2 * Copyright (c) 2014, NVIDIA Corporation.
4 * SPDX-License-Identifier: GPL-2.0
7 #ifndef _TEGRA_DISPLAYPORT_H
8 #define _TEGRA_DISPLAYPORT_H
10 #include <linux/drm_dp_helper.h>
19 #define DPAUX_INTR_EN_AUX 0x1
20 #define DPAUX_INTR_AUX 0x5
21 #define DPAUX_DP_AUXDATA_WRITE_W(i) (0x9 + 4 * (i))
22 #define DPAUX_DP_AUXDATA_READ_W(i) (0x19 + 4 * (i))
23 #define DPAUX_DP_AUXADDR 0x29
24 #define DPAUX_DP_AUXCTL 0x2d
25 #define DPAUX_DP_AUXCTL_CMDLEN_SHIFT 0
26 #define DPAUX_DP_AUXCTL_CMDLEN_FIELD 0xff
27 #define DPAUX_DP_AUXCTL_CMD_SHIFT 12
28 #define DPAUX_DP_AUXCTL_CMD_MASK (0xf << 12)
29 #define DPAUX_DP_AUXCTL_CMD_I2CWR (0 << 12)
30 #define DPAUX_DP_AUXCTL_CMD_I2CRD (1 << 12)
31 #define DPAUX_DP_AUXCTL_CMD_I2CREQWSTAT (2 << 12)
32 #define DPAUX_DP_AUXCTL_CMD_MOTWR (4 << 12)
33 #define DPAUX_DP_AUXCTL_CMD_MOTRD (5 << 12)
34 #define DPAUX_DP_AUXCTL_CMD_MOTREQWSTAT (6 << 12)
35 #define DPAUX_DP_AUXCTL_CMD_AUXWR (8 << 12)
36 #define DPAUX_DP_AUXCTL_CMD_AUXRD (9 << 12)
37 #define DPAUX_DP_AUXCTL_TRANSACTREQ_SHIFT 16
38 #define DPAUX_DP_AUXCTL_TRANSACTREQ_MASK (0x1 << 16)
39 #define DPAUX_DP_AUXCTL_TRANSACTREQ_DONE (0 << 16)
40 #define DPAUX_DP_AUXCTL_TRANSACTREQ_PENDING (1 << 16)
41 #define DPAUX_DP_AUXCTL_RST_SHIFT 31
42 #define DPAUX_DP_AUXCTL_RST_DEASSERT (0 << 31)
43 #define DPAUX_DP_AUXCTL_RST_ASSERT (1 << 31)
44 #define DPAUX_DP_AUXSTAT 0x31
45 #define DPAUX_DP_AUXSTAT_HPD_STATUS_SHIFT 28
46 #define DPAUX_DP_AUXSTAT_HPD_STATUS_UNPLUG (0 << 28)
47 #define DPAUX_DP_AUXSTAT_HPD_STATUS_PLUGGED (1 << 28)
48 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_SHIFT 20
49 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_MASK (0xf << 20)
50 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_IDLE (0 << 20)
51 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_SYNC (1 << 20)
52 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_START1 (2 << 20)
53 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_COMMAND (3 << 20)
54 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_ADDRESS (4 << 20)
55 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_LENGTH (5 << 20)
56 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_WRITE1 (6 << 20)
57 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_READ1 (7 << 20)
58 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_GET_M (8 << 20)
59 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_STOP1 (9 << 20)
60 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_STOP2 (10 << 20)
61 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_REPLY (11 << 20)
62 #define DPAUX_DP_AUXSTAT_AUXCTL_STATE_CLEANUP (12 << 20)
63 #define DPAUX_DP_AUXSTAT_REPLYTYPE_SHIFT 16
64 #define DPAUX_DP_AUXSTAT_REPLYTYPE_MASK (0xf << 16)
65 #define DPAUX_DP_AUXSTAT_REPLYTYPE_ACK (0 << 16)
