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1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * 2014 Red Hat Inc. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice (including the next | |
13 | * paragraph) shall be included in all copies or substantial portions of the | |
14 | * Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
22 | * IN THE SOFTWARE. | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <drm/drmP.h> | |
27 | #include "i915_drv.h" | |
28 | #include "intel_drv.h" | |
29 | #include <drm/drm_crtc_helper.h> | |
30 | #include <drm/drm_edid.h> | |
31 | ||
32 | static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, | |
33 | struct intel_crtc_config *pipe_config) | |
34 | { | |
35 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); | |
36 | struct intel_digital_port *intel_dig_port = intel_mst->primary; | |
37 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
38 | struct drm_device *dev = encoder->base.dev; | |
39 | int bpp; | |
40 | int lane_count, slots; | |
41 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; | |
42 | struct intel_connector *found = NULL, *intel_connector; | |
43 | int mst_pbn; | |
44 | ||
45 | pipe_config->dp_encoder_is_mst = true; | |
46 | pipe_config->has_pch_encoder = false; | |
47 | pipe_config->has_dp_encoder = true; | |
48 | bpp = 24; | |
49 | /* | |
50 | * for MST we always configure max link bw - the spec doesn't | |
51 | * seem to suggest we should do otherwise. | |
52 | */ | |
53 | lane_count = drm_dp_max_lane_count(intel_dp->dpcd); | |
54 | intel_dp->link_bw = intel_dp_max_link_bw(intel_dp); | |
55 | intel_dp->lane_count = lane_count; | |
56 | ||
57 | pipe_config->pipe_bpp = 24; | |
58 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); | |
59 | ||
60 | list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) { | |
61 | if (intel_connector->new_encoder == encoder) { | |
62 | found = intel_connector; | |
63 | break; | |
64 | } | |
65 | } | |
66 | ||
67 | if (!found) { | |
68 | DRM_ERROR("can't find connector\n"); | |
69 | return false; | |
70 | } | |
71 | ||
72 | mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->clock, bpp); | |
73 | ||
74 | pipe_config->pbn = mst_pbn; | |
75 | slots = drm_dp_find_vcpi_slots(&intel_dp->mst_mgr, mst_pbn); | |
76 | ||
77 | intel_link_compute_m_n(bpp, lane_count, | |
78 | adjusted_mode->crtc_clock, | |
79 | pipe_config->port_clock, | |
80 | &pipe_config->dp_m_n); | |
81 | ||
82 | pipe_config->dp_m_n.tu = slots; | |
83 | return true; | |
84 | ||
85 | } | |
86 | ||
87 | static void intel_mst_disable_dp(struct intel_encoder *encoder) | |
88 | { | |
89 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); | |
90 | struct intel_digital_port *intel_dig_port = intel_mst->primary; | |
91 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
92 | int ret; | |
93 | ||
94 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); | |
95 | ||
96 | drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, intel_mst->port); | |
97 | ||
98 | ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); | |
99 | if (ret) { | |
100 | DRM_ERROR("failed to update payload %d\n", ret); | |
101 | } | |
102 | } | |
103 | ||
104 | static void intel_mst_post_disable_dp(struct intel_encoder *encoder) | |
105 | { | |
106 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); | |
107 | struct intel_digital_port *intel_dig_port = intel_mst->primary; | |
108 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
109 | ||
110 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); | |
111 | ||
112 | /* this can fail */ | |
113 | drm_dp_check_act_status(&intel_dp->mst_mgr); | |
114 | /* and this can also fail */ | |
115 | drm_dp_update_payload_part2(&intel_dp->mst_mgr); | |
116 | ||
117 | drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, intel_mst->port); | |
118 | ||
119 | intel_dp->active_mst_links--; | |
120 | intel_mst->port = NULL; | |
121 | if (intel_dp->active_mst_links == 0) { | |
