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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 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 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
29 | #include "drmP.h" | |
30 | #include "drm.h" | |
31 | #include "drm_crtc.h" | |
32 | #include "drm_crtc_helper.h" | |
33 | #include "intel_drv.h" | |
34 | #include "i915_drm.h" | |
35 | #include "i915_drv.h" | |
ab2c0672 | 36 | #include "drm_dp_helper.h" |
a4fc5ed6 | 37 | |
ae266c98 | 38 | |
a4fc5ed6 KP |
39 | #define DP_LINK_STATUS_SIZE 6 |
40 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) | |
41 | ||
42 | #define DP_LINK_CONFIGURATION_SIZE 9 | |
43 | ||
32f9d658 ZW |
44 | #define IS_eDP(i) ((i)->type == INTEL_OUTPUT_EDP) |
45 | ||
a4fc5ed6 KP |
46 | struct intel_dp_priv { |
47 | uint32_t output_reg; | |
48 | uint32_t DP; | |
49 | uint8_t link_configuration[DP_LINK_CONFIGURATION_SIZE]; | |
a4fc5ed6 | 50 | bool has_audio; |
c8110e52 | 51 | int dpms_mode; |
a4fc5ed6 KP |
52 | uint8_t link_bw; |
53 | uint8_t lane_count; | |
54 | uint8_t dpcd[4]; | |
21d40d37 | 55 | struct intel_encoder *intel_encoder; |
a4fc5ed6 KP |
56 | struct i2c_adapter adapter; |
57 | struct i2c_algo_dp_aux_data algo; | |
58 | }; | |
59 | ||
60 | static void | |
21d40d37 | 61 | intel_dp_link_train(struct intel_encoder *intel_encoder, uint32_t DP, |
a4fc5ed6 KP |
62 | uint8_t link_configuration[DP_LINK_CONFIGURATION_SIZE]); |
63 | ||
64 | static void | |
21d40d37 | 65 | intel_dp_link_down(struct intel_encoder *intel_encoder, uint32_t DP); |
a4fc5ed6 | 66 | |
32f9d658 | 67 | void |
21d40d37 | 68 | intel_edp_link_config (struct intel_encoder *intel_encoder, |
32f9d658 ZW |
69 | int *lane_num, int *link_bw) |
70 | { | |
21d40d37 | 71 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
32f9d658 ZW |
72 | |
73 | *lane_num = dp_priv->lane_count; | |
74 | if (dp_priv->link_bw == DP_LINK_BW_1_62) | |
75 | *link_bw = 162000; | |
76 | else if (dp_priv->link_bw == DP_LINK_BW_2_7) | |
77 | *link_bw = 270000; | |
78 | } | |
79 | ||
a4fc5ed6 | 80 | static int |
21d40d37 | 81 | intel_dp_max_lane_count(struct intel_encoder *intel_encoder) |
a4fc5ed6 | 82 | { |
21d40d37 | 83 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 KP |
84 | int max_lane_count = 4; |
85 | ||
86 | if (dp_priv->dpcd[0] >= 0x11) { | |
87 | max_lane_count = dp_priv->dpcd[2] & 0x1f; | |
88 | switch (max_lane_count) { | |
89 | case 1: case 2: case 4: | |
90 | break; | |
91 | default: | |
92 | max_lane_count = 4; | |
93 | } | |
94 | } | |
95 | return max_lane_count; | |
96 | } | |
97 | ||
98 | static int | |
21d40d37 | 99 | intel_dp_max_link_bw(struct intel_encoder *intel_encoder) |
a4fc5ed6 | 100 | { |
21d40d37 | 101 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 KP |
102 | int max_link_bw = dp_priv->dpcd[1]; |
103 | ||
104 | switch (max_link_bw) { | |
105 | case DP_LINK_BW_1_62: | |
106 | case DP_LINK_BW_2_7: | |
107 | break; | |
108 | default: | |
109 | max_link_bw = DP_LINK_BW_1_62; | |
110 | break; | |
111 | } | |
112 | return max_link_bw; | |
113 | } | |
114 | ||
115 | static int | |
116 | intel_dp_link_clock(uint8_t link_bw) | |
117 | { | |
118 | if (link_bw == DP_LINK_BW_2_7) | |
119 | return 270000; | |
120 | else | |
121 | return 162000; | |
122 | } | |
123 | ||
124 | /* I think this is a fiction */ | |
125 | static int | |
885a5fb5 | 126 | intel_dp_link_required(struct drm_device *dev, |
21d40d37 | 127 | struct intel_encoder *intel_encoder, int pixel_clock) |
a4fc5ed6 | 128 | { |
885a5fb5 ZW |
129 | struct drm_i915_private *dev_priv = dev->dev_private; |
130 | ||
21d40d37 | 131 | if (IS_eDP(intel_encoder)) |
885a5fb5 ZW |
132 | return (pixel_clock * dev_priv->edp_bpp) / 8; |
133 | else | |
134 | return pixel_clock * 3; | |
a4fc5ed6 KP |
135 | } |
136 | ||
137 | static int | |
138 | intel_dp_mode_valid(struct drm_connector *connector, | |
139 | struct drm_display_mode *mode) | |
140 | { | |
21d40d37 EA |
141 | struct intel_encoder *intel_encoder = to_intel_encoder(connector); |
142 | int max_link_clock = intel_dp_link_clock(intel_dp_max_link_bw(intel_encoder)); | |
143 | int max_lanes = intel_dp_max_lane_count(intel_encoder); | |
a4fc5ed6 | 144 | |
21d40d37 | 145 | if (intel_dp_link_required(connector->dev, intel_encoder, mode->clock) |
885a5fb5 | 146 | > max_link_clock * max_lanes) |
a4fc5ed6 KP |
147 | return MODE_CLOCK_HIGH; |
148 | ||
149 | if (mode->clock < 10000) | |
150 | return MODE_CLOCK_LOW; | |
151 | ||
152 | return MODE_OK; | |
153 | } | |
154 | ||
155 | static uint32_t | |
156 | pack_aux(uint8_t *src, int src_bytes) | |
157 | { | |
158 | int i; | |
159 | uint32_t v = 0; | |
160 | ||
161 | if (src_bytes > 4) | |
162 | src_bytes = 4; | |
163 | for (i = 0; i < src_bytes; i++) | |
164 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
165 | return v; | |
166 | } | |
167 | ||
168 | static void | |
169 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
170 | { | |
171 | int i; | |
172 | if (dst_bytes > 4) | |
173 | dst_bytes = 4; | |
174 | for (i = 0; i < dst_bytes; i++) | |
175 | dst[i] = src >> ((3-i) * 8); | |
176 | } | |
177 | ||
fb0f8fbf KP |
178 | /* hrawclock is 1/4 the FSB frequency */ |
179 | static int | |
180 | intel_hrawclk(struct drm_device *dev) | |
181 | { | |
182 | struct drm_i915_private *dev_priv = dev->dev_private; | |
183 | uint32_t clkcfg; | |
184 | ||
185 | clkcfg = I915_READ(CLKCFG); | |
186 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
187 | case CLKCFG_FSB_400: | |
188 | return 100; | |
189 | case CLKCFG_FSB_533: | |
190 | return 133; | |
191 | case CLKCFG_FSB_667: | |
192 | return 166; | |
193 | case CLKCFG_FSB_800: | |
194 | return 200; | |
195 | case CLKCFG_FSB_1067: | |
196 | return 266; | |
197 | case CLKCFG_FSB_1333: | |
198 | return 333; | |
199 | /* these two are just a guess; one of them might be right */ | |
200 | case CLKCFG_FSB_1600: | |
201 | case CLKCFG_FSB_1600_ALT: | |
202 | return 400; | |
203 | default: | |
204 | return 133; | |
205 | } | |
206 | } | |
207 | ||
a4fc5ed6 | 208 | static int |
21d40d37 | 209 | intel_dp_aux_ch(struct intel_encoder *intel_encoder, |
a4fc5ed6 KP |
210 | uint8_t *send, int send_bytes, |
211 | uint8_t *recv, int recv_size) | |
212 | { | |
21d40d37 | 213 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 | 214 | uint32_t output_reg = dp_priv->output_reg; |
21d40d37 | 215 | struct drm_device *dev = intel_encoder->base.dev; |
a4fc5ed6 KP |
216 | struct drm_i915_private *dev_priv = dev->dev_private; |
217 | uint32_t ch_ctl = output_reg + 0x10; | |
218 | uint32_t ch_data = ch_ctl + 4; | |
219 | int i; | |
220 | int recv_bytes; | |
221 | uint32_t ctl; | |
222 | uint32_t status; | |
fb0f8fbf | 223 | uint32_t aux_clock_divider; |
e3421a18 | 224 | int try, precharge; |
a4fc5ed6 KP |
225 | |
