Subversion Repositories Kolibri OS

Rev

Rev 6937 | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  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_atomic_helper.h>
  30. #include <drm/drm_crtc_helper.h>
  31. #include <drm/drm_edid.h>
  32.  
  33. static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
  34.                                         struct intel_crtc_state *pipe_config)
  35. {
  36.         struct drm_device *dev = encoder->base.dev;
  37.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
  38.         struct intel_digital_port *intel_dig_port = intel_mst->primary;
  39.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  40.         struct drm_atomic_state *state;
  41.         int bpp, i;
  42.         int lane_count, slots;
  43.         const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
  44.         struct drm_connector *drm_connector;
  45.         struct intel_connector *connector, *found = NULL;
  46.         struct drm_connector_state *connector_state;
  47.         int mst_pbn;
  48.  
  49.         pipe_config->dp_encoder_is_mst = true;
  50.         pipe_config->has_pch_encoder = false;
  51.         pipe_config->has_dp_encoder = true;
  52.         bpp = 24;
  53.         /*
  54.          * for MST we always configure max link bw - the spec doesn't
  55.          * seem to suggest we should do otherwise.
  56.          */
  57.         lane_count = drm_dp_max_lane_count(intel_dp->dpcd);
  58.  
  59.  
  60.         pipe_config->lane_count = lane_count;
  61.  
  62.         pipe_config->pipe_bpp = 24;
  63.         pipe_config->port_clock = intel_dp_max_link_rate(intel_dp);
  64.  
  65.         state = pipe_config->base.state;
  66.  
  67.         for_each_connector_in_state(state, drm_connector, connector_state, i) {
  68.                 connector = to_intel_connector(drm_connector);
  69.  
  70.                 if (connector_state->best_encoder == &encoder->base) {
  71.                         found = connector;
  72.                         break;
  73.                 }
  74.         }
  75.  
  76.         if (!found) {
  77.                 DRM_ERROR("can't find connector\n");
  78.                 return false;
  79.         }
  80.  
  81.         mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
  82.  
  83.         pipe_config->pbn = mst_pbn;
  84.         slots = drm_dp_find_vcpi_slots(&intel_dp->mst_mgr, mst_pbn);
  85.  
  86.         intel_link_compute_m_n(bpp, lane_count,
  87.                                adjusted_mode->crtc_clock,
  88.                                pipe_config->port_clock,
  89.                                &pipe_config->dp_m_n);
  90.  
  91.         pipe_config->dp_m_n.tu = slots;
  92.  
  93.         if (IS_HASWELL(dev) || IS_BROADWELL(dev))
  94.                 hsw_dp_set_ddi_pll_sel(pipe_config);
  95.  
  96.         return true;
  97.  
  98. }
  99.  
  100. static void intel_mst_disable_dp(struct intel_encoder *encoder)
  101. {
  102.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
  103.         struct intel_digital_port *intel_dig_port = intel_mst->primary;
  104.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  105.         int ret;
  106.  
  107.         DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
  108.  
  109.         drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, intel_mst->port);
  110.  
  111.         ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
  112.         if (ret) {
  113.                 DRM_ERROR("failed to update payload %d\n", ret);
  114.         }
  115. }
  116.  
  117. static void intel_mst_post_disable_dp(struct intel_encoder *encoder)
  118. {
  119.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
  120.         struct intel_digital_port *intel_dig_port = intel_mst->primary;
  121.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  122.  
  123.         DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
  124.  
  125.         /* this can fail */
  126.         drm_dp_check_act_status(&intel_dp->mst_mgr);
  127.         /* and this can also fail */
  128.         drm_dp_update_payload_part2(&intel_dp->mst_mgr);
  129.  
  130.         drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, intel_mst->port);
  131.  
  132.         intel_dp->active_mst_links--;
  133.         intel_mst->port = NULL;
  134.         if (intel_dp->active_mst_links == 0) {
  135.                 intel_dig_port->base.post_disable(&intel_dig_port->base);
  136.                 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
  137.         }
  138. }
  139.  