66 #define DPAUX_DP_AUXSTAT_REPLYTYPE_NACK (1 << 16)
67 #define DPAUX_DP_AUXSTAT_REPLYTYPE_DEFER (2 << 16)
68 #define DPAUX_DP_AUXSTAT_REPLYTYPE_I2CNACK (4 << 16)
69 #define DPAUX_DP_AUXSTAT_REPLYTYPE_I2CDEFER (8 << 16)
70 #define DPAUX_DP_AUXSTAT_NO_STOP_ERROR_SHIFT 11
71 #define DPAUX_DP_AUXSTAT_NO_STOP_ERROR_NOT_PENDING (0 << 11)
72 #define DPAUX_DP_AUXSTAT_NO_STOP_ERROR_PENDING (1 << 11)
73 #define DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_SHIFT 10
74 #define DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_NOT_PENDING (0 << 10)
75 #define DPAUX_DP_AUXSTAT_SINKSTAT_ERROR_PENDING (1 << 10)
76 #define DPAUX_DP_AUXSTAT_RX_ERROR_SHIFT 9
77 #define DPAUX_DP_AUXSTAT_RX_ERROR_NOT_PENDING (0 << 9)
78 #define DPAUX_DP_AUXSTAT_RX_ERROR_PENDING (1 << 9)
79 #define DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_SHIFT 8
80 #define DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_NOT_PENDING (0 << 8)
81 #define DPAUX_DP_AUXSTAT_TIMEOUT_ERROR_PENDING (1 << 8)
82 #define DPAUX_DP_AUXSTAT_REPLY_M_SHIFT 0
83 #define DPAUX_DP_AUXSTAT_REPLY_M_MASK (0xff << 0)
84 #define DPAUX_HPD_CONFIG (0x3d)
85 #define DPAUX_HPD_IRQ_CONFIG 0x41
86 #define DPAUX_DP_AUX_CONFIG 0x45
87 #define DPAUX_HYBRID_PADCTL 0x49
88 #define DPAUX_HYBRID_PADCTL_I2C_SDA_INPUT_RCV_SHIFT 15
89 #define DPAUX_HYBRID_PADCTL_I2C_SDA_INPUT_RCV_DISABLE (0 << 15)
90 #define DPAUX_HYBRID_PADCTL_I2C_SDA_INPUT_RCV_ENABLE (1 << 15)
91 #define DPAUX_HYBRID_PADCTL_I2C_SCL_INPUT_RCV_SHIFT 14
92 #define DPAUX_HYBRID_PADCTL_I2C_SCL_INPUT_RCV_DISABLE (0 << 14)
93 #define DPAUX_HYBRID_PADCTL_I2C_SCL_INPUT_RCV_ENABLE (1 << 14)
94 #define DPAUX_HYBRID_PADCTL_AUX_CMH_SHIFT 12
95 #define DPAUX_HYBRID_PADCTL_AUX_CMH_DEFAULT_MASK (0x3 << 12)
96 #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_60 (0 << 12)
97 #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_64 (1 << 12)
98 #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_70 (2 << 12)
99 #define DPAUX_HYBRID_PADCTL_AUX_CMH_V0_56 (3 << 12)
100 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_SHIFT 8
101 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_DEFAULT_MASK (0x7 << 8)
102 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_78 (0 << 8)
103 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_60 (1 << 8)
104 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_54 (2 << 8)
105 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_45 (3 << 8)
106 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_50 (4 << 8)
107 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_42 (5 << 8)
108 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_39 (6 << 8)
109 #define DPAUX_HYBRID_PADCTL_AUX_DRVZ_OHM_34 (7 << 8)
110 #define DPAUX_HYBRID_PADCTL_AUX_DRVI_SHIFT 2
