Lines Matching +full:slave +full:- +full:dev
1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2 // Copyright(c) 2015-17 Intel Corporation.
24 bus->id = rc; in sdw_get_id()
29 * sdw_bus_master_add() - add a bus Master instance
45 return -ENODEV; in sdw_bus_master_add()
57 bus->link_id); in sdw_bus_master_add()
61 if (!bus->ops) { in sdw_bus_master_add()
62 dev_err(bus->dev, "SoundWire Bus ops are not set\n"); in sdw_bus_master_add()
63 return -EINVAL; in sdw_bus_master_add()
66 if (!bus->compute_params) { in sdw_bus_master_add()
67 dev_err(bus->dev, in sdw_bus_master_add()
69 return -EINVAL; in sdw_bus_master_add()
75 * grabbed during configuration of a multi-bus stream. in sdw_bus_master_add()
77 lockdep_register_key(&bus->msg_lock_key); in sdw_bus_master_add()
78 __mutex_init(&bus->msg_lock, "msg_lock", &bus->msg_lock_key); in sdw_bus_master_add()
80 lockdep_register_key(&bus->bus_lock_key); in sdw_bus_master_add()
81 __mutex_init(&bus->bus_lock, "bus_lock", &bus->bus_lock_key); in sdw_bus_master_add()
83 INIT_LIST_HEAD(&bus->slaves); in sdw_bus_master_add()
84 INIT_LIST_HEAD(&bus->m_rt_list); in sdw_bus_master_add()
89 bus->multi_link = false; in sdw_bus_master_add()
90 if (bus->ops->read_prop) { in sdw_bus_master_add()
91 ret = bus->ops->read_prop(bus); in sdw_bus_master_add()
93 dev_err(bus->dev, in sdw_bus_master_add()
109 *bus->assigned = ~GENMASK(SDW_BROADCAST_DEV_NUM, SDW_ENUM_DEV_NUM); in sdw_bus_master_add()
112 set_bit(SDW_ENUM_DEV_NUM, bus->assigned); in sdw_bus_master_add()
113 set_bit(SDW_BROADCAST_DEV_NUM, bus->assigned); in sdw_bus_master_add()
116 set_bit(SDW_GROUP12_DEV_NUM, bus->assigned); in sdw_bus_master_add()
117 set_bit(SDW_GROUP13_DEV_NUM, bus->assigned); in sdw_bus_master_add()
118 set_bit(SDW_MASTER_DEV_NUM, bus->assigned); in sdw_bus_master_add()
124 * Create Slave devices based on Slaves described in in sdw_bus_master_add()
127 if (IS_ENABLED(CONFIG_ACPI) && ACPI_HANDLE(bus->dev)) in sdw_bus_master_add()
129 else if (IS_ENABLED(CONFIG_OF) && bus->dev->of_node) in sdw_bus_master_add()
132 ret = -ENOTSUPP; /* No ACPI/DT so error out */ in sdw_bus_master_add()
135 dev_err(bus->dev, "Finding slaves failed:%d\n", ret); in sdw_bus_master_add()
148 prop = &bus->prop; in sdw_bus_master_add()
149 bus->params.max_dr_freq = prop->max_clk_freq * SDW_DOUBLE_RATE_FACTOR; in sdw_bus_master_add()
150 bus->params.curr_dr_freq = bus->params.max_dr_freq; in sdw_bus_master_add()
151 bus->params.curr_bank = SDW_BANK0; in sdw_bus_master_add()
152 bus->params.next_bank = SDW_BANK1; in sdw_bus_master_add()
162 static int sdw_delete_slave(struct device *dev, void *data) in sdw_delete_slave() argument
164 struct sdw_slave *slave = dev_to_sdw_dev(dev); in sdw_delete_slave() local
165 struct sdw_bus *bus = slave->bus; in sdw_delete_slave()
167 pm_runtime_disable(dev); in sdw_delete_slave()
169 sdw_slave_debugfs_exit(slave); in sdw_delete_slave()
171 mutex_lock(&bus->bus_lock); in sdw_delete_slave()
173 if (slave->dev_num) { /* clear dev_num if assigned */ in sdw_delete_slave()
174 clear_bit(slave->dev_num, bus->assigned); in sdw_delete_slave()
175 if (bus->ops && bus->ops->put_device_num) in sdw_delete_slave()
176 bus->ops->put_device_num(bus, slave); in sdw_delete_slave()
178 list_del_init(&slave->node); in sdw_delete_slave()
179 mutex_unlock(&bus->bus_lock); in sdw_delete_slave()
181 device_unregister(dev); in sdw_delete_slave()
186 * sdw_bus_master_delete() - delete the bus master instance
193 device_for_each_child(bus->dev, NULL, sdw_delete_slave); in sdw_bus_master_delete()
200 lockdep_unregister_key(&bus->bus_lock_key); in sdw_bus_master_delete()
201 lockdep_unregister_key(&bus->msg_lock_key); in sdw_bus_master_delete()
202 ida_free(&sdw_bus_ida, bus->id); in sdw_bus_master_delete()
217 return -ENODATA; in find_response_code()
220 return -ETIMEDOUT; in find_response_code()
223 return -EIO; in find_response_code()
229 int retry = bus->prop.err_threshold; in do_transfer()
234 resp = bus->ops->xfer_msg(bus, msg); in do_transfer()
238 if (ret == 0 || ret == -ENODATA) in do_transfer()
248 struct sdw_defer *defer = &bus->defer_msg; in do_transfer_defer()
249 int retry = bus->prop.err_threshold; in do_transfer_defer()
253 defer->msg = msg; in do_transfer_defer()
254 defer->length = msg->len; in do_transfer_defer()
255 init_completion(&defer->complete); in do_transfer_defer()
258 resp = bus->ops->xfer_msg_defer(bus); in do_transfer_defer()
261 if (ret == 0 || ret == -ENODATA) in do_transfer_defer()
273 if (ret != 0 && ret != -ENODATA) in sdw_transfer_unlocked()
274 dev_err(bus->dev, "trf on Slave %d failed:%d %s addr %x count %d\n", in sdw_transfer_unlocked()
275 msg->dev_num, ret, in sdw_transfer_unlocked()
