487 lines
13 KiB
C
487 lines
13 KiB
C
/*
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* Copyright 2012-15 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#include <linux/version.h>
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#include <drm/drm_atomic_helper.h>
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#include "dm_services.h"
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#include "amdgpu.h"
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#include "amdgpu_dm.h"
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#include "amdgpu_dm_mst_types.h"
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#include "dc.h"
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#include "dm_helpers.h"
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#include "dc_link_ddc.h"
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/* #define TRACE_DPCD */
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#ifdef TRACE_DPCD
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#define SIDE_BAND_MSG(address) (address >= DP_SIDEBAND_MSG_DOWN_REQ_BASE && address < DP_SINK_COUNT_ESI)
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static inline char *side_band_msg_type_to_str(uint32_t address)
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{
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static char str[10] = {0};
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if (address < DP_SIDEBAND_MSG_UP_REP_BASE)
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strcpy(str, "DOWN_REQ");
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else if (address < DP_SIDEBAND_MSG_DOWN_REP_BASE)
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strcpy(str, "UP_REP");
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else if (address < DP_SIDEBAND_MSG_UP_REQ_BASE)
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strcpy(str, "DOWN_REP");
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else
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strcpy(str, "UP_REQ");
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return str;
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}
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static void log_dpcd(uint8_t type,
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uint32_t address,
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uint8_t *data,
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uint32_t size,
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bool res)
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{
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DRM_DEBUG_KMS("Op: %s, addr: %04x, SideBand Msg: %s, Op res: %s\n",
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(type == DP_AUX_NATIVE_READ) ||
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(type == DP_AUX_I2C_READ) ?
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"Read" : "Write",
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address,
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SIDE_BAND_MSG(address) ?
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side_band_msg_type_to_str(address) : "Nop",
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res ? "OK" : "Fail");
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if (res) {
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print_hex_dump(KERN_INFO, "Body: ", DUMP_PREFIX_NONE, 16, 1, data, size, false);
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}
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}
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#endif
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static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux,
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struct drm_dp_aux_msg *msg)
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{
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enum i2c_mot_mode mot = (msg->request & DP_AUX_I2C_MOT) ?
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I2C_MOT_TRUE : I2C_MOT_FALSE;
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enum ddc_result res;
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ssize_t read_bytes;
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if (WARN_ON(msg->size > 16))
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return -E2BIG;
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switch (msg->request & ~DP_AUX_I2C_MOT) {
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case DP_AUX_NATIVE_READ:
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read_bytes = dal_ddc_service_read_dpcd_data(
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TO_DM_AUX(aux)->ddc_service,
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false,
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I2C_MOT_UNDEF,
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msg->address,
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msg->buffer,
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msg->size);
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return read_bytes;
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case DP_AUX_NATIVE_WRITE:
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res = dal_ddc_service_write_dpcd_data(
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TO_DM_AUX(aux)->ddc_service,
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false,
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I2C_MOT_UNDEF,
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msg->address,
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msg->buffer,
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msg->size);
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break;
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case DP_AUX_I2C_READ:
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read_bytes = dal_ddc_service_read_dpcd_data(
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TO_DM_AUX(aux)->ddc_service,
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true,
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mot,
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msg->address,
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msg->buffer,
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msg->size);
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return read_bytes;
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case DP_AUX_I2C_WRITE:
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res = dal_ddc_service_write_dpcd_data(
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TO_DM_AUX(aux)->ddc_service,
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true,
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mot,
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msg->address,
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msg->buffer,
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msg->size);
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break;
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default:
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return 0;
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}
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#ifdef TRACE_DPCD
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log_dpcd(msg->request,
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msg->address,
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msg->buffer,
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msg->size,
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r == DDC_RESULT_SUCESSFULL);
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#endif
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return msg->size;
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}
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static enum drm_connector_status
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dm_dp_mst_detect(struct drm_connector *connector, bool force)
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{
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struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
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struct amdgpu_dm_connector *master = aconnector->mst_port;
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enum drm_connector_status status =
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drm_dp_mst_detect_port(
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connector,
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&master->mst_mgr,
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aconnector->port);
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return status;
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}
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static void
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dm_dp_mst_connector_destroy(struct drm_connector *connector)
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{
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struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector);
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struct amdgpu_encoder *amdgpu_encoder = amdgpu_dm_connector->mst_encoder;
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if (amdgpu_dm_connector->edid) {
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kfree(amdgpu_dm_connector->edid);
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amdgpu_dm_connector->edid = NULL;
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}
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drm_encoder_cleanup(&amdgpu_encoder->base);
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kfree(amdgpu_encoder);
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drm_connector_cleanup(connector);
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kfree(amdgpu_dm_connector);
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}
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static const struct drm_connector_funcs dm_dp_mst_connector_funcs = {
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.detect = dm_dp_mst_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = dm_dp_mst_connector_destroy,
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.reset = amdgpu_dm_connector_funcs_reset,