122 | intel_dig_port->base.post_disable(&intel_dig_port->base); | |
123 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); | |
124 | } | |
125 | } | |
126 | ||
127 | static void intel_mst_pre_enable_dp(struct intel_encoder *encoder) | |
128 | { | |
129 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); | |
130 | struct intel_digital_port *intel_dig_port = intel_mst->primary; | |
131 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
132 | struct drm_device *dev = encoder->base.dev; | |
133 | struct drm_i915_private *dev_priv = dev->dev_private; | |
134 | enum port port = intel_dig_port->port; | |
135 | int ret; | |
136 | uint32_t temp; | |
137 | struct intel_connector *found = NULL, *intel_connector; | |
138 | int slots; | |
139 | struct drm_crtc *crtc = encoder->base.crtc; | |
140 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
141 | ||
142 | list_for_each_entry(intel_connector, &dev->mode_config.connector_list, base.head) { | |
143 | if (intel_connector->new_encoder == encoder) { | |
144 | found = intel_connector; | |
145 | break; | |
146 | } | |
147 | } | |
148 | ||
149 | if (!found) { | |
150 | DRM_ERROR("can't find connector\n"); | |
151 | return; | |
152 | } | |
153 | ||
154 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); | |
155 | intel_mst->port = found->port; | |
156 | ||
157 | if (intel_dp->active_mst_links == 0) { | |
158 | enum port port = intel_ddi_get_encoder_port(encoder); | |
159 | ||
160 | I915_WRITE(PORT_CLK_SEL(port), intel_crtc->config.ddi_pll_sel); | |
161 | ||
162 | intel_ddi_init_dp_buf_reg(&intel_dig_port->base); | |
163 | ||
164 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); | |
165 | ||
166 | ||
167 | intel_dp_start_link_train(intel_dp); | |
168 | intel_dp_complete_link_train(intel_dp); | |
169 | intel_dp_stop_link_train(intel_dp); | |
170 | } | |
171 | ||
172 | ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, | |
173 | intel_mst->port, intel_crtc->config.pbn, &slots); | |
174 | if (ret == false) { | |
175 | DRM_ERROR("failed to allocate vcpi\n"); | |
176 | return; | |
177 | } | |
178 | ||
179 | ||
180 | intel_dp->active_mst_links++; | |
181 | temp = I915_READ(DP_TP_STATUS(port)); | |
182 | I915_WRITE(DP_TP_STATUS(port), temp); | |
183 | ||
184 | ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); | |
185 | } | |
186 | ||
187 | static void intel_mst_enable_dp(struct intel_encoder *encoder) | |
188 | { | |
189 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); | |
190 | struct intel_digital_port *intel_dig_port = intel_mst->primary; | |
191 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
192 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
193 | struct drm_i915_private *dev_priv = dev->dev_private; | |
194 | enum port port = intel_dig_port->port; | |
195 | int ret; | |
196 | ||
197 | DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links); | |
198 | ||
199 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_ACT_SENT), | |
200 | 1)) | |
201 | DRM_ERROR("Timed out waiting for ACT sent\n"); | |
202 | ||
203 | ret = drm_dp_check_act_status(&intel_dp->mst_mgr); | |
204 | ||
205 | ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr); | |
206 | } | |
207 | ||
208 | static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, | |
209 | enum pipe *pipe) | |
210 | { | |
211 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); | |
212 | *pipe = intel_mst->pipe; | |
213 | if (intel_mst->port) | |
214 | return true; | |
215 | return false; | |
216 | } | |
217 | ||
218 | static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder, | |
219 | struct intel_crtc_config *pipe_config) | |
220 | { | |
221 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); | |
222 | struct intel_digital_port *intel_dig_port = intel_mst->primary; | |
223 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
224 | struct drm_device *dev = encoder->base.dev; | |
