blob: a2d91a499700153fd5692adadd6a25251f8aecb5 [file] [log] [blame]
/*
* 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/drm_atomic_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_probe_helper.h>
#include "i915_drv.h"
#include "intel_atomic.h"
#include "intel_audio.h"
#include "intel_connector.h"
#include "intel_ddi.h"
#include "intel_display_types.h"
#include "intel_hotplug.h"
#include "intel_dp.h"
#include "intel_dp_mst.h"
#include "intel_dpio_phy.h"
static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state,
struct link_config_limits *limits)
{
struct drm_atomic_state *state = crtc_state->uapi.state;
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
struct intel_dp *intel_dp = &intel_mst->primary->dp;
struct intel_connector *connector =
to_intel_connector(conn_state->connector);
struct drm_i915_private *i915 = to_i915(connector->base.dev);
const struct drm_display_mode *adjusted_mode =
&crtc_state->hw.adjusted_mode;
bool constant_n = drm_dp_has_quirk(&intel_dp->desc, 0,
DP_DPCD_QUIRK_CONSTANT_N);
int bpp, slots = -EINVAL;
crtc_state->lane_count = limits->max_lane_count;
crtc_state->port_clock = limits->max_clock;
for (bpp = limits->max_bpp; bpp >= limits->min_bpp; bpp -= 2 * 3) {
crtc_state->pipe_bpp = bpp;
crtc_state->pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock,
crtc_state->pipe_bpp,
false);
slots = drm_dp_atomic_find_vcpi_slots(state, &intel_dp->mst_mgr,
connector->port,
crtc_state->pbn, 0);
if (slots == -EDEADLK)
return slots;
if (slots >= 0)
break;
}
if (slots < 0) {
drm_dbg_kms(&i915->drm, "failed finding vcpi slots:%d\n",
slots);
return slots;
}
intel_link_compute_m_n(crtc_state->pipe_bpp,
crtc_state->lane_count,
adjusted_mode->crtc_clock,
crtc_state->port_clock,
&crtc_state->dp_m_n,
constant_n, crtc_state->fec_enable);
crtc_state->dp_m_n.tu = slots;
return 0;
}
static int 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);
struct intel_dp *intel_dp = &intel_mst->primary->dp;
struct intel_connector *connector =
to_intel_connector(conn_state->connector);
struct intel_digital_connector_state *intel_conn_state =
to_intel_digital_connector_state(conn_state);
const struct drm_display_mode *adjusted_mode =
&pipe_config->hw.adjusted_mode;
struct link_config_limits limits;
int ret;
if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)
return -EINVAL;
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
pipe_config->has_pch_encoder = false;
if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
pipe_config->has_audio = connector->port->has_audio;
else
pipe_config->has_audio =
intel_conn_state->force_audio == HDMI_AUDIO_ON;
/*
* for MST we always configure max link bw - the spec doesn't
* seem to suggest we should do otherwise.
*/
limits.min_clock =
limits.max_clock = intel_dp_max_link_rate(intel_dp);
limits.min_lane_count =
limits.max_lane_count = intel_dp_max_lane_count(intel_dp);
limits.min_bpp = intel_dp_min_bpp(pipe_config);
/*
* FIXME: If all the streams can't fit into the link with
* their current pipe_bpp we should reduce pipe_bpp across
* the board until things start to fit. Until then we
* limit to <= 8bpc since that's what was hardcoded for all
* MST streams previously. This hack should be removed once
* we have the proper retry logic in place.
*/
limits.max_bpp = min(pipe_config->pipe_bpp, 24);
intel_dp_adjust_compliance_config(intel_dp, pipe_config, &limits);
ret = intel_dp_mst_compute_link_config(encoder, pipe_config,
conn_state, &limits);
if (ret)
return ret;
pipe_config->limited_color_range =
intel_dp_limited_color_range(pipe_config, conn_state);
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 0;
}
/*
* Iterate over all connectors and return a mask of
* all CPU transcoders streaming over the same DP link.