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.atomic_duplicate_state = amdgpu_dm_connector_atomic_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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.atomic_set_property = amdgpu_dm_connector_atomic_set_property,
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.atomic_get_property = amdgpu_dm_connector_atomic_get_property
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};
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void dm_dp_mst_dc_sink_create(struct drm_connector *connector)
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{
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struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
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struct dc_sink *dc_sink;
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struct dc_sink_init_data init_params = {
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.link = aconnector->dc_link,
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.sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
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/* FIXME none of this is safe. we shouldn't touch aconnector here in
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* atomic_check
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*/
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/*
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* TODO: Need to further figure out why ddc.algo is NULL while MST port exists
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*/
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if (!aconnector->port || !aconnector->port->aux.ddc.algo)
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return;
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ASSERT(aconnector->edid);
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dc_sink = dc_link_add_remote_sink(
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aconnector->dc_link,
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(uint8_t *)aconnector->edid,
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(aconnector->edid->extensions + 1) * EDID_LENGTH,
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&init_params);
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dc_sink->priv = aconnector;
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aconnector->dc_sink = dc_sink;
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amdgpu_dm_add_sink_to_freesync_module(
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connector, aconnector->edid);
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}
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static int dm_dp_mst_get_modes(struct drm_connector *connector)
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{
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struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
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int ret = 0;
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if (!aconnector)
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return drm_add_edid_modes(connector, NULL);
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if (!aconnector->edid) {
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struct edid *edid;
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edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port);
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if (!edid) {
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drm_mode_connector_update_edid_property(
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&aconnector->base,
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NULL);
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return ret;
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}
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aconnector->edid = edid;
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}
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if (!aconnector->dc_sink) {
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struct dc_sink *dc_sink;
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struct dc_sink_init_data init_params = {
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.link = aconnector->dc_link,
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.sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
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dc_sink = dc_link_add_remote_sink(
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aconnector->dc_link,
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(uint8_t *)aconnector->edid,
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(aconnector->edid->extensions + 1) * EDID_LENGTH,
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&init_params);
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dc_sink->priv = aconnector;
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aconnector->dc_sink = dc_sink;
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if (aconnector->dc_sink)
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amdgpu_dm_add_sink_to_freesync_module(
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connector, aconnector->edid);
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}
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drm_mode_connector_update_edid_property(
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&aconnector->base, aconnector->edid);
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ret = drm_add_edid_modes(connector, aconnector->edid);
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return ret;
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}
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static struct drm_encoder *dm_mst_best_encoder(struct drm_connector *connector)
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{
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struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector);
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return &amdgpu_dm_connector->mst_encoder->base;
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}
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static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs = {
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.get_modes = dm_dp_mst_get_modes,
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.mode_valid = amdgpu_dm_connector_mode_valid,
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.best_encoder = dm_mst_best_encoder,
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};
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static void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder)
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{
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drm_encoder_cleanup(encoder);
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kfree(encoder);
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}
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static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs = {
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.destroy = amdgpu_dm_encoder_destroy,
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};
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static struct amdgpu_encoder *
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dm_dp_create_fake_mst_encoder(struct amdgpu_dm_connector *connector)
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{
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struct drm_device *dev = connector->base.dev;
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struct amdgpu_device *adev = dev->dev_private;
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struct amdgpu_encoder *amdgpu_encoder;
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struct drm_encoder *encoder;
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const struct drm_connector_helper_funcs *connector_funcs =
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connector->base.helper_private;
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struct drm_encoder *enc_master =
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connector_funcs->best_encoder(&connector->base);
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DRM_DEBUG_KMS("enc master is %p\n", enc_master);
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amdgpu_encoder = kzalloc(sizeof(*amdgpu_encoder), GFP_KERNEL);
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if (!amdgpu_encoder)
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return NULL;
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encoder = &amdgpu_encoder->base;
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encoder->possible_crtcs = amdgpu_dm_get_encoder_crtc_mask(adev);
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drm_encoder_init(
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dev,
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&amdgpu_encoder->base,
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&amdgpu_dm_encoder_funcs,
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DRM_MODE_ENCODER_DPMST,
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NULL);
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drm_encoder_helper_add(encoder, &amdgpu_dm_encoder_helper_funcs);
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return amdgpu_encoder;
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}
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static struct drm_connector *
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dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
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struct drm_dp_mst_port *port,
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const char *pathprop)
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{
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struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
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struct drm_device *dev = master->base.dev;
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struct amdgpu_device *adev = dev->dev_private;
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struct amdgpu_dm_connector *aconnector;
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struct drm_connector *connector;
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struct drm_connector_list_iter conn_iter;
