Lines Matching +full:slave +full:- +full:addr
1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2 // Copyright(c) 2015-18 Intel Corporation.
5 * stream.c - SoundWire Bus stream operations.
63 struct sdw_slave *slave,
71 if (bus->params.next_bank) {
72 addr1 = SDW_DPN_OFFSETCTRL2_B1(t_params->port_num);
73 addr2 = SDW_DPN_BLOCKCTRL3_B1(t_params->port_num);
74 addr3 = SDW_DPN_SAMPLECTRL2_B1(t_params->port_num);
75 addr4 = SDW_DPN_HCTRL_B1(t_params->port_num);
77 addr1 = SDW_DPN_OFFSETCTRL2_B0(t_params->port_num);
78 addr2 = SDW_DPN_BLOCKCTRL3_B0(t_params->port_num);
79 addr3 = SDW_DPN_SAMPLECTRL2_B0(t_params->port_num);
80 addr4 = SDW_DPN_HCTRL_B0(t_params->port_num);
84 ret = sdw_write_no_pm(slave, addr1, t_params->offset2);
86 dev_err(bus->dev, "DPN_OffsetCtrl2 register write failed\n");
91 ret = sdw_write_no_pm(slave, addr2, t_params->blk_pkg_mode);
93 dev_err(bus->dev, "DPN_BlockCtrl3 register write failed\n");
106 wbuf = FIELD_GET(SDW_DPN_SAMPLECTRL_HIGH, t_params->sample_interval - 1);
108 ret = sdw_write_no_pm(slave, addr3, wbuf);
110 dev_err(bus->dev, "DPN_SampleCtrl2 register write failed\n");
115 wbuf = FIELD_PREP(SDW_DPN_HCTRL_HSTART, t_params->hstart);
116 wbuf |= FIELD_PREP(SDW_DPN_HCTRL_HSTOP, t_params->hstop);
118 ret = sdw_write_no_pm(slave, addr4, wbuf);
120 dev_err(bus->dev, "DPN_HCtrl register write failed\n");
129 struct sdw_transport_params *t_params = &p_rt->transport_params;
130 struct sdw_port_params *p_params = &p_rt->port_params;
131 struct sdw_slave_prop *slave_prop = &s_rt->slave->prop;
137 if (s_rt->slave->is_mockup_device)
140 dpn_prop = sdw_get_slave_dpn_prop(s_rt->slave,
141 s_rt->direction,
142 t_params->port_num);
144 return -EINVAL;
146 addr1 = SDW_DPN_PORTCTRL(t_params->port_num);
147 addr2 = SDW_DPN_BLOCKCTRL1(t_params->port_num);
149 if (bus->params.next_bank) {
150 addr3 = SDW_DPN_SAMPLECTRL1_B1(t_params->port_num);
151 addr4 = SDW_DPN_OFFSETCTRL1_B1(t_params->port_num);
152 addr5 = SDW_DPN_BLOCKCTRL2_B1(t_params->port_num);
153 addr6 = SDW_DPN_LANECTRL_B1(t_params->port_num);
156 addr3 = SDW_DPN_SAMPLECTRL1_B0(t_params->port_num);
157 addr4 = SDW_DPN_OFFSETCTRL1_B0(t_params->port_num);
158 addr5 = SDW_DPN_BLOCKCTRL2_B0(t_params->port_num);
159 addr6 = SDW_DPN_LANECTRL_B0(t_params->port_num);
163 wbuf = FIELD_PREP(SDW_DPN_PORTCTRL_DATAMODE, p_params->data_mode);
164 wbuf |= FIELD_PREP(SDW_DPN_PORTCTRL_FLOWMODE, p_params->flow_mode);
166 ret = sdw_update_no_pm(s_rt->slave, addr1, 0xF, wbuf);
168 dev_err(&s_rt->slave->dev,
170 t_params->port_num);
174 if (!dpn_prop->read_only_wordlength) {
176 ret = sdw_write_no_pm(s_rt->slave, addr2, (p_params->bps - 1));
178 dev_err(&s_rt->slave->dev,
180 t_params->port_num);
186 wbuf = (t_params->sample_interval - 1) & SDW_DPN_SAMPLECTRL_LOW;
187 ret = sdw_write_no_pm(s_rt->slave, addr3, wbuf);
189 dev_err(&s_rt->slave->dev,
191 t_params->port_num);
196 ret = sdw_write_no_pm(s_rt->slave, addr4, t_params->offset1);
198 dev_err(&s_rt->slave->dev,
200 t_params->port_num);
205 if (t_params->blk_grp_ctrl_valid) {
206 ret = sdw_write_no_pm(s_rt->slave, addr5, t_params->blk_grp_ctrl);
208 dev_err(&s_rt->slave->dev,
210 t_params->port_num);
216 if (slave_prop->lane_control_support) {