  140. static void intel_mst_pre_enable_dp(struct intel_encoder *encoder)
  141. {
  142.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
  143.         struct intel_digital_port *intel_dig_port = intel_mst->primary;
  144.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  145.         struct drm_device *dev = encoder->base.dev;
  146.         struct drm_i915_private *dev_priv = dev->dev_private;
  147.         enum port port = intel_dig_port->port;
  148.         int ret;
  149.         uint32_t temp;
  150.         struct intel_connector *found = NULL, *connector;
  151.         int slots;
  152.         struct drm_crtc *crtc = encoder->base.crtc;
  153.         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
  154.  
  155.         for_each_intel_connector(dev, connector) {
  156.                 if (connector->base.state->best_encoder == &encoder->base) {
  157.                         found = connector;
  158.                         break;
  159.                 }
  160.         }
  161.  
  162.         if (!found) {
  163.                 DRM_ERROR("can't find connector\n");
  164.                 return;
  165.         }
  166.  
  167.         /* MST encoders are bound to a crtc, not to a connector,
  168.          * force the mapping here for get_hw_state.
  169.          */
  170.         found->encoder = encoder;
  171.  
  172.         DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
  173.         intel_mst->port = found->port;
  174.  
  175.         if (intel_dp->active_mst_links == 0) {
  176.                 intel_prepare_ddi_buffer(&intel_dig_port->base);
  177.  
  178.                 intel_ddi_clk_select(&intel_dig_port->base, intel_crtc->config);
  179.  
  180.                 intel_dp_set_link_params(intel_dp, intel_crtc->config);
  181.  
  182.                 intel_ddi_init_dp_buf_reg(&intel_dig_port->base);
  183.  
  184.                 intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
  185.  
  186.                 intel_dp_start_link_train(intel_dp);
  187.                 intel_dp_stop_link_train(intel_dp);
  188.         }
  189.  
  190.         ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr,
  191.                                        intel_mst->port,
  192.                                        intel_crtc->config->pbn, &slots);
  193.         if (ret == false) {
  194.                 DRM_ERROR("failed to allocate vcpi\n");
  195.                 return;
  196.         }
  197.  
  198.  
  199.         intel_dp->active_mst_links++;
  200.         temp = I915_READ(DP_TP_STATUS(port));
  201.         I915_WRITE(DP_TP_STATUS(port), temp);
  202.  
  203.         ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
  204. }
  205.  
  206. static void intel_mst_enable_dp(struct intel_encoder *encoder)
  207. {
  208.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
  209.         struct intel_digital_port *intel_dig_port = intel_mst->primary;
  210.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  211.         struct drm_device *dev = intel_dig_port->base.base.dev;
  212.         struct drm_i915_private *dev_priv = dev->dev_private;
  213.         enum port port = intel_dig_port->port;
  214.         int ret;
  215.  
  216.         DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
  217.  
  218.         if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_ACT_SENT),
  219.                      1))
  220.                 DRM_ERROR("Timed out waiting for ACT sent\n");
  221.  
  222.         ret = drm_dp_check_act_status(&intel_dp->mst_mgr);
  223.  
  224.         ret = drm_dp_update_payload_part2(&intel_dp->mst_mgr);
  225. }
  226.  
  227. static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder,
  228.                                       enum pipe *pipe)
  229. {
  230.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
  231.         *pipe = intel_mst->pipe;
  232.         if (intel_mst->port)
  233.                 return true;
  234.         return false;
  235. }
  236.  
  237. static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
  238.                                         struct intel_crtc_state *pipe_config)
  239. {
  240.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
  241.         struct intel_digital_port *intel_dig_port = intel_mst->primary;
  242.         struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
  243.         struct drm_device *dev = encoder->base.dev;
  244.         struct drm_i915_private *dev_priv = dev->dev_private;
  245.         enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
  246.         u32 temp, flags = 0;
  247.  
  248.         pipe_config->has_dp_encoder = true;
  249.  
  250.         temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
  251.         if (temp & TRANS_DDI_PHSYNC)
  252.                 flags |= DRM_MODE_FLAG_PHSYNC;
  253.         else
  254.                 flags |= DRM_MODE_FLAG_NHSYNC;
  255.         if (temp & TRANS_DDI_PVSYNC)
  256.                 flags |= DRM_MODE_FLAG_PVSYNC;
  257.         else
  258.                 flags |= DRM_MODE_FLAG_NVSYNC;
  259.  