276 (msg->flags & SDW_MSG_FLAG_WRITE) ? "write" : "read", in sdw_transfer_unlocked()
277 msg->addr, msg->len); in sdw_transfer_unlocked()
283 * sdw_transfer() - Synchronous transfer message to a SDW Slave device
291 mutex_lock(&bus->msg_lock); in sdw_transfer()
295 mutex_unlock(&bus->msg_lock); in sdw_transfer()
301 * sdw_show_ping_status() - Direct report of PING status, to be used by Peripheral drivers
309 if (!bus->ops->read_ping_status) in sdw_show_ping_status()
313 * wait for peripheral to sync if desired. 10-15ms should be more than in sdw_show_ping_status()
319 mutex_lock(&bus->msg_lock); in sdw_show_ping_status()
321 status = bus->ops->read_ping_status(bus); in sdw_show_ping_status()
323 mutex_unlock(&bus->msg_lock); in sdw_show_ping_status()
326 dev_warn(bus->dev, "%s: no peripherals attached\n", __func__); in sdw_show_ping_status()
328 dev_dbg(bus->dev, "PING status: %#x\n", status); in sdw_show_ping_status()
333 * sdw_transfer_defer() - Asynchronously transfer message to a SDW Slave device
343 if (!bus->ops->xfer_msg_defer) in sdw_transfer_defer()
344 return -ENOTSUPP; in sdw_transfer_defer()
347 if (ret != 0 && ret != -ENODATA) in sdw_transfer_defer()
348 dev_err(bus->dev, "Defer trf on Slave %d failed:%d\n", in sdw_transfer_defer()
349 msg->dev_num, ret); in sdw_transfer_defer()
354 int sdw_fill_msg(struct sdw_msg *msg, struct sdw_slave *slave, in sdw_fill_msg() argument
358 msg->addr = addr; /* addr is 16 bit and truncated here */ in sdw_fill_msg()
359 msg->len = count; in sdw_fill_msg()
360 msg->dev_num = dev_num; in sdw_fill_msg()
361 msg->flags = flags; in sdw_fill_msg()
362 msg->buf = buf; in sdw_fill_msg()
369 return -EINVAL; in sdw_fill_msg()
373 if (slave && !slave->prop.paging_support) in sdw_fill_msg()
375 /* no need for else as that will fall-through to paging */ in sdw_fill_msg()
381 return -EINVAL; in sdw_fill_msg()
384 if (!slave) { in sdw_fill_msg()
385 pr_err("SDW: No slave for paging addr\n"); in sdw_fill_msg()
386 return -EINVAL; in sdw_fill_msg()
389 if (!slave->prop.paging_support) { in sdw_fill_msg()
390 dev_err(&slave->dev, in sdw_fill_msg()
392 return -EINVAL; in sdw_fill_msg()
395 msg->addr_page1 = FIELD_GET(SDW_SCP_ADDRPAGE1_MASK, addr); in sdw_fill_msg()
396 msg->addr_page2 = FIELD_GET(SDW_SCP_ADDRPAGE2_MASK, addr); in sdw_fill_msg()
397 msg->addr |= BIT(15); in sdw_fill_msg()
398 msg->page = true; in sdw_fill_msg()
407 static int sdw_ntransfer_no_pm(struct sdw_slave *slave, u32 addr, u8 flags, in sdw_ntransfer_no_pm() argument
416 size = min_t(size_t, count, (SDW_REGADDR + 1) - (addr & SDW_REGADDR)); in sdw_ntransfer_no_pm()
418 ret = sdw_fill_msg(&msg, slave, addr, size, slave->dev_num, flags, val); in sdw_ntransfer_no_pm()
422 ret = sdw_transfer(slave->bus, &msg); in sdw_ntransfer_no_pm()
423 if (ret < 0 && !slave->is_mockup_device) in sdw_ntransfer_no_pm()
428 count -= size; in sdw_ntransfer_no_pm()
435 * sdw_nread_no_pm() - Read "n" contiguous SDW Slave registers with no PM
436 * @slave: SDW Slave
444 int sdw_nread_no_pm(struct sdw_slave *slave, u32 addr, size_t count, u8 *val) in sdw_nread_no_pm() argument
446 return sdw_ntransfer_no_pm(slave, addr, SDW_MSG_FLAG_READ, count, val); in sdw_nread_no_pm()
451 * sdw_nwrite_no_pm() - Write "n" contiguous SDW Slave registers with no PM
452 * @slave: SDW Slave
460 int sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val) in sdw_nwrite_no_pm() argument
462 return sdw_ntransfer_no_pm(slave, addr, SDW_MSG_FLAG_WRITE, count, (u8 *)val); in sdw_nwrite_no_pm()
467 * sdw_write_no_pm() - Write a SDW Slave register with no PM
468 * @slave: SDW Slave
472 int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value) in sdw_write_no_pm() argument
474 return sdw_nwrite_no_pm(slave, addr, 1, &value); in sdw_write_no_pm()
545 * sdw_read_no_pm() - Read a SDW Slave register with no PM
546 * @slave: SDW Slave
549 int sdw_read_no_pm(struct sdw_slave *slave, u32 addr) in sdw_read_no_pm() argument
554 ret = sdw_nread_no_pm(slave, addr, 1, &buf); in sdw_read_no_pm()
562 int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) in sdw_update_no_pm() argument
566 tmp = sdw_read_no_pm(slave, addr); in sdw_update_no_pm()
571 return sdw_write_no_pm(slave, addr, tmp); in sdw_update_no_pm()
575 /* Read-Modify-Write Slave register */
576 int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val) in sdw_update() argument
580 tmp = sdw_read(slave, addr); in sdw_update()
585 return sdw_write(slave, addr, tmp); in sdw_update()
590 * sdw_nread() - Read "n" contiguous SDW Slave registers
591 * @slave: SDW Slave
596 * This version of the function will take a PM reference to the slave
