blob: b6bf7fd0b806362e0c903fcbf7219458b88b977f [file] [log] [blame]
Dave Airlie0e32b392014-05-02 14:02:48 +10001/*
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"
Matt Roperc6f95f22015-01-22 16:50:32 -080029#include <drm/drm_atomic_helper.h>
Dave Airlie0e32b392014-05-02 14:02:48 +100030#include <drm/drm_crtc_helper.h>
31#include <drm/drm_edid.h>
32
33static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
Ander Conselvan de Oliveira5cec2582015-01-15 14:55:21 +020034 struct intel_crtc_state *pipe_config)
Dave Airlie0e32b392014-05-02 14:02:48 +100035{
36 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
37 struct intel_digital_port *intel_dig_port = intel_mst->primary;
38 struct intel_dp *intel_dp = &intel_dig_port->dp;
Ander Conselvan de Oliveirae75f4772015-03-20 16:18:13 +020039 struct drm_atomic_state *state;
40 int bpp, i;
Ville Syrjälä04a60f92015-07-06 15:10:06 +030041 int lane_count, slots;
Ville Syrjälä7c5f93b2015-09-08 13:40:49 +030042 const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
Ander Conselvan de Oliveirada3ced2982015-04-21 17:12:59 +030043 struct drm_connector *drm_connector;
44 struct intel_connector *connector, *found = NULL;
45 struct drm_connector_state *connector_state;
Dave Airlie0e32b392014-05-02 14:02:48 +100046 int mst_pbn;
47
48 pipe_config->dp_encoder_is_mst = true;
49 pipe_config->has_pch_encoder = false;
50 pipe_config->has_dp_encoder = true;
51 bpp = 24;
52 /*
53 * for MST we always configure max link bw - the spec doesn't
54 * seem to suggest we should do otherwise.
55 */
56 lane_count = drm_dp_max_lane_count(intel_dp->dpcd);
Ville Syrjäläed4e9c12015-03-12 17:10:36 +020057
Ville Syrjäläed4e9c12015-03-12 17:10:36 +020058
Ville Syrjälä90a6b7b2015-07-06 16:39:15 +030059 pipe_config->lane_count = lane_count;
Dave Airlie0e32b392014-05-02 14:02:48 +100060
61 pipe_config->pipe_bpp = 24;
Ville Syrjälä04a60f92015-07-06 15:10:06 +030062 pipe_config->port_clock = intel_dp_max_link_rate(intel_dp);
Dave Airlie0e32b392014-05-02 14:02:48 +100063
Ander Conselvan de Oliveirae75f4772015-03-20 16:18:13 +020064 state = pipe_config->base.state;
65
Ander Conselvan de Oliveirada3ced2982015-04-21 17:12:59 +030066 for_each_connector_in_state(state, drm_connector, connector_state, i) {
67 connector = to_intel_connector(drm_connector);
Ander Conselvan de Oliveirae75f4772015-03-20 16:18:13 +020068
Ander Conselvan de Oliveirada3ced2982015-04-21 17:12:59 +030069 if (connector_state->best_encoder == &encoder->base) {
70 found = connector;
Dave Airlie0e32b392014-05-02 14:02:48 +100071 break;
72 }
73 }
74
75 if (!found) {
76 DRM_ERROR("can't find connector\n");
77 return false;
78 }
79
Libin Yang3d52ccf2015-12-02 14:09:44 +080080 if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, found->port))
81 pipe_config->has_audio = true;
Ville Syrjäläaad941d2015-09-25 16:38:56 +030082 mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
Dave Airlie0e32b392014-05-02 14:02:48 +100083
84 pipe_config->pbn = mst_pbn;
85 slots = drm_dp_find_vcpi_slots(&intel_dp->mst_mgr, mst_pbn);
86
87 intel_link_compute_m_n(bpp, lane_count,
88 adjusted_mode->crtc_clock,
89 pipe_config->port_clock,
90 &pipe_config->dp_m_n);
91
92 pipe_config->dp_m_n.tu = slots;
Ander Conselvan de Oliveira6fa2d192015-08-31 11:23:28 +030093
Dave Airlie0e32b392014-05-02 14:02:48 +100094 return true;
95
96}
97
