2 * Copyright © 2012 Intel Corporation
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:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Eugeni Dodonov <eugeni.dodonov@intel.com>
29 #include "intel_drv.h"
31 struct ddi_buf_trans
{
32 u32 trans1
; /* balance leg enable, de-emph level */
33 u32 trans2
; /* vref sel, vswing */
34 u8 i_boost
; /* SKL: I_boost; valid: 0x0, 0x1, 0x3, 0x7 */
37 static const u8 index_to_dp_signal_levels
[] = {
38 [0] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0
| DP_TRAIN_PRE_EMPH_LEVEL_0
,
39 [1] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0
| DP_TRAIN_PRE_EMPH_LEVEL_1
,
40 [2] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0
| DP_TRAIN_PRE_EMPH_LEVEL_2
,
41 [3] = DP_TRAIN_VOLTAGE_SWING_LEVEL_0
| DP_TRAIN_PRE_EMPH_LEVEL_3
,
42 [4] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1
| DP_TRAIN_PRE_EMPH_LEVEL_0
,
43 [5] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1
| DP_TRAIN_PRE_EMPH_LEVEL_1
,
44 [6] = DP_TRAIN_VOLTAGE_SWING_LEVEL_1
| DP_TRAIN_PRE_EMPH_LEVEL_2
,
45 [7] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2
| DP_TRAIN_PRE_EMPH_LEVEL_0
,
46 [8] = DP_TRAIN_VOLTAGE_SWING_LEVEL_2
| DP_TRAIN_PRE_EMPH_LEVEL_1
,
47 [9] = DP_TRAIN_VOLTAGE_SWING_LEVEL_3
| DP_TRAIN_PRE_EMPH_LEVEL_0
,
50 /* HDMI/DVI modes ignore everything but the last 2 items. So we share
51 * them for both DP and FDI transports, allowing those ports to
52 * automatically adapt to HDMI connections as well
54 static const struct ddi_buf_trans hsw_ddi_translations_dp
[] = {
55 { 0x00FFFFFF, 0x0006000E, 0x0 },
56 { 0x00D75FFF, 0x0005000A, 0x0 },
57 { 0x00C30FFF, 0x00040006, 0x0 },
58 { 0x80AAAFFF, 0x000B0000, 0x0 },
59 { 0x00FFFFFF, 0x0005000A, 0x0 },
60 { 0x00D75FFF, 0x000C0004, 0x0 },
61 { 0x80C30FFF, 0x000B0000, 0x0 },
62 { 0x00FFFFFF, 0x00040006, 0x0 },
63 { 0x80D75FFF, 0x000B0000, 0x0 },
66 static const struct ddi_buf_trans hsw_ddi_translations_fdi
[] = {
67 { 0x00FFFFFF, 0x0007000E, 0x0 },
68 { 0x00D75FFF, 0x000F000A, 0x0 },
69 { 0x00C30FFF, 0x00060006, 0x0 },
70 { 0x00AAAFFF, 0x001E0000, 0x0 },
71 { 0x00FFFFFF, 0x000F000A, 0x0 },
72 { 0x00D75FFF, 0x00160004, 0x0 },
73 { 0x00C30FFF, 0x001E0000, 0x0 },
74 { 0x00FFFFFF, 0x00060006, 0x0 },
75 { 0x00D75FFF, 0x001E0000, 0x0 },
78 static const struct ddi_buf_trans hsw_ddi_translations_hdmi
[] = {
79 /* Idx NT mV d T mV d db */
80 { 0x00FFFFFF, 0x0006000E, 0x0 },/* 0: 400 400 0 */
81 { 0x00E79FFF, 0x000E000C, 0x0 },/* 1: 400 500 2 */
82 { 0x00D75FFF, 0x0005000A, 0x0 },/* 2: 400 600 3.5 */
83 { 0x00FFFFFF, 0x0005000A, 0x0 },/* 3: 600 600 0 */
84 { 0x00E79FFF, 0x001D0007, 0x0 },/* 4: 600 750 2 */
85 { 0x00D75FFF, 0x000C0004, 0x0 },/* 5: 600 900 3.5 */
86 { 0x00FFFFFF, 0x00040006, 0x0 },/* 6: 800 800 0 */
87 { 0x80E79FFF, 0x00030002, 0x0 },/* 7: 800 1000 2 */
88 { 0x00FFFFFF, 0x00140005, 0x0 },/* 8: 850 850 0 */
89 { 0x00FFFFFF, 0x000C0004, 0x0 },/* 9: 900 900 0 */
90 { 0x00FFFFFF, 0x001C0003, 0x0 },/* 10: 950 950 0 */
91 { 0x80FFFFFF, 0x00030002, 0x0 },/* 11: 1000 1000 0 */
94 static const struct ddi_buf_trans bdw_ddi_translations_edp
[] = {
95 { 0x00FFFFFF, 0x00000012, 0x0 },
96 { 0x00EBAFFF, 0x00020011, 0x0 },
97 { 0x00C71FFF, 0x0006000F, 0x0 },
98 { 0x00AAAFFF, 0x000E000A, 0x0 },
99 { 0x00FFFFFF, 0x00020011, 0x0 },
100 { 0x00DB6FFF, 0x0005000F, 0x0 },
101 { 0x00BEEFFF, 0x000A000C, 0x0 },
102 { 0x00FFFFFF, 0x0005000F, 0x0 },
103 { 0x00DB6FFF, 0x000A000C, 0x0 },
106 static const struct ddi_buf_trans bdw_ddi_translations_dp
[] = {
107 { 0x00FFFFFF, 0x0007000E, 0x0 },
108 { 0x00D75FFF, 0x000E000A, 0x0 },
109 { 0x00BEFFFF, 0x00140006, 0x0 },
110 { 0x80B2CFFF, 0x001B0002, 0x0 },
111 { 0x00FFFFFF, 0x000E000A, 0x0 },
112 { 0x00DB6FFF, 0x00160005, 0x0 },
113 { 0x80C71FFF, 0x001A0002, 0x0 },
114 { 0x00F7DFFF, 0x00180004, 0x0 },
115 { 0x80D75FFF, 0x001B0002, 0x0 },
118 static const struct ddi_buf_trans bdw_ddi_translations_fdi
[] = {
119 { 0x00FFFFFF, 0x0001000E, 0x0 },
120 { 0x00D75FFF, 0x0004000A, 0x0 },
121 { 0x00C30FFF, 0x00070006, 0x0 },
122 { 0x00AAAFFF, 0x000C0000, 0x0 },
123 { 0x00FFFFFF, 0x0004000A, 0x0 },
124 { 0x00D75FFF, 0x00090004, 0x0 },
125 { 0x00C30FFF, 0x000C0000, 0x0 },
126 { 0x00FFFFFF, 0x00070006, 0x0 },
127 { 0x00D75FFF, 0x000C0000, 0x0 },
130 static const struct ddi_buf_trans bdw_ddi_translations_hdmi
[] = {
131 /* Idx NT mV d T mV df db */
132 { 0x00FFFFFF, 0x0007000E, 0x0 },/* 0: 400 400 0 */
133 { 0x00D75FFF, 0x000E000A, 0x0 },/* 1: 400 600 3.5 */
134 { 0x00BEFFFF, 0x00140006, 0x0 },/* 2: 400 800 6 */
135 { 0x00FFFFFF, 0x0009000D, 0x0 },/* 3: 450 450 0 */
136 { 0x00FFFFFF, 0x000E000A, 0x0 },/* 4: 600 600 0 */
137 { 0x00D7FFFF, 0x00140006, 0x0 },/* 5: 600 800 2.5 */
138 { 0x80CB2FFF, 0x001B0002, 0x0 },/* 6: 600 1000 4.5 */
139 { 0x00FFFFFF, 0x00140006, 0x0 },/* 7: 800 800 0 */
140 { 0x80E79FFF, 0x001B0002, 0x0 },/* 8: 800 1000 2 */
141 { 0x80FFFFFF, 0x001B0002, 0x0 },/* 9: 1000 1000 0 */
144 /* Skylake H and S */
145 static const struct ddi_buf_trans skl_ddi_translations_dp
[] = {
146 { 0x00002016, 0x000000A0, 0x0 },
147 { 0x00005012, 0x0000009B, 0x0 },
148 { 0x00007011, 0x00000088, 0x0 },
149 { 0x80009010, 0x000000C0, 0x1 },
150 { 0x00002016, 0x0000009B, 0x0 },
151 { 0x00005012, 0x00000088, 0x0 },
152 { 0x80007011, 0x000000C0, 0x1 },
153 { 0x00002016, 0x000000DF, 0x0 },
154 { 0x80005012, 0x000000C0, 0x1 },
158 static const struct ddi_buf_trans skl_u_ddi_translations_dp
[] = {
159 { 0x0000201B, 0x000000A2, 0x0 },
160 { 0x00005012, 0x00000088, 0x0 },
161 { 0x80007011, 0x000000CD, 0x1 },
162 { 0x80009010, 0x000000C0, 0x1 },
163 { 0x0000201B, 0x0000009D, 0x0 },
164 { 0x80005012, 0x000000C0, 0x1 },
165 { 0x80007011, 0x000000C0, 0x1 },
166 { 0x00002016, 0x00000088, 0x0 },
167 { 0x80005012, 0x000000C0, 0x1 },
171 static const struct ddi_buf_trans skl_y_ddi_translations_dp
[] = {
172 { 0x00000018, 0x000000A2, 0x0 },
173 { 0x00005012, 0x00000088, 0x0 },
174 { 0x80007011, 0x000000CD, 0x3 },
175 { 0x80009010, 0x000000C0, 0x3 },
176 { 0x00000018, 0x0000009D, 0x0 },
177 { 0x80005012, 0x000000C0, 0x3 },
178 { 0x80007011, 0x000000C0, 0x3 },
179 { 0x00000018, 0x00000088, 0x0 },
180 { 0x80005012, 0x000000C0, 0x3 },
183 /* Kabylake H and S */
184 static const struct ddi_buf_trans kbl_ddi_translations_dp
[] = {
185 { 0x00002016, 0x000000A0, 0x0 },
186 { 0x00005012, 0x0000009B, 0x0 },
187 { 0x00007011, 0x00000088, 0x0 },
188 { 0x80009010, 0x000000C0, 0x1 },
189 { 0x00002016, 0x0000009B, 0x0 },
190 { 0x00005012, 0x00000088, 0x0 },
191 { 0x80007011, 0x000000C0, 0x1 },
192 { 0x00002016, 0x00000097, 0x0 },
193 { 0x80005012, 0x000000C0, 0x1 },
197 static const struct ddi_buf_trans kbl_u_ddi_translations_dp
[] = {
198 { 0x0000201B, 0x000000A1, 0x0 },
199 { 0x00005012, 0x00000088, 0x0 },
200 { 0x80007011, 0x000000CD, 0x3 },
201 { 0x80009010, 0x000000C0, 0x3 },
202 { 0x0000201B, 0x0000009D, 0x0 },
203 { 0x80005012, 0x000000C0, 0x3 },
204 { 0x80007011, 0x000000C0, 0x3 },
205 { 0x00002016, 0x0000004F, 0x0 },
206 { 0x80005012, 0x000000C0, 0x3 },
210 static const struct ddi_buf_trans kbl_y_ddi_translations_dp
[] = {
211 { 0x00001017, 0x000000A1, 0x0 },
212 { 0x00005012, 0x00000088, 0x0 },
213 { 0x80007011, 0x000000CD, 0x3 },
214 { 0x8000800F, 0x000000C0, 0x3 },
215 { 0x00001017, 0x0000009D, 0x0 },
216 { 0x80005012, 0x000000C0, 0x3 },
217 { 0x80007011, 0x000000C0, 0x3 },
218 { 0x00001017, 0x0000004C, 0x0 },
219 { 0x80005012, 0x000000C0, 0x3 },
223 * Skylake/Kabylake H and S
224 * eDP 1.4 low vswing translation parameters
226 static const struct ddi_buf_trans skl_ddi_translations_edp
[] = {
227 { 0x00000018, 0x000000A8, 0x0 },
228 { 0x00004013, 0x000000A9, 0x0 },
229 { 0x00007011, 0x000000A2, 0x0 },
230 { 0x00009010, 0x0000009C, 0x0 },
231 { 0x00000018, 0x000000A9, 0x0 },
232 { 0x00006013, 0x000000A2, 0x0 },
233 { 0x00007011, 0x000000A6, 0x0 },
234 { 0x00000018, 0x000000AB, 0x0 },
235 { 0x00007013, 0x0000009F, 0x0 },
236 { 0x00000018, 0x000000DF, 0x0 },
241 * eDP 1.4 low vswing translation parameters
243 static const struct ddi_buf_trans skl_u_ddi_translations_edp
[] = {
244 { 0x00000018, 0x000000A8, 0x0 },
245 { 0x00004013, 0x000000A9, 0x0 },
246 { 0x00007011, 0x000000A2, 0x0 },
247 { 0x00009010, 0x0000009C, 0x0 },
248 { 0x00000018, 0x000000A9, 0x0 },
249 { 0x00006013, 0x000000A2, 0x0 },
250 { 0x00007011, 0x000000A6, 0x0 },
251 { 0x00002016, 0x000000AB, 0x0 },
252 { 0x00005013, 0x0000009F, 0x0 },
253 { 0x00000018, 0x000000DF, 0x0 },
258 * eDP 1.4 low vswing translation parameters
260 static const struct ddi_buf_trans skl_y_ddi_translations_edp
[] = {
261 { 0x00000018, 0x000000A8, 0x0 },
262 { 0x00004013, 0x000000AB, 0x0 },
263 { 0x00007011, 0x000000A4, 0x0 },
264 { 0x00009010, 0x000000DF, 0x0 },
265 { 0x00000018, 0x000000AA, 0x0 },
266 { 0x00006013, 0x000000A4, 0x0 },
267 { 0x00007011, 0x0000009D, 0x0 },
268 { 0x00000018, 0x000000A0, 0x0 },
269 { 0x00006012, 0x000000DF, 0x0 },
270 { 0x00000018, 0x0000008A, 0x0 },
273 /* Skylake/Kabylake U, H and S */
274 static const struct ddi_buf_trans skl_ddi_translations_hdmi
[] = {
275 { 0x00000018, 0x000000AC, 0x0 },
276 { 0x00005012, 0x0000009D, 0x0 },
277 { 0x00007011, 0x00000088, 0x0 },
278 { 0x00000018, 0x000000A1, 0x0 },
279 { 0x00000018, 0x00000098, 0x0 },
280 { 0x00004013, 0x00000088, 0x0 },
281 { 0x80006012, 0x000000CD, 0x1 },
282 { 0x00000018, 0x000000DF, 0x0 },
283 { 0x80003015, 0x000000CD, 0x1 }, /* Default */
284 { 0x80003015, 0x000000C0, 0x1 },
285 { 0x80000018, 0x000000C0, 0x1 },
288 /* Skylake/Kabylake Y */
289 static const struct ddi_buf_trans skl_y_ddi_translations_hdmi
[] = {
290 { 0x00000018, 0x000000A1, 0x0 },
291 { 0x00005012, 0x000000DF, 0x0 },
292 { 0x80007011, 0x000000CB, 0x3 },
293 { 0x00000018, 0x000000A4, 0x0 },
294 { 0x00000018, 0x0000009D, 0x0 },
295 { 0x00004013, 0x00000080, 0x0 },
296 { 0x80006013, 0x000000C0, 0x3 },
297 { 0x00000018, 0x0000008A, 0x0 },
298 { 0x80003015, 0x000000C0, 0x3 }, /* Default */
299 { 0x80003015, 0x000000C0, 0x3 },
300 { 0x80000018, 0x000000C0, 0x3 },
303 struct bxt_ddi_buf_trans
{
304 u32 margin
; /* swing value */
305 u32 scale
; /* scale value */
306 u32 enable
; /* scale enable */
308 bool default_index
; /* true if the entry represents default value */
311 static const struct bxt_ddi_buf_trans bxt_ddi_translations_dp
[] = {
312 /* Idx NT mV diff db */
313 { 52, 0x9A, 0, 128, true }, /* 0: 400 0 */
314 { 78, 0x9A, 0, 85, false }, /* 1: 400 3.5 */
315 { 104, 0x9A, 0, 64, false }, /* 2: 400 6 */
316 { 154, 0x9A, 0, 43, false }, /* 3: 400 9.5 */
317 { 77, 0x9A, 0, 128, false }, /* 4: 600 0 */
318 { 116, 0x9A, 0, 85, false }, /* 5: 600 3.5 */
319 { 154, 0x9A, 0, 64, false }, /* 6: 600 6 */
320 { 102, 0x9A, 0, 128, false }, /* 7: 800 0 */
321 { 154, 0x9A, 0, 85, false }, /* 8: 800 3.5 */
322 { 154, 0x9A, 1, 128, false }, /* 9: 1200 0 */
325 static const struct bxt_ddi_buf_trans bxt_ddi_translations_edp
[] = {
326 /* Idx NT mV diff db */
327 { 26, 0, 0, 128, false }, /* 0: 200 0 */
328 { 38, 0, 0, 112, false }, /* 1: 200 1.5 */
329 { 48, 0, 0, 96, false }, /* 2: 200 4 */
330 { 54, 0, 0, 69, false }, /* 3: 200 6 */
331 { 32, 0, 0, 128, false }, /* 4: 250 0 */
332 { 48, 0, 0, 104, false }, /* 5: 250 1.5 */
333 { 54, 0, 0, 85, false }, /* 6: 250 4 */
334 { 43, 0, 0, 128, false }, /* 7: 300 0 */
335 { 54, 0, 0, 101, false }, /* 8: 300 1.5 */
336 { 48, 0, 0, 128, false }, /* 9: 300 0 */
339 /* BSpec has 2 recommended values - entries 0 and 8.