217 ret = sdw_write_no_pm(s_rt->slave, addr6, t_params->lane_ctrl);
219 dev_err(&s_rt->slave->dev,
221 t_params->port_num);
226 if (dpn_prop->type != SDW_DPN_SIMPLE) {
227 ret = _sdw_program_slave_port_params(bus, s_rt->slave,
228 t_params, dpn_prop->type);
230 dev_err(&s_rt->slave->dev,
232 t_params->port_num);
249 ret = bus->port_ops->dpn_set_port_transport_params(bus,
250 &p_rt->transport_params,
251 bus->params.next_bank);
255 return bus->port_ops->dpn_set_port_params(bus,
256 &p_rt->port_params,
257 bus->params.next_bank);
261 * sdw_program_port_params() - Programs transport parameters of Master(s)
262 * and Slave(s)
269 struct sdw_bus *bus = m_rt->bus;
273 /* Program transport & port parameters for Slave(s) */
274 list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
275 list_for_each_entry(p_rt, &s_rt->port_list, port_node) {
283 list_for_each_entry(p_rt, &m_rt->port_list, port_node) {
293 * sdw_enable_disable_slave_ports: Enable/disable slave data port
296 * @s_rt: slave runtime
308 struct sdw_transport_params *t_params = &p_rt->transport_params;
309 u32 addr;
312 if (bus->params.next_bank)
313 addr = SDW_DPN_CHANNELEN_B1(p_rt->num);
315 addr = SDW_DPN_CHANNELEN_B0(p_rt->num);
322 ret = sdw_write_no_pm(s_rt->slave, addr, p_rt->ch_mask);
324 ret = sdw_write_no_pm(s_rt->slave, addr, 0x0);
327 dev_err(&s_rt->slave->dev,
328 "Slave chn_en reg write failed:%d port:%d\n",
329 ret, t_params->port_num);
338 struct sdw_transport_params *t_params = &p_rt->transport_params;
339 struct sdw_bus *bus = m_rt->bus;
343 enable_ch.port_num = p_rt->num;
344 enable_ch.ch_mask = p_rt->ch_mask;
348 if (bus->port_ops->dpn_port_enable_ch) {
349 ret = bus->port_ops->dpn_port_enable_ch(bus,
351 bus->params.next_bank);
353 dev_err(bus->dev,
355 ret, t_params->port_num);
359 dev_err(bus->dev,
362 return -EINVAL;
369 * sdw_enable_disable_ports() - Enable/disable port(s) for Master and
370 * Slave(s)
381 /* Enable/Disable Slave port(s) */
382 list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
383 list_for_each_entry(s_port, &s_rt->port_list, port_node) {
384 ret = sdw_enable_disable_slave_ports(m_rt->bus, s_rt,
392 list_for_each_entry(m_port, &m_rt->port_list, port_node) {
406 struct sdw_slave *slave = s_rt->slave;
408 mutex_lock(&slave->sdw_dev_lock);
410 if (slave->probed) {
411 struct device *dev = &slave->dev;
412 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver);
414 if (drv->ops && drv->ops->port_prep) {
415 ret = drv->ops->port_prep(slave, &prep_ch, cmd);
417 dev_err(dev, "Slave Port Prep cmd %d failed: %d\n",
422 mutex_unlock(&slave->sdw_dev_lock);
437 u32 addr;
439 prep_ch.num = p_rt->num;
440 prep_ch.ch_mask = p_rt->ch_mask;
442 dpn_prop = sdw_get_slave_dpn_prop(s_rt->slave,
443 s_rt->direction,
446 dev_err(bus->dev,
447 "Slave Port:%d properties not found\n", prep_ch.num);
448 return -EINVAL;
453 prep_ch.bank = bus->params.next_bank;
455 if (dpn_prop->imp_def_interrupts || !dpn_prop->simple_ch_prep_sm ||
456 bus->params.s_data_mode != SDW_PORT_DATA_MODE_NORMAL)
461 * For Port de-prepare, it is assumed that port
465 ret = sdw_configure_dpn_intr(s_rt->slave, p_rt->num, prep,
466 dpn_prop->imp_def_interrupts);
471 /* Inform slave about the impending port prepare */
474 /* Prepare Slave port implementing CP_SM */
