
{ … }

bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
		struct aux_payload *payload)
{ … }