2 * Copyright © 2008 Intel Corporation
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:
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
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
26 #include <drm/drm_atomic_helper.h>
27 #include <drm/drm_edid.h>
28 #include <drm/drm_probe_helper.h>
31 #include "intel_atomic.h"
32 #include "intel_audio.h"
33 #include "intel_connector.h"
34 #include "intel_ddi.h"
35 #include "intel_display_types.h"
37 #include "intel_dp_mst.h"
38 #include "intel_dpio_phy.h"
40 static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
41 struct intel_crtc_state *crtc_state,
42 struct drm_connector_state *conn_state,
43 struct link_config_limits *limits)
45 struct drm_atomic_state *state = crtc_state->uapi.state;
46 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
47 struct intel_dp *intel_dp = &intel_mst->primary->dp;
48 struct intel_connector *connector =
49 to_intel_connector(conn_state->connector);
50 struct drm_i915_private *i915 = to_i915(connector->base.dev);
51 const struct drm_display_mode *adjusted_mode =
52 &crtc_state->hw.adjusted_mode;
53 bool constant_n = drm_dp_has_quirk(&intel_dp->desc, 0,
54 DP_DPCD_QUIRK_CONSTANT_N);
55 int bpp, slots = -EINVAL;
57 crtc_state->lane_count = limits->max_lane_count;
58 crtc_state->port_clock = limits->max_clock;
60 for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) {
61 crtc_state->pipe_bpp = bpp;
63 crtc_state->pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock,
67 slots = drm_dp_atomic_find_vcpi_slots(state, &intel_dp->mst_mgr,
70 if (slots == -EDEADLK)
77 drm_dbg_kms(&i915->drm, "failed finding vcpi slots:%d\n",
82 intel_link_compute_m_n(crtc_state->pipe_bpp,
83 crtc_state->lane_count,
84 adjusted_mode->crtc_clock,
85 crtc_state->port_clock,
87 constant_n, crtc_state->fec_enable);
88 crtc_state->dp_m_n.tu = slots;
93 static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
94 struct intel_crtc_state *pipe_config,
95 struct drm_connector_state *conn_state)
97 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
98 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
99 struct intel_dp *intel_dp = &intel_mst->primary->dp;
100 struct intel_connector *connector =
101 to_intel_connector(conn_state->connector);
102 struct intel_digital_connector_state *intel_conn_state =
103 to_intel_digital_connector_state(conn_state);
104 const struct drm_display_mode *adjusted_mode =
105 &pipe_config->hw.adjusted_mode;
106 struct link_config_limits limits;
109 if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
112 pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
113 pipe_config->has_pch_encoder = false;
115 if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
116 pipe_config->has_audio = connector->port->has_audio;
118 pipe_config->has_audio =
119 intel_conn_state->force_audio == HDMI_AUDIO_ON;
122 * for MST we always configure max link bw - the spec doesn't
123 * seem to suggest we should do otherwise.
126 limits.max_clock = intel_dp_max_link_rate(intel_dp);
128 limits.min_lane_count =
129 limits.max_lane_count = intel_dp_max_lane_count(intel_dp);
131 limits.min_bpp = intel_dp_min_bpp(pipe_config);
133 * FIXME: If all the streams can't fit into the link with
134 * their current pipe_bpp we should reduce pipe_bpp across
135 * the board until things start to fit. Until then we
136 * limit to <= 8bpc since that's what was hardcoded for all
137 * MST streams previously. This hack should be removed once
138 * we have the proper retry logic in place.
140 limits.max_bpp = min(pipe_config->pipe_bpp, 24);
142 intel_dp_adjust_compliance_config(intel_dp, pipe_config, &limits);
144 ret = intel_dp_mst_compute_link_config(encoder, pipe_config,
145 conn_state, &limits);
149 pipe_config->limited_color_range =
150 intel_dp_limited_color_range(pipe_config, conn_state);
152 if (IS_GEN9_LP(dev_priv))
153 pipe_config->lane_lat_optim_mask =
154 bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
156 intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
162 * Iterate over all connectors and return a mask of
163 * all CPU transcoders streaming over the same DP link.