225 | struct drm_i915_private *dev_priv = dev->dev_private; | |
226 | enum transcoder cpu_transcoder = crtc->config.cpu_transcoder; | |
227 | u32 temp, flags = 0; | |
228 | ||
229 | pipe_config->has_dp_encoder = true; | |
230 | ||
231 | temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder)); | |
232 | if (temp & TRANS_DDI_PHSYNC) | |
233 | flags |= DRM_MODE_FLAG_PHSYNC; | |
234 | else | |
235 | flags |= DRM_MODE_FLAG_NHSYNC; | |
236 | if (temp & TRANS_DDI_PVSYNC) | |
237 | flags |= DRM_MODE_FLAG_PVSYNC; | |
238 | else | |
239 | flags |= DRM_MODE_FLAG_NVSYNC; | |
240 | ||
241 | switch (temp & TRANS_DDI_BPC_MASK) { | |
242 | case TRANS_DDI_BPC_6: | |
243 | pipe_config->pipe_bpp = 18; | |
244 | break; | |
245 | case TRANS_DDI_BPC_8: | |
246 | pipe_config->pipe_bpp = 24; | |
247 | break; | |
248 | case TRANS_DDI_BPC_10: | |
249 | pipe_config->pipe_bpp = 30; | |
250 | break; | |
251 | case TRANS_DDI_BPC_12: | |
252 | pipe_config->pipe_bpp = 36; | |
253 | break; | |
254 | default: | |
255 | break; | |
256 | } | |
257 | pipe_config->adjusted_mode.flags |= flags; | |
258 | intel_dp_get_m_n(crtc, pipe_config); | |
259 | ||
260 | intel_ddi_clock_get(&intel_dig_port->base, pipe_config); | |
261 | } | |
262 | ||
263 | static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector) | |
264 | { | |
265 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
266 | struct intel_dp *intel_dp = intel_connector->mst_port; | |
267 | struct edid *edid; | |
268 | int ret; | |
269 | ||
270 | edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); | |
271 | if (!edid) | |
272 | return 0; | |
273 | ||
274 | ret = intel_connector_update_modes(connector, edid); | |
275 | kfree(edid); | |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
280 | static enum drm_connector_status | |
281 | intel_mst_port_dp_detect(struct drm_connector *connector) | |
282 | { | |
283 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
284 | struct intel_dp *intel_dp = intel_connector->mst_port; | |
285 | ||
286 | return drm_dp_mst_detect_port(&intel_dp->mst_mgr, intel_connector->port); | |
287 | } | |
288 | ||
289 | static enum drm_connector_status | |
290 | intel_dp_mst_detect(struct drm_connector *connector, bool force) | |
291 | { | |
292 | enum drm_connector_status status; | |
293 | status = intel_mst_port_dp_detect(connector); | |
294 | return status; | |
295 | } | |
296 | ||
297 | static int | |
298 | intel_dp_mst_set_property(struct drm_connector *connector, | |
299 | struct drm_property *property, | |
300 | uint64_t val) | |
301 | { | |
302 | return 0; | |
303 | } | |
304 | ||
305 | static void | |
306 | intel_dp_mst_connector_destroy(struct drm_connector *connector) | |
307 | { | |
308 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
309 | ||
310 | if (!IS_ERR_OR_NULL(intel_connector->edid)) | |
311 | kfree(intel_connector->edid); | |
312 | ||
313 | drm_connector_cleanup(connector); | |
314 | kfree(connector); | |
315 | } | |
316 | ||
317 | static const struct drm_connector_funcs intel_dp_mst_connector_funcs = { | |
318 | .dpms = intel_connector_dpms, | |
319 | .detect = intel_dp_mst_detect, | |
320 | .fill_modes = drm_helper_probe_single_connector_modes, | |
321 | .set_property = intel_dp_mst_set_property, | |
322 | .destroy = intel_dp_mst_connector_destroy, | |
323 | }; | |
324 | ||
325 | static int intel_dp_mst_get_modes(struct drm_connector *connector) | |
326 | { | |
327 | return intel_dp_mst_get_ddc_modes(connector); | |
328 | } | |
329 | ||
330 | static enum drm_mode_status | |
331 | intel_dp_mst_mode_valid(struct drm_connector *connector, | |
332 | struct drm_display_mode *mode) | |
333 | { | |
334 | /* TODO - validate mode against available PBN for link */ | |
335 | if (mode->clock < 10000) | |
336 | return MODE_CLOCK_LOW; | |
337 | ||
338 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) | |
339 | return MODE_H_ILLEGAL; | |
340 | ||
341 | return MODE_OK; | |
342 | } | |
343 | ||