*/
static unsigned int
intel_dp_mst_transcoder_mask(struct intel_atomic_state *state,
struct intel_dp *mst_port)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
const struct intel_digital_connector_state *conn_state;
struct intel_connector *connector;
u8 transcoders = 0;
int i;
if (INTEL_GEN(dev_priv) < 12)
return 0;
for_each_new_intel_connector_in_state(state, connector, conn_state, i) {
const struct intel_crtc_state *crtc_state;
struct intel_crtc *crtc;
if (connector->mst_port != mst_port || !conn_state->base.crtc)
continue;
crtc = to_intel_crtc(conn_state->base.crtc);
crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
if (!crtc_state->hw.active)
continue;
transcoders |= BIT(crtc_state->cpu_transcoder);
}
return transcoders;
}
static int intel_dp_mst_compute_config_late(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct intel_atomic_state *state = to_intel_atomic_state(conn_state->state);
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
struct intel_dp *intel_dp = &intel_mst->primary->dp;
/* lowest numbered transcoder will be designated master */
crtc_state->mst_master_transcoder =
ffs(intel_dp_mst_transcoder_mask(state, intel_dp)) - 1;
return 0;
}
/*
* If one of the connectors in a MST stream needs a modeset, mark all CRTCs
* that shares the same MST stream as mode changed,
* intel_modeset_pipe_config()+intel_crtc_check_fastset() will take care to do
* a fastset when possible.
*/
static int
intel_dp_mst_atomic_master_trans_check(struct intel_connector *connector,
struct intel_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct drm_connector_list_iter connector_list_iter;
struct intel_connector *connector_iter;
if (INTEL_GEN(dev_priv) < 12)
return 0;
if (!intel_connector_needs_modeset(state, &connector->base))
return 0;
drm_connector_list_iter_begin(&dev_priv->drm, &connector_list_iter);
for_each_intel_connector_iter(connector_iter, &connector_list_iter) {
struct intel_digital_connector_state *conn_iter_state;
struct intel_crtc_state *crtc_state;
struct intel_crtc *crtc;
int ret;
if (connector_iter->mst_port != connector->mst_port ||
connector_iter == connector)
continue;
conn_iter_state = intel_atomic_get_digital_connector_state(state,
connector_iter);
if (IS_ERR(conn_iter_state)) {
drm_connector_list_iter_end(&connector_list_iter);
return PTR_ERR(conn_iter_state);
}
if (!conn_iter_state->base.crtc)
continue;
crtc = to_intel_crtc(conn_iter_state->base.crtc);
crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
if (IS_ERR(crtc_state)) {
drm_connector_list_iter_end(&connector_list_iter);
return PTR_ERR(crtc_state);
}
ret = drm_atomic_add_affected_planes(&state->base, &crtc->base);
if (ret) {
drm_connector_list_iter_end(&connector_list_iter);
return ret;
}
crtc_state->uapi.mode_changed = true;
}
drm_connector_list_iter_end(&connector_list_iter);
return 0;
}
static int
intel_dp_mst_atomic_check(struct drm_connector *connector,
struct drm_atomic_state *_state)
{
struct intel_atomic_state *state = to_intel_atomic_state(_state);
struct drm_connector_state *new_conn_state =
drm_atomic_get_new_connector_state(&state->base, connector);
struct drm_connector_state *old_conn_state =
drm_atomic_get_old_connector_state(&state->base, connector);
struct intel_connector *intel_connector =
to_intel_connector(connector);
struct drm_crtc *new_crtc = new_conn_state->crtc;
struct drm_dp_mst_topology_mgr *mgr;
int ret;
ret = intel_digital_connector_atomic_check(connector, &state->base);
if (ret)
return ret;
ret = intel_dp_mst_atomic_master_trans_check(intel_connector, state);
if (ret)
return ret;
if (!old_conn_state->crtc)
return 0;
/* We only want to free VCPI if this state disables the CRTC on this
* connector
*/
if (new_crtc) {
struct intel_crtc *intel_crtc = to_intel_crtc(new_crtc);
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, intel_crtc);
if (!crtc_state ||
!drm_atomic_crtc_needs_modeset(&crtc_state->uapi) ||
crtc_state->uapi.enable)
return 0;
}
mgr = &enc_to_mst(to_intel_encoder(old_conn_state->best_encoder))->primary->dp.mst_mgr;
ret = drm_dp_atomic_release_vcpi_slots(&state->base, mgr,
intel_connector->port);
return ret;
}
static void clear_act_sent(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
intel_de_write(i915, intel_dp->regs.dp_tp_status,
DP_TP_STATUS_ACT_SENT);
}
static void wait_for_act_sent(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
