Lines Matching +full:dynamic +full:- +full:mode
1 // SPDX-License-Identifier: GPL-2.0
26 * i3c_bus_maintenance_lock - Lock the bus for a maintenance operation
31 * - enabling/disabling slave events
32 * - re-triggering DAA
33 * - changing the dynamic address of a device
34 * - relinquishing mastership
35 * - ...
43 down_write(&bus->lock); in i3c_bus_maintenance_lock()
47 * i3c_bus_maintenance_unlock - Release the bus lock after a maintenance
57 up_write(&bus->lock); in i3c_bus_maintenance_unlock()
61 * i3c_bus_normaluse_lock - Lock the bus for a normal operation
65 * operation (see i3c_bus_maintenance_lock() for a non-exhaustive list of
68 * state or I3C dynamic address).
73 * sure two different communications are not inter-mixed, or access to the
78 down_read(&bus->lock); in i3c_bus_normaluse_lock()
82 * i3c_bus_normaluse_unlock - Release the bus lock after a normal operation
91 up_read(&bus->lock); in i3c_bus_normaluse_unlock()
111 if (dev->type == &i3c_device_type) in dev_to_i3cbus()
112 return dev_to_i3cdev(dev)->bus; in dev_to_i3cbus()
116 return &master->bus; in dev_to_i3cbus()
123 if (dev->type == &i3c_device_type) in dev_to_i3cdesc()
124 return dev_to_i3cdev(dev)->desc; in dev_to_i3cdesc()
128 return master->this; in dev_to_i3cdesc()
141 ret = sprintf(buf, "%x\n", desc->info.bcr); in bcr_show()
158 ret = sprintf(buf, "%x\n", desc->info.dcr); in dcr_show()
175 ret = sprintf(buf, "%llx\n", desc->info.pid); in pid_show()
192 ret = sprintf(buf, "%02x\n", desc->info.dyn_addr); in dynamic_address_show()
200 "hdr-ddr", "hdr-tsp", "hdr-tsl",
211 int mode; in hdrcap_show() local
215 caps = desc->info.hdr_cap; in hdrcap_show()
216 for_each_set_bit(mode, &caps, 8) { in hdrcap_show()
217 if (mode >= ARRAY_SIZE(hdrcap_strings)) in hdrcap_show()
220 if (!hdrcap_strings[mode]) in hdrcap_show()
224 hdrcap_strings[mode]); in hdrcap_show()
306 if (dev->type != &i3c_device_type) in i3c_device_match()
311 if (i3c_device_match_id(i3cdev, i3cdrv->id_table)) in i3c_device_match()
320 struct i3c_driver *driver = drv_to_i3cdrv(dev->driver); in i3c_device_probe()
322 return driver->probe(i3cdev); in i3c_device_probe()
328 struct i3c_driver *driver = drv_to_i3cdrv(dev->driver); in i3c_device_remove()
331 ret = driver->remove(i3cdev); in i3c_device_remove()
355 status = bus->addrslots[bitpos / BITS_PER_LONG]; in i3c_bus_get_addr_slot_status()
370 ptr = bus->addrslots + (bitpos / BITS_PER_LONG); in i3c_bus_set_addr_slot_status()
396 return -ENOMEM; in i3c_bus_get_free_addr()
421 idr_remove(&i3c_bus_idr, i3cbus->id); in i3c_bus_cleanup()
429 init_rwsem(&i3cbus->lock); in i3c_bus_init()
430 INIT_LIST_HEAD(&i3cbus->devs.i2c); in i3c_bus_init()
431 INIT_LIST_HEAD(&i3cbus->devs.i3c); in i3c_bus_init()
433 i3cbus->mode = I3C_BUS_MODE_PURE; in i3c_bus_init()
442 i3cbus->id = ret; in i3c_bus_init()
