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 #include "i2caux_interface.h"
39 #if defined(CONFIG_DEBUG_FS)
40 #include "amdgpu_dm_debugfs.h"
42 /* #define TRACE_DPCD */
45 #define SIDE_BAND_MSG(address) (address >= DP_SIDEBAND_MSG_DOWN_REQ_BASE && address < DP_SINK_COUNT_ESI)
47 static inline char *side_band_msg_type_to_str(uint32_t address)
49 static char str[10] = {0};
51 if (address < DP_SIDEBAND_MSG_UP_REP_BASE)
52 strcpy(str, "DOWN_REQ");
53 else if (address < DP_SIDEBAND_MSG_DOWN_REP_BASE)
54 strcpy(str, "UP_REP");
55 else if (address < DP_SIDEBAND_MSG_UP_REQ_BASE)
56 strcpy(str, "DOWN_REP");
58 strcpy(str, "UP_REQ");
63 static void log_dpcd(uint8_t type,
69 DRM_DEBUG_KMS("Op: %s, addr: %04x, SideBand Msg: %s, Op res: %s\n",
70 (type == DP_AUX_NATIVE_READ) ||
71 (type == DP_AUX_I2C_READ) ?
74 SIDE_BAND_MSG(address) ?
75 side_band_msg_type_to_str(address) : "Nop",
79 print_hex_dump(KERN_INFO, "Body: ", DUMP_PREFIX_NONE, 16, 1, data, size, false);
84 static ssize_t dm_dp_aux_transfer(struct drm_dp_aux *aux,
85 struct drm_dp_aux_msg *msg)
88 struct aux_payload payload;
89 enum aux_channel_operation_result operation_result;
91 if (WARN_ON(msg->size > 16))
94 payload.address = msg->address;
95 payload.data = msg->buffer;
96 payload.length = msg->size;
97 payload.reply = &msg->reply;
98 payload.i2c_over_aux = (msg->request & DP_AUX_NATIVE_WRITE) == 0;
99 payload.write = (msg->request & DP_AUX_I2C_READ) == 0;
100 payload.mot = (msg->request & DP_AUX_I2C_MOT) != 0;
101 payload.defer_delay = 0;
103 result = dc_link_aux_transfer_raw(TO_DM_AUX(aux)->ddc_service, &payload,
110 switch (operation_result) {
111 case AUX_CHANNEL_OPERATION_SUCCEEDED:
113 case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON:
114 case AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN:
117 case AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY:
118 case AUX_CHANNEL_OPERATION_FAILED_ENGINE_ACQUIRE:
121 case AUX_CHANNEL_OPERATION_FAILED_TIMEOUT:
130 dm_dp_mst_connector_destroy(struct drm_connector *connector)
132 struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector);
133 struct amdgpu_encoder *amdgpu_encoder = amdgpu_dm_connector->mst_encoder;
135 kfree(amdgpu_dm_connector->edid);
136 amdgpu_dm_connector->edid = NULL;
138 drm_encoder_cleanup(&amdgpu_encoder->base);
139 kfree(amdgpu_encoder);
140 drm_connector_cleanup(connector);
141 drm_dp_mst_put_port_malloc(amdgpu_dm_connector->port);
142 kfree(amdgpu_dm_connector);
146 amdgpu_dm_mst_connector_late_register(struct drm_connector *connector)
148 struct amdgpu_dm_connector *amdgpu_dm_connector =
149 to_amdgpu_dm_connector(connector);
150 struct drm_dp_mst_port *port = amdgpu_dm_connector->port;
152 #if defined(CONFIG_DEBUG_FS)
153 connector_debugfs_init(amdgpu_dm_connector);
154 amdgpu_dm_connector->debugfs_dpcd_address = 0;
155 amdgpu_dm_connector->debugfs_dpcd_size = 0;
158 return drm_dp_mst_connector_late_register(connector, port);
162 amdgpu_dm_mst_connector_early_unregister(struct drm_connector *connector)
164 struct amdgpu_dm_connector *amdgpu_dm_connector =
165 to_amdgpu_dm_connector(connector);
166 struct drm_dp_mst_port *port = amdgpu_dm_connector->port;
168 drm_dp_mst_connector_early_unregister(connector, port);
171 static const struct drm_connector_funcs dm_dp_mst_connector_funcs = {
172 .fill_modes = drm_helper_probe_single_connector_modes,
173 .destroy = dm_dp_mst_connector_destroy,
174 .reset = amdgpu_dm_connector_funcs_reset,
175 .atomic_duplicate_state = amdgpu_dm_connector_atomic_duplicate_state,
176 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
177 .atomic_set_property = amdgpu_dm_connector_atomic_set_property,
178 .atomic_get_property = amdgpu_dm_connector_atomic_get_property,
