1 /*
2 * Copyright © 2012 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
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
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eugeni Dodonov <eugeni.dodonov@intel.com>
25 *
26 */
27
28 #include "i915_drv.h"
29 #include "intel_drv.h"
30
31 /* HDMI/DVI modes ignore everything but the last 2 items. So we share
32 * them for both DP and FDI transports, allowing those ports to
33 * automatically adapt to HDMI connections as well
34 */
35 static const u32 hsw_ddi_translations_dp[] = {
36 0x00FFFFFF, 0x0006000E, /* DP parameters */
37 0x00D75FFF, 0x0005000A,
38 0x00C30FFF, 0x00040006,
39 0x80AAAFFF, 0x000B0000,
40 0x00FFFFFF, 0x0005000A,
41 0x00D75FFF, 0x000C0004,
42 0x80C30FFF, 0x000B0000,
43 0x00FFFFFF, 0x00040006,
44 0x80D75FFF, 0x000B0000,
45 0x00FFFFFF, 0x00040006 /* HDMI parameters */
46 };
47
48 static const u32 hsw_ddi_translations_fdi[] = {
49 0x00FFFFFF, 0x0007000E, /* FDI parameters */
50 0x00D75FFF, 0x000F000A,
51 0x00C30FFF, 0x00060006,
52 0x00AAAFFF, 0x001E0000,
53 0x00FFFFFF, 0x000F000A,
54 0x00D75FFF, 0x00160004,
55 0x00C30FFF, 0x001E0000,
56 0x00FFFFFF, 0x00060006,
57 0x00D75FFF, 0x001E0000,
58 0x00FFFFFF, 0x00040006 /* HDMI parameters */
59 };
60
intel_ddi_get_encoder_port(struct intel_encoder * intel_encoder)61 static enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder)
62 {
63 struct drm_encoder *encoder = &intel_encoder->base;
64 int type = intel_encoder->type;
65
66 if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP ||
67 type == INTEL_OUTPUT_HDMI || type == INTEL_OUTPUT_UNKNOWN) {
68 struct intel_digital_port *intel_dig_port =
69 enc_to_dig_port(encoder);
70 return intel_dig_port->port;
71
72 } else if (type == INTEL_OUTPUT_ANALOG) {
73 return PORT_E;
74
75 } else {
76 DRM_ERROR("Invalid DDI encoder type %d\n", type);
77 BUG();
78 }
79 }
80
81 /* On Haswell, DDI port buffers must be programmed with correct values
82 * in advance. The buffer values are different for FDI and DP modes,
83 * but the HDMI/DVI fields are shared among those. So we program the DDI
84 * in either FDI or DP modes only, as HDMI connections will work with both
85 * of those
86 */
intel_prepare_ddi_buffers(struct drm_device * dev,enum port port,bool use_fdi_mode)87 static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port,
88 bool use_fdi_mode)
89 {
90 struct drm_i915_private *dev_priv = dev->dev_private;
91 u32 reg;
92 int i;
93 const u32 *ddi_translations = ((use_fdi_mode) ?
94 hsw_ddi_translations_fdi :
95 hsw_ddi_translations_dp);
96
97 DRM_DEBUG_DRIVER("Initializing DDI buffers for port %c in %s mode\n",
98 port_name(port),
99 use_fdi_mode ? "FDI" : "DP");
100
101 WARN((use_fdi_mode && (port != PORT_E)),
102 "Programming port %c in FDI mode, this probably will not work.\n",
103 port_name(port));
104
105 for (i=0, reg=DDI_BUF_TRANS(port); i < ARRAY_SIZE(hsw_ddi_translations_fdi); i++) {
106 I915_WRITE(reg, ddi_translations[i]);
107 reg += 4;
108 }
109 }
110
111 /* Program DDI buffers translations for DP. By default, program ports A-D in DP
112 * mode and port E for FDI.
113 */
intel_prepare_ddi(struct drm_device * dev)114 void intel_prepare_ddi(struct drm_device *dev)
115 {
116 int port;
117
118 if (!HAS_DDI(dev))
119 return;
120
121 for (port = PORT_A; port < PORT_E; port++)
122 intel_prepare_ddi_buffers(dev, port, false);
123
124 /* DDI E is the suggested one to work in FDI mode, so program is as such
125 * by default. It will have to be re-programmed in case a digital DP
126 * output will be detected on it
127 */
128 intel_prepare_ddi_buffers(dev, PORT_E, true);
129 }
130
131 static const long hsw_ddi_buf_ctl_values[] = {
132 DDI_BUF_EMP_400MV_0DB_HSW,
133 DDI_BUF_EMP_400MV_3_5DB_HSW,
134 DDI_BUF_EMP_400MV_6DB_HSW,
135 DDI_BUF_EMP_400MV_9_5DB_HSW,
136 DDI_BUF_EMP_600MV_0DB_HSW,
137 DDI_BUF_EMP_600MV_3_5DB_HSW,
138 DDI_BUF_EMP_600MV_6DB_HSW,
139 DDI_BUF_EMP_800MV_0DB_HSW,
140 DDI_BUF_EMP_800MV_3_5DB_HSW
141 };
142
intel_wait_ddi_buf_idle(struct drm_i915_private * dev_priv,enum port port)143 static void intel_wait_ddi_buf_idle(struct drm_i915_private *dev_priv,
144 enum port port)
145 {
146 uint32_t reg = DDI_BUF_CTL(port);
147 int i;
148
149 for (i = 0; i < 8; i++) {
150 udelay(1);
151 if (I915_READ(reg) & DDI_BUF_IS_IDLE)
152 return;
153 }
154 DRM_ERROR("Timeout waiting for DDI BUF %c idle bit\n", port_name(port));
155 }
156
157 /* Starting with Haswell, different DDI ports can work in FDI mode for
158 * connection to the PCH-located connectors. For this, it is necessary to train
159 * both the DDI port and PCH receiver for the desired DDI buffer settings.
160 *
161 * The recommended port to work in FDI mode is DDI E, which we use here. Also,
162 * please note that when FDI mode is active on DDI E, it shares 2 lines with
163 * DDI A (which is used for eDP)
164 */
165
hsw_fdi_link_train(struct drm_crtc * crtc)166 void hsw_fdi_link_train(struct drm_crtc *crtc)
167 {
168 struct drm_device *dev = crtc->dev;
169 struct drm_i915_private *dev_priv = dev->dev_private;
170 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
171 u32 temp, i, rx_ctl_val;
172
173 /* Set the FDI_RX_MISC pwrdn lanes and the 2 workarounds listed at the
174 * mode set "sequence for CRT port" document:
175 * - TP1 to TP2 time with the default value
176 * - FDI delay to 90h
177 */
178 I915_WRITE(_FDI_RXA_MISC, FDI_RX_PWRDN_LANE1_VAL(2) |
179 FDI_RX_PWRDN_LANE0_VAL(2) |
180 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
181
182 /* Enable the PCH Receiver FDI PLL */
183 rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
184 FDI_RX_PLL_ENABLE | ((intel_crtc->fdi_lanes - 1) << 19);
185 I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
186 POSTING_READ(_FDI_RXA_CTL);
187 udelay(220);
188
189 /* Switch from Rawclk to PCDclk */
190 rx_ctl_val |= FDI_PCDCLK;
191 I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
192
193 /* Configure Port Clock Select */
194 I915_WRITE(PORT_CLK_SEL(PORT_E), intel_crtc->ddi_pll_sel);
195
196 /* Start the training iterating through available voltages and emphasis,
197 * testing each value twice. */
198 for (i = 0; i < ARRAY_SIZE(hsw_ddi_buf_ctl_values) * 2; i++) {
199 /* Configure DP_TP_CTL with auto-training */
200 I915_WRITE(DP_TP_CTL(PORT_E),
201 DP_TP_CTL_FDI_AUTOTRAIN |
202 DP_TP_CTL_ENHANCED_FRAME_ENABLE |
203 DP_TP_CTL_LINK_TRAIN_PAT1 |
204 DP_TP_CTL_ENABLE);
205
206 /* Configure and enable DDI_BUF_CTL for DDI E with next voltage.