449 [I3C_BUS_MODE_MIXED_FAST] = "mixed-fast",
450 [I3C_BUS_MODE_MIXED_LIMITED] = "mixed-limited",
451 [I3C_BUS_MODE_MIXED_SLOW] = "mixed-slow",
462 if (i3cbus->mode < 0 || in mode_show()
463 i3cbus->mode >= ARRAY_SIZE(i3c_bus_mode_strings) || in mode_show()
464 !i3c_bus_mode_strings[i3cbus->mode]) in mode_show()
467 ret = sprintf(buf, "%s\n", i3c_bus_mode_strings[i3cbus->mode]); in mode_show()
472 static DEVICE_ATTR_RO(mode);
482 ret = sprintf(buf, "%d-%llx\n", i3cbus->id, in current_master_show()
483 i3cbus->cur_master->info.pid); in current_master_show()
498 ret = sprintf(buf, "%ld\n", i3cbus->scl_rate.i3c); in i3c_scl_frequency_show()
513 ret = sprintf(buf, "%ld\n", i3cbus->scl_rate.i2c); in i2c_scl_frequency_show()
539 if (master->wq) in i3c_masterdev_release()
540 destroy_workqueue(master->wq); in i3c_masterdev_release()
542 WARN_ON(!list_empty(&bus->devs.i2c) || !list_empty(&bus->devs.i3c)); in i3c_masterdev_release()
545 of_node_put(dev->of_node); in i3c_masterdev_release()
552 static int i3c_bus_set_mode(struct i3c_bus *i3cbus, enum i3c_bus_mode mode, in i3c_bus_set_mode() argument
557 i3cbus->mode = mode; in i3c_bus_set_mode()
559 switch (i3cbus->mode) { in i3c_bus_set_mode()
561 if (!i3cbus->scl_rate.i3c) in i3c_bus_set_mode()
562 i3cbus->scl_rate.i3c = I3C_BUS_TYP_I3C_SCL_RATE; in i3c_bus_set_mode()
566 if (!i3cbus->scl_rate.i3c) in i3c_bus_set_mode()
567 i3cbus->scl_rate.i3c = I3C_BUS_TYP_I3C_SCL_RATE; in i3c_bus_set_mode()
568 if (!i3cbus->scl_rate.i2c) in i3c_bus_set_mode()
569 i3cbus->scl_rate.i2c = max_i2c_scl_rate; in i3c_bus_set_mode()
572 if (!i3cbus->scl_rate.i2c) in i3c_bus_set_mode()
573 i3cbus->scl_rate.i2c = max_i2c_scl_rate; in i3c_bus_set_mode()
574 if (!i3cbus->scl_rate.i3c || in i3c_bus_set_mode()
575 i3cbus->scl_rate.i3c > i3cbus->scl_rate.i2c) in i3c_bus_set_mode()
576 i3cbus->scl_rate.i3c = i3cbus->scl_rate.i2c; in i3c_bus_set_mode()
579 return -EINVAL; in i3c_bus_set_mode()
582 dev_dbg(&master->dev, "i2c-scl = %ld Hz i3c-scl = %ld Hz\n", in i3c_bus_set_mode()
583 i3cbus->scl_rate.i2c, i3cbus->scl_rate.i3c); in i3c_bus_set_mode()
586 * I3C/I2C frequency may have been overridden, check that user-provided in i3c_bus_set_mode()
589 if (i3cbus->scl_rate.i3c > I3C_BUS_MAX_I3C_SCL_RATE || in i3c_bus_set_mode()
590 i3cbus->scl_rate.i2c > I3C_BUS_I2C_FM_PLUS_SCL_RATE) in i3c_bus_set_mode()
591 return -EINVAL; in i3c_bus_set_mode()
605 return &master->i2c; in i3c_master_to_i2c_adapter()
621 return ERR_PTR(-ENOMEM); in i3c_master_alloc_i2c_dev()
623 dev->common.master = master; in i3c_master_alloc_i2c_dev()
624 dev->boardinfo = boardinfo; in i3c_master_alloc_i2c_dev()
625 dev->addr = boardinfo->base.addr; in i3c_master_alloc_i2c_dev()
626 dev->lvr = boardinfo->lvr; in i3c_master_alloc_i2c_dev()
634 dest->addr = addr; in i3c_ccc_cmd_dest_init()