166 intel_dp_mst_transcoder_mask(struct intel_atomic_state *state,
167 struct intel_dp *mst_port)
169 struct drm_i915_private *dev_priv = to_i915(state->base.dev);
170 const struct intel_digital_connector_state *conn_state;
171 struct intel_connector *connector;
175 if (INTEL_GEN(dev_priv) < 12)
178 for_each_new_intel_connector_in_state(state, connector, conn_state, i) {
179 const struct intel_crtc_state *crtc_state;
180 struct intel_crtc *crtc;
182 if (connector->mst_port != mst_port || !conn_state->base.crtc)
185 crtc = to_intel_crtc(conn_state->base.crtc);
186 crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
188 if (!crtc_state->hw.active)
191 transcoders |= BIT(crtc_state->cpu_transcoder);
197 static int intel_dp_mst_compute_config_late(struct intel_encoder *encoder,
198 struct intel_crtc_state *crtc_state,
199 struct drm_connector_state *conn_state)
201 struct intel_atomic_state *state = to_intel_atomic_state(conn_state->state);
202 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
203 struct intel_dp *intel_dp = &intel_mst->primary->dp;
205 /* lowest numbered transcoder will be designated master */
206 crtc_state->mst_master_transcoder =
207 ffs(intel_dp_mst_transcoder_mask(state, intel_dp)) - 1;
213 * If one of the connectors in a MST stream needs a modeset, mark all CRTCs
214 * that shares the same MST stream as mode changed,
215 * intel_modeset_pipe_config()+intel_crtc_check_fastset() will take care to do
216 * a fastset when possible.
219 intel_dp_mst_atomic_master_trans_check(struct intel_connector *connector,
220 struct intel_atomic_state *state)
222 struct drm_i915_private *dev_priv = to_i915(state->base.dev);
223 struct drm_connector_list_iter connector_list_iter;
224 struct intel_connector *connector_iter;
226 if (INTEL_GEN(dev_priv) < 12)
229 if (!intel_connector_needs_modeset(state, &connector->base))
232 drm_connector_list_iter_begin(&dev_priv->drm, &connector_list_iter);
233 for_each_intel_connector_iter(connector_iter, &connector_list_iter) {
234 struct intel_digital_connector_state *conn_iter_state;
235 struct intel_crtc_state *crtc_state;
236 struct intel_crtc *crtc;
239 if (connector_iter->mst_port != connector->mst_port ||
240 connector_iter == connector)
243 conn_iter_state = intel_atomic_get_digital_connector_state(state,
245 if (IS_ERR(conn_iter_state)) {
246 drm_connector_list_iter_end(&connector_list_iter);
247 return PTR_ERR(conn_iter_state);
250 if (!conn_iter_state->base.crtc)
253 crtc = to_intel_crtc(conn_iter_state->base.crtc);
254 crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
255 if (IS_ERR(crtc_state)) {
256 drm_connector_list_iter_end(&connector_list_iter);
257 return PTR_ERR(crtc_state);
260 ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
262 drm_connector_list_iter_end(&connector_list_iter);
265 crtc_state->uapi.mode_changed = true;
267 drm_connector_list_iter_end(&connector_list_iter);
273 intel_dp_mst_atomic_check(struct drm_connector *connector,
274 struct drm_atomic_state *_state)
276 struct intel_atomic_state *state = to_intel_atomic_state(_state);
277 struct drm_connector_state *new_conn_state =
278 drm_atomic_get_new_connector_state(&state->base, connector);
279 struct drm_connector_state *old_conn_state =
280 drm_atomic_get_old_connector_state(&state->base, connector);
281 struct intel_connector *intel_connector =
282 to_intel_connector(connector);
283 struct drm_crtc *new_crtc = new_conn_state->crtc;
284 struct drm_dp_mst_topology_mgr *mgr;
287 ret = intel_digital_connector_atomic_check(connector, &state->base);
291 ret = intel_dp_mst_atomic_master_trans_check(intel_connector, state);
295 if (!old_conn_state->crtc)
298 /* We only want to free VCPI if this state disables the CRTC on this
302 struct intel_crtc *intel_crtc = to_intel_crtc(new_crtc);
303 struct intel_crtc_state *crtc_state =
304 intel_atomic_get_new_crtc_state(state, intel_crtc);
307 !drm_atomic_crtc_needs_modeset(&crtc_state->uapi) ||
308 crtc_state->uapi.enable)
312 mgr = &enc_to_mst(to_intel_encoder(old_conn_state->best_encoder))->primary->dp.mst_mgr;
313 ret = drm_dp_atomic_release_vcpi_slots(&state->base, mgr,
314 intel_connector->port);
319 static void intel_mst_disable_dp(struct intel_atomic_state *state,
320 struct intel_encoder *encoder,
321 const struct intel_crtc_state *old_crtc_state,
