Lines Matching +full:d +full:- +full:bus
1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2 // Copyright(c) 2015-17 Intel Corporation.
11 #include "bus.h"
17 static int sdw_get_id(struct sdw_bus *bus) in sdw_get_id() argument
24 bus->id = rc; in sdw_get_id()
26 if (bus->controller_id == -1) in sdw_get_id()
27 bus->controller_id = rc; in sdw_get_id()
33 * sdw_bus_master_add() - add a bus Master instance
34 * @bus: bus instance
38 * Initializes the bus instance, read properties and create child
41 int sdw_bus_master_add(struct sdw_bus *bus, struct device *parent, in sdw_bus_master_add() argument
49 return -ENODEV; in sdw_bus_master_add()
52 ret = sdw_get_id(bus); in sdw_bus_master_add()
54 dev_err(parent, "Failed to get bus id\n"); in sdw_bus_master_add()
58 ret = sdw_master_device_add(bus, parent, fwnode); in sdw_bus_master_add()
60 dev_err(parent, "Failed to add master device at link %d\n", in sdw_bus_master_add()
61 bus->link_id); in sdw_bus_master_add()
65 if (!bus->ops) { in sdw_bus_master_add()
66 dev_err(bus->dev, "SoundWire Bus ops are not set\n"); in sdw_bus_master_add()
67 return -EINVAL; in sdw_bus_master_add()
70 if (!bus->compute_params) { in sdw_bus_master_add()
71 dev_err(bus->dev, in sdw_bus_master_add()
73 return -EINVAL; in sdw_bus_master_add()
79 * grabbed during configuration of a multi-bus stream. in sdw_bus_master_add()
81 lockdep_register_key(&bus->msg_lock_key); in sdw_bus_master_add()
82 __mutex_init(&bus->msg_lock, "msg_lock", &bus->msg_lock_key); in sdw_bus_master_add()
84 lockdep_register_key(&bus->bus_lock_key); in sdw_bus_master_add()
85 __mutex_init(&bus->bus_lock, "bus_lock", &bus->bus_lock_key); in sdw_bus_master_add()
87 INIT_LIST_HEAD(&bus->slaves); in sdw_bus_master_add()
88 INIT_LIST_HEAD(&bus->m_rt_list); in sdw_bus_master_add()
93 bus->multi_link = false; in sdw_bus_master_add()
94 if (bus->ops->read_prop) { in sdw_bus_master_add()
95 ret = bus->ops->read_prop(bus); in sdw_bus_master_add()
97 dev_err(bus->dev, in sdw_bus_master_add()
98 "Bus read properties failed:%d\n", ret); in sdw_bus_master_add()
103 sdw_bus_debugfs_init(bus); in sdw_bus_master_add()
113 *bus->assigned = ~GENMASK(SDW_BROADCAST_DEV_NUM, SDW_ENUM_DEV_NUM); in sdw_bus_master_add()
116 set_bit(SDW_ENUM_DEV_NUM, bus->assigned); in sdw_bus_master_add()
117 set_bit(SDW_BROADCAST_DEV_NUM, bus->assigned); in sdw_bus_master_add()
120 set_bit(SDW_GROUP12_DEV_NUM, bus->assigned); in sdw_bus_master_add()
121 set_bit(SDW_GROUP13_DEV_NUM, bus->assigned); in sdw_bus_master_add()
122 set_bit(SDW_MASTER_DEV_NUM, bus->assigned); in sdw_bus_master_add()
125 * SDW is an enumerable bus, but devices can be powered off. So, in sdw_bus_master_add()
131 if (IS_ENABLED(CONFIG_ACPI) && ACPI_HANDLE(bus->dev)) in sdw_bus_master_add()
132 ret = sdw_acpi_find_slaves(bus); in sdw_bus_master_add()
133 else if (IS_ENABLED(CONFIG_OF) && bus->dev->of_node) in sdw_bus_master_add()
134 ret = sdw_of_find_slaves(bus); in sdw_bus_master_add()
136 ret = -ENOTSUPP; /* No ACPI/DT so error out */ in sdw_bus_master_add()
139 dev_err(bus->dev, "Finding slaves failed:%d\n", ret); in sdw_bus_master_add()
146 * is that the bus will start at highest clock frequency when in sdw_bus_master_add()
152 prop = &bus->prop; in sdw_bus_master_add()
153 bus->params.max_dr_freq = prop->max_clk_freq * SDW_DOUBLE_RATE_FACTOR; in sdw_bus_master_add()
154 bus->params.curr_dr_freq = bus->params.max_dr_freq; in sdw_bus_master_add()
155 bus->params.curr_bank = SDW_BANK0; in sdw_bus_master_add()
156 bus->params.next_bank = SDW_BANK1; in sdw_bus_master_add()
158 ret = sdw_irq_create(bus, fwnode); in sdw_bus_master_add()
169 struct sdw_bus *bus = slave->bus; in sdw_delete_slave() local
175 mutex_lock(&bus->bus_lock); in sdw_delete_slave()
177 if (slave->dev_num) { /* clear dev_num if assigned */ in sdw_delete_slave()
178 clear_bit(slave->dev_num, bus->assigned); in sdw_delete_slave()
179 if (bus->ops && bus->ops->put_device_num) in sdw_delete_slave()
180 bus->ops->put_device_num(bus, slave); in sdw_delete_slave()
182 list_del_init(&slave->node); in sdw_delete_slave()
183 mutex_unlock(&bus->bus_lock); in sdw_delete_slave()
190 * sdw_bus_master_delete() - delete the bus master instance
191 * @bus: bus to be deleted
195 void sdw_bus_master_delete(struct sdw_bus *bus) in sdw_bus_master_delete() argument