344 | static struct drm_encoder *intel_mst_best_encoder(struct drm_connector *connector) | |
345 | { | |
346 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
347 | struct intel_dp *intel_dp = intel_connector->mst_port; | |
348 | return &intel_dp->mst_encoders[0]->base.base; | |
349 | } | |
350 | ||
351 | static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = { | |
352 | .get_modes = intel_dp_mst_get_modes, | |
353 | .mode_valid = intel_dp_mst_mode_valid, | |
354 | .best_encoder = intel_mst_best_encoder, | |
355 | }; | |
356 | ||
357 | static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder) | |
358 | { | |
359 | struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); | |
360 | ||
361 | drm_encoder_cleanup(encoder); | |
362 | kfree(intel_mst); | |
363 | } | |
364 | ||
365 | static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = { | |
366 | .destroy = intel_dp_mst_encoder_destroy, | |
367 | }; | |
368 | ||
369 | static bool intel_dp_mst_get_hw_state(struct intel_connector *connector) | |
370 | { | |
371 | if (connector->encoder) { | |
372 | enum pipe pipe; | |
373 | if (!connector->encoder->get_hw_state(connector->encoder, &pipe)) | |
374 | return false; | |
375 | return true; | |
376 | } | |
377 | return false; | |
378 | } | |
379 | ||
7296c849 CW |
380 | static void intel_connector_add_to_fbdev(struct intel_connector *connector) |
381 | { | |
382 | #ifdef CONFIG_DRM_I915_FBDEV | |
383 | struct drm_i915_private *dev_priv = to_i915(connector->base.dev); | |
384 | drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper, &connector->base); | |
385 | #endif | |
386 | } | |
387 | ||
388 | static void intel_connector_remove_from_fbdev(struct intel_connector *connector) | |
389 | { | |
390 | #ifdef CONFIG_DRM_I915_FBDEV | |
391 | struct drm_i915_private *dev_priv = to_i915(connector->base.dev); | |
392 | drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper, &connector->base); | |
393 | #endif | |
394 | } | |
395 | ||
0e32b39c DA |
396 | static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, char *pathprop) |
397 | { | |
398 | struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); | |
399 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
400 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
0e32b39c DA |
401 | struct intel_connector *intel_connector; |
402 | struct drm_connector *connector; | |
403 | int i; | |
404 | ||
405 | intel_connector = kzalloc(sizeof(*intel_connector), GFP_KERNEL); | |
406 | if (!intel_connector) | |
407 | return NULL; | |
408 | ||
409 | connector = &intel_connector->base; | |
410 | drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort); | |
411 | drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs); | |
412 | ||
413 | intel_connector->unregister = intel_connector_unregister; | |
414 | intel_connector->get_hw_state = intel_dp_mst_get_hw_state; | |
415 | intel_connector->mst_port = intel_dp; | |
416 | intel_connector->port = port; | |
417 | ||
418 | for (i = PIPE_A; i <= PIPE_C; i++) { | |
419 | drm_mode_connector_attach_encoder(&intel_connector->base, | |
420 | &intel_dp->mst_encoders[i]->base.base); | |
421 | } | |
422 | intel_dp_add_properties(intel_dp, connector); | |
423 | ||
424 | drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); | |
425 | drm_mode_connector_set_path_property(connector, pathprop); | |
426 | drm_reinit_primary_mode_group(dev); | |
427 | mutex_lock(&dev->mode_config.mutex); | |
7296c849 | 428 | intel_connector_add_to_fbdev(intel_connector); |
0e32b39c DA |
429 | mutex_unlock(&dev->mode_config.mutex); |
430 | drm_connector_register(&intel_connector->base); | |
431 | return connector; | |
432 | } | |
433 | ||
434 | static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, | |
435 | struct drm_connector *connector) | |
436 | { | |
437 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
438 | struct drm_device *dev = connector->dev; | |
0e32b39c DA |
439 | /* need to nuke the connector */ |