322 const struct drm_connector_state *old_conn_state)
324 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
325 struct intel_digital_port *intel_dig_port = intel_mst->primary;
326 struct intel_dp *intel_dp = &intel_dig_port->dp;
327 struct intel_connector *connector =
328 to_intel_connector(old_conn_state->connector);
329 struct drm_i915_private *i915 = to_i915(connector->base.dev);
332 drm_dbg_kms(&i915->drm, "active links %d\n",
333 intel_dp->active_mst_links);
335 drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port);
337 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
339 drm_dbg_kms(&i915->drm, "failed to update payload %d\n", ret);
341 if (old_crtc_state->has_audio)
342 intel_audio_codec_disable(encoder,
343 old_crtc_state, old_conn_state);
346 static void intel_mst_post_disable_dp(struct intel_atomic_state *state,
347 struct intel_encoder *encoder,
348 const struct intel_crtc_state *old_crtc_state,
349 const struct drm_connector_state *old_conn_state)
351 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
352 struct intel_digital_port *intel_dig_port = intel_mst->primary;
353 struct intel_dp *intel_dp = &intel_dig_port->dp;
354 struct intel_connector *connector =
355 to_intel_connector(old_conn_state->connector);
356 struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
357 bool last_mst_stream;
360 intel_dp->active_mst_links--;
361 last_mst_stream = intel_dp->active_mst_links == 0;
362 drm_WARN_ON(&dev_priv->drm,
363 INTEL_GEN(dev_priv) >= 12 && last_mst_stream &&
364 !intel_dp_mst_is_master_trans(old_crtc_state));
366 intel_crtc_vblank_off(old_crtc_state);
368 intel_disable_pipe(old_crtc_state);
370 drm_dp_update_payload_part2(&intel_dp->mst_mgr);
372 val = intel_de_read(dev_priv,
373 TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder));
374 val &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
375 intel_de_write(dev_priv,
376 TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder),
379 if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status,
380 DP_TP_STATUS_ACT_SENT, 1))
381 drm_err(&dev_priv->drm,
382 "Timed out waiting for ACT sent when disabling\n");
383 drm_dp_check_act_status(&intel_dp->mst_mgr);
385 drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port);
387 intel_ddi_disable_transcoder_func(old_crtc_state);
389 if (INTEL_GEN(dev_priv) >= 9)
390 skl_scaler_disable(old_crtc_state);
392 ilk_pfit_disable(old_crtc_state);
395 * Power down mst path before disabling the port, otherwise we end
396 * up getting interrupts from the sink upon detecting link loss.
398 drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port,
401 * From TGL spec: "If multi-stream slave transcoder: Configure
402 * Transcoder Clock Select to direct no clock to the transcoder"
404 * From older GENs spec: "Configure Transcoder Clock Select to direct
405 * no clock to the transcoder"
407 if (INTEL_GEN(dev_priv) < 12 || !last_mst_stream)
408 intel_ddi_disable_pipe_clock(old_crtc_state);
411 intel_mst->connector = NULL;
413 intel_dig_port->base.post_disable(state, &intel_dig_port->base,
414 old_crtc_state, NULL);
416 drm_dbg_kms(&dev_priv->drm, "active links %d\n",
417 intel_dp->active_mst_links);
420 static void intel_mst_pre_pll_enable_dp(struct intel_atomic_state *state,
421 struct intel_encoder *encoder,
422 const struct intel_crtc_state *pipe_config,
423 const struct drm_connector_state *conn_state)
425 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
426 struct intel_digital_port *intel_dig_port = intel_mst->primary;
427 struct intel_dp *intel_dp = &intel_dig_port->dp;
429 if (intel_dp->active_mst_links == 0)
430 intel_dig_port->base.pre_pll_enable(state, &intel_dig_port->base,
434 static void intel_mst_pre_enable_dp(struct intel_atomic_state *state,
435 struct intel_encoder *encoder,
436 const struct intel_crtc_state *pipe_config,
437 const struct drm_connector_state *conn_state)
439 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
440 struct intel_digital_port *intel_dig_port = intel_mst->primary;
441 struct intel_dp *intel_dp = &intel_dig_port->dp;
442 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
443 struct intel_connector *connector =
444 to_intel_connector(conn_state->connector);
447 bool first_mst_stream;
449 /* MST encoders are bound to a crtc, not to a connector,
450 * force the mapping here for get_hw_state.