475 if (!dpn_prop->simple_ch_prep_sm) {
476 addr = SDW_DPN_PREPARECTRL(p_rt->num);
479 ret = sdw_write_no_pm(s_rt->slave, addr, p_rt->ch_mask);
481 ret = sdw_write_no_pm(s_rt->slave, addr, 0x0);
484 dev_err(&s_rt->slave->dev,
485 "Slave prep_ctrl reg write failed\n");
490 port_ready = &s_rt->slave->port_ready[prep_ch.num];
492 msecs_to_jiffies(dpn_prop->ch_prep_timeout));
494 val = sdw_read_no_pm(s_rt->slave, SDW_DPN_PREPARESTATUS(p_rt->num));
495 if ((val < 0) || (val & p_rt->ch_mask)) {
496 ret = (val < 0) ? val : -ETIMEDOUT;
497 dev_err(&s_rt->slave->dev,
506 /* Disable interrupt after Port de-prepare */
508 ret = sdw_configure_dpn_intr(s_rt->slave, p_rt->num, prep,
509 dpn_prop->imp_def_interrupts);
518 struct sdw_transport_params *t_params = &p_rt->transport_params;
519 struct sdw_bus *bus = m_rt->bus;
520 const struct sdw_master_port_ops *ops = bus->port_ops;
524 prep_ch.num = p_rt->num;
525 prep_ch.ch_mask = p_rt->ch_mask;
526 prep_ch.prepare = prep; /* Prepare/De-prepare */
527 prep_ch.bank = bus->params.next_bank;
529 /* Pre-prepare/Pre-deprepare port(s) */
530 if (ops->dpn_port_prep) {
531 ret = ops->dpn_port_prep(bus, &prep_ch);
533 dev_err(bus->dev, "Port prepare failed for port:%d\n",
534 t_params->port_num);
543 * sdw_prep_deprep_ports() - Prepare/De-prepare port(s) for Master(s) and
544 * Slave(s)
547 * @prep: Prepare or De-prepare
555 /* Prepare/De-prepare Slave port(s) */
556 list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
557 list_for_each_entry(p_rt, &s_rt->port_list, port_node) {
558 ret = sdw_prep_deprep_slave_ports(m_rt->bus, s_rt,
565 /* Prepare/De-prepare Master port(s) */
566 list_for_each_entry(p_rt, &m_rt->port_list, port_node) {
576 * sdw_notify_config() - Notify bus configuration
580 * This function notifies the Master(s) and Slave(s) of the
586 struct sdw_bus *bus = m_rt->bus;
587 struct sdw_slave *slave;
590 if (bus->ops->set_bus_conf) {
591 ret = bus->ops->set_bus_conf(bus, &bus->params);
596 list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
597 slave = s_rt->slave;
599 mutex_lock(&slave->sdw_dev_lock);
601 if (slave->probed) {
602 struct device *dev = &slave->dev;
603 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver);
605 if (drv->ops && drv->ops->bus_config) {
606 ret = drv->ops->bus_config(slave, &bus->params);
608 dev_err(dev, "Notify Slave: %d failed\n",
609 slave->dev_num);
610 mutex_unlock(&slave->sdw_dev_lock);
616 mutex_unlock(&slave->sdw_dev_lock);
623 * sdw_program_params() - Program transport and port parameters for Master(s)
624 * and Slave(s)
632 struct sdw_slave *slave;
637 list_for_each_entry(slave, &bus->slaves, node) {
638 if (!slave->dev_num_sticky)
640 if (!is_clock_scaling_supported_by_slave(slave)) {
641 dev_dbg(&slave->dev, "The Peripheral doesn't comply with SDCA\n");
646 if (bus->params.next_bank)
652 list_for_each_entry(slave, &bus->slaves, node) {
656 if (!slave->dev_num_sticky)
658 scale_index = sdw_slave_get_scale_index(slave, &base);
662 ret = sdw_write_no_pm(slave, addr1, scale_index);
664 dev_err(&slave->dev, "SDW_SCP_BUSCLOCK_SCALE register write failed\n");
670 list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) {
676 * already-prepared stream otherwise.