98static void intel_mst_disable_dp(struct intel_encoder *encoder)
99{
100 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
101 struct intel_digital_port *intel_dig_port = intel_mst->primary;
102 struct intel_dp *intel_dp = &intel_dig_port->dp;
Libin Yang3d52ccf2015-12-02 14:09:44 +0800103 struct drm_device *dev = encoder->base.dev;
104 struct drm_i915_private *dev_priv = dev->dev_private;
105 struct drm_crtc *crtc = encoder->base.crtc;
106 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
107
Dave Airlie0e32b392014-05-02 14:02:48 +1000108 int ret;
109
110 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
111
Dave Airlie0552f762016-03-09 11:14:38 +1000112 drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, intel_mst->connector->port);
Dave Airlie0e32b392014-05-02 14:02:48 +1000113
114 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
115 if (ret) {
116 DRM_ERROR("failed to update payload %d\n", ret);
117 }
Libin Yang3d52ccf2015-12-02 14:09:44 +0800118 if (intel_crtc->config->has_audio) {
119 intel_audio_codec_disable(encoder);
120 intel_display_power_put(dev_priv, POWER_DOMAIN_AUDIO);
121 }
Dave Airlie0e32b392014-05-02 14:02:48 +1000122}
123
124static void intel_mst_post_disable_dp(struct intel_encoder *encoder)
125{
126 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
127 struct intel_digital_port *intel_dig_port = intel_mst->primary;
128 struct intel_dp *intel_dp = &intel_dig_port->dp;
129
130 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
131
132 /* this can fail */
133 drm_dp_check_act_status(&intel_dp->mst_mgr);
134 /* and this can also fail */
135 drm_dp_update_payload_part2(&intel_dp->mst_mgr);
136
Dave Airlie0552f762016-03-09 11:14:38 +1000137 drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, intel_mst->connector->port);
Dave Airlie0e32b392014-05-02 14:02:48 +1000138
139 intel_dp->active_mst_links--;
Dave Airlie0552f762016-03-09 11:14:38 +1000140
141 intel_mst->connector = NULL;
Dave Airlie0e32b392014-05-02 14:02:48 +1000142 if (intel_dp->active_mst_links == 0) {
143 intel_dig_port->base.post_disable(&intel_dig_port->base);
144 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
145 }
146}
147
148static void intel_mst_pre_enable_dp(struct intel_encoder *encoder)
149{
150 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
151 struct intel_digital_port *intel_dig_port = intel_mst->primary;
152 struct intel_dp *intel_dp = &intel_dig_port->dp;
153 struct drm_device *dev = encoder->base.dev;
154 struct drm_i915_private *dev_priv = dev->dev_private;
155 enum port port = intel_dig_port->port;
156 int ret;
157 uint32_t temp;
Ander Conselvan de Oliveira9b4fd8f2015-04-02 14:48:01 +0300158 struct intel_connector *found = NULL, *connector;
Dave Airlie0e32b392014-05-02 14:02:48 +1000159 int slots;
160 struct drm_crtc *crtc = encoder->base.crtc;
161 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
162
Ander Conselvan de Oliveira9b4fd8f2015-04-02 14:48:01 +0300163 for_each_intel_connector(dev, connector) {
164 if (connector->base.state->best_encoder == &encoder->base) {
165 found = connector;
Dave Airlie0e32b392014-05-02 14:02:48 +1000166 break;
167 }
168 }
169
170 if (!found) {
171 DRM_ERROR("can't find connector\n");
172 return;
173 }
174
Maarten Lankhorste85376c2015-08-27 13:13:31 +0200175 /* MST encoders are bound to a crtc, not to a connector,
176 * force the mapping here for get_hw_state.