340 * Using the entry with higher vswing.
342 static const struct bxt_ddi_buf_trans bxt_ddi_translations_hdmi
[] = {
343 /* Idx NT mV diff db */
344 { 52, 0x9A, 0, 128, false }, /* 0: 400 0 */
345 { 52, 0x9A, 0, 85, false }, /* 1: 400 3.5 */
346 { 52, 0x9A, 0, 64, false }, /* 2: 400 6 */
347 { 42, 0x9A, 0, 43, false }, /* 3: 400 9.5 */
348 { 77, 0x9A, 0, 128, false }, /* 4: 600 0 */
349 { 77, 0x9A, 0, 85, false }, /* 5: 600 3.5 */
350 { 77, 0x9A, 0, 64, false }, /* 6: 600 6 */
351 { 102, 0x9A, 0, 128, false }, /* 7: 800 0 */
352 { 102, 0x9A, 0, 85, false }, /* 8: 800 3.5 */
353 { 154, 0x9A, 1, 128, true }, /* 9: 1200 0 */
356 struct cnl_ddi_buf_trans
{
359 u32 dw4_cursor_coeff
;
360 u32 dw4_post_cursor_2
;
361 u32 dw4_post_cursor_1
;
364 /* Voltage Swing Programming for VccIO 0.85V for DP */
365 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_85V
[] = {
366 /* NT mV Trans mV db */
367 { 0xA, 0x5D, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
368 { 0xA, 0x6A, 0x38, 0x00, 0x07 }, /* 350 500 3.1 */
369 { 0xB, 0x7A, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */
370 { 0x6, 0x7C, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */
371 { 0xA, 0x69, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
372 { 0xB, 0x7A, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */
373 { 0x6, 0x7C, 0x30, 0x00, 0x0F }, /* 500 900 5.1 */
374 { 0xB, 0x7D, 0x3C, 0x00, 0x03 }, /* 650 725 0.9 */
375 { 0x6, 0x7C, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */
376 { 0x6, 0x7B, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
379 /* Voltage Swing Programming for VccIO 0.85V for HDMI */
380 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_85V
[] = {
381 /* NT mV Trans mV db */
382 { 0xA, 0x60, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */
383 { 0xB, 0x73, 0x36, 0x00, 0x09 }, /* 450 650 3.2 */
384 { 0x6, 0x7F, 0x31, 0x00, 0x0E }, /* 450 850 5.5 */
385 { 0xB, 0x73, 0x3F, 0x00, 0x00 }, /* 650 650 0.0 */
386 { 0x6, 0x7F, 0x37, 0x00, 0x08 }, /* 650 850 2.3 */
387 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 850 850 0.0 */
388 { 0x6, 0x7F, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
391 /* Voltage Swing Programming for VccIO 0.85V for eDP */
392 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_85V
[] = {
393 /* NT mV Trans mV db */
394 { 0xA, 0x66, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */
395 { 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */
396 { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */
397 { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */
398 { 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */
399 { 0xA, 0x66, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */
400 { 0xB, 0x70, 0x3C, 0x00, 0x03 }, /* 460 600 2.3 */
401 { 0xC, 0x75, 0x3C, 0x00, 0x03 }, /* 537 700 2.3 */
402 { 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
405 /* Voltage Swing Programming for VccIO 0.95V for DP */
406 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_0_95V
[] = {
407 /* NT mV Trans mV db */
408 { 0xA, 0x5D, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
409 { 0xA, 0x6A, 0x38, 0x00, 0x07 }, /* 350 500 3.1 */
410 { 0xB, 0x7A, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */
411 { 0x6, 0x7C, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */
412 { 0xA, 0x69, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
413 { 0xB, 0x7A, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */
414 { 0x6, 0x7C, 0x30, 0x00, 0x0F }, /* 500 900 5.1 */
415 { 0xB, 0x7D, 0x3C, 0x00, 0x03 }, /* 650 725 0.9 */
416 { 0x6, 0x7C, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */
417 { 0x6, 0x7B, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
420 /* Voltage Swing Programming for VccIO 0.95V for HDMI */
421 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_0_95V
[] = {
422 /* NT mV Trans mV db */
423 { 0xA, 0x5C, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
424 { 0xB, 0x69, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */
425 { 0x5, 0x76, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */
426 { 0xA, 0x5E, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */
427 { 0xB, 0x69, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */
428 { 0xB, 0x79, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
429 { 0x6, 0x7D, 0x32, 0x00, 0x0D }, /* 600 1000 4.4 */
430 { 0x5, 0x76, 0x3F, 0x00, 0x00 }, /* 800 800 0.0 */
431 { 0x6, 0x7D, 0x39, 0x00, 0x06 }, /* 800 1000 1.9 */
432 { 0x6, 0x7F, 0x39, 0x00, 0x06 }, /* 850 1050 1.8 */
433 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */
436 /* Voltage Swing Programming for VccIO 0.95V for eDP */
437 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_0_95V
[] = {
438 /* NT mV Trans mV db */
439 { 0xA, 0x61, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */
440 { 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */
441 { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */
442 { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */
443 { 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */
444 { 0xA, 0x61, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */
445 { 0xB, 0x68, 0x39, 0x00, 0x06 }, /* 460 600 2.3 */
446 { 0xC, 0x6E, 0x39, 0x00, 0x06 }, /* 537 700 2.3 */
447 { 0x4, 0x7F, 0x3A, 0x00, 0x05 }, /* 460 600 2.3 */
448 { 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
451 /* Voltage Swing Programming for VccIO 1.05V for DP */
452 static const struct cnl_ddi_buf_trans cnl_ddi_translations_dp_1_05V
[] = {
453 /* NT mV Trans mV db */
454 { 0xA, 0x58, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
455 { 0xB, 0x64, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */
456 { 0x5, 0x70, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */
457 { 0x6, 0x7F, 0x2C, 0x00, 0x13 }, /* 400 1050 8.4 */
458 { 0xB, 0x64, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */
459 { 0x5, 0x73, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
460 { 0x6, 0x7F, 0x30, 0x00, 0x0F }, /* 550 1050 5.6 */
461 { 0x5, 0x76, 0x3E, 0x00, 0x01 }, /* 850 900 0.5 */
462 { 0x6, 0x7F, 0x36, 0x00, 0x09 }, /* 750 1050 2.9 */
463 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */
466 /* Voltage Swing Programming for VccIO 1.05V for HDMI */
467 static const struct cnl_ddi_buf_trans cnl_ddi_translations_hdmi_1_05V
[] = {
468 /* NT mV Trans mV db */
469 { 0xA, 0x58, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
470 { 0xB, 0x64, 0x37, 0x00, 0x08 }, /* 400 600 3.5 */
471 { 0x5, 0x70, 0x31, 0x00, 0x0E }, /* 400 800 6.0 */
472 { 0xA, 0x5B, 0x3F, 0x00, 0x00 }, /* 450 450 0.0 */
473 { 0xB, 0x64, 0x3F, 0x00, 0x00 }, /* 600 600 0.0 */
474 { 0x5, 0x73, 0x35, 0x00, 0x0A }, /* 600 850 3.0 */
475 { 0x6, 0x7C, 0x32, 0x00, 0x0D }, /* 600 1000 4.4 */
476 { 0x5, 0x70, 0x3F, 0x00, 0x00 }, /* 800 800 0.0 */
477 { 0x6, 0x7C, 0x39, 0x00, 0x06 }, /* 800 1000 1.9 */
478 { 0x6, 0x7F, 0x39, 0x00, 0x06 }, /* 850 1050 1.8 */
479 { 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 1050 1050 0.0 */
482 /* Voltage Swing Programming for VccIO 1.05V for eDP */
483 static const struct cnl_ddi_buf_trans cnl_ddi_translations_edp_1_05V
[] = {
484 /* NT mV Trans mV db */
485 { 0xA, 0x5E, 0x3A, 0x00, 0x05 }, /* 384 500 2.3 */
486 { 0x0, 0x7F, 0x38, 0x00, 0x07 }, /* 153 200 2.3 */
487 { 0x8, 0x7F, 0x38, 0x00, 0x07 }, /* 192 250 2.3 */
488 { 0x1, 0x7F, 0x38, 0x00, 0x07 }, /* 230 300 2.3 */
489 { 0x9, 0x7F, 0x38, 0x00, 0x07 }, /* 269 350 2.3 */
490 { 0xA, 0x5E, 0x3C, 0x00, 0x03 }, /* 446 500 1.0 */
491 { 0xB, 0x64, 0x39, 0x00, 0x06 }, /* 460 600 2.3 */
492 { 0xE, 0x6A, 0x39, 0x00, 0x06 }, /* 537 700 2.3 */
493 { 0x2, 0x7F, 0x3F, 0x00, 0x00 }, /* 400 400 0.0 */
496 enum port
intel_ddi_get_encoder_port(struct intel_encoder
*encoder
)
498 switch (encoder
->type
) {
499 case INTEL_OUTPUT_DP_MST
:
500 return enc_to_mst(&encoder
->base
)->primary
->port
;
501 case INTEL_OUTPUT_DP
:
502 case INTEL_OUTPUT_EDP
:
503 case INTEL_OUTPUT_HDMI
:
504 case INTEL_OUTPUT_UNKNOWN
:
505 return enc_to_dig_port(&encoder
->base
)->port
;
506 case INTEL_OUTPUT_ANALOG
:
509 MISSING_CASE(encoder
->type
);
514 static const struct ddi_buf_trans
*
515 bdw_get_buf_trans_edp(struct drm_i915_private
*dev_priv
, int *n_entries
)
517 if (dev_priv
->vbt
.edp
.low_vswing
) {
518 *n_entries
= ARRAY_SIZE(bdw_ddi_translations_edp
);
519 return bdw_ddi_translations_edp
;
521 *n_entries
= ARRAY_SIZE(bdw_ddi_translations_dp
);
522 return bdw_ddi_translations_dp
;
526 static const struct ddi_buf_trans
*
527 skl_get_buf_trans_dp(struct drm_i915_private
*dev_priv
, int *n_entries
)
529 if (IS_SKL_ULX(dev_priv
)) {
530 *n_entries
= ARRAY_SIZE(skl_y_ddi_translations_dp
);
531 return skl_y_ddi_translations_dp
;
532 } else if (IS_SKL_ULT(dev_priv
)) {
533 *n_entries
= ARRAY_SIZE(skl_u_ddi_translations_dp
);
534 return skl_u_ddi_translations_dp
;
536 *n_entries
= ARRAY_SIZE(skl_ddi_translations_dp
);
537 return skl_ddi_translations_dp
;
541 static const struct ddi_buf_trans
*
542 kbl_get_buf_trans_dp(struct drm_i915_private
*dev_priv
, int *n_entries
)
544 if (IS_KBL_ULX(dev_priv
)) {
545 *n_entries
= ARRAY_SIZE(kbl_y_ddi_translations_dp
);
546 return kbl_y_ddi_translations_dp
;
547 } else if (IS_KBL_ULT(dev_priv
) || IS_CFL_ULT(dev_priv
)) {
548 *n_entries
= ARRAY_SIZE(kbl_u_ddi_translations_dp
);
549 return kbl_u_ddi_translations_dp
;
551 *n_entries