635 dest->payload.len = payloadlen; in i3c_ccc_cmd_dest_init()
637 dest->payload.data = kzalloc(payloadlen, GFP_KERNEL); in i3c_ccc_cmd_dest_init()
639 dest->payload.data = NULL; in i3c_ccc_cmd_dest_init()
641 return dest->payload.data; in i3c_ccc_cmd_dest_init()
646 kfree(dest->payload.data); in i3c_ccc_cmd_dest_cleanup()
653 cmd->rnw = rnw ? 1 : 0; in i3c_ccc_cmd_init()
654 cmd->id = id; in i3c_ccc_cmd_init()
655 cmd->dests = dests; in i3c_ccc_cmd_init()
656 cmd->ndests = ndests; in i3c_ccc_cmd_init()
657 cmd->err = I3C_ERROR_UNKNOWN; in i3c_ccc_cmd_init()
666 return -EINVAL; in i3c_master_send_ccc_cmd_locked()
668 if (WARN_ON(master->init_done && in i3c_master_send_ccc_cmd_locked()
669 !rwsem_is_locked(&master->bus.lock))) in i3c_master_send_ccc_cmd_locked()
670 return -EINVAL; in i3c_master_send_ccc_cmd_locked()
672 if (!master->ops->send_ccc_cmd) in i3c_master_send_ccc_cmd_locked()
673 return -ENOTSUPP; in i3c_master_send_ccc_cmd_locked()
675 if ((cmd->id & I3C_CCC_DIRECT) && (!cmd->dests || !cmd->ndests)) in i3c_master_send_ccc_cmd_locked()
676 return -EINVAL; in i3c_master_send_ccc_cmd_locked()
678 if (master->ops->supports_ccc_cmd && in i3c_master_send_ccc_cmd_locked()
679 !master->ops->supports_ccc_cmd(master, cmd)) in i3c_master_send_ccc_cmd_locked()
680 return -ENOTSUPP; in i3c_master_send_ccc_cmd_locked()
682 ret = master->ops->send_ccc_cmd(master, cmd); in i3c_master_send_ccc_cmd_locked()
684 if (cmd->err != I3C_ERROR_UNKNOWN) in i3c_master_send_ccc_cmd_locked()
685 return cmd->err; in i3c_master_send_ccc_cmd_locked()
699 i3c_bus_for_each_i2cdev(&master->bus, dev) { in i3c_master_find_i2c_dev_by_addr()
700 if (dev->boardinfo->base.addr == addr) in i3c_master_find_i2c_dev_by_addr()
708 * i3c_master_get_free_addr() - get a free address on the bus
712 * This function must be called with the bus lock held in write mode.
714 * Return: the first free address starting at @start_addr (included) or -ENOMEM
720 return i3c_bus_get_free_addr(&master->bus, start_addr); in i3c_master_get_free_addr()
728 WARN_ON(i3cdev->desc); in i3c_device_release()
730 of_node_put(i3cdev->dev.of_node); in i3c_device_release()
747 return ERR_PTR(-ENOMEM); in i3c_master_alloc_i3c_dev()
749 dev->common.master = master; in i3c_master_alloc_i3c_dev()
750 dev->info = *info; in i3c_master_alloc_i3c_dev()
751 mutex_init(&dev->ibi_lock); in i3c_master_alloc_i3c_dev()
765 return -EINVAL; in i3c_master_rstdaa_locked()
767 addrstat = i3c_bus_get_addr_slot_status(&master->bus, addr); in i3c_master_rstdaa_locked()
769 return -EINVAL; in i3c_master_rstdaa_locked()
782 * i3c_master_entdaa_locked() - start a DAA (Dynamic Address Assignment)
789 * behind dynamic address assignment has to be handled in the I3C master
792 * This function must be called with the bus lock held in write mode.