177 */
178 found->encoder = encoder;
179
Dave Airlie0e32b392014-05-02 14:02:48 +1000180 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
Dave Airlie0552f762016-03-09 11:14:38 +1000181
182 intel_mst->connector = found;
Dave Airlie0e32b392014-05-02 14:02:48 +1000183
184 if (intel_dp->active_mst_links == 0) {
Ville Syrjälä6a7e4f92015-12-08 19:59:44 +0200185 intel_prepare_ddi_buffer(&intel_dig_port->base);
186
Ville Syrjäläd9191612015-12-08 19:59:36 +0200187 intel_ddi_clk_select(&intel_dig_port->base, intel_crtc->config);
Dave Airlie0e32b392014-05-02 14:02:48 +1000188
Ville Syrjälä901c2da2015-08-17 18:05:12 +0300189 intel_dp_set_link_params(intel_dp, intel_crtc->config);
190
Dave Airlie0e32b392014-05-02 14:02:48 +1000191 intel_ddi_init_dp_buf_reg(&intel_dig_port->base);
192
193 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
194
Dave Airlie0e32b392014-05-02 14:02:48 +1000195 intel_dp_start_link_train(intel_dp);
Dave Airlie0e32b392014-05-02 14:02:48 +1000196 intel_dp_stop_link_train(intel_dp);
197 }
198
199 ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr,
Dave Airlie0552f762016-03-09 11:14:38 +1000200 intel_mst->connector->port,
Ander Conselvan de Oliveira6e3c9712015-01-15 14:55:25 +0200201 intel_crtc->config->pbn, &slots);
Dave Airlie0e32b392014-05-02 14:02:48 +1000202 if (ret == false) {
203 DRM_ERROR("failed to allocate vcpi\n");
204 return;
205 }
206
207
208 intel_dp->active_mst_links++;
209 temp = I915_READ(DP_TP_STATUS(port));
210 I915_WRITE(DP_TP_STATUS(port), temp);
211
212 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
213}
214
215static void intel_mst_enable_dp(struct intel_encoder *encoder)
216{
217 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
218 struct intel_digital_port *intel_dig_port = intel_mst->primary;
219 struct intel_dp *intel_dp = &intel_dig_port->dp;
220 struct drm_device *dev = intel_dig_port->base.base.dev;
221 struct drm_i915_private *dev_priv = dev->dev_private;
Libin Yang3d52ccf2015-12-02 14:09:44 +0800222 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
Dave Airlie0e32b392014-05-02 14:02:48 +1000223 enum port port = intel_dig_port->port;
224 int ret;
225
226 DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
227
228 if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_ACT_SENT),
229 1))
230 DRM_ERROR("Timed out waiting for ACT sent\n");
231
232 ret = drm_dp_check_act_status(&intel_dp->mst_mgr);
233
234 ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr);
Libin Yang3d52ccf2015-12-02 14:09:44 +0800235
236 if (crtc->config->has_audio) {
237 DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n",
238 pipe_name(crtc->pipe));
239 intel_display_power_get(dev_priv, POWER_DOMAIN_AUDIO);
240 intel_audio_codec_enable(encoder);
241 }
Dave Airlie0e32b392014-05-02 14:02:48 +1000242}
243
244static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder,
245 enum pipe *pipe)
246{
247 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
248 *pipe = intel_mst->pipe;
Dave Airlie0552f762016-03-09 11:14:38 +1000249 if (intel_mst->connector)
Dave Airlie0e32b392014-05-02 14:02:48 +1000250 return true;
251 return false;
252}
253
254static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
Ander Conselvan de Oliveira5cec2582015-01-15 14:55:21 +0200255 struct intel_crtc_state *pipe_config)
Dave Airlie0e32b392014-05-02 14:02:48 +1000256{
257 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
258 struct intel_digital_port *intel_dig_port = intel_mst->primary;
259 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
260 struct drm_device *dev = encoder->base.dev;
