2 * Copyright 2015 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/string.h>
27 #include <linux/acpi.h>
28 #include <linux/version.h>
29 #include <linux/i2c.h>
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/amdgpu_drm.h>
34 #include <drm/drm_edid.h>
36 #include "dm_services.h"
39 #include "amdgpu_dm.h"
40 #include "amdgpu_dm_irq.h"
42 #include "dm_helpers.h"
44 /* dm_helpers_parse_edid_caps
48 * @edid: [in] pointer to edid
49 * edid_caps: [in] pointer to edid caps
53 enum dc_edid_status dm_helpers_parse_edid_caps(
54 struct dc_context *ctx,
55 const struct dc_edid *edid,
56 struct dc_edid_caps *edid_caps)
58 struct edid *edid_buf = (struct edid *) edid->raw_edid;
66 enum dc_edid_status result = EDID_OK;
68 if (!edid_caps || !edid)
69 return EDID_BAD_INPUT;
71 if (!drm_edid_is_valid(edid_buf))
72 result = EDID_BAD_CHECKSUM;
74 edid_caps->manufacturer_id = (uint16_t) edid_buf->mfg_id[0] |
75 ((uint16_t) edid_buf->mfg_id[1])<<8;
76 edid_caps->product_id = (uint16_t) edid_buf->prod_code[0] |
77 ((uint16_t) edid_buf->prod_code[1])<<8;
78 edid_caps->serial_number = edid_buf->serial;
79 edid_caps->manufacture_week = edid_buf->mfg_week;
80 edid_caps->manufacture_year = edid_buf->mfg_year;
82 /* One of the four detailed_timings stores the monitor name. It's
83 * stored in an array of length 13. */
84 for (i = 0; i < 4; i++) {
85 if (edid_buf->detailed_timings[i].data.other_data.type == 0xfc) {
86 while (j < 13 && edid_buf->detailed_timings[i].data.other_data.data.str.str[j]) {
87 if (edid_buf->detailed_timings[i].data.other_data.data.str.str[j] == '\n')
90 edid_caps->display_name[j] =
91 edid_buf->detailed_timings[i].data.other_data.data.str.str[j];
97 edid_caps->edid_hdmi = drm_detect_hdmi_monitor(
98 (struct edid *) edid->raw_edid);
100 sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
101 if (sad_count <= 0) {
102 DRM_INFO("SADs count is: %d, don't need to read it\n",
107 edid_caps->audio_mode_count = sad_count < DC_MAX_AUDIO_DESC_COUNT ? sad_count : DC_MAX_AUDIO_DESC_COUNT;
108 for (i = 0; i < edid_caps->audio_mode_count; ++i) {
109 struct cea_sad *sad = &sads[i];
111 edid_caps->audio_modes[i].format_code = sad->format;
112 edid_caps->audio_modes[i].channel_count = sad->channels + 1;
113 edid_caps->audio_modes[i].sample_rate = sad->freq;
114 edid_caps->audio_modes[i].sample_size = sad->byte2;
117 sadb_count = drm_edid_to_speaker_allocation((struct edid *) edid->raw_edid, &sadb);
119 if (sadb_count < 0) {
120 DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sadb_count);
125 edid_caps->speaker_flags = sadb[0];
127 edid_caps->speaker_flags = DEFAULT_SPEAKER_LOCATION;
135 static void get_payload_table(
136 struct amdgpu_dm_connector *aconnector,
137 struct dp_mst_stream_allocation_table *proposed_table)
140 struct drm_dp_mst_topology_mgr *mst_mgr =
141 &aconnector->mst_port->mst_mgr;
143 mutex_lock(&mst_mgr->payload_lock);
145 proposed_table->stream_count = 0;
147 /* number of active streams */
148 for (i = 0; i < mst_mgr->max_payloads; i++) {
149 if (mst_mgr->payloads[i].num_slots == 0)
150 break; /* end of vcp_id table */
152 ASSERT(mst_mgr->payloads[i].payload_state !=
153 DP_PAYLOAD_DELETE_LOCAL);
155 if (mst_mgr->payloads[i].payload_state == DP_PAYLOAD_LOCAL ||
156 mst_mgr->payloads[i].payload_state ==
159 struct dp_mst_stream_allocation *sa =
160 &proposed_table->stream_allocations[
161 proposed_table->stream_count];
163 sa->slot_count = mst_mgr->payloads[i].num_slots;
164 sa->vcp_id = mst_mgr->proposed_vcpis[i]->vcpi;
165 proposed_table->stream_count++;
169 mutex_unlock(&mst_mgr->payload_lock);
173 * Writes payload allocation table in immediate downstream device.
