diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp_mst.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp_mst.c | 618 |
1 files changed, 0 insertions, 618 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c deleted file mode 100644 index 4de247ddf05f..000000000000 --- a/drivers/gpu/drm/i915/intel_dp_mst.c +++ /dev/null @@ -1,618 +0,0 @@ -/* - * Copyright © 2008 Intel Corporation - * 2014 Red Hat Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - */ - -#include <drm/drmP.h> -#include "i915_drv.h" -#include "intel_drv.h" -#include <drm/drm_atomic_helper.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_edid.h> - -static bool intel_dp_mst_compute_config(struct intel_encoder *encoder, - struct intel_crtc_state *pipe_config, - struct drm_connector_state *conn_state) -{ - struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - struct intel_dp *intel_dp = &intel_dig_port->dp; - struct drm_connector *connector = conn_state->connector; - void *port = to_intel_connector(connector)->port; - struct drm_atomic_state *state = pipe_config->base.state; - int bpp; - int lane_count, slots = 0; - const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode; - int mst_pbn; - bool constant_n = drm_dp_has_quirk(&intel_dp->desc, - DP_DPCD_QUIRK_CONSTANT_N); - - if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) - return false; - - pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; - pipe_config->has_pch_encoder = false; - bpp = 24; - if (intel_dp->compliance.test_data.bpc) { - bpp = intel_dp->compliance.test_data.bpc * 3; - DRM_DEBUG_KMS("Setting pipe bpp to %d\n", - bpp); - } - /* - * for MST we always configure max link bw - the spec doesn't - * seem to suggest we should do otherwise. - */ - lane_count = intel_dp_max_lane_count(intel_dp); - - pipe_config->lane_count = lane_count; - - pipe_config->pipe_bpp = bpp; - - pipe_config->port_clock = intel_dp_max_link_rate(intel_dp); - - if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, port)) - pipe_config->has_audio = true; - - mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp); - pipe_config->pbn = mst_pbn; - - /* Zombie connectors can't have VCPI slots */ - if (!drm_connector_is_unregistered(connector)) { - slots = drm_dp_atomic_find_vcpi_slots(state, - &intel_dp->mst_mgr, - port, - mst_pbn); - if (slots < 0) { - DRM_DEBUG_KMS("failed finding vcpi slots:%d\n", - slots); - return false; - } - } - - intel_link_compute_m_n(bpp, lane_count, - adjusted_mode->crtc_clock, - pipe_config->port_clock, - &pipe_config->dp_m_n, - constant_n); - - pipe_config->dp_m_n.tu = slots; - - if (IS_GEN9_LP(dev_priv)) - pipe_config->lane_lat_optim_mask = - bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count); - - intel_ddi_compute_min_voltage_level(dev_priv, pipe_config); - - return true; -} - -static int intel_dp_mst_atomic_check(struct drm_connector *connector, - struct drm_connector_state *new_conn_state) -{ - struct drm_atomic_state *state = new_conn_state->state; - struct drm_connector_state *old_conn_state; - struct drm_crtc *old_crtc; - struct drm_crtc_state *crtc_state; - int slots, ret = 0; - - old_conn_state = drm_atomic_get_old_connector_state(state, connector); - old_crtc = old_conn_state->crtc; - if (!old_crtc) - return ret; - - crtc_state = drm_atomic_get_new_crtc_state(state, old_crtc); - slots = to_intel_crtc_state(crtc_state)->dp_m_n.tu; - if (drm_atomic_crtc_needs_modeset(crtc_state) && slots > 0) { - struct drm_dp_mst_topology_mgr *mgr; - struct drm_encoder *old_encoder; - - old_encoder = old_conn_state->best_encoder; - mgr = &enc_to_mst(old_encoder)->primary->dp.mst_mgr; - - ret = drm_dp_atomic_release_vcpi_slots(state, mgr, slots); - if (ret) - DRM_DEBUG_KMS("failed releasing %d vcpi slots:%d\n", slots, ret); - else - to_intel_crtc_state(crtc_state)->dp_m_n.tu = 0; - } - return ret; -} - -static void intel_mst_disable_dp(struct intel_encoder *encoder, - const struct intel_crtc_state *old_crtc_state, - const struct drm_connector_state *old_conn_state) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - struct intel_dp *intel_dp = &intel_dig_port->dp; - struct intel_connector *connector = - to_intel_connector(old_conn_state->connector); - int ret; - - DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); - - drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port); - - ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); - if (ret) { - DRM_ERROR("failed to update payload %d\n", ret); - } - if (old_crtc_state->has_audio) - intel_audio_codec_disable(encoder, - old_crtc_state, old_conn_state); -} - -static