679 m_rt->stream->state == SDW_STREAM_CONFIGURED)
684 dev_err(bus->dev,
691 dev_err(bus->dev,
697 if (m_rt->stream->state != SDW_STREAM_ENABLED)
702 dev_err(bus->dev, "Enable channel failed: %d\n", ret);
717 u16 addr;
721 return -ENOMEM;
725 ret = -ENOMEM;
730 col_index = sdw_find_col_index(bus->params.col);
731 row_index = sdw_find_row_index(bus->params.row);
734 if (bus->params.next_bank)
735 addr = SDW_SCP_FRAMECTRL_B1;
737 addr = SDW_SCP_FRAMECTRL_B0;
739 sdw_fill_msg(wr_msg, NULL, addr, 1, SDW_BROADCAST_DEV_NUM,
741 wr_msg->ssp_sync = true;
745 * and hardware-based sync is required
747 multi_link = bus->multi_link && (m_rt_count >= bus->hw_sync_min_links);
754 if (ret < 0 && ret != -ENODATA) {
755 dev_err(bus->dev, "Slave frame_ctrl reg write failed\n");
762 bus->defer_msg.msg = NULL;
763 bus->params.curr_bank = !bus->params.curr_bank;
764 bus->params.next_bank = !bus->params.next_bank;
773 bus->defer_msg.msg = NULL;
781 * @multi_link: whether this is a multi-link stream with hardware-based sync
793 time_left = wait_for_completion_timeout(&bus->defer_msg.complete,
794 bus->bank_switch_timeout);
797 dev_err(bus->dev, "Controller Timed out on bank switch\n");
798 return -ETIMEDOUT;
801 bus->params.curr_bank = !bus->params.curr_bank;
802 bus->params.next_bank = !bus->params.next_bank;
804 if (bus->defer_msg.msg) {
805 kfree(bus->defer_msg.msg->buf);
806 kfree(bus->defer_msg.msg);
807 bus->defer_msg.msg = NULL;
822 m_rt_count = stream->m_rt_count;
824 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
825 bus = m_rt->bus;
826 ops = bus->ops;
828 if (bus->multi_link && m_rt_count >= bus->hw_sync_min_links) {
830 mutex_lock(&bus->msg_lock);
833 /* Pre-bank switch */
834 if (ops->pre_bank_switch) {
835 ret = ops->pre_bank_switch(bus);
837 dev_err(bus->dev,
851 dev_err(bus->dev, "Bank switch failed: %d\n", ret);
862 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
863 bus = m_rt->bus;
864 ops = bus->ops;
866 /* Post-bank switch */
867 if (ops->post_bank_switch) {
868 ret = ops->post_bank_switch(bus);
870 dev_err(bus->dev,
876 dev_err(bus->dev,
878 ret = -EINVAL;
883 if (!bus->bank_switch_timeout)
884 bus->bank_switch_timeout = DEFAULT_BANK_SWITCH_TIMEOUT;
889 dev_err(bus->dev,
895 mutex_unlock(&bus->msg_lock);
901 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
902 bus = m_rt->bus;
903 if (bus->defer_msg.msg) {
904 kfree(bus->defer_msg.msg->buf);
905 kfree(bus->defer_msg.msg);
906 bus->defer_msg.msg = NULL;
913 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
914 bus = m_rt->bus;
915 if (mutex_is_locked(&bus->msg_lock))
916 mutex_unlock(&bus->msg_lock);
931 list_add_tail(&p_rt->port_node, port_list);
940 p_rt->ch_mask = port_config[port_index].ch_mask;
941 p_rt->num = port_config[port_index].num;
952 list_del(&p_rt->port_node);
