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 static int dm_dp_mst_get_modes(struct drm_connector
*connector
)
210 struct amdgpu_dm_connector
*aconnector
= to_amdgpu_dm_connector(connector
);
214 return drm_add_edid_modes(connector
, NULL
);
216 if (!aconnector
->edid
) {
218 edid
= drm_dp_mst_get_edid(connector
, &aconnector
->mst_port
->mst_mgr
, aconnector
->port
);
221 drm_connector_update_edid_property(
227 aconnector
->edid
= edid
;
230 if (!aconnector
->dc_sink
) {
231 struct dc_sink
*dc_sink
;
232 struct dc_sink_init_data init_params
= {
233 .link
= aconnector
->dc_link
,
234 .sink_signal
= SIGNAL_TYPE_DISPLAY_PORT_MST
};
235 dc_sink
= dc_link_add_remote_sink(
237 (uint8_t *)aconnector
->edid
,
238 (aconnector
->edid
->extensions
+ 1) * EDID_LENGTH
,
241 dc_sink
->priv
= aconnector
;
242 aconnector
->dc_sink
= dc_sink
;
244 if (aconnector
->dc_sink
)
245 amdgpu_dm_update_freesync_caps(
246 connector
, aconnector
->edid
);
250 drm_connector_update_edid_property(
251 &aconnector
->base
, aconnector
->edid
);
253 ret
= drm_add_edid_modes(connector
, aconnector
->edid
);
258 static struct drm_encoder
*dm_mst_best_encoder(struct drm_connector
*connector
)
260 struct amdgpu_dm_connector
*amdgpu_dm_connector
= to_amdgpu_dm_connector(connector
);
262 return &amdgpu_dm_connector
->mst_encoder
->base
;
265 static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs
= {
266 .get_modes
= dm_dp_mst_get_modes
,
267 .mode_valid
= amdgpu_dm_connector_mode_valid
,
268 .best_encoder
= dm_mst_best_encoder
,
271 static void amdgpu_dm_encoder_destroy(struct drm_encoder
*encoder
)
273 drm_encoder_cleanup(encoder
);
277 static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs
= {
278 .destroy
= amdgpu_dm_encoder_destroy
,
281 static struct amdgpu_encoder
*
282 dm_dp_create_fake_mst_encoder(struct amdgpu_dm_connector
*connector
)
284 struct drm_device
*dev
= connector
->base
.dev
;
285 struct amdgpu_device
*adev
= dev
->dev_private
;
286 struct amdgpu_encoder
*amdgpu_encoder
;
287 struct drm_encoder
*encoder
;
289 amdgpu_encoder
= kzalloc(sizeof(*amdgpu_encoder
), GFP_KERNEL
);
293 encoder
= &amdgpu_encoder
->base
;
294 encoder
->possible_crtcs
= amdgpu_dm_get_encoder_crtc_mask(adev
);
298 &amdgpu_encoder
->base
,
299 &amdgpu_dm_encoder_funcs
,
300 DRM_MODE_ENCODER_DPMST
,
303 drm_encoder_helper_add(encoder
, &amdgpu_dm_encoder_helper_funcs
);
305 return amdgpu_encoder
;
308 static struct drm_connector
*
309 dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr
*mgr
,
310 struct drm_dp_mst_port
*port
,
311 const char *pathprop
)
313 struct amdgpu_dm_connector
*master
= container_of(mgr
, struct amdgpu_dm_connector
, mst_mgr
);
314 struct drm_device
*dev
= master
->base
.dev
;
315 struct amdgpu_device
*adev
= dev
->dev_private
;
316 struct amdgpu_dm_connector
*aconnector
;
317 struct drm_connector
*connector
;
319 aconnector
= kzalloc(sizeof(*aconnector
), GFP_KERNEL
);
323 connector
= &aconnector
->base
;
324 aconnector
->port
= port
;
325 aconnector
->mst_port
= master
;
327 if (drm_connector_init(
330 &dm_dp_mst_connector_funcs
,
331 DRM_MODE_CONNECTOR_DisplayPort
)) {
335 drm_connector_helper_add(connector
, &dm_dp_mst_connector_helper_funcs
);
337 amdgpu_dm_connector_init_helper(
340 DRM_MODE_CONNECTOR_DisplayPort
,
342 master