if (intel_de_wait_for_set(i915, intel_dp->regs.dp_tp_status,
DP_TP_STATUS_ACT_SENT, 1))
drm_err(&i915->drm, "Timed out waiting for ACT sent\n");
drm_dp_check_act_status(&intel_dp->mst_mgr);
}
static void intel_mst_disable_dp(struct intel_atomic_state *state,
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);
struct intel_digital_port *dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &dig_port->dp;
struct intel_connector *connector =
to_intel_connector(old_conn_state->connector);
struct drm_i915_private *i915 = to_i915(connector->base.dev);
int ret;
drm_dbg_kms(&i915->drm, "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_dbg_kms(&i915->drm, "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_atomic_state *state,
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);
struct intel_digital_port *dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &dig_port->dp;
struct intel_connector *connector =
to_intel_connector(old_conn_state->connector);
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
bool last_mst_stream;
u32 val;
intel_dp->active_mst_links--;
last_mst_stream = intel_dp->active_mst_links == 0;
drm_WARN_ON(&dev_priv->drm,
INTEL_GEN(dev_priv) >= 12 && last_mst_stream &&
!intel_dp_mst_is_master_trans(old_crtc_state));
intel_crtc_vblank_off(old_crtc_state);
intel_disable_pipe(old_crtc_state);
drm_dp_update_payload_part2(&intel_dp->mst_mgr);
clear_act_sent(intel_dp);
val = intel_de_read(dev_priv,
TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder));
val &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
intel_de_write(dev_priv,
TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder),
val);
wait_for_act_sent(intel_dp);
drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port);
intel_ddi_disable_transcoder_func(old_crtc_state);
if (INTEL_GEN(dev_priv) >= 9)
skl_scaler_disable(old_crtc_state);
else
ilk_pfit_disable(old_crtc_state);
/*
* 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);
/*
* BSpec 4287: disable DIP after the transcoder is disabled and before
* the transcoder clock select is set to none.
*/
if (last_mst_stream)
intel_dp_set_infoframes(&dig_port->base, false,
old_crtc_state, NULL);
/*
* From TGL spec: "If multi-stream slave transcoder: Configure
* Transcoder Clock Select to direct no clock to the transcoder"
*
* From older GENs spec: "Configure Transcoder Clock Select to direct
* no clock to the transcoder"
*/
if (INTEL_GEN(dev_priv) < 12 || !last_mst_stream)
intel_ddi_disable_pipe_clock(old_crtc_state);
intel_mst->connector = NULL;
if (last_mst_stream)
dig_port->base.post_disable(state, &dig_port->base,
old_crtc_state, NULL);
drm_dbg_kms(&dev_priv->drm, "active links %d\n",
intel_dp->active_mst_links);
}
static void intel_mst_pre_pll_enable_dp(struct intel_atomic_state *state,
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);
struct intel_digital_port *dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &dig_port->dp;
if (intel_dp->active_mst_links == 0)
dig_port->base.pre_pll_enable(state, &dig_port->base,
pipe_config, NULL);
}
static void intel_mst_pre_enable_dp(struct intel_atomic_state *state,
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);
struct intel_digital_port *dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &dig_port->dp;
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_connector *connector =
to_intel_connector(conn_state->connector);
int ret;
bool first_mst_stream;
/* 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;
first_mst_stream = intel_dp->active_mst_links == 0;
drm_WARN_ON(&dev_priv->drm,
INTEL_GEN(dev_priv) >= 12 && first_mst_stream &&
!intel_dp_mst_is_master_trans(pipe_config));
drm_dbg_kms(&dev_priv->drm, "active links %d\n",
intel_dp->active_mst_links);
if (first_mst_stream)
intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port, true);
if (first_mst_stream)
dig_port->base.pre_enable(state, &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_err(&dev_priv->drm, "failed to allocate vcpi\n");
intel_dp->active_mst_links++;
ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
/*
* Before Gen 12 this is not done as part of
* dig_port->base.pre_enable() and should be done here. For
* Gen 12+ the step in which this should be done is different for the
* first MST stream, so it's done on the DDI for the first stream and
* here for the following ones.