452 connector->encoder = encoder;
453 intel_mst->connector = connector;
454 first_mst_stream = intel_dp->active_mst_links == 0;
455 drm_WARN_ON(&dev_priv->drm,
456 INTEL_GEN(dev_priv) >= 12 && first_mst_stream &&
457 !intel_dp_mst_is_master_trans(pipe_config));
459 drm_dbg_kms(&dev_priv->drm, "active links %d\n",
460 intel_dp->active_mst_links);
462 if (first_mst_stream)
463 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
465 drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, true);
467 if (first_mst_stream)
468 intel_dig_port->base.pre_enable(state, &intel_dig_port->base,
471 ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr,
474 pipe_config->dp_m_n.tu);
476 drm_err(&dev_priv->drm, "failed to allocate vcpi\n");
478 intel_dp->active_mst_links++;
479 temp = intel_de_read(dev_priv, intel_dp->regs.dp_tp_status);
480 intel_de_write(dev_priv, intel_dp->regs.dp_tp_status, temp);
482 ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
485 * Before Gen 12 this is not done as part of
486 * intel_dig_port->base.pre_enable() and should be done here. For
487 * Gen 12+ the step in which this should be done is different for the
488 * first MST stream, so it's done on the DDI for the first stream and
489 * here for the following ones.
491 if (INTEL_GEN(dev_priv) < 12 || !first_mst_stream)
492 intel_ddi_enable_pipe_clock(encoder, pipe_config);
494 intel_ddi_set_dp_msa(pipe_config, conn_state);
496 intel_dp_set_m_n(pipe_config, M1_N1);
499 static void intel_mst_enable_dp(struct intel_atomic_state *state,
500 struct intel_encoder *encoder,
501 const struct intel_crtc_state *pipe_config,
502 const struct drm_connector_state *conn_state)
504 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
505 struct intel_digital_port *intel_dig_port = intel_mst->primary;
506 struct intel_dp *intel_dp = &intel_dig_port->dp;
507 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
509 drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder);
511 intel_ddi_enable_transcoder_func(encoder, pipe_config);
513 drm_dbg_kms(&dev_priv->drm, "active links %d\n",
514 intel_dp->active_mst_links);
516 if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status,
517 DP_TP_STATUS_ACT_SENT, 1))
518 drm_err(&dev_priv->drm, "Timed out waiting for ACT sent\n");
520 drm_dp_check_act_status(&intel_dp->mst_mgr);
522 drm_dp_update_payload_part2(&intel_dp->mst_mgr);
524 intel_enable_pipe(pipe_config);
526 intel_crtc_vblank_on(pipe_config);
528 if (pipe_config->has_audio)
529 intel_audio_codec_enable(encoder, pipe_config, conn_state);
532 static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder,
535 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
536 *pipe = intel_mst->pipe;
537 if (intel_mst->connector)
542 static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
543 struct intel_crtc_state *pipe_config)
545 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
546 struct intel_digital_port *intel_dig_port = intel_mst->primary;
548 intel_ddi_get_config(&intel_dig_port->base, pipe_config);
551 static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector)
553 struct intel_connector *intel_connector = to_intel_connector(connector);
554 struct intel_dp *intel_dp = intel_connector->mst_port;
558 if (drm_connector_is_unregistered(connector))
559 return intel_connector_update_modes(connector, NULL);
561 edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port);
562 ret = intel_connector_update_modes(connector, edid);
569 intel_dp_mst_connector_late_register(struct drm_connector *connector)
571 struct intel_connector *intel_connector = to_intel_connector(connector);
574 ret = drm_dp_mst_connector_late_register(connector,
575 intel_connector->port);
579 ret = intel_connector_register(connector);
581 drm_dp_mst_connector_early_unregister(connector,
582 intel_connector->port);
588 intel_dp_mst_connector_early_unregister(struct drm_connector *connector)
590 struct intel_connector *intel_connector = to_intel_connector(connector);
592 intel_connector_unregister(connector);
593 drm_dp_mst_connector_early_unregister(connector,
594 intel_connector->port);
597 static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
598 .fill_modes = drm_helper_probe_single_connector_modes,
599 .atomic_get_property = intel_digital_connector_atomic_get_property,
600 .atomic_set_property = intel_digital_connector_atomic_set_property,
601 .late_register = intel_dp_mst_connector_late_register,
602 .early_unregister = intel_dp_mst_connector_early_unregister,
603 .destroy = intel_connector_destroy,