822 return -ENOMEM; in i3c_master_enec_disec_locked()
824 events->events = evts; in i3c_master_enec_disec_locked()
837 * i3c_master_disec_locked() - send a DISEC CCC command
845 * This function must be called with the bus lock held in write mode.
858 * i3c_master_enec_locked() - send an ENEC CCC command
866 * This function must be called with the bus lock held in write mode.
879 * i3c_master_defslvs_locked() - send a DEFSLVS CCC command
888 * &i3c_master_controller_ops->bus_init().
889 * It should also be called if a master ACKed an Hot-Join request and assigned
890 * a dynamic address to the device joining the bus.
892 * This function must be called with the bus lock held in write mode.
910 return -EINVAL; in i3c_master_defslvs_locked()
916 if (i3cdev == master->this) in i3c_master_defslvs_locked()
919 if (I3C_BCR_DEVICE_ROLE(i3cdev->info.bcr) == in i3c_master_defslvs_locked()
933 ndevs - 1)); in i3c_master_defslvs_locked()
935 return -ENOMEM; in i3c_master_defslvs_locked()
937 defslvs->count = ndevs; in i3c_master_defslvs_locked()
938 defslvs->master.bcr = master->this->info.bcr; in i3c_master_defslvs_locked()
939 defslvs->master.dcr = master->this->info.dcr; in i3c_master_defslvs_locked()
940 defslvs->master.dyn_addr = master->this->info.dyn_addr << 1; in i3c_master_defslvs_locked()
941 defslvs->master.static_addr = I3C_BROADCAST_ADDR << 1; in i3c_master_defslvs_locked()
943 desc = defslvs->slaves; in i3c_master_defslvs_locked()
945 desc->lvr = i2cdev->lvr; in i3c_master_defslvs_locked()
946 desc->static_addr = i2cdev->addr << 1; in i3c_master_defslvs_locked()
952 if (i3cdev == master->this) in i3c_master_defslvs_locked()
955 desc->bcr = i3cdev->info.bcr; in i3c_master_defslvs_locked()
956 desc->dcr = i3cdev->info.dcr; in i3c_master_defslvs_locked()
957 desc->dyn_addr = i3cdev->info.dyn_addr << 1; in i3c_master_defslvs_locked()
958 desc->static_addr = i3cdev->info.static_addr << 1; in i3c_master_defslvs_locked()
979 return -EINVAL; in i3c_master_setda_locked()
983 return -ENOMEM; in i3c_master_setda_locked()
985 setda->addr = newaddr << 1; in i3c_master_setda_locked()
1015 mrl = i3c_ccc_cmd_dest_init(&dest, info->dyn_addr, sizeof(*mrl)); in i3c_master_getmrl_locked()
1017 return -ENOMEM; in i3c_master_getmrl_locked()
1023 if (!(info->bcr & I3C_BCR_IBI_PAYLOAD)) in i3c_master_getmrl_locked()
1024 dest.payload.len -= 1; in i3c_master_getmrl_locked()
1033 info->max_ibi_len = mrl->ibi_len; in i3c_master_getmrl_locked()
1036 info->max_read_len = be16_to_cpu(mrl->read_len); in i3c_master_getmrl_locked()
1039 ret = -EIO; in i3c_master_getmrl_locked()
1057 mwl = i3c_ccc_cmd_dest_init(&dest, info->dyn_addr, sizeof(*mwl)); in i3c_master_getmwl_locked()
1059 return -ENOMEM; in i3c_master_getmwl_locked()
1067 ret = -EIO; in i3c_master_getmwl_locked()
1071 info->max_write_len = be16_to_cpu(mwl->len); in i3c_master_getmwl_locked()