197 device_for_each_child(bus->dev, NULL, sdw_delete_slave); in sdw_bus_master_delete()
199 sdw_irq_delete(bus); in sdw_bus_master_delete()
201 sdw_master_device_del(bus); in sdw_bus_master_delete()
203 sdw_bus_debugfs_exit(bus); in sdw_bus_master_delete()
204 lockdep_unregister_key(&bus->bus_lock_key); in sdw_bus_master_delete()
205 lockdep_unregister_key(&bus->msg_lock_key); in sdw_bus_master_delete()
206 ida_free(&sdw_bus_ida, bus->id); in sdw_bus_master_delete()
221 return -ENODATA; in find_response_code()
224 return -ETIMEDOUT; in find_response_code()
227 return -EIO; in find_response_code()
231 static inline int do_transfer(struct sdw_bus *bus, struct sdw_msg *msg) in do_transfer() argument
233 int retry = bus->prop.err_threshold; in do_transfer()
238 resp = bus->ops->xfer_msg(bus, msg); in do_transfer()
242 if (ret == 0 || ret == -ENODATA) in do_transfer()
249 static inline int do_transfer_defer(struct sdw_bus *bus, in do_transfer_defer() argument
252 struct sdw_defer *defer = &bus->defer_msg; in do_transfer_defer()
253 int retry = bus->prop.err_threshold; in do_transfer_defer()
257 defer->msg = msg; in do_transfer_defer()
258 defer->length = msg->len; in do_transfer_defer()
259 init_completion(&defer->complete); in do_transfer_defer()
262 resp = bus->ops->xfer_msg_defer(bus); in do_transfer_defer()
265 if (ret == 0 || ret == -ENODATA) in do_transfer_defer()
272 static int sdw_transfer_unlocked(struct sdw_bus *bus, struct sdw_msg *msg) in sdw_transfer_unlocked() argument
276 ret = do_transfer(bus, msg); in sdw_transfer_unlocked()
277 if (ret != 0 && ret != -ENODATA) in sdw_transfer_unlocked()
278 dev_err(bus->dev, "trf on Slave %d failed:%d %s addr %x count %d\n", in sdw_transfer_unlocked()
279 msg->dev_num, ret, in sdw_transfer_unlocked()
280 (msg->flags & SDW_MSG_FLAG_WRITE) ? "write" : "read", in sdw_transfer_unlocked()
281 msg->addr, msg->len); in sdw_transfer_unlocked()
287 * sdw_transfer() - Synchronous transfer message to a SDW Slave device
288 * @bus: SDW bus
291 int sdw_transfer(struct sdw_bus *bus, struct sdw_msg *msg) in sdw_transfer() argument
295 mutex_lock(&bus->msg_lock); in sdw_transfer()
297 ret = sdw_transfer_unlocked(bus, msg); in sdw_transfer()
299 mutex_unlock(&bus->msg_lock); in sdw_transfer()
305 * sdw_show_ping_status() - Direct report of PING status, to be used by Peripheral drivers
306 * @bus: SDW bus
309 void sdw_show_ping_status(struct sdw_bus *bus, bool sync_delay) in sdw_show_ping_status() argument
313 if (!bus->ops->read_ping_status) in sdw_show_ping_status()
317 * wait for peripheral to sync if desired. 10-15ms should be more than in sdw_show_ping_status()
323 mutex_lock(&bus->msg_lock); in sdw_show_ping_status()
325 status = bus->ops->read_ping_status(bus); in sdw_show_ping_status()
327 mutex_unlock(&bus->msg_lock); in sdw_show_ping_status()
330 dev_warn(bus->dev, "%s: no peripherals attached\n", __func__); in sdw_show_ping_status()
332 dev_dbg(bus->dev, "PING status: %#x\n", status); in sdw_show_ping_status()
337 * sdw_transfer_defer() - Asynchronously transfer message to a SDW Slave device
338 * @bus: SDW bus
343 int sdw_transfer_defer(struct sdw_bus *bus, struct sdw_msg *msg) in sdw_transfer_defer() argument
347 if (!bus->ops->xfer_msg_defer) in sdw_transfer_defer()
348 return -ENOTSUPP; in sdw_transfer_defer()
350 ret = do_transfer_defer(bus, msg); in sdw_transfer_defer()
351 if (ret != 0 && ret != -ENODATA) in sdw_transfer_defer()
352 dev_err(bus->dev, "Defer trf on Slave %d failed:%d\n", in sdw_transfer_defer()
353 msg->dev_num, ret); in sdw_transfer_defer()
362 msg->addr = addr; /* addr is 16 bit and truncated here */ in sdw_fill_msg()
363 msg->len = count; in sdw_fill_msg()
364 msg->dev_num = dev_num; in sdw_fill_msg()
365 msg->flags = flags; in sdw_fill_msg()
366 msg->buf = buf; in sdw_fill_msg()
373 return -EINVAL; in sdw_fill_msg()
377 if (slave && !slave->prop.paging_support) in sdw_fill_msg()
379 /* no need for else as that will fall-through to paging */ in sdw_fill_msg()
384 pr_err("SDW: Invalid device for paging :%d\n", dev_num); in sdw_fill_msg()
385 return -EINVAL; in sdw_fill_msg()
390 return -EINVAL; in sdw_fill_msg()
393 if (!slave->prop.paging_support) { in sdw_fill_msg()
394 dev_err(&slave->dev, in sdw_fill_msg()
396 return -EINVAL; in sdw_fill_msg()
