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"
40 /* #define TRACE_DPCD */
43 #define SIDE_BAND_MSG(address) (address >= DP_SIDEBAND_MSG_DOWN_REQ_BASE && address < DP_SINK_COUNT_ESI)
45 static inline char *side_band_msg_type_to_str(uint32_t address
)
47 static char str
[10] = {0};
49 if (address
< DP_SIDEBAND_MSG_UP_REP_BASE
)
50 strcpy(str
, "DOWN_REQ");
51 else if (address
< DP_SIDEBAND_MSG_DOWN_REP_BASE
)
52 strcpy(str
, "UP_REP");
53 else if (address
< DP_SIDEBAND_MSG_UP_REQ_BASE
)
54 strcpy(str
, "DOWN_REP");
56 strcpy(str
, "UP_REQ");
61 static void log_dpcd(uint8_t type
,
67 DRM_DEBUG_KMS("Op: %s, addr: %04x, SideBand Msg: %s, Op res: %s\n",
68 (type
== DP_AUX_NATIVE_READ
) ||
69 (type
== DP_AUX_I2C_READ
) ?
72 SIDE_BAND_MSG(address
) ?
73 side_band_msg_type_to_str(address
) : "Nop",
77 print_hex_dump(KERN_INFO
, "Body: ", DUMP_PREFIX_NONE
, 16, 1, data
, size
, false);
82 static ssize_t
dm_dp_aux_transfer(struct drm_dp_aux
*aux
,
83 struct drm_dp_aux_msg
*msg
)
86 struct aux_payload payload
;
88 if (WARN_ON(msg
->size
> 16))
91 payload
.address
= msg
->address
;
92 payload
.data
= msg
->buffer
;
93 payload
.length
= msg
->size
;
94 payload
.reply
= &msg
->reply
;
95 payload
.i2c_over_aux
= (msg
->request
& DP_AUX_NATIVE_WRITE
) == 0;
96 payload
.write
= (msg
->request
& DP_AUX_I2C_READ
) == 0;
97 payload
.mot
= (msg
->request
& DP_AUX_I2C_MOT
) != 0;
98 payload
.defer_delay
= 0;
100 result
= dc_link_aux_transfer(TO_DM_AUX(aux
)->ddc_service
, &payload
);
105 if (result
< 0) /* DC doesn't know about kernel error codes */
111 static enum drm_connector_status
112 dm_dp_mst_detect(struct drm_connector
*connector
, bool force
)
114 struct amdgpu_dm_connector
*aconnector
= to_amdgpu_dm_connector(connector
);
115 struct amdgpu_dm_connector
*master
= aconnector
->mst_port
;
117 enum drm_connector_status status
=
118 drm_dp_mst_detect_port(
127 dm_dp_mst_connector_destroy(struct drm_connector
*connector
)
129 struct amdgpu_dm_connector
*amdgpu_dm_connector
= to_amdgpu_dm_connector(connector
);
130 struct amdgpu_encoder
*amdgpu_encoder
= amdgpu_dm_connector
->mst_encoder
;
132 if (amdgpu_dm_connector
->edid
) {
133 kfree(amdgpu_dm_connector
->edid
);
134 amdgpu_dm_connector
->edid
= NULL
;
137 drm_encoder_cleanup(&amdgpu_encoder
->base
);
138 kfree(amdgpu_encoder
);
139 drm_connector_cleanup(connector
);
140 drm_dp_mst_put_port_malloc(amdgpu_dm_connector
->port
);
141 kfree(amdgpu_dm_connector
);
144 static const struct drm_connector_funcs dm_dp_mst_connector_funcs
= {
145 .detect
= dm_dp_mst_detect
,
146 .fill_modes
= drm_helper_probe_single_connector_modes
,
147 .destroy
= dm_dp_mst_connector_destroy
,
148 .reset
= amdgpu_dm_connector_funcs_reset
,
149 .atomic_duplicate_state
= amdgpu_dm_connector_atomic_duplicate_state
,
150 .atomic_destroy_state
= drm_atomic_helper_connector_destroy_state
,
151 .atomic_set_property
= amdgpu_dm_connector_atomic_set_property
,
152 .atomic_get_property
= amdgpu_dm_connector_atomic_get_property
155 static int dm_dp_mst_get_modes(struct drm_connector
*connector
)
157 struct amdgpu_dm_connector