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drm_connector_list_iter_begin(dev, &conn_iter);
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drm_for_each_connector_iter(connector, &conn_iter) {
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aconnector = to_amdgpu_dm_connector(connector);
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if (aconnector->mst_port == master
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&& !aconnector->port) {
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DRM_INFO("DM_MST: reusing connector: %p [id: %d] [master: %p]\n",
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aconnector, connector->base.id, aconnector->mst_port);
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aconnector->port = port;
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drm_mode_connector_set_path_property(connector, pathprop);
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drm_connector_list_iter_end(&conn_iter);
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aconnector->mst_connected = true;
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return &aconnector->base;
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}
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}
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drm_connector_list_iter_end(&conn_iter);
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aconnector = kzalloc(sizeof(*aconnector), GFP_KERNEL);
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if (!aconnector)
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return NULL;
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connector = &aconnector->base;
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aconnector->port = port;
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aconnector->mst_port = master;
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if (drm_connector_init(
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dev,
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connector,
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&dm_dp_mst_connector_funcs,
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DRM_MODE_CONNECTOR_DisplayPort)) {
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kfree(aconnector);
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return NULL;
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}
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drm_connector_helper_add(connector, &dm_dp_mst_connector_helper_funcs);
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amdgpu_dm_connector_init_helper(
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&adev->dm,
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aconnector,
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DRM_MODE_CONNECTOR_DisplayPort,
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master->dc_link,
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master->connector_id);
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aconnector->mst_encoder = dm_dp_create_fake_mst_encoder(master);
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/*
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* TODO: understand why this one is needed
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*/
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drm_object_attach_property(
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&connector->base,
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dev->mode_config.path_property,
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0);
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drm_object_attach_property(
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&connector->base,
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dev->mode_config.tile_property,
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0);
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drm_mode_connector_set_path_property(connector, pathprop);
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/*
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* Initialize connector state before adding the connectror to drm and
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* framebuffer lists
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*/
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amdgpu_dm_connector_funcs_reset(connector);
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aconnector->mst_connected = true;
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DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n",
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aconnector, connector->base.id, aconnector->mst_port);
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DRM_DEBUG_KMS(":%d\n", connector->base.id);
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return connector;
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}
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static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
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struct drm_connector *connector)
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{
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struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
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DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n",
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aconnector, connector->base.id, aconnector->mst_port);
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aconnector->port = NULL;
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if (aconnector->dc_sink) {
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amdgpu_dm_remove_sink_from_freesync_module(connector);
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dc_link_remove_remote_sink(aconnector->dc_link, aconnector->dc_sink);
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dc_sink_release(aconnector->dc_sink);
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aconnector->dc_sink = NULL;
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}
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aconnector->mst_connected = false;
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}
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static void dm_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
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{
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struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
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struct drm_device *dev = master->base.dev;
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drm_kms_helper_hotplug_event(dev);
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}
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static void dm_dp_mst_link_status_reset(struct drm_connector *connector)
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{
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mutex_lock(&connector->dev->mode_config.mutex);
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drm_mode_connector_set_link_status_property(connector, DRM_MODE_LINK_STATUS_BAD);
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mutex_unlock(&connector->dev->mode_config.mutex);
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}
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static void dm_dp_mst_register_connector(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct amdgpu_device *adev = dev->dev_private;
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struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
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if (adev->mode_info.rfbdev)
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drm_fb_helper_add_one_connector(&adev->mode_info.rfbdev->helper, connector);
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else
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DRM_ERROR("adev->mode_info.rfbdev is NULL\n");
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drm_connector_register(connector);
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if (aconnector->mst_connected)
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dm_dp_mst_link_status_reset(connector);
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}
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static const struct drm_dp_mst_topology_cbs dm_mst_cbs = {
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.add_connector = dm_dp_add_mst_connector,
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.destroy_connector = dm_dp_destroy_mst_connector,
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.hotplug = dm_dp_mst_hotplug,
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.register_connector = dm_dp_mst_register_connector
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};
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void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
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struct amdgpu_dm_connector *aconnector)
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{
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aconnector->dm_dp_aux.aux.name = "dmdc";
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aconnector->dm_dp_aux.aux.dev = dm->adev->dev;
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aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
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aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
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drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
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aconnector->mst_mgr.cbs = &dm_mst_cbs;
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drm_dp_mst_topology_mgr_init(
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&aconnector->mst_mgr,
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dm->adev->ddev,
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&aconnector->dm_dp_aux.aux,
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16,
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4,
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aconnector->connector_id);
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}
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