1087 getmaxds = i3c_ccc_cmd_dest_init(&dest, info->dyn_addr, in i3c_master_getmxds_locked()
1090 return -ENOMEM; in i3c_master_getmxds_locked()
1098 ret = -EIO; in i3c_master_getmxds_locked()
1102 info->max_read_ds = getmaxds->maxrd; in i3c_master_getmxds_locked()
1103 info->max_write_ds = getmaxds->maxwr; in i3c_master_getmxds_locked()
1105 info->max_read_turnaround = getmaxds->maxrdturn[0] | in i3c_master_getmxds_locked()
1106 ((u32)getmaxds->maxrdturn[1] << 8) | in i3c_master_getmxds_locked()
1107 ((u32)getmaxds->maxrdturn[2] << 16); in i3c_master_getmxds_locked()
1123 gethdrcap = i3c_ccc_cmd_dest_init(&dest, info->dyn_addr, in i3c_master_gethdrcap_locked()
1126 return -ENOMEM; in i3c_master_gethdrcap_locked()
1134 ret = -EIO; in i3c_master_gethdrcap_locked()
1138 info->hdr_cap = gethdrcap->modes; in i3c_master_gethdrcap_locked()
1154 getpid = i3c_ccc_cmd_dest_init(&dest, info->dyn_addr, sizeof(*getpid)); in i3c_master_getpid_locked()
1156 return -ENOMEM; in i3c_master_getpid_locked()
1163 info->pid = 0; in i3c_master_getpid_locked()
1164 for (i = 0; i < sizeof(getpid->pid); i++) { in i3c_master_getpid_locked()
1165 int sft = (sizeof(getpid->pid) - i - 1) * 8; in i3c_master_getpid_locked()
1167 info->pid |= (u64)getpid->pid[i] << sft; in i3c_master_getpid_locked()
1184 getbcr = i3c_ccc_cmd_dest_init(&dest, info->dyn_addr, sizeof(*getbcr)); in i3c_master_getbcr_locked()
1186 return -ENOMEM; in i3c_master_getbcr_locked()
1193 info->bcr = getbcr->bcr; in i3c_master_getbcr_locked()
1209 getdcr = i3c_ccc_cmd_dest_init(&dest, info->dyn_addr, sizeof(*getdcr)); in i3c_master_getdcr_locked()
1211 return -ENOMEM; in i3c_master_getdcr_locked()
1218 info->dcr = getdcr->dcr; in i3c_master_getdcr_locked()
1232 if (!dev->info.dyn_addr) in i3c_master_retrieve_dev_info()
1233 return -EINVAL; in i3c_master_retrieve_dev_info()
1235 slot_status = i3c_bus_get_addr_slot_status(&master->bus, in i3c_master_retrieve_dev_info()
1236 dev->info.dyn_addr); in i3c_master_retrieve_dev_info()
1239 return -EINVAL; in i3c_master_retrieve_dev_info()
1241 ret = i3c_master_getpid_locked(master, &dev->info); in i3c_master_retrieve_dev_info()
1245 ret = i3c_master_getbcr_locked(master, &dev->info); in i3c_master_retrieve_dev_info()
1249 ret = i3c_master_getdcr_locked(master, &dev->info); in i3c_master_retrieve_dev_info()
1253 if (dev->info.bcr & I3C_BCR_MAX_DATA_SPEED_LIM) { in i3c_master_retrieve_dev_info()
1254 ret = i3c_master_getmxds_locked(master, &dev->info); in i3c_master_retrieve_dev_info()
1259 if (dev->info.bcr & I3C_BCR_IBI_PAYLOAD) in i3c_master_retrieve_dev_info()
1260 dev->info.max_ibi_len = 1; in i3c_master_retrieve_dev_info()
1262 i3c_master_getmrl_locked(master, &dev->info); in i3c_master_retrieve_dev_info()
1263 i3c_master_getmwl_locked(master, &dev->info); in i3c_master_retrieve_dev_info()
1265 if (dev->info.bcr & I3C_BCR_HDR_CAP) { in i3c_master_retrieve_dev_info()