179 .late_register = amdgpu_dm_mst_connector_late_register,
180 .early_unregister = amdgpu_dm_mst_connector_early_unregister,
183 static int dm_dp_mst_get_modes(struct drm_connector *connector)
185 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
189 return drm_add_edid_modes(connector, NULL);
191 if (!aconnector->edid) {
193 edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port);
196 drm_connector_update_edid_property(
202 aconnector->edid = edid;
205 if (aconnector->dc_sink && aconnector->dc_sink->sink_signal == SIGNAL_TYPE_VIRTUAL) {
206 dc_sink_release(aconnector->dc_sink);
207 aconnector->dc_sink = NULL;
210 if (!aconnector->dc_sink) {
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 };
215 dc_sink = dc_link_add_remote_sink(
217 (uint8_t *)aconnector->edid,
218 (aconnector->edid->extensions + 1) * EDID_LENGTH,
221 dc_sink->priv = aconnector;
222 /* dc_link_add_remote_sink returns a new reference */
223 aconnector->dc_sink = dc_sink;
225 if (aconnector->dc_sink)
226 amdgpu_dm_update_freesync_caps(
227 connector, aconnector->edid);
231 drm_connector_update_edid_property(
232 &aconnector->base, aconnector->edid);
234 ret = drm_add_edid_modes(connector, aconnector->edid);
239 static struct drm_encoder *
240 dm_mst_atomic_best_encoder(struct drm_connector *connector,
241 struct drm_connector_state *connector_state)
243 return &to_amdgpu_dm_connector(connector)->mst_encoder->base;
247 dm_dp_mst_detect(struct drm_connector *connector,
248 struct drm_modeset_acquire_ctx *ctx, bool force)
250 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
251 struct amdgpu_dm_connector *master = aconnector->mst_port;
253 return drm_dp_mst_detect_port(connector, ctx, &master->mst_mgr,
257 static int dm_dp_mst_atomic_check(struct drm_connector *connector,
258 struct drm_atomic_state *state)
260 struct drm_connector_state *new_conn_state =
261 drm_atomic_get_new_connector_state(state, connector);
262 struct drm_connector_state *old_conn_state =
263 drm_atomic_get_old_connector_state(state, connector);
264 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
265 struct drm_crtc_state *new_crtc_state;
266 struct drm_dp_mst_topology_mgr *mst_mgr;
267 struct drm_dp_mst_port *mst_port;
269 mst_port = aconnector->port;
270 mst_mgr = &aconnector->mst_port->mst_mgr;
272 if (!old_conn_state->crtc)
275 if (new_conn_state->crtc) {
276 new_crtc_state = drm_atomic_get_new_crtc_state(state, new_conn_state->crtc);
277 if (!new_crtc_state ||
278 !drm_atomic_crtc_needs_modeset(new_crtc_state) ||
279 new_crtc_state->enable)
283 return drm_dp_atomic_release_vcpi_slots(state,
288 static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs = {
289 .get_modes = dm_dp_mst_get_modes,
290 .mode_valid = amdgpu_dm_connector_mode_valid,
291 .atomic_best_encoder = dm_mst_atomic_best_encoder,
292 .detect_ctx = dm_dp_mst_detect,
293 .atomic_check = dm_dp_mst_atomic_check,
296 static void amdgpu_dm_encoder_destroy(struct drm_encoder *encoder)
298 drm_encoder_cleanup(encoder);
302 static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs = {
303 .destroy = amdgpu_dm_encoder_destroy,
306 static struct amdgpu_encoder *
307 dm_dp_create_fake_mst_encoder(struct amdgpu_dm_connector *connector)
309 struct drm_device *dev = connector->base.dev;
310 struct amdgpu_device *adev = dev->dev_private;
311 struct amdgpu_encoder *amdgpu_encoder;
312 struct drm_encoder *encoder;
314 amdgpu_encoder = kzalloc(sizeof(*amdgpu_encoder), GFP_KERNEL);
318 encoder = &amdgpu_encoder->base;
319 encoder->possible_crtcs = amdgpu_dm_get_encoder_crtc_mask(adev);
323 &amdgpu_encoder->base,
324 &amdgpu_dm_encoder_funcs,
325 DRM_MODE_ENCODER_DPMST,
328 drm_encoder_helper_add(encoder, &amdgpu_dm_encoder_helper_funcs);