= ARRAY_SIZE(kbl_ddi_translations_dp
);
552 return kbl_ddi_translations_dp
;
556 static const struct ddi_buf_trans
*
557 skl_get_buf_trans_edp(struct drm_i915_private
*dev_priv
, int *n_entries
)
559 if (dev_priv
->vbt
.edp
.low_vswing
) {
560 if (IS_SKL_ULX(dev_priv
) || IS_KBL_ULX(dev_priv
)) {
561 *n_entries
= ARRAY_SIZE(skl_y_ddi_translations_edp
);
562 return skl_y_ddi_translations_edp
;
563 } else if (IS_SKL_ULT(dev_priv
) || IS_KBL_ULT(dev_priv
) ||
564 IS_CFL_ULT(dev_priv
)) {
565 *n_entries
= ARRAY_SIZE(skl_u_ddi_translations_edp
);
566 return skl_u_ddi_translations_edp
;
568 *n_entries
= ARRAY_SIZE(skl_ddi_translations_edp
);
569 return skl_ddi_translations_edp
;
573 if (IS_KABYLAKE(dev_priv
) || IS_COFFEELAKE(dev_priv
))
574 return kbl_get_buf_trans_dp(dev_priv
, n_entries
);
576 return skl_get_buf_trans_dp(dev_priv
, n_entries
);
579 static const struct ddi_buf_trans
*
580 skl_get_buf_trans_hdmi(struct drm_i915_private
*dev_priv
, int *n_entries
)
582 if (IS_SKL_ULX(dev_priv
) || IS_KBL_ULX(dev_priv
)) {
583 *n_entries
= ARRAY_SIZE(skl_y_ddi_translations_hdmi
);
584 return skl_y_ddi_translations_hdmi
;
586 *n_entries
= ARRAY_SIZE(skl_ddi_translations_hdmi
);
587 return skl_ddi_translations_hdmi
;
591 static int intel_ddi_hdmi_level(struct drm_i915_private
*dev_priv
, enum port port
)
595 int hdmi_default_entry
;
597 hdmi_level
= dev_priv
->vbt
.ddi_port_info
[port
].hdmi_level_shift
;
599 if (IS_GEN9_LP(dev_priv
))
602 if (IS_GEN9_BC(dev_priv
)) {
603 skl_get_buf_trans_hdmi(dev_priv
, &n_hdmi_entries
);
604 hdmi_default_entry
= 8;
605 } else if (IS_BROADWELL(dev_priv
)) {
606 n_hdmi_entries
= ARRAY_SIZE(bdw_ddi_translations_hdmi
);
607 hdmi_default_entry
= 7;
608 } else if (IS_HASWELL(dev_priv
)) {
609 n_hdmi_entries
= ARRAY_SIZE(hsw_ddi_translations_hdmi
);
610 hdmi_default_entry
= 6;
612 WARN(1, "ddi translation table missing\n");
613 n_hdmi_entries
= ARRAY_SIZE(bdw_ddi_translations_hdmi
);
614 hdmi_default_entry
= 7;
617 /* Choose a good default if VBT is badly populated */
618 if (hdmi_level
== HDMI_LEVEL_SHIFT_UNKNOWN
||
619 hdmi_level
>= n_hdmi_entries
)
620 hdmi_level
= hdmi_default_entry
;
625 static const struct ddi_buf_trans
*
626 intel_ddi_get_buf_trans_dp(struct drm_i915_private
*dev_priv
,
629 if (IS_KABYLAKE(dev_priv
) || IS_COFFEELAKE(dev_priv
)) {
630 return kbl_get_buf_trans_dp(dev_priv
, n_entries
);
631 } else if (IS_SKYLAKE(dev_priv
)) {
632 return skl_get_buf_trans_dp(dev_priv
, n_entries
);
633 } else if (IS_BROADWELL(dev_priv
)) {
634 *n_entries
= ARRAY_SIZE(bdw_ddi_translations_dp
);
635 return bdw_ddi_translations_dp
;
636 } else if (IS_HASWELL(dev_priv
)) {
637 *n_entries
= ARRAY_SIZE(hsw_ddi_translations_dp
);
638 return hsw_ddi_translations_dp
;
645 static const struct ddi_buf_trans
*
646 intel_ddi_get_buf_trans_edp(struct drm_i915_private
*dev_priv
,
649 if (IS_GEN9_BC(dev_priv
)) {
650 return skl_get_buf_trans_edp(dev_priv
, n_entries
);
651 } else if (IS_BROADWELL(dev_priv
)) {
652 return bdw_get_buf_trans_edp(dev_priv
, n_entries
);
653 } else if (IS_HASWELL(dev_priv
)) {
654 *n_entries
= ARRAY_SIZE(hsw_ddi_translations_dp
);
655 return hsw_ddi_translations_dp
;
662 static const struct ddi_buf_trans
*
663 intel_ddi_get_buf_trans_fdi(struct drm_i915_private
*dev_priv
,
666 if (IS_BROADWELL(dev_priv
)) {
667 *n_entries
= ARRAY_SIZE(hsw_ddi_translations_fdi
);
668 return hsw_ddi_translations_fdi
;
669 } else if (IS_HASWELL(dev_priv
)) {
670 *n_entries
= ARRAY_SIZE(hsw_ddi_translations_fdi
);
671 return hsw_ddi_translations_fdi
;
679 * Starting with Haswell, DDI port buffers must be programmed with correct
680 * values in advance. This function programs the correct values for
681 * DP/eDP/FDI use cases.
683 static void intel_prepare_dp_ddi_buffers(struct intel_encoder
*encoder
)
685 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
688 enum port port
= intel_ddi_get_encoder_port(encoder
);
689 const struct ddi_buf_trans
*ddi_translations
;
691 if (IS_GEN9_LP(dev_priv
))
694 switch (encoder
->type
) {
695 case INTEL_OUTPUT_EDP
:
696 ddi_translations
= intel_ddi_get_buf_trans_edp(dev_priv
,
699 case INTEL_OUTPUT_DP
:
700 ddi_translations
= intel_ddi_get_buf_trans_dp(dev_priv
,
703 case INTEL_OUTPUT_ANALOG
:
704 ddi_translations
= intel_ddi_get_buf_trans_fdi(dev_priv
,
708 MISSING_CASE(encoder
->type
);
712 if (IS_GEN9_BC(dev_priv
)) {
713 /* If we're boosting the current, set bit 31 of trans1 */
714 if (dev_priv
->vbt
.ddi_port_info
[port
].dp_boost_level
)
715 iboost_bit
= DDI_BUF_BALANCE_LEG_ENABLE
;
717 if (WARN_ON(encoder
->type
== INTEL_OUTPUT_EDP
&&
718 port
!= PORT_A
&& port
!= PORT_E
&&
723 for (i
= 0; i
< n_entries
; i
++) {
724 I915_WRITE(DDI_BUF_TRANS_LO(port
, i
),
725 ddi_translations
[i
].trans1
| iboost_bit
);
726 I915_WRITE(DDI_BUF_TRANS_HI(port
, i
),
727 ddi_translations
[i
].trans2
);
732 * Starting with Haswell, DDI port buffers must be programmed with correct
733 * values in advance. This function programs the correct values for
734 * HDMI/DVI use cases.
736 static void intel_prepare_hdmi_ddi_buffers(struct intel_encoder
*encoder
)
738 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
740 int n_hdmi_entries
, hdmi_level
;
741 enum port port
= intel_ddi_get_encoder_port(encoder
);
742 const struct ddi_buf_trans
*ddi_translations_hdmi
;
744 if (IS_GEN9_LP(dev_priv
))
747 hdmi_level
= intel_ddi_hdmi_level(dev_priv
, port
);
749 if (IS_GEN9_BC(dev_priv
)) {
750 ddi_translations_hdmi
= skl_get_buf_trans_hdmi(dev_priv
, &n_hdmi_entries
);
752 /* If we're boosting the current, set bit 31 of trans1 */
753 if (dev_priv
->vbt
.ddi_port_info
[port
].hdmi_boost_level
)
754 iboost_bit
= DDI_BUF_BALANCE_LEG_ENABLE
;
755 } else if (IS_BROADWELL(dev_priv
)) {
756 ddi_translations_hdmi
= bdw_ddi_translations_hdmi
;
757 n_hdmi_entries
= ARRAY_SIZE(bdw_ddi_translations_hdmi
);
758 } else if (IS_HASWELL(dev_priv
)) {
759 ddi_translations_hdmi
= hsw_ddi_translations_hdmi
;
760 n_hdmi_entries
= ARRAY_SIZE(hsw_ddi_translations_hdmi
);
762 WARN(1, "ddi translation table missing\n");
763 ddi_translations_hdmi
= bdw_ddi_translations_hdmi
;
764 n_hdmi_entries
= ARRAY_SIZE(bdw_ddi_translations_hdmi
);
767 /* Entry 9 is for HDMI: */
768 I915_WRITE(DDI_BUF_TRANS_LO(port
, 9),
769 ddi_translations_hdmi
[hdmi_level
].trans1
| iboost_bit
);
770 I915_WRITE(DDI_BUF_TRANS_HI(port
, 9),
771 ddi_translations_hdmi
[hdmi_level
].trans2
);
774 static void intel_wait_ddi_buf_idle(struct drm_i915_private
*dev_priv
,
777 i915_reg_t reg
= DDI_BUF_CTL(port
);
780 for (i
= 0; i
< 16; i
++) {
782 if (I915_READ(reg
) & DDI_BUF_IS_IDLE
)
785 DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port
));
788 static uint32_t hsw_pll_to_ddi_pll_sel(struct intel_shared_dpll
*pll
)
792 return PORT_CLK_SEL_WRPLL1
;
794 return PORT_CLK_SEL_WRPLL2
;
796 return PORT_CLK_SEL_SPLL
;
797 case DPLL_ID_LCPLL_810
:
798 return PORT_CLK_SEL_LCPLL_810
;
799 case DPLL_ID_LCPLL_1350
:
800 return PORT_CLK_SEL_LCPLL_1350
;
801 case DPLL_ID_LCPLL_2700
:
802 return PORT_CLK_SEL_LCPLL_2700
;
804 MISSING_CASE(pll
->id
);
805 return PORT_CLK_SEL_NONE
;
809 /* Starting with Haswell, different DDI ports can work in FDI mode for
810 * connection to the PCH-located connectors. For this, it is necessary to train
811 * both the DDI port and PCH receiver for the desired DDI buffer settings.
813 * The recommended port to work in FDI mode is DDI E, which we use here. Also,
814 * please note that when FDI mode is active on DDI E, it shares 2 lines with
815 * DDI A (which is used for eDP)
818 void hsw_fdi_link_train(struct intel_crtc
*crtc
,
819 const struct intel_crtc_state
*crtc_state
)
821 struct drm_device
*dev
= crtc
->base
.dev
;
822 struct drm_i915_private
*dev_priv
= to_i915(dev
);
823 struct intel_encoder
*encoder
;
824 u32 temp
, i
, rx_ctl_val
, ddi_pll_sel
;
826 for_each_encoder_on_crtc(dev
, &crtc
->base
, encoder
) {
827 WARN_ON(encoder
->type
!= INTEL_OUTPUT_ANALOG
);
828 intel_prepare_dp_ddi_buffers(encoder
);
831 /* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the
832 * mode set "sequence for CRT port" document:
833 * - TP1 to TP2 time with the default value
836 * WaFDIAutoLinkSetTimingOverrride:hsw
838 I915_WRITE(FDI_RX_MISC(PIPE_A
), FDI_RX_PWRDN_LANE1_VAL(2) |
839 FDI_RX_PWRDN_LANE0_VAL(2) |
840 FDI_RX_TP1_TO_TP2_48
| FDI_RX_FDI_DELAY_90
);
842 /* Enable the PCH Receiver FDI PLL */
843 rx_ctl_val
= dev_priv
->fdi_rx_config
| FDI_RX_ENHANCE_FRAME_ENABLE
|
845 FDI_DP_PORT_WIDTH(crtc_state
->fdi_lanes
);
846 I915_WRITE(FDI_RX_CTL(PIPE_A
), rx_ctl_val
);
847 POSTING_READ(FDI_RX_CTL(PIPE_A
));
850 /* Switch from Rawclk to PCDclk */
851 rx_ctl_val
|= FDI_PCDCLK
;
852 I915_WRITE(FDI_RX_CTL(PIPE_A
), rx_ctl_val
);
854 /* Configure Port Clock Select */
855 ddi_pll_sel
= hsw_pll_to_ddi_pll_sel(crtc_state
->shared_dpll
);
856 I915_WRITE(PORT_CLK_SEL(PORT_E
), ddi_pll_sel
);
857 WARN_ON(ddi_pll_sel
!= PORT_CLK_SEL_SPLL
);
859 /* Start the training iterating through available voltages and emphasis,
860 * testing each value twice. */
861 for (i
= 0; i
< ARRAY_SIZE(hsw_ddi_translations_fdi
) * 2; i
++) {
862 /* Configure DP_TP_CTL with auto-training */
863 I915_WRITE(DP_TP_CTL(PORT_E
),
864 DP_TP_CTL_FDI_AUTOTRAIN
|
865 DP_TP_CTL_ENHANCED_FRAME_ENABLE
|
866 DP_TP_CTL_LINK_TRAIN_PAT1
|
869 /* Configure and enable DDI_BUF_CTL for DDI E with next voltage.
