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1 | /* |
2 | * Copyright © 2016 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
20 | * OTHER DEALINGS IN THE SOFTWARE. | |
21 | */ | |
22 | ||
23 | #ifndef DRM_DP_DUAL_MODE_HELPER_H | |
24 | #define DRM_DP_DUAL_MODE_HELPER_H | |
25 | ||
26 | #include <linux/types.h> | |
27 | ||
28 | /* | |
29 | * Optional for type 1 DVI adaptors | |
30 | * Mandatory for type 1 HDMI and type 2 adaptors | |
31 | */ | |
32 | #define DP_DUAL_MODE_HDMI_ID 0x00 /* 00-0f */ | |
33 | #define DP_DUAL_MODE_HDMI_ID_LEN 16 | |
34 | /* | |
35 | * Optional for type 1 adaptors | |
36 | * Mandatory for type 2 adaptors | |
37 | */ | |
38 | #define DP_DUAL_MODE_ADAPTOR_ID 0x10 | |
39 | #define DP_DUAL_MODE_REV_MASK 0x07 | |
40 | #define DP_DUAL_MODE_REV_TYPE2 0x00 | |
41 | #define DP_DUAL_MODE_TYPE_MASK 0xf0 | |
42 | #define DP_DUAL_MODE_TYPE_TYPE2 0xa0 | |
43 | #define DP_DUAL_MODE_IEEE_OUI 0x11 /* 11-13*/ | |
44 | #define DP_DUAL_IEEE_OUI_LEN 3 | |
45 | #define DP_DUAL_DEVICE_ID 0x14 /* 14-19 */ | |
46 | #define DP_DUAL_DEVICE_ID_LEN 6 | |
47 | #define DP_DUAL_MODE_HARDWARE_REV 0x1a | |
48 | #define DP_DUAL_MODE_FIRMWARE_MAJOR_REV 0x1b | |
49 | #define DP_DUAL_MODE_FIRMWARE_MINOR_REV 0x1c | |
50 | #define DP_DUAL_MODE_MAX_TMDS_CLOCK 0x1d | |
51 | #define DP_DUAL_MODE_I2C_SPEED_CAP 0x1e | |
52 | #define DP_DUAL_MODE_TMDS_OEN 0x20 | |
53 | #define DP_DUAL_MODE_TMDS_DISABLE 0x01 | |
54 | #define DP_DUAL_MODE_HDMI_PIN_CTRL 0x21 | |
55 | #define DP_DUAL_MODE_CEC_ENABLE 0x01 | |
56 | #define DP_DUAL_MODE_I2C_SPEED_CTRL 0x22 | |
57 | ||
58 | struct i2c_adapter; | |
59 | ||
60 | ssize_t drm_dp_dual_mode_read(struct i2c_adapter *adapter, | |
61 | u8 offset, void *buffer, size_t size); | |
62 | ssize_t drm_dp_dual_mode_write(struct i2c_adapter *adapter, | |
63 | u8 offset, const void *buffer, size_t size); | |
64 | ||
65 | /** | |
66 | * enum drm_dp_dual_mode_type - Type of the DP dual mode adaptor | |
67 | * @DRM_DP_DUAL_MODE_NONE: No DP dual mode adaptor | |
68 | * @DRM_DP_DUAL_MODE_UNKNOWN: Could be either none or type 1 DVI adaptor | |
69 | * @DRM_DP_DUAL_MODE_TYPE1_DVI: Type 1 DVI adaptor | |
70 | * @DRM_DP_DUAL_MODE_TYPE1_HDMI: Type 1 HDMI adaptor | |
71 | * @DRM_DP_DUAL_MODE_TYPE2_DVI: Type 2 DVI adaptor | |
72 | * @DRM_DP_DUAL_MODE_TYPE2_HDMI: Type 2 HDMI adaptor | |
73 | */ | |
74 | enum drm_dp_dual_mode_type { | |
75 | DRM_DP_DUAL_MODE_NONE, | |
76 | DRM_DP_DUAL_MODE_UNKNOWN, | |
77 | DRM_DP_DUAL_MODE_TYPE1_DVI, | |
78 | DRM_DP_DUAL_MODE_TYPE1_HDMI, | |
79 | DRM_DP_DUAL_MODE_TYPE2_DVI, | |
80 | DRM_DP_DUAL_MODE_TYPE2_HDMI, | |
81 | }; | |
82 | ||
83 | enum drm_dp_dual_mode_type drm_dp_dual_mode_detect(struct i2c_adapter *adapter); | |
84 | int drm_dp_dual_mode_max_tmds_clock(enum drm_dp_dual_mode_type type, | |
85 | struct i2c_adapter *adapter); | |
86 | int drm_dp_dual_mode_get_tmds_output(enum drm_dp_dual_mode_type type, | |
87 | struct i2c_adapter *adapter, bool *enabled); | |
88 | int drm_dp_dual_mode_set_tmds_output(enum drm_dp_dual_mode_type type, | |
89 | struct i2c_adapter *adapter, bool enable); | |
90 | const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type); | |
91 | ||
92 | #endif |