601 int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val) in sdw_nread() argument
605 ret = pm_runtime_get_sync(&slave->dev); in sdw_nread()
606 if (ret < 0 && ret != -EACCES) { in sdw_nread()
607 pm_runtime_put_noidle(&slave->dev); in sdw_nread()
611 ret = sdw_nread_no_pm(slave, addr, count, val); in sdw_nread()
613 pm_runtime_mark_last_busy(&slave->dev); in sdw_nread()
614 pm_runtime_put(&slave->dev); in sdw_nread()
621 * sdw_nwrite() - Write "n" contiguous SDW Slave registers
622 * @slave: SDW Slave
627 * This version of the function will take a PM reference to the slave
632 int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val) in sdw_nwrite() argument
636 ret = pm_runtime_get_sync(&slave->dev); in sdw_nwrite()
637 if (ret < 0 && ret != -EACCES) { in sdw_nwrite()
638 pm_runtime_put_noidle(&slave->dev); in sdw_nwrite()
642 ret = sdw_nwrite_no_pm(slave, addr, count, val); in sdw_nwrite()
644 pm_runtime_mark_last_busy(&slave->dev); in sdw_nwrite()
645 pm_runtime_put(&slave->dev); in sdw_nwrite()
652 * sdw_read() - Read a SDW Slave register
653 * @slave: SDW Slave
656 * This version of the function will take a PM reference to the slave
659 int sdw_read(struct sdw_slave *slave, u32 addr) in sdw_read() argument
664 ret = sdw_nread(slave, addr, 1, &buf); in sdw_read()
673 * sdw_write() - Write a SDW Slave register
674 * @slave: SDW Slave
678 * This version of the function will take a PM reference to the slave
681 int sdw_write(struct sdw_slave *slave, u32 addr, u8 value) in sdw_write() argument
683 return sdw_nwrite(slave, addr, 1, &value); in sdw_write()
694 struct sdw_slave *slave; in sdw_get_slave() local
696 list_for_each_entry(slave, &bus->slaves, node) { in sdw_get_slave()
697 if (slave->dev_num == i) in sdw_get_slave()
698 return slave; in sdw_get_slave()
704 int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id) in sdw_compare_devid() argument
706 if (slave->id.mfg_id != id.mfg_id || in sdw_compare_devid()
707 slave->id.part_id != id.part_id || in sdw_compare_devid()
708 slave->id.class_id != id.class_id || in sdw_compare_devid()
709 (slave->id.unique_id != SDW_IGNORED_UNIQUE_ID && in sdw_compare_devid()
710 slave->id.unique_id != id.unique_id)) in sdw_compare_devid()
711 return -ENODEV; in sdw_compare_devid()
718 static int sdw_get_device_num(struct sdw_slave *slave) in sdw_get_device_num() argument
720 struct sdw_bus *bus = slave->bus; in sdw_get_device_num()
723 if (bus->ops && bus->ops->get_device_num) { in sdw_get_device_num()
724 bit = bus->ops->get_device_num(bus, slave); in sdw_get_device_num()
728 bit = find_first_zero_bit(bus->assigned, SDW_MAX_DEVICES); in sdw_get_device_num()
730 bit = -ENODEV; in sdw_get_device_num()
736 * Do not update dev_num in Slave data structure here, in sdw_get_device_num()
739 set_bit(bit, bus->assigned); in sdw_get_device_num()
745 static int sdw_assign_device_num(struct sdw_slave *slave) in sdw_assign_device_num() argument
747 struct sdw_bus *bus = slave->bus; in sdw_assign_device_num()
752 if (!slave->dev_num) { in sdw_assign_device_num()
753 if (!slave->dev_num_sticky) { in sdw_assign_device_num()
754 mutex_lock(&slave->bus->bus_lock); in sdw_assign_device_num()
755 dev_num = sdw_get_device_num(slave); in sdw_assign_device_num()
756 mutex_unlock(&slave->bus->bus_lock); in sdw_assign_device_num()
758 dev_err(bus->dev, "Get dev_num failed: %d\n", in sdw_assign_device_num()
762 slave->dev_num = dev_num; in sdw_assign_device_num()
763 slave->dev_num_sticky = dev_num; in sdw_assign_device_num()
766 slave->dev_num = slave->dev_num_sticky; in sdw_assign_device_num()
771 dev_dbg(bus->dev, in sdw_assign_device_num()
772 "Slave already registered, reusing dev_num:%d\n", in sdw_assign_device_num()
773 slave->dev_num); in sdw_assign_device_num()
775 /* Clear the slave->dev_num to transfer message on device 0 */ in sdw_assign_device_num()
776 dev_num = slave->dev_num; in sdw_assign_device_num()
777 slave->dev_num = 0; in sdw_assign_device_num()
779 ret = sdw_write_no_pm(slave, SDW_SCP_DEVNUMBER, dev_num); in sdw_assign_device_num()
781 dev_err(bus->dev, "Program device_num %d failed: %d\n", in sdw_assign_device_num()
787 slave->dev_num = slave->dev_num_sticky; in sdw_assign_device_num()
789 if (bus->ops && bus->ops->new_peripheral_assigned) in sdw_assign_device_num()
790 bus->ops->new_peripheral_assigned(bus, slave, dev_num); in sdw_assign_device_num()
798 dev_dbg(bus->dev, "SDW Slave Addr: %llx\n", addr); in sdw_extract_slave_id()
800 id->sdw_version = SDW_VERSION(addr); in sdw_extract_slave_id()
801 id->unique_id = SDW_UNIQUE_ID(addr); in sdw_extract_slave_id()
802 id->mfg_id = SDW_MFG_ID(addr); in sdw_extract_slave_id()
803 id->part_id = SDW_PART_ID(addr); in sdw_extract_slave_id()