226 | /* The clock divider is based off the hrawclk, | |
fb0f8fbf KP |
227 | * and would like to run at 2MHz. So, take the |
228 | * hrawclk value and divide by 2 and use that | |
a4fc5ed6 | 229 | */ |
e3421a18 ZW |
230 | if (IS_eDP(intel_encoder)) { |
231 | if (IS_GEN6(dev)) | |
232 | aux_clock_divider = 200; /* SNB eDP input clock at 400Mhz */ | |
233 | else | |
234 | aux_clock_divider = 225; /* eDP input clock at 450Mhz */ | |
235 | } else if (HAS_PCH_SPLIT(dev)) | |
f2b115e6 | 236 | aux_clock_divider = 62; /* IRL input clock fixed at 125Mhz */ |
5eb08b69 ZW |
237 | else |
238 | aux_clock_divider = intel_hrawclk(dev) / 2; | |
239 | ||
e3421a18 ZW |
240 | if (IS_GEN6(dev)) |
241 | precharge = 3; | |
242 | else | |
243 | precharge = 5; | |
244 | ||
fb0f8fbf KP |
245 | /* Must try at least 3 times according to DP spec */ |
246 | for (try = 0; try < 5; try++) { | |
247 | /* Load the send data into the aux channel data registers */ | |
248 | for (i = 0; i < send_bytes; i += 4) { | |
a419aef8 | 249 | uint32_t d = pack_aux(send + i, send_bytes - i); |
fb0f8fbf KP |
250 | |
251 | I915_WRITE(ch_data + i, d); | |
252 | } | |
253 | ||
254 | ctl = (DP_AUX_CH_CTL_SEND_BUSY | | |
255 | DP_AUX_CH_CTL_TIME_OUT_400us | | |
256 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
e3421a18 | 257 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | |
fb0f8fbf KP |
258 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | |
259 | DP_AUX_CH_CTL_DONE | | |
260 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
261 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
262 | ||
263 | /* Send the command and wait for it to complete */ | |
264 | I915_WRITE(ch_ctl, ctl); | |
265 | (void) I915_READ(ch_ctl); | |
266 | for (;;) { | |
267 | udelay(100); | |
268 | status = I915_READ(ch_ctl); | |
269 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) | |
270 | break; | |
271 | } | |
272 | ||
273 | /* Clear done status and any errors */ | |
eebc863e | 274 | I915_WRITE(ch_ctl, (status | |
fb0f8fbf KP |
275 | DP_AUX_CH_CTL_DONE | |
276 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
277 | DP_AUX_CH_CTL_RECEIVE_ERROR)); | |
278 | (void) I915_READ(ch_ctl); | |
279 | if ((status & DP_AUX_CH_CTL_TIME_OUT_ERROR) == 0) | |
a4fc5ed6 KP |
280 | break; |
281 | } | |
282 | ||
a4fc5ed6 | 283 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 284 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
a5b3da54 | 285 | return -EBUSY; |
a4fc5ed6 KP |
286 | } |
287 | ||
288 | /* Check for timeout or receive error. | |
289 | * Timeouts occur when the sink is not connected | |
290 | */ | |
a5b3da54 | 291 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 292 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
a5b3da54 KP |
293 | return -EIO; |
294 | } | |
1ae8c0a5 KP |
295 | |
296 | /* Timeouts occur when the device isn't connected, so they're | |
297 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 298 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 299 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
a5b3da54 | 300 | return -ETIMEDOUT; |
a4fc5ed6 KP |
301 | } |
302 | ||
303 | /* Unload any bytes sent back from the other side */ | |
304 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
305 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
306 | ||
307 | if (recv_bytes > recv_size) | |
308 | recv_bytes = recv_size; | |
309 | ||
310 | for (i = 0; i < recv_bytes; i += 4) { | |
311 | uint32_t d = I915_READ(ch_data + i); | |
312 | ||
313 | unpack_aux(d, recv + i, recv_bytes - i); | |
314 | } | |
315 | ||
316 | return recv_bytes; | |
317 | } | |
318 | ||
319 | /* Write data to the aux channel in native mode */ | |
320 | static int | |
21d40d37 | 321 | intel_dp_aux_native_write(struct intel_encoder *intel_encoder, |
a4fc5ed6 KP |
322 | uint16_t address, uint8_t *send, int send_bytes) |
323 | { | |
324 | int ret; | |
325 | uint8_t msg[20]; | |
326 | int msg_bytes; | |
327 | uint8_t ack; | |
328 | ||
329 | if (send_bytes > 16) | |
330 | return -1; | |
331 | msg[0] = AUX_NATIVE_WRITE << 4; | |
332 | msg[1] = address >> 8; | |
eebc863e | 333 | msg[2] = address & 0xff; |
a4fc5ed6 KP |
334 | msg[3] = send_bytes - 1; |
335 | memcpy(&msg[4], send, send_bytes); | |
336 | msg_bytes = send_bytes + 4; | |
337 | for (;;) { | |
21d40d37 | 338 | ret = intel_dp_aux_ch(intel_encoder, msg, msg_bytes, &ack, 1); |
a4fc5ed6 KP |
339 | if (ret < 0) |
340 | return ret; | |
341 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) | |
342 | break; | |
343 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
344 | udelay(100); | |
345 | else | |
a5b3da54 | 346 | return -EIO; |
a4fc5ed6 KP |
347 | } |
348 | return send_bytes; | |
349 | } | |
350 | ||
351 | /* Write a single byte to the aux channel in native mode */ | |
352 | static int | |
21d40d37 | 353 | intel_dp_aux_native_write_1(struct intel_encoder *intel_encoder, |
a4fc5ed6 KP |
354 | uint16_t address, uint8_t byte) |
355 | { | |
21d40d37 | 356 | return intel_dp_aux_native_write(intel_encoder, address, &byte, 1); |
a4fc5ed6 KP |
357 | } |
358 | ||
359 | /* read bytes from a native aux channel */ | |
360 | static int | |
21d40d37 | 361 | intel_dp_aux_native_read(struct intel_encoder *intel_encoder, |
a4fc5ed6 KP |
362 | uint16_t address, uint8_t *recv, int recv_bytes) |
363 | { | |
364 | uint8_t msg[4]; | |
365 | int msg_bytes; | |
366 | uint8_t reply[20]; | |
367 | int reply_bytes; | |
368 | uint8_t ack; | |
369 | int ret; | |
370 | ||
371 | msg[0] = AUX_NATIVE_READ << 4; | |
372 | msg[1] = address >> 8; | |
373 | msg[2] = address & 0xff; | |
374 | msg[3] = recv_bytes - 1; | |
375 | ||
376 | msg_bytes = 4; | |
377 | reply_bytes = recv_bytes + 1; | |
378 | ||
379 | for (;;) { | |
21d40d37 | 380 | ret = intel_dp_aux_ch(intel_encoder, msg, msg_bytes, |
a4fc5ed6 | 381 | reply, reply_bytes); |
a5b3da54 KP |
382 | if (ret == 0) |
383 | return -EPROTO; | |
384 | if (ret < 0) | |
a4fc5ed6 KP |
385 | return ret; |
386 | ack = reply[0]; | |
387 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) { | |
388 | memcpy(recv, reply + 1, ret - 1); | |
389 | return ret - 1; | |
390 | } | |
391 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
392 | udelay(100); | |
393 | else | |
a5b3da54 | 394 | return -EIO; |
a4fc5ed6 KP |
395 | } |
396 | } | |
397 | ||
398 | static int | |
ab2c0672 DA |
399 | intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, |
400 | uint8_t write_byte, uint8_t *read_byte) | |
a4fc5ed6 | 401 | { |
ab2c0672 | 402 | struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data; |
a4fc5ed6 KP |
403 | struct intel_dp_priv *dp_priv = container_of(adapter, |
404 | struct intel_dp_priv, | |
405 | adapter); | |
21d40d37 | 406 | struct intel_encoder *intel_encoder = dp_priv->intel_encoder; |
ab2c0672 DA |