958 return !list_empty(&s_rt->port_list);
961 static void sdw_slave_port_free(struct sdw_slave *slave,
968 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
969 list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
970 if (s_rt->slave != slave)
974 &s_rt->port_list, port_node) {
981 static int sdw_slave_port_alloc(struct sdw_slave *slave,
990 p_rt = sdw_port_alloc(&s_rt->port_list);
992 return -ENOMEM;
1002 return -EINVAL;
1008 static int sdw_slave_port_config(struct sdw_slave *slave,
1017 list_for_each_entry(p_rt, &s_rt->port_list, port_node) {
1020 * slave
1022 ret = sdw_slave_port_is_valid_range(&slave->dev, port_config[i].num);
1037 return !list_empty(&m_rt->port_list);
1044 list_for_each_entry_safe(p_rt, _p_rt, &m_rt->port_list, port_node) {
1057 p_rt = sdw_port_alloc(&m_rt->port_list);
1059 return -ENOMEM;
1073 list_for_each_entry(p_rt, &m_rt->port_list, port_node) {
1084 * sdw_slave_rt_alloc() - Allocate a Slave runtime handle.
1086 * @slave: Slave handle
1092 *sdw_slave_rt_alloc(struct sdw_slave *slave,
1101 INIT_LIST_HEAD(&s_rt->port_list);
1102 s_rt->slave = slave;
1104 list_add_tail(&s_rt->m_rt_node, &m_rt->slave_rt_list);
1110 * sdw_slave_rt_config() - Configure a Slave runtime handle.
1112 * @s_rt: Slave runtime handle
1120 s_rt->ch_count = stream_config->ch_count;
1121 s_rt->direction = stream_config->direction;
1126 static struct sdw_slave_runtime *sdw_slave_rt_find(struct sdw_slave *slave,
1132 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1133 /* Retrieve Slave runtime handle */
1135 &m_rt->slave_rt_list, m_rt_node) {
1136 if (s_rt->slave == slave)
1144 * sdw_slave_rt_free() - Free Slave(s) runtime handle
1146 * @slave: Slave handle.
1151 static void sdw_slave_rt_free(struct sdw_slave *slave,
1156 s_rt = sdw_slave_rt_find(slave, stream);
1158 list_del(&s_rt->m_rt_node);
1170 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1171 if (m_rt->bus == bus)
1179 * sdw_master_rt_alloc() - Allocates a Master runtime handle
1198 INIT_LIST_HEAD(&m_rt->port_list);
1199 INIT_LIST_HEAD(&m_rt->slave_rt_list);
1206 insert_after = &stream->master_list;
1207 list_for_each_entry_reverse(walk_m_rt, &stream->master_list, stream_node) {
1208 if (walk_m_rt->bus->id < bus->id) {
1209 insert_after = &walk_m_rt->stream_node;
1213 list_add(&m_rt->stream_node, insert_after);
1215 list_add_tail(&m_rt->bus_node, &bus->m_rt_list);
1217 m_rt->bus = bus;
1218 m_rt->stream = stream;
1220 bus->stream_refcount++;
1226 * sdw_master_rt_config() - Configure Master runtime handle
1237 m_rt->ch_count = stream_config->ch_count;
1238 m_rt->direction = stream_config->direction;
1244 * sdw_master_rt_free() - Free Master runtime handle
1250 * It frees the Master runtime handle and associated Slave(s) runtime
1252 * no effect as Slave(s) runtime handle would already be freed up.
