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/*
* 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
*
*/
#ifndef __DCE_I2C_HW_H__
#define __DCE_I2C_HW_H__
enum dc_i2c_status {
DC_I2C_STATUS__DC_I2C_STATUS_IDLE,
DC_I2C_STATUS__DC_I2C_STATUS_USED_BY_SW,
DC_I2C_STATUS__DC_I2C_STATUS_USED_BY_HW
};
enum dc_i2c_arbitration {
DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_NORMAL,
DC_I2C_ARBITRATION__DC_I2C_SW_PRIORITY_HIGH
};
enum i2c_channel_operation_result {
I2C_CHANNEL_OPERATION_SUCCEEDED,
I2C_CHANNEL_OPERATION_FAILED,
I2C_CHANNEL_OPERATION_NOT_GRANTED,
I2C_CHANNEL_OPERATION_IS_BUSY,
I2C_CHANNEL_OPERATION_NO_HANDLE_PROVIDED,
I2C_CHANNEL_OPERATION_CHANNEL_IN_USE,
I2C_CHANNEL_OPERATION_CHANNEL_CLIENT_MAX_ALLOWED,
I2C_CHANNEL_OPERATION_ENGINE_BUSY,
I2C_CHANNEL_OPERATION_TIMEOUT,
I2C_CHANNEL_OPERATION_NO_RESPONSE,
I2C_CHANNEL_OPERATION_HW_REQUEST_I2C_BUS,
I2C_CHANNEL_OPERATION_WRONG_PARAMETER,
I2C_CHANNEL_OPERATION_OUT_NB_OF_RETRIES,
I2C_CHANNEL_OPERATION_NOT_STARTED
};
enum dce_i2c_transaction_action {
DCE_I2C_TRANSACTION_ACTION_I2C_WRITE = 0x00,
DCE_I2C_TRANSACTION_ACTION_I2C_READ = 0x10,
DCE_I2C_TRANSACTION_ACTION_I2C_STATUS_REQUEST = 0x20,
DCE_I2C_TRANSACTION_ACTION_I2C_WRITE_MOT = 0x40,
DCE_I2C_TRANSACTION_ACTION_I2C_READ_MOT = 0x50,
DCE_I2C_TRANSACTION_ACTION_I2C_STATUS_REQUEST_MOT = 0x60,
DCE_I2C_TRANSACTION_ACTION_DP_WRITE = 0x80,
DCE_I2C_TRANSACTION_ACTION_DP_READ = 0x90
};
enum {
I2C_SETUP_TIME_LIMIT_DCE = 255,
I2C_SETUP_TIME_LIMIT_DCN = 3,
I2C_HW_BUFFER_SIZE_DCE100 = 538,
I2C_HW_BUFFER_SIZE_DCE = 144,
I2C_SEND_RESET_LENGTH_9 = 9,
I2C_SEND_RESET_LENGTH_10 = 10,
DEFAULT_I2C_HW_SPEED = 50,
DEFAULT_I2C_HW_SPEED_100KHZ = 100,
TRANSACTION_TIMEOUT_IN_I2C_CLOCKS = 32,
};
#define I2C_HW_ENGINE_COMMON_REG_LIST(id)\
SRI(SETUP, DC_I2C_DDC, id),\
SRI(SPEED, DC_I2C_DDC, id),\
SR(DC_I2C_ARBITRATION),\
SR(DC_I2C_CONTROL),\
SR(DC_I2C_SW_STATUS),\
SR(DC_I2C_TRANSACTION0),\
SR(DC_I2C_TRANSACTION1),\
SR(DC_I2C_TRANSACTION2),\
SR(DC_I2C_TRANSACTION3),\
SR(DC_I2C_DATA),\
SR(MICROSECOND_TIME_BASE_DIV)
#define I2C_SF(reg_name, field_name, post_fix)\
.field_name = reg_name ## __ ## field_name ## post_fix
#define I2C_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh)\
I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_ENABLE, mask_sh),\
I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_TIME_LIMIT, mask_sh),\
I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_EN, mask_sh),\
I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_CLK_DRIVE_EN, mask_sh),\
I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_DATA_DRIVE_SEL, mask_sh),\
I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_TRANSACTION_DELAY, mask_sh),\