399 msg->addr_page1 = FIELD_GET(SDW_SCP_ADDRPAGE1_MASK, addr); in sdw_fill_msg()
400 msg->addr_page2 = FIELD_GET(SDW_SCP_ADDRPAGE2_MASK, addr); in sdw_fill_msg()
401 msg->addr |= BIT(15); in sdw_fill_msg()
402 msg->page = true; in sdw_fill_msg()
420 size = min_t(size_t, count, (SDW_REGADDR + 1) - (addr & SDW_REGADDR)); in sdw_ntransfer_no_pm()
422 ret = sdw_fill_msg(&msg, slave, addr, size, slave->dev_num, flags, val); in sdw_ntransfer_no_pm()
426 ret = sdw_transfer(slave->bus, &msg); in sdw_ntransfer_no_pm()
427 if (ret < 0 && !slave->is_mockup_device) in sdw_ntransfer_no_pm()
432 count -= size; in sdw_ntransfer_no_pm()
439 * sdw_nread_no_pm() - Read "n" contiguous SDW Slave registers with no PM
455 * sdw_nwrite_no_pm() - Write "n" contiguous SDW Slave registers with no PM
471 * sdw_write_no_pm() - Write a SDW Slave register with no PM
483 sdw_bread_no_pm(struct sdw_bus *bus, u16 dev_num, u32 addr) in sdw_bread_no_pm() argument
494 ret = sdw_transfer(bus, &msg); in sdw_bread_no_pm()
502 sdw_bwrite_no_pm(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value) in sdw_bwrite_no_pm() argument
512 return sdw_transfer(bus, &msg); in sdw_bwrite_no_pm()
515 int sdw_bread_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr) in sdw_bread_no_pm_unlocked() argument
526 ret = sdw_transfer_unlocked(bus, &msg); in sdw_bread_no_pm_unlocked()
534 int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value) in sdw_bwrite_no_pm_unlocked() argument
544 return sdw_transfer_unlocked(bus, &msg); in sdw_bwrite_no_pm_unlocked()
549 * sdw_read_no_pm() - Read a SDW Slave register with no PM
579 /* Read-Modify-Write Slave register */
594 * sdw_nread() - Read "n" contiguous SDW Slave registers
609 ret = pm_runtime_get_sync(&slave->dev); in sdw_nread()
610 if (ret < 0 && ret != -EACCES) { in sdw_nread()
611 pm_runtime_put_noidle(&slave->dev); in sdw_nread()
617 pm_runtime_mark_last_busy(&slave->dev); in sdw_nread()
618 pm_runtime_put(&slave->dev); in sdw_nread()
625 * sdw_nwrite() - Write "n" contiguous SDW Slave registers
640 ret = pm_runtime_get_sync(&slave->dev); in sdw_nwrite()
641 if (ret < 0 && ret != -EACCES) { in sdw_nwrite()
642 pm_runtime_put_noidle(&slave->dev); in sdw_nwrite()
648 pm_runtime_mark_last_busy(&slave->dev); in sdw_nwrite()
649 pm_runtime_put(&slave->dev); in sdw_nwrite()
656 * sdw_read() - Read a SDW Slave register
677 * sdw_write() - Write a SDW Slave register
696 static struct sdw_slave *sdw_get_slave(struct sdw_bus *bus, int i) in sdw_get_slave() argument
700 list_for_each_entry(slave, &bus->slaves, node) { in sdw_get_slave()
701 if (slave->dev_num == i) in sdw_get_slave()
710 if (slave->id.mfg_id != id.mfg_id || in sdw_compare_devid()
711 slave->id.part_id != id.part_id || in sdw_compare_devid()
712 slave->id.class_id != id.class_id || in sdw_compare_devid()
713 (slave->id.unique_id != SDW_IGNORED_UNIQUE_ID && in sdw_compare_devid()
714 slave->id.unique_id != id.unique_id)) in sdw_compare_devid()
715 return -ENODEV; in sdw_compare_devid()
724 struct sdw_bus *bus = slave->bus; in sdw_get_device_num() local
727 if (bus->ops && bus->ops->get_device_num) { in sdw_get_device_num()
728 bit = bus->ops->get_device_num(bus, slave); in sdw_get_device_num()
732 bit = find_first_zero_bit(bus->assigned, SDW_MAX_DEVICES); in sdw_get_device_num()
734 bit = -ENODEV; in sdw_get_device_num()
743 set_bit(bit, bus->assigned); in sdw_get_device_num()
751 struct sdw_bus *bus = slave->bus; in sdw_assign_device_num() local
756 if (!slave->dev_num) { in sdw_assign_device_num()
757 if (!slave->dev_num_sticky) { in sdw_assign_device_num()
758 mutex_lock(&slave->bus->bus_lock); in sdw_assign_device_num()
760 mutex_unlock(&slave->bus->bus_lock); in sdw_assign_device_num()
762 dev_err(bus->dev, "Get dev_num failed: %d\n", in sdw_assign_device_num()
766 slave->dev_num = dev_num; in sdw_assign_device_num()
767 slave->dev_num_sticky = dev_num; in sdw_assign_device_num()
770 slave->dev_num = slave->dev_num_sticky; in sdw_assign_device_num()
775 dev_dbg(bus->dev, in sdw_assign_device_num()
776 "Slave already registered, reusing dev_num:%d\n", in sdw_assign_device_num()
777 slave->dev_num); in sdw_assign_device_num()
779 /* Clear the slave->dev_num to transfer message on device 0 */ in sdw_assign_device_num()
780 dev_num = slave->dev_num; in sdw_assign_device_num()