1258 struct sdw_bus *bus = m_rt->bus;
1260 list_for_each_entry_safe(s_rt, _s_rt, &m_rt->slave_rt_list, m_rt_node) {
1261 sdw_slave_port_free(s_rt->slave, stream);
1262 sdw_slave_rt_free(s_rt->slave, stream);
1265 list_del(&m_rt->stream_node);
1266 list_del(&m_rt->bus_node);
1269 bus->stream_refcount--;
1273 * sdw_config_stream() - Configure the allocated stream
1278 * @is_slave: is API called from Slave or Master
1295 if (stream->params.rate &&
1296 stream->params.rate != stream_config->frame_rate) {
1297 dev_err(dev, "rate not matching, stream:%s\n", stream->name);
1298 return -EINVAL;
1301 if (stream->params.bps &&
1302 stream->params.bps != stream_config->bps) {
1303 dev_err(dev, "bps not matching, stream:%s\n", stream->name);
1304 return -EINVAL;
1307 stream->type = stream_config->type;
1308 stream->params.rate = stream_config->frame_rate;
1309 stream->params.bps = stream_config->bps;
1311 /* TODO: Update this check during Device-device support */
1313 stream->params.ch_count += stream_config->ch_count;
1319 * sdw_get_slave_dpn_prop() - Get Slave port capabilities
1321 * @slave: Slave handle
1325 struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave,
1334 num_ports = hweight32(slave->prop.source_ports);
1335 dpn_prop = slave->prop.src_dpn_prop;
1337 num_ports = hweight32(slave->prop.sink_ports);
1338 dpn_prop = slave->prop.sink_dpn_prop;
1365 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1366 bus = m_rt->bus;
1368 mutex_lock(&bus->bus_lock);
1387 list_for_each_entry_reverse(m_rt, &stream->master_list, stream_node) {
1388 bus = m_rt->bus;
1389 mutex_unlock(&bus->bus_lock);
1402 /* Prepare Master(s) and Slave(s) port(s) associated with stream */
1403 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1404 bus = m_rt->bus;
1405 prop = &bus->prop;
1406 memcpy(¶ms, &bus->params, sizeof(params));
1409 if ((prop->max_clk_freq % stream->params.rate) != 0) {
1410 dev_err(bus->dev, "Async mode not supported\n");
1411 return -EINVAL;
1416 /* TODO: Update this during Device-Device support */
1417 bus->params.bandwidth += m_rt->stream->params.rate *
1418 m_rt->ch_count * m_rt->stream->params.bps;
1421 if (bus->compute_params) {
1422 ret = bus->compute_params(bus, stream);
1424 dev_err(bus->dev, "Compute params failed: %d\n",
1434 dev_err(bus->dev, "Program params failed: %d\n", ret);
1445 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1446 bus = m_rt->bus;
1451 dev_err(bus->dev, "Prepare port(s) failed ret = %d\n",
1457 stream->state = SDW_STREAM_PREPARED;
1462 memcpy(&bus->params, ¶ms, sizeof(params));
1467 * sdw_prepare_stream() - Prepare SoundWire stream
1471 * Documentation/driver-api/soundwire/stream.rst explains this API in detail
1480 return -EINVAL;
1485 if (stream->state == SDW_STREAM_PREPARED) {
1490 if (stream->state != SDW_STREAM_CONFIGURED &&
1491 stream->state != SDW_STREAM_DEPREPARED &&
1492 stream->state != SDW_STREAM_DISABLED) {
1494 __func__, stream->name, stream->state);
1495 ret = -EINVAL;
1503 * still need to be re-applied
1505 if (stream->state == SDW_STREAM_DISABLED)
1522 /* Enable Master(s) and Slave(s) port(s) associated with stream */
1523 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1524 bus = m_rt->bus;
1529 dev_err(bus->dev, "%s: Program params failed: %d\n", __func__, ret);