175 bool dm_helpers_dp_mst_write_payload_allocation_table(
176 struct dc_context *ctx,
177 const struct dc_stream_state *stream,
178 struct dp_mst_stream_allocation_table *proposed_table,
181 struct amdgpu_dm_connector *aconnector;
182 struct drm_dp_mst_topology_mgr *mst_mgr;
183 struct drm_dp_mst_port *mst_port;
190 aconnector = stream->sink->priv;
192 if (!aconnector || !aconnector->mst_port)
195 mst_mgr = &aconnector->mst_port->mst_mgr;
197 if (!mst_mgr->mst_state)
200 mst_port = aconnector->port;
203 clock = stream->timing.pix_clk_khz;
205 switch (stream->timing.display_color_depth) {
207 case COLOR_DEPTH_666:
210 case COLOR_DEPTH_888:
213 case COLOR_DEPTH_101010:
216 case COLOR_DEPTH_121212:
219 case COLOR_DEPTH_141414:
222 case COLOR_DEPTH_161616:
232 /* TODO need to know link rate */
234 pbn = drm_dp_calc_pbn_mode(clock, bpp);
236 slots = drm_dp_find_vcpi_slots(mst_mgr, pbn);
237 ret = drm_dp_mst_allocate_vcpi(mst_mgr, mst_port, pbn, slots);
243 drm_dp_mst_reset_vcpi_slots(mst_mgr, mst_port);
246 ret = drm_dp_update_payload_part1(mst_mgr);
248 /* mst_mgr->->payloads are VC payload notify MST branch using DPCD or
249 * AUX message. The sequence is slot 1-63 allocated sequence for each
250 * stream. AMD ASIC stream slot allocation should follow the same
251 * sequence. copy DRM MST allocation to dc */
253 get_payload_table(aconnector, proposed_table);
263 * Clear payload allocation table before enable MST DP link.
265 void dm_helpers_dp_mst_clear_payload_allocation_table(
266 struct dc_context *ctx,
267 const struct dc_link *link)
271 * Polls for ACT (allocation change trigger) handled and sends
272 * ALLOCATE_PAYLOAD message.
274 bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
275 struct dc_context *ctx,
276 const struct dc_stream_state *stream)
278 struct amdgpu_dm_connector *aconnector;
279 struct drm_dp_mst_topology_mgr *mst_mgr;
282 aconnector = stream->sink->priv;
284 if (!aconnector || !aconnector->mst_port)
287 mst_mgr = &aconnector->mst_port->mst_mgr;
289 if (!mst_mgr->mst_state)
292 ret = drm_dp_check_act_status(mst_mgr);
300 bool dm_helpers_dp_mst_send_payload_allocation(
301 struct dc_context *ctx,
302 const struct dc_stream_state *stream,
305 struct amdgpu_dm_connector *aconnector;
306 struct drm_dp_mst_topology_mgr *mst_mgr;
307 struct drm_dp_mst_port *mst_port;
310 aconnector = stream->sink->priv;
312 if (!aconnector || !aconnector->mst_port)
315 mst_port = aconnector->port;
317 mst_mgr = &aconnector->mst_port->mst_mgr;
319 if (!mst_mgr->mst_state)
322 ret = drm_dp_update_payload_part2(mst_mgr);
328 drm_dp_mst_deallocate_vcpi(mst_mgr, mst_port);
333 void dm_dtn_log_begin(struct dc_context *ctx)
336 void dm_dtn_log_append_v(struct dc_context *ctx,
337 const char *pMsg, ...)