781 slave->dev_num = 0; in sdw_assign_device_num()
785 dev_err(bus->dev, "Program device_num %d failed: %d\n", in sdw_assign_device_num()
791 slave->dev_num = slave->dev_num_sticky; in sdw_assign_device_num()
793 if (bus->ops && bus->ops->new_peripheral_assigned) in sdw_assign_device_num()
794 bus->ops->new_peripheral_assigned(bus, slave, dev_num); in sdw_assign_device_num()
799 void sdw_extract_slave_id(struct sdw_bus *bus, in sdw_extract_slave_id() argument
802 dev_dbg(bus->dev, "SDW Slave Addr: %llx\n", addr); in sdw_extract_slave_id()
804 id->sdw_version = SDW_VERSION(addr); in sdw_extract_slave_id()
805 id->unique_id = SDW_UNIQUE_ID(addr); in sdw_extract_slave_id()
806 id->mfg_id = SDW_MFG_ID(addr); in sdw_extract_slave_id()
807 id->part_id = SDW_PART_ID(addr); in sdw_extract_slave_id()
808 id->class_id = SDW_CLASS_ID(addr); in sdw_extract_slave_id()
810 dev_dbg(bus->dev, in sdw_extract_slave_id()
812 id->class_id, id->mfg_id, id->part_id, id->unique_id, id->sdw_version); in sdw_extract_slave_id()
816 static int sdw_program_device_num(struct sdw_bus *bus, bool *programmed) in sdw_program_device_num() argument
835 ret = sdw_transfer(bus, &msg); in sdw_program_device_num()
836 if (ret == -ENODATA) { /* end of device id reads */ in sdw_program_device_num()
837 dev_dbg(bus->dev, "No more devices to enumerate\n"); in sdw_program_device_num()
842 dev_err(bus->dev, "DEVID read fail:%d\n", ret); in sdw_program_device_num()
854 sdw_extract_slave_id(bus, addr, &id); in sdw_program_device_num()
858 list_for_each_entry_safe(slave, _s, &bus->slaves, node) { in sdw_program_device_num()
863 * To prevent skipping state-machine stages don't in sdw_program_device_num()
869 if (slave->status != SDW_SLAVE_UNATTACHED) in sdw_program_device_num()
880 dev_err(bus->dev, in sdw_program_device_num()
881 "Assign dev_num failed:%d\n", in sdw_program_device_num()
901 sdw_slave_add(bus, &id, NULL); in sdw_program_device_num()
903 dev_err(bus->dev, "Slave Entry not found\n"); in sdw_program_device_num()
922 struct sdw_bus *bus = slave->bus; in sdw_modify_slave_status() local
924 mutex_lock(&bus->bus_lock); in sdw_modify_slave_status()
926 dev_vdbg(bus->dev, in sdw_modify_slave_status()
927 "changing status slave %d status %d new status %d\n", in sdw_modify_slave_status()
928 slave->dev_num, slave->status, status); in sdw_modify_slave_status()
931 dev_dbg(&slave->dev, in sdw_modify_slave_status()
932 "initializing enumeration and init completion for Slave %d\n", in sdw_modify_slave_status()
933 slave->dev_num); in sdw_modify_slave_status()
935 reinit_completion(&slave->enumeration_complete); in sdw_modify_slave_status()
936 reinit_completion(&slave->initialization_complete); in sdw_modify_slave_status()
939 (slave->status == SDW_SLAVE_UNATTACHED)) { in sdw_modify_slave_status()
940 dev_dbg(&slave->dev, in sdw_modify_slave_status()
941 "signaling enumeration completion for Slave %d\n", in sdw_modify_slave_status()
942 slave->dev_num); in sdw_modify_slave_status()
944 complete_all(&slave->enumeration_complete); in sdw_modify_slave_status()
946 slave->status = status; in sdw_modify_slave_status()
947 mutex_unlock(&bus->bus_lock); in sdw_modify_slave_status()
956 mutex_lock(&slave->sdw_dev_lock); in sdw_slave_clk_stop_callback()
958 if (slave->probed) { in sdw_slave_clk_stop_callback()
959 struct device *dev = &slave->dev; in sdw_slave_clk_stop_callback()
960 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver); in sdw_slave_clk_stop_callback()
962 if (drv->ops && drv->ops->clk_stop) in sdw_slave_clk_stop_callback()
963 ret = drv->ops->clk_stop(slave, mode, type); in sdw_slave_clk_stop_callback()
966 mutex_unlock(&slave->sdw_dev_lock); in sdw_slave_clk_stop_callback()
979 wake_en = slave->prop.wake_capable; in sdw_slave_clk_stop_prepare()
992 if (ret != -ENODATA) in sdw_slave_clk_stop_prepare()
993 dev_err(&slave->dev, "SDW_SCP_SYSTEMCTRL read failed:%d\n", ret); in sdw_slave_clk_stop_prepare()
1002 if (ret < 0 && ret != -ENODATA) in sdw_slave_clk_stop_prepare()
1003 dev_err(&slave->dev, "SDW_SCP_SYSTEMCTRL write failed:%d\n", ret); in sdw_slave_clk_stop_prepare()
1008 static int sdw_bus_wait_for_clk_prep_deprep(struct sdw_bus *bus, u16 dev_num) in sdw_bus_wait_for_clk_prep_deprep() argument
1010 int retry = bus->clk_stop_timeout; in sdw_bus_wait_for_clk_prep_deprep()