1536 dev_err(bus->dev,
1548 stream->state = SDW_STREAM_ENABLED;
1553 * sdw_enable_stream() - Enable SoundWire stream
1557 * Documentation/driver-api/soundwire/stream.rst explains this API in detail
1565 return -EINVAL;
1570 if (stream->state == SDW_STREAM_ENABLED) {
1575 if (stream->state != SDW_STREAM_PREPARED &&
1576 stream->state != SDW_STREAM_DISABLED) {
1578 __func__, stream->name, stream->state);
1579 ret = -EINVAL;
1596 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1597 struct sdw_bus *bus = m_rt->bus;
1602 dev_err(bus->dev, "Disable port(s) failed: %d\n", ret);
1606 stream->state = SDW_STREAM_DISABLED;
1608 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1609 struct sdw_bus *bus = m_rt->bus;
1614 dev_err(bus->dev, "%s: Program params failed: %d\n", __func__, ret);
1626 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1627 struct sdw_bus *bus = m_rt->bus;
1632 dev_err(bus->dev, "Disable port(s) failed: %d\n", ret);
1641 * sdw_disable_stream() - Disable SoundWire stream
1645 * Documentation/driver-api/soundwire/stream.rst explains this API in detail
1653 return -EINVAL;
1658 if (stream->state == SDW_STREAM_DISABLED) {
1663 if (stream->state != SDW_STREAM_ENABLED) {
1665 __func__, stream->name, stream->state);
1666 ret = -EINVAL;
1685 int state = stream->state;
1692 stream->state = SDW_STREAM_DEPREPARED;
1694 list_for_each_entry(m_rt, &stream->master_list, stream_node) {
1695 bus = m_rt->bus;
1696 /* De-prepare port(s) */
1699 dev_err(bus->dev,
1700 "De-prepare port(s) failed: %d\n", ret);
1701 stream->state = state;
1707 list_for_each_entry(p_rt, &m_rt->port_list, port_node) {
1708 if (!p_rt->lane)
1711 bandwidth = m_rt->stream->params.rate * hweight32(p_rt->ch_mask) *
1712 m_rt->stream->params.bps;
1714 bus->lane_used_bandwidth[p_rt->lane] -= bandwidth;
1715 if (!bus->lane_used_bandwidth[p_rt->lane])
1716 p_rt->lane = 0;
1718 /* TODO: Update this during Device-Device support */
1719 bandwidth = m_rt->stream->params.rate * m_rt->ch_count * m_rt->stream->params.bps;
1720 bus->params.bandwidth -= bandwidth - multi_lane_bandwidth;
1723 if (bus->compute_params) {
1724 ret = bus->compute_params(bus, stream);
1726 dev_err(bus->dev, "Compute params failed: %d\n",
1728 stream->state = state;
1736 dev_err(bus->dev, "%s: Program params failed: %d\n", __func__, ret);
1737 stream->state = state;
1746 * sdw_deprepare_stream() - Deprepare SoundWire stream
1750 * Documentation/driver-api/soundwire/stream.rst explains this API in detail
1758 return -EINVAL;
1763 if (stream->state == SDW_STREAM_DEPREPARED) {
1768 if (stream->state != SDW_STREAM_PREPARED &&
1769 stream->state != SDW_STREAM_DISABLED) {
1771 __func__, stream->name, stream->state);
1772 ret = -EINVAL;
1794 ret = snd_soc_dai_set_stream(dai, sdw_stream, substream->stream);
1796 dev_err(rtd->dev, "failed to set stream pointer on dai %s\n", dai->name);
1805 * sdw_alloc_stream() - Allocate and return stream runtime
1821 stream->name = stream_name;
1822 INIT_LIST_HEAD(&stream->master_list);
1823 stream->state = SDW_STREAM_ALLOCATED;
1824 stream->m_rt_count = 0;
1831 * sdw_startup_stream() - Startup SoundWire stream
1835 * Documentation/driver-api/soundwire/stream.rst explains this API in detail