330 return amdgpu_encoder;
333 static struct drm_connector *
334 dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
335 struct drm_dp_mst_port *port,
336 const char *pathprop)
338 struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
339 struct drm_device *dev = master->base.dev;
340 struct amdgpu_device *adev = dev->dev_private;
341 struct amdgpu_dm_connector *aconnector;
342 struct drm_connector *connector;
344 aconnector = kzalloc(sizeof(*aconnector), GFP_KERNEL);
348 connector = &aconnector->base;
349 aconnector->port = port;
350 aconnector->mst_port = master;
352 if (drm_connector_init(
355 &dm_dp_mst_connector_funcs,
356 DRM_MODE_CONNECTOR_DisplayPort)) {
360 drm_connector_helper_add(connector, &dm_dp_mst_connector_helper_funcs);
362 amdgpu_dm_connector_init_helper(
365 DRM_MODE_CONNECTOR_DisplayPort,
367 master->connector_id);
369 aconnector->mst_encoder = dm_dp_create_fake_mst_encoder(master);
370 drm_connector_attach_encoder(&aconnector->base,
371 &aconnector->mst_encoder->base);
373 drm_object_attach_property(
375 dev->mode_config.path_property,
377 drm_object_attach_property(
379 dev->mode_config.tile_property,
382 drm_connector_set_path_property(connector, pathprop);
385 * Initialize connector state before adding the connectror to drm and
388 amdgpu_dm_connector_funcs_reset(connector);
390 DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n",
391 aconnector, connector->base.id, aconnector->mst_port);
393 drm_dp_mst_get_port_malloc(port);
395 DRM_DEBUG_KMS(":%d\n", connector->base.id);
400 static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr,
401 struct drm_connector *connector)
403 struct amdgpu_dm_connector *master = container_of(mgr, struct amdgpu_dm_connector, mst_mgr);
404 struct drm_device *dev = master->base.dev;
405 struct amdgpu_device *adev = dev->dev_private;
406 struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
408 DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n",
409 aconnector, connector->base.id, aconnector->mst_port);
411 if (aconnector->dc_sink) {
412 amdgpu_dm_update_freesync_caps(connector, NULL);
413 dc_link_remove_remote_sink(aconnector->dc_link,
414 aconnector->dc_sink);
415 dc_sink_release(aconnector->dc_sink);
416 aconnector->dc_sink = NULL;
419 drm_connector_unregister(connector);
420 if (adev->mode_info.rfbdev)
421 drm_fb_helper_remove_one_connector(&adev->mode_info.rfbdev->helper, connector);
422 drm_connector_put(connector);
425 static void dm_dp_mst_register_connector(struct drm_connector *connector)
427 struct drm_device *dev = connector->dev;
428 struct amdgpu_device *adev = dev->dev_private;
430 if (adev->mode_info.rfbdev)
431 drm_fb_helper_add_one_connector(&adev->mode_info.rfbdev->helper, connector);
433 DRM_ERROR("adev->mode_info.rfbdev is NULL\n");
435 drm_connector_register(connector);
438 static const struct drm_dp_mst_topology_cbs dm_mst_cbs = {
439 .add_connector = dm_dp_add_mst_connector,
440 .destroy_connector = dm_dp_destroy_mst_connector,
441 .register_connector = dm_dp_mst_register_connector
444 void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
445 struct amdgpu_dm_connector *aconnector)
447 aconnector->dm_dp_aux.aux.name = "dmdc";
448 aconnector->dm_dp_aux.aux.dev = aconnector->base.kdev;
449 aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
450 aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
452 drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
453 drm_dp_cec_register_connector(&aconnector->dm_dp_aux.aux,
456 if (aconnector->base.connector_type == DRM_MODE_CONNECTOR_eDP)
459 aconnector->mst_mgr.cbs = &dm_mst_cbs;
460 drm_dp_mst_topology_mgr_init(
461 &aconnector->mst_mgr,
463 &aconnector->dm_dp_aux.aux,
466 aconnector->connector_id);