1014 val = sdw_bread_no_pm(bus, dev_num, SDW_SCP_STAT); in sdw_bus_wait_for_clk_prep_deprep()
1016 if (val != -ENODATA) in sdw_bus_wait_for_clk_prep_deprep()
1017 dev_err(bus->dev, "SDW_SCP_STAT bread failed:%d\n", val); in sdw_bus_wait_for_clk_prep_deprep()
1022 dev_dbg(bus->dev, "clock stop prep/de-prep done slave:%d\n", in sdw_bus_wait_for_clk_prep_deprep()
1028 retry--; in sdw_bus_wait_for_clk_prep_deprep()
1031 dev_err(bus->dev, "clock stop prep/de-prep failed slave:%d\n", in sdw_bus_wait_for_clk_prep_deprep()
1034 return -ETIMEDOUT; in sdw_bus_wait_for_clk_prep_deprep()
1040 * @bus: SDW bus instance
1044 int sdw_bus_prep_clk_stop(struct sdw_bus *bus) in sdw_bus_prep_clk_stop() argument
1056 * replies with Command Ignored/-ENODATA, we continue in sdw_bus_prep_clk_stop()
1059 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_prep_clk_stop()
1060 if (!slave->dev_num) in sdw_bus_prep_clk_stop()
1063 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_prep_clk_stop()
1064 slave->status != SDW_SLAVE_ALERT) in sdw_bus_prep_clk_stop()
1067 /* Identify if Slave(s) are available on Bus */ in sdw_bus_prep_clk_stop()
1073 if (ret < 0 && ret != -ENODATA) { in sdw_bus_prep_clk_stop()
1074 dev_err(&slave->dev, "clock stop pre-prepare cb failed:%d\n", ret); in sdw_bus_prep_clk_stop()
1079 if (!slave->prop.simple_clk_stop_capable) { in sdw_bus_prep_clk_stop()
1085 if (ret < 0 && ret != -ENODATA) { in sdw_bus_prep_clk_stop()
1086 dev_err(&slave->dev, "clock stop prepare failed:%d\n", ret); in sdw_bus_prep_clk_stop()
1101 ret = sdw_bus_wait_for_clk_prep_deprep(bus, in sdw_bus_prep_clk_stop()
1105 * Command_Ignored/-ENODATA, we don't need to continue with the in sdw_bus_prep_clk_stop()
1114 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_prep_clk_stop()
1115 if (!slave->dev_num) in sdw_bus_prep_clk_stop()
1118 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_prep_clk_stop()
1119 slave->status != SDW_SLAVE_ALERT) in sdw_bus_prep_clk_stop()
1126 if (ret < 0 && ret != -ENODATA) { in sdw_bus_prep_clk_stop()
1127 dev_err(&slave->dev, "clock stop post-prepare cb failed:%d\n", ret); in sdw_bus_prep_clk_stop()
1137 * sdw_bus_clk_stop: stop bus clock
1139 * @bus: SDW bus instance
1144 int sdw_bus_clk_stop(struct sdw_bus *bus) in sdw_bus_clk_stop() argument
1152 ret = sdw_bwrite_no_pm(bus, SDW_BROADCAST_DEV_NUM, in sdw_bus_clk_stop()
1155 if (ret != -ENODATA) in sdw_bus_clk_stop()
1156 dev_err(bus->dev, "ClockStopNow Broadcast msg failed %d\n", ret); in sdw_bus_clk_stop()
1167 * @bus: SDW bus instance
1169 * This De-prepares the Slaves by exiting Clock Stop Mode 0. For the Slaves
1170 * exiting Clock Stop Mode 1, they will be de-prepared after they enumerate
1173 int sdw_bus_exit_clk_stop(struct sdw_bus *bus) in sdw_bus_exit_clk_stop() argument
1181 * In order to save on transition time, de-prepare in sdw_bus_exit_clk_stop()
1183 * de-prepared after clock resume. in sdw_bus_exit_clk_stop()
1185 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_exit_clk_stop()
1186 if (!slave->dev_num) in sdw_bus_exit_clk_stop()
1189 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_exit_clk_stop()
1190 slave->status != SDW_SLAVE_ALERT) in sdw_bus_exit_clk_stop()
1193 /* Identify if Slave(s) are available on Bus */ in sdw_bus_exit_clk_stop()
1199 dev_warn(&slave->dev, "clock stop pre-deprepare cb failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1201 /* Only de-prepare a Slave device if needed */ in sdw_bus_exit_clk_stop()
1202 if (!slave->prop.simple_clk_stop_capable) { in sdw_bus_exit_clk_stop()
1209 dev_warn(&slave->dev, "clock stop deprepare failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1213 /* Skip remaining clock stop de-preparation if no Slave is attached */ in sdw_bus_exit_clk_stop()
1222 ret = sdw_bus_wait_for_clk_prep_deprep(bus, SDW_BROADCAST_DEV_NUM); in sdw_bus_exit_clk_stop()
1224 dev_warn(bus->dev, "clock stop deprepare wait failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1227 list_for_each_entry(slave, &bus->slaves, node) { in sdw_bus_exit_clk_stop()
1228 if (!slave->dev_num) in sdw_bus_exit_clk_stop()
1231 if (slave->status != SDW_SLAVE_ATTACHED && in sdw_bus_exit_clk_stop()
1232 slave->status != SDW_SLAVE_ALERT) in sdw_bus_exit_clk_stop()
1238 dev_warn(&slave->dev, "clock stop post-deprepare cb failed:%d\n", ret); in sdw_bus_exit_clk_stop()