870 * DDI E does not support port reversal, the functionality is
871 * achieved on the PCH side in FDI_RX_CTL, so no need to set the
872 * port reversal bit */
873 I915_WRITE(DDI_BUF_CTL(PORT_E
),
875 ((crtc_state
->fdi_lanes
- 1) << 1) |
876 DDI_BUF_TRANS_SELECT(i
/ 2));
877 POSTING_READ(DDI_BUF_CTL(PORT_E
));
881 /* Program PCH FDI Receiver TU */
882 I915_WRITE(FDI_RX_TUSIZE1(PIPE_A
), TU_SIZE(64));
884 /* Enable PCH FDI Receiver with auto-training */
885 rx_ctl_val
|= FDI_RX_ENABLE
| FDI_LINK_TRAIN_AUTO
;
886 I915_WRITE(FDI_RX_CTL(PIPE_A
), rx_ctl_val
);
887 POSTING_READ(FDI_RX_CTL(PIPE_A
));
889 /* Wait for FDI receiver lane calibration */
892 /* Unset FDI_RX_MISC pwrdn lanes */
893 temp
= I915_READ(FDI_RX_MISC(PIPE_A
));
894 temp
&= ~(FDI_RX_PWRDN_LANE1_MASK
| FDI_RX_PWRDN_LANE0_MASK
);
895 I915_WRITE(FDI_RX_MISC(PIPE_A
), temp
);
896 POSTING_READ(FDI_RX_MISC(PIPE_A
));
898 /* Wait for FDI auto training time */
901 temp
= I915_READ(DP_TP_STATUS(PORT_E
));
902 if (temp
& DP_TP_STATUS_AUTOTRAIN_DONE
) {
903 DRM_DEBUG_KMS("FDI link training done on step %d\n", i
);
908 * Leave things enabled even if we failed to train FDI.
909 * Results in less fireworks from the state checker.
911 if (i
== ARRAY_SIZE(hsw_ddi_translations_fdi
) * 2 - 1) {
912 DRM_ERROR("FDI link training failed!\n");
916 rx_ctl_val
&= ~FDI_RX_ENABLE
;
917 I915_WRITE(FDI_RX_CTL(PIPE_A
), rx_ctl_val
);
918 POSTING_READ(FDI_RX_CTL(PIPE_A
));
920 temp
= I915_READ(DDI_BUF_CTL(PORT_E
));
921 temp
&= ~DDI_BUF_CTL_ENABLE
;
922 I915_WRITE(DDI_BUF_CTL(PORT_E
), temp
);
923 POSTING_READ(DDI_BUF_CTL(PORT_E
));
925 /* Disable DP_TP_CTL and FDI_RX_CTL and retry */
926 temp
= I915_READ(DP_TP_CTL(PORT_E
));
927 temp
&= ~(DP_TP_CTL_ENABLE
| DP_TP_CTL_LINK_TRAIN_MASK
);
928 temp
|= DP_TP_CTL_LINK_TRAIN_PAT1
;
929 I915_WRITE(DP_TP_CTL(PORT_E
), temp
);
930 POSTING_READ(DP_TP_CTL(PORT_E
));
932 intel_wait_ddi_buf_idle(dev_priv
, PORT_E
);
934 /* Reset FDI_RX_MISC pwrdn lanes */
935 temp
= I915_READ(FDI_RX_MISC(PIPE_A
));
936 temp
&= ~(FDI_RX_PWRDN_LANE1_MASK
| FDI_RX_PWRDN_LANE0_MASK
);
937 temp
|= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
938 I915_WRITE(FDI_RX_MISC(PIPE_A
), temp
);
939 POSTING_READ(FDI_RX_MISC(PIPE_A
));
942 /* Enable normal pixel sending for FDI */
943 I915_WRITE(DP_TP_CTL(PORT_E
),
944 DP_TP_CTL_FDI_AUTOTRAIN
|
945 DP_TP_CTL_LINK_TRAIN_NORMAL
|
946 DP_TP_CTL_ENHANCED_FRAME_ENABLE
|
950 static void intel_ddi_init_dp_buf_reg(struct intel_encoder
*encoder
)
952 struct intel_dp
*intel_dp
= enc_to_intel_dp(&encoder
->base
);
953 struct intel_digital_port
*intel_dig_port
=
954 enc_to_dig_port(&encoder
->base
);
956 intel_dp
->DP
= intel_dig_port
->saved_port_bits
|
957 DDI_BUF_CTL_ENABLE
| DDI_BUF_TRANS_SELECT(0);
958 intel_dp
->DP
|= DDI_PORT_WIDTH(intel_dp
->lane_count
);
961 static struct intel_encoder
*
962 intel_ddi_get_crtc_encoder(struct intel_crtc
*crtc
)
964 struct drm_device
*dev
= crtc
->base
.dev
;
965 struct intel_encoder
*encoder
, *ret
= NULL
;
966 int num_encoders
= 0;
968 for_each_encoder_on_crtc(dev
, &crtc
->base
, encoder
) {
973 if (num_encoders
!= 1)
974 WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders
,
975 pipe_name(crtc
->pipe
));
981 /* Finds the only possible encoder associated with the given CRTC. */
982 struct intel_encoder
*
983 intel_ddi_get_crtc_new_encoder(struct intel_crtc_state
*crtc_state
)
985 struct intel_crtc
*crtc
= to_intel_crtc(crtc_state
->base
.crtc
);
986 struct intel_encoder
*ret
= NULL
;
987 struct drm_atomic_state
*state
;
988 struct drm_connector
*connector
;
989 struct drm_connector_state
*connector_state
;
990 int num_encoders
= 0;
993 state
= crtc_state
->base
.state
;
995 for_each_new_connector_in_state(state
, connector
, connector_state
, i
) {
996 if (connector_state
->crtc
!= crtc_state
->base
.crtc
)
999 ret
= to_intel_encoder(connector_state
->best_encoder
);
1003 WARN(num_encoders
!= 1, "%d encoders on crtc for pipe %c\n", num_encoders
,
1004 pipe_name(crtc
->pipe
));
1006 BUG_ON(ret
== NULL
);
1010 #define LC_FREQ 2700
1012 static int hsw_ddi_calc_wrpll_link(struct drm_i915_private
*dev_priv
,
1015 int refclk
= LC_FREQ
;
1019 wrpll
= I915_READ(reg
);
1020 switch (wrpll
& WRPLL_PLL_REF_MASK
) {
1022 case WRPLL_PLL_NON_SSC
:
1024 * We could calculate spread here, but our checking
1025 * code only cares about 5% accuracy, and spread is a max of
1030 case WRPLL_PLL_LCPLL
:
1034 WARN(1, "bad wrpll refclk\n");
1038 r
= wrpll
& WRPLL_DIVIDER_REF_MASK
;
1039 p
= (wrpll
& WRPLL_DIVIDER_POST_MASK
) >> WRPLL_DIVIDER_POST_SHIFT
;
1040 n
= (wrpll
& WRPLL_DIVIDER_FB_MASK
) >> WRPLL_DIVIDER_FB_SHIFT
;
1042 /* Convert to KHz, p & r have a fixed point portion */
1043 return (refclk
* n
* 100) / (p
* r
);
1046 static int skl_calc_wrpll_link(struct drm_i915_private
*dev_priv
,
1049 i915_reg_t cfgcr1_reg
, cfgcr2_reg
;
1050 uint32_t cfgcr1_val
, cfgcr2_val
;
1051 uint32_t p0
, p1
, p2
, dco_freq
;
1053 cfgcr1_reg
= DPLL_CFGCR1(dpll
);
1054 cfgcr2_reg
= DPLL_CFGCR2(dpll
);
1056 cfgcr1_val
= I915_READ(cfgcr1_reg
);
1057 cfgcr2_val
= I915_READ(cfgcr2_reg
);
1059 p0
= cfgcr2_val
& DPLL_CFGCR2_PDIV_MASK
;
1060 p2
= cfgcr2_val
& DPLL_CFGCR2_KDIV_MASK
;
1062 if (cfgcr2_val
& DPLL_CFGCR2_QDIV_MODE(1))
1063 p1
= (cfgcr2_val
& DPLL_CFGCR2_QDIV_RATIO_MASK
) >> 8;
1069 case DPLL_CFGCR2_PDIV_1
:
1072 case DPLL_CFGCR2_PDIV_2
:
1075 case DPLL_CFGCR2_PDIV_3
:
1078 case DPLL_CFGCR2_PDIV_7
:
1084 case DPLL_CFGCR2_KDIV_5
:
1087 case DPLL_CFGCR2_KDIV_2
:
1090 case DPLL_CFGCR2_KDIV_3
:
1093 case DPLL_CFGCR2_KDIV_1
:
1098 dco_freq
= (cfgcr1_val
& DPLL_CFGCR1_DCO_INTEGER_MASK
) * 24 * 1000;
1100 dco_freq
+= (((cfgcr1_val
& DPLL_CFGCR1_DCO_FRACTION_MASK
) >> 9) * 24 *
1103 return dco_freq
/ (p0
* p1
* p2
* 5);
1106 static void ddi_dotclock_get(struct intel_crtc_state
*pipe_config
)
1110 if (pipe_config
->has_pch_encoder
)
1111 dotclock
= intel_dotclock_calculate(pipe_config
->port_clock
,
1112 &pipe_config
->fdi_m_n
);
1113 else if (intel_crtc_has_dp_encoder(pipe_config
))
1114 dotclock
= intel_dotclock_calculate(pipe_config
->port_clock
,
1115 &pipe_config
->dp_m_n
);
1116 else if (pipe_config
->has_hdmi_sink
&& pipe_config
->pipe_bpp
== 36)
1117 dotclock
= pipe_config
->port_clock
* 2 / 3;
1119 dotclock
= pipe_config
->port_clock
;
1121 if (pipe_config
->pixel_multiplier
)
1122 dotclock
/= pipe_config
->pixel_multiplier
;
1124 pipe_config
->base
.adjusted_mode
.crtc_clock
= dotclock
;
1127 static void skl_ddi_clock_get(struct intel_encoder
*encoder
,
1128 struct intel_crtc_state
*pipe_config
)
1130 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
1132 uint32_t dpll_ctl1
, dpll
;
1134 dpll
= intel_get_shared_dpll_id(dev_priv
, pipe_config
->shared_dpll
);
1136 dpll_ctl1
= I915_READ(DPLL_CTRL1
);
1138 if (dpll_ctl1
& DPLL_CTRL1_HDMI_MODE(dpll
)) {
1139 link_clock
= skl_calc_wrpll_link(dev_priv
, dpll
);
1141 link_clock
= dpll_ctl1
& DPLL_CTRL1_LINK_RATE_MASK(dpll
);
1142 link_clock
>>= DPLL_CTRL1_LINK_RATE_SHIFT(dpll
);
1144 switch (link_clock
) {
1145 case DPLL_CTRL1_LINK_RATE_810
:
1148 case DPLL_CTRL1_LINK_RATE_1080
:
1149 link_clock
= 108000;
1151 case DPLL_CTRL1_LINK_RATE_1350
:
1152 link_clock
= 135000;
1154 case DPLL_CTRL1_LINK_RATE_1620
:
1155 link_clock
= 162000;
1157 case DPLL_CTRL1_LINK_RATE_2160
:
1158 link_clock
= 216000;
1160 case DPLL_CTRL1_LINK_RATE_2700
:
1161 link_clock
= 270000;
1164 WARN(1, "Unsupported link rate\n");
1170 pipe_config
->port_clock
= link_clock
;
1172 ddi_dotclock_get(pipe_config
);
1175 static void hsw_ddi_clock_get(struct intel_encoder
*encoder
,
1176 struct intel_crtc_state
*pipe_config
)
1178 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
1182 val
= hsw_pll_to_ddi_pll_sel(pipe_config
->shared_dpll
);
1183 switch (val
& PORT_CLK_SEL_MASK
) {
1184 case PORT_CLK_SEL_LCPLL_810
:
1187 case PORT_CLK_SEL_LCPLL_1350
:
1188 link_clock
= 135000;
1190 case PORT_CLK_SEL_LCPLL_2700
:
1191 link_clock
= 270000;
1193 case PORT_CLK_SEL_WRPLL1
:
1194 link_clock
= hsw_ddi_calc_wrpll_link(dev_priv
, WRPLL_CTL(0));
1196 case PORT_CLK_SEL_WRPLL2
:
1197 link_clock
= hsw_ddi_calc_wrpll_link(dev_priv
, WRPLL_CTL(1));
1199 case PORT_CLK_SEL_SPLL
:
1200 pll
= I915_READ(SPLL_CTL
) & SPLL_PLL_FREQ_MASK
;
1201 if (pll
== SPLL_PLL_FREQ_810MHz
)
1203 else if (pll
== SPLL_PLL_FREQ_1350MHz
)
1204 link_clock
= 135000;
1205 else if (pll
== SPLL_PLL_FREQ_2700MHz
)
1206 link_clock
= 270000;
1208 WARN(1, "bad spll freq\n");
1213 WARN(1, "bad port clock sel\n");
1217 pipe_config
->port_clock
= link_clock
* 2;
1219 ddi_dotclock_get(pipe_config
);
1222 static int bxt_calc_pll_link(struct drm_i915_private
*dev_priv
,
1223 enum intel_dpll_id dpll
)
1225 struct intel_shared_dpll
*pll
;
1226 struct intel_dpll_hw_state
*state
;
1229 /* For DDI ports we always use a shared PLL. */
1230 if (WARN_ON(dpll
== DPLL_ID_PRIVATE
))
1233 pll
= &dev_priv
->shared_dplls
[dpll
];
1234 state
= &pll
->state
.hw_state
;
1237 clock
.m2
= (state
->pll0
& PORT_PLL_M2_MASK
) << 22;
1238 if (state
->pll3
& PORT_PLL_M2_FRAC_ENABLE
)
1239 clock
.m2
|= state
->pll2
& PORT_PLL_M2_FRAC_MASK
;
1240 clock
.n
= (state
->pll1
& PORT_PLL_N_MASK
) >> PORT_PLL_N_SHIFT
;
1241 clock
.p1
= (state
->ebb0
& PORT_PLL_P1_MASK
) >> PORT_PLL_P1_SHIFT
;
1242 clock
.p2
= (state
->ebb0
& PORT_PLL_P2_MASK
) >> PORT_PLL_P2_SHIFT
;
1244 return chv_calc_dpll_params(100000, &clock
);
1247 static void bxt_ddi_clock_get(struct intel_encoder
*encoder
,
1248 struct intel_crtc_state
*pipe_config
)
1250 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
1251 enum port port
= intel_ddi_get_encoder_port(encoder
);
1252 uint32_t dpll
= port
;
1254 pipe_config
->port_clock
= bxt_calc_pll_link(dev_priv
, dpll
);
1256 ddi_dotclock_get(pipe_config
);
1259 void intel_ddi_clock_get(struct intel_encoder
*encoder
,
1260 struct intel_crtc_state
*pipe_config
)
1262 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
1264 if (INTEL_GEN(dev_priv
) <= 8)
1265 hsw_ddi_clock_get(encoder
, pipe_config
);
1266 else if (IS_GEN9_BC(dev_priv
))
1267 skl_ddi_clock_get(encoder
, pipe_config
);
1268 else if (IS_GEN9_LP(dev_priv
))
1269 bxt_ddi_clock_get(encoder
, pipe_config
);
1272 void intel_ddi_set_pipe_settings(const struct intel_crtc_state