->connector_id
);
344 aconnector
->mst_encoder
= dm_dp_create_fake_mst_encoder(master
);
345 drm_connector_attach_encoder(&aconnector
->base
,
346 &aconnector
->mst_encoder
->base
);
348 drm_object_attach_property(
350 dev
->mode_config
.path_property
,
352 drm_object_attach_property(
354 dev
->mode_config
.tile_property
,
357 drm_connector_set_path_property(connector
, pathprop
);
360 * Initialize connector state before adding the connectror to drm and
363 amdgpu_dm_connector_funcs_reset(connector
);
365 DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n",
366 aconnector
, connector
->base
.id
, aconnector
->mst_port
);
368 DRM_DEBUG_KMS(":%d\n", connector
->base
.id
);
373 static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr
*mgr
,
374 struct drm_connector
*connector
)
376 struct amdgpu_dm_connector
*master
= container_of(mgr
, struct amdgpu_dm_connector
, mst_mgr
);
377 struct drm_device
*dev
= master
->base
.dev
;
378 struct amdgpu_device
*adev
= dev
->dev_private
;
379 struct amdgpu_dm_connector
*aconnector
= to_amdgpu_dm_connector(connector
);
381 DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n",
382 aconnector
, connector
->base
.id
, aconnector
->mst_port
);
384 aconnector
->port
= NULL
;
385 if (aconnector
->dc_sink
) {
386 amdgpu_dm_update_freesync_caps(connector
, NULL
);
387 dc_link_remove_remote_sink(aconnector
->dc_link
, aconnector
->dc_sink
);
388 dc_sink_release(aconnector
->dc_sink
);
389 aconnector
->dc_sink
= NULL
;
392 drm_connector_unregister(connector
);
393 if (adev
->mode_info
.rfbdev
)
394 drm_fb_helper_remove_one_connector(&adev
->mode_info
.rfbdev
->helper
, connector
);
395 drm_connector_put(connector
);
398 static void dm_dp_mst_hotplug(struct drm_dp_mst_topology_mgr
*mgr
)
400 struct amdgpu_dm_connector
*master
= container_of(mgr
, struct amdgpu_dm_connector
, mst_mgr
);
401 struct drm_device
*dev
= master
->base
.dev
;
403 drm_kms_helper_hotplug_event(dev
);
406 static void dm_dp_mst_register_connector(struct drm_connector
*connector
)
408 struct drm_device
*dev
= connector
->dev
;
409 struct amdgpu_device
*adev
= dev
->dev_private
;
411 if (adev
->mode_info
.rfbdev
)
412 drm_fb_helper_add_one_connector(&adev
->mode_info
.rfbdev
->helper
, connector
);
414 DRM_ERROR("adev->mode_info.rfbdev is NULL\n");
416 drm_connector_register(connector
);
419 static const struct drm_dp_mst_topology_cbs dm_mst_cbs
= {
420 .add_connector
= dm_dp_add_mst_connector
,
421 .destroy_connector
= dm_dp_destroy_mst_connector
,
422 .hotplug
= dm_dp_mst_hotplug
,
423 .register_connector
= dm_dp_mst_register_connector
426 void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager
*dm
,
427 struct amdgpu_dm_connector
*aconnector
)
429 aconnector
->dm_dp_aux
.aux
.name
= "dmdc";
430 aconnector
->dm_dp_aux
.aux
.dev
= dm
->adev
->dev
;
431 aconnector
->dm_dp_aux
.aux
.transfer
= dm_dp_aux_transfer
;
432 aconnector
->dm_dp_aux
.ddc_service
= aconnector
->dc_link
->ddc
;
434 drm_dp_aux_register(&aconnector
->dm_dp_aux
.aux
);
435 drm_dp_cec_register_connector(&aconnector
->dm_dp_aux
.aux
,
436 aconnector
->base
.name
, dm
->adev
->dev
);
437 aconnector
->mst_mgr
.cbs
= &dm_mst_cbs
;
438 drm_dp_mst_topology_mgr_init(
439 &aconnector
->mst_mgr
,
441 &aconnector
->dm_dp_aux
.aux
,
444 aconnector
->connector_id
);