604 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
605 .atomic_duplicate_state = intel_digital_connector_duplicate_state,
608 static int intel_dp_mst_get_modes(struct drm_connector *connector)
610 return intel_dp_mst_get_ddc_modes(connector);
613 static enum drm_mode_status
614 intel_dp_mst_mode_valid(struct drm_connector *connector,
615 struct drm_display_mode *mode)
617 struct drm_i915_private *dev_priv = to_i915(connector->dev);
618 struct intel_connector *intel_connector = to_intel_connector(connector);
619 struct intel_dp *intel_dp = intel_connector->mst_port;
620 int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
621 int max_rate, mode_rate, max_lanes, max_link_clock;
623 if (drm_connector_is_unregistered(connector))
626 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
627 return MODE_NO_DBLESCAN;
629 max_link_clock = intel_dp_max_link_rate(intel_dp);
630 max_lanes = intel_dp_max_lane_count(intel_dp);
632 max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes);
633 mode_rate = intel_dp_link_required(mode->clock, 18);
635 /* TODO - validate mode against available PBN for link */
636 if (mode->clock < 10000)
637 return MODE_CLOCK_LOW;
639 if (mode->flags & DRM_MODE_FLAG_DBLCLK)
640 return MODE_H_ILLEGAL;
642 if (mode_rate > max_rate || mode->clock > max_dotclk)
643 return MODE_CLOCK_HIGH;
645 return intel_mode_valid_max_plane_size(dev_priv, mode);
648 static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector,
649 struct drm_connector_state *state)
651 struct intel_connector *intel_connector = to_intel_connector(connector);
652 struct intel_dp *intel_dp = intel_connector->mst_port;
653 struct intel_crtc *crtc = to_intel_crtc(state->crtc);
655 return &intel_dp->mst_encoders[crtc->pipe]->base.base;
659 intel_dp_mst_detect(struct drm_connector *connector,
660 struct drm_modeset_acquire_ctx *ctx, bool force)
662 struct intel_connector *intel_connector = to_intel_connector(connector);
663 struct intel_dp *intel_dp = intel_connector->mst_port;
665 if (drm_connector_is_unregistered(connector))
666 return connector_status_disconnected;
668 return drm_dp_mst_detect_port(connector, ctx, &intel_dp->mst_mgr,
669 intel_connector->port);
672 static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = {
673 .get_modes = intel_dp_mst_get_modes,
674 .mode_valid = intel_dp_mst_mode_valid,
675 .atomic_best_encoder = intel_mst_atomic_best_encoder,
676 .atomic_check = intel_dp_mst_atomic_check,
677 .detect_ctx = intel_dp_mst_detect,
680 static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder)
682 struct intel_dp_mst_encoder *intel_mst = enc_to_mst(to_intel_encoder(encoder));
684 drm_encoder_cleanup(encoder);
688 static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = {
689 .destroy = intel_dp_mst_encoder_destroy,
692 static bool intel_dp_mst_get_hw_state(struct intel_connector *connector)
694 if (intel_attached_encoder(connector) && connector->base.state->crtc) {
696 if (!intel_attached_encoder(connector)->get_hw_state(intel_attached_encoder(connector), &pipe))
703 static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, const char *pathprop)
705 struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
706 struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
707 struct drm_device *dev = intel_dig_port->base.base.dev;
708 struct drm_i915_private *dev_priv = to_i915(dev);
709 struct intel_connector *intel_connector;
710 struct drm_connector *connector;
714 intel_connector = intel_connector_alloc();
715 if (!intel_connector)
718 intel_connector->get_hw_state = intel_dp_mst_get_hw_state;
719 intel_connector->mst_port = intel_dp;
720 intel_connector->port = port;
721 drm_dp_mst_get_port_malloc(port);
723 connector = &intel_connector->base;
724 ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs,
725 DRM_MODE_CONNECTOR_DisplayPort);
727 intel_connector_free(intel_connector);
731 drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs);
733 for_each_pipe(dev_priv, pipe) {
734 struct drm_encoder *enc =
735 &intel_dp->mst_encoders[pipe]->base.base;
737 ret = drm_connector_attach_encoder(&intel_connector->base, enc);
742 drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
743 drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);
745 ret = drm_connector_set_path_property(connector, pathprop);
749 intel_attach_force_audio_property(connector);
750 intel_attach_broadcast_rgb_property(connector);
753 * Reuse the prop from the SST connector because we're
754 * not allowed to create new props after device registration.