207 * DDI E does not support port reversal, the functionality is
208 * achieved on the PCH side in FDI_RX_CTL, so no need to set the
209 * port reversal bit */
210 I915_WRITE(DDI_BUF_CTL(PORT_E),
211 DDI_BUF_CTL_ENABLE |
212 ((intel_crtc->fdi_lanes - 1) << 1) |
213 hsw_ddi_buf_ctl_values[i / 2]);
214 POSTING_READ(DDI_BUF_CTL(PORT_E));
215
216 udelay(600);
217
218 /* Program PCH FDI Receiver TU */
219 I915_WRITE(_FDI_RXA_TUSIZE1, TU_SIZE(64));
220
221 /* Enable PCH FDI Receiver with auto-training */
222 rx_ctl_val |= FDI_RX_ENABLE | FDI_LINK_TRAIN_AUTO;
223 I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
224 POSTING_READ(_FDI_RXA_CTL);
225
226 /* Wait for FDI receiver lane calibration */
227 udelay(30);
228
229 /* Unset FDI_RX_MISC pwrdn lanes */
230 temp = I915_READ(_FDI_RXA_MISC);
231 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
232 I915_WRITE(_FDI_RXA_MISC, temp);
233 POSTING_READ(_FDI_RXA_MISC);
234
235 /* Wait for FDI auto training time */
236 udelay(5);
237
238 temp = I915_READ(DP_TP_STATUS(PORT_E));
239 if (temp & DP_TP_STATUS_AUTOTRAIN_DONE) {
240 DRM_DEBUG_KMS("FDI link training done on step %d\n", i);
241
242 /* Enable normal pixel sending for FDI */
243 I915_WRITE(DP_TP_CTL(PORT_E),
244 DP_TP_CTL_FDI_AUTOTRAIN |
245 DP_TP_CTL_LINK_TRAIN_NORMAL |
246 DP_TP_CTL_ENHANCED_FRAME_ENABLE |
247 DP_TP_CTL_ENABLE);
248
249 return;
250 }
251
252 temp = I915_READ(DDI_BUF_CTL(PORT_E));
253 temp &= ~DDI_BUF_CTL_ENABLE;
254 I915_WRITE(DDI_BUF_CTL(PORT_E), temp);
255 POSTING_READ(DDI_BUF_CTL(PORT_E));
256
257 /* Disable DP_TP_CTL and FDI_RX_CTL and retry */
258 temp = I915_READ(DP_TP_CTL(PORT_E));
259 temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
260 temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
261 I915_WRITE(DP_TP_CTL(PORT_E), temp);
262 POSTING_READ(DP_TP_CTL(PORT_E));
263
264 intel_wait_ddi_buf_idle(dev_priv, PORT_E);
265
266 rx_ctl_val &= ~FDI_RX_ENABLE;
267 I915_WRITE(_FDI_RXA_CTL, rx_ctl_val);
268 POSTING_READ(_FDI_RXA_CTL);
269
270 /* Reset FDI_RX_MISC pwrdn lanes */
271 temp = I915_READ(_FDI_RXA_MISC);
272 temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
273 temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
274 I915_WRITE(_FDI_RXA_MISC, temp);
275 POSTING_READ(_FDI_RXA_MISC);
276 }
277
278 DRM_ERROR("FDI link training failed!\n");
279 }
280
281 /* WRPLL clock dividers */
282 struct wrpll_tmds_clock {
283 u32 clock;
284 u16 p; /* Post divider */
285 u16 n2; /* Feedback divider */
286 u16 r2; /* Reference divider */
287 };
288
289 /* Table of matching values for WRPLL clocks programming for each frequency.
290 * The code assumes this table is sorted. */
291 static const struct wrpll_tmds_clock wrpll_tmds_clock_table[] = {
292 {19750, 38, 25, 18},
293 {20000, 48, 32, 18},
294 {21000, 36, 21, 15},
295 {21912, 42, 29, 17},
296 {22000, 36, 22, 15},
297 {23000, 36, 23, 15},
298 {23500, 40, 40, 23},
299 {23750, 26, 16, 14},
300 {24000, 36, 24, 15},
301 {25000, 36, 25, 15},
302 {25175, 26, 40, 33},
303 {25200, 30, 21, 15},
304 {26000, 36, 26, 15},
305 {27000, 30, 21, 14},
306 {27027, 18, 100, 111},
307 {27500, 30, 29, 19},
308 {28000, 34, 30, 17},
309 {28320, 26, 30, 22},
310 {28322, 32, 42, 25},
311 {28750, 24, 23, 18},
312 {29000, 30, 29, 18},
313 {29750, 32, 30, 17},
314 {30000, 30, 25, 15},
315 {30750, 30, 41, 24},
316 {31000, 30, 31, 18},
317 {31500, 30, 28, 16},
318 {32000, 30, 32, 18},
319 {32500, 28, 32, 19},
320 {33000, 24, 22, 15},
321 {34000, 28, 30, 17},
322 {35000, 26, 32, 19},
323 {35500, 24, 30, 19},
324 {36000, 26, 26, 15},
325 {36750, 26, 46, 26},
326 {37000, 24, 23, 14},
327 {37762, 22, 40, 26},
328 {37800, 20, 21, 15},
329 {38000, 24, 27, 16},
330 {38250, 24, 34, 20},
331 {39000, 24, 26, 15},
332 {40000, 24, 32, 18},
333 {40500, 20, 21, 14},
334 {40541, 22, 147, 89},
335 {40750, 18, 19, 14},
336 {41000, 16, 17, 14},
337 {41500, 22, 44, 26},
338 {41540, 22, 44, 26},
339 {42000, 18, 21, 15},
340 {42500, 22, 45, 26},
341 {43000, 20, 43, 27},
342 {43163, 20, 24, 15},
343 {44000, 18, 22, 15},
344 {44900, 20, 108, 65},
345 {45000, 20, 25, 15},
346 {45250, 20, 52, 31},
347 {46000, 18, 23, 15},
348 {46750, 20, 45, 26},
349 {47000, 20, 40, 23},
350 {48000, 18, 24, 15},
351 {49000, 18, 49, 30},
352 {49500, 16, 22, 15},
353 {50000, 18, 25, 15},
354 {50500, 18, 32, 19},
355 {51000, 18, 34, 20},
356 {52000, 18, 26, 15},
357 {52406, 14, 34, 25},
358 {53000, 16, 22, 14},
359 {54000, 16, 24, 15},
360 {54054, 16, 173, 108},
361 {54500, 14, 24, 17},
362 {55000, 12, 22, 18},
363 {56000, 14, 45, 31},
364 {56250, 16, 25, 15},
365 {56750, 14, 25, 17},
366 {57000, 16, 27, 16},
367 {58000, 16, 43, 25},
368 {58250, 16, 38, 22},