void intel_mst_post_disable_dp(struct intel_encoder *encoder, - const struct intel_crtc_state *old_crtc_state, - const struct drm_connector_state *old_conn_state) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - struct intel_dp *intel_dp = &intel_dig_port->dp; - struct intel_connector *connector = - to_intel_connector(old_conn_state->connector); - - intel_ddi_disable_pipe_clock(old_crtc_state); - - /* this can fail */ - drm_dp_check_act_status(&intel_dp->mst_mgr); - /* and this can also fail */ - drm_dp_update_payload_part2(&intel_dp->mst_mgr); - - drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port); - - /* - * Power down mst path before disabling the port, otherwise we end - * up getting interrupts from the sink upon detecting link loss. - */ - drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, - false); - - intel_dp->active_mst_links--; - - intel_mst->connector = NULL; - if (intel_dp->active_mst_links == 0) { - intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); - intel_dig_port->base.post_disable(&intel_dig_port->base, - old_crtc_state, NULL); - } - - DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); -} - -static void intel_mst_pre_pll_enable_dp(struct intel_encoder *encoder, - const struct intel_crtc_state *pipe_config, - const struct drm_connector_state *conn_state) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - struct intel_dp *intel_dp = &intel_dig_port->dp; - - if (intel_dp->active_mst_links == 0) - intel_dig_port->base.pre_pll_enable(&intel_dig_port->base, - pipe_config, NULL); -} - -static void intel_mst_post_pll_disable_dp(struct intel_encoder *encoder, - const struct intel_crtc_state *old_crtc_state, - const struct drm_connector_state *old_conn_state) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - struct intel_dp *intel_dp = &intel_dig_port->dp; - - if (intel_dp->active_mst_links == 0) - intel_dig_port->base.post_pll_disable(&intel_dig_port->base, - old_crtc_state, - old_conn_state); -} - -static void intel_mst_pre_enable_dp(struct intel_encoder *encoder, - const struct intel_crtc_state *pipe_config, - const struct drm_connector_state *conn_state) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - struct intel_dp *intel_dp = &intel_dig_port->dp; - struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); - enum port port = intel_dig_port->base.port; - struct intel_connector *connector = - to_intel_connector(conn_state->connector); - int ret; - uint32_t temp; - - /* MST encoders are bound to a crtc, not to a connector, - * force the mapping here for get_hw_state. - */ - connector->encoder = encoder; - intel_mst->connector = connector; - - DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); - - if (intel_dp->active_mst_links == 0) - intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); - - drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, true); - - if (intel_dp->active_mst_links == 0) - intel_dig_port->base.pre_enable(&intel_dig_port->base, - pipe_config, NULL); - - ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr, - connector->port, - pipe_config->pbn, - pipe_config->dp_m_n.tu); - if (!ret) - DRM_ERROR("failed to allocate vcpi\n"); - - intel_dp->active_mst_links++; - temp = I915_READ(DP_TP_STATUS(port)); - I915_WRITE(DP_TP_STATUS(port), temp); - - ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); - - intel_ddi_enable_pipe_clock(pipe_config); -} - -static void intel_mst_enable_dp(struct intel_encoder *encoder, - const struct intel_crtc_state *pipe_config, - const struct drm_connector_state *conn_state) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - struct intel_dp *intel_dp = &intel_dig_port->dp; - struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); - enum port port = intel_dig_port->base.port; - - DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links); - - if (intel_wait_for_register(dev_priv, - DP_TP_STATUS(port), - DP_TP_STATUS_ACT_SENT, - DP_TP_STATUS_ACT_SENT, - 1)) - DRM_ERROR("Timed out waiting for ACT sent\n"); - - drm_dp_check_act_status(&intel_dp->mst_mgr); - - drm_dp_update_payload_part2(&intel_dp->mst_mgr); - if (pipe_config->has_audio) - intel_audio_codec_enable(encoder, pipe_config, conn_state); -} - -static bool intel_dp_mst_enc_get_hw_state(struct intel_encoder *encoder, - enum pipe *pipe) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - *pipe = intel_mst->pipe; - if (intel_mst->connector) - return true; - return false; -} - -static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder, - struct intel_crtc_state *pipe_config) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base); - struct intel_digital_port *intel_dig_port = intel_mst->primary; - - intel_ddi_get_config(&intel_dig_port->base, pipe_config); -} - -static int intel_dp_mst_get_ddc_modes(struct drm_connector *connector) -{ - struct intel_connector *intel_connector = to_intel_connector(connector); - struct intel_dp *intel_dp = intel_connector->mst_port; - struct edid *edid; - int ret; - - if (drm_connector_is_unregistered(connector)) - return intel_connector_update_modes(connector, NULL); - - edid = drm_dp_mst_get_edid(connector, &intel_dp->mst_mgr, intel_connector->port); - ret = intel_connector_update_modes(connector, edid); - kfree(edid); - - return ret; -} - -static enum drm_connector_status -intel_dp_mst_detect(struct drm_connector *connector, bool force) -{ - struct intel_connector *intel_connector = to_intel_connector(connector); - struct intel_dp *intel_dp = intel_connector->mst_port; - - if (drm_connector_is_unregistered(connector)) - return connector_status_disconnected; - return drm_dp_mst_detect_port(connector, &intel_dp->mst_mgr, - intel_connector->port); -} - -static const struct drm_connector_funcs intel_dp_mst_connector_funcs = { - .detect = intel_dp_mst_detect, - .fill_modes = drm_helper_probe_single_connector_modes, - .late_register = intel_connector_register, - .early_unregister = intel_connector_unregister, - .destroy = intel_connector_destroy, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, -}; - -static int intel_dp_mst_get_modes(struct drm_connector *connector) -{ - return intel_dp_mst_get_ddc_modes(connector); -} - -static enum drm_mode_status -intel_dp_mst_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) -{ - struct intel_connector *intel_connector = to_intel_connector(connector); - struct intel_dp *intel_dp = intel_connector->mst_port; - int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; - int bpp = 24; /* MST uses fixed bpp */ - int max_rate, mode_rate, max_lanes, max_link_clock; - - if (drm_connector_is_unregistered(connector)) - return MODE_ERROR; - - if (mode->flags & DRM_MODE_FLAG_DBLSCAN) - return MODE_NO_DBLESCAN; - - max_link_clock = intel_dp_max_link_rate(intel_dp); - max_lanes = intel_dp_max_lane_count(intel_dp); - - max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); - mode_rate = intel_dp_link_required(mode->clock, bpp); - - /* TODO - validate mode against available PBN for link */ - if (mode->clock < 10000) - return MODE_CLOCK_LOW; - - if (mode->flags & DRM_MODE_FLAG_DBLCLK) - return MODE_H_ILLEGAL; - - if (mode_rate > max_rate || mode->clock > max_dotclk) - return MODE_CLOCK_HIGH; - - return MODE_OK; -} - -static struct drm_encoder *intel_mst_atomic_best_encoder(struct drm_connector *connector, - struct drm_connector_state *state) -{ - struct intel_connector *intel_connector = to_intel_connector(connector); - struct intel_dp *intel_dp = intel_connector->mst_port; - struct intel_crtc *crtc = to_intel_crtc(state->crtc); - - return &intel_dp->mst_encoders[crtc->pipe]->base.base; -} - -static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = { - .get_modes = intel_dp_mst_get_modes, - .mode_valid = intel_dp_mst_mode_valid, - .atomic_best_encoder = intel_mst_atomic_best_encoder, - .atomic_check = intel_dp_mst_atomic_check, -}; - -static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder) -{ - struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder); - - drm_encoder_cleanup(encoder); - kfree(intel_mst); -} - -static const struct drm_encoder_funcs intel_dp_mst_enc_funcs = { - .destroy = intel_dp_mst_encoder_destroy, -}; - -static bool intel_dp_mst_get_hw_state(struct intel_connector *connector) -{ - if (connector->encoder && connector->base.state->crtc) { - enum pipe pipe; - if (!connector->encoder->get_hw_state(connector->encoder, &pipe)) - return false; - return true; - } - return false; -} - -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) -{ - struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); - struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); - struct drm_device *dev = intel_dig_port->base.base.dev; - struct drm_i915_private *dev_priv = to_i915(dev); - struct intel_connector *intel_connector; - struct drm_connector *connector; - enum pipe pipe; - int ret; - - intel_connector = intel_connector_alloc(); - if (!intel_connector) - return NULL; - - intel_connector->get_hw_state = intel_dp_mst_get_hw_state; - intel_connector->mst_port = intel_dp; - intel_connector->port = port; - - connector = &intel_connector->base; - ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs, - DRM_MODE_CONNECTOR_DisplayPort); - if (ret) { - intel_connector_free(intel_connector); - return NULL; - } - - drm_connector_helper_add(connector, &intel_dp_mst_connector_helper_funcs); - - for_each_pipe(dev_priv, pipe) { - struct drm_encoder *enc = - &intel_dp->mst_encoders[pipe]->base.base; - - ret = drm_connector_attach_encoder(&intel_connector->base, enc); - if (ret) - goto err; - } - - drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); - drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0); - - ret = drm_connector_set_path_property(connector, pathprop); - if (ret) - goto err; - - return connector; - -err: - drm_connector_cleanup(connector); - return NULL; -} - -static void intel_dp_register_mst_connector(struct drm_connector *connector) -{ - struct drm_i915_private *dev_priv = to_i915(connector->dev); - - if (dev_priv->fbdev) - drm_fb_helper_add_one_connector(&dev_priv->fbdev->helper, - connector); - - drm_connector_register(connector); -} - -static void intel_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, - struct drm_connector *connector) -{ - struct drm_i915_private *dev_priv = to_i915(connector->dev); - - DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, connector->name); - drm_connector_unregister(connector); - - if (dev_priv->fbdev) - drm_fb_helper_remove_one_connector(&dev_priv->fbdev->helper, - connector); - - drm_connector_put(connector); -} - -static void intel_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr) -{ - struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); - struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); - struct drm_device *dev = intel_dig_port->base.base.dev; - - drm_kms_helper_hotplug_event(dev); -} - -static const struct drm_dp_mst_topology_cbs mst_cbs = { - .add_connector = intel_dp_add_mst_connector, - .register_connector = intel_dp_register_mst_connector, - .destroy_connector = intel_dp_destroy_mst_connector, - .hotplug = intel_dp_mst_hotplug, -}; - -static struct intel_dp_mst_encoder * -intel_dp_create_fake_mst_encoder(struct intel_digital_port *intel_dig_port, enum pipe pipe) -{ - struct intel_dp_mst_encoder *intel_mst; - struct intel_encoder *intel_encoder; - struct drm_device *dev = intel_dig_port->base.base.dev; - - intel_mst = kzalloc(sizeof(*intel_mst), GFP_KERNEL); - - if (!intel_mst) - return NULL; - - intel_mst->pipe = pipe; - intel_encoder = &intel_mst->base; - intel_mst->primary = intel_dig_port; - - drm_encoder_init(dev, &intel_encoder->base, &intel_dp_mst_enc_funcs, - DRM_MODE_ENCODER_DPMST, "DP-MST %c", pipe_name(pipe)); - - intel_encoder->type = INTEL_OUTPUT_DP_MST; - intel_encoder->power_domain = intel_dig_port->base.power_domain; - intel_encoder->port = intel_dig_port->base.port; - intel_encoder->crtc_mask = 0x7; - intel_encoder->cloneable = 0; - - intel_encoder->compute_config = intel_dp_mst_compute_config; - intel_encoder->disable = intel_mst_disable_dp; - intel_encoder->post_disable = intel_mst_post_disable_dp; - intel_encoder->pre_pll_enable = intel_mst_pre_pll_enable_dp; - intel_encoder->post_pll_disable = intel_mst_post_pll_disable_dp; - intel_encoder->pre_enable = intel_mst_pre_enable_dp; - intel_encoder->enable = intel_mst_enable_dp; - intel_encoder->get_hw_state = intel_dp_mst_enc_get_hw_state; - intel_encoder->get_config = intel_dp_mst_enc_get_config; - - return intel_mst; - -} - -static bool -intel_dp_create_fake_mst_encoders(struct intel_digital_port *intel_dig_port) -{ - struct intel_dp *intel_dp = &intel_dig_port->dp; - struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev); - enum pipe pipe; - - for_each_pipe(dev_priv, pipe) - intel_dp->mst_encoders[pipe] = intel_dp_create_fake_mst_encoder(intel_dig_port, pipe); - return true; -} - -int -intel_dp_mst_encoder_init(struct intel_digital_port *intel_dig_port, int conn_base_id) -{ - struct intel_dp *intel_dp = &intel_dig_port->dp; - struct drm_device *dev = intel_dig_port->base.base.dev; - int ret; - - intel_dp->can_mst = true; - intel_dp->mst_mgr.cbs = &mst_cbs; - - /* create encoders */ - intel_dp_create_fake_mst_encoders(intel_dig_port); - ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, dev, - &intel_dp->aux, 16, 3, conn_base_id); - if (ret) { - intel_dp->can_mst = false; - return ret; - } - return 0; -} - -void -intel_dp_mst_encoder_cleanup(struct intel_digital_port *intel_dig_port) -{ - struct intel_dp *intel_dp = &intel_dig_port->dp; - - if (!intel_dp->can_mst) - return; - - drm_dp_mst_topology_mgr_destroy(&intel_dp->mst_mgr); - /* encoders will get killed by normal cleanup */ -} |