1252 if (slave->bus->params.s_data_mode != SDW_PORT_DATA_MODE_NORMAL) { in sdw_configure_dpn_intr()
1253 dev_dbg(&slave->dev, "TEST FAIL interrupt %s\n", in sdw_configure_dpn_intr()
1271 dev_err(&slave->dev, in sdw_configure_dpn_intr()
1272 "SDW_DPN_INTMASK write failed:%d\n", val); in sdw_configure_dpn_intr()
1279 u32 mclk_freq = slave->bus->prop.mclk_freq; in sdw_slave_set_frequency()
1280 u32 curr_freq = slave->bus->params.curr_dr_freq >> 1; in sdw_slave_set_frequency()
1288 * devices. They may also be used for 1.2+/non-SDCA devices. in sdw_slave_set_frequency()
1292 if (!slave->id.class_id && !slave->prop.clock_reg_supported) in sdw_slave_set_frequency()
1296 dev_err(&slave->dev, in sdw_slave_set_frequency()
1297 "no bus MCLK, cannot set SDW_SCP_BUS_CLOCK_BASE\n"); in sdw_slave_set_frequency()
1298 return -EINVAL; in sdw_slave_set_frequency()
1326 dev_err(&slave->dev, in sdw_slave_set_frequency()
1327 "Unsupported clock base, mclk %d\n", in sdw_slave_set_frequency()
1329 return -EINVAL; in sdw_slave_set_frequency()
1333 dev_err(&slave->dev, in sdw_slave_set_frequency()
1334 "mclk %d is not multiple of bus curr_freq %d\n", in sdw_slave_set_frequency()
1336 return -EINVAL; in sdw_slave_set_frequency()
1342 * map scale to Table 90 of SoundWire 1.2 spec - and check in sdw_slave_set_frequency()
1348 dev_err(&slave->dev, in sdw_slave_set_frequency()
1349 "No match found for scale %d, bus mclk %d curr_freq %d\n", in sdw_slave_set_frequency()
1351 return -EINVAL; in sdw_slave_set_frequency()
1357 dev_err(&slave->dev, in sdw_slave_set_frequency()
1358 "SDW_SCP_BUS_CLOCK_BASE write failed:%d\n", ret); in sdw_slave_set_frequency()
1365 dev_err(&slave->dev, in sdw_slave_set_frequency()
1366 "SDW_SCP_BUSCLOCK_SCALE_B0 write failed:%d\n", ret); in sdw_slave_set_frequency()
1371 dev_err(&slave->dev, in sdw_slave_set_frequency()
1372 "SDW_SCP_BUSCLOCK_SCALE_B1 write failed:%d\n", ret); in sdw_slave_set_frequency()
1374 dev_dbg(&slave->dev, in sdw_slave_set_frequency()
1375 "Configured bus base %d, scale %d, mclk %d, curr_freq %d\n", in sdw_slave_set_frequency()
1383 struct sdw_slave_prop *prop = &slave->prop; in sdw_initialize_slave()
1392 if (slave->bus->prop.quirks & SDW_MASTER_QUIRKS_CLEAR_INITIAL_CLASH) { in sdw_initialize_slave()
1393 /* Clear bus clash interrupt before enabling interrupt mask */ in sdw_initialize_slave()
1396 dev_err(&slave->dev, in sdw_initialize_slave()
1397 "SDW_SCP_INT1 (BUS_CLASH) read failed:%d\n", status); in sdw_initialize_slave()
1401 dev_warn(&slave->dev, "Bus clash detected before INT mask is enabled\n"); in sdw_initialize_slave()
1404 dev_err(&slave->dev, in sdw_initialize_slave()
1405 "SDW_SCP_INT1 (BUS_CLASH) write failed:%d\n", ret); in sdw_initialize_slave()
1410 if ((slave->bus->prop.quirks & SDW_MASTER_QUIRKS_CLEAR_INITIAL_PARITY) && in sdw_initialize_slave()
1411 !(slave->prop.quirks & SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY)) { in sdw_initialize_slave()
1415 dev_err(&slave->dev, in sdw_initialize_slave()
1416 "SDW_SCP_INT1 (PARITY) read failed:%d\n", status); in sdw_initialize_slave()
1420 dev_warn(&slave->dev, "PARITY error detected before INT mask is enabled\n"); in sdw_initialize_slave()
1423 dev_err(&slave->dev, in sdw_initialize_slave()
1424 "SDW_SCP_INT1 (PARITY) write failed:%d\n", ret); in sdw_initialize_slave()
1431 * Set SCP_INT1_MASK register, typically bus clash and in sdw_initialize_slave()
1432 * implementation-defined interrupt mask. The Parity detection in sdw_initialize_slave()
1434 * device-dependent, it might e.g. only be enabled in in sdw_initialize_slave()
1435 * steady-state after a couple of frames. in sdw_initialize_slave()
1437 val = slave->prop.scp_int1_mask; in sdw_initialize_slave()
1442 dev_err(&slave->dev, in sdw_initialize_slave()
1443 "SDW_SCP_INTMASK1 write failed:%d\n", ret); in sdw_initialize_slave()
1448 if (!slave->prop.dp0_prop) in sdw_initialize_slave()
1452 val = prop->dp0_prop->imp_def_interrupts; in sdw_initialize_slave()
1457 dev_err(&slave->dev, in sdw_initialize_slave()
1458 "SDW_DP0_INTMASK read failed:%d\n", ret); in sdw_initialize_slave()
1469 dev_err(&slave->dev, in sdw_handle_dp0_interrupt()
1470 "SDW_DP0_INT read failed:%d\n", status); in sdw_handle_dp0_interrupt()
1478 dev_err(&slave->dev, "Test fail for port 0\n"); in sdw_handle_dp0_interrupt()
