linux/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c

/*
 * Copyright 2018 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 "resource.h"
#include "dce_i2c.h"
#include "dce_i2c_hw.h"
#include "reg_helper.h"
#include "include/gpio_service_interface.h"

#define CTX …
#define REG(reg) …

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

static void execute_transaction(
	struct dce_i2c_hw *dce_i2c_hw)
{ … }

static enum i2c_channel_operation_result get_channel_status(
	struct dce_i2c_hw *dce_i2c_hw,
	uint8_t *returned_bytes)
{ … }

static uint32_t get_hw_buffer_available_size(
	const struct dce_i2c_hw *dce_i2c_hw)
{ … }

static void process_channel_reply(
	struct dce_i2c_hw *dce_i2c_hw,
	struct i2c_payload *reply)
{ … }

static bool is_engine_available(struct dce_i2c_hw *dce_i2c_hw)
{ … }

static bool is_hw_busy(struct dce_i2c_hw *dce_i2c_hw)
{ … }

static bool process_transaction(
	struct dce_i2c_hw *dce_i2c_hw,
	struct i2c_request_transaction_data *request)
{ … }

static inline void reset_hw_engine(struct dce_i2c_hw *dce_i2c_hw)
{ … }

static void set_speed(
	struct dce_i2c_hw *dce_i2c_hw,
	uint32_t speed)
{ … }

static bool setup_engine(
	struct dce_i2c_hw *dce_i2c_hw)
{ … }

static void release_engine(
	struct dce_i2c_hw *dce_i2c_hw)
{ … }

struct dce_i2c_hw *acquire_i2c_hw_engine(
	struct resource_pool *pool,
	struct ddc *ddc)
{ … }

static enum i2c_channel_operation_result dce_i2c_hw_engine_wait_on_operation_result(struct dce_i2c_hw *dce_i2c_hw,
										    uint32_t timeout,
										    enum i2c_channel_operation_result expected_result)
{ … }

static void submit_channel_request_hw(
	struct dce_i2c_hw *dce_i2c_hw,
	struct i2c_request_transaction_data *request)
{ … }

static uint32_t get_transaction_timeout_hw(
	const struct dce_i2c_hw *dce_i2c_hw,
	uint32_t length,
	uint32_t speed)
{ … }

static bool dce_i2c_hw_engine_submit_payload(struct dce_i2c_hw *dce_i2c_hw,
					     struct i2c_payload *payload,
					     bool middle_of_transaction,
					     uint32_t speed)
{ … }

bool dce_i2c_submit_command_hw(
	struct resource_pool *pool,
	struct ddc *ddc,
	struct i2c_command *cmd,
	struct dce_i2c_hw *dce_i2c_hw)
{ … }

void dce_i2c_hw_construct(
	struct dce_i2c_hw *dce_i2c_hw,
	struct dc_context *ctx,
	uint32_t engine_id,
	const struct dce_i2c_registers *regs,
	const struct dce_i2c_shift *shifts,
	const struct dce_i2c_mask *masks)
{ … }

void dce100_i2c_hw_construct(
	struct dce_i2c_hw *dce_i2c_hw,
	struct dc_context *ctx,
	uint32_t engine_id,
	const struct dce_i2c_registers *regs,
	const struct dce_i2c_shift *shifts,
	const struct dce_i2c_mask *masks)
{ … }

void dce112_i2c_hw_construct(
	struct dce_i2c_hw *dce_i2c_hw,
	struct dc_context *ctx,
	uint32_t engine_id,
	const struct dce_i2c_registers *regs,
	const struct dce_i2c_shift *shifts,
	const struct dce_i2c_mask *masks)
{ … }

void dcn1_i2c_hw_construct(
	struct dce_i2c_hw *dce_i2c_hw,
	struct dc_context *ctx,
	uint32_t engine_id,
	const struct dce_i2c_registers *regs,
	const struct dce_i2c_shift *shifts,
	const struct dce_i2c_mask *masks)
{ … }

void dcn2_i2c_hw_construct(
	struct dce_i2c_hw *dce_i2c_hw,
	struct dc_context *ctx,
	uint32_t engine_id,
	const struct dce_i2c_registers *regs,
	const struct dce_i2c_shift *shifts,
	const struct dce_i2c_mask *masks)
{ … }