111 #define DPAUX_HYBRID_PADCTL_AUX_DRVI_DEFAULT_MASK (0x3f << 2)
112 #define DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV_SHIFT 1
113 #define DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV_DISABLE (0 << 1)
114 #define DPAUX_HYBRID_PADCTL_AUX_INPUT_RCV_ENABLE (1 << 1)
115 #define DPAUX_HYBRID_PADCTL_MODE_SHIFT 0
116 #define DPAUX_HYBRID_PADCTL_MODE_AUX 0
117 #define DPAUX_HYBRID_PADCTL_MODE_I2C 1
118 #define DPAUX_HYBRID_SPARE 0x4d
119 #define DPAUX_HYBRID_SPARE_PAD_PWR_POWERUP 0
120 #define DPAUX_HYBRID_SPARE_PAD_PWR_POWERDOWN 1
122 #define DP_AUX_DEFER_MAX_TRIES 7
123 #define DP_AUX_TIMEOUT_MAX_TRIES 2
124 #define DP_POWER_ON_MAX_TRIES 3
126 #define DP_AUX_MAX_BYTES 16
128 #define DP_AUX_TIMEOUT_MS 40
129 #define DP_DPCP_RETRY_SLEEP_NS 400
131 static const u32 tegra_dp_vs_regs[][4][4] = {
134 /* pre-emphasis: L0, L1, L2, L3 */
135 {0x13, 0x19, 0x1e, 0x28}, /* voltage swing: L0 */
136 {0x1e, 0x25, 0x2d}, /* L1 */
137 {0x28, 0x32}, /* L2 */
143 {0x12, 0x17, 0x1b, 0x25},
151 {0x12, 0x16, 0x1a, 0x22},
159 {0x11, 0x14, 0x17, 0x1f},
166 static const u32 tegra_dp_pe_regs[][4][4] = {
169 /* pre-emphasis: L0, L1, L2, L3 */
170 {0x00, 0x09, 0x13, 0x25}, /* voltage swing: L0 */
171 {0x00, 0x0f, 0x1e}, /* L1 */
172 {0x00, 0x14}, /* L2 */
178 {0x00, 0x0a, 0x14, 0x28},
186 {0x00, 0x0a, 0x14, 0x28},
194 {0x00, 0x0a, 0x14, 0x28},
201 static const u32 tegra_dp_pc_regs[][4][4] = {
204 /* pre-emphasis: L0, L1, L2, L3 */
205 {0x00, 0x00, 0x00, 0x00}, /* voltage swing: L0 */
206 {0x00, 0x00, 0x00}, /* L1 */
207 {0x00, 0x00}, /* L2 */
213 {0x02, 0x02, 0x04, 0x05},
221 {0x04, 0x05, 0x08, 0x0b},
229 {0x05, 0x09, 0x0b, 0x12},
236 static const u32 tegra_dp_tx_pu[][4][4] = {
239 /* pre-emphasis: L0, L1, L2, L3 */
240 {0x20, 0x30, 0x40, 0x60}, /* voltage swing: L0 */
241 {0x30, 0x40, 0x60}, /* L1 */
242 {0x40, 0x60}, /* L2 */
248 {0x20, 0x20, 0x30, 0x50},
256 {0x20, 0x20, 0x30, 0x40},
264 {0x20, 0x20, 0x20, 0x40},
272 DRIVECURRENT_LEVEL0 = 0,
273 DRIVECURRENT_LEVEL1 = 1,
274 DRIVECURRENT_LEVEL2 = 2,
275 DRIVECURRENT_LEVEL3 = 3,
279 PREEMPHASIS_DISABLED = 0,
280 PREEMPHASIS_LEVEL1 = 1,
281 PREEMPHASIS_LEVEL2 = 2,
282 PREEMPHASIS_LEVEL3 = 3,
286 POSTCURSOR2_LEVEL0 = 0,
287 POSTCURSOR2_LEVEL1 = 1,
288 POSTCURSOR2_LEVEL2 = 2,
289 POSTCURSOR2_LEVEL3 = 3,
290 POSTCURSOR2_SUPPORTED
293 static inline int tegra_dp_is_max_vs(u32 pe, u32 vs)
295 return (vs < (DRIVECURRENT_LEVEL3 - pe)) ? 0 : 1;
298 static inline int tegra_dp_is_max_pe(u32 pe, u32 vs)
300 return (pe < (PREEMPHASIS_LEVEL3 - vs)) ? 0 : 1;
303 static inline int tegra_dp_is_max_pc(u32 pc)
305 return (pc < POSTCURSOR2_LEVEL3) ? 0 : 1;
308 /* DPCD definitions which are not defined in drm_dp_helper.h */
309 #define DP_DPCD_REV_MAJOR_SHIFT 4