804 id->class_id = SDW_CLASS_ID(addr); in sdw_extract_slave_id()
806 dev_dbg(bus->dev, in sdw_extract_slave_id()
807 "SDW Slave class_id 0x%02x, mfg_id 0x%04x, part_id 0x%04x, unique_id 0x%x, version 0x%x\n", in sdw_extract_slave_id()
808 id->class_id, id->mfg_id, id->part_id, id->unique_id, id->sdw_version); in sdw_extract_slave_id()
815 struct sdw_slave *slave, *_s; in sdw_program_device_num() local
824 /* No Slave, so use raw xfer api */ in sdw_program_device_num()
832 if (ret == -ENODATA) { /* end of device id reads */ in sdw_program_device_num()
833 dev_dbg(bus->dev, "No more devices to enumerate\n"); in sdw_program_device_num()
838 dev_err(bus->dev, "DEVID read fail:%d\n", ret); in sdw_program_device_num()
854 list_for_each_entry_safe(slave, _s, &bus->slaves, node) { in sdw_program_device_num()
855 if (sdw_compare_devid(slave, id) == 0) { in sdw_program_device_num()
859 * To prevent skipping state-machine stages don't in sdw_program_device_num()
865 if (slave->status != SDW_SLAVE_UNATTACHED) in sdw_program_device_num()
869 * Assign a new dev_num to this Slave and in sdw_program_device_num()
874 ret = sdw_assign_device_num(slave); in sdw_program_device_num()
876 dev_err(bus->dev, in sdw_program_device_num()
892 * add Slave device even if there is no platform in sdw_program_device_num()
899 dev_err(bus->dev, "Slave Entry not found\n"); in sdw_program_device_num()
915 static void sdw_modify_slave_status(struct sdw_slave *slave, in sdw_modify_slave_status() argument
918 struct sdw_bus *bus = slave->bus; in sdw_modify_slave_status()
920 mutex_lock(&bus->bus_lock); in sdw_modify_slave_status()
922 dev_vdbg(bus->dev, in sdw_modify_slave_status()
923 "changing status slave %d status %d new status %d\n", in sdw_modify_slave_status()
924 slave->dev_num, slave->status, status); in sdw_modify_slave_status()
927 dev_dbg(&slave->dev, in sdw_modify_slave_status()
928 "initializing enumeration and init completion for Slave %d\n", in sdw_modify_slave_status()
929 slave->dev_num); in sdw_modify_slave_status()
931 reinit_completion(&slave->enumeration_complete); in sdw_modify_slave_status()
932 reinit_completion(&slave->initialization_complete); in sdw_modify_slave_status()
935 (slave->status == SDW_SLAVE_UNATTACHED)) { in sdw_modify_slave_status()
936 dev_dbg(&slave->dev, in sdw_modify_slave_status()
937 "signaling enumeration completion for Slave %d\n", in sdw_modify_slave_status()
938 slave->dev_num); in sdw_modify_slave_status()
940 complete_all(&slave->enumeration_complete); in sdw_modify_slave_status()
942 slave->status = status; in sdw_modify_slave_status()
943 mutex_unlock(&bus->bus_lock); in sdw_modify_slave_status()
946 static int sdw_slave_clk_stop_callback(struct sdw_slave *slave, in sdw_slave_clk_stop_callback() argument
952 mutex_lock(&slave->sdw_dev_lock); in sdw_slave_clk_stop_callback()
954 if (slave->probed) { in sdw_slave_clk_stop_callback()
955 struct device *dev = &slave->dev; in sdw_slave_clk_stop_callback() local
956 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver); in sdw_slave_clk_stop_callback()
958 if (drv->ops && drv->ops->clk_stop) in sdw_slave_clk_stop_callback()
959 ret = drv->ops->clk_stop(slave, mode, type); in sdw_slave_clk_stop_callback()
962 mutex_unlock(&slave->sdw_dev_lock); in sdw_slave_clk_stop_callback()
967 static int sdw_slave_clk_stop_prepare(struct sdw_slave *slave, in sdw_slave_clk_stop_prepare() argument
975 wake_en = slave->prop.wake_capable; in sdw_slave_clk_stop_prepare()
986 ret = sdw_read_no_pm(slave, SDW_SCP_SYSTEMCTRL); in sdw_slave_clk_stop_prepare()
988 if (ret != -ENODATA) in sdw_slave_clk_stop_prepare()
989 dev_err(&slave->dev, "SDW_SCP_SYSTEMCTRL read failed:%d\n", ret); in sdw_slave_clk_stop_prepare()
996 ret = sdw_write_no_pm(slave, SDW_SCP_SYSTEMCTRL, val); in sdw_slave_clk_stop_prepare()
998 if (ret < 0 && ret != -ENODATA) in sdw_slave_clk_stop_prepare()
999 dev_err(&slave->dev, "SDW_SCP_SYSTEMCTRL write failed:%d\n", ret); in sdw_slave_clk_stop_prepare()
1006 int retry = bus->clk_stop_timeout; in sdw_bus_wait_for_clk_prep_deprep()
1012 if (val != -ENODATA) in sdw_bus_wait_for_clk_prep_deprep()
1013 dev_err(bus->dev, "SDW_SCP_STAT bread failed:%d\n", val); in sdw_bus_wait_for_clk_prep_deprep()
1018 dev_dbg(bus->dev, "clock stop prep/de-prep done slave:%d\n", in sdw_bus_wait_for_clk_prep_deprep()
1024 retry--; in sdw_bus_wait_for_clk_prep_deprep()
1027 dev_err(bus->dev, "clock stop prep/de-prep failed slave:%d\n", in sdw_bus_wait_for_clk_prep_deprep()
1030 return -ETIMEDOUT; in sdw_bus_wait_for_clk_prep_deprep()
1034 * sdw_bus_prep_clk_stop: prepare Slave(s) for clock stop
1038 * Query Slave for clock stop mode and prepare for that mode.