407 | uint16_t address = algo_data->address; |
408 | uint8_t msg[5]; | |
409 | uint8_t reply[2]; | |
410 | int msg_bytes; | |
411 | int reply_bytes; | |
412 | int ret; | |
413 | ||
414 | /* Set up the command byte */ | |
415 | if (mode & MODE_I2C_READ) | |
416 | msg[0] = AUX_I2C_READ << 4; | |
417 | else | |
418 | msg[0] = AUX_I2C_WRITE << 4; | |
419 | ||
420 | if (!(mode & MODE_I2C_STOP)) | |
421 | msg[0] |= AUX_I2C_MOT << 4; | |
a4fc5ed6 | 422 | |
ab2c0672 DA |
423 | msg[1] = address >> 8; |
424 | msg[2] = address; | |
425 | ||
426 | switch (mode) { | |
427 | case MODE_I2C_WRITE: | |
428 | msg[3] = 0; | |
429 | msg[4] = write_byte; | |
430 | msg_bytes = 5; | |
431 | reply_bytes = 1; | |
432 | break; | |
433 | case MODE_I2C_READ: | |
434 | msg[3] = 0; | |
435 | msg_bytes = 4; | |
436 | reply_bytes = 2; | |
437 | break; | |
438 | default: | |
439 | msg_bytes = 3; | |
440 | reply_bytes = 1; | |
441 | break; | |
442 | } | |
443 | ||
444 | for (;;) { | |
21d40d37 | 445 | ret = intel_dp_aux_ch(intel_encoder, |
ab2c0672 DA |
446 | msg, msg_bytes, |
447 | reply, reply_bytes); | |
448 | if (ret < 0) { | |
3ff99164 | 449 | DRM_DEBUG_KMS("aux_ch failed %d\n", ret); |
ab2c0672 DA |
450 | return ret; |
451 | } | |
452 | switch (reply[0] & AUX_I2C_REPLY_MASK) { | |
453 | case AUX_I2C_REPLY_ACK: | |
454 | if (mode == MODE_I2C_READ) { | |
455 | *read_byte = reply[1]; | |
456 | } | |
457 | return reply_bytes - 1; | |
458 | case AUX_I2C_REPLY_NACK: | |
3ff99164 | 459 | DRM_DEBUG_KMS("aux_ch nack\n"); |
ab2c0672 DA |
460 | return -EREMOTEIO; |
461 | case AUX_I2C_REPLY_DEFER: | |
3ff99164 | 462 | DRM_DEBUG_KMS("aux_ch defer\n"); |
ab2c0672 DA |
463 | udelay(100); |
464 | break; | |
465 | default: | |
466 | DRM_ERROR("aux_ch invalid reply 0x%02x\n", reply[0]); | |
467 | return -EREMOTEIO; | |
468 | } | |
469 | } | |
a4fc5ed6 KP |
470 | } |
471 | ||
472 | static int | |
21d40d37 | 473 | intel_dp_i2c_init(struct intel_encoder *intel_encoder, const char *name) |
a4fc5ed6 | 474 | { |
21d40d37 | 475 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 | 476 | |
d54e9d28 | 477 | DRM_DEBUG_KMS("i2c_init %s\n", name); |
a4fc5ed6 KP |
478 | dp_priv->algo.running = false; |
479 | dp_priv->algo.address = 0; | |
480 | dp_priv->algo.aux_ch = intel_dp_i2c_aux_ch; | |
481 | ||
482 | memset(&dp_priv->adapter, '\0', sizeof (dp_priv->adapter)); | |
483 | dp_priv->adapter.owner = THIS_MODULE; | |
484 | dp_priv->adapter.class = I2C_CLASS_DDC; | |
eebc863e ZW |
485 | strncpy (dp_priv->adapter.name, name, sizeof(dp_priv->adapter.name) - 1); |
486 | dp_priv->adapter.name[sizeof(dp_priv->adapter.name) - 1] = '\0'; | |
a4fc5ed6 | 487 | dp_priv->adapter.algo_data = &dp_priv->algo; |
21d40d37 | 488 | dp_priv->adapter.dev.parent = &intel_encoder->base.kdev; |
a4fc5ed6 KP |
489 | |
490 | return i2c_dp_aux_add_bus(&dp_priv->adapter); | |
491 | } | |
492 | ||
493 | static bool | |
494 | intel_dp_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode, | |
495 | struct drm_display_mode *adjusted_mode) | |
496 | { | |
21d40d37 EA |
497 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); |
498 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; | |
a4fc5ed6 | 499 | int lane_count, clock; |
21d40d37 EA |
500 | int max_lane_count = intel_dp_max_lane_count(intel_encoder); |
501 | int max_clock = intel_dp_max_link_bw(intel_encoder) == DP_LINK_BW_2_7 ? 1 : 0; | |
a4fc5ed6 KP |
502 | static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; |
503 | ||
504 | for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) { | |
505 | for (clock = 0; clock <= max_clock; clock++) { | |
506 | int link_avail = intel_dp_link_clock(bws[clock]) * lane_count; | |
507 | ||
21d40d37 | 508 | if (intel_dp_link_required(encoder->dev, intel_encoder, mode->clock) |
885a5fb5 | 509 | <= link_avail) { |
a4fc5ed6 KP |
510 | dp_priv->link_bw = bws[clock]; |
511 | dp_priv->lane_count = lane_count; | |
512 | adjusted_mode->clock = intel_dp_link_clock(dp_priv->link_bw); | |
28c97730 ZY |
513 | DRM_DEBUG_KMS("Display port link bw %02x lane " |
514 | "count %d clock %d\n", | |
a4fc5ed6 KP |
515 | dp_priv->link_bw, dp_priv->lane_count, |
516 | adjusted_mode->clock); | |
517 | return true; | |
518 | } | |
519 | } | |
520 | } | |
521 | return false; | |
522 | } | |
523 | ||
524 | struct intel_dp_m_n { | |
525 | uint32_t tu; | |
526 | uint32_t gmch_m; | |
527 | uint32_t gmch_n; | |
528 | uint32_t link_m; | |
529 | uint32_t link_n; | |
530 | }; | |
531 | ||
532 | static void | |
533 | intel_reduce_ratio(uint32_t *num, uint32_t *den) | |
534 | { | |
535 | while (*num > 0xffffff || *den > 0xffffff) { | |
536 | *num >>= 1; | |
537 | *den >>= 1; | |
538 | } | |
539 | } | |
540 | ||
541 | static void | |
542 | intel_dp_compute_m_n(int bytes_per_pixel, | |
543 | int nlanes, | |
544 | int pixel_clock, | |
545 | int link_clock, | |
546 | struct intel_dp_m_n *m_n) | |
547 | { | |
548 | m_n->tu = 64; | |
549 | m_n->gmch_m = pixel_clock * bytes_per_pixel; | |
550 | m_n->gmch_n = link_clock * nlanes; | |
551 | intel_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n); | |
552 | m_n->link_m = pixel_clock; | |
553 | m_n->link_n = link_clock; | |
554 | intel_reduce_ratio(&m_n->link_m, &m_n->link_n); | |
555 | } | |
556 | ||
557 | void | |
558 | intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, | |
559 | struct drm_display_mode *adjusted_mode) | |
560 | { | |
561 | struct drm_device *dev = crtc->dev; | |
562 | struct drm_mode_config *mode_config = &dev->mode_config; | |
563 | struct drm_connector *connector; | |
564 | struct drm_i915_private *dev_priv = dev->dev_private; | |
565 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
566 | int lane_count = 4; | |
567 | struct intel_dp_m_n m_n; | |
568 | ||
569 | /* | |
21d40d37 | 570 | * Find the lane count in the intel_encoder private |
a4fc5ed6 KP |
571 | */ |
572 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
21d40d37 EA |
573 | struct intel_encoder *intel_encoder = to_intel_encoder(connector); |
574 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; | |
a4fc5ed6 KP |
575 | |
576 | if (!connector->encoder || connector->encoder->crtc != crtc) | |
577 | continue; | |
578 | ||
21d40d37 | 579 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) { |
a4fc5ed6 KP |
580 | lane_count = dp_priv->lane_count; |
581 | break; | |
582 | } | |
583 | } | |
584 | ||
585 | /* | |
586 | * Compute the GMCH and Link ratios. The '3' here is | |
587 | * the number of bytes_per_pixel post-LUT, which we always | |
588 | * set up for 8-bits of R/G/B, or 3 bytes total. | |
589 | */ | |
590 | intel_dp_compute_m_n(3, lane_count, | |
591 | mode->clock, adjusted_mode->clock, &m_n); | |
592 | ||
c619eed4 | 593 | if (HAS_PCH_SPLIT(dev)) { |
5eb08b69 ZW |
594 | if (intel_crtc->pipe == 0) { |
595 | I915_WRITE(TRANSA_DATA_M1, | |
