2 * Copyright 2012-15 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include <linux/version.h>
27 #include <drm/drm_atomic_helper.h>
28 #include "dm_services.h"
30 #include "amdgpu_dm.h"
31 #include "amdgpu_dm_mst_types.h"
34 #include "dm_helpers.h"
36 #include "dc_link_ddc.h"
38 /* #define TRACE_DPCD */
41 #define SIDE_BAND_MSG(address) (address >= DP_SIDEBAND_MSG_DOWN_REQ_BASE && address < DP_SINK_COUNT_ESI)
43 static inline char *side_band_msg_type_to_str(uint32_t address)
45 static char str[10] = {0};
47 if (address < DP_SIDEBAND_MSG_UP_REP_BASE)
48 strcpy(str, "DOWN_REQ");
49 else if (address < DP_SIDEBAND_MSG_DOWN_REP_BASE)
50 strcpy(str, "UP_REP");
51 else if (address < DP_SIDEBAND_MSG_UP_REQ_BASE)
52 strcpy(str, "DOWN_REP");
54 strcpy(str, "UP_REQ");
59 static void log_dpcd(uint8_t type,
65 DRM_DEBUG_KMS("Op: %s, addr: %04x, SideBand Msg: %s, Op res: %s\n",
66 (type == DP_AUX_NATIVE_READ) ||
67 (type == DP_AUX_I2C_READ) ?
70 SIDE_BAND_MSG(address) ?
71 side_band_msg_type_to_str(address) : "Nop",
75 print_hex_dump(KERN_INFO, "Body: ", DUMP_PREFIX_NONE, 16, 1, data, size, false);
80 static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux,
81 struct drm_dp_aux_msg *msg)
84 enum i2caux_transaction_action action;
85 enum aux_transaction_type type;
87 if (WARN_ON(msg->size > 16))
90 switch (msg->request & ~DP_AUX_I2C_MOT) {
91 case DP_AUX_NATIVE_READ:
92 type = AUX_TRANSACTION_TYPE_DP;
93 action = I2CAUX_TRANSACTION_ACTION_DP_READ;
95 result = dc_link_aux_transfer(TO_DM_AUX(aux)->ddc_service,
103 case DP_AUX_NATIVE_WRITE:
104 type = AUX_TRANSACTION_TYPE_DP;
105 action = I2CAUX_TRANSACTION_ACTION_DP_WRITE;
107 dc_link_aux_transfer(TO_DM_AUX(aux)->ddc_service,
116 case DP_AUX_I2C_READ:
117 type = AUX_TRANSACTION_TYPE_I2C;
118 if (msg->request & DP_AUX_I2C_MOT)
119 action = I2CAUX_TRANSACTION_ACTION_I2C_READ_MOT;
121 action = I2CAUX_TRANSACTION_ACTION_I2C_READ;
123 result = dc_link_aux_transfer(TO_DM_AUX(aux)->ddc_service,
131 case DP_AUX_I2C_WRITE:
132 type = AUX_TRANSACTION_TYPE_I2C;
133 if (msg->request & DP_AUX_I2C_MOT)
134 action = I2CAUX_TRANSACTION_ACTION_I2C_WRITE_MOT;
136 action = I2CAUX_TRANSACTION_ACTION_I2C_WRITE;
138 dc_link_aux_transfer(TO_DM_AUX(aux)->ddc_service,
152 log_dpcd(msg->request,
156 r == DDC_RESULT_SUCESSFULL);
159 if (result < 0) /* DC doesn't know about kernel error codes */
165 static enum drm_connector_status
166 dm_dp_mst_detect(struct drm_connector *connector, bool force)
168 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
169 struct amdgpu_dm_connector *master = aconnector->mst_port;
171 enum drm_connector_status status =
172 drm_dp_mst_detect_port(
181 dm_dp_mst_connector_destroy(struct drm_connector *connector)
183 struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector);
184 struct amdgpu_encoder *amdgpu_encoder = amdgpu_dm_connector->mst_encoder;
186 if (amdgpu_dm_connector->edid) {
187 kfree(amdgpu_dm_connector->edid);
188 amdgpu_dm_connector->edid = NULL;
191 drm_encoder_cleanup(&amdgpu_encoder->base);
192 kfree(amdgpu_encoder);
193 drm_connector_cleanup(connector);
194 kfree(amdgpu_dm_connector);
197 static const struct drm_connector_funcs dm_dp_mst_connector_funcs = {
198 .detect = dm_dp_mst_detect,
199 .fill_modes = drm_helper_probe_single_connector_modes,
200 .destroy = dm_dp_mst_connector_destroy,
201 .reset = amdgpu_dm_connector_funcs_reset,
202 .atomic_duplicate_state = amdgpu_dm_connector_atomic_duplicate_state,
203 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