*crtc_state
)
1274 struct intel_crtc
*crtc
= to_intel_crtc(crtc_state
->base
.crtc
);
1275 struct drm_i915_private
*dev_priv
= to_i915(crtc
->base
.dev
);
1276 struct intel_encoder
*encoder
= intel_ddi_get_crtc_encoder(crtc
);
1277 enum transcoder cpu_transcoder
= crtc_state
->cpu_transcoder
;
1278 int type
= encoder
->type
;
1281 if (type
== INTEL_OUTPUT_DP
|| type
== INTEL_OUTPUT_EDP
|| type
== INTEL_OUTPUT_DP_MST
) {
1282 WARN_ON(transcoder_is_dsi(cpu_transcoder
));
1284 temp
= TRANS_MSA_SYNC_CLK
;
1285 switch (crtc_state
->pipe_bpp
) {
1287 temp
|= TRANS_MSA_6_BPC
;
1290 temp
|= TRANS_MSA_8_BPC
;
1293 temp
|= TRANS_MSA_10_BPC
;
1296 temp
|= TRANS_MSA_12_BPC
;
1301 I915_WRITE(TRANS_MSA_MISC(cpu_transcoder
), temp
);
1305 void intel_ddi_set_vc_payload_alloc(const struct intel_crtc_state
*crtc_state
,
1308 struct intel_crtc
*crtc
= to_intel_crtc(crtc_state
->base
.crtc
);
1309 struct drm_i915_private
*dev_priv
= to_i915(crtc
->base
.dev
);
1310 enum transcoder cpu_transcoder
= crtc_state
->cpu_transcoder
;
1312 temp
= I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder
));
1314 temp
|= TRANS_DDI_DP_VC_PAYLOAD_ALLOC
;
1316 temp
&= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC
;
1317 I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder
), temp
);
1320 void intel_ddi_enable_transcoder_func(const struct intel_crtc_state
*crtc_state
)
1322 struct intel_crtc
*crtc
= to_intel_crtc(crtc_state
->base
.crtc
);
1323 struct intel_encoder
*encoder
= intel_ddi_get_crtc_encoder(crtc
);
1324 struct drm_i915_private
*dev_priv
= to_i915(crtc
->base
.dev
);
1325 enum pipe pipe
= crtc
->pipe
;
1326 enum transcoder cpu_transcoder
= crtc_state
->cpu_transcoder
;
1327 enum port port
= intel_ddi_get_encoder_port(encoder
);
1328 int type
= encoder
->type
;
1331 /* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */
1332 temp
= TRANS_DDI_FUNC_ENABLE
;
1333 temp
|= TRANS_DDI_SELECT_PORT(port
);
1335 switch (crtc_state
->pipe_bpp
) {
1337 temp
|= TRANS_DDI_BPC_6
;
1340 temp
|= TRANS_DDI_BPC_8
;
1343 temp
|= TRANS_DDI_BPC_10
;
1346 temp
|= TRANS_DDI_BPC_12
;
1352 if (crtc_state
->base
.adjusted_mode
.flags
& DRM_MODE_FLAG_PVSYNC
)
1353 temp
|= TRANS_DDI_PVSYNC
;
1354 if (crtc_state
->base
.adjusted_mode
.flags
& DRM_MODE_FLAG_PHSYNC
)
1355 temp
|= TRANS_DDI_PHSYNC
;
1357 if (cpu_transcoder
== TRANSCODER_EDP
) {
1360 /* On Haswell, can only use the always-on power well for
1361 * eDP when not using the panel fitter, and when not
1362 * using motion blur mitigation (which we don't
1364 if (IS_HASWELL(dev_priv
) &&
1365 (crtc_state
->pch_pfit
.enabled
||
1366 crtc_state
->pch_pfit
.force_thru
))
1367 temp
|= TRANS_DDI_EDP_INPUT_A_ONOFF
;
1369 temp
|= TRANS_DDI_EDP_INPUT_A_ON
;
1372 temp
|= TRANS_DDI_EDP_INPUT_B_ONOFF
;
1375 temp
|= TRANS_DDI_EDP_INPUT_C_ONOFF
;
1383 if (type
== INTEL_OUTPUT_HDMI
) {
1384 if (crtc_state
->has_hdmi_sink
)
1385 temp
|= TRANS_DDI_MODE_SELECT_HDMI
;
1387 temp
|= TRANS_DDI_MODE_SELECT_DVI
;
1389 if (crtc_state
->hdmi_scrambling
)
1390 temp
|= TRANS_DDI_HDMI_SCRAMBLING_MASK
;
1391 if (crtc_state
->hdmi_high_tmds_clock_ratio
)
1392 temp
|= TRANS_DDI_HIGH_TMDS_CHAR_RATE
;
1393 } else if (type
== INTEL_OUTPUT_ANALOG
) {
1394 temp
|= TRANS_DDI_MODE_SELECT_FDI
;
1395 temp
|= (crtc_state
->fdi_lanes
- 1) << 1;
1396 } else if (type
== INTEL_OUTPUT_DP
||
1397 type
== INTEL_OUTPUT_EDP
) {
1398 temp
|= TRANS_DDI_MODE_SELECT_DP_SST
;
1399 temp
|= DDI_PORT_WIDTH(crtc_state
->lane_count
);
1400 } else if (type
== INTEL_OUTPUT_DP_MST
) {
1401 temp
|= TRANS_DDI_MODE_SELECT_DP_MST
;
1402 temp
|= DDI_PORT_WIDTH(crtc_state
->lane_count
);
1404 WARN(1, "Invalid encoder type %d for pipe %c\n",
1405 encoder
->type
, pipe_name(pipe
));
1408 I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder
), temp
);
1411 void intel_ddi_disable_transcoder_func(struct drm_i915_private
*dev_priv
,
1412 enum transcoder cpu_transcoder
)
1414 i915_reg_t reg
= TRANS_DDI_FUNC_CTL(cpu_transcoder
);
1415 uint32_t val
= I915_READ(reg
);
1417 val
&= ~(TRANS_DDI_FUNC_ENABLE
| TRANS_DDI_PORT_MASK
| TRANS_DDI_DP_VC_PAYLOAD_ALLOC
);
1418 val
|= TRANS_DDI_PORT_NONE
;
1419 I915_WRITE(reg
, val
);
1422 bool intel_ddi_connector_get_hw_state(struct intel_connector
*intel_connector
)
1424 struct drm_device
*dev
= intel_connector
->base
.dev
;
1425 struct drm_i915_private
*dev_priv
= to_i915(dev
);
1426 struct intel_encoder
*encoder
= intel_connector
->encoder
;
1427 int type
= intel_connector
->base
.connector_type
;
1428 enum port port
= intel_ddi_get_encoder_port(encoder
);
1430 enum transcoder cpu_transcoder
;
1434 if (!intel_display_power_get_if_enabled(dev_priv
,
1435 encoder
->power_domain
))
1438 if (!encoder
->get_hw_state(encoder
, &pipe
)) {
1444 cpu_transcoder
= TRANSCODER_EDP
;
1446 cpu_transcoder
= (enum transcoder
) pipe
;
1448 tmp
= I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder
));
1450 switch (tmp
& TRANS_DDI_MODE_SELECT_MASK
) {
1451 case TRANS_DDI_MODE_SELECT_HDMI
:
1452 case TRANS_DDI_MODE_SELECT_DVI
:
1453 ret
= type
== DRM_MODE_CONNECTOR_HDMIA
;
1456 case TRANS_DDI_MODE_SELECT_DP_SST
:
1457 ret
= type
== DRM_MODE_CONNECTOR_eDP
||
1458 type
== DRM_MODE_CONNECTOR_DisplayPort
;
1461 case TRANS_DDI_MODE_SELECT_DP_MST
:
1462 /* if the transcoder is in MST state then
1463 * connector isn't connected */
1467 case TRANS_DDI_MODE_SELECT_FDI
:
1468 ret
= type
== DRM_MODE_CONNECTOR_VGA
;
1477 intel_display_power_put(dev_priv
, encoder
->power_domain
);
1482 bool intel_ddi_get_hw_state(struct intel_encoder
*encoder
,
1485 struct drm_device
*dev
= encoder
->base
.dev
;
1486 struct drm_i915_private
*dev_priv
= to_i915(dev
);
1487 enum port port
= intel_ddi_get_encoder_port(encoder
);
1492 if (!intel_display_power_get_if_enabled(dev_priv
,
1493 encoder
->power_domain
))
1498 tmp
= I915_READ(DDI_BUF_CTL(port
));
1500 if (!(tmp
& DDI_BUF_CTL_ENABLE
))
1503 if (port
== PORT_A
) {
1504 tmp
= I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP
));
1506 switch (tmp
& TRANS_DDI_EDP_INPUT_MASK
) {
1507 case TRANS_DDI_EDP_INPUT_A_ON
:
1508 case TRANS_DDI_EDP_INPUT_A_ONOFF
:
1511 case TRANS_DDI_EDP_INPUT_B_ONOFF
:
1514 case TRANS_DDI_EDP_INPUT_C_ONOFF
:
1524 for (i
= TRANSCODER_A
; i
<= TRANSCODER_C
; i
++) {
1525 tmp
= I915_READ(TRANS_DDI_FUNC_CTL(i
));
1527 if ((tmp
& TRANS_DDI_PORT_MASK
) == TRANS_DDI_SELECT_PORT(port
)) {
1528 if ((tmp
& TRANS_DDI_MODE_SELECT_MASK
) ==
1529 TRANS_DDI_MODE_SELECT_DP_MST
)
1539 DRM_DEBUG_KMS("No pipe for ddi port %c found\n", port_name(port
));
1542 if (ret
&& IS_GEN9_LP(dev_priv
)) {
1543 tmp
= I915_READ(BXT_PHY_CTL(port
));
1544 if ((tmp
& (BXT_PHY_LANE_POWERDOWN_ACK
|
1545 BXT_PHY_LANE_ENABLED
)) != BXT_PHY_LANE_ENABLED
)
1546 DRM_ERROR("Port %c enabled but PHY powered down? "
1547 "(PHY_CTL %08x)\n", port_name(port
), tmp
);
1550 intel_display_power_put(dev_priv
, encoder
->power_domain
);
1555 static u64
intel_ddi_get_power_domains(struct intel_encoder
*encoder
)
1557 struct intel_digital_port
*dig_port
= enc_to_dig_port(&encoder
->base
);
1560 if (intel_ddi_get_hw_state(encoder
, &pipe
))
1561 return BIT_ULL(dig_port
->ddi_io_power_domain
);
1566 void intel_ddi_enable_pipe_clock(const struct intel_crtc_state
*crtc_state
)
1568 struct intel_crtc
*crtc
= to_intel_crtc(crtc_state
->base
.crtc
);
1569 struct drm_i915_private
*dev_priv
= to_i915(crtc
->base
.dev
);
1570 struct intel_encoder
*encoder
= intel_ddi_get_crtc_encoder(crtc
);
1571 enum port port
= intel_ddi_get_encoder_port(encoder
);
1572 enum transcoder cpu_transcoder
= crtc_state
->cpu_transcoder
;
1574 if (cpu_transcoder
!= TRANSCODER_EDP
)
1575 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder
),
1576 TRANS_CLK_SEL_PORT(port
));
1579 void intel_ddi_disable_pipe_clock(const struct intel_crtc_state
*crtc_state
)
1581 struct drm_i915_private
*dev_priv
= to_i915(crtc_state
->base
.crtc
->dev
);
1582 enum transcoder cpu_transcoder
= crtc_state
->cpu_transcoder
;
1584 if (cpu_transcoder
!= TRANSCODER_EDP
)
1585 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder
),
1586 TRANS_CLK_SEL_DISABLED
);
1589 static void _skl_ddi_set_iboost(struct drm_i915_private
*dev_priv
,
1590 enum port port
, uint8_t iboost
)
1594 tmp
= I915_READ(DISPIO_CR_TX_BMU_CR0
);
1595 tmp
&= ~(BALANCE_LEG_MASK(port
) | BALANCE_LEG_DISABLE(port
));
1597 tmp
|= iboost
<< BALANCE_LEG_SHIFT(port
);
1599 tmp
|= BALANCE_LEG_DISABLE(port
);
1600 I915_WRITE(DISPIO_CR_TX_BMU_CR0
, tmp
);
1603 static void skl_ddi_set_iboost(struct intel_encoder
*encoder
, u32 level
)
1605 struct intel_digital_port
*intel_dig_port
= enc_to_dig_port(&encoder
->base
);
1606 struct drm_i915_private
*dev_priv
= to_i915(intel_dig_port
->base
.base
.dev
);
1607 enum port port
= intel_dig_port
->port
;
1608 int type
= encoder
->type
;
1609 const struct ddi_buf_trans
*ddi_translations
;
1611 uint8_t dp_iboost
, hdmi_iboost
;
1614 /* VBT may override standard boost values */
1615 dp_iboost
= dev_priv
->vbt
.ddi_port_info
[port
].dp_boost_level
;
1616 hdmi_iboost
= dev_priv
->vbt
.ddi_port_info
[port
].hdmi_boost_level
;
1618 if (type
== INTEL_OUTPUT_DP
) {
1622 if (IS_KABYLAKE(dev_priv
) || IS_COFFEELAKE(dev_priv
))
1623 ddi_translations
= kbl_get_buf_trans_dp(dev_priv
,
1626 ddi_translations
= skl_get_buf_trans_dp(dev_priv
,
1628 iboost
= ddi_translations
[level
].i_boost
;
1630 } else if (type
== INTEL_OUTPUT_EDP
) {
1634 ddi_translations
= skl_get_buf_trans_edp(dev_priv
, &n_entries
);
1636 if (WARN_ON(port
!= PORT_A
&&
1637 port
!= PORT_E
&& n_entries
> 9))
1640 iboost
= ddi_translations
[level
].i_boost
;
1642 } else if (type
== INTEL_OUTPUT_HDMI
) {
1644 iboost
= hdmi_iboost
;
1646 ddi_translations
= skl_get_buf_trans_hdmi(dev_priv
, &n_entries
);
1647 iboost
= ddi_translations
[level
].i_boost
;
1653 /* Make sure that the requested I_boost is valid */
1654 if (iboost
&& iboost
!= 0x1 && iboost
!= 0x3 && iboost
!= 0x7) {
1655 DRM_ERROR("Invalid I_boost value %u\n", iboost
);
1659 _skl_ddi_set_iboost(dev_priv
, port
, iboost
);
1661 if (port
== PORT_A
&& intel_dig_port
->max_lanes
== 4)
1662 _skl_ddi_set_iboost(dev_priv
, PORT_E
, iboost
);
1665 static void bxt_ddi_vswing_sequence(struct drm_i915_private