440 | mutex_lock(&dev->mode_config.mutex); | |
441 | intel_connector_dpms(connector, DRM_MODE_DPMS_OFF); | |
442 | mutex_unlock(&dev->mode_config.mutex); | |
443 | ||
444 | intel_connector->unregister(intel_connector); | |
445 | ||
446 | mutex_lock(&dev->mode_config.mutex); | |
7296c849 | 447 | intel_connector_remove_from_fbdev(intel_connector); |
0e32b39c DA |
448 | drm_connector_cleanup(connector); |
449 | mutex_unlock(&dev->mode_config.mutex); | |
450 | ||
451 | drm_reinit_primary_mode_group(dev); | |
452 | ||
453 | kfree(intel_connector); | |
454 | DRM_DEBUG_KMS("\n"); | |
455 | } | |
456 | ||
457 | static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) | |
458 | { | |
459 | struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); | |
460 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
461 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
462 | ||
463 | drm_kms_helper_hotplug_event(dev); | |
464 | } | |
465 | ||
466 | static struct drm_dp_mst_topology_cbs mst_cbs = { | |
467 | .add_connector = intel_dp_add_mst_connector, | |
468 | .destroy_connector = intel_dp_destroy_mst_connector, | |
469 | .hotplug = intel_dp_mst_hotplug, | |
470 | }; | |
471 | ||
472 | static struct intel_dp_mst_encoder * | |
473 | intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe) | |
474 | { | |
475 | struct intel_dp_mst_encoder *intel_mst; | |
476 | struct intel_encoder *intel_encoder; | |
477 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
478 | ||
479 | intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL); | |
480 | ||
481 | if (!intel_mst) | |
482 | return NULL; | |
483 | ||
484 | intel_mst->pipe = pipe; | |
485 | intel_encoder = &intel_mst->base; | |
486 | intel_mst->primary = intel_dig_port; | |
487 | ||
488 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs, | |
489 | DRM_MODE_ENCODER_DPMST); | |
490 | ||
491 | intel_encoder->type = INTEL_OUTPUT_DP_MST; | |
492 | intel_encoder->crtc_mask = 0x7; | |
493 | intel_encoder->cloneable = 0; | |
494 | ||
495 | intel_encoder->compute_config = intel_dp_mst_compute_config; | |
496 | intel_encoder->disable = intel_mst_disable_dp; | |
497 | intel_encoder->post_disable = intel_mst_post_disable_dp; | |
498 | intel_encoder->pre_enable = intel_mst_pre_enable_dp; | |
499 | intel_encoder->enable = intel_mst_enable_dp; | |
500 | intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state; | |
501 | intel_encoder->get_config = intel_dp_mst_enc_get_config; | |
502 | ||
503 | return intel_mst; | |
504 | ||
505 | } | |
506 | ||
507 | static bool | |
508 | intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port) | |
509 | { | |
510 | int i; | |
511 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
512 | ||
513 | for (i = PIPE_A; i <= PIPE_C; i++) | |
514 | intel_dp->mst_encoders[i] = intel_dp_create_fake_mst_encoder(intel_dig_port, i); | |
515 | return true; | |
516 | } | |
517 | ||
518 | int | |
519 | intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id) | |
520 | { | |
521 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
522 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
523 | int ret; | |
524 | ||
525 | intel_dp->can_mst = true; | |
526 | intel_dp->mst_mgr.cbs = &mst_cbs; | |
527 | ||
528 | /* create encoders */ | |
529 | intel_dp_create_fake_mst_encoders(intel_dig_port); | |
530 | ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev->dev, &intel_dp->aux, 16, 3, conn_base_id); | |
531 | if (ret) { | |
532 | intel_dp->can_mst = false; | |
533 | return ret; | |
534 | } | |
535 | return 0; | |
536 | } | |
537 | ||
538 | void | |
539 | intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port) | |
540 | { | |
541 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
542 | ||
543 | if (!intel_dp->can_mst) | |
544 | return; | |
545 | ||
546 | drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr); | |
547 | /* encoders will get killed by normal cleanup */ | |
548 | } |