1488 complete(&slave->port_ready[0]); in sdw_handle_dp0_interrupt()
1493 dev_err(&slave->dev, "BRA failed\n"); in sdw_handle_dp0_interrupt()
1508 dev_err(&slave->dev, in sdw_handle_dp0_interrupt()
1509 "SDW_DP0_INT write failed:%d\n", ret); in sdw_handle_dp0_interrupt()
1516 dev_err(&slave->dev, in sdw_handle_dp0_interrupt()
1517 "SDW_DP0_INT read failed:%d\n", status2); in sdw_handle_dp0_interrupt()
1529 dev_warn(&slave->dev, "Reached MAX_RETRY on DP0 read\n"); in sdw_handle_dp0_interrupt()
1547 dev_err(&slave->dev, in sdw_handle_port_interrupt()
1548 "SDW_DPN_INT read failed:%d\n", status); in sdw_handle_port_interrupt()
1557 dev_err(&slave->dev, "Test fail for port:%d\n", port); in sdw_handle_port_interrupt()
1566 complete(&slave->port_ready[port]); in sdw_handle_port_interrupt()
1581 dev_err(&slave->dev, in sdw_handle_port_interrupt()
1582 "SDW_DPN_INT write failed:%d\n", ret); in sdw_handle_port_interrupt()
1589 dev_err(&slave->dev, in sdw_handle_port_interrupt()
1590 "SDW_DPN_INT read failed:%d\n", status2); in sdw_handle_port_interrupt()
1602 dev_warn(&slave->dev, "Reached MAX_RETRY on port read"); in sdw_handle_port_interrupt()
1621 ret = pm_runtime_get_sync(&slave->dev); in sdw_handle_slave_alerts()
1622 if (ret < 0 && ret != -EACCES) { in sdw_handle_slave_alerts()
1623 dev_err(&slave->dev, "Failed to resume device: %d\n", ret); in sdw_handle_slave_alerts()
1624 pm_runtime_put_noidle(&slave->dev); in sdw_handle_slave_alerts()
1631 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1632 "SDW_SCP_INT1 read failed:%d\n", ret); in sdw_handle_slave_alerts()
1639 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1640 "SDW_SCP_INT2/3 read failed:%d\n", ret); in sdw_handle_slave_alerts()
1644 if (slave->id.class_id) { in sdw_handle_slave_alerts()
1647 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1648 "SDW_DP0_INT read failed:%d\n", ret); in sdw_handle_slave_alerts()
1658 * Check parity, bus clash and Slave (impl defined) in sdw_handle_slave_alerts()
1662 parity_check = slave->prop.scp_int1_mask & SDW_SCP_INT1_PARITY; in sdw_handle_slave_alerts()
1663 parity_quirk = !slave->first_interrupt_done && in sdw_handle_slave_alerts()
1664 (slave->prop.quirks & SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY); in sdw_handle_slave_alerts()
1667 dev_err(&slave->dev, "Parity error detected\n"); in sdw_handle_slave_alerts()
1672 if (slave->prop.scp_int1_mask & SDW_SCP_INT1_BUS_CLASH) in sdw_handle_slave_alerts()
1673 dev_err(&slave->dev, "Bus clash detected\n"); in sdw_handle_slave_alerts()
1678 * When bus clash or parity errors are detected, such errors in sdw_handle_slave_alerts()
1680 * TODO: In such scenario, reset bus. Make this configurable in sdw_handle_slave_alerts()
1681 * via sysfs property with bus reset being the default. in sdw_handle_slave_alerts()
1685 if (slave->prop.scp_int1_mask & SDW_SCP_INT1_IMPL_DEF) { in sdw_handle_slave_alerts()
1686 dev_dbg(&slave->dev, "Slave impl defined interrupt\n"); in sdw_handle_slave_alerts()
1696 /* Check port 0 - 3 interrupts */ in sdw_handle_slave_alerts()
1732 mutex_lock(&slave->sdw_dev_lock); in sdw_handle_slave_alerts()
1734 if (slave->probed) { in sdw_handle_slave_alerts()
1735 struct device *dev = &slave->dev; in sdw_handle_slave_alerts()
1736 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver); in sdw_handle_slave_alerts()
1738 if (slave->prop.use_domain_irq && slave->irq) in sdw_handle_slave_alerts()
1739 handle_nested_irq(slave->irq); in sdw_handle_slave_alerts()
1741 if (drv->ops && drv->ops->interrupt_callback) { in sdw_handle_slave_alerts()
1747 drv->ops->interrupt_callback(slave, &slave_intr); in sdw_handle_slave_alerts()
1751 mutex_unlock(&slave->sdw_dev_lock); in sdw_handle_slave_alerts()
1757 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1758 "SDW_SCP_INT1 write failed:%d\n", ret); in sdw_handle_slave_alerts()
1763 slave->first_interrupt_done = true; in sdw_handle_slave_alerts()
1771 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1772 "SDW_SCP_INT1 recheck read failed:%d\n", ret); in sdw_handle_slave_alerts()
1779 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1780 "SDW_SCP_INT2/3 recheck read failed:%d\n", ret); in sdw_handle_slave_alerts()
1784 if (slave->id.class_id) { in sdw_handle_slave_alerts()
