| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #ifndef _DP_AUX_H_ |
| #define _DP_AUX_H_ |
| |
| #include <types.h> |
| |
| enum { |
| EDID_LENGTH = 128, |
| EDID_I2C_ADDR = 0x50, |
| EDID_EXTENSION_FLAG = 0x7e, |
| }; |
| |
| enum i2c_over_aux { |
| I2C_OVER_AUX_WRITE_MOT_0 = 0x0, |
| I2C_OVER_AUX_READ_MOT_0 = 0x1, |
| I2C_OVER_AUX_WRITE_STATUS_UPDATE_0 = 0x2, |
| I2C_OVER_AUX_WRITE_MOT_1 = 0x4, |
| I2C_OVER_AUX_READ_MOT_1 = 0x5, |
| I2C_OVER_AUX_WRITE_STATUS_UPDATE_1 = 0x6, |
| NATIVE_AUX_WRITE = 0x8, |
| NATIVE_AUX_READ = 0x9, |
| }; |
| |
| enum aux_request { |
| DPCD_READ, |
| DPCD_WRITE, |
| I2C_RAW_READ, |
| I2C_RAW_WRITE, |
| I2C_RAW_READ_AND_STOP, |
| I2C_RAW_WRITE_AND_STOP, |
| }; |
| |
| /* Backlight configuration */ |
| #define DP_BACKLIGHT_MODE_SET 0x721 |
| #define DP_BACKLIGHT_CONTROL_MODE_MASK 0x3 |
| #define DP_BACKLIGHT_CONTROL_MODE_DPCD 0x2 |
| #define DP_DISPLAY_CONTROL_REGISTER 0x720 |
| #define DP_BACKLIGHT_ENABLE 0x1 |
| #define DP_BACKLIGHT_BRIGHTNESS_MSB 0x722 |
| |
| #define DP_AUX_MAX_PAYLOAD_BYTES 16 |
| |
| |
| bool dp_aux_request_is_write(enum aux_request request); |
| enum i2c_over_aux dp_get_aux_cmd(enum aux_request request, uint32_t remaining_after_this); |
| |
| #endif |