I2C_SF(DC_I2C_DDC1_SETUP, DC_I2C_DDC1_INTRA_BYTE_DELAY, mask_sh),\
I2C_SF(DC_I2C_ARBITRATION, DC_I2C_SW_DONE_USING_I2C_REG, mask_sh),\
I2C_SF(DC_I2C_ARBITRATION, DC_I2C_NO_QUEUED_SW_GO, mask_sh),\
I2C_SF(DC_I2C_ARBITRATION, DC_I2C_SW_PRIORITY, mask_sh),\
I2C_SF(DC_I2C_CONTROL, DC_I2C_SOFT_RESET, mask_sh),\
I2C_SF(DC_I2C_CONTROL, DC_I2C_SW_STATUS_RESET, mask_sh),\
I2C_SF(DC_I2C_CONTROL, DC_I2C_GO, mask_sh),\
I2C_SF(DC_I2C_CONTROL, DC_I2C_SEND_RESET, mask_sh),\
I2C_SF(DC_I2C_CONTROL, DC_I2C_TRANSACTION_COUNT, mask_sh),\
I2C_SF(DC_I2C_CONTROL, DC_I2C_DDC_SELECT, mask_sh),\
I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_PRESCALE, mask_sh),\
I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_THRESHOLD, mask_sh),\
I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_STOPPED_ON_NACK, mask_sh),\
I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_TIMEOUT, mask_sh),\
I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_ABORTED, mask_sh),\
I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_DONE, mask_sh),\
I2C_SF(DC_I2C_SW_STATUS, DC_I2C_SW_STATUS, mask_sh),\
I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_STOP_ON_NACK0, mask_sh),\
I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_START0, mask_sh),\
I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_RW0, mask_sh),\
I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_STOP0, mask_sh),\
I2C_SF(DC_I2C_TRANSACTION0, DC_I2C_COUNT0, mask_sh),\
I2C_SF(DC_I2C_DATA, DC_I2C_DATA_RW, mask_sh),\
I2C_SF(DC_I2C_DATA, DC_I2C_DATA, mask_sh),\
I2C_SF(DC_I2C_DATA, DC_I2C_INDEX, mask_sh),\
I2C_SF(DC_I2C_DATA, DC_I2C_INDEX_WRITE, mask_sh),\
I2C_SF(MICROSECOND_TIME_BASE_DIV, XTAL_REF_DIV, mask_sh)
#define I2C_COMMON_MASK_SH_LIST_DCE110(mask_sh)\
I2C_COMMON_MASK_SH_LIST_DCE_COMMON_BASE(mask_sh),\
I2C_SF(DC_I2C_DDC1_SPEED, DC_I2C_DDC1_START_STOP_TIMING_CNTL, mask_sh)
struct dce_i2c_shift {
uint8_t DC_I2C_DDC1_ENABLE;
uint8_t DC_I2C_DDC1_TIME_LIMIT;
uint8_t DC_I2C_DDC1_DATA_DRIVE_EN;
uint8_t DC_I2C_DDC1_CLK_DRIVE_EN;
uint8_t DC_I2C_DDC1_DATA_DRIVE_SEL;
uint8_t DC_I2C_DDC1_INTRA_TRANSACTION_DELAY;
uint8_t DC_I2C_DDC1_INTRA_BYTE_DELAY;
uint8_t DC_I2C_SW_DONE_USING_I2C_REG;
uint8_t DC_I2C_NO_QUEUED_SW_GO;
uint8_t DC_I2C_SW_PRIORITY;
uint8_t DC_I2C_SOFT_RESET;
uint8_t DC_I2C_SW_STATUS_RESET;
uint8_t DC_I2C_GO;
uint8_t DC_I2C_SEND_RESET;
uint8_t DC_I2C_TRANSACTION_COUNT;
uint8_t DC_I2C_DDC_SELECT;
uint8_t DC_I2C_DDC1_PRESCALE;
uint8_t DC_I2C_DDC1_THRESHOLD;
uint8_t DC_I2C_DDC1_START_STOP_TIMING_CNTL;
uint8_t DC_I2C_SW_STOPPED_ON_NACK;
uint8_t DC_I2C_SW_TIMEOUT;
uint8_t DC_I2C_SW_ABORTED;
uint8_t DC_I2C_SW_DONE;
uint8_t DC_I2C_SW_STATUS;
uint8_t DC_I2C_STOP_ON_NACK0;
uint8_t DC_I2C_START0;
uint8_t DC_I2C_RW0;