1043 struct sdw_slave *slave; in sdw_bus_prep_clk_stop() local
1049 * each Slave and then wait for all Slave(s) to be in sdw_bus_prep_clk_stop()
1051 * If one of the Slave devices has lost sync and in sdw_bus_prep_clk_stop()
1052 * replies with Command Ignored/-ENODATA, we continue in sdw_bus_prep_clk_stop()
1055 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_prep_clk_stop()
1056 if (!slave->dev_num) in sdw_bus_prep_clk_stop()
1059 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_prep_clk_stop()
1060 slave->status != SDW_SLAVE_ALERT) in sdw_bus_prep_clk_stop()
1063 /* Identify if Slave(s) are available on Bus */ in sdw_bus_prep_clk_stop()
1066 ret = sdw_slave_clk_stop_callback(slave, in sdw_bus_prep_clk_stop()
1069 if (ret < 0 && ret != -ENODATA) { in sdw_bus_prep_clk_stop()
1070 dev_err(&slave->dev, "clock stop pre-prepare cb failed:%d\n", ret); in sdw_bus_prep_clk_stop()
1074 /* Only prepare a Slave device if needed */ in sdw_bus_prep_clk_stop()
1075 if (!slave->prop.simple_clk_stop_capable) { in sdw_bus_prep_clk_stop()
1078 ret = sdw_slave_clk_stop_prepare(slave, in sdw_bus_prep_clk_stop()
1081 if (ret < 0 && ret != -ENODATA) { in sdw_bus_prep_clk_stop()
1082 dev_err(&slave->dev, "clock stop prepare failed:%d\n", ret); in sdw_bus_prep_clk_stop()
1088 /* Skip remaining clock stop preparation if no Slave is attached */ in sdw_bus_prep_clk_stop()
1100 * if there are no Slave devices present and the reply is in sdw_bus_prep_clk_stop()
1101 * Command_Ignored/-ENODATA, we don't need to continue with the in sdw_bus_prep_clk_stop()
1110 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_prep_clk_stop()
1111 if (!slave->dev_num) in sdw_bus_prep_clk_stop()
1114 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_prep_clk_stop()
1115 slave->status != SDW_SLAVE_ALERT) in sdw_bus_prep_clk_stop()
1118 ret = sdw_slave_clk_stop_callback(slave, in sdw_bus_prep_clk_stop()
1122 if (ret < 0 && ret != -ENODATA) { in sdw_bus_prep_clk_stop()
1123 dev_err(&slave->dev, "clock stop post-prepare cb failed:%d\n", ret); in sdw_bus_prep_clk_stop()
1151 if (ret != -ENODATA) in sdw_bus_clk_stop()
1152 dev_err(bus->dev, "ClockStopNow Broadcast msg failed %d\n", ret); in sdw_bus_clk_stop()
1165 * This De-prepares the Slaves by exiting Clock Stop Mode 0. For the Slaves
1166 * exiting Clock Stop Mode 1, they will be de-prepared after they enumerate
1172 struct sdw_slave *slave; in sdw_bus_exit_clk_stop() local
1177 * In order to save on transition time, de-prepare in sdw_bus_exit_clk_stop()
1178 * each Slave and then wait for all Slave(s) to be in sdw_bus_exit_clk_stop()
1179 * de-prepared after clock resume. in sdw_bus_exit_clk_stop()
1181 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_exit_clk_stop()
1182 if (!slave->dev_num) in sdw_bus_exit_clk_stop()
1185 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_exit_clk_stop()
1186 slave->status != SDW_SLAVE_ALERT) in sdw_bus_exit_clk_stop()
1189 /* Identify if Slave(s) are available on Bus */ in sdw_bus_exit_clk_stop()
1192 ret = sdw_slave_clk_stop_callback(slave, SDW_CLK_STOP_MODE0, in sdw_bus_exit_clk_stop()
1195 dev_warn(&slave->dev, "clock stop pre-deprepare cb failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1197 /* Only de-prepare a Slave device if needed */ in sdw_bus_exit_clk_stop()
1198 if (!slave->prop.simple_clk_stop_capable) { in sdw_bus_exit_clk_stop()
1201 ret = sdw_slave_clk_stop_prepare(slave, SDW_CLK_STOP_MODE0, in sdw_bus_exit_clk_stop()
1205 dev_warn(&slave->dev, "clock stop deprepare failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1209 /* Skip remaining clock stop de-preparation if no Slave is attached */ in sdw_bus_exit_clk_stop()
1220 dev_warn(bus->dev, "clock stop deprepare wait failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1223 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_exit_clk_stop()
1224 if (!slave->dev_num) in sdw_bus_exit_clk_stop()
1227 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_exit_clk_stop()
1228 slave->status != SDW_SLAVE_ALERT) in sdw_bus_exit_clk_stop()
1231 ret = sdw_slave_clk_stop_callback(slave, SDW_CLK_STOP_MODE0, in sdw_bus_exit_clk_stop()
1234 dev_warn(&slave->dev, "clock stop post-deprepare cb failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1241 int sdw_configure_dpn_intr(struct sdw_slave *slave, in sdw_configure_dpn_intr() argument
1248 if (slave->bus->params.s_data_mode != SDW_PORT_DATA_MODE_NORMAL) { in sdw_configure_dpn_intr()
1249 dev_dbg(&slave->dev, "TEST FAIL interrupt %s\n", in sdw_configure_dpn_intr()
1265 ret = sdw_update_no_pm(slave, addr, (mask | SDW_DPN_INT_PORT_READY), val); in sdw_configure_dpn_intr()