1266 ret = i3c_master_gethdrcap_locked(master, &dev->info); in i3c_master_retrieve_dev_info()
1278 if (dev->info.static_addr) in i3c_master_put_i3c_addrs()
1279 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_put_i3c_addrs()
1280 dev->info.static_addr, in i3c_master_put_i3c_addrs()
1283 if (dev->info.dyn_addr) in i3c_master_put_i3c_addrs()
1284 i3c_bus_set_addr_slot_status(&master->bus, dev->info.dyn_addr, in i3c_master_put_i3c_addrs()
1287 if (dev->boardinfo && dev->boardinfo->init_dyn_addr) in i3c_master_put_i3c_addrs()
1288 i3c_bus_set_addr_slot_status(&master->bus, dev->info.dyn_addr, in i3c_master_put_i3c_addrs()
1297 if (!dev->info.static_addr && !dev->info.dyn_addr) in i3c_master_get_i3c_addrs()
1300 if (dev->info.static_addr) { in i3c_master_get_i3c_addrs()
1301 status = i3c_bus_get_addr_slot_status(&master->bus, in i3c_master_get_i3c_addrs()
1302 dev->info.static_addr); in i3c_master_get_i3c_addrs()
1304 return -EBUSY; in i3c_master_get_i3c_addrs()
1306 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_get_i3c_addrs()
1307 dev->info.static_addr, in i3c_master_get_i3c_addrs()
1312 * ->init_dyn_addr should have been reserved before that, so, if we're in i3c_master_get_i3c_addrs()
1313 * trying to apply a pre-reserved dynamic address, we should not try in i3c_master_get_i3c_addrs()
1316 if (dev->info.dyn_addr && in i3c_master_get_i3c_addrs()
1317 (!dev->boardinfo || in i3c_master_get_i3c_addrs()
1318 dev->boardinfo->init_dyn_addr != dev->info.dyn_addr)) { in i3c_master_get_i3c_addrs()
1319 status = i3c_bus_get_addr_slot_status(&master->bus, in i3c_master_get_i3c_addrs()
1320 dev->info.dyn_addr); in i3c_master_get_i3c_addrs()
1324 i3c_bus_set_addr_slot_status(&master->bus, dev->info.dyn_addr, in i3c_master_get_i3c_addrs()
1331 if (dev->info.static_addr) in i3c_master_get_i3c_addrs()
1332 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_get_i3c_addrs()
1333 dev->info.static_addr, in i3c_master_get_i3c_addrs()
1336 return -EBUSY; in i3c_master_get_i3c_addrs()
1348 if (!dev->info.static_addr && !dev->info.dyn_addr) in i3c_master_attach_i3c_dev()
1356 if (master->this != dev && master->ops->attach_i3c_dev) { in i3c_master_attach_i3c_dev()
1357 ret = master->ops->attach_i3c_dev(dev); in i3c_master_attach_i3c_dev()
1364 list_add_tail(&dev->common.node, &master->bus.devs.i3c); in i3c_master_attach_i3c_dev()
1376 if (dev->info.dyn_addr != old_dyn_addr && in i3c_master_reattach_i3c_dev()
1377 (!dev->boardinfo || in i3c_master_reattach_i3c_dev()
1378 dev->info.dyn_addr != dev->boardinfo->init_dyn_addr)) { in i3c_master_reattach_i3c_dev()
1379 status = i3c_bus_get_addr_slot_status(&master->bus, in i3c_master_reattach_i3c_dev()
1380 dev->info.dyn_addr); in i3c_master_reattach_i3c_dev()
1382 return -EBUSY; in i3c_master_reattach_i3c_dev()
1383 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_reattach_i3c_dev()
1384 dev->info.dyn_addr, in i3c_master_reattach_i3c_dev()