310 #define DP_DPCD_REV_MAJOR_MASK (0xf << 4)
311 #define DP_DPCD_REV_MINOR_SHIFT 0
312 #define DP_DPCD_REV_MINOR_MASK 0xf
314 #define DP_MAX_LINK_RATE_VAL_1_62_GPBS 0x6
315 #define DP_MAX_LINK_RATE_VAL_2_70_GPBS 0xa
316 #define DP_MAX_LINK_RATE_VAL_5_40_GPBS 0x4
318 #define DP_MAX_LANE_COUNT_LANE_1 0x1
319 #define DP_MAX_LANE_COUNT_LANE_2 0x2
320 #define DP_MAX_LANE_COUNT_LANE_4 0x4
321 #define DP_MAX_LANE_COUNT_TPS3_SUPPORTED_YES (1 << 6)
322 #define DP_MAX_LANE_COUNT_ENHANCED_FRAMING_YES (1 << 7)
324 #define NV_DPCD_TRAINING_LANEX_SET_DC_SHIFT 0
325 #define NV_DPCD_TRAINING_LANEX_SET_DC_MAX_REACHED_T (0x00000001 << 2)
326 #define NV_DPCD_TRAINING_LANEX_SET_DC_MAX_REACHED_F (0x00000000 << 2)
327 #define NV_DPCD_TRAINING_LANEX_SET_PE_SHIFT 3
328 #define NV_DPCD_TRAINING_LANEX_SET_PE_MAX_REACHED_T (0x00000001 << 5)
329 #define NV_DPCD_TRAINING_LANEX_SET_PE_MAX_REACHED_F (0x00000000 << 5)
331 #define DP_MAX_DOWNSPREAD_VAL_NONE 0
332 #define DP_MAX_DOWNSPREAD_VAL_0_5_PCT 1
333 #define DP_MAX_DOWNSPREAD_NO_AUX_HANDSHAKE_LT_T (1 << 6)
335 #define DP_EDP_CONFIGURATION_CAP_ASC_RESET_YES 1
336 #define DP_EDP_CONFIGURATION_CAP_FRAMING_CHANGE_YES (1 << 1)
338 #define DP_LANE_COUNT_SET_ENHANCEDFRAMING_T (1 << 7)
340 #define DP_TRAINING_PATTERN_SET_SC_DISABLED_T (1 << 5)
341 #define NV_DPCD_TRAINING_PATTERN_SET_SC_DISABLED_F (0x00000000 << 5)
342 #define NV_DPCD_TRAINING_PATTERN_SET_SC_DISABLED_T (0x00000001 << 5)
344 #define DP_MAIN_LINK_CHANNEL_CODING_SET_ASC_RESET_DISABLE 0
345 #define DP_MAIN_LINK_CHANNEL_CODING_SET_ASC_RESET_ENABLE 1
347 #define NV_DPCD_TRAINING_LANE0_1_SET2 0x10f
348 #define NV_DPCD_TRAINING_LANE2_3_SET2 0x110
349 #define NV_DPCD_LANEX_SET2_PC2_MAX_REACHED_T (1 << 2)
350 #define NV_DPCD_LANEX_SET2_PC2_MAX_REACHED_F (0 << 2)
351 #define NV_DPCD_LANEXPLUS1_SET2_PC2_MAX_REACHED_T (1 << 6)
352 #define NV_DPCD_LANEXPLUS1_SET2_PC2_MAX_REACHED_F (0 << 6)
353 #define NV_DPCD_LANEX_SET2_PC2_SHIFT 0
354 #define NV_DPCD_LANEXPLUS1_SET2_PC2_SHIFT 4
356 #define NV_DPCD_STATUS_LANEX_CR_DONE_SHIFT 0
357 #define NV_DPCD_STATUS_LANEX_CR_DONE_NO (0x00000000)
358 #define NV_DPCD_STATUS_LANEX_CR_DONE_YES (0x00000001)
359 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_SHIFT 1
360 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_NO (0x00000000 << 1)
361 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_YES (0x00000001 << 1)
362 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_SHFIT 2
363 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_NO (0x00000000 << 2)
364 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_YES (0x00000001 << 2)
365 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_SHIFT 4
366 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_NO (0x00000000 << 4)