*aconnector
= to_amdgpu_dm_connector(connector
);
161 return drm_add_edid_modes(connector
, NULL
);
163 if (!aconnector
->edid
) {
165 edid
= drm_dp_mst_get_edid(connector
, &aconnector
->mst_port
->mst_mgr
, aconnector
->port
);
168 drm_connector_update_edid_property(
174 aconnector
->edid
= edid
;
177 if (!aconnector
->dc_sink
) {
178 struct dc_sink
*dc_sink
;
179 struct dc_sink_init_data init_params
= {
180 .link
= aconnector
->dc_link
,
181 .sink_signal
= SIGNAL_TYPE_DISPLAY_PORT_MST
};
182 dc_sink
= dc_link_add_remote_sink(
184 (uint8_t *)aconnector
->edid
,
185 (aconnector
->edid
->extensions
+ 1) * EDID_LENGTH
,
188 dc_sink
->priv
= aconnector
;
189 aconnector
->dc_sink
= dc_sink
;
191 if (aconnector
->dc_sink
)
192 amdgpu_dm_update_freesync_caps(
193 connector
, aconnector
->edid
);
197 drm_connector_update_edid_property(
198 &aconnector
->base
, aconnector
->edid
);
200 ret
= drm_add_edid_modes(connector
, aconnector
->edid
);
205 static struct drm_encoder
*dm_mst_best_encoder(struct drm_connector
*connector
)
207 struct amdgpu_dm_connector
*amdgpu_dm_connector
= to_amdgpu_dm_connector(connector
);
209 return &amdgpu_dm_connector
->mst_encoder
->base
;
212 static const struct drm_connector_helper_funcs dm_dp_mst_connector_helper_funcs
= {
213 .get_modes
= dm_dp_mst_get_modes
,
214 .mode_valid
= amdgpu_dm_connector_mode_valid
,
215 .best_encoder
= dm_mst_best_encoder
,
218 static void amdgpu_dm_encoder_destroy(struct drm_encoder
*encoder
)
220 drm_encoder_cleanup(encoder
);
224 static const struct drm_encoder_funcs amdgpu_dm_encoder_funcs
= {
225 .destroy
= amdgpu_dm_encoder_destroy
,
228 static struct amdgpu_encoder
*
229 dm_dp_create_fake_mst_encoder(struct amdgpu_dm_connector
*connector
)
231 struct drm_device
*dev
= connector
->base
.dev
;
232 struct amdgpu_device
*adev
= dev
->dev_private
;
233 struct amdgpu_encoder
*amdgpu_encoder
;
234 struct drm_encoder
*encoder
;
236 amdgpu_encoder
= kzalloc(sizeof(*amdgpu_encoder
), GFP_KERNEL
);
240 encoder
= &amdgpu_encoder
->base
;
241 encoder
->possible_crtcs
= amdgpu_dm_get_encoder_crtc_mask(adev
);
245 &amdgpu_encoder
->base
,
246 &amdgpu_dm_encoder_funcs
,
247 DRM_MODE_ENCODER_DPMST
,
250 drm_encoder_helper_add(encoder
, &amdgpu_dm_encoder_helper_funcs
);
252 return amdgpu_encoder
;
255 static struct drm_connector
*
256 dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr
*mgr
,
257 struct drm_dp_mst_port
*port
,
258 const char *pathprop
)
260 struct amdgpu_dm_connector
*master
= container_of(mgr
, struct amdgpu_dm_connector
, mst_mgr
);
261 struct drm_device
*dev
= master
->base
.dev
;
262 struct amdgpu_device
*adev
= dev
->dev_private
;
263 struct amdgpu_dm_connector
*aconnector
;
264 struct drm_connector
*connector
;
266 aconnector
= kzalloc(sizeof(*aconnector
), GFP_KERNEL
);
270 connector
= &aconnector
->base
;
271 aconnector
->port
= port
;
272 aconnector
->mst_port
= master
;
274 if (drm_connector_init(
277 &dm_dp_mst_connector_funcs
,
278 DRM_MODE_CONNECTOR_DisplayPort
)) {
282 drm_connector_helper_add(connector
, &dm_dp_mst_connector_helper_funcs
);