596 | ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) | | |
597 | m_n.gmch_m); | |
598 | I915_WRITE(TRANSA_DATA_N1, m_n.gmch_n); | |
599 | I915_WRITE(TRANSA_DP_LINK_M1, m_n.link_m); | |
600 | I915_WRITE(TRANSA_DP_LINK_N1, m_n.link_n); | |
601 | } else { | |
602 | I915_WRITE(TRANSB_DATA_M1, | |
603 | ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) | | |
604 | m_n.gmch_m); | |
605 | I915_WRITE(TRANSB_DATA_N1, m_n.gmch_n); | |
606 | I915_WRITE(TRANSB_DP_LINK_M1, m_n.link_m); | |
607 | I915_WRITE(TRANSB_DP_LINK_N1, m_n.link_n); | |
608 | } | |
a4fc5ed6 | 609 | } else { |
5eb08b69 ZW |
610 | if (intel_crtc->pipe == 0) { |
611 | I915_WRITE(PIPEA_GMCH_DATA_M, | |
612 | ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) | | |
613 | m_n.gmch_m); | |
614 | I915_WRITE(PIPEA_GMCH_DATA_N, | |
615 | m_n.gmch_n); | |
616 | I915_WRITE(PIPEA_DP_LINK_M, m_n.link_m); | |
617 | I915_WRITE(PIPEA_DP_LINK_N, m_n.link_n); | |
618 | } else { | |
619 | I915_WRITE(PIPEB_GMCH_DATA_M, | |
620 | ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) | | |
621 | m_n.gmch_m); | |
622 | I915_WRITE(PIPEB_GMCH_DATA_N, | |
623 | m_n.gmch_n); | |
624 | I915_WRITE(PIPEB_DP_LINK_M, m_n.link_m); | |
625 | I915_WRITE(PIPEB_DP_LINK_N, m_n.link_n); | |
626 | } | |
a4fc5ed6 KP |
627 | } |
628 | } | |
629 | ||
630 | static void | |
631 | intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, | |
632 | struct drm_display_mode *adjusted_mode) | |
633 | { | |
e3421a18 | 634 | struct drm_device *dev = encoder->dev; |
21d40d37 EA |
635 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); |
636 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; | |
637 | struct drm_crtc *crtc = intel_encoder->enc.crtc; | |
a4fc5ed6 KP |
638 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
639 | ||
e3421a18 | 640 | dp_priv->DP = (DP_VOLTAGE_0_4 | |
9c9e7927 AJ |
641 | DP_PRE_EMPHASIS_0); |
642 | ||
643 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
644 | dp_priv->DP |= DP_SYNC_HS_HIGH; | |
645 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
646 | dp_priv->DP |= DP_SYNC_VS_HIGH; | |
a4fc5ed6 | 647 | |
e3421a18 ZW |
648 | if (HAS_PCH_CPT(dev) && !IS_eDP(intel_encoder)) |
649 | dp_priv->DP |= DP_LINK_TRAIN_OFF_CPT; | |
650 | else | |
651 | dp_priv->DP |= DP_LINK_TRAIN_OFF; | |
652 | ||
a4fc5ed6 KP |
653 | switch (dp_priv->lane_count) { |
654 | case 1: | |
655 | dp_priv->DP |= DP_PORT_WIDTH_1; | |
656 | break; | |
657 | case 2: | |
658 | dp_priv->DP |= DP_PORT_WIDTH_2; | |
659 | break; | |
660 | case 4: | |
661 | dp_priv->DP |= DP_PORT_WIDTH_4; | |
662 | break; | |
663 | } | |
664 | if (dp_priv->has_audio) | |
665 | dp_priv->DP |= DP_AUDIO_OUTPUT_ENABLE; | |
666 | ||
667 | memset(dp_priv->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); | |
668 | dp_priv->link_configuration[0] = dp_priv->link_bw; | |
669 | dp_priv->link_configuration[1] = dp_priv->lane_count; | |
670 | ||
671 | /* | |
672 | * Check for DPCD version > 1.1, | |
673 | * enable enahanced frame stuff in that case | |
674 | */ | |
675 | if (dp_priv->dpcd[0] >= 0x11) { | |
676 | dp_priv->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
677 | dp_priv->DP |= DP_ENHANCED_FRAMING; | |
678 | } | |
679 | ||
e3421a18 ZW |
680 | /* CPT DP's pipe select is decided in TRANS_DP_CTL */ |
681 | if (intel_crtc->pipe == 1 && !HAS_PCH_CPT(dev)) | |
a4fc5ed6 | 682 | dp_priv->DP |= DP_PIPEB_SELECT; |
32f9d658 | 683 | |
21d40d37 | 684 | if (IS_eDP(intel_encoder)) { |
32f9d658 ZW |
685 | /* don't miss out required setting for eDP */ |
686 | dp_priv->DP |= DP_PLL_ENABLE; | |
687 | if (adjusted_mode->clock < 200000) | |
688 | dp_priv->DP |= DP_PLL_FREQ_160MHZ; | |
689 | else | |
690 | dp_priv->DP |= DP_PLL_FREQ_270MHZ; | |
691 | } | |
a4fc5ed6 KP |
692 | } |
693 | ||
f2b115e6 | 694 | static void ironlake_edp_backlight_on (struct drm_device *dev) |
32f9d658 ZW |
695 | { |
696 | struct drm_i915_private *dev_priv = dev->dev_private; | |
697 | u32 pp; | |
698 | ||
28c97730 | 699 | DRM_DEBUG_KMS("\n"); |
32f9d658 ZW |
700 | pp = I915_READ(PCH_PP_CONTROL); |
701 | pp |= EDP_BLC_ENABLE; | |
702 | I915_WRITE(PCH_PP_CONTROL, pp); | |
703 | } | |
704 | ||
f2b115e6 | 705 | static void ironlake_edp_backlight_off (struct drm_device *dev) |
32f9d658 ZW |
706 | { |
707 | struct drm_i915_private *dev_priv = dev->dev_private; | |
708 | u32 pp; | |
709 | ||
28c97730 | 710 | DRM_DEBUG_KMS("\n"); |
32f9d658 ZW |
711 | pp = I915_READ(PCH_PP_CONTROL); |
712 | pp &= ~EDP_BLC_ENABLE; | |
713 | I915_WRITE(PCH_PP_CONTROL, pp); | |
714 | } | |
a4fc5ed6 KP |
715 | |
716 | static void | |
717 | intel_dp_dpms(struct drm_encoder *encoder, int mode) | |
718 | { | |
21d40d37 EA |
719 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); |
720 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; | |
721 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 KP |
722 | struct drm_i915_private *dev_priv = dev->dev_private; |
723 | uint32_t dp_reg = I915_READ(dp_priv->output_reg); | |
724 | ||
725 | if (mode != DRM_MODE_DPMS_ON) { | |
32f9d658 | 726 | if (dp_reg & DP_PORT_EN) { |
21d40d37 EA |
727 | intel_dp_link_down(intel_encoder, dp_priv->DP); |
728 | if (IS_eDP(intel_encoder)) | |
f2b115e6 | 729 | ironlake_edp_backlight_off(dev); |
32f9d658 | 730 | } |
a4fc5ed6 | 731 | } else { |
32f9d658 | 732 | if (!(dp_reg & DP_PORT_EN)) { |
21d40d37 EA |
733 | intel_dp_link_train(intel_encoder, dp_priv->DP, dp_priv->link_configuration); |
734 | if (IS_eDP(intel_encoder)) | |
f2b115e6 | 735 | ironlake_edp_backlight_on(dev); |
32f9d658 | 736 | } |
a4fc5ed6 | 737 | } |
c8110e52 | 738 | dp_priv->dpms_mode = mode; |
a4fc5ed6 KP |
739 | } |
740 | ||
741 | /* | |
742 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
743 | * link status information | |
744 | */ | |
745 | static bool | |
21d40d37 | 746 | intel_dp_get_link_status(struct intel_encoder *intel_encoder, |
a4fc5ed6 KP |
747 | uint8_t link_status[DP_LINK_STATUS_SIZE]) |
748 | { | |
749 | int ret; | |
750 | ||
21d40d37 | 751 | ret = intel_dp_aux_native_read(intel_encoder, |
a4fc5ed6 KP |
752 | DP_LANE0_1_STATUS, |
753 | link_status, DP_LINK_STATUS_SIZE); | |
754 | if (ret != DP_LINK_STATUS_SIZE) | |
755 | return false; | |
756 | return true; | |
757 | } | |
758 | ||
759 | static uint8_t | |
760 | intel_dp_link_status(uint8_t link_status[DP_LINK_STATUS_SIZE], | |
761 | int r) | |
762 | { | |
763 | return link_status[r - DP_LANE0_1_STATUS]; | |
764 | } | |
765 | ||
a4fc5ed6 KP |
766 | static uint8_t |
767 | intel_get_adjust_request_voltage(uint8_t link_status[DP_LINK_STATUS_SIZE], | |
768 | int lane) | |
769 | { | |
770 | int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); | |
771 | int s = ((lane & 1) ? | |
772 | DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : | |
773 | DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT); | |
774 | uint8_t l = intel_dp_link_status(link_status, i); | |
775 | ||
776 | return ((l >> s) & 3) << DP_TRAIN_VOLTAGE_SWING_SHIFT; | |
777 | } | |
778 | ||
779 | static uint8_t | |
780 | intel_get_adjust_request_pre_emphasis(uint8_t link_status[DP_LINK_STATUS_SIZE], | |
781 | int lane) | |
782 | { | |
783 | int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1); | |
784 | int s = ((lane & 1) ? | |
785 | DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT : | |
786 | DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT); | |
787 | uint8_t l = intel_dp_link_status(link_status, i); | |
788 | ||
789 | return ((l >> s) & 3) << DP_TRAIN_PRE_EMPHASIS_SHIFT; | |
790 | } | |
791 | ||
792 | ||
793 | #if 0 | |
794 | static char *voltage_names[] = { | |
795 | "0.4V", "0.6V", "0.8V", "1.2V" | |
796 | }; | |
797 | static char *pre_emph_names[] = { | |
798 | "0dB", "3.5dB", "6dB", "9.5dB" | |
799 | }; | |
800 | static char *link_train_names[] = { | |
801 | "pattern 1", "pattern 2", "idle", "off" | |
802 | }; | |
803 | #endif | |
804 | ||
805 | /* | |
806 | * These are source-specific values; current Intel hardware supports | |
807 | * a maximum voltage of 800mV and a maximum pre-emphasis of 6dB | |
808 | */ | |
809 | #define I830_DP_VOLTAGE_MAX DP_TRAIN_VOLTAGE_SWING_800 | |
810 | ||
811 | static uint8_t | |
812 | intel_dp_pre_emphasis_max(uint8_t voltage_swing) | |
813 | { | |
814 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
815 | case DP_TRAIN_VOLTAGE_SWING_400: | |
816 | return DP_TRAIN_PRE_EMPHASIS_6; | |
817 | case DP_TRAIN_VOLTAGE_SWING_600: | |
818 | return DP_TRAIN_PRE_EMPHASIS_6; | |
819 | case DP_TRAIN_VOLTAGE_SWING_800: | |
820 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
821 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
822 | default: | |
823 | return DP_TRAIN_PRE_EMPHASIS_0; | |
824 | } | |
825 | } | |
826 | ||
827 | static void | |
21d40d37 | 828 | intel_get_adjust_train(struct intel_encoder *intel_encoder, |
a4fc5ed6 KP |
829 | uint8_t link_status[DP_LINK_STATUS_SIZE], |
830 | int lane_count, | |
831 | uint8_t train_set[4]) | |
832 | { | |
833 | uint8_t v = 0; | |
834 | uint8_t p = 0; | |
835 | int lane; | |
836 | ||
837 | for (lane = 0; lane < lane_count; lane++) { | |
838 | uint8_t this_v = intel_get_adjust_request_voltage(link_status, lane); | |
839 | uint8_t this_p = intel_get_adjust_request_pre_emphasis(link_status, lane); | |
840 | ||
841 | if (this_v > v) | |
842 | v = this_v; | |
843 | if (this_p > p) | |
844 | p = this_p; | |
845 | } | |
846 | ||
847 | if (v >= I830_DP_VOLTAGE_MAX) | |
848 | v = I830_DP_VOLTAGE_MAX | DP_TRAIN_MAX_SWING_REACHED; | |
849 | ||
850 | if (p >= intel_dp_pre_emphasis_max(v)) | |
851 | p = intel_dp_pre_emphasis_max(v) | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
852 | ||
853 | for (lane = 0; lane < 4; lane++) | |
854 | train_set[lane] = v | p; | |
855 | } | |
856 | ||
857 | static uint32_t | |
858 | intel_dp_signal_levels(uint8_t train_set, int lane_count) | |
859 | { | |
860 | uint32_t signal_levels = 0; | |
861 | ||
862 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
863 | case DP_TRAIN_VOLTAGE_SWING_400: | |
864 | default: | |
865 | signal_levels |= DP_VOLTAGE_0_4; | |
866 | break; | |
867 | case DP_TRAIN_VOLTAGE_SWING_600: | |
868 | signal_levels |= DP_VOLTAGE_0_6; | |
869 | break; | |
870 | case DP_TRAIN_VOLTAGE_SWING_800: | |
871 | signal_levels |= DP_VOLTAGE_0_8; | |
872 | break; | |
873 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
874 | signal_levels |= DP_VOLTAGE_1_2; | |
875 | break; | |
876 | } | |
877 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
878 | case DP_TRAIN_PRE_EMPHASIS_0: | |
879 | default: | |
880 | signal_levels |= DP_PRE_EMPHASIS_0; | |
881 | break; | |
882 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
883 | signal_levels |= DP_PRE_EMPHASIS_3_5; | |
884 | break; | |
885 | case DP_TRAIN_PRE_EMPHASIS_6: | |
886 | signal_levels |= DP_PRE_EMPHASIS_6; | |
887 | break; | |
888 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
889 | signal_levels |= DP_PRE_EMPHASIS_9_5; | |
890 | break; | |
891 | } | |
892 | return signal_levels; | |
893 | } | |
894 | ||
e3421a18 ZW |
895 | /* Gen6's DP voltage swing and pre-emphasis control */ |
896 | static uint32_t | |
897 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
898 | { | |
899 | switch (train_set & (DP_TRAIN_VOLTAGE_SWING_MASK|DP_TRAIN_PRE_EMPHASIS_MASK)) { | |
900 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
901 | return EDP_LINK_TRAIN_400MV_0DB_SNB_B; | |
902 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
903 | return EDP_LINK_TRAIN_400MV_6DB_SNB_B; | |
904 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
905 | return EDP_LINK_TRAIN_600MV_3_5DB_SNB_B; | |
906 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: | |
907 | return EDP_LINK_TRAIN_800MV_0DB_SNB_B; | |
908 | default: | |
909 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level\n"); | |
910 | return EDP_LINK_TRAIN_400MV_0DB_SNB_B; | |
911 | } | |
912 | } | |
913 | ||
a4fc5ed6 KP |
914 | static uint8_t |
915 | intel_get_lane_status(uint8_t link_status[DP_LINK_STATUS_SIZE], | |
916 | int lane) | |
917 | { | |
918 | int i = DP_LANE0_1_STATUS + (lane >> 1); | |
919 | int s = (lane & 1) * 4; | |
920 | uint8_t l = intel_dp_link_status(link_status, i); | |
921 | ||
922 | return (l >> s) & 0xf; | |
923 | } | |
924 | ||
925 | /* Check for clock recovery is done on all channels */ | |
926 | static bool | |
927 | intel_clock_recovery_ok(uint8_t link_status[DP_LINK_STATUS_SIZE], int lane_count) | |
928 | { | |
929 | int lane; | |
930 | uint8_t lane_status; | |
931 | ||
932 | for (lane = 0; lane < lane_count; lane++) { | |
933 | lane_status = intel_get_lane_status(link_status, lane); | |
934 | if ((lane_status & DP_LANE_CR_DONE) == 0) | |
935 | return false; | |
936 | } | |
937 | return true; | |
938 | } | |
939 | ||
940 | /* Check to see if channel eq is done on all channels */ | |
941 | #define CHANNEL_EQ_BITS (DP_LANE_CR_DONE|\ | |
942 | DP_LANE_CHANNEL_EQ_DONE|\ | |
943 | DP_LANE_SYMBOL_LOCKED) | |
944 | static bool | |
945 | intel_channel_eq_ok(uint8_t link_status[DP_LINK_STATUS_SIZE], int lane_count) | |
946 | { | |
947 | uint8_t lane_align; | |
948 | uint8_t lane_status; | |
949 | int lane; | |
950 | ||
951 | lane_align = intel_dp_link_status(link_status, | |
952 | DP_LANE_ALIGN_STATUS_UPDATED); | |
953 | if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0) | |
954 | return false; | |
955 | for (lane = 0; lane < lane_count; lane++) { | |
956 | lane_status = intel_get_lane_status(link_status, lane); | |
957 | if ((lane_status & CHANNEL_EQ_BITS) != CHANNEL_EQ_BITS) | |
958 | return false; | |
959 | } | |
960 | return true; | |