367 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_YES (0x00000001 << 4)
368 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_SHIFT 5
369 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_NO (0x00000000 << 5)
370 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_YES (0x00000001 << 5)
371 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_SHIFT 6
372 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_NO (0x00000000 << 6)
373 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_YES (0x00000001 << 6)
375 #define NV_DPCD_LANE_ALIGN_STATUS_UPDATED (0x00000204)
376 #define NV_DPCD_LANE_ALIGN_STATUS_UPDATED_DONE_NO (0x00000000)
377 #define NV_DPCD_LANE_ALIGN_STATUS_UPDATED_DONE_YES (0x00000001)
379 #define NV_DPCD_STATUS_LANEX_CR_DONE_SHIFT 0
380 #define NV_DPCD_STATUS_LANEX_CR_DONE_NO (0x00000000)
381 #define NV_DPCD_STATUS_LANEX_CR_DONE_YES (0x00000001)
382 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_SHIFT 1
383 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_NO (0x00000000 << 1)
384 #define NV_DPCD_STATUS_LANEX_CHN_EQ_DONE_YES (0x00000001 << 1)
385 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_SHFIT 2
386 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_NO (0x00000000 << 2)
387 #define NV_DPCD_STATUS_LANEX_SYMBOL_LOCKED_YES (0x00000001 << 2)
388 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_SHIFT 4
389 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_NO (0x00000000 << 4)
390 #define NV_DPCD_STATUS_LANEXPLUS1_CR_DONE_YES (0x00000001 << 4)
391 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_SHIFT 5
392 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_NO (0x00000000 << 5)
393 #define NV_DPCD_STATUS_LANEXPLUS1_CHN_EQ_DONE_YES (0x00000001 << 5)
394 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_SHIFT 6
395 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_NO (0x00000000 << 6)
396 #define NV_DPCD_STATUS_LANEXPLUS1_SYMBOL_LOCKED_YES (0x00000001 << 6)
398 #define NV_DPCD_ADJUST_REQ_LANEX_DC_SHIFT 0
399 #define NV_DPCD_ADJUST_REQ_LANEX_DC_MASK 0x3
400 #define NV_DPCD_ADJUST_REQ_LANEX_PE_SHIFT 2
401 #define NV_DPCD_ADJUST_REQ_LANEX_PE_MASK (0x3 << 2)
402 #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_DC_SHIFT 4
403 #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_DC_MASK (0x3 << 4)
404 #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_PE_SHIFT 6
405 #define NV_DPCD_ADJUST_REQ_LANEXPLUS1_PE_MASK (0x3 << 6)
406 #define NV_DPCD_ADJUST_REQ_POST_CURSOR2 (0x0000020C)
407 #define NV_DPCD_ADJUST_REQ_POST_CURSOR2_LANE_MASK 0x3
408 #define NV_DPCD_ADJUST_REQ_POST_CURSOR2_LANE_SHIFT(i) (i*2)
410 #define NV_DPCD_TRAINING_AUX_RD_INTERVAL (0x0000000E)
411 #define NV_DPCD_TRAINING_LANEX_SET_DC_MAX_REACHED_F (0x00000000 << 2)