261 struct drm_i915_private *dev_priv = dev->dev_private;
Ander Conselvan de Oliveira0cb09a92015-01-30 12:17:23 +0200262 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
Dave Airlie0e32b392014-05-02 14:02:48 +1000263 u32 temp, flags = 0;
264
265 pipe_config->has_dp_encoder = true;
266
Libin Yang3d52ccf2015-12-02 14:09:44 +0800267 pipe_config->has_audio =
268 intel_ddi_is_audio_enabled(dev_priv, crtc);
269
Dave Airlie0e32b392014-05-02 14:02:48 +1000270 temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
271 if (temp & TRANS_DDI_PHSYNC)
272 flags |= DRM_MODE_FLAG_PHSYNC;
273 else
274 flags |= DRM_MODE_FLAG_NHSYNC;
275 if (temp & TRANS_DDI_PVSYNC)
276 flags |= DRM_MODE_FLAG_PVSYNC;
277 else
278 flags |= DRM_MODE_FLAG_NVSYNC;
279
280 switch (temp & TRANS_DDI_BPC_MASK) {
281 case TRANS_DDI_BPC_6:
282 pipe_config->pipe_bpp = 18;
283 break;
284 case TRANS_DDI_BPC_8:
285 pipe_config->pipe_bpp = 24;
286 break;
287 case TRANS_DDI_BPC_10:
288 pipe_config->pipe_bpp = 30;
289 break;
290 case TRANS_DDI_BPC_12:
291 pipe_config->pipe_bpp = 36;
292 break;
293 default:
294 break;
295 }
Ander Conselvan de Oliveira2d112de2015-01-15 14:55:22 +0200296 pipe_config->base.adjusted_mode.flags |= flags;
Ville Syrjälä90a6b7b2015-07-06 16:39:15 +0300297
298 pipe_config->lane_count =
299 ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
300
Dave Airlie0e32b392014-05-02 14:02:48 +1000301 intel_dp_get_m_n(crtc, pipe_config);
302
303 intel_ddi_clock_get(&intel_dig_port->base, pipe_config);
304}
305
306static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector)
307{
308 struct intel_connector *intel_connector = to_intel_connector(connector);
309 struct intel_dp *intel_dp = intel_connector->mst_port;
310 struct edid *edid;
311 int ret;
312
Dave Airlie0552f762016-03-09 11:14:38 +1000313 if (!intel_dp) {
314 return intel_connector_update_modes(connector, NULL);
315 }
Dave Airlie0e32b392014-05-02 14:02:48 +1000316
Dave Airlie0552f762016-03-09 11:14:38 +1000317 edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port);
Dave Airlie0e32b392014-05-02 14:02:48 +1000318 ret = intel_connector_update_modes(connector, edid);
319 kfree(edid);
320
321 return ret;
322}
323
324static enum drm_connector_status
Daniel Vetterf7f3d482014-10-22 11:06:44 +0200325intel_dp_mst_detect(struct drm_connector *connector, bool force)
Dave Airlie0e32b392014-05-02 14:02:48 +1000326{
327 struct intel_connector *intel_connector = to_intel_connector(connector);
328 struct intel_dp *intel_dp = intel_connector->mst_port;
329
Dave Airlie0552f762016-03-09 11:14:38 +1000330 if (!intel_dp)
331 return connector_status_disconnected;
Dave Airliec6a0aed2014-10-20 16:28:02 +1000332 return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, intel_connector->port);
Dave Airlie0e32b392014-05-02 14:02:48 +1000333}
334
Dave Airlie0e32b392014-05-02 14:02:48 +1000335static int
336intel_dp_mst_set_property(struct drm_connector *connector,
337 struct drm_property *property,
338 uint64_t val)
339{
340 return 0;
341}
342
343static void
344intel_dp_mst_connector_destroy(struct drm_connector *connector)
345{
346 struct intel_connector *intel_connector = to_intel_connector(connector);
347
348 if (!IS_ERR_OR_NULL(intel_connector->edid))
349 kfree(intel_connector->edid);
350
351 drm_connector_cleanup(connector);
352 kfree(connector);
353}
354
355static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
Maarten Lankhorst4d688a22015-08-05 12:37:06 +0200356 .dpms = drm_atomic_helper_connector_dpms,
Dave Airlie0e32b392014-05-02 14:02:48 +1000357 .detect = intel_dp_mst_detect,
358 .fill_modes = drm_helper_probe_single_connector_modes,