369 {58750, 16, 40, 23},
370 {59000, 14, 26, 17},
371 {59341, 14, 40, 26},
372 {59400, 16, 44, 25},
373 {60000, 16, 32, 18},
374 {60500, 12, 39, 29},
375 {61000, 14, 49, 31},
376 {62000, 14, 37, 23},
377 {62250, 14, 42, 26},
378 {63000, 12, 21, 15},
379 {63500, 14, 28, 17},
380 {64000, 12, 27, 19},
381 {65000, 14, 32, 19},
382 {65250, 12, 29, 20},
383 {65500, 12, 32, 22},
384 {66000, 12, 22, 15},
385 {66667, 14, 38, 22},
386 {66750, 10, 21, 17},
387 {67000, 14, 33, 19},
388 {67750, 14, 58, 33},
389 {68000, 14, 30, 17},
390 {68179, 14, 46, 26},
391 {68250, 14, 46, 26},
392 {69000, 12, 23, 15},
393 {70000, 12, 28, 18},
394 {71000, 12, 30, 19},
395 {72000, 12, 24, 15},
396 {73000, 10, 23, 17},
397 {74000, 12, 23, 14},
398 {74176, 8, 100, 91},
399 {74250, 10, 22, 16},
400 {74481, 12, 43, 26},
401 {74500, 10, 29, 21},
402 {75000, 12, 25, 15},
403 {75250, 10, 39, 28},
404 {76000, 12, 27, 16},
405 {77000, 12, 53, 31},
406 {78000, 12, 26, 15},
407 {78750, 12, 28, 16},
408 {79000, 10, 38, 26},
409 {79500, 10, 28, 19},
410 {80000, 12, 32, 18},
411 {81000, 10, 21, 14},
412 {81081, 6, 100, 111},
413 {81624, 8, 29, 24},
414 {82000, 8, 17, 14},
415 {83000, 10, 40, 26},
416 {83950, 10, 28, 18},
417 {84000, 10, 28, 18},
418 {84750, 6, 16, 17},
419 {85000, 6, 17, 18},
420 {85250, 10, 30, 19},
421 {85750, 10, 27, 17},
422 {86000, 10, 43, 27},
423 {87000, 10, 29, 18},
424 {88000, 10, 44, 27},
425 {88500, 10, 41, 25},
426 {89000, 10, 28, 17},
427 {89012, 6, 90, 91},
428 {89100, 10, 33, 20},
429 {90000, 10, 25, 15},
430 {91000, 10, 32, 19},
431 {92000, 10, 46, 27},
432 {93000, 10, 31, 18},
433 {94000, 10, 40, 23},
434 {94500, 10, 28, 16},
435 {95000, 10, 44, 25},
436 {95654, 10, 39, 22},
437 {95750, 10, 39, 22},
438 {96000, 10, 32, 18},
439 {97000, 8, 23, 16},
440 {97750, 8, 42, 29},
441 {98000, 8, 45, 31},
442 {99000, 8, 22, 15},
443 {99750, 8, 34, 23},
444 {100000, 6, 20, 18},
445 {100500, 6, 19, 17},
446 {101000, 6, 37, 33},
447 {101250, 8, 21, 14},
448 {102000, 6, 17, 15},
449 {102250, 6, 25, 22},
450 {103000, 8, 29, 19},
451 {104000, 8, 37, 24},
452 {105000, 8, 28, 18},
453 {106000, 8, 22, 14},
454 {107000, 8, 46, 29},
455 {107214, 8, 27, 17},
456 {108000, 8, 24, 15},
457 {108108, 8, 173, 108},
458 {109000, 6, 23, 19},
459 {110000, 6, 22, 18},
460 {110013, 6, 22, 18},
461 {110250, 8, 49, 30},
462 {110500, 8, 36, 22},
463 {111000, 8, 23, 14},
464 {111264, 8, 150, 91},
465 {111375, 8, 33, 20},
466 {112000, 8, 63, 38},
467 {112500, 8, 25, 15},
468 {113100, 8, 57, 34},
469 {113309, 8, 42, 25},
470 {114000, 8, 27, 16},
471 {115000, 6, 23, 18},
472 {116000, 8, 43, 25},
473 {117000, 8, 26, 15},
474 {117500, 8, 40, 23},
475 {118000, 6, 38, 29},
476 {119000, 8, 30, 17},
477 {119500, 8, 46, 26},
478 {119651, 8, 39, 22},
479 {120000, 8, 32, 18},
480 {121000, 6, 39, 29},
481 {121250, 6, 31, 23},
482 {121750, 6, 23, 17},
483 {122000, 6, 42, 31},
484 {122614, 6, 30, 22},
485 {123000, 6, 41, 30},
486 {123379, 6, 37, 27},
487 {124000, 6, 51, 37},
488 {125000, 6, 25, 18},
489 {125250, 4, 13, 14},
490 {125750, 4, 27, 29},
491 {126000, 6, 21, 15},
492 {127000, 6, 24, 17},
493 {127250, 6, 41, 29},
494 {128000, 6, 27, 19},
495 {129000, 6, 43, 30},
496 {129859, 4, 25, 26},
497 {130000, 6, 26, 18},
498 {130250, 6, 42, 29},
499 {131000, 6, 32, 22},
500 {131500, 6, 38, 26},
501 {131850, 6, 41, 28},
502 {132000, 6, 22, 15},
503 {132750, 6, 28, 19},
504 {133000, 6, 34, 23},
505 {133330, 6, 37, 25},
506 {134000, 6, 61, 41},
507 {135000, 6, 21, 14},
508 {135250, 6, 167, 111},
509 {136000, 6, 62, 41},
510 {137000, 6, 35, 23},
511 {138000, 6, 23, 15},
512 {138500, 6, 40, 26},
513 {138750, 6, 37, 24},
514 {139000, 6, 34, 22},
515 {139050, 6, 34, 22},
516 {139054, 6, 34, 22},
517 {140000, 6, 28, 18},
518 {141000, 6, 36, 23},
519 {141500, 6, 22, 14},
520 {142000, 6, 30, 19},
521 {143000, 6, 27, 17},
522 {143472, 4, 17, 16},
523 {144000, 6, 24, 15},
524 {145000, 6, 29, 18},
525 {146000, 6, 47, 29},
526 {146250, 6, 26, 16},
527 {147000, 6, 49, 30},
528 {147891, 6, 23, 14},
529 {148000, 6, 23, 14},
530 {148250, 6, 28, 17},
531 {148352, 4, 100, 91},
532 {148500, 6, 33, 20},
533 {149000, 6, 48, 29},
534 {150000, 6, 25, 15},
535 {151000, 4, 19, 17},
536 {152000, 6, 27, 16},
537 {152280, 6, 44, 26},
538 {153000, 6, 34, 20},
539 {154000, 6, 53, 31},
540 {155000, 6, 31, 18},
541 {155250, 6, 50, 29},
542 {155750, 6, 45, 26},
543 {156000, 6, 26, 15},
544 {157000, 6, 61, 35},
545 {157500, 6, 28, 16},
546 {158000, 6, 65, 37},
547 {158250, 6, 44, 25},
548 {159000, 6, 53, 30},
549 {159500, 6, 39, 22},
550 {160000, 6, 32, 18},
551 {161000, 4, 31, 26},
552 {162000, 4, 18, 15},
553 {162162, 4, 131, 109},
554 {162500, 4, 53, 44},
555 {163000, 4, 29, 24},