1267 dev_err(&slave->dev, in sdw_configure_dpn_intr()
1273 static int sdw_slave_set_frequency(struct sdw_slave *slave) in sdw_slave_set_frequency() argument
1275 u32 mclk_freq = slave->bus->prop.mclk_freq; in sdw_slave_set_frequency()
1276 u32 curr_freq = slave->bus->params.curr_dr_freq >> 1; in sdw_slave_set_frequency()
1284 * devices. They may also be used for 1.2+/non-SDCA devices. in sdw_slave_set_frequency()
1288 if (!slave->id.class_id && !slave->prop.clock_reg_supported) in sdw_slave_set_frequency()
1292 dev_err(&slave->dev, in sdw_slave_set_frequency()
1294 return -EINVAL; in sdw_slave_set_frequency()
1322 dev_err(&slave->dev, in sdw_slave_set_frequency()
1325 return -EINVAL; in sdw_slave_set_frequency()
1329 dev_err(&slave->dev, in sdw_slave_set_frequency()
1332 return -EINVAL; in sdw_slave_set_frequency()
1338 * map scale to Table 90 of SoundWire 1.2 spec - and check in sdw_slave_set_frequency()
1344 dev_err(&slave->dev, in sdw_slave_set_frequency()
1347 return -EINVAL; in sdw_slave_set_frequency()
1351 ret = sdw_write_no_pm(slave, SDW_SCP_BUS_CLOCK_BASE, base); in sdw_slave_set_frequency()
1353 dev_err(&slave->dev, in sdw_slave_set_frequency()
1359 ret = sdw_write_no_pm(slave, SDW_SCP_BUSCLOCK_SCALE_B0, scale_index); in sdw_slave_set_frequency()
1361 dev_err(&slave->dev, in sdw_slave_set_frequency()
1365 ret = sdw_write_no_pm(slave, SDW_SCP_BUSCLOCK_SCALE_B1, scale_index); in sdw_slave_set_frequency()
1367 dev_err(&slave->dev, in sdw_slave_set_frequency()
1370 dev_dbg(&slave->dev, in sdw_slave_set_frequency()
1377 static int sdw_initialize_slave(struct sdw_slave *slave) in sdw_initialize_slave() argument
1379 struct sdw_slave_prop *prop = &slave->prop; in sdw_initialize_slave()
1384 ret = sdw_slave_set_frequency(slave); in sdw_initialize_slave()
1388 if (slave->bus->prop.quirks & SDW_MASTER_QUIRKS_CLEAR_INITIAL_CLASH) { in sdw_initialize_slave()
1390 status = sdw_read_no_pm(slave, SDW_SCP_INT1); in sdw_initialize_slave()
1392 dev_err(&slave->dev, in sdw_initialize_slave()
1397 dev_warn(&slave->dev, "Bus clash detected before INT mask is enabled\n"); in sdw_initialize_slave()
1398 ret = sdw_write_no_pm(slave, SDW_SCP_INT1, SDW_SCP_INT1_BUS_CLASH); in sdw_initialize_slave()
1400 dev_err(&slave->dev, in sdw_initialize_slave()
1406 if ((slave->bus->prop.quirks & SDW_MASTER_QUIRKS_CLEAR_INITIAL_PARITY) && in sdw_initialize_slave()
1407 !(slave->prop.quirks & SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY)) { in sdw_initialize_slave()
1409 status = sdw_read_no_pm(slave, SDW_SCP_INT1); in sdw_initialize_slave()
1411 dev_err(&slave->dev, in sdw_initialize_slave()
1416 dev_warn(&slave->dev, "PARITY error detected before INT mask is enabled\n"); in sdw_initialize_slave()
1417 ret = sdw_write_no_pm(slave, SDW_SCP_INT1, SDW_SCP_INT1_PARITY); in sdw_initialize_slave()
1419 dev_err(&slave->dev, in sdw_initialize_slave()
1428 * implementation-defined interrupt mask. The Parity detection in sdw_initialize_slave()
1430 * device-dependent, it might e.g. only be enabled in in sdw_initialize_slave()
1431 * steady-state after a couple of frames. in sdw_initialize_slave()
1433 val = slave->prop.scp_int1_mask; in sdw_initialize_slave()
1436 ret = sdw_update_no_pm(slave, SDW_SCP_INTMASK1, val, val); in sdw_initialize_slave()
1438 dev_err(&slave->dev, in sdw_initialize_slave()
1444 if (!slave->prop.dp0_prop) in sdw_initialize_slave()
1448 val = prop->dp0_prop->imp_def_interrupts; in sdw_initialize_slave()
1451 ret = sdw_update_no_pm(slave, SDW_DP0_INTMASK, val, val); in sdw_initialize_slave()
1453 dev_err(&slave->dev, in sdw_initialize_slave()
1458 static int sdw_handle_dp0_interrupt(struct sdw_slave *slave, u8 *slave_status) in sdw_handle_dp0_interrupt() argument
1463 status = sdw_read_no_pm(slave, SDW_DP0_INT); in sdw_handle_dp0_interrupt()
1465 dev_err(&slave->dev, in sdw_handle_dp0_interrupt()
1474 dev_err(&slave->dev, "Test fail for port 0\n"); in sdw_handle_dp0_interrupt()
1484 complete(&slave->port_ready[0]); in sdw_handle_dp0_interrupt()
1489 dev_err(&slave->dev, "BRA failed\n"); in sdw_handle_dp0_interrupt()
1502 ret = sdw_write_no_pm(slave, SDW_DP0_INT, clear); in sdw_handle_dp0_interrupt()
1504 dev_err(&slave->dev, in sdw_handle_dp0_interrupt()
1510 status2 = sdw_read_no_pm(slave, SDW_DP0_INT); in sdw_handle_dp0_interrupt()
1512 dev_err(&slave->dev, in sdw_handle_dp0_interrupt()
1525 dev_warn(&slave->dev, "Reached MAX_RETRY on DP0 read\n"); in sdw_handle_dp0_interrupt()
1530 static int sdw_handle_port_interrupt(struct sdw_slave *slave, in sdw_handle_port_interrupt() argument
1538 return sdw_handle_dp0_interrupt(slave, slave_status); in sdw_handle_port_interrupt()