*/
if (INTEL_GEN(dev_priv) < 12 || !first_mst_stream)
intel_ddi_enable_pipe_clock(encoder, pipe_config);
intel_ddi_set_dp_msa(pipe_config, conn_state);
intel_dp_set_m_n(pipe_config, M1_N1);
}
static void intel_mst_enable_dp(struct intel_atomic_state *state,
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);
struct intel_digital_port *dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &dig_port->dp;
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
u32 val;
drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder);
clear_act_sent(intel_dp);
intel_ddi_enable_transcoder_func(encoder, pipe_config);
val = intel_de_read(dev_priv,
TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
val |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
intel_de_write(dev_priv,
TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder),
val);
drm_dbg_kms(&dev_priv->drm, "active links %d\n",
intel_dp->active_mst_links);
wait_for_act_sent(intel_dp);
drm_dp_update_payload_part2(&intel_dp->mst_mgr);
intel_enable_pipe(pipe_config);
intel_crtc_vblank_on(pipe_config);
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);
*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);
struct intel_digital_port *dig_port = intel_mst->primary;
intel_ddi_get_config(&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 int
intel_dp_mst_connector_late_register(struct drm_connector *connector)
{
struct intel_connector *intel_connector = to_intel_connector(connector);
int ret;
ret = drm_dp_mst_connector_late_register(connector,
intel_connector->port);
if (ret < 0)
return ret;
ret = intel_connector_register(connector);
if (ret < 0)
drm_dp_mst_connector_early_unregister(connector,
intel_connector->port);
return ret;
}
static void
intel_dp_mst_connector_early_unregister(struct drm_connector *connector)
{
struct intel_connector *intel_connector = to_intel_connector(connector);
intel_connector_unregister(connector);
drm_dp_mst_connector_early_unregister(connector,
intel_connector->port);
}
static const struct drm_connector_funcs intel_dp_mst_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.atomic_get_property = intel_digital_connector_atomic_get_property,
.atomic_set_property = intel_digital_connector_atomic_set_property,
.late_register = intel_dp_mst_connector_late_register,
.early_unregister = intel_dp_mst_connector_early_unregister,
.destroy = intel_connector_destroy,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.atomic_duplicate_state = intel_digital_connector_duplicate_state,
};
static int intel_dp_mst_get_modes(struct drm_connector *connector)
{
return intel_dp_mst_get_ddc_modes(connector);
}
static int
intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
struct drm_display_mode *mode,
struct drm_modeset_acquire_ctx *ctx,
enum drm_mode_status *status)
{
struct drm_i915_private *dev_priv = to_i915(connector->dev);
struct intel_connector *intel_connector = to_intel_connector(connector);
struct intel_dp *intel_dp = intel_connector->mst_port;
struct drm_dp_mst_topology_mgr *mgr = &intel_dp->mst_mgr;
struct drm_dp_mst_port *port = intel_connector->port;
const int min_bpp = 18;
int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
int max_rate, mode_rate, max_lanes, max_link_clock;
int ret;
if (drm_connector_is_unregistered(connector)) {
*status = MODE_ERROR;
return 0;
}
if (mode->flags & DRM_MODE_FLAG_DBLSCAN) {
*status = MODE_NO_DBLESCAN;
return 0;
}
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, min_bpp);
ret = drm_modeset_lock(&mgr->base.lock, ctx);
if (ret)
return ret;
if (mode_rate > max_rate || mode->clock > max_dotclk ||
drm_dp_calc_pbn_mode(mode->clock, min_bpp, false) > port->full_pbn) {
*status = MODE_CLOCK_HIGH;
return 0;
}
if (mode->clock < 10000) {
*status = MODE_CLOCK_LOW;
return 0;
}
if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
*status = MODE_H_ILLEGAL;
return 0;
}
*status = intel_mode_valid_max_plane_size(dev_priv, mode);
return 0;
}
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 int
intel_dp_mst_detect(struct drm_connector *connector,
struct drm_modeset_acquire_ctx *ctx, 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, ctx, &intel_dp->mst_mgr,
intel_connector->port);
}
static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_funcs = {
.get_modes = intel_dp_mst_get_modes,
.mode_valid_ctx = intel_dp_mst_mode_valid_ctx,
.atomic_best_encoder = intel_mst_atomic_best_encoder,
.atomic_check = intel_dp_mst_atomic_check,
.detect_ctx = intel_dp_mst_detect,
};
static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder)
{
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(to_intel_encoder(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 (intel_attached_encoder(connector) && connector->base.state->crtc) {
enum pipe pipe;
if (!intel_attached_encoder(connector)->get_hw_state(intel_attached_encoder(connector), &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 *dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = 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;
drm_dp_mst_get_port_malloc(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;
intel_attach_force_audio_property(connector);
intel_attach_broadcast_rgb_property(connector);
/*
* Reuse the prop from the SST connector because we're
* not allowed to create new props after device registration.