359 .set_property = intel_dp_mst_set_property,
Matt Roper2545e4a2015-01-22 16:51:27 -0800360 .atomic_get_property = intel_connector_atomic_get_property,
Dave Airlie0e32b392014-05-02 14:02:48 +1000361 .destroy = intel_dp_mst_connector_destroy,
Matt Roperc6f95f22015-01-22 16:50:32 -0800362 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
Ander Conselvan de Oliveira98969722015-03-20 16:18:06 +0200363 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
Dave Airlie0e32b392014-05-02 14:02:48 +1000364};
365
366static int intel_dp_mst_get_modes(struct drm_connector *connector)
367{
368 return intel_dp_mst_get_ddc_modes(connector);
369}
370
371static enum drm_mode_status
372intel_dp_mst_mode_valid(struct drm_connector *connector,
373 struct drm_display_mode *mode)
374{
Mika Kahola832d5bf2016-02-02 15:16:40 +0200375 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
376
Dave Airlie0e32b392014-05-02 14:02:48 +1000377 /* TODO - validate mode against available PBN for link */
378 if (mode->clock < 10000)
379 return MODE_CLOCK_LOW;
380
381 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
382 return MODE_H_ILLEGAL;
383
Mika Kahola832d5bf2016-02-02 15:16:40 +0200384 if (mode->clock > max_dotclk)
385 return MODE_CLOCK_HIGH;
386
Dave Airlie0e32b392014-05-02 14:02:48 +1000387 return MODE_OK;
388}
389
Daniel Vetter459485a2015-08-03 17:24:09 +0200390static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector,
391 struct drm_connector_state *state)
392{
393 struct intel_connector *intel_connector = to_intel_connector(connector);
394 struct intel_dp *intel_dp = intel_connector->mst_port;
395 struct intel_crtc *crtc = to_intel_crtc(state->crtc);
396
Dave Airlie0552f762016-03-09 11:14:38 +1000397 if (!intel_dp)
398 return NULL;
Daniel Vetter459485a2015-08-03 17:24:09 +0200399 return &intel_dp->mst_encoders[crtc->pipe]->base.base;
400}
401
Dave Airlie0e32b392014-05-02 14:02:48 +1000402static struct drm_encoder *intel_mst_best_encoder(struct drm_connector *connector)
403{
404 struct intel_connector *intel_connector = to_intel_connector(connector);
405 struct intel_dp *intel_dp = intel_connector->mst_port;
Dave Airlie0552f762016-03-09 11:14:38 +1000406 if (!intel_dp)
407 return NULL;
Dave Airlie0e32b392014-05-02 14:02:48 +1000408 return &intel_dp->mst_encoders[0]->base.base;
409}
410
411static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = {
412 .get_modes = intel_dp_mst_get_modes,
413 .mode_valid = intel_dp_mst_mode_valid,
Daniel Vetter459485a2015-08-03 17:24:09 +0200414 .atomic_best_encoder = intel_mst_atomic_best_encoder,
Dave Airlie0e32b392014-05-02 14:02:48 +1000415 .best_encoder = intel_mst_best_encoder,
416};
417
418static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder)
419{
420 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
421
422 drm_encoder_cleanup(encoder);
423 kfree(intel_mst);
424}
425
426static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = {
427 .destroy = intel_dp_mst_encoder_destroy,
428};
429
430static bool intel_dp_mst_get_hw_state(struct intel_connector *connector)
431{
Maarten Lankhorste85376c2015-08-27 13:13:31 +0200432 if (connector->encoder && connector->base.state->crtc) {
Dave Airlie0e32b392014-05-02 14:02:48 +1000433 enum pipe pipe;
434 if (!connector->encoder->get_hw_state(connector->encoder, &pipe))
435 return false;
436 return true;
437 }
438 return false;
439}
440
Chris Wilson7296c842014-07-22 20:10:28 +1000441static void intel_connector_add_to_fbdev(struct intel_connector *connector)
442{
Daniel Vetter06957262015-08-10 13:34:08 +0200443#ifdef CONFIG_DRM_FBDEV_EMULATION