1845 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1846 name = kasprintf(GFP_KERNEL, "%s-Playback", substream->name);
1848 name = kasprintf(GFP_KERNEL, "%s-Capture", substream->name);
1851 return -ENOMEM;
1855 dev_err(rtd->dev, "alloc stream failed for substream DAI %s\n", substream->name);
1856 ret = -ENOMEM;
1875 * sdw_shutdown_stream() - Shutdown SoundWire stream
1879 * Documentation/driver-api/soundwire/stream.rst explains this API in detail
1891 sdw_stream = snd_soc_dai_get_stream(dai, substream->stream);
1894 dev_err(rtd->dev, "no stream found for DAI %s\n", dai->name);
1899 kfree(sdw_stream->name);
1908 * sdw_release_stream() - Free the assigned stream runtime
1921 * sdw_stream_add_master() - Allocate and add master runtime to a stream
1939 mutex_lock(&bus->bus_lock);
1944 * Check if bus->multi_link is set
1946 if (!bus->multi_link && stream->m_rt_count > 0) {
1947 dev_err(bus->dev,
1948 "Multilink not supported, link %d\n", bus->link_id);
1949 ret = -EINVAL;
1954 * check if Master is already allocated (e.g. as a result of Slave adding
1961 dev_err(bus->dev, "%s: Master runtime alloc failed for stream:%s\n",
1962 __func__, stream->name);
1963 ret = -ENOMEM;
1975 stream->m_rt_count++;
1982 ret = sdw_config_stream(bus->dev, stream, stream_config, false);
1997 mutex_unlock(&bus->bus_lock);
2003 * sdw_stream_remove_master() - Remove master from sdw_stream
2015 mutex_lock(&bus->bus_lock);
2018 &stream->master_list, stream_node) {
2019 if (m_rt->bus != bus)
2024 stream->m_rt_count--;
2027 if (list_empty(&stream->master_list))
2028 stream->state = SDW_STREAM_RELEASED;
2030 mutex_unlock(&bus->bus_lock);
2037 * sdw_stream_add_slave() - Allocate and add master/slave runtime to a stream
2039 * @slave: SDW Slave instance
2045 * It is expected that Slave is added before adding Master
2049 int sdw_stream_add_slave(struct sdw_slave *slave,
2062 mutex_lock(&slave->bus->bus_lock);
2068 m_rt = sdw_master_rt_find(slave->bus, stream);
2071 * If this API is invoked by Slave first then m_rt is not valid.
2072 * So, allocate m_rt and add Slave to it.
2074 m_rt = sdw_master_rt_alloc(slave->bus, stream);
2076 dev_err(&slave->dev, "%s: Master runtime alloc failed for stream:%s\n",
2077 __func__, stream->name);
2078 ret = -ENOMEM;
2085 s_rt = sdw_slave_rt_find(slave, stream);
2087 s_rt = sdw_slave_rt_alloc(slave, m_rt);
2089 dev_err(&slave->dev, "Slave runtime alloc failed for stream:%s\n",
2090 stream->name);
2091 ret = -ENOMEM;
2099 ret = sdw_slave_port_alloc(slave, s_rt, num_ports);
2112 ret = sdw_config_stream(&slave->dev, stream, stream_config, true);
2116 ret = sdw_slave_port_config(slave, s_rt, port_config);
2121 * Change stream state to CONFIGURED on first Slave add.
2122 * Bus is not aware of number of Slave(s) in a stream at this
2123 * point so cannot depend on all Slave(s) to be added in order to
2126 stream->state = SDW_STREAM_CONFIGURED;
2138 sdw_slave_rt_free(slave, stream);
2140 mutex_unlock(&slave->bus->bus_lock);
2146 * sdw_stream_remove_slave() - Remove slave from sdw_stream
2148 * @slave: SDW Slave instance
2153 int sdw_stream_remove_slave(struct sdw_slave *slave,
2156 mutex_lock(&slave->bus->bus_lock);
2158 sdw_slave_port_free(slave, stream);
2159 sdw_slave_rt_free(slave, stream);
2161 mutex_unlock(&slave->bus->bus_lock);