556 {164000, 4, 17, 14},
557 {165000, 4, 22, 18},
558 {166000, 4, 32, 26},
559 {167000, 4, 26, 21},
560 {168000, 4, 46, 37},
561 {169000, 4, 104, 83},
562 {169128, 4, 64, 51},
563 {169500, 4, 39, 31},
564 {170000, 4, 34, 27},
565 {171000, 4, 19, 15},
566 {172000, 4, 51, 40},
567 {172750, 4, 32, 25},
568 {172800, 4, 32, 25},
569 {173000, 4, 41, 32},
570 {174000, 4, 49, 38},
571 {174787, 4, 22, 17},
572 {175000, 4, 35, 27},
573 {176000, 4, 30, 23},
574 {177000, 4, 38, 29},
575 {178000, 4, 29, 22},
576 {178500, 4, 37, 28},
577 {179000, 4, 53, 40},
578 {179500, 4, 73, 55},
579 {180000, 4, 20, 15},
580 {181000, 4, 55, 41},
581 {182000, 4, 31, 23},
582 {183000, 4, 42, 31},
583 {184000, 4, 30, 22},
584 {184750, 4, 26, 19},
585 {185000, 4, 37, 27},
586 {186000, 4, 51, 37},
587 {187000, 4, 36, 26},
588 {188000, 4, 32, 23},
589 {189000, 4, 21, 15},
590 {190000, 4, 38, 27},
591 {190960, 4, 41, 29},
592 {191000, 4, 41, 29},
593 {192000, 4, 27, 19},
594 {192250, 4, 37, 26},
595 {193000, 4, 20, 14},
596 {193250, 4, 53, 37},
597 {194000, 4, 23, 16},
598 {194208, 4, 23, 16},
599 {195000, 4, 26, 18},
600 {196000, 4, 45, 31},
601 {197000, 4, 35, 24},
602 {197750, 4, 41, 28},
603 {198000, 4, 22, 15},
604 {198500, 4, 25, 17},
605 {199000, 4, 28, 19},
606 {200000, 4, 37, 25},
607 {201000, 4, 61, 41},
608 {202000, 4, 112, 75},
609 {202500, 4, 21, 14},
610 {203000, 4, 146, 97},
611 {204000, 4, 62, 41},
612 {204750, 4, 44, 29},
613 {205000, 4, 38, 25},
614 {206000, 4, 29, 19},
615 {207000, 4, 23, 15},
616 {207500, 4, 40, 26},
617 {208000, 4, 37, 24},
618 {208900, 4, 48, 31},
619 {209000, 4, 48, 31},
620 {209250, 4, 31, 20},
621 {210000, 4, 28, 18},
622 {211000, 4, 25, 16},
623 {212000, 4, 22, 14},
624 {213000, 4, 30, 19},
625 {213750, 4, 38, 24},
626 {214000, 4, 46, 29},
627 {214750, 4, 35, 22},
628 {215000, 4, 43, 27},
629 {216000, 4, 24, 15},
630 {217000, 4, 37, 23},
631 {218000, 4, 42, 26},
632 {218250, 4, 42, 26},
633 {218750, 4, 34, 21},
634 {219000, 4, 47, 29},
635 {220000, 4, 44, 27},
636 {220640, 4, 49, 30},
637 {220750, 4, 36, 22},
638 {221000, 4, 36, 22},
639 {222000, 4, 23, 14},
640 {222525, 4, 28, 17},
641 {222750, 4, 33, 20},
642 {227000, 4, 37, 22},
643 {230250, 4, 29, 17},
644 {233500, 4, 38, 22},
645 {235000, 4, 40, 23},
646 {238000, 4, 30, 17},
647 {241500, 2, 17, 19},
648 {245250, 2, 20, 22},
649 {247750, 2, 22, 24},
650 {253250, 2, 15, 16},
651 {256250, 2, 18, 19},
652 {262500, 2, 31, 32},
653 {267250, 2, 66, 67},
654 {268500, 2, 94, 95},
655 {270000, 2, 14, 14},
656 {272500, 2, 77, 76},
657 {273750, 2, 57, 56},
658 {280750, 2, 24, 23},
659 {281250, 2, 23, 22},
660 {286000, 2, 17, 16},
661 {291750, 2, 26, 24},
662 {296703, 2, 56, 51},
663 {297000, 2, 22, 20},
664 {298000, 2, 21, 19},
665 };
666
intel_ddi_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)667 static void intel_ddi_mode_set(struct drm_encoder *encoder,
668 struct drm_display_mode *mode,
669 struct drm_display_mode *adjusted_mode)
670 {
671 struct drm_crtc *crtc = encoder->crtc;
672 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
673 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
674 int port = intel_ddi_get_encoder_port(intel_encoder);
675 int pipe = intel_crtc->pipe;
676 int type = intel_encoder->type;
677
678 DRM_DEBUG_KMS("Preparing DDI mode for Haswell on port %c, pipe %c\n",
679 port_name(port), pipe_name(pipe));
680
681 intel_crtc->eld_vld = false;
682 if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
683 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
684 struct intel_digital_port *intel_dig_port =
685 enc_to_dig_port(encoder);
686
687 intel_dp->DP = intel_dig_port->port_reversal |
688 DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW;
689 switch (intel_dp->lane_count) {
690 case 1:
691 intel_dp->DP |= DDI_PORT_WIDTH_X1;
692 break;
693 case 2:
694 intel_dp->DP |= DDI_PORT_WIDTH_X2;
695 break;
696 case 4:
697 intel_dp->DP |= DDI_PORT_WIDTH_X4;
698 break;
699 default:
700 intel_dp->DP |= DDI_PORT_WIDTH_X4;
701 WARN(1, "Unexpected DP lane count %d\n",
702 intel_dp->lane_count);
703 break;
704 }
705
706 if (intel_dp->has_audio) {
707 DRM_DEBUG_DRIVER("DP audio on pipe %c on DDI\n",
708 pipe_name(intel_crtc->pipe));
709
710 /* write eld */
711 DRM_DEBUG_DRIVER("DP audio: write eld information\n");
712 intel_write_eld(encoder, adjusted_mode);
713 }
714
715 intel_dp_init_link_config(intel_dp);
716
717 } else if (type == INTEL_OUTPUT_HDMI) {
718 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
719
720 if (intel_hdmi->has_audio) {
721 /* Proper support for digital audio needs a new logic
722 * and a new set of registers, so we leave it for future
723 * patch bombing.