  260.         switch (temp & TRANS_DDI_BPC_MASK) {
  261.         case TRANS_DDI_BPC_6:
  262.                 pipe_config->pipe_bpp = 18;
  263.                 break;
  264.         case TRANS_DDI_BPC_8:
  265.                 pipe_config->pipe_bpp = 24;
  266.                 break;
  267.         case TRANS_DDI_BPC_10:
  268.                 pipe_config->pipe_bpp = 30;
  269.                 break;
  270.         case TRANS_DDI_BPC_12:
  271.                 pipe_config->pipe_bpp = 36;
  272.                 break;
  273.         default:
  274.                 break;
  275.         }
  276.         pipe_config->base.adjusted_mode.flags |= flags;
  277.  
  278.         pipe_config->lane_count =
  279.                 ((temp & DDI_PORT_WIDTH_MASK) >> DDI_PORT_WIDTH_SHIFT) + 1;
  280.  
  281.         intel_dp_get_m_n(crtc, pipe_config);
  282.  
  283.         intel_ddi_clock_get(&intel_dig_port->base, pipe_config);
  284. }
  285.  
  286. static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector)
  287. {
  288.         struct intel_connector *intel_connector = to_intel_connector(connector);
  289.         struct intel_dp *intel_dp = intel_connector->mst_port;
  290.         struct edid *edid;
  291.         int ret;
  292.  
  293.         edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port);
  294.         if (!edid)
  295.                 return 0;
  296.  
  297.         ret = intel_connector_update_modes(connector, edid);
  298.         kfree(edid);
  299.  
  300.         return ret;
  301. }
  302.  
  303. static enum drm_connector_status
  304. intel_dp_mst_detect(struct drm_connector *connector, bool force)
  305. {
  306.         struct intel_connector *intel_connector = to_intel_connector(connector);
  307.         struct intel_dp *intel_dp = intel_connector->mst_port;
  308.  
  309.         return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, intel_connector->port);
  310. }
  311.  
  312. static int
  313. intel_dp_mst_set_property(struct drm_connector *connector,
  314.                           struct drm_property *property,
  315.                           uint64_t val)
  316. {
  317.         return 0;
  318. }
  319.  
  320. static void
  321. intel_dp_mst_connector_destroy(struct drm_connector *connector)
  322. {
  323.         struct intel_connector *intel_connector = to_intel_connector(connector);
  324.  
  325.         if (!IS_ERR_OR_NULL(intel_connector->edid))
  326.                 kfree(intel_connector->edid);
  327.  
  328.         drm_connector_cleanup(connector);
  329.         kfree(connector);
  330. }
  331.  
  332. static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
  333.         .dpms = drm_atomic_helper_connector_dpms,
  334.         .detect = intel_dp_mst_detect,
  335.         .fill_modes = drm_helper_probe_single_connector_modes,
  336.         .set_property = intel_dp_mst_set_property,
  337.         .atomic_get_property = intel_connector_atomic_get_property,
  338.         .destroy = intel_dp_mst_connector_destroy,
  339.         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
  340.         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
  341. };
  342.  
  343. static int intel_dp_mst_get_modes(struct drm_connector *connector)
  344. {
  345.         return intel_dp_mst_get_ddc_modes(connector);
  346. }
  347.  
  348. static enum drm_mode_status
  349. intel_dp_mst_mode_valid(struct drm_connector *connector,
  350.                         struct drm_display_mode *mode)
  351. {
  352.         int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
  353.  
  354.         /* TODO - validate mode against available PBN for link */
  355.         if (mode->clock < 10000)
  356.                 return MODE_CLOCK_LOW;
  357.  
  358.         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
  359.                 return MODE_H_ILLEGAL;
  360.  
  361.         if (mode->clock > max_dotclk)
  362.                 return MODE_CLOCK_HIGH;
  363.  
  364.         return MODE_OK;
  365. }
  366.  
  367. static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector,
  368.                                                          struct drm_connector_state *state)
  369. {
  370.         struct intel_connector *intel_connector = to_intel_connector(connector);
  371.         struct intel_dp *intel_dp = intel_connector->mst_port;
  372.         struct intel_crtc *crtc = to_intel_crtc(state->crtc);
  373.  