204 .atomic_set_property = amdgpu_dm_connector_atomic_set_property,
205 .atomic_get_property = amdgpu_dm_connector_atomic_get_property
208 void dm_dp_mst_dc_sink_create(struct drm_connector *connector)
210 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
211 struct dc_sink *dc_sink;
212 struct dc_sink_init_data init_params = {
213 .link = aconnector->dc_link,
214 .sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
216 /* FIXME none of this is safe. we shouldn't touch aconnector here in
221 * TODO: Need to further figure out why ddc.algo is NULL while MST port exists
223 if (!aconnector->port || !aconnector->port->aux.ddc.algo)
226 ASSERT(aconnector->edid);
228 dc_sink = dc_link_add_remote_sink(
230 (uint8_t *)aconnector->edid,
231 (aconnector->edid->extensions + 1) * EDID_LENGTH,
234 dc_sink->priv = aconnector;
235 aconnector->dc_sink = dc_sink;
237 amdgpu_dm_add_sink_to_freesync_module(
238 connector, aconnector->edid);
241 static int dm_dp_mst_get_modes(struct drm_connector *connector)
243 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
247 return drm_add_edid_modes(connector, NULL);
249 if (!aconnector->edid) {
251 edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port);
254 drm_connector_update_edid_property(
260 aconnector->edid = edid;
263 if (!aconnector->dc_sink) {
264 struct dc_sink *dc_sink;
265 struct dc_sink_init_data init_params = {
266 .link = aconnector->dc_link,
267 .sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
268 dc_sink = dc_link_add_remote_sink(
270 (uint8_t *)aconnector->edid,
271 (aconnector->edid->extensions + 1) * EDID_LENGTH,
274 dc_sink->priv = aconnector;
275 aconnector->dc_sink = dc_sink;
277 if (aconnector->dc_sink)
278 amdgpu_dm_add_sink_to_freesync_module(
279 connector, aconnector->edid);
282 drm_connector_update_edid_property(
283 &aconnector->base, aconnector->edid);
285 ret = drm_add_edid_modes(connector, aconnector->edid);
290 static struct drm_encoder *dm_mst_best_encoder(struct drm_connector *connector)
292 struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector);
294 return &amdgpu_dm_connector->mst_encoder->base;
297 static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs = {
298 .get_modes = dm_dp_mst_get_modes,
299 .mode_valid = amdgpu_dm_connector_mode_valid,
300 .best_encoder = dm_mst_best_encoder,
303 static void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder)
305 drm_encoder_cleanup(encoder);
309 static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs = {
310 .destroy = amdgpu_dm_encoder_destroy,
313 static struct amdgpu_encoder *
314 dm_dp_create_fake_mst_encoder(struct amdgpu_dm_connector *connector)
316 struct drm_device *dev = connector->base.dev;
317 struct amdgpu_device *adev = dev->dev_private;
318 struct amdgpu_encoder *amdgpu_encoder;
319 struct drm_encoder *encoder;
321 amdgpu_encoder = kzalloc(sizeof(*amdgpu_encoder), GFP_KERNEL);
325 encoder = &amdgpu_encoder->base;
326 encoder->possible_crtcs = amdgpu_dm_get_encoder_crtc_mask(adev);
330 &amdgpu_encoder->base,
331 &amdgpu_dm_encoder_funcs,
332 DRM_MODE_ENCODER_DPMST,
335 drm_encoder_helper_add(encoder, &amdgpu_dm_encoder_helper_funcs);
337 return amdgpu_encoder;
340 static struct drm_connector *
341 dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
342 struct drm_dp_mst_port *port,
343 const char *pathprop)
345 struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
346 struct drm_device *dev = master->base.dev;
347 struct amdgpu_device *adev = dev->dev_private;