724 */
725 DRM_DEBUG_DRIVER("HDMI audio on pipe %c on DDI\n",
726 pipe_name(intel_crtc->pipe));
727
728 /* write eld */
729 DRM_DEBUG_DRIVER("HDMI audio: write eld information\n");
730 intel_write_eld(encoder, adjusted_mode);
731 }
732
733 intel_hdmi->set_infoframes(encoder, adjusted_mode);
734 }
735 }
736
737 static struct intel_encoder *
intel_ddi_get_crtc_encoder(struct drm_crtc * crtc)738 intel_ddi_get_crtc_encoder(struct drm_crtc *crtc)
739 {
740 struct drm_device *dev = crtc->dev;
741 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
742 struct intel_encoder *intel_encoder, *ret = NULL;
743 int num_encoders = 0;
744
745 for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
746 ret = intel_encoder;
747 num_encoders++;
748 }
749
750 if (num_encoders != 1)
751 WARN(1, "%d encoders on crtc for pipe %d\n", num_encoders,
752 intel_crtc->pipe);
753
754 BUG_ON(ret == NULL);
755 return ret;
756 }
757
intel_ddi_put_crtc_pll(struct drm_crtc * crtc)758 void intel_ddi_put_crtc_pll(struct drm_crtc *crtc)
759 {
760 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
761 struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
762 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
763 uint32_t val;
764
765 switch (intel_crtc->ddi_pll_sel) {
766 case PORT_CLK_SEL_SPLL:
767 plls->spll_refcount--;
768 if (plls->spll_refcount == 0) {
769 DRM_DEBUG_KMS("Disabling SPLL\n");
770 val = I915_READ(SPLL_CTL);
771 WARN_ON(!(val & SPLL_PLL_ENABLE));
772 I915_WRITE(SPLL_CTL, val & ~SPLL_PLL_ENABLE);
773 POSTING_READ(SPLL_CTL);
774 }
775 break;
776 case PORT_CLK_SEL_WRPLL1:
777 plls->wrpll1_refcount--;
778 if (plls->wrpll1_refcount == 0) {
779 DRM_DEBUG_KMS("Disabling WRPLL 1\n");
780 val = I915_READ(WRPLL_CTL1);
781 WARN_ON(!(val & WRPLL_PLL_ENABLE));
782 I915_WRITE(WRPLL_CTL1, val & ~WRPLL_PLL_ENABLE);
783 POSTING_READ(WRPLL_CTL1);
784 }
785 break;
786 case PORT_CLK_SEL_WRPLL2:
787 plls->wrpll2_refcount--;
788 if (plls->wrpll2_refcount == 0) {
789 DRM_DEBUG_KMS("Disabling WRPLL 2\n");
790 val = I915_READ(WRPLL_CTL2);
791 WARN_ON(!(val & WRPLL_PLL_ENABLE));
792 I915_WRITE(WRPLL_CTL2, val & ~WRPLL_PLL_ENABLE);
793 POSTING_READ(WRPLL_CTL2);
794 }
795 break;
796 }
797
798 WARN(plls->spll_refcount < 0, "Invalid SPLL refcount\n");
799 WARN(plls->wrpll1_refcount < 0, "Invalid WRPLL1 refcount\n");
800 WARN(plls->wrpll2_refcount < 0, "Invalid WRPLL2 refcount\n");
801
802 intel_crtc->ddi_pll_sel = PORT_CLK_SEL_NONE;
803 }
804
intel_ddi_calculate_wrpll(int clock,int * p,int * n2,int * r2)805 static void intel_ddi_calculate_wrpll(int clock, int *p, int *n2, int *r2)
806 {
807 u32 i;
808
809 for (i = 0; i < ARRAY_SIZE(wrpll_tmds_clock_table); i++)
810 if (clock <= wrpll_tmds_clock_table[i].clock)
811 break;
812
813 if (i == ARRAY_SIZE(wrpll_tmds_clock_table))
814 i--;
815
816 *p = wrpll_tmds_clock_table[i].p;
817 *n2 = wrpll_tmds_clock_table[i].n2;
818 *r2 = wrpll_tmds_clock_table[i].r2;
819
820 if (wrpll_tmds_clock_table[i].clock != clock)
821 DRM_INFO("WRPLL: using settings for %dKHz on %dKHz mode\n",
822 wrpll_tmds_clock_table[i].clock, clock);
823
824 DRM_DEBUG_KMS("WRPLL: %dKHz refresh rate with p=%d, n2=%d r2=%d\n",
825 clock, *p, *n2, *r2);
826 }
827
intel_ddi_pll_mode_set(struct drm_crtc * crtc,int clock)828 bool intel_ddi_pll_mode_set(struct drm_crtc *crtc, int clock)
829 {
830 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
831 struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
832 struct drm_encoder *encoder = &intel_encoder->base;
833 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
834 struct intel_ddi_plls *plls = &dev_priv->ddi_plls;
835 int type = intel_encoder->type;
836 enum pipe pipe = intel_crtc->pipe;
837 uint32_t reg, val;
838
839 /* TODO: reuse PLLs when possible (compare values) */
840
841 intel_ddi_put_crtc_pll(crtc);
842
843 if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
844 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
845
846 switch (intel_dp->link_bw) {
847 case DP_LINK_BW_1_62:
848 intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_810;
849 break;
850 case DP_LINK_BW_2_7:
851 intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_1350;
852 break;
853 case DP_LINK_BW_5_4:
854 intel_crtc->ddi_pll_sel = PORT_CLK_SEL_LCPLL_2700;
855 break;
856 default:
857 DRM_ERROR("Link bandwidth %d unsupported\n",
858 intel_dp->link_bw);
859 return false;
860 }
861
862 /* We don't need to turn any PLL on because we'll use LCPLL. */
863 return true;
864
865 } else if (type == INTEL_OUTPUT_HDMI) {
866 int p, n2, r2;
867
868 if (plls->wrpll1_refcount == 0) {
869 DRM_DEBUG_KMS("Using WRPLL 1 on pipe %c\n",
870 pipe_name(pipe));
871 plls->wrpll1_refcount++;
872 reg = WRPLL_CTL1;
873 intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL1;
874 } else if (plls->wrpll2_refcount == 0) {
875 DRM_DEBUG_KMS("Using WRPLL 2 on pipe %c\n",
876 pipe_name(pipe));
877 plls->wrpll2_refcount++;
878 reg = WRPLL_CTL2;
879 intel_crtc->ddi_pll_sel = PORT_CLK_SEL_WRPLL2;
880 } else {
881 DRM_ERROR("No WRPLLs available!\n");
882 return false;
883 }
884
885 WARN(I915_READ(reg) & WRPLL_PLL_ENABLE,
886 "WRPLL already enabled\n");
887
888 intel_ddi_calculate_wrpll(clock, &p, &n2, &r2);
889
890 val = WRPLL_PLL_ENABLE | WRPLL_PLL_SELECT_LCPLL_2700 |
891 WRPLL_DIVIDER_REFERENCE(r2) | WRPLL_DIVIDER_FEEDBACK(n2) |
892 WRPLL_DIVIDER_POST(p);
893
894 } else if (type == INTEL_OUTPUT_ANALOG) {
895 if (plls->spll_refcount == 0) {
896 DRM_DEBUG_KMS("Using SPLL on pipe %c\n",
897 pipe_name(pipe));
898 plls->spll_refcount++;
899 reg = SPLL_CTL;
900 intel_crtc->ddi_pll_sel = PORT_CLK_SEL_SPLL;
901 } else {
902 DRM_ERROR("SPLL already in use\n");
903 return false;
904 }
905
906 WARN(I915_READ(reg) & SPLL_PLL_ENABLE,
907 "SPLL already enabled\n");
908
909 val = SPLL_PLL_ENABLE | SPLL_PLL_FREQ_1350MHz | SPLL_PLL_SSC;
910
911 } else {
912 WARN(1, "Invalid DDI encoder type %d\n", type);
913 return false;
914 }
915
916 I915_WRITE(reg, val);
917 udelay(20);
918
919 return true;
920 }
921
intel_ddi_set_pipe_settings(struct drm_crtc * crtc)922 void intel_ddi_set_pipe_settings(struct drm_crtc *crtc)
923 {
924 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
925 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
926 struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
927 enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
928 int type = intel_encoder->type;
929 uint32_t temp;
930
931 if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
932
933 temp = TRANS_MSA_SYNC_CLK;
934 switch (intel_crtc->config.pipe_bpp) {
935 case 18:
936 temp |= TRANS_MSA_6_BPC;
937 break;
938 case 24:
939 temp |= TRANS_MSA_8_BPC;
940 break;
941 case 30:
942 temp |= TRANS_MSA_10_BPC;
943 break;
944 case 36:
945 temp |= TRANS_MSA_12_BPC;
946 break;
947 default:
948 BUG();
949 }
950 I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp);
951 }
952 }
953
intel_ddi_enable_transcoder_func(struct drm_crtc * crtc)954 void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