1787 dev_err(&slave->dev, in sdw_handle_slave_alerts()
1788 "SDW_DP0_INT recheck read failed:%d\n", ret); in sdw_handle_slave_alerts()
1809 dev_warn(&slave->dev, "Reached MAX_RETRY on alert read\n"); in sdw_handle_slave_alerts()
1812 pm_runtime_mark_last_busy(&slave->dev); in sdw_handle_slave_alerts()
1813 pm_runtime_put_autosuspend(&slave->dev); in sdw_handle_slave_alerts()
1823 mutex_lock(&slave->sdw_dev_lock); in sdw_update_slave_status()
1825 if (slave->probed) { in sdw_update_slave_status()
1826 struct device *dev = &slave->dev; in sdw_update_slave_status()
1827 struct sdw_driver *drv = drv_to_sdw_driver(dev->driver); in sdw_update_slave_status()
1829 if (drv->ops && drv->ops->update_status) in sdw_update_slave_status()
1830 ret = drv->ops->update_status(slave, status); in sdw_update_slave_status()
1833 mutex_unlock(&slave->sdw_dev_lock); in sdw_update_slave_status()
1839 * sdw_handle_slave_status() - Handle Slave status
1840 * @bus: SDW bus instance
1843 int sdw_handle_slave_status(struct sdw_bus *bus, in sdw_handle_slave_status() argument
1851 /* first check if any Slaves fell off the bus */ in sdw_handle_slave_status()
1853 mutex_lock(&bus->bus_lock); in sdw_handle_slave_status()
1854 if (test_bit(i, bus->assigned) == false) { in sdw_handle_slave_status()
1855 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1858 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1860 slave = sdw_get_slave(bus, i); in sdw_handle_slave_status()
1865 slave->status != SDW_SLAVE_UNATTACHED) { in sdw_handle_slave_status()
1866 dev_warn(&slave->dev, "Slave %d state check1: UNATTACHED, status was %d\n", in sdw_handle_slave_status()
1867 i, slave->status); in sdw_handle_slave_status()
1873 dev_warn(&slave->dev, "Update Slave status failed:%d\n", ret); in sdw_handle_slave_status()
1878 dev_dbg(bus->dev, "Slave attached, programming device number\n"); in sdw_handle_slave_status()
1893 sdw_program_device_num(bus, &id_programmed); in sdw_handle_slave_status()
1900 mutex_lock(&bus->bus_lock); in sdw_handle_slave_status()
1901 if (test_bit(i, bus->assigned) == false) { in sdw_handle_slave_status()
1902 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1905 mutex_unlock(&bus->bus_lock); in sdw_handle_slave_status()
1907 slave = sdw_get_slave(bus, i); in sdw_handle_slave_status()
1915 if (slave->status == SDW_SLAVE_UNATTACHED) in sdw_handle_slave_status()
1918 dev_warn(&slave->dev, "Slave %d state check2: UNATTACHED, status was %d\n", in sdw_handle_slave_status()
1919 i, slave->status); in sdw_handle_slave_status()
1927 dev_err(&slave->dev, in sdw_handle_slave_status()
1928 "Slave %d alert handling failed: %d\n", in sdw_handle_slave_status()
1933 if (slave->status == SDW_SLAVE_ATTACHED) in sdw_handle_slave_status()
1936 prev_status = slave->status; in sdw_handle_slave_status()
1946 dev_err(&slave->dev, in sdw_handle_slave_status()
1947 "Slave %d initialization failed: %d\n", in sdw_handle_slave_status()
1953 dev_err(&slave->dev, "Invalid slave %d status:%d\n", in sdw_handle_slave_status()
1960 dev_err(&slave->dev, in sdw_handle_slave_status()
1961 "Update Slave status failed:%d\n", ret); in sdw_handle_slave_status()
1963 dev_dbg(&slave->dev, in sdw_handle_slave_status()
1964 "signaling initialization completion for Slave %d\n", in sdw_handle_slave_status()
1965 slave->dev_num); in sdw_handle_slave_status()
1967 complete_all(&slave->initialization_complete); in sdw_handle_slave_status()
1976 * This would be a no-op in case the peripheral was being resumed in sdw_handle_slave_status()
1979 pm_request_resume(&slave->dev); in sdw_handle_slave_status()
1987 void sdw_clear_slave_status(struct sdw_bus *bus, u32 request) in sdw_clear_slave_status() argument
1992 /* Check all non-zero devices */ in sdw_clear_slave_status()
1994 mutex_lock(&bus->bus_lock); in sdw_clear_slave_status()
1995 if (test_bit(i, bus->assigned) == false) { in sdw_clear_slave_status()
1996 mutex_unlock(&bus->bus_lock); in sdw_clear_slave_status()
1999 mutex_unlock(&bus->bus_lock); in sdw_clear_slave_status()
2001 slave = sdw_get_slave(bus, i); in sdw_clear_slave_status()
2005 if (slave->status != SDW_SLAVE_UNATTACHED) { in sdw_clear_slave_status()
2007 slave->first_interrupt_done = false; in sdw_clear_slave_status()
2012 slave->unattach_request = request; in sdw_clear_slave_status()