  374.         return &intel_dp->mst_encoders[crtc->pipe]->base.base;
  375. }
  376.  
  377. static struct drm_encoder *intel_mst_best_encoder(struct drm_connector *connector)
  378. {
  379.         struct intel_connector *intel_connector = to_intel_connector(connector);
  380.         struct intel_dp *intel_dp = intel_connector->mst_port;
  381.         return &intel_dp->mst_encoders[0]->base.base;
  382. }
  383.  
  384. static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = {
  385.         .get_modes = intel_dp_mst_get_modes,
  386.         .mode_valid = intel_dp_mst_mode_valid,
  387.         .atomic_best_encoder = intel_mst_atomic_best_encoder,
  388.         .best_encoder = intel_mst_best_encoder,
  389. };
  390.  
  391. static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder)
  392. {
  393.         struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
  394.  
  395.         drm_encoder_cleanup(encoder);
  396.         kfree(intel_mst);
  397. }
  398.  
  399. static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = {
  400.         .destroy = intel_dp_mst_encoder_destroy,
  401. };
  402.  
  403. static bool intel_dp_mst_get_hw_state(struct intel_connector *connector)
  404. {
  405.         if (connector->encoder && connector->base.state->crtc) {
  406.                 enum pipe pipe;
  407.                 if (!connector->encoder->get_hw_state(connector->encoder, &pipe))
  408.                         return false;
  409.                 return true;
  410.         }
  411.         return false;
  412. }
  413.  
  414. static void intel_connector_add_to_fbdev(struct intel_connector *connector)
  415. {
  416. #ifdef CONFIG_DRM_FBDEV_EMULATION
  417.         struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
  418.  
  419.         if (dev_priv->fbdev)
  420.                 drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper,
  421.                                                 &connector->base);
  422. #endif
  423. }
  424.  
  425. static void intel_connector_remove_from_fbdev(struct intel_connector *connector)
  426. {
  427. #ifdef CONFIG_DRM_FBDEV_EMULATION
  428.         struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
  429.  
  430.         if (dev_priv->fbdev)
  431.                 drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper,
  432.                                                    &connector->base);
  433. #endif
  434. }
  435.  
  436. 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)
  437. {
  438.         struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
  439.         struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
  440.         struct drm_device *dev = intel_dig_port->base.base.dev;
  441.         struct intel_connector *intel_connector;
  442.         struct drm_connector *connector;
  443.         int i;
  444.  
  445.         intel_connector = intel_connector_alloc();
  446.         if (!intel_connector)
  447.                 return NULL;
  448.  
  449.         connector = &intel_connector->base;
  450.         drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort);
  451.         drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs);
  452.  
  453.         intel_connector->unregister = intel_connector_unregister;
  454.         intel_connector->get_hw_state = intel_dp_mst_get_hw_state;
  455.         intel_connector->mst_port = intel_dp;
  456.         intel_connector->port = port;
  457.  
  458.         for (i = PIPE_A; i <= PIPE_C; i++) {
  459.                 drm_mode_connector_attach_encoder(&intel_connector->base,
  460.                                                   &intel_dp->mst_encoders[i]->base.base);
  461.         }
  462.         intel_dp_add_properties(intel_dp, connector);
  463.  
  464.         drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
  465.         drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);
  466.  
  467.         drm_mode_connector_set_path_property(connector, pathprop);
  468.         return connector;
  469. }
  470.  
  471. static void intel_dp_register_mst_connector(struct drm_connector *connector)
  472. {
  473.         struct intel_connector *intel_connector = to_intel_connector(connector);
  474.         struct drm_device *dev = connector->dev;
  475.         drm_modeset_lock_all(dev);
  476.         intel_connector_add_to_fbdev(intel_connector);
  477.         drm_modeset_unlock_all(dev);
  478.         drm_connector_register(&intel_connector->base);
  479. }
  480.  
  481. static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
  482.                                            struct drm_connector *connector)
  483. {
  484.         struct intel_connector *intel_connector = to_intel_connector(connector);
  485.         struct drm_device *dev = connector->dev;
  486.  
  487.         intel_connector->unregister(intel_connector);
  488.  