955 {
956 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
957 struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
958 struct drm_encoder *encoder = &intel_encoder->base;
959 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
960 enum pipe pipe = intel_crtc->pipe;
961 enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
962 enum port port = intel_ddi_get_encoder_port(intel_encoder);
963 int type = intel_encoder->type;
964 uint32_t temp;
965
966 /* Enable TRANS_DDI_FUNC_CTL for the pipe to work in HDMI mode */
967 temp = TRANS_DDI_FUNC_ENABLE;
968 temp |= TRANS_DDI_SELECT_PORT(port);
969
970 switch (intel_crtc->config.pipe_bpp) {
971 case 18:
972 temp |= TRANS_DDI_BPC_6;
973 break;
974 case 24:
975 temp |= TRANS_DDI_BPC_8;
976 break;
977 case 30:
978 temp |= TRANS_DDI_BPC_10;
979 break;
980 case 36:
981 temp |= TRANS_DDI_BPC_12;
982 break;
983 default:
984 BUG();
985 }
986
987 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
988 temp |= TRANS_DDI_PVSYNC;
989 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
990 temp |= TRANS_DDI_PHSYNC;
991
992 if (cpu_transcoder == TRANSCODER_EDP) {
993 switch (pipe) {
994 case PIPE_A:
995 /* Can only use the always-on power well for eDP when
996 * not using the panel fitter, and when not using motion
997 * blur mitigation (which we don't support). */
998 if (dev_priv->pch_pf_size)
999 temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
1000 else
1001 temp |= TRANS_DDI_EDP_INPUT_A_ON;
1002 break;
1003 case PIPE_B:
1004 temp |= TRANS_DDI_EDP_INPUT_B_ONOFF;
1005 break;
1006 case PIPE_C:
1007 temp |= TRANS_DDI_EDP_INPUT_C_ONOFF;
1008 break;
1009 default:
1010 BUG();
1011 break;
1012 }
1013 }
1014
1015 if (type == INTEL_OUTPUT_HDMI) {
1016 struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
1017
1018 if (intel_hdmi->has_hdmi_sink)
1019 temp |= TRANS_DDI_MODE_SELECT_HDMI;
1020 else
1021 temp |= TRANS_DDI_MODE_SELECT_DVI;
1022
1023 } else if (type == INTEL_OUTPUT_ANALOG) {
1024 temp |= TRANS_DDI_MODE_SELECT_FDI;
1025 temp |= (intel_crtc->fdi_lanes - 1) << 1;
1026
1027 } else if (type == INTEL_OUTPUT_DISPLAYPORT ||
1028 type == INTEL_OUTPUT_EDP) {
1029 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1030
1031 temp |= TRANS_DDI_MODE_SELECT_DP_SST;
1032
1033 switch (intel_dp->lane_count) {
1034 case 1:
1035 temp |= TRANS_DDI_PORT_WIDTH_X1;
1036 break;
1037 case 2:
1038 temp |= TRANS_DDI_PORT_WIDTH_X2;
1039 break;
1040 case 4:
1041 temp |= TRANS_DDI_PORT_WIDTH_X4;
1042 break;
1043 default:
1044 temp |= TRANS_DDI_PORT_WIDTH_X4;
1045 WARN(1, "Unsupported lane count %d\n",
1046 intel_dp->lane_count);
1047 }
1048
1049 } else {
1050 WARN(1, "Invalid encoder type %d for pipe %d\n",
1051 intel_encoder->type, pipe);
1052 }
1053
1054 I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
1055 }
1056
intel_ddi_disable_transcoder_func(struct drm_i915_private * dev_priv,enum transcoder cpu_transcoder)1057 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
1058 enum transcoder cpu_transcoder)
1059 {
1060 uint32_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
1061 uint32_t val = I915_READ(reg);
1062
1063 val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK);
1064 val |= TRANS_DDI_PORT_NONE;
1065 I915_WRITE(reg, val);
1066 }
1067
intel_ddi_connector_get_hw_state(struct intel_connector * intel_connector)1068 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector)
1069 {
1070 struct drm_device *dev = intel_connector->base.dev;
1071 struct drm_i915_private *dev_priv = dev->dev_private;
1072 struct intel_encoder *intel_encoder = intel_connector->encoder;
1073 int type = intel_connector->base.connector_type;
1074 enum port port = intel_ddi_get_encoder_port(intel_encoder);
1075 enum pipe pipe = 0;
1076 enum transcoder cpu_transcoder;
1077 uint32_t tmp;
1078
1079 if (!intel_encoder->get_hw_state(intel_encoder, &pipe))
1080 return false;
1081
1082 if (port == PORT_A)
1083 cpu_transcoder = TRANSCODER_EDP;
1084 else
1085 cpu_transcoder = (enum transcoder) pipe;
1086
1087 tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1088
1089 switch (tmp & TRANS_DDI_MODE_SELECT_MASK) {
1090 case TRANS_DDI_MODE_SELECT_HDMI:
1091 case TRANS_DDI_MODE_SELECT_DVI:
1092 return (type == DRM_MODE_CONNECTOR_HDMIA);
1093
1094 case TRANS_DDI_MODE_SELECT_DP_SST:
1095 if (type == DRM_MODE_CONNECTOR_eDP)
1096 return true;
1097 case TRANS_DDI_MODE_SELECT_DP_MST:
1098 return (type == DRM_MODE_CONNECTOR_DisplayPort);
1099
1100 case TRANS_DDI_MODE_SELECT_FDI:
1101 return (type == DRM_MODE_CONNECTOR_VGA);
1102
1103 default:
1104 return false;
1105 }
1106 }
1107
intel_ddi_get_hw_state(struct intel_encoder * encoder,enum pipe * pipe)1108 bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
1109 enum pipe *pipe)
1110 {
1111 struct drm_device *dev = encoder->base.dev;
1112 struct drm_i915_private *dev_priv = dev->dev_private;
1113 enum port port = intel_ddi_get_encoder_port(encoder);
1114 u32 tmp;
1115 int i;
1116
1117 tmp = I915_READ(DDI_BUF_CTL(port));
1118
1119 if (!(tmp & DDI_BUF_CTL_ENABLE))
1120 return false;
1121
1122 if (port == PORT_A) {
1123 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
1124
1125 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
1126 case TRANS_DDI_EDP_INPUT_A_ON:
1127 case TRANS_DDI_EDP_INPUT_A_ONOFF:
1128 *pipe = PIPE_A;
1129 break;
1130 case TRANS_DDI_EDP_INPUT_B_ONOFF:
1131 *pipe = PIPE_B;
1132 break;
1133 case TRANS_DDI_EDP_INPUT_C_ONOFF:
1134 *pipe = PIPE_C;
1135 break;
1136 }
1137
1138 return true;
1139 } else {
1140 for (i = TRANSCODER_A; i <= TRANSCODER_C; i++) {
1141 tmp = I915_READ(TRANS_DDI_FUNC_CTL(i));
1142
1143 if ((tmp & TRANS_DDI_PORT_MASK)
1144 == TRANS_DDI_SELECT_PORT(port)) {
1145 *pipe = i;
1146 return true;
1147 }
1148 }
1149 }
1150
1151 DRM_DEBUG_KMS("No pipe for ddi port %i found\n", port);
1152
1153 return false;
1154 }
1155
intel_ddi_get_crtc_pll(struct drm_i915_private * dev_priv,enum pipe pipe)1156 static uint32_t intel_ddi_get_crtc_pll(struct drm_i915_private *dev_priv,
1157 enum pipe pipe)
1158 {
1159 uint32_t temp, ret;
1160 enum port port = I915_MAX_PORTS;
1161 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1162 pipe);
1163 int i;
1164
1165 if (cpu_transcoder == TRANSCODER_EDP) {
1166 port = PORT_A;
1167 } else {
1168 temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
1169 temp &= TRANS_DDI_PORT_MASK;
1170
1171 for (i = PORT_B; i <= PORT_E; i++)
1172 if (temp == TRANS_DDI_SELECT_PORT(i))
1173 port = i;
1174 }
1175
1176 if (port == I915_MAX_PORTS) {
1177 WARN(1, "Pipe %c enabled on an unknown port\n",
1178 pipe_name(pipe));
1179 ret = PORT_CLK_SEL_NONE;
1180 } else {
1181 ret = I915_READ(PORT_CLK_SEL(port));
1182 DRM_DEBUG_KMS("Pipe %c connected to port %c using clock "
1183 "0x%08x\n", pipe_name(pipe), port_name(port),
1184 ret);
1185 }
1186
1187 return ret;
1188 }
1189
intel_ddi_setup_hw_pll_state(struct drm_device * dev)1190 void intel_ddi_setup_hw_pll_state(struct drm_device *dev)
1191 {