1541 status = sdw_read_no_pm(slave, addr); in sdw_handle_port_interrupt()
1543 dev_err(&slave->dev, in sdw_handle_port_interrupt()
1553 dev_err(&slave->dev, "Test fail for port:%d\n", port); in sdw_handle_port_interrupt()
1562 complete(&slave->port_ready[port]); in sdw_handle_port_interrupt()
1575 ret = sdw_write_no_pm(slave, addr, clear); in sdw_handle_port_interrupt()
1577 dev_err(&slave->dev, in sdw_handle_port_interrupt()
1583 status2 = sdw_read_no_pm(slave, addr); in sdw_handle_port_interrupt()
1585 dev_err(&slave->dev, in sdw_handle_port_interrupt()
1598 dev_warn(&slave->dev, "Reached MAX_RETRY on port read"); in sdw_handle_port_interrupt()
1603 static int sdw_handle_slave_alerts(struct sdw_slave *slave) in sdw_handle_slave_alerts() argument
1615 sdw_modify_slave_status(slave, SDW_SLAVE_ALERT); in sdw_handle_slave_alerts()
1617 ret = pm_runtime_get_sync(&slave->dev); in sdw_handle_slave_alerts()
1618 if (ret < 0 && ret != -EACCES) { in sdw_handle_slave_alerts()
1619 dev_err(&slave->dev, "Failed to resume device: %d\n", ret); in sdw_handle_slave_alerts()
1620 pm_runtime_put_noidle(&slave->dev); in sdw_handle_slave_alerts()
1625 ret = sdw_read_no_pm(slave, SDW_SCP_INT1); in sdw_handle_slave_alerts()
1627 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1633 ret = sdw_nread_no_pm(slave, SDW_SCP_INTSTAT2, 2, buf2); in sdw_handle_slave_alerts()
1635 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1640 if (slave->id.class_id) { in sdw_handle_slave_alerts()
1641 ret = sdw_read_no_pm(slave, SDW_DP0_INT); in sdw_handle_slave_alerts()
1643 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1654 * Check parity, bus clash and Slave (impl defined) in sdw_handle_slave_alerts()
1658 parity_check = slave->prop.scp_int1_mask & SDW_SCP_INT1_PARITY; in sdw_handle_slave_alerts()
1659 parity_quirk = !slave->first_interrupt_done && in sdw_handle_slave_alerts()
1660 (slave->prop.quirks & SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY); in sdw_handle_slave_alerts()
1663 dev_err(&slave->dev, "Parity error detected\n"); in sdw_handle_slave_alerts()
1668 if (slave->prop.scp_int1_mask & SDW_SCP_INT1_BUS_CLASH) in sdw_handle_slave_alerts()
1669 dev_err(&slave->dev, "Bus clash detected\n"); in sdw_handle_slave_alerts()
1681 if (slave->prop.scp_int1_mask & SDW_SCP_INT1_IMPL_DEF) { in sdw_handle_slave_alerts()
1682 dev_dbg(&slave->dev, "Slave impl defined interrupt\n"); in sdw_handle_slave_alerts()
1692 /* Check port 0 - 3 interrupts */ in sdw_handle_slave_alerts()
1698 sdw_handle_port_interrupt(slave, bit, in sdw_handle_slave_alerts()
1708 sdw_handle_port_interrupt(slave, in sdw_handle_slave_alerts()
1720 sdw_handle_port_interrupt(slave, in sdw_handle_slave_alerts()
1726 /* Update the Slave driver */ in sdw_handle_slave_alerts()
1728 mutex_lock(&slave->sdw_dev_lock); in sdw_handle_slave_alerts()
1730 if (slave->probed) { in sdw_handle_slave_alerts()
1731 struct device *dev = &slave->dev; in sdw_handle_slave_alerts() local
1732 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver); in sdw_handle_slave_alerts()
1734 if (slave->prop.use_domain_irq && slave->irq) in sdw_handle_slave_alerts()
1735 handle_nested_irq(slave->irq); in sdw_handle_slave_alerts()
1737 if (drv->ops && drv->ops->interrupt_callback) { in sdw_handle_slave_alerts()
1743 drv->ops->interrupt_callback(slave, &slave_intr); in sdw_handle_slave_alerts()
1747 mutex_unlock(&slave->sdw_dev_lock); in sdw_handle_slave_alerts()
1751 ret = sdw_write_no_pm(slave, SDW_SCP_INT1, clear); in sdw_handle_slave_alerts()
1753 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1759 slave->first_interrupt_done = true; in sdw_handle_slave_alerts()
1765 ret = sdw_read_no_pm(slave, SDW_SCP_INT1); in sdw_handle_slave_alerts()
1767 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1773 ret = sdw_nread_no_pm(slave, SDW_SCP_INTSTAT2, 2, buf2); in sdw_handle_slave_alerts()
1775 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1780 if (slave->id.class_id) { in sdw_handle_slave_alerts()
1781 ret = sdw_read_no_pm(slave, SDW_DP0_INT); in sdw_handle_slave_alerts()
1783 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1796 * Exit loop if Slave is continuously in ALERT state even in sdw_handle_slave_alerts()
1805 dev_warn(&slave->dev, "Reached MAX_RETRY on alert read\n"); in sdw_handle_slave_alerts()
1808 pm_runtime_mark_last_busy(&slave->dev); in sdw_handle_slave_alerts()
1809 pm_runtime_put_autosuspend(&slave->dev); in sdw_handle_slave_alerts()
1814 static int sdw_update_slave_status(struct sdw_slave *slave, in sdw_update_slave_status() argument
1819 mutex_lock(&slave->sdw_dev_lock); in sdw_update_slave_status()