Chris Wilson7296c842014-07-22 20:10:28 +1000444 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
Lukas Wunner54632ab2015-11-18 13:43:20 +0100445
446 if (dev_priv->fbdev)
447 drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper,
448 &connector->base);
Chris Wilson7296c842014-07-22 20:10:28 +1000449#endif
450}
451
452static void intel_connector_remove_from_fbdev(struct intel_connector *connector)
453{
Daniel Vetter06957262015-08-10 13:34:08 +0200454#ifdef CONFIG_DRM_FBDEV_EMULATION
Chris Wilson7296c842014-07-22 20:10:28 +1000455 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
Lukas Wunner54632ab2015-11-18 13:43:20 +0100456
457 if (dev_priv->fbdev)
458 drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper,
459 &connector->base);
Chris Wilson7296c842014-07-22 20:10:28 +1000460#endif
461}
462
Thierry Reding12e6cec2014-05-13 11:38:36 +0200463static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *pathprop)
Dave Airlie0e32b392014-05-02 14:02:48 +1000464{
465 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
466 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
467 struct drm_device *dev = intel_dig_port->base.base.dev;
Dave Airlie0e32b392014-05-02 14:02:48 +1000468 struct intel_connector *intel_connector;
469 struct drm_connector *connector;
470 int i;
471
Ander Conselvan de Oliveira9bdbd0b2015-04-10 10:59:10 +0300472 intel_connector = intel_connector_alloc();
Dave Airlie0e32b392014-05-02 14:02:48 +1000473 if (!intel_connector)
474 return NULL;
475
476 connector = &intel_connector->base;
477 drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort);
478 drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs);
479
480 intel_connector->unregister = intel_connector_unregister;
481 intel_connector->get_hw_state = intel_dp_mst_get_hw_state;
482 intel_connector->mst_port = intel_dp;
483 intel_connector->port = port;
484
485 for (i = PIPE_A; i <= PIPE_C; i++) {
486 drm_mode_connector_attach_encoder(&intel_connector->base,
487 &intel_dp->mst_encoders[i]->base.base);
488 }
489 intel_dp_add_properties(intel_dp, connector);
490
491 drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
Dave Airlie6f134d72014-10-20 16:30:50 +1000492 drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);
493
Dave Airlie0e32b392014-05-02 14:02:48 +1000494 drm_mode_connector_set_path_property(connector, pathprop);
Dave Airlied9515c52015-09-16 17:55:23 +1000495 return connector;
496}
497
498static void intel_dp_register_mst_connector(struct drm_connector *connector)
499{
500 struct intel_connector *intel_connector = to_intel_connector(connector);
501 struct drm_device *dev = connector->dev;
Daniel Vetter8bb4da12015-07-09 23:44:31 +0200502 drm_modeset_lock_all(dev);
Chris Wilson7296c842014-07-22 20:10:28 +1000503 intel_connector_add_to_fbdev(intel_connector);
Daniel Vetter8bb4da12015-07-09 23:44:31 +0200504 drm_modeset_unlock_all(dev);
Dave Airlie0e32b392014-05-02 14:02:48 +1000505 drm_connector_register(&intel_connector->base);
Dave Airlie0e32b392014-05-02 14:02:48 +1000506}
507
508static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
509 struct drm_connector *connector)
510{
511 struct intel_connector *intel_connector = to_intel_connector(connector);
512 struct drm_device *dev = connector->dev;
Maarten Lankhorst20fae982015-08-06 13:47:36 +0200513
Lyude1f771752016-03-16 15:18:04 -0400514 intel_connector->unregister(intel_connector);
515
Dave Airlie0e32b392014-05-02 14:02:48 +1000516 /* need to nuke the connector */
Daniel Vetter8bb4da12015-07-09 23:44:31 +0200517 drm_modeset_lock_all(dev);