1192 struct drm_i915_private *dev_priv = dev->dev_private;
1193 enum pipe pipe;
1194 struct intel_crtc *intel_crtc;
1195
1196 for_each_pipe(pipe) {
1197 intel_crtc =
1198 to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
1199
1200 if (!intel_crtc->active)
1201 continue;
1202
1203 intel_crtc->ddi_pll_sel = intel_ddi_get_crtc_pll(dev_priv,
1204 pipe);
1205
1206 switch (intel_crtc->ddi_pll_sel) {
1207 case PORT_CLK_SEL_SPLL:
1208 dev_priv->ddi_plls.spll_refcount++;
1209 break;
1210 case PORT_CLK_SEL_WRPLL1:
1211 dev_priv->ddi_plls.wrpll1_refcount++;
1212 break;
1213 case PORT_CLK_SEL_WRPLL2:
1214 dev_priv->ddi_plls.wrpll2_refcount++;
1215 break;
1216 }
1217 }
1218 }
1219
intel_ddi_enable_pipe_clock(struct intel_crtc * intel_crtc)1220 void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc)
1221 {
1222 struct drm_crtc *crtc = &intel_crtc->base;
1223 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
1224 struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
1225 enum port port = intel_ddi_get_encoder_port(intel_encoder);
1226 enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
1227
1228 if (cpu_transcoder != TRANSCODER_EDP)
1229 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
1230 TRANS_CLK_SEL_PORT(port));
1231 }
1232
intel_ddi_disable_pipe_clock(struct intel_crtc * intel_crtc)1233 void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc)
1234 {
1235 struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
1236 enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
1237
1238 if (cpu_transcoder != TRANSCODER_EDP)
1239 I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
1240 TRANS_CLK_SEL_DISABLED);
1241 }
1242
intel_ddi_pre_enable(struct intel_encoder * intel_encoder)1243 static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
1244 {
1245 struct drm_encoder *encoder = &intel_encoder->base;
1246 struct drm_crtc *crtc = encoder->crtc;
1247 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
1248 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1249 enum port port = intel_ddi_get_encoder_port(intel_encoder);
1250 int type = intel_encoder->type;
1251
1252 if (type == INTEL_OUTPUT_EDP) {
1253 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1254 ironlake_edp_panel_vdd_on(intel_dp);
1255 ironlake_edp_panel_on(intel_dp);
1256 ironlake_edp_panel_vdd_off(intel_dp, true);
1257 }
1258
1259 WARN_ON(intel_crtc->ddi_pll_sel == PORT_CLK_SEL_NONE);
1260 I915_WRITE(PORT_CLK_SEL(port), intel_crtc->ddi_pll_sel);
1261
1262 if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
1263 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1264
1265 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
1266 intel_dp_start_link_train(intel_dp);
1267 intel_dp_complete_link_train(intel_dp);
1268 if (port != PORT_A)
1269 intel_dp_stop_link_train(intel_dp);
1270 }
1271 }
1272
intel_ddi_post_disable(struct intel_encoder * intel_encoder)1273 static void intel_ddi_post_disable(struct intel_encoder *intel_encoder)
1274 {
1275 struct drm_encoder *encoder = &intel_encoder->base;
1276 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
1277 enum port port = intel_ddi_get_encoder_port(intel_encoder);
1278 int type = intel_encoder->type;
1279 uint32_t val;
1280 bool wait = false;
1281
1282 val = I915_READ(DDI_BUF_CTL(port));
1283 if (val & DDI_BUF_CTL_ENABLE) {
1284 val &= ~DDI_BUF_CTL_ENABLE;
1285 I915_WRITE(DDI_BUF_CTL(port), val);
1286 wait = true;
1287 }
1288
1289 val = I915_READ(DP_TP_CTL(port));
1290 val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
1291 val |= DP_TP_CTL_LINK_TRAIN_PAT1;
1292 I915_WRITE(DP_TP_CTL(port), val);
1293
1294 if (wait)
1295 intel_wait_ddi_buf_idle(dev_priv, port);
1296
1297 if (type == INTEL_OUTPUT_EDP) {
1298 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1299 ironlake_edp_panel_vdd_on(intel_dp);
1300 ironlake_edp_panel_off(intel_dp);
1301 }
1302
1303 I915_WRITE(PORT_CLK_SEL(port), PORT_CLK_SEL_NONE);
1304 }
1305
intel_enable_ddi(struct intel_encoder * intel_encoder)1306 static void intel_enable_ddi(struct intel_encoder *intel_encoder)
1307 {
1308 struct drm_encoder *encoder = &intel_encoder->base;
1309 struct drm_crtc *crtc = encoder->crtc;
1310 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1311 int pipe = intel_crtc->pipe;
1312 struct drm_device *dev = encoder->dev;
1313 struct drm_i915_private *dev_priv = dev->dev_private;
1314 enum port port = intel_ddi_get_encoder_port(intel_encoder);
1315 int type = intel_encoder->type;
1316 uint32_t tmp;
1317
1318 if (type == INTEL_OUTPUT_HDMI) {
1319 struct intel_digital_port *intel_dig_port =
1320 enc_to_dig_port(encoder);
1321
1322 /* In HDMI/DVI mode, the port width, and swing/emphasis values
1323 * are ignored so nothing special needs to be done besides
1324 * enabling the port.
1325 */
1326 I915_WRITE(DDI_BUF_CTL(port),
1327 intel_dig_port->port_reversal | DDI_BUF_CTL_ENABLE);
1328 } else if (type == INTEL_OUTPUT_EDP) {
1329 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1330
1331 if (port == PORT_A)
1332 intel_dp_stop_link_train(intel_dp);
1333
1334 ironlake_edp_backlight_on(intel_dp);
1335 }
1336
1337 if (intel_crtc->eld_vld) {
1338 tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
1339 tmp |= ((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) << (pipe * 4));
1340 I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp);
1341 }
1342 }
1343
intel_disable_ddi(struct intel_encoder * intel_encoder)1344 static void intel_disable_ddi(struct intel_encoder *intel_encoder)
1345 {
1346 struct drm_encoder *encoder = &intel_encoder->base;
1347 struct drm_crtc *crtc = encoder->crtc;
1348 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1349 int pipe = intel_crtc->pipe;
1350 int type = intel_encoder->type;
1351 struct drm_device *dev = encoder->dev;
1352 struct drm_i915_private *dev_priv = dev->dev_private;
1353 uint32_t tmp;
1354
1355 tmp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
1356 tmp &= ~((AUDIO_OUTPUT_ENABLE_A | AUDIO_ELD_VALID_A) << (pipe * 4));
1357 I915_WRITE(HSW_AUD_PIN_ELD_CP_VLD, tmp);
1358
1359 if (type == INTEL_OUTPUT_EDP) {
1360 struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
1361
1362 ironlake_edp_backlight_off(intel_dp);
1363 }
1364 }
1365
intel_ddi_get_cdclk_freq(struct drm_i915_private * dev_priv)1366 int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv)
1367 {
1368 if (I915_READ(HSW_FUSE_STRAP) & HSW_CDCLK_LIMIT)
1369 return 450;
1370 else if ((I915_READ(LCPLL_CTL) & LCPLL_CLK_FREQ_MASK) ==
1371 LCPLL_CLK_FREQ_450)
1372 return 450;
1373 else if (IS_ULT(dev_priv->dev))
1374 return 338;
1375 else
1376 return 540;
1377 }
1378
intel_ddi_pll_init(struct drm_device * dev)1379 void intel_ddi_pll_init(struct drm_device *dev)
1380 {
1381 struct drm_i915_private *dev_priv = dev->dev_private;
1382 uint32_t val = I915_READ(LCPLL_CTL);
1383
1384 /* The LCPLL register should be turned on by the BIOS. For now let's
1385 * just check its state and print errors in case something is wrong.