*dev_priv
,
1666 u32 level
, enum port port
, int type
)
1668 const struct bxt_ddi_buf_trans
*ddi_translations
;
1671 if (type
== INTEL_OUTPUT_EDP
&& dev_priv
->vbt
.edp
.low_vswing
) {
1672 n_entries
= ARRAY_SIZE(bxt_ddi_translations_edp
);
1673 ddi_translations
= bxt_ddi_translations_edp
;
1674 } else if (type
== INTEL_OUTPUT_DP
1675 || type
== INTEL_OUTPUT_EDP
) {
1676 n_entries
= ARRAY_SIZE(bxt_ddi_translations_dp
);
1677 ddi_translations
= bxt_ddi_translations_dp
;
1678 } else if (type
== INTEL_OUTPUT_HDMI
) {
1679 n_entries
= ARRAY_SIZE(bxt_ddi_translations_hdmi
);
1680 ddi_translations
= bxt_ddi_translations_hdmi
;
1682 DRM_DEBUG_KMS("Vswing programming not done for encoder %d\n",
1687 /* Check if default value has to be used */
1688 if (level
>= n_entries
||
1689 (type
== INTEL_OUTPUT_HDMI
&& level
== HDMI_LEVEL_SHIFT_UNKNOWN
)) {
1690 for (i
= 0; i
< n_entries
; i
++) {
1691 if (ddi_translations
[i
].default_index
) {
1698 bxt_ddi_phy_set_signal_level(dev_priv
, port
,
1699 ddi_translations
[level
].margin
,
1700 ddi_translations
[level
].scale
,
1701 ddi_translations
[level
].enable
,
1702 ddi_translations
[level
].deemphasis
);
1705 u8
intel_ddi_dp_voltage_max(struct intel_encoder
*encoder
)
1707 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
1710 if (encoder
->type
== INTEL_OUTPUT_EDP
)
1711 intel_ddi_get_buf_trans_edp(dev_priv
, &n_entries
);
1713 intel_ddi_get_buf_trans_dp(dev_priv
, &n_entries
);
1715 if (WARN_ON(n_entries
< 1))
1717 if (WARN_ON(n_entries
> ARRAY_SIZE(index_to_dp_signal_levels
)))
1718 n_entries
= ARRAY_SIZE(index_to_dp_signal_levels
);
1720 return index_to_dp_signal_levels
[n_entries
- 1] &
1721 DP_TRAIN_VOLTAGE_SWING_MASK
;
1724 static const struct cnl_ddi_buf_trans
*
1725 cnl_get_buf_trans_hdmi(struct drm_i915_private
*dev_priv
,
1726 u32 voltage
, int *n_entries
)
1728 if (voltage
== VOLTAGE_INFO_0_85V
) {
1729 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_hdmi_0_85V
);
1730 return cnl_ddi_translations_hdmi_0_85V
;
1731 } else if (voltage
== VOLTAGE_INFO_0_95V
) {
1732 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_hdmi_0_95V
);
1733 return cnl_ddi_translations_hdmi_0_95V
;
1734 } else if (voltage
== VOLTAGE_INFO_1_05V
) {
1735 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_hdmi_1_05V
);
1736 return cnl_ddi_translations_hdmi_1_05V
;
1741 static const struct cnl_ddi_buf_trans
*
1742 cnl_get_buf_trans_dp(struct drm_i915_private
*dev_priv
,
1743 u32 voltage
, int *n_entries
)
1745 if (voltage
== VOLTAGE_INFO_0_85V
) {
1746 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_dp_0_85V
);
1747 return cnl_ddi_translations_dp_0_85V
;
1748 } else if (voltage
== VOLTAGE_INFO_0_95V
) {
1749 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_dp_0_95V
);
1750 return cnl_ddi_translations_dp_0_95V
;
1751 } else if (voltage
== VOLTAGE_INFO_1_05V
) {
1752 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_dp_1_05V
);
1753 return cnl_ddi_translations_dp_1_05V
;
1758 static const struct cnl_ddi_buf_trans
*
1759 cnl_get_buf_trans_edp(struct drm_i915_private
*dev_priv
,
1760 u32 voltage
, int *n_entries
)
1762 if (dev_priv
->vbt
.edp
.low_vswing
) {
1763 if (voltage
== VOLTAGE_INFO_0_85V
) {
1764 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_edp_0_85V
);
1765 return cnl_ddi_translations_dp_0_85V
;
1766 } else if (voltage
== VOLTAGE_INFO_0_95V
) {
1767 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_edp_0_95V
);
1768 return cnl_ddi_translations_edp_0_95V
;
1769 } else if (voltage
== VOLTAGE_INFO_1_05V
) {
1770 *n_entries
= ARRAY_SIZE(cnl_ddi_translations_edp_1_05V
);
1771 return cnl_ddi_translations_edp_1_05V
;
1775 return cnl_get_buf_trans_dp(dev_priv
, voltage
, n_entries
);
1779 static void cnl_ddi_vswing_program(struct drm_i915_private
*dev_priv
,
1780 u32 level
, enum port port
, int type
)
1782 const struct cnl_ddi_buf_trans
*ddi_translations
= NULL
;
1783 u32 n_entries
, val
, voltage
;
1787 * Values for each port type are listed in
1788 * voltage swing programming tables.
1789 * Vccio voltage found in PORT_COMP_DW3.
1791 voltage
= I915_READ(CNL_PORT_COMP_DW3
) & VOLTAGE_INFO_MASK
;
1793 if (type
== INTEL_OUTPUT_HDMI
) {
1794 ddi_translations
= cnl_get_buf_trans_hdmi(dev_priv
,
1795 voltage
, &n_entries
);
1796 } else if (type
== INTEL_OUTPUT_DP
) {
1797 ddi_translations
= cnl_get_buf_trans_dp(dev_priv
,
1798 voltage
, &n_entries
);
1799 } else if (type
== INTEL_OUTPUT_EDP
) {
1800 ddi_translations
= cnl_get_buf_trans_edp(dev_priv
,
1801 voltage
, &n_entries
);
1804 if (ddi_translations
== NULL
) {
1805 MISSING_CASE(voltage
);
1809 if (level
>= n_entries
) {
1810 DRM_DEBUG_KMS("DDI translation not found for level %d. Using %d instead.", level
, n_entries
- 1);
1811 level
= n_entries
- 1;
1814 /* Set PORT_TX_DW5 Scaling Mode Sel to 010b. */
1815 val
= I915_READ(CNL_PORT_TX_DW5_LN0(port
));
1816 val
&= ~SCALING_MODE_SEL_MASK
;
1817 val
|= SCALING_MODE_SEL(2);
1818 I915_WRITE(CNL_PORT_TX_DW5_GRP(port
), val
);
1820 /* Program PORT_TX_DW2 */
1821 val
= I915_READ(CNL_PORT_TX_DW2_LN0(port
));
1822 val
&= ~(SWING_SEL_LOWER_MASK
| SWING_SEL_UPPER_MASK
|
1824 val
|= SWING_SEL_UPPER(ddi_translations
[level
].dw2_swing_sel
);
1825 val
|= SWING_SEL_LOWER(ddi_translations
[level
].dw2_swing_sel
);
1826 /* Rcomp scalar is fixed as 0x98 for every table entry */
1827 val
|= RCOMP_SCALAR(0x98);
1828 I915_WRITE(CNL_PORT_TX_DW2_GRP(port
), val
);
1830 /* Program PORT_TX_DW4 */
1831 /* We cannot write to GRP. It would overrite individual loadgen */
1832 for (ln
= 0; ln
< 4; ln
++) {
1833 val
= I915_READ(CNL_PORT_TX_DW4_LN(port
, ln
));
1834 val
&= ~(POST_CURSOR_1_MASK
| POST_CURSOR_2_MASK
|
1836 val
|= POST_CURSOR_1(ddi_translations
[level
].dw4_post_cursor_1
);
1837 val
|= POST_CURSOR_2(ddi_translations
[level
].dw4_post_cursor_2
);
1838 val
|= CURSOR_COEFF(ddi_translations
[level
].dw4_cursor_coeff
);
1839 I915_WRITE(CNL_PORT_TX_DW4_LN(port
, ln
), val
);
1842 /* Program PORT_TX_DW5 */
1843 /* All DW5 values are fixed for every table entry */
1844 val
= I915_READ(CNL_PORT_TX_DW5_LN0(port
));
1845 val
&= ~RTERM_SELECT_MASK
;
1846 val
|= RTERM_SELECT(6);
1847 val
|= TAP3_DISABLE
;
1848 I915_WRITE(CNL_PORT_TX_DW5_GRP(port
), val
);
1850 /* Program PORT_TX_DW7 */
1851 val
= I915_READ(CNL_PORT_TX_DW7_LN0(port
));
1852 val
&= ~N_SCALAR_MASK
;
1853 val
|= N_SCALAR(ddi_translations
[level
].dw7_n_scalar
);
1854 I915_WRITE(CNL_PORT_TX_DW7_GRP(port
), val
);
1857 static void cnl_ddi_vswing_sequence(struct intel_encoder
*encoder
, u32 level
)
1859 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
1860 struct intel_dp
*intel_dp
= enc_to_intel_dp(&encoder
->base
);
1861 enum port port
= intel_ddi_get_encoder_port(encoder
);
1862 int type
= encoder
->type
;
1868 if ((intel_dp
) && (type
== INTEL_OUTPUT_EDP
|| type
== INTEL_OUTPUT_DP
)) {
1869 width
= intel_dp
->lane_count
;
1870 rate
= intel_dp
->link_rate
;
1873 /* Rate is always < than 6GHz for HDMI */
1877 * 1. If port type is eDP or DP,
1878 * set PORT_PCS_DW1 cmnkeeper_enable to 1b,
1881 val
= I915_READ(CNL_PORT_PCS_DW1_LN0(port
));
1882 if (type
== INTEL_OUTPUT_EDP
|| type
== INTEL_OUTPUT_DP
)
1883 val
|= COMMON_KEEPER_EN
;
1885 val
&= ~COMMON_KEEPER_EN
;
1886 I915_WRITE(CNL_PORT_PCS_DW1_GRP(port
), val
);
1888 /* 2. Program loadgen select */
1890 * Program PORT_TX_DW4_LN depending on Bit rate and used lanes
1891 * <= 6 GHz and 4 lanes (LN0=0, LN1=1, LN2=1, LN3=1)
1892 * <= 6 GHz and 1,2 lanes (LN0=0, LN1=1, LN2=1, LN3=0)
1893 * > 6 GHz (LN0=0, LN1=0, LN2=0, LN3=0)
1895 for (ln
= 0; ln
<= 3; ln
++) {
1896 val
= I915_READ(CNL_PORT_TX_DW4_LN(port
, ln
));
1897 val
&= ~LOADGEN_SELECT
;
1899 if (((rate
< 600000) && (width
== 4) && (ln
>= 1)) ||
1900 ((rate
< 600000) && (width
< 4) && ((ln
== 1) || (ln
== 2)))) {
1901 val
|= LOADGEN_SELECT
;
1903 I915_WRITE(CNL_PORT_TX_DW4_LN(port
, ln
), val
);
1906 /* 3. Set PORT_CL_DW5 SUS Clock Config to 11b */
1907 val
= I915_READ(CNL_PORT_CL1CM_DW5
);
1908 val
|= SUS_CLOCK_CONFIG
;
1909 I915_WRITE(CNL_PORT_CL1CM_DW5
, val
);
1911 /* 4. Clear training enable to change swing values */
1912 val
= I915_READ(CNL_PORT_TX_DW5_LN0(port
));
1913 val
&= ~TX_TRAINING_EN
;
1914 I915_WRITE(CNL_PORT_TX_DW5_GRP(port
), val
);
1916 /* 5. Program swing and de-emphasis */
1917 cnl_ddi_vswing_program(dev_priv
, level
, port
, type
);
1919 /* 6. Set training enable to trigger update */
1920 val
= I915_READ(CNL_PORT_TX_DW5_LN0(port
));
1921 val
|= TX_TRAINING_EN
;
1922 I915_WRITE(CNL_PORT_TX_DW5_GRP(port
), val
);
1925 static uint32_t translate_signal_level(int signal_levels
)
1929 for (i
= 0; i
< ARRAY_SIZE(index_to_dp_signal_levels
); i
++) {
1930 if (index_to_dp_signal_levels
[i
] == signal_levels
)
1934 WARN(1, "Unsupported voltage swing/pre-emphasis level: 0x%x\n",
1940 uint32_t ddi_signal_levels(struct intel_dp
*intel_dp
)
1942 struct intel_digital_port
*dport
= dp_to_dig_port(intel_dp
);
1943 struct drm_i915_private
*dev_priv
= to_i915(dport
->base
.base
.dev
);
1944 struct intel_encoder
*encoder
= &dport
->base
;
1945 uint8_t train_set
= intel_dp
->train_set
[0];
1946 int signal_levels
= train_set
& (DP_TRAIN_VOLTAGE_SWING_MASK
|
1947 DP_TRAIN_PRE_EMPHASIS_MASK
);
1948 enum port port
= dport
->port
;
1951 level
= translate_signal_level(signal_levels
);
1953 if (IS_GEN9_BC(dev_priv
))
1954 skl_ddi_set_iboost(encoder
, level
);
1955 else if (IS_GEN9_LP(dev_priv
))
1956 bxt_ddi_vswing_sequence(dev_priv
, level
, port
, encoder
->type
);
1957 else if (IS_CANNONLAKE(dev_priv
)) {
1958 cnl_ddi_vswing_sequence(encoder
, level
);
1959 /* DDI_BUF_CTL bits 27:24 are reserved on CNL */
1962 return DDI_BUF_TRANS_SELECT(level
);
1965 static void intel_ddi_clk_select(struct intel_encoder
*encoder
,
1966 struct intel_shared_dpll
*pll
)
1968 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
1969 enum port port
= intel_ddi_get_encoder_port(encoder
);
1975 if (IS_CANNONLAKE(dev_priv
)) {
1976 /* Configure DPCLKA_CFGCR0 to map the DPLL to the DDI. */
1977 val
= I915_READ(DPCLKA_CFGCR0
);
1978 val
|= DPCLKA_CFGCR0_DDI_CLK_SEL(pll
->id
, port
);
1979 I915_WRITE(DPCLKA_CFGCR0
, val
);
1982 * Configure DPCLKA_CFGCR0 to turn on the clock for the DDI.