340 void dm_dtn_log_end(struct dc_context *ctx)
343 bool dm_helpers_dp_mst_start_top_mgr(
344 struct dc_context *ctx,
345 const struct dc_link *link,
348 struct amdgpu_dm_connector *aconnector = link->priv;
351 DRM_ERROR("Failed to found connector for link!");
356 DRM_INFO("DM_MST: Differing MST start on aconnector: %p [id: %d]\n",
357 aconnector, aconnector->base.base.id);
361 DRM_INFO("DM_MST: starting TM on aconnector: %p [id: %d]\n",
362 aconnector, aconnector->base.base.id);
364 return (drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true) == 0);
367 void dm_helpers_dp_mst_stop_top_mgr(
368 struct dc_context *ctx,
369 const struct dc_link *link)
371 struct amdgpu_dm_connector *aconnector = link->priv;
374 DRM_ERROR("Failed to found connector for link!");
378 DRM_INFO("DM_MST: stopping TM on aconnector: %p [id: %d]\n",
379 aconnector, aconnector->base.base.id);
381 if (aconnector->mst_mgr.mst_state == true)
382 drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, false);
385 bool dm_helpers_dp_read_dpcd(
386 struct dc_context *ctx,
387 const struct dc_link *link,
393 struct amdgpu_dm_connector *aconnector = link->priv;
396 DRM_ERROR("Failed to found connector for link!");
400 return drm_dp_dpcd_read(&aconnector->dm_dp_aux.aux, address,
404 bool dm_helpers_dp_write_dpcd(
405 struct dc_context *ctx,
406 const struct dc_link *link,
411 struct amdgpu_dm_connector *aconnector = link->priv;
414 DRM_ERROR("Failed to found connector for link!");
418 return drm_dp_dpcd_write(&aconnector->dm_dp_aux.aux,
419 address, (uint8_t *)data, size) > 0;
422 bool dm_helpers_submit_i2c(
423 struct dc_context *ctx,
424 const struct dc_link *link,
425 struct i2c_command *cmd)
427 struct amdgpu_dm_connector *aconnector = link->priv;
428 struct i2c_msg *msgs;
430 int num = cmd->number_of_payloads;
434 DRM_ERROR("Failed to found connector for link!");
438 msgs = kcalloc(num, sizeof(struct i2c_msg), GFP_KERNEL);
443 for (i = 0; i < num; i++) {
444 msgs[i].flags = cmd->payloads[i].write ? 0 : I2C_M_RD;
445 msgs[i].addr = cmd->payloads[i].address;
446 msgs[i].len = cmd->payloads[i].length;
447 msgs[i].buf = cmd->payloads[i].data;
450 result = i2c_transfer(&aconnector->i2c->base, msgs, num) == num;
457 enum dc_edid_status dm_helpers_read_local_edid(
458 struct dc_context *ctx,
459 struct dc_link *link,
460 struct dc_sink *sink)
462 struct amdgpu_dm_connector *aconnector = link->priv;
463 struct i2c_adapter *ddc;
465 enum dc_edid_status edid_status;
469 ddc = &aconnector->dm_dp_aux.aux.ddc;
471 ddc = &aconnector->i2c->base;
473 /* some dongles read edid incorrectly the first time,
474 * do check sum and retry to make sure read correct edid.
478 edid = drm_get_edid(&aconnector->base, ddc);
481 return EDID_NO_RESPONSE;
483 sink->dc_edid.length = EDID_LENGTH * (edid->extensions + 1);
484 memmove(sink->dc_edid.raw_edid, (uint8_t *)edid, sink->dc_edid.length);
486 /* We don't need the original edid anymore */
489 edid_status = dm_helpers_parse_edid_caps(
494 } while (edid_status == EDID_BAD_CHECKSUM && --retry > 0);
496 if (edid_status != EDID_OK)
497 DRM_ERROR("EDID err: %d, on connector: %s",
499 aconnector->base.name);
504 void dm_set_dcn_clocks(struct dc_context *ctx, struct dc_clocks *clks)
506 /* TODO: something */