961 | } | |
962 | ||
963 | static bool | |
21d40d37 | 964 | intel_dp_set_link_train(struct intel_encoder *intel_encoder, |
a4fc5ed6 KP |
965 | uint32_t dp_reg_value, |
966 | uint8_t dp_train_pat, | |
967 | uint8_t train_set[4], | |
968 | bool first) | |
969 | { | |
21d40d37 | 970 | struct drm_device *dev = intel_encoder->base.dev; |
a4fc5ed6 | 971 | struct drm_i915_private *dev_priv = dev->dev_private; |
21d40d37 | 972 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 KP |
973 | int ret; |
974 | ||
975 | I915_WRITE(dp_priv->output_reg, dp_reg_value); | |
976 | POSTING_READ(dp_priv->output_reg); | |
977 | if (first) | |
978 | intel_wait_for_vblank(dev); | |
979 | ||
21d40d37 | 980 | intel_dp_aux_native_write_1(intel_encoder, |
a4fc5ed6 KP |
981 | DP_TRAINING_PATTERN_SET, |
982 | dp_train_pat); | |
983 | ||
21d40d37 | 984 | ret = intel_dp_aux_native_write(intel_encoder, |
a4fc5ed6 KP |
985 | DP_TRAINING_LANE0_SET, train_set, 4); |
986 | if (ret != 4) | |
987 | return false; | |
988 | ||
989 | return true; | |
990 | } | |
991 | ||
992 | static void | |
21d40d37 | 993 | intel_dp_link_train(struct intel_encoder *intel_encoder, uint32_t DP, |
a4fc5ed6 KP |
994 | uint8_t link_configuration[DP_LINK_CONFIGURATION_SIZE]) |
995 | { | |
21d40d37 | 996 | struct drm_device *dev = intel_encoder->base.dev; |
a4fc5ed6 | 997 | struct drm_i915_private *dev_priv = dev->dev_private; |
21d40d37 | 998 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 KP |
999 | uint8_t train_set[4]; |
1000 | uint8_t link_status[DP_LINK_STATUS_SIZE]; | |
1001 | int i; | |
1002 | uint8_t voltage; | |
1003 | bool clock_recovery = false; | |
1004 | bool channel_eq = false; | |
1005 | bool first = true; | |
1006 | int tries; | |
e3421a18 | 1007 | u32 reg; |
a4fc5ed6 KP |
1008 | |
1009 | /* Write the link configuration data */ | |
ab00a9ef | 1010 | intel_dp_aux_native_write(intel_encoder, DP_LINK_BW_SET, |
a4fc5ed6 KP |
1011 | link_configuration, DP_LINK_CONFIGURATION_SIZE); |
1012 | ||
1013 | DP |= DP_PORT_EN; | |
e3421a18 ZW |
1014 | if (HAS_PCH_CPT(dev) && !IS_eDP(intel_encoder)) |
1015 | DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
1016 | else | |
1017 | DP &= ~DP_LINK_TRAIN_MASK; | |
a4fc5ed6 KP |
1018 | memset(train_set, 0, 4); |
1019 | voltage = 0xff; | |
1020 | tries = 0; | |
1021 | clock_recovery = false; | |
1022 | for (;;) { | |
1023 | /* Use train_set[0] to set the voltage and pre emphasis values */ | |
e3421a18 ZW |
1024 | uint32_t signal_levels; |
1025 | if (IS_GEN6(dev) && IS_eDP(intel_encoder)) { | |
1026 | signal_levels = intel_gen6_edp_signal_levels(train_set[0]); | |
1027 | DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels; | |
1028 | } else { | |
1029 | signal_levels = intel_dp_signal_levels(train_set[0], dp_priv->lane_count); | |
1030 | DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels; | |
1031 | } | |
a4fc5ed6 | 1032 | |
e3421a18 ZW |
1033 | if (HAS_PCH_CPT(dev) && !IS_eDP(intel_encoder)) |
1034 | reg = DP | DP_LINK_TRAIN_PAT_1_CPT; | |
1035 | else | |
1036 | reg = DP | DP_LINK_TRAIN_PAT_1; | |
1037 | ||
1038 | if (!intel_dp_set_link_train(intel_encoder, reg, | |
a4fc5ed6 KP |
1039 | DP_TRAINING_PATTERN_1, train_set, first)) |
1040 | break; | |
1041 | first = false; | |
1042 | /* Set training pattern 1 */ | |
1043 | ||
1044 | udelay(100); | |
21d40d37 | 1045 | if (!intel_dp_get_link_status(intel_encoder, link_status)) |
a4fc5ed6 KP |
1046 | break; |
1047 | ||
1048 | if (intel_clock_recovery_ok(link_status, dp_priv->lane_count)) { | |
1049 | clock_recovery = true; | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | /* Check to see if we've tried the max voltage */ | |
1054 | for (i = 0; i < dp_priv->lane_count; i++) | |
1055 | if ((train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
1056 | break; | |
1057 | if (i == dp_priv->lane_count) | |
1058 | break; | |
1059 | ||
1060 | /* Check to see if we've tried the same voltage 5 times */ | |
1061 | if ((train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { | |
1062 | ++tries; | |
1063 | if (tries == 5) | |
1064 | break; | |
1065 | } else | |
1066 | tries = 0; | |
1067 | voltage = train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
1068 | ||
1069 | /* Compute new train_set as requested by target */ | |
21d40d37 | 1070 | intel_get_adjust_train(intel_encoder, link_status, dp_priv->lane_count, train_set); |
a4fc5ed6 KP |
1071 | } |
1072 | ||
1073 | /* channel equalization */ | |
1074 | tries = 0; | |
1075 | channel_eq = false; | |
1076 | for (;;) { | |
1077 | /* Use train_set[0] to set the voltage and pre emphasis values */ | |
e3421a18 ZW |
1078 | uint32_t signal_levels; |
1079 | ||
1080 | if (IS_GEN6(dev) && IS_eDP(intel_encoder)) { | |
1081 | signal_levels = intel_gen6_edp_signal_levels(train_set[0]); | |
1082 | DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels; | |
1083 | } else { | |
1084 | signal_levels = intel_dp_signal_levels(train_set[0], dp_priv->lane_count); | |
1085 | DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels; | |
1086 | } | |
1087 | ||
1088 | if (HAS_PCH_CPT(dev) && !IS_eDP(intel_encoder)) | |
1089 | reg = DP | DP_LINK_TRAIN_PAT_2_CPT; | |
1090 | else | |
1091 | reg = DP | DP_LINK_TRAIN_PAT_2; | |
a4fc5ed6 KP |
1092 | |
1093 | /* channel eq pattern */ | |
e3421a18 | 1094 | if (!intel_dp_set_link_train(intel_encoder, reg, |
a4fc5ed6 KP |
1095 | DP_TRAINING_PATTERN_2, train_set, |
1096 | false)) | |
1097 | break; | |
1098 | ||
1099 | udelay(400); | |
21d40d37 | 1100 | if (!intel_dp_get_link_status(intel_encoder, link_status)) |
a4fc5ed6 KP |
1101 | break; |
1102 | ||
1103 | if (intel_channel_eq_ok(link_status, dp_priv->lane_count)) { | |
1104 | channel_eq = true; | |
1105 | break; | |
1106 | } | |
1107 | ||
1108 | /* Try 5 times */ | |
1109 | if (tries > 5) | |
1110 | break; | |
1111 | ||
1112 | /* Compute new train_set as requested by target */ | |
21d40d37 | 1113 | intel_get_adjust_train(intel_encoder, link_status, dp_priv->lane_count, train_set); |
a4fc5ed6 KP |
1114 | ++tries; |
1115 | } | |
1116 | ||
e3421a18 ZW |
1117 | if (HAS_PCH_CPT(dev) && !IS_eDP(intel_encoder)) |
1118 | reg = DP | DP_LINK_TRAIN_OFF_CPT; | |
1119 | else | |
1120 | reg = DP | DP_LINK_TRAIN_OFF; | |
1121 | ||
1122 | I915_WRITE(dp_priv->output_reg, reg); | |
a4fc5ed6 | 1123 | POSTING_READ(dp_priv->output_reg); |
21d40d37 | 1124 | intel_dp_aux_native_write_1(intel_encoder, |
a4fc5ed6 KP |
1125 | DP_TRAINING_PATTERN_SET, DP_TRAINING_PATTERN_DISABLE); |
1126 | } | |
1127 | ||
1128 | static void | |
21d40d37 | 1129 | intel_dp_link_down(struct intel_encoder *intel_encoder, uint32_t DP) |
a4fc5ed6 | 1130 | { |
21d40d37 | 1131 | struct drm_device *dev = intel_encoder->base.dev; |
a4fc5ed6 | 1132 | struct drm_i915_private *dev_priv = dev->dev_private; |