756 connector->max_bpc_property =
757 intel_dp->attached_connector->base.max_bpc_property;
758 if (connector->max_bpc_property)
759 drm_connector_attach_max_bpc_property(connector, 6, 12);
764 drm_connector_cleanup(connector);
768 static const struct drm_dp_mst_topology_cbs mst_cbs = {
769 .add_connector = intel_dp_add_mst_connector,
772 static struct intel_dp_mst_encoder *
773 intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe)
775 struct intel_dp_mst_encoder *intel_mst;
776 struct intel_encoder *intel_encoder;
777 struct drm_device *dev = intel_dig_port->base.base.dev;
779 intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL);
784 intel_mst->pipe = pipe;
785 intel_encoder = &intel_mst->base;
786 intel_mst->primary = intel_dig_port;
788 drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs,
789 DRM_MODE_ENCODER_DPMST, "DP-MST %c", pipe_name(pipe));
791 intel_encoder->type = INTEL_OUTPUT_DP_MST;
792 intel_encoder->power_domain = intel_dig_port->base.power_domain;
793 intel_encoder->port = intel_dig_port->base.port;
794 intel_encoder->cloneable = 0;
796 * This is wrong, but broken userspace uses the intersection
797 * of possible_crtcs of all the encoders of a given connector
798 * to figure out which crtcs can drive said connector. What
799 * should be used instead is the union of possible_crtcs.
800 * To keep such userspace functioning we must misconfigure
801 * this to make sure the intersection is not empty :(
803 intel_encoder->pipe_mask = ~0;
805 intel_encoder->compute_config = intel_dp_mst_compute_config;
806 intel_encoder->compute_config_late = intel_dp_mst_compute_config_late;
807 intel_encoder->disable = intel_mst_disable_dp;
808 intel_encoder->post_disable = intel_mst_post_disable_dp;
809 intel_encoder->pre_pll_enable = intel_mst_pre_pll_enable_dp;
810 intel_encoder->pre_enable = intel_mst_pre_enable_dp;
811 intel_encoder->enable = intel_mst_enable_dp;
812 intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state;
813 intel_encoder->get_config = intel_dp_mst_enc_get_config;
820 intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port)
822 struct intel_dp *intel_dp = &intel_dig_port->dp;
823 struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
826 for_each_pipe(dev_priv, pipe)
827 intel_dp->mst_encoders[pipe] = intel_dp_create_fake_mst_encoder(intel_dig_port, pipe);
832 intel_dp_mst_encoder_active_links(struct intel_digital_port *intel_dig_port)
834 return intel_dig_port->dp.active_mst_links;
838 intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id)
840 struct drm_i915_private *i915 = to_i915(intel_dig_port->base.base.dev);
841 struct intel_dp *intel_dp = &intel_dig_port->dp;
842 enum port port = intel_dig_port->base.port;
845 if (!HAS_DP_MST(i915) || intel_dp_is_edp(intel_dp))
848 if (INTEL_GEN(i915) < 12 && port == PORT_A)
851 if (INTEL_GEN(i915) < 11 && port == PORT_E)
854 intel_dp->mst_mgr.cbs = &mst_cbs;
856 /* create encoders */
857 intel_dp_create_fake_mst_encoders(intel_dig_port);
858 ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, &i915->drm,
859 &intel_dp->aux, 16, 3, conn_base_id);
863 intel_dp->can_mst = true;
869 intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port)
871 struct intel_dp *intel_dp = &intel_dig_port->dp;
873 if (!intel_dp->can_mst)
876 drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr);
877 /* encoders will get killed by normal cleanup */
880 bool intel_dp_mst_is_master_trans(const struct intel_crtc_state *crtc_state)
882 return crtc_state->mst_master_transcoder == crtc_state->cpu_transcoder;
885 bool intel_dp_mst_is_slave_trans(const struct intel_crtc_state *crtc_state)
887 return crtc_state->mst_master_transcoder != INVALID_TRANSCODER &&
888 crtc_state->mst_master_transcoder != crtc_state->cpu_transcoder;