284 amdgpu_dm_connector_init_helper(
287 DRM_MODE_CONNECTOR_DisplayPort
,
289 master
->connector_id
);
291 aconnector
->mst_encoder
= dm_dp_create_fake_mst_encoder(master
);
292 drm_connector_attach_encoder(&aconnector
->base
,
293 &aconnector
->mst_encoder
->base
);
295 drm_object_attach_property(
297 dev
->mode_config
.path_property
,
299 drm_object_attach_property(
301 dev
->mode_config
.tile_property
,
304 drm_connector_set_path_property(connector
, pathprop
);
307 * Initialize connector state before adding the connectror to drm and
310 amdgpu_dm_connector_funcs_reset(connector
);
312 DRM_INFO("DM_MST: added connector: %p [id: %d] [master: %p]\n",
313 aconnector
, connector
->base
.id
, aconnector
->mst_port
);
315 drm_dp_mst_get_port_malloc(port
);
317 DRM_DEBUG_KMS(":%d\n", connector
->base
.id
);
322 static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr
*mgr
,
323 struct drm_connector
*connector
)
325 struct amdgpu_dm_connector
*master
= container_of(mgr
, struct amdgpu_dm_connector
, mst_mgr
);
326 struct drm_device
*dev
= master
->base
.dev
;
327 struct amdgpu_device
*adev
= dev
->dev_private
;
328 struct amdgpu_dm_connector
*aconnector
= to_amdgpu_dm_connector(connector
);
330 DRM_INFO("DM_MST: Disabling connector: %p [id: %d] [master: %p]\n",
331 aconnector
, connector
->base
.id
, aconnector
->mst_port
);
333 if (aconnector
->dc_sink
) {
334 amdgpu_dm_update_freesync_caps(connector
, NULL
);
335 dc_link_remove_remote_sink(aconnector
->dc_link
,
336 aconnector
->dc_sink
);
337 dc_sink_release(aconnector
->dc_sink
);
338 aconnector
->dc_sink
= NULL
;
341 drm_connector_unregister(connector
);
342 if (adev
->mode_info
.rfbdev
)
343 drm_fb_helper_remove_one_connector(&adev
->mode_info
.rfbdev
->helper
, connector
);
344 drm_connector_put(connector
);
347 static void dm_dp_mst_register_connector(struct drm_connector
*connector
)
349 struct drm_device
*dev
= connector
->dev
;
350 struct amdgpu_device
*adev
= dev
->dev_private
;
352 if (adev
->mode_info
.rfbdev
)
353 drm_fb_helper_add_one_connector(&adev
->mode_info
.rfbdev
->helper
, connector
);
355 DRM_ERROR("adev->mode_info.rfbdev is NULL\n");
357 drm_connector_register(connector
);
360 static const struct drm_dp_mst_topology_cbs dm_mst_cbs
= {
361 .add_connector
= dm_dp_add_mst_connector
,
362 .destroy_connector
= dm_dp_destroy_mst_connector
,
363 .register_connector
= dm_dp_mst_register_connector
366 void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager
*dm
,
367 struct amdgpu_dm_connector
*aconnector
)
369 aconnector
->dm_dp_aux
.aux
.name
= "dmdc";
370 aconnector
->dm_dp_aux
.aux
.dev
= dm
->adev
->dev
;
371 aconnector
->dm_dp_aux
.aux
.transfer
= dm_dp_aux_transfer
;
372 aconnector
->dm_dp_aux
.ddc_service
= aconnector
->dc_link
->ddc
;
374 drm_dp_aux_register(&aconnector
->dm_dp_aux
.aux
);
375 drm_dp_cec_register_connector(&aconnector
->dm_dp_aux
.aux
,
376 aconnector
->base
.name
, dm
->adev
->dev
);
377 aconnector
->mst_mgr
.cbs
= &dm_mst_cbs
;
378 drm_dp_mst_topology_mgr_init(
379 &aconnector
->mst_mgr
,
381 &aconnector
->dm_dp_aux
.aux
,
384 aconnector
->connector_id
);