Chris Wilson7296c842014-07-22 20:10:28 +1000518 intel_connector_remove_from_fbdev(intel_connector);
Dave Airlie0552f762016-03-09 11:14:38 +1000519 intel_connector->mst_port = NULL;
Daniel Vetter8bb4da12015-07-09 23:44:31 +0200520 drm_modeset_unlock_all(dev);
Dave Airlie0e32b392014-05-02 14:02:48 +1000521
Dave Airlie0552f762016-03-09 11:14:38 +1000522 drm_connector_unreference(&intel_connector->base);
Dave Airlie0e32b392014-05-02 14:02:48 +1000523 DRM_DEBUG_KMS("\n");
524}
525
526static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
527{
528 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
529 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
530 struct drm_device *dev = intel_dig_port->base.base.dev;
531
532 drm_kms_helper_hotplug_event(dev);
533}
534
Julia Lawall69a0f892015-12-30 22:20:30 +0100535static const struct drm_dp_mst_topology_cbs mst_cbs = {
Dave Airlie0e32b392014-05-02 14:02:48 +1000536 .add_connector = intel_dp_add_mst_connector,
Dave Airlied9515c52015-09-16 17:55:23 +1000537 .register_connector = intel_dp_register_mst_connector,
Dave Airlie0e32b392014-05-02 14:02:48 +1000538 .destroy_connector = intel_dp_destroy_mst_connector,
539 .hotplug = intel_dp_mst_hotplug,
540};
541
542static struct intel_dp_mst_encoder *
543intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe)
544{
545 struct intel_dp_mst_encoder *intel_mst;
546 struct intel_encoder *intel_encoder;
547 struct drm_device *dev = intel_dig_port->base.base.dev;
548
549 intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL);
550
551 if (!intel_mst)
552 return NULL;
553
554 intel_mst->pipe = pipe;
555 intel_encoder = &intel_mst->base;
556 intel_mst->primary = intel_dig_port;
557
558 drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs,
Ville Syrjälä13a3d912015-12-09 16:20:18 +0200559 DRM_MODE_ENCODER_DPMST, NULL);
Dave Airlie0e32b392014-05-02 14:02:48 +1000560
561 intel_encoder->type = INTEL_OUTPUT_DP_MST;
562 intel_encoder->crtc_mask = 0x7;
563 intel_encoder->cloneable = 0;
564
565 intel_encoder->compute_config = intel_dp_mst_compute_config;
566 intel_encoder->disable = intel_mst_disable_dp;
567 intel_encoder->post_disable = intel_mst_post_disable_dp;
568 intel_encoder->pre_enable = intel_mst_pre_enable_dp;
569 intel_encoder->enable = intel_mst_enable_dp;
570 intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state;
571 intel_encoder->get_config = intel_dp_mst_enc_get_config;
572
573 return intel_mst;
574
575}
576
577static bool
578intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port)
579{
580 int i;
581 struct intel_dp *intel_dp = &intel_dig_port->dp;
582
583 for (i = PIPE_A; i <= PIPE_C; i++)
584 intel_dp->mst_encoders[i] = intel_dp_create_fake_mst_encoder(intel_dig_port, i);
585 return true;
586}
587
588int
589intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id)
590{
591 struct intel_dp *intel_dp = &intel_dig_port->dp;
592 struct drm_device *dev = intel_dig_port->base.base.dev;
593 int ret;
594
595 intel_dp->can_mst = true;
596 intel_dp->mst_mgr.cbs = &mst_cbs;
597
598 /* create encoders */
599 intel_dp_create_fake_mst_encoders(intel_dig_port);
600 ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev->dev, &intel_dp->aux, 16, 3, conn_base_id);
601 if (ret) {
602 intel_dp->can_mst = false;
603 return ret;
604 }
605 return 0;
606}
607
608void
609intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port)
610{
611 struct intel_dp *intel_dp = &intel_dig_port->dp;
612
613 if (!intel_dp->can_mst)
614 return;
615
616 drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr);
617 /* encoders will get killed by normal cleanup */
618}