348 struct amdgpu_dm_connector *aconnector;
349 struct drm_connector *connector;
351 aconnector = kzalloc(sizeof(*aconnector), GFP_KERNEL);
355 connector = &aconnector->base;
356 aconnector->port = port;
357 aconnector->mst_port = master;
359 if (drm_connector_init(
362 &dm_dp_mst_connector_funcs,
363 DRM_MODE_CONNECTOR_DisplayPort)) {
367 drm_connector_helper_add(connector, &dm_dp_mst_connector_helper_funcs);
369 amdgpu_dm_connector_init_helper(
372 DRM_MODE_CONNECTOR_DisplayPort,
374 master->connector_id);
376 aconnector->mst_encoder = dm_dp_create_fake_mst_encoder(master);
377 drm_connector_attach_encoder(&aconnector->base,
378 &aconnector->mst_encoder->base);
380 drm_object_attach_property(
382 dev->mode_config.path_property,
384 drm_object_attach_property(
386 dev->mode_config.tile_property,
389 drm_connector_set_path_property(connector, pathprop);
392 * Initialize connector state before adding the connectror to drm and
395 amdgpu_dm_connector_funcs_reset(connector);
397 DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n",
398 aconnector, connector->base.id, aconnector->mst_port);
400 DRM_DEBUG_KMS(":%d\n", connector->base.id);
405 static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
406 struct drm_connector *connector)
408 struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
409 struct drm_device *dev = master->base.dev;
410 struct amdgpu_device *adev = dev->dev_private;
411 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
413 DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n",
414 aconnector, connector->base.id, aconnector->mst_port);
416 aconnector->port = NULL;
417 if (aconnector->dc_sink) {
418 amdgpu_dm_remove_sink_from_freesync_module(connector);
419 dc_link_remove_remote_sink(aconnector->dc_link, aconnector->dc_sink);
420 dc_sink_release(aconnector->dc_sink);
421 aconnector->dc_sink = NULL;
422 aconnector->dc_link->cur_link_settings.lane_count = 0;
425 drm_connector_unregister(connector);
426 if (adev->mode_info.rfbdev)
427 drm_fb_helper_remove_one_connector(&adev->mode_info.rfbdev->helper, connector);
428 drm_connector_put(connector);
431 static void dm_dp_mst_hotplug(struct drm_dp_mst_topology_mgr *mgr)
433 struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
434 struct drm_device *dev = master->base.dev;
436 drm_kms_helper_hotplug_event(dev);
439 static void dm_dp_mst_register_connector(struct drm_connector *connector)
441 struct drm_device *dev = connector->dev;
442 struct amdgpu_device *adev = dev->dev_private;
444 if (adev->mode_info.rfbdev)
445 drm_fb_helper_add_one_connector(&adev->mode_info.rfbdev->helper, connector);
447 DRM_ERROR("adev->mode_info.rfbdev is NULL\n");
449 drm_connector_register(connector);
452 static const struct drm_dp_mst_topology_cbs dm_mst_cbs = {
453 .add_connector = dm_dp_add_mst_connector,
454 .destroy_connector = dm_dp_destroy_mst_connector,
455 .hotplug = dm_dp_mst_hotplug,
456 .register_connector = dm_dp_mst_register_connector
459 void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
460 struct amdgpu_dm_connector *aconnector)
462 aconnector->dm_dp_aux.aux.name = "dmdc";
463 aconnector->dm_dp_aux.aux.dev = dm->adev->dev;
464 aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
465 aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
467 drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
468 aconnector->mst_mgr.cbs = &dm_mst_cbs;
469 drm_dp_mst_topology_mgr_init(
470 &aconnector->mst_mgr,
472 &aconnector->dm_dp_aux.aux,
475 aconnector->connector_id);