1386 * Don't even try to turn it on.
1387 */
1388
1389 DRM_DEBUG_KMS("CDCLK running at %dMHz\n",
1390 intel_ddi_get_cdclk_freq(dev_priv));
1391
1392 if (val & LCPLL_CD_SOURCE_FCLK)
1393 DRM_ERROR("CDCLK source is not LCPLL\n");
1394
1395 if (val & LCPLL_PLL_DISABLE)
1396 DRM_ERROR("LCPLL is disabled\n");
1397 }
1398
intel_ddi_prepare_link_retrain(struct drm_encoder * encoder)1399 void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder)
1400 {
1401 struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
1402 struct intel_dp *intel_dp = &intel_dig_port->dp;
1403 struct drm_i915_private *dev_priv = encoder->dev->dev_private;
1404 enum port port = intel_dig_port->port;
1405 uint32_t val;
1406 bool wait = false;
1407
1408 if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) {
1409 val = I915_READ(DDI_BUF_CTL(port));
1410 if (val & DDI_BUF_CTL_ENABLE) {
1411 val &= ~DDI_BUF_CTL_ENABLE;
1412 I915_WRITE(DDI_BUF_CTL(port), val);
1413 wait = true;
1414 }
1415
1416 val = I915_READ(DP_TP_CTL(port));
1417 val &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
1418 val |= DP_TP_CTL_LINK_TRAIN_PAT1;
1419 I915_WRITE(DP_TP_CTL(port), val);
1420 POSTING_READ(DP_TP_CTL(port));
1421
1422 if (wait)
1423 intel_wait_ddi_buf_idle(dev_priv, port);
1424 }
1425
1426 val = DP_TP_CTL_ENABLE | DP_TP_CTL_MODE_SST |
1427 DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE;
1428 if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN)
1429 val |= DP_TP_CTL_ENHANCED_FRAME_ENABLE;
1430 I915_WRITE(DP_TP_CTL(port), val);
1431 POSTING_READ(DP_TP_CTL(port));
1432
1433 intel_dp->DP |= DDI_BUF_CTL_ENABLE;
1434 I915_WRITE(DDI_BUF_CTL(port), intel_dp->DP);
1435 POSTING_READ(DDI_BUF_CTL(port));
1436
1437 udelay(600);
1438 }
1439
intel_ddi_fdi_disable(struct drm_crtc * crtc)1440 void intel_ddi_fdi_disable(struct drm_crtc *crtc)
1441 {
1442 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
1443 struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
1444 uint32_t val;
1445
1446 intel_ddi_post_disable(intel_encoder);
1447
1448 val = I915_READ(_FDI_RXA_CTL);
1449 val &= ~FDI_RX_ENABLE;
1450 I915_WRITE(_FDI_RXA_CTL, val);
1451
1452 val = I915_READ(_FDI_RXA_MISC);
1453 val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
1454 val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
1455 I915_WRITE(_FDI_RXA_MISC, val);
1456
1457 val = I915_READ(_FDI_RXA_CTL);
1458 val &= ~FDI_PCDCLK;
1459 I915_WRITE(_FDI_RXA_CTL, val);
1460
1461 val = I915_READ(_FDI_RXA_CTL);
1462 val &= ~FDI_RX_PLL_ENABLE;
1463 I915_WRITE(_FDI_RXA_CTL, val);
1464 }
1465
intel_ddi_hot_plug(struct intel_encoder * intel_encoder)1466 static void intel_ddi_hot_plug(struct intel_encoder *intel_encoder)
1467 {
1468 struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base);
1469 int type = intel_encoder->type;
1470
1471 if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP)
1472 intel_dp_check_link_status(intel_dp);
1473 }
1474
intel_ddi_destroy(struct drm_encoder * encoder)1475 static void intel_ddi_destroy(struct drm_encoder *encoder)
1476 {
1477 /* HDMI has nothing special to destroy, so we can go with this. */
1478 intel_dp_encoder_destroy(encoder);
1479 }
1480
intel_ddi_compute_config(struct intel_encoder * encoder,struct intel_crtc_config * pipe_config)1481 static bool intel_ddi_compute_config(struct intel_encoder *encoder,
1482 struct intel_crtc_config *pipe_config)
1483 {
1484 int type = encoder->type;
1485
1486 WARN(type == INTEL_OUTPUT_UNKNOWN, "compute_config() on unknown output!\n");
1487
1488 if (type == INTEL_OUTPUT_HDMI)
1489 return intel_hdmi_compute_config(encoder, pipe_config);
1490 else
1491 return intel_dp_compute_config(encoder, pipe_config);
1492 }
1493
1494 static const struct drm_encoder_funcs intel_ddi_funcs = {
1495 .destroy = intel_ddi_destroy,
1496 };
1497
1498 static const struct drm_encoder_helper_funcs intel_ddi_helper_funcs = {
1499 .mode_set = intel_ddi_mode_set,
1500 };
1501
intel_ddi_init(struct drm_device * dev,enum port port)1502 void intel_ddi_init(struct drm_device *dev, enum port port)
1503 {
1504 struct drm_i915_private *dev_priv = dev->dev_private;
1505 struct intel_digital_port *intel_dig_port;
1506 struct intel_encoder *intel_encoder;
1507 struct drm_encoder *encoder;
1508 struct intel_connector *hdmi_connector = NULL;
1509 struct intel_connector *dp_connector = NULL;
1510
1511 intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL);
1512 if (!intel_dig_port)
1513 return;
1514
1515 dp_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
1516 if (!dp_connector) {
1517 kfree(intel_dig_port);
1518 return;
1519 }
1520
1521 if (port != PORT_A) {
1522 hdmi_connector = kzalloc(sizeof(struct intel_connector),
1523 GFP_KERNEL);
1524 if (!hdmi_connector) {
1525 kfree(dp_connector);
1526 kfree(intel_dig_port);
1527 return;
1528 }
1529 }
1530
1531 intel_encoder = &intel_dig_port->base;
1532 encoder = &intel_encoder->base;
1533
1534 drm_encoder_init(dev, encoder, &intel_ddi_funcs,
1535 DRM_MODE_ENCODER_TMDS);
1536 drm_encoder_helper_add(encoder, &intel_ddi_helper_funcs);
1537
1538 intel_encoder->compute_config = intel_ddi_compute_config;
1539 intel_encoder->enable = intel_enable_ddi;
1540 intel_encoder->pre_enable = intel_ddi_pre_enable;
1541 intel_encoder->disable = intel_disable_ddi;
1542 intel_encoder->post_disable = intel_ddi_post_disable;
1543 intel_encoder->get_hw_state = intel_ddi_get_hw_state;
1544
1545 intel_dig_port->port = port;
1546 intel_dig_port->port_reversal = I915_READ(DDI_BUF_CTL(port)) &
1547 DDI_BUF_PORT_REVERSAL;
1548 if (hdmi_connector)
1549 intel_dig_port->hdmi.hdmi_reg = DDI_BUF_CTL(port);
1550 intel_dig_port->dp.output_reg = DDI_BUF_CTL(port);
1551
1552 intel_encoder->type = INTEL_OUTPUT_UNKNOWN;
1553 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
1554 intel_encoder->cloneable = false;
1555 intel_encoder->hot_plug = intel_ddi_hot_plug;
1556
1557 if (hdmi_connector)
1558 intel_hdmi_init_connector(intel_dig_port, hdmi_connector);
1559 intel_dp_init_connector(intel_dig_port, dp_connector);
1560 }
1561