1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NVKM_DISP_DP_H__
3 #define __NVKM_DISP_DP_H__
4 #define nvkm_dp(p) container_of((p), struct nvkm_dp, outp)
5 #include "outp.h"
6 
7 #include <core/notify.h>
8 #include <subdev/bios.h>
9 #include <subdev/bios/dp.h>
10 
11 struct nvkm_dp {
12 	union {
13 		struct nvkm_outp base;
14 		struct nvkm_outp outp;
15 	};
16 
17 	struct nvbios_dpout info;
18 	u8 version;
19 
20 	struct nvkm_i2c_aux *aux;
21 
22 	struct nvkm_notify hpd;
23 	bool present;
24 	u8 dpcd[16];
25 
26 	struct mutex mutex;
27 	struct {
28 		atomic_t done;
29 		bool mst;
30 	} lt;
31 };
32 
33 int nvkm_dp_new(struct nvkm_disp *, int index, struct dcb_output *,
34 		struct nvkm_outp **);
35 
36 /* DPCD Receiver Capabilities */
37 #define DPCD_RC00_DPCD_REV                                              0x00000
38 #define DPCD_RC01_MAX_LINK_RATE                                         0x00001
39 #define DPCD_RC02                                                       0x00002
40 #define DPCD_RC02_ENHANCED_FRAME_CAP                                       0x80
41 #define DPCD_RC02_TPS3_SUPPORTED                                           0x40
42 #define DPCD_RC02_MAX_LANE_COUNT                                           0x1f
43 #define DPCD_RC03                                                       0x00003
44 #define DPCD_RC03_MAX_DOWNSPREAD                                           0x01
45 #define DPCD_RC0E_AUX_RD_INTERVAL                                       0x0000e
46 
47 /* DPCD Link Configuration */
48 #define DPCD_LC00_LINK_BW_SET                                           0x00100
49 #define DPCD_LC01                                                       0x00101
50 #define DPCD_LC01_ENHANCED_FRAME_EN                                        0x80
51 #define DPCD_LC01_LANE_COUNT_SET                                           0x1f
52 #define DPCD_LC02                                                       0x00102
53 #define DPCD_LC02_TRAINING_PATTERN_SET                                     0x03
54 #define DPCD_LC03(l)                                            ((l) +  0x00103)
55 #define DPCD_LC03_MAX_PRE_EMPHASIS_REACHED                                 0x20
56 #define DPCD_LC03_PRE_EMPHASIS_SET                                         0x18
57 #define DPCD_LC03_MAX_SWING_REACHED                                        0x04
58 #define DPCD_LC03_VOLTAGE_SWING_SET                                        0x03
59 #define DPCD_LC0F                                                       0x0010f
60 #define DPCD_LC0F_LANE1_MAX_POST_CURSOR2_REACHED                           0x40
61 #define DPCD_LC0F_LANE1_POST_CURSOR2_SET                                   0x30
62 #define DPCD_LC0F_LANE0_MAX_POST_CURSOR2_REACHED                           0x04
63 #define DPCD_LC0F_LANE0_POST_CURSOR2_SET                                   0x03
64 #define DPCD_LC10                                                       0x00110
65 #define DPCD_LC10_LANE3_MAX_POST_CURSOR2_REACHED                           0x40
66 #define DPCD_LC10_LANE3_POST_CURSOR2_SET                                   0x30
67 #define DPCD_LC10_LANE2_MAX_POST_CURSOR2_REACHED                           0x04
68 #define DPCD_LC10_LANE2_POST_CURSOR2_SET                                   0x03
69 
70 /* DPCD Link/Sink Status */
71 #define DPCD_LS02                                                       0x00202
72 #define DPCD_LS02_LANE1_SYMBOL_LOCKED                                      0x40
73 #define DPCD_LS02_LANE1_CHANNEL_EQ_DONE                                    0x20
74 #define DPCD_LS02_LANE1_CR_DONE                                            0x10
75 #define DPCD_LS02_LANE0_SYMBOL_LOCKED                                      0x04
76 #define DPCD_LS02_LANE0_CHANNEL_EQ_DONE                                    0x02
77 #define DPCD_LS02_LANE0_CR_DONE                                            0x01
78 #define DPCD_LS03                                                       0x00203
79 #define DPCD_LS03_LANE3_SYMBOL_LOCKED                                      0x40
80 #define DPCD_LS03_LANE3_CHANNEL_EQ_DONE                                    0x20
81 #define DPCD_LS03_LANE3_CR_DONE                                            0x10
82 #define DPCD_LS03_LANE2_SYMBOL_LOCKED                                      0x04
83 #define DPCD_LS03_LANE2_CHANNEL_EQ_DONE                                    0x02
84 #define DPCD_LS03_LANE2_CR_DONE                                            0x01
85 #define DPCD_LS04                                                       0x00204
86 #define DPCD_LS04_LINK_STATUS_UPDATED                                      0x80
87 #define DPCD_LS04_DOWNSTREAM_PORT_STATUS_CHANGED                           0x40
88 #define DPCD_LS04_INTERLANE_ALIGN_DONE                                     0x01
89 #define DPCD_LS06                                                       0x00206
90 #define DPCD_LS06_LANE1_PRE_EMPHASIS                                       0xc0
91 #define DPCD_LS06_LANE1_VOLTAGE_SWING                                      0x30
92 #define DPCD_LS06_LANE0_PRE_EMPHASIS                                       0x0c
93 #define DPCD_LS06_LANE0_VOLTAGE_SWING                                      0x03
94 #define DPCD_LS07                                                       0x00207
95 #define DPCD_LS07_LANE3_PRE_EMPHASIS                                       0xc0
96 #define DPCD_LS07_LANE3_VOLTAGE_SWING                                      0x30
97 #define DPCD_LS07_LANE2_PRE_EMPHASIS                                       0x0c
98 #define DPCD_LS07_LANE2_VOLTAGE_SWING                                      0x03
99 #define DPCD_LS0C                                                       0x0020c
100 #define DPCD_LS0C_LANE3_POST_CURSOR2                                       0xc0
101 #define DPCD_LS0C_LANE2_POST_CURSOR2                                       0x30
102 #define DPCD_LS0C_LANE1_POST_CURSOR2                                       0x0c
103 #define DPCD_LS0C_LANE0_POST_CURSOR2                                       0x03
104 
105 /* DPCD Sink Control */
106 #define DPCD_SC00                                                       0x00600
107 #define DPCD_SC00_SET_POWER                                                0x03
108 #define DPCD_SC00_SET_POWER_D0                                             0x01
109 #define DPCD_SC00_SET_POWER_D3                                             0x03
110 #endif
111