1821 if (slave->probed) { in sdw_update_slave_status()
1822 struct device *dev = &slave->dev; in sdw_update_slave_status() local
1823 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver); in sdw_update_slave_status()
1825 if (drv->ops && drv->ops->update_status) in sdw_update_slave_status()
1826 ret = drv->ops->update_status(slave, status); in sdw_update_slave_status()
1829 mutex_unlock(&slave->sdw_dev_lock); in sdw_update_slave_status()
1835 * sdw_handle_slave_status() - Handle Slave status
1837 * @status: Status for all Slave(s)
1843 struct sdw_slave *slave; in sdw_handle_slave_status() local
1849 mutex_lock(&bus->bus_lock); in sdw_handle_slave_status()
1850 if (test_bit(i, bus->assigned) == false) { in sdw_handle_slave_status()
1851 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1854 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1856 slave = sdw_get_slave(bus, i); in sdw_handle_slave_status()
1857 if (!slave) in sdw_handle_slave_status()
1861 slave->status != SDW_SLAVE_UNATTACHED) { in sdw_handle_slave_status()
1862 dev_warn(&slave->dev, "Slave %d state check1: UNATTACHED, status was %d\n", in sdw_handle_slave_status()
1863 i, slave->status); in sdw_handle_slave_status()
1864 sdw_modify_slave_status(slave, SDW_SLAVE_UNATTACHED); in sdw_handle_slave_status()
1867 ret = sdw_update_slave_status(slave, status[i]); in sdw_handle_slave_status()
1869 dev_warn(&slave->dev, "Update Slave status failed:%d\n", ret); in sdw_handle_slave_status()
1874 dev_dbg(bus->dev, "Slave attached, programming device number\n"); in sdw_handle_slave_status()
1894 /* Continue to check other slave statuses */ in sdw_handle_slave_status()
1896 mutex_lock(&bus->bus_lock); in sdw_handle_slave_status()
1897 if (test_bit(i, bus->assigned) == false) { in sdw_handle_slave_status()
1898 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1901 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1903 slave = sdw_get_slave(bus, i); in sdw_handle_slave_status()
1904 if (!slave) in sdw_handle_slave_status()
1911 if (slave->status == SDW_SLAVE_UNATTACHED) in sdw_handle_slave_status()
1914 dev_warn(&slave->dev, "Slave %d state check2: UNATTACHED, status was %d\n", in sdw_handle_slave_status()
1915 i, slave->status); in sdw_handle_slave_status()
1917 sdw_modify_slave_status(slave, SDW_SLAVE_UNATTACHED); in sdw_handle_slave_status()
1921 ret = sdw_handle_slave_alerts(slave); in sdw_handle_slave_status()
1923 dev_err(&slave->dev, in sdw_handle_slave_status()
1924 "Slave %d alert handling failed: %d\n", in sdw_handle_slave_status()
1929 if (slave->status == SDW_SLAVE_ATTACHED) in sdw_handle_slave_status()
1932 prev_status = slave->status; in sdw_handle_slave_status()
1933 sdw_modify_slave_status(slave, SDW_SLAVE_ATTACHED); in sdw_handle_slave_status()
1940 ret = sdw_initialize_slave(slave); in sdw_handle_slave_status()
1942 dev_err(&slave->dev, in sdw_handle_slave_status()
1943 "Slave %d initialization failed: %d\n", in sdw_handle_slave_status()
1949 dev_err(&slave->dev, "Invalid slave %d status:%d\n", in sdw_handle_slave_status()
1954 ret = sdw_update_slave_status(slave, status[i]); in sdw_handle_slave_status()
1956 dev_err(&slave->dev, in sdw_handle_slave_status()
1957 "Update Slave status failed:%d\n", ret); in sdw_handle_slave_status()
1959 dev_dbg(&slave->dev, in sdw_handle_slave_status()
1960 "signaling initialization completion for Slave %d\n", in sdw_handle_slave_status()
1961 slave->dev_num); in sdw_handle_slave_status()
1963 complete_all(&slave->initialization_complete); in sdw_handle_slave_status()
1972 * This would be a no-op in case the peripheral was being resumed in sdw_handle_slave_status()
1975 pm_request_resume(&slave->dev); in sdw_handle_slave_status()
1985 struct sdw_slave *slave; in sdw_clear_slave_status() local
1988 /* Check all non-zero devices */ in sdw_clear_slave_status()
1990 mutex_lock(&bus->bus_lock); in sdw_clear_slave_status()
1991 if (test_bit(i, bus->assigned) == false) { in sdw_clear_slave_status()
1992 mutex_unlock(&bus->bus_lock); in sdw_clear_slave_status()
1995 mutex_unlock(&bus->bus_lock); in sdw_clear_slave_status()
1997 slave = sdw_get_slave(bus, i); in sdw_clear_slave_status()
1998 if (!slave) in sdw_clear_slave_status()
2001 if (slave->status != SDW_SLAVE_UNATTACHED) { in sdw_clear_slave_status()
2002 sdw_modify_slave_status(slave, SDW_SLAVE_UNATTACHED); in sdw_clear_slave_status()
2003 slave->first_interrupt_done = false; in sdw_clear_slave_status()
2004 sdw_update_slave_status(slave, SDW_SLAVE_UNATTACHED); in sdw_clear_slave_status()
2008 slave->unattach_request = request; in sdw_clear_slave_status()