1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* 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
|