21d40d37 | 1133 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 | 1134 | |
28c97730 | 1135 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 1136 | |
21d40d37 | 1137 | if (IS_eDP(intel_encoder)) { |
32f9d658 ZW |
1138 | DP &= ~DP_PLL_ENABLE; |
1139 | I915_WRITE(dp_priv->output_reg, DP); | |
1140 | POSTING_READ(dp_priv->output_reg); | |
1141 | udelay(100); | |
1142 | } | |
1143 | ||
e3421a18 ZW |
1144 | if (HAS_PCH_CPT(dev) && !IS_eDP(intel_encoder)) { |
1145 | DP &= ~DP_LINK_TRAIN_MASK_CPT; | |
1146 | I915_WRITE(dp_priv->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); | |
1147 | POSTING_READ(dp_priv->output_reg); | |
1148 | } else { | |
1149 | DP &= ~DP_LINK_TRAIN_MASK; | |
1150 | I915_WRITE(dp_priv->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); | |
1151 | POSTING_READ(dp_priv->output_reg); | |
1152 | } | |
5eb08b69 ZW |
1153 | |
1154 | udelay(17000); | |
1155 | ||
21d40d37 | 1156 | if (IS_eDP(intel_encoder)) |
32f9d658 | 1157 | DP |= DP_LINK_TRAIN_OFF; |
a4fc5ed6 KP |
1158 | I915_WRITE(dp_priv->output_reg, DP & ~DP_PORT_EN); |
1159 | POSTING_READ(dp_priv->output_reg); | |
1160 | } | |
1161 | ||
a4fc5ed6 KP |
1162 | /* |
1163 | * According to DP spec | |
1164 | * 5.1.2: | |
1165 | * 1. Read DPCD | |
1166 | * 2. Configure link according to Receiver Capabilities | |
1167 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
1168 | * 4. Check link status on receipt of hot-plug interrupt | |
1169 | */ | |
1170 | ||
1171 | static void | |
21d40d37 | 1172 | intel_dp_check_link_status(struct intel_encoder *intel_encoder) |
a4fc5ed6 | 1173 | { |
21d40d37 | 1174 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 KP |
1175 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
1176 | ||
21d40d37 | 1177 | if (!intel_encoder->enc.crtc) |
a4fc5ed6 KP |
1178 | return; |
1179 | ||
21d40d37 EA |
1180 | if (!intel_dp_get_link_status(intel_encoder, link_status)) { |
1181 | intel_dp_link_down(intel_encoder, dp_priv->DP); | |
a4fc5ed6 KP |
1182 | return; |
1183 | } | |
1184 | ||
1185 | if (!intel_channel_eq_ok(link_status, dp_priv->lane_count)) | |
21d40d37 | 1186 | intel_dp_link_train(intel_encoder, dp_priv->DP, dp_priv->link_configuration); |
a4fc5ed6 | 1187 | } |
a4fc5ed6 | 1188 | |
5eb08b69 | 1189 | static enum drm_connector_status |
f2b115e6 | 1190 | ironlake_dp_detect(struct drm_connector *connector) |
5eb08b69 | 1191 | { |
21d40d37 EA |
1192 | struct intel_encoder *intel_encoder = to_intel_encoder(connector); |
1193 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; | |
5eb08b69 ZW |
1194 | enum drm_connector_status status; |
1195 | ||
1196 | status = connector_status_disconnected; | |
21d40d37 | 1197 | if (intel_dp_aux_native_read(intel_encoder, |
5eb08b69 ZW |
1198 | 0x000, dp_priv->dpcd, |
1199 | sizeof (dp_priv->dpcd)) == sizeof (dp_priv->dpcd)) | |
1200 | { | |
1201 | if (dp_priv->dpcd[0] != 0) | |
1202 | status = connector_status_connected; | |
1203 | } | |
1204 | return status; | |
1205 | } | |
1206 | ||
a4fc5ed6 KP |
1207 | /** |
1208 | * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect DP connection. | |
1209 | * | |
1210 | * \return true if DP port is connected. | |
1211 | * \return false if DP port is disconnected. | |
1212 | */ | |
1213 | static enum drm_connector_status | |
1214 | intel_dp_detect(struct drm_connector *connector) | |
1215 | { | |
21d40d37 EA |
1216 | struct intel_encoder *intel_encoder = to_intel_encoder(connector); |
1217 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 1218 | struct drm_i915_private *dev_priv = dev->dev_private; |
21d40d37 | 1219 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
a4fc5ed6 KP |
1220 | uint32_t temp, bit; |
1221 | enum drm_connector_status status; | |
1222 | ||
1223 | dp_priv->has_audio = false; | |
1224 | ||
c619eed4 | 1225 | if (HAS_PCH_SPLIT(dev)) |
f2b115e6 | 1226 | return ironlake_dp_detect(connector); |
5eb08b69 | 1227 | |
a4fc5ed6 KP |
1228 | temp = I915_READ(PORT_HOTPLUG_EN); |
1229 | ||
1230 | I915_WRITE(PORT_HOTPLUG_EN, | |
1231 | temp | | |
1232 | DPB_HOTPLUG_INT_EN | | |
1233 | DPC_HOTPLUG_INT_EN | | |
1234 | DPD_HOTPLUG_INT_EN); | |
1235 | ||
1236 | POSTING_READ(PORT_HOTPLUG_EN); | |
1237 | ||
1238 | switch (dp_priv->output_reg) { | |
1239 | case DP_B: | |
1240 | bit = DPB_HOTPLUG_INT_STATUS; | |
1241 | break; | |
1242 | case DP_C: | |
1243 | bit = DPC_HOTPLUG_INT_STATUS; | |
1244 | break; | |
1245 | case DP_D: | |
1246 | bit = DPD_HOTPLUG_INT_STATUS; | |
1247 | break; | |
1248 | default: | |
1249 | return connector_status_unknown; | |
1250 | } | |
1251 | ||
1252 | temp = I915_READ(PORT_HOTPLUG_STAT); | |
1253 | ||
1254 | if ((temp & bit) == 0) | |
1255 | return connector_status_disconnected; | |
1256 | ||
1257 | status = connector_status_disconnected; | |
21d40d37 | 1258 | if (intel_dp_aux_native_read(intel_encoder, |
a4fc5ed6 KP |
1259 | 0x000, dp_priv->dpcd, |
1260 | sizeof (dp_priv->dpcd)) == sizeof (dp_priv->dpcd)) | |
1261 | { | |
1262 | if (dp_priv->dpcd[0] != 0) | |
1263 | status = connector_status_connected; | |
1264 | } | |
1265 | return status; | |
1266 | } | |
1267 | ||
1268 | static int intel_dp_get_modes(struct drm_connector *connector) | |
1269 | { | |
21d40d37 EA |
1270 | struct intel_encoder *intel_encoder = to_intel_encoder(connector); |
1271 | struct drm_device *dev = intel_encoder->base.dev; | |
32f9d658 ZW |
1272 | struct drm_i915_private *dev_priv = dev->dev_private; |
1273 | int ret; | |
a4fc5ed6 KP |
1274 | |
1275 | /* We should parse the EDID data and find out if it has an audio sink | |
1276 | */ | |
1277 | ||
335af9a2 | 1278 | ret = intel_ddc_get_modes(connector, intel_encoder->ddc_bus); |
32f9d658 ZW |
1279 | if (ret) |
1280 | return ret; | |
1281 | ||
1282 | /* if eDP has no EDID, try to use fixed panel mode from VBT */ | |
21d40d37 | 1283 | if (IS_eDP(intel_encoder)) { |
32f9d658 ZW |
1284 | if (dev_priv->panel_fixed_mode != NULL) { |
1285 | struct drm_display_mode *mode; | |
1286 | mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); | |
1287 | drm_mode_probed_add(connector, mode); | |
1288 | return 1; | |
1289 | } | |
1290 | } | |
1291 | return 0; | |
a4fc5ed6 KP |
1292 | } |
1293 | ||
1294 | static void | |
1295 | intel_dp_destroy (struct drm_connector *connector) | |
1296 | { | |
21d40d37 | 1297 | struct intel_encoder *intel_encoder = to_intel_encoder(connector); |
a4fc5ed6 | 1298 | |
21d40d37 EA |
1299 | if (intel_encoder->i2c_bus) |
1300 | intel_i2c_destroy(intel_encoder->i2c_bus); | |
a4fc5ed6 KP |
1301 | drm_sysfs_connector_remove(connector); |
1302 | drm_connector_cleanup(connector); | |
21d40d37 | 1303 | kfree(intel_encoder); |
a4fc5ed6 KP |
1304 | } |
1305 | ||
1306 | static const struct drm_encoder_helper_funcs intel_dp_helper_funcs = { | |
1307 | .dpms = intel_dp_dpms, | |
1308 | .mode_fixup = intel_dp_mode_fixup, | |