1983 * This step and the step before must be done with separate
1986 val
= I915_READ(DPCLKA_CFGCR0
);
1987 val
&= ~(DPCLKA_CFGCR0_DDI_CLK_OFF(port
) |
1988 DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port
));
1989 I915_WRITE(DPCLKA_CFGCR0
, val
);
1990 } else if (IS_GEN9_BC(dev_priv
)) {
1991 /* DDI -> PLL mapping */
1992 val
= I915_READ(DPLL_CTRL2
);
1994 val
&= ~(DPLL_CTRL2_DDI_CLK_OFF(port
) |
1995 DPLL_CTRL2_DDI_CLK_SEL_MASK(port
));
1996 val
|= (DPLL_CTRL2_DDI_CLK_SEL(pll
->id
, port
) |
1997 DPLL_CTRL2_DDI_SEL_OVERRIDE(port
));
1999 I915_WRITE(DPLL_CTRL2
, val
);
2001 } else if (INTEL_INFO(dev_priv
)->gen
< 9) {
2002 I915_WRITE(PORT_CLK_SEL(port
), hsw_pll_to_ddi_pll_sel(pll
));
2006 static void intel_ddi_pre_enable_dp(struct intel_encoder
*encoder
,
2007 int link_rate
, uint32_t lane_count
,
2008 struct intel_shared_dpll
*pll
,
2011 struct intel_dp
*intel_dp
= enc_to_intel_dp(&encoder
->base
);
2012 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
2013 enum port port
= intel_ddi_get_encoder_port(encoder
);
2014 struct intel_digital_port
*dig_port
= enc_to_dig_port(&encoder
->base
);
2016 WARN_ON(link_mst
&& (port
== PORT_A
|| port
== PORT_E
));
2018 intel_dp_set_link_params(intel_dp
, link_rate
, lane_count
,
2020 if (encoder
->type
== INTEL_OUTPUT_EDP
)
2021 intel_edp_panel_on(intel_dp
);
2023 intel_ddi_clk_select(encoder
, pll
);
2025 intel_display_power_get(dev_priv
, dig_port
->ddi_io_power_domain
);
2027 intel_prepare_dp_ddi_buffers(encoder
);
2028 intel_ddi_init_dp_buf_reg(encoder
);
2029 intel_dp_sink_dpms(intel_dp
, DRM_MODE_DPMS_ON
);
2030 intel_dp_start_link_train(intel_dp
);
2031 if (port
!= PORT_A
|| INTEL_GEN(dev_priv
) >= 9)
2032 intel_dp_stop_link_train(intel_dp
);
2035 static void intel_ddi_pre_enable_hdmi(struct intel_encoder
*encoder
,
2037 const struct intel_crtc_state
*crtc_state
,
2038 const struct drm_connector_state
*conn_state
,
2039 struct intel_shared_dpll
*pll
)
2041 struct intel_hdmi
*intel_hdmi
= enc_to_intel_hdmi(&encoder
->base
);
2042 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
2043 struct drm_encoder
*drm_encoder
= &encoder
->base
;
2044 enum port port
= intel_ddi_get_encoder_port(encoder
);
2045 int level
= intel_ddi_hdmi_level(dev_priv
, port
);
2046 struct intel_digital_port
*dig_port
= enc_to_dig_port(&encoder
->base
);
2048 intel_dp_dual_mode_set_tmds_output(intel_hdmi
, true);
2049 intel_ddi_clk_select(encoder
, pll
);
2051 intel_display_power_get(dev_priv
, dig_port
->ddi_io_power_domain
);
2053 intel_prepare_hdmi_ddi_buffers(encoder
);
2054 if (IS_GEN9_BC(dev_priv
))
2055 skl_ddi_set_iboost(encoder
, level
);
2056 else if (IS_GEN9_LP(dev_priv
))
2057 bxt_ddi_vswing_sequence(dev_priv
, level
, port
,
2059 else if (IS_CANNONLAKE(dev_priv
))
2060 cnl_ddi_vswing_sequence(encoder
, level
);
2062 intel_hdmi
->set_infoframes(drm_encoder
,
2064 crtc_state
, conn_state
);
2067 static void intel_ddi_pre_enable(struct intel_encoder
*encoder
,
2068 struct intel_crtc_state
*pipe_config
,
2069 struct drm_connector_state
*conn_state
)
2071 int type
= encoder
->type
;
2073 if (type
== INTEL_OUTPUT_DP
|| type
== INTEL_OUTPUT_EDP
) {
2074 intel_ddi_pre_enable_dp(encoder
,
2075 pipe_config
->port_clock
,
2076 pipe_config
->lane_count
,
2077 pipe_config
->shared_dpll
,
2078 intel_crtc_has_type(pipe_config
,
2079 INTEL_OUTPUT_DP_MST
));
2081 if (type
== INTEL_OUTPUT_HDMI
) {
2082 intel_ddi_pre_enable_hdmi(encoder
,
2083 pipe_config
->has_hdmi_sink
,
2084 pipe_config
, conn_state
,
2085 pipe_config
->shared_dpll
);
2089 static void intel_ddi_post_disable(struct intel_encoder
*intel_encoder
,
2090 struct intel_crtc_state
*old_crtc_state
,
2091 struct drm_connector_state
*old_conn_state
)
2093 struct drm_encoder
*encoder
= &intel_encoder
->base
;
2094 struct drm_i915_private
*dev_priv
= to_i915(encoder
->dev
);
2095 enum port port
= intel_ddi_get_encoder_port(intel_encoder
);
2096 struct intel_digital_port
*dig_port
= enc_to_dig_port(encoder
);
2097 struct intel_dp
*intel_dp
= NULL
;
2098 int type
= intel_encoder
->type
;
2102 /* old_crtc_state and old_conn_state are NULL when called from DP_MST */
2104 if (type
== INTEL_OUTPUT_DP
|| type
== INTEL_OUTPUT_EDP
) {
2105 intel_dp
= enc_to_intel_dp(encoder
);
2106 intel_dp_sink_dpms(intel_dp
, DRM_MODE_DPMS_OFF
);
2109 val
= I915_READ(DDI_BUF_CTL(port
));
2110 if (val
& DDI_BUF_CTL_ENABLE
) {
2111 val
&= ~DDI_BUF_CTL_ENABLE
;
2112 I915_WRITE(DDI_BUF_CTL(port
), val
);
2116 val
= I915_READ(DP_TP_CTL(port
));
2117 val
&= ~(DP_TP_CTL_ENABLE
| DP_TP_CTL_LINK_TRAIN_MASK
);
2118 val
|= DP_TP_CTL_LINK_TRAIN_PAT1
;
2119 I915_WRITE(DP_TP_CTL(port
), val
);
2122 intel_wait_ddi_buf_idle(dev_priv
, port
);
2125 intel_edp_panel_vdd_on(intel_dp
);
2126 intel_edp_panel_off(intel_dp
);
2130 intel_display_power_put(dev_priv
, dig_port
->ddi_io_power_domain
);
2132 if (IS_CANNONLAKE(dev_priv
))
2133 I915_WRITE(DPCLKA_CFGCR0
, I915_READ(DPCLKA_CFGCR0
) |
2134 DPCLKA_CFGCR0_DDI_CLK_OFF(port
));
2135 else if (IS_GEN9_BC(dev_priv
))
2136 I915_WRITE(DPLL_CTRL2
, (I915_READ(DPLL_CTRL2
) |
2137 DPLL_CTRL2_DDI_CLK_OFF(port
)));
2138 else if (INTEL_GEN(dev_priv
) < 9)
2139 I915_WRITE(PORT_CLK_SEL(port
), PORT_CLK_SEL_NONE
);
2141 if (type
== INTEL_OUTPUT_HDMI
) {
2142 struct intel_hdmi
*intel_hdmi
= enc_to_intel_hdmi(encoder
);
2144 intel_dp_dual_mode_set_tmds_output(intel_hdmi
, false);
2148 void intel_ddi_fdi_post_disable(struct intel_encoder
*encoder
,
2149 struct intel_crtc_state
*old_crtc_state
,
2150 struct drm_connector_state
*old_conn_state
)
2152 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
2156 * Bspec lists this as both step 13 (before DDI_BUF_CTL disable)
2157 * and step 18 (after clearing PORT_CLK_SEL). Based on a BUN,
2158 * step 13 is the correct place for it. Step 18 is where it was
2159 * originally before the BUN.
2161 val
= I915_READ(FDI_RX_CTL(PIPE_A
));
2162 val
&= ~FDI_RX_ENABLE
;
2163 I915_WRITE(FDI_RX_CTL(PIPE_A
), val
);
2165 intel_ddi_post_disable(encoder
, old_crtc_state
, old_conn_state
);
2167 val
= I915_READ(FDI_RX_MISC(PIPE_A
));
2168 val
&= ~(FDI_RX_PWRDN_LANE1_MASK
| FDI_RX_PWRDN_LANE0_MASK
);
2169 val
|= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
2170 I915_WRITE(FDI_RX_MISC(PIPE_A
), val
);
2172 val
= I915_READ(FDI_RX_CTL(PIPE_A
));
2174 I915_WRITE(FDI_RX_CTL(PIPE_A
), val
);
2176 val
= I915_READ(FDI_RX_CTL(PIPE_A
));
2177 val
&= ~FDI_RX_PLL_ENABLE
;
2178 I915_WRITE(FDI_RX_CTL(PIPE_A
), val
);
2181 static void intel_enable_ddi(struct intel_encoder
*intel_encoder
,
2182 struct intel_crtc_state
*pipe_config
,
2183 struct drm_connector_state
*conn_state
)
2185 struct drm_encoder
*encoder
= &intel_encoder
->base
;
2186 struct drm_i915_private
*dev_priv
= to_i915(encoder
->dev
);
2187 enum port port
= intel_ddi_get_encoder_port(intel_encoder
);
2188 int type
= intel_encoder
->type
;
2190 if (type
== INTEL_OUTPUT_HDMI
) {
2191 struct intel_digital_port
*intel_dig_port
=
2192 enc_to_dig_port(encoder
);
2193 bool clock_ratio
= pipe_config
->hdmi_high_tmds_clock_ratio
;
2194 bool scrambling
= pipe_config
->hdmi_scrambling
;
2196 intel_hdmi_handle_sink_scrambling(intel_encoder
,
2197 conn_state
->connector
,
2198 clock_ratio
, scrambling
);
2200 /* In HDMI/DVI mode, the port width, and swing/emphasis values
2201 * are ignored so nothing special needs to be done besides
2202 * enabling the port.