  489.         /* need to nuke the connector */
  490.         drm_modeset_lock_all(dev);
  491.         if (connector->state->crtc) {
  492.                 struct drm_mode_set set;
  493.                 int ret;
  494.  
  495.                 memset(&set, 0, sizeof(set));
  496.                 set.crtc = connector->state->crtc,
  497.  
  498.                 ret = drm_atomic_helper_set_config(&set);
  499.  
  500.                 WARN(ret, "Disabling mst crtc failed with %i\n", ret);
  501.         }
  502.  
  503.         intel_connector_remove_from_fbdev(intel_connector);
  504.         drm_connector_cleanup(connector);
  505.         drm_modeset_unlock_all(dev);
  506.  
  507.         kfree(intel_connector);
  508.         DRM_DEBUG_KMS("\n");
  509. }
  510.  
  511. static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
  512. {
  513.         struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
  514.         struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
  515.         struct drm_device *dev = intel_dig_port->base.base.dev;
  516.  
  517.         drm_kms_helper_hotplug_event(dev);
  518. }
  519.  
  520. static const struct drm_dp_mst_topology_cbs mst_cbs = {
  521.         .add_connector = intel_dp_add_mst_connector,
  522.         .register_connector = intel_dp_register_mst_connector,
  523.         .destroy_connector = intel_dp_destroy_mst_connector,
  524.         .hotplug = intel_dp_mst_hotplug,
  525. };
  526.  
  527. static struct intel_dp_mst_encoder *
  528. intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe)
  529. {
  530.         struct intel_dp_mst_encoder *intel_mst;
  531.         struct intel_encoder *intel_encoder;
  532.         struct drm_device *dev = intel_dig_port->base.base.dev;
  533.  
  534.         intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL);
  535.  
  536.         if (!intel_mst)
  537.                 return NULL;
  538.  
  539.         intel_mst->pipe = pipe;
  540.         intel_encoder = &intel_mst->base;
  541.         intel_mst->primary = intel_dig_port;
  542.  
  543.         drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs,
  544.                          DRM_MODE_ENCODER_DPMST, NULL);
  545.  
  546.         intel_encoder->type = INTEL_OUTPUT_DP_MST;
  547.         intel_encoder->crtc_mask = 0x7;
  548.         intel_encoder->cloneable = 0;
  549.  
  550.         intel_encoder->compute_config = intel_dp_mst_compute_config;
  551.         intel_encoder->disable = intel_mst_disable_dp;
  552.         intel_encoder->post_disable = intel_mst_post_disable_dp;
  553.         intel_encoder->pre_enable = intel_mst_pre_enable_dp;
  554.         intel_encoder->enable = intel_mst_enable_dp;
  555.         intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state;
  556.         intel_encoder->get_config = intel_dp_mst_enc_get_config;
  557.  
  558.         return intel_mst;
  559.  
  560. }
  561.  
  562. static bool
  563. intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port)
  564. {
  565.         int i;
  566.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  567.  
  568.         for (i = PIPE_A; i <= PIPE_C; i++)
  569.                 intel_dp->mst_encoders[i] = intel_dp_create_fake_mst_encoder(intel_dig_port, i);
  570.         return true;
  571. }
  572.  
  573. int
  574. intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id)
  575. {
  576.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  577.         struct drm_device *dev = intel_dig_port->base.base.dev;
  578.         int ret;
  579.  
  580.         intel_dp->can_mst = true;
  581.         intel_dp->mst_mgr.cbs = &mst_cbs;
  582.  
  583.         /* create encoders */
  584.         intel_dp_create_fake_mst_encoders(intel_dig_port);
  585.         ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev->dev, &intel_dp->aux, 16, 3, conn_base_id);
  586.         if (ret) {
  587.                 intel_dp->can_mst = false;
  588.                 return ret;
  589.         }
  590.         return 0;
  591. }
  592.  
  593. void
  594. intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port)
  595. {
  596.         struct intel_dp *intel_dp = &intel_dig_port->dp;
  597.  
  598.         if (!intel_dp->can_mst)
  599.                 return;
  600.  
  601.         drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr);
  602.         /* encoders will get killed by normal cleanup */
  603. }
  604.