uint8_t DC_I2C_STOP0;
uint8_t DC_I2C_COUNT0;
uint8_t DC_I2C_DATA_RW;
uint8_t DC_I2C_DATA;
uint8_t DC_I2C_INDEX;
uint8_t DC_I2C_INDEX_WRITE;
uint8_t XTAL_REF_DIV;
};
struct dce_i2c_mask {
uint32_t DC_I2C_DDC1_ENABLE;
uint32_t DC_I2C_DDC1_TIME_LIMIT;
uint32_t DC_I2C_DDC1_DATA_DRIVE_EN;
uint32_t DC_I2C_DDC1_CLK_DRIVE_EN;
uint32_t DC_I2C_DDC1_DATA_DRIVE_SEL;
uint32_t DC_I2C_DDC1_INTRA_TRANSACTION_DELAY;
uint32_t DC_I2C_DDC1_INTRA_BYTE_DELAY;
uint32_t DC_I2C_SW_DONE_USING_I2C_REG;
uint32_t DC_I2C_NO_QUEUED_SW_GO;
uint32_t DC_I2C_SW_PRIORITY;
uint32_t DC_I2C_SOFT_RESET;
uint32_t DC_I2C_SW_STATUS_RESET;
uint32_t DC_I2C_GO;
uint32_t DC_I2C_SEND_RESET;
uint32_t DC_I2C_TRANSACTION_COUNT;
uint32_t DC_I2C_DDC_SELECT;
uint32_t DC_I2C_DDC1_PRESCALE;
uint32_t DC_I2C_DDC1_THRESHOLD;
uint32_t DC_I2C_DDC1_START_STOP_TIMING_CNTL;
uint32_t DC_I2C_SW_STOPPED_ON_NACK;
uint32_t DC_I2C_SW_TIMEOUT;
uint32_t DC_I2C_SW_ABORTED;
uint32_t DC_I2C_SW_DONE;
uint32_t DC_I2C_SW_STATUS;
uint32_t DC_I2C_STOP_ON_NACK0;
uint32_t DC_I2C_START0;
uint32_t DC_I2C_RW0;
uint32_t DC_I2C_STOP0;
uint32_t DC_I2C_COUNT0;
uint32_t DC_I2C_DATA_RW;
uint32_t DC_I2C_DATA;
uint32_t DC_I2C_INDEX;
uint32_t DC_I2C_INDEX_WRITE;
uint32_t XTAL_REF_DIV;
};
struct dce_i2c_registers {
uint32_t SETUP;
uint32_t SPEED;
uint32_t DC_I2C_ARBITRATION;
uint32_t DC_I2C_CONTROL;
uint32_t DC_I2C_SW_STATUS;
uint32_t DC_I2C_TRANSACTION0;
uint32_t DC_I2C_TRANSACTION1;
uint32_t DC_I2C_TRANSACTION2;
uint32_t DC_I2C_TRANSACTION3;
uint32_t DC_I2C_DATA;
uint32_t MICROSECOND_TIME_BASE_DIV;
};
enum dce_i2c_transaction_address_space {
DCE_I2C_TRANSACTION_ADDRESS_SPACE_I2C = 1,
DCE_I2C_TRANSACTION_ADDRESS_SPACE_DPCD
};
struct i2c_request_transaction_data {
enum dce_i2c_transaction_action action;
enum i2c_channel_operation_result status;
uint8_t address;
uint32_t length;
uint8_t *data;
};
struct i2c_reply_transaction_data {
uint32_t length;
uint8_t *data;
};
struct dce_i2c_hw {
struct ddc *ddc;
uint32_t original_speed;
uint32_t engine_keep_power_up_count;
uint32_t transaction_count;
uint32_t buffer_used_bytes;
uint32_t buffer_used_write;
uint32_t reference_frequency;
uint32_t default_speed;
uint32_t engine_id;
uint32_t setup_limit;
uint32_t send_reset_length;
uint32_t buffer_size;
struct dc_context *ctx;
const struct dce_i2c_registers *regs;
const struct dce_i2c_shift *shifts;
const struct dce_i2c_mask *masks;
};
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);
bool dce_i2c_submit_command_hw(
struct resource_pool *pool,
struct ddc *ddc,
struct i2c_command *cmd,
struct dce_i2c_hw *dce_i2c_hw);
struct dce_i2c_hw *acquire_i2c_hw_engine(
struct resource_pool *pool,
struct ddc *ddc);
#endif
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