2204 I915_WRITE(DDI_BUF_CTL(port
),
2205 intel_dig_port
->saved_port_bits
|
2206 DDI_BUF_CTL_ENABLE
);
2207 } else if (type
== INTEL_OUTPUT_EDP
) {
2208 struct intel_dp
*intel_dp
= enc_to_intel_dp(encoder
);
2210 if (port
== PORT_A
&& INTEL_GEN(dev_priv
) < 9)
2211 intel_dp_stop_link_train(intel_dp
);
2213 intel_edp_backlight_on(pipe_config
, conn_state
);
2214 intel_psr_enable(intel_dp
);
2215 intel_edp_drrs_enable(intel_dp
, pipe_config
);
2218 if (pipe_config
->has_audio
)
2219 intel_audio_codec_enable(intel_encoder
, pipe_config
, conn_state
);
2222 static void intel_disable_ddi(struct intel_encoder
*intel_encoder
,
2223 struct intel_crtc_state
*old_crtc_state
,
2224 struct drm_connector_state
*old_conn_state
)
2226 struct drm_encoder
*encoder
= &intel_encoder
->base
;
2227 int type
= intel_encoder
->type
;
2229 if (old_crtc_state
->has_audio
)
2230 intel_audio_codec_disable(intel_encoder
);
2232 if (type
== INTEL_OUTPUT_HDMI
) {
2233 intel_hdmi_handle_sink_scrambling(intel_encoder
,
2234 old_conn_state
->connector
,
2238 if (type
== INTEL_OUTPUT_EDP
) {
2239 struct intel_dp
*intel_dp
= enc_to_intel_dp(encoder
);
2241 intel_edp_drrs_disable(intel_dp
, old_crtc_state
);
2242 intel_psr_disable(intel_dp
);
2243 intel_edp_backlight_off(old_conn_state
);
2247 static void bxt_ddi_pre_pll_enable(struct intel_encoder
*encoder
,
2248 struct intel_crtc_state
*pipe_config
,
2249 struct drm_connector_state
*conn_state
)
2251 uint8_t mask
= pipe_config
->lane_lat_optim_mask
;
2253 bxt_ddi_phy_set_lane_optim_mask(encoder
, mask
);
2256 void intel_ddi_prepare_link_retrain(struct intel_dp
*intel_dp
)
2258 struct intel_digital_port
*intel_dig_port
= dp_to_dig_port(intel_dp
);
2259 struct drm_i915_private
*dev_priv
=
2260 to_i915(intel_dig_port
->base
.base
.dev
);
2261 enum port port
= intel_dig_port
->port
;
2265 if (I915_READ(DP_TP_CTL(port
)) & DP_TP_CTL_ENABLE
) {
2266 val
= I915_READ(DDI_BUF_CTL(port
));
2267 if (val
& DDI_BUF_CTL_ENABLE
) {
2268 val
&= ~DDI_BUF_CTL_ENABLE
;
2269 I915_WRITE(DDI_BUF_CTL(port
), val
);
2273 val
= I915_READ(DP_TP_CTL(port
));
2274 val
&= ~(DP_TP_CTL_ENABLE
| DP_TP_CTL_LINK_TRAIN_MASK
);
2275 val
|= DP_TP_CTL_LINK_TRAIN_PAT1
;
2276 I915_WRITE(DP_TP_CTL(port
), val
);
2277 POSTING_READ(DP_TP_CTL(port
));
2280 intel_wait_ddi_buf_idle(dev_priv
, port
);
2283 val
= DP_TP_CTL_ENABLE
|
2284 DP_TP_CTL_LINK_TRAIN_PAT1
| DP_TP_CTL_SCRAMBLE_DISABLE
;
2285 if (intel_dp
->link_mst
)
2286 val
|= DP_TP_CTL_MODE_MST
;
2288 val
|= DP_TP_CTL_MODE_SST
;
2289 if (drm_dp_enhanced_frame_cap(intel_dp
->dpcd
))
2290 val
|= DP_TP_CTL_ENHANCED_FRAME_ENABLE
;
2292 I915_WRITE(DP_TP_CTL(port
), val
);
2293 POSTING_READ(DP_TP_CTL(port
));
2295 intel_dp
->DP
|= DDI_BUF_CTL_ENABLE
;
2296 I915_WRITE(DDI_BUF_CTL(port
), intel_dp
->DP
);
2297 POSTING_READ(DDI_BUF_CTL(port
));
2302 bool intel_ddi_is_audio_enabled(struct drm_i915_private
*dev_priv
,
2303 struct intel_crtc
*intel_crtc
)
2307 if (intel_display_power_is_enabled(dev_priv
, POWER_DOMAIN_AUDIO
)) {
2308 temp
= I915_READ(HSW_AUD_PIN_ELD_CP_VLD
);
2309 if (temp
& AUDIO_OUTPUT_ENABLE(intel_crtc
->pipe
))
2315 void intel_ddi_get_config(struct intel_encoder
*encoder
,
2316 struct intel_crtc_state
*pipe_config
)
2318 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
2319 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
2320 enum transcoder cpu_transcoder
= pipe_config
->cpu_transcoder
;
2321 struct intel_hdmi
*intel_hdmi
;
2322 u32 temp
, flags
= 0;
2324 /* XXX: DSI transcoder paranoia */
2325 if (WARN_ON(transcoder_is_dsi(cpu_transcoder
)))
2328 temp
= I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder
));
2329 if (temp
& TRANS_DDI_PHSYNC
)
2330 flags
|= DRM_MODE_FLAG_PHSYNC
;
2332 flags
|= DRM_MODE_FLAG_NHSYNC
;
2333 if (temp
& TRANS_DDI_PVSYNC
)
2334 flags
|= DRM_MODE_FLAG_PVSYNC
;
2336 flags
|= DRM_MODE_FLAG_NVSYNC
;
2338 pipe_config
->base
.adjusted_mode
.flags
|= flags
;
2340 switch (temp
& TRANS_DDI_BPC_MASK
) {
2341 case TRANS_DDI_BPC_6
:
2342 pipe_config
->pipe_bpp
= 18;
2344 case TRANS_DDI_BPC_8
:
2345 pipe_config
->pipe_bpp
= 24;
2347 case TRANS_DDI_BPC_10
:
2348 pipe_config
->pipe_bpp
= 30;
2350 case TRANS_DDI_BPC_12
:
2351 pipe_config
->pipe_bpp
= 36;
2357 switch (temp
& TRANS_DDI_MODE_SELECT_MASK
) {
2358 case TRANS_DDI_MODE_SELECT_HDMI
:
2359 pipe_config
->has_hdmi_sink
= true;
2360 intel_hdmi
= enc_to_intel_hdmi(&encoder
->base
);
2362 if (intel_hdmi
->infoframe_enabled(&encoder
->base
, pipe_config
))
2363 pipe_config
->has_infoframe
= true;
2365 if ((temp
& TRANS_DDI_HDMI_SCRAMBLING_MASK
) ==
2366 TRANS_DDI_HDMI_SCRAMBLING_MASK
)
2367 pipe_config
->hdmi_scrambling
= true;
2368 if (temp
& TRANS_DDI_HIGH_TMDS_CHAR_RATE
)
2369 pipe_config
->hdmi_high_tmds_clock_ratio
= true;
2371 case TRANS_DDI_MODE_SELECT_DVI
:
2372 pipe_config
->lane_count
= 4;
2374 case TRANS_DDI_MODE_SELECT_FDI
:
2376 case TRANS_DDI_MODE_SELECT_DP_SST
:
2377 case TRANS_DDI_MODE_SELECT_DP_MST
:
2378 pipe_config
->lane_count
=
2379 ((temp
& DDI_PORT_WIDTH_MASK
) >> DDI_PORT_WIDTH_SHIFT
) + 1;
2380 intel_dp_get_m_n(intel_crtc
, pipe_config
);
2386 pipe_config
->has_audio
=
2387 intel_ddi_is_audio_enabled(dev_priv
, intel_crtc
);
2389 if (encoder
->type
== INTEL_OUTPUT_EDP
&& dev_priv
->vbt
.edp
.bpp
&&
2390 pipe_config
->pipe_bpp
> dev_priv
->vbt
.edp
.bpp
) {
2392 * This is a big fat ugly hack.
2394 * Some machines in UEFI boot mode provide us a VBT that has 18
2395 * bpp and 1.62 GHz link bandwidth for eDP, which for reasons
2396 * unknown we fail to light up. Yet the same BIOS boots up with
2397 * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as
2398 * max, not what it tells us to use.
2400 * Note: This will still be broken if the eDP panel is not lit
2401 * up by the BIOS, and thus we can't get the mode at module
2404 DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n",
2405 pipe_config
->pipe_bpp
, dev_priv
->vbt
.edp
.bpp
);
2406 dev_priv
->vbt
.edp
.bpp
= pipe_config
->pipe_bpp
;
2409 intel_ddi_clock_get(encoder
, pipe_config
);
2411 if (IS_GEN9_LP(dev_priv
))
2412 pipe_config
->lane_lat_optim_mask
=
2413 bxt_ddi_phy_get_lane_lat_optim_mask(encoder
);
2416 static bool intel_ddi_compute_config(struct intel_encoder
*encoder
,
2417 struct intel_crtc_state
*pipe_config
,
2418 struct drm_connector_state
*conn_state
)
2420 struct drm_i915_private
*dev_priv
= to_i915(encoder
->base
.dev
);
2421 int type
= encoder
->type
;
2422 int port
= intel_ddi_get_encoder_port(encoder
);
2425 WARN(type
== INTEL_OUTPUT_UNKNOWN
, "compute_config() on unknown output!\n");
2428 pipe_config
->cpu_transcoder
= TRANSCODER_EDP
;
2430 if (type
== INTEL_OUTPUT_HDMI
)
2431 ret
= intel_hdmi_compute_config(encoder
, pipe_config
, conn_state
);
2433 ret
= intel_dp_compute_config(encoder
, pipe_config
, conn_state
);
2435 if (IS_GEN9_LP(dev_priv
) && ret
)
2436 pipe_config
->lane_lat_optim_mask
=
2437 bxt_ddi_phy_calc_lane_lat_optim_mask(encoder
,
2438 pipe_config
->lane_count
);
2444 static const struct drm_encoder_funcs intel_ddi_funcs
= {
2445 .reset
= intel_dp_encoder_reset
,
2446 .destroy
= intel_dp_encoder_destroy
,
2449 static struct intel_connector
*
2450 intel_ddi_init_dp_connector(struct intel_digital_port
*intel_dig_port
)
2452 struct intel_connector
*connector
;
2453 enum port port
= intel_dig_port
->port
;
2455 connector
= intel_connector_alloc();
2459 intel_dig_port
->dp
.output_reg
= DDI_BUF_CTL(port
);
2460 if (!intel_dp_init_connector(intel_dig_port
, connector
)) {
2468 static struct intel_connector
*
2469 intel_ddi_init_hdmi_connector(struct intel_digital_port
*intel_dig_port
)
2471 struct intel_connector
*connector
;
2472 enum port port
= intel_dig_port
->port
;
2474 connector
= intel_connector_alloc();
2478 intel_dig_port
->hdmi
.hdmi_reg
= DDI_BUF_CTL(port
);
2479 intel_hdmi_init_connector(intel_dig_port
, connector
);
2484 void intel_ddi_init(struct drm_i915_private
*dev_priv
, enum port port
)
2486 struct intel_digital_port
*intel_dig_port
;
2487 struct intel_encoder
*intel_encoder
;
2488 struct drm_encoder
*encoder
;
2489 bool init_hdmi
, init_dp
, init_lspcon
= false;
2492 if (I915_READ(DDI_BUF_CTL(PORT_A
)) & DDI_A_4_LANES
) {
2518 init_hdmi
= (dev_priv
->vbt
.ddi_port_info
[port
].supports_dvi
||
2519 dev_priv
->vbt
.ddi_port_info
[port
].supports_hdmi
);
2520 init_dp
= dev_priv
->vbt
.ddi_port_info
[port
].supports_dp
;
2522 if (intel_bios_is_lspcon_present(dev_priv
, port
)) {
2524 * Lspcon device needs to be driven with DP connector
2525 * with special detection sequence. So make sure DP
2526 * is initialized before lspcon.
2531 DRM_DEBUG_KMS("VBT says port %c has lspcon\n", port_name(port
));
2534 if (!init_dp
&& !init_hdmi
) {
2535 DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, respect it\n",
2540 intel_dig_port
= kzalloc(sizeof(*intel_dig_port
), GFP_KERNEL
);
2541 if (!intel_dig_port
)
2544 intel_encoder
= &intel_dig_port
->base
;
2545 encoder
= &intel_encoder
->base
;
2547 drm_encoder_init(&dev_priv
->drm
, encoder
, &intel_ddi_funcs
,
2548 DRM_MODE_ENCODER_TMDS
, "DDI %c", port_name(port
));
2550 intel_encoder
->compute_config
= intel_ddi_compute_config
;
2551 intel_encoder
->enable
= intel_enable_ddi
;
2552 if (IS_GEN9_LP(dev_priv
))
2553 intel_encoder
->pre_pll_enable
= bxt_ddi_pre_pll_enable
;
2554 intel_encoder
->pre_enable
= intel_ddi_pre_enable
;
2555 intel_encoder
->disable
= intel_disable_ddi
;
2556 intel_encoder
->post_disable
= intel_ddi_post_disable
;
2557 intel_encoder
->get_hw_state
= intel_ddi_get_hw_state
;
2558 intel_encoder
->get_config
= intel_ddi_get_config
;
2559 intel_encoder
->suspend
= intel_dp_encoder_suspend
;
2560 intel_encoder
->get_power_domains
= intel_ddi_get_power_domains
;
2562 intel_dig_port
->port
= port
;
2563 intel_dig_port
->saved_port_bits
= I915_READ(DDI_BUF_CTL(port
)) &
2564 (DDI_BUF_PORT_REVERSAL
|
2569 intel_dig_port
->ddi_io_power_domain
=
2570 POWER_DOMAIN_PORT_DDI_A_IO
;
2573 intel_dig_port
->ddi_io_power_domain
=
2574 POWER_DOMAIN_PORT_DDI_B_IO
;
2577 intel_dig_port
->ddi_io_power_domain
=
2578 POWER_DOMAIN_PORT_DDI_C_IO
;
2581 intel_dig_port
->ddi_io_power_domain
=
2582 POWER_DOMAIN_PORT_DDI_D_IO
;
2585 intel_dig_port
->ddi_io_power_domain
=
2586 POWER_DOMAIN_PORT_DDI_E_IO
;
2593 * Bspec says that DDI_A_4_LANES is the only supported configuration
2594 * for Broxton. Yet some BIOS fail to set this bit on port A if eDP
2595 * wasn't lit up at boot. Force this bit on in our internal
2596 * configuration so that we use the proper lane count for our
2599 if (IS_GEN9_LP(dev_priv
) && port
== PORT_A
) {
2600 if (!(intel_dig_port
->saved_port_bits
& DDI_A_4_LANES
)) {
2601 DRM_DEBUG_KMS("BXT BIOS forgot to set DDI_A_4_LANES for port A; fixing\n");
2602 intel_dig_port
->saved_port_bits
|= DDI_A_4_LANES
;
2607 intel_dig_port
->max_lanes
= max_lanes
;
2609 intel_encoder
->type
= INTEL_OUTPUT_UNKNOWN
;
2610 intel_encoder
->power_domain
= intel_port_to_power_domain(port
);
2611 intel_encoder
->port
= port
;
2612 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
2613 intel_encoder
->cloneable
= 0;
2616 if (!intel_ddi_init_dp_connector(intel_dig_port
))
2619 intel_dig_port
->hpd_pulse
= intel_dp_hpd_pulse
;
2620 dev_priv
->hotplug
.irq_port
[port
] = intel_dig_port
;
2623 /* In theory we don't need the encoder->type check, but leave it just in
2624 * case we have some really bad VBTs... */
2625 if (intel_encoder
->type
!= INTEL_OUTPUT_EDP
&& init_hdmi
) {
2626 if (!intel_ddi_init_hdmi_connector(intel_dig_port
))
2631 if (lspcon_init(intel_dig_port
))
2632 /* TODO: handle hdmi info frame part */
2633 DRM_DEBUG_KMS("LSPCON init success on port %c\n",
2637 * LSPCON init faied, but DP init was success, so
2638 * lets try to drive as DP++ port.
2640 DRM_ERROR("LSPCON init failed on port %c\n",
2647 drm_encoder_cleanup(encoder
);
2648 kfree(intel_dig_port
);