1309 | .prepare = intel_encoder_prepare, | |
1310 | .mode_set = intel_dp_mode_set, | |
1311 | .commit = intel_encoder_commit, | |
1312 | }; | |
1313 | ||
1314 | static const struct drm_connector_funcs intel_dp_connector_funcs = { | |
1315 | .dpms = drm_helper_connector_dpms, | |
a4fc5ed6 KP |
1316 | .detect = intel_dp_detect, |
1317 | .fill_modes = drm_helper_probe_single_connector_modes, | |
1318 | .destroy = intel_dp_destroy, | |
1319 | }; | |
1320 | ||
1321 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
1322 | .get_modes = intel_dp_get_modes, | |
1323 | .mode_valid = intel_dp_mode_valid, | |
1324 | .best_encoder = intel_best_encoder, | |
1325 | }; | |
1326 | ||
1327 | static void intel_dp_enc_destroy(struct drm_encoder *encoder) | |
1328 | { | |
1329 | drm_encoder_cleanup(encoder); | |
1330 | } | |
1331 | ||
1332 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { | |
1333 | .destroy = intel_dp_enc_destroy, | |
1334 | }; | |
1335 | ||
c8110e52 | 1336 | void |
21d40d37 | 1337 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 1338 | { |
21d40d37 | 1339 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; |
c8110e52 KP |
1340 | |
1341 | if (dp_priv->dpms_mode == DRM_MODE_DPMS_ON) | |
21d40d37 | 1342 | intel_dp_check_link_status(intel_encoder); |
c8110e52 | 1343 | } |
6207937d | 1344 | |
e3421a18 ZW |
1345 | /* Return which DP Port should be selected for Transcoder DP control */ |
1346 | int | |
1347 | intel_trans_dp_port_sel (struct drm_crtc *crtc) | |
1348 | { | |
1349 | struct drm_device *dev = crtc->dev; | |
1350 | struct drm_mode_config *mode_config = &dev->mode_config; | |
1351 | struct drm_encoder *encoder; | |
1352 | struct intel_encoder *intel_encoder = NULL; | |
1353 | ||
1354 | list_for_each_entry(encoder, &mode_config->encoder_list, head) { | |
1355 | if (!encoder || encoder->crtc != crtc) | |
1356 | continue; | |
1357 | ||
1358 | intel_encoder = enc_to_intel_encoder(encoder); | |
1359 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT) { | |
1360 | struct intel_dp_priv *dp_priv = intel_encoder->dev_priv; | |
1361 | return dp_priv->output_reg; | |
1362 | } | |
1363 | } | |
1364 | return -1; | |
1365 | } | |
1366 | ||
a4fc5ed6 KP |
1367 | void |
1368 | intel_dp_init(struct drm_device *dev, int output_reg) | |
1369 | { | |
1370 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1371 | struct drm_connector *connector; | |
21d40d37 | 1372 | struct intel_encoder *intel_encoder; |
a4fc5ed6 | 1373 | struct intel_dp_priv *dp_priv; |
5eb08b69 | 1374 | const char *name = NULL; |
a4fc5ed6 | 1375 | |
21d40d37 | 1376 | intel_encoder = kcalloc(sizeof(struct intel_encoder) + |
a4fc5ed6 | 1377 | sizeof(struct intel_dp_priv), 1, GFP_KERNEL); |
21d40d37 | 1378 | if (!intel_encoder) |
a4fc5ed6 KP |
1379 | return; |
1380 | ||
21d40d37 | 1381 | dp_priv = (struct intel_dp_priv *)(intel_encoder + 1); |
a4fc5ed6 | 1382 | |
21d40d37 | 1383 | connector = &intel_encoder->base; |
a4fc5ed6 KP |
1384 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, |
1385 | DRM_MODE_CONNECTOR_DisplayPort); | |
1386 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); | |
1387 | ||
32f9d658 | 1388 | if (output_reg == DP_A) |
21d40d37 | 1389 | intel_encoder->type = INTEL_OUTPUT_EDP; |
32f9d658 | 1390 | else |
21d40d37 | 1391 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
a4fc5ed6 | 1392 | |
652af9d7 | 1393 | if (output_reg == DP_B || output_reg == PCH_DP_B) |
21d40d37 | 1394 | intel_encoder->clone_mask = (1 << INTEL_DP_B_CLONE_BIT); |
652af9d7 | 1395 | else if (output_reg == DP_C || output_reg == PCH_DP_C) |
21d40d37 | 1396 | intel_encoder->clone_mask = (1 << INTEL_DP_C_CLONE_BIT); |
652af9d7 | 1397 | else if (output_reg == DP_D || output_reg == PCH_DP_D) |
21d40d37 | 1398 | intel_encoder->clone_mask = (1 << INTEL_DP_D_CLONE_BIT); |
f8aed700 | 1399 | |
21d40d37 EA |
1400 | if (IS_eDP(intel_encoder)) |
1401 | intel_encoder->clone_mask = (1 << INTEL_EDP_CLONE_BIT); | |
6251ec0a | 1402 | |
21d40d37 | 1403 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1); |
a4fc5ed6 KP |
1404 | connector->interlace_allowed = true; |
1405 | connector->doublescan_allowed = 0; | |
1406 | ||
21d40d37 | 1407 | dp_priv->intel_encoder = intel_encoder; |
a4fc5ed6 KP |
1408 | dp_priv->output_reg = output_reg; |
1409 | dp_priv->has_audio = false; | |
c8110e52 | 1410 | dp_priv->dpms_mode = DRM_MODE_DPMS_ON; |
21d40d37 | 1411 | intel_encoder->dev_priv = dp_priv; |
a4fc5ed6 | 1412 | |
21d40d37 | 1413 | drm_encoder_init(dev, &intel_encoder->enc, &intel_dp_enc_funcs, |
a4fc5ed6 | 1414 | DRM_MODE_ENCODER_TMDS); |
21d40d37 | 1415 | drm_encoder_helper_add(&intel_encoder->enc, &intel_dp_helper_funcs); |
a4fc5ed6 | 1416 | |
21d40d37 EA |
1417 | drm_mode_connector_attach_encoder(&intel_encoder->base, |
1418 | &intel_encoder->enc); | |
a4fc5ed6 KP |
1419 | drm_sysfs_connector_add(connector); |
1420 | ||
1421 | /* Set up the DDC bus. */ | |
5eb08b69 | 1422 | switch (output_reg) { |
32f9d658 ZW |
1423 | case DP_A: |
1424 | name = "DPDDC-A"; | |
1425 | break; | |
5eb08b69 ZW |
1426 | case DP_B: |
1427 | case PCH_DP_B: | |
b01f2c3a JB |
1428 | dev_priv->hotplug_supported_mask |= |
1429 | HDMIB_HOTPLUG_INT_STATUS; | |
5eb08b69 ZW |
1430 | name = "DPDDC-B"; |
1431 | break; | |
1432 | case DP_C: | |
1433 | case PCH_DP_C: | |
b01f2c3a JB |
1434 | dev_priv->hotplug_supported_mask |= |
1435 | HDMIC_HOTPLUG_INT_STATUS; | |
5eb08b69 ZW |
1436 | name = "DPDDC-C"; |
1437 | break; | |
1438 | case DP_D: | |
1439 | case PCH_DP_D: | |
b01f2c3a JB |
1440 | dev_priv->hotplug_supported_mask |= |
1441 | HDMID_HOTPLUG_INT_STATUS; | |
5eb08b69 ZW |
1442 | name = "DPDDC-D"; |
1443 | break; | |
1444 | } | |
1445 | ||
21d40d37 | 1446 | intel_dp_i2c_init(intel_encoder, name); |
32f9d658 | 1447 | |
21d40d37 EA |
1448 | intel_encoder->ddc_bus = &dp_priv->adapter; |
1449 | intel_encoder->hot_plug = intel_dp_hot_plug; | |
a4fc5ed6 | 1450 | |
32f9d658 ZW |
1451 | if (output_reg == DP_A) { |
1452 | /* initialize panel mode from VBT if available for eDP */ | |
1453 | if (dev_priv->lfp_lvds_vbt_mode) { | |
1454 | dev_priv->panel_fixed_mode = | |
1455 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); | |
1456 | if (dev_priv->panel_fixed_mode) { | |
1457 | dev_priv->panel_fixed_mode->type |= | |
1458 | DRM_MODE_TYPE_PREFERRED; | |
1459 | } | |
1460 | } | |
1461 | } | |
1462 | ||
a4fc5ed6 KP |
1463 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
1464 | * 0xd. Failure to do so will result in spurious interrupts being | |
1465 | * generated on the port when a cable is not attached. | |
1466 | */ | |
1467 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
1468 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
1469 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
1470 | } | |
1471 | } |