*/
connector->max_bpc_property =
intel_dp->attached_connector->base.max_bpc_property;
if (connector->max_bpc_property)
drm_connector_attach_max_bpc_property(connector, 6, 12);
return connector;
err:
drm_connector_cleanup(connector);
return NULL;
}
static void
intel_dp_mst_poll_hpd_irq(struct drm_dp_mst_topology_mgr *mgr)
{
struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr);
intel_hpd_trigger_irq(dp_to_dig_port(intel_dp));
}
static const struct drm_dp_mst_topology_cbs mst_cbs = {
.add_connector = intel_dp_add_mst_connector,
.poll_hpd_irq = intel_dp_mst_poll_hpd_irq,
};
static struct intel_dp_mst_encoder *
intel_dp_create_fake_mst_encoder(struct intel_digital_port *dig_port, enum pipe pipe)
{
struct intel_dp_mst_encoder *intel_mst;
struct intel_encoder *intel_encoder;
struct drm_device *dev = 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 = 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 = dig_port->base.power_domain;
intel_encoder->port = dig_port->base.port;
intel_encoder->cloneable = 0;
/*
* This is wrong, but broken userspace uses the intersection
* of possible_crtcs of all the encoders of a given connector
* to figure out which crtcs can drive said connector. What
* should be used instead is the union of possible_crtcs.
* To keep such userspace functioning we must misconfigure
* this to make sure the intersection is not empty :(
*/
intel_encoder->pipe_mask = ~0;
intel_encoder->compute_config = intel_dp_mst_compute_config;
intel_encoder->compute_config_late = intel_dp_mst_compute_config_late;
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->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 *dig_port)
{
struct intel_dp *intel_dp = &dig_port->dp;
struct drm_i915_private *dev_priv = to_i915(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(dig_port, pipe);
return true;
}
int
intel_dp_mst_encoder_active_links(struct intel_digital_port *dig_port)
{
return dig_port->dp.active_mst_links;
}
int
intel_dp_mst_encoder_init(struct intel_digital_port *dig_port, int conn_base_id)
{
struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
struct intel_dp *intel_dp = &dig_port->dp;
enum port port = dig_port->base.port;
int ret;
if (!HAS_DP_MST(i915) || intel_dp_is_edp(intel_dp))
return 0;
if (INTEL_GEN(i915) < 12 && port == PORT_A)
return 0;
if (INTEL_GEN(i915) < 11 && port == PORT_E)
return 0;
intel_dp->mst_mgr.cbs = &mst_cbs;
/* create encoders */
intel_dp_create_fake_mst_encoders(dig_port);
ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, &i915->drm,
&intel_dp->aux, 16, 3, conn_base_id);
if (ret)
return ret;
intel_dp->can_mst = true;
return 0;
}
void
intel_dp_mst_encoder_cleanup(struct intel_digital_port *dig_port)
{
struct intel_dp *intel_dp = &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 */
}
bool intel_dp_mst_is_master_trans(const struct intel_crtc_state *crtc_state)
{
return crtc_state->mst_master_transcoder == crtc_state->cpu_transcoder;
}
bool intel_dp_mst_is_slave_trans(const struct intel_crtc_state *crtc_state)
{
return crtc_state->mst_master_transcoder != INVALID_TRANSCODER &&
crtc_state->mst_master_transcoder != crtc_state->cpu_transcoder;
}