1388 if (master->ops->reattach_i3c_dev) { in i3c_master_reattach_i3c_dev()
1389 ret = master->ops->reattach_i3c_dev(dev, old_dyn_addr); in i3c_master_reattach_i3c_dev()
1404 if (master->this != dev && master->ops->detach_i3c_dev) in i3c_master_detach_i3c_dev()
1405 master->ops->detach_i3c_dev(dev); in i3c_master_detach_i3c_dev()
1408 list_del(&dev->common.node); in i3c_master_detach_i3c_dev()
1416 if (master->ops->attach_i2c_dev) { in i3c_master_attach_i2c_dev()
1417 ret = master->ops->attach_i2c_dev(dev); in i3c_master_attach_i2c_dev()
1422 list_add_tail(&dev->common.node, &master->bus.devs.i2c); in i3c_master_attach_i2c_dev()
1431 list_del(&dev->common.node); in i3c_master_detach_i2c_dev()
1433 if (master->ops->detach_i2c_dev) in i3c_master_detach_i2c_dev()
1434 master->ops->detach_i2c_dev(dev); in i3c_master_detach_i2c_dev()
1441 .static_addr = boardinfo->static_addr, in i3c_master_early_i3c_dev_add()
1448 return -ENOMEM; in i3c_master_early_i3c_dev_add()
1450 i3cdev->boardinfo = boardinfo; in i3c_master_early_i3c_dev_add()
1456 ret = i3c_master_setdasa_locked(master, i3cdev->info.static_addr, in i3c_master_early_i3c_dev_add()
1457 i3cdev->boardinfo->init_dyn_addr); in i3c_master_early_i3c_dev_add()
1461 i3cdev->info.dyn_addr = i3cdev->boardinfo->init_dyn_addr; in i3c_master_early_i3c_dev_add()
1473 i3c_master_rstdaa_locked(master, i3cdev->boardinfo->init_dyn_addr); in i3c_master_early_i3c_dev_add()
1488 if (!master->init_done) in i3c_master_register_new_i3c_devs()
1491 i3c_bus_for_each_i3cdev(&master->bus, desc) { in i3c_master_register_new_i3c_devs()
1492 if (desc->dev || !desc->info.dyn_addr || desc == master->this) in i3c_master_register_new_i3c_devs()
1495 desc->dev = kzalloc(sizeof(*desc->dev), GFP_KERNEL); in i3c_master_register_new_i3c_devs()
1496 if (!desc->dev) in i3c_master_register_new_i3c_devs()
1499 desc->dev->bus = &master->bus; in i3c_master_register_new_i3c_devs()
1500 desc->dev->desc = desc; in i3c_master_register_new_i3c_devs()
1501 desc->dev->dev.parent = &master->dev; in i3c_master_register_new_i3c_devs()
1502 desc->dev->dev.type = &i3c_device_type; in i3c_master_register_new_i3c_devs()
1503 desc->dev->dev.bus = &i3c_bus_type; in i3c_master_register_new_i3c_devs()
1504 desc->dev->dev.release = i3c_device_release; in i3c_master_register_new_i3c_devs()
1505 dev_set_name(&desc->dev->dev, "%d-%llx", master->bus.id, in i3c_master_register_new_i3c_devs()
1506 desc->info.pid); in i3c_master_register_new_i3c_devs()
1508 if (desc->boardinfo) in i3c_master_register_new_i3c_devs()
1509 desc->dev->dev.of_node = desc->boardinfo->of_node; in i3c_master_register_new_i3c_devs()
1511 ret = device_register(&desc->dev->dev); in i3c_master_register_new_i3c_devs()
1513 dev_err(&master->dev, in i3c_master_register_new_i3c_devs()
1515 put_device(&desc->dev->dev); in i3c_master_register_new_i3c_devs()
1521 * i3c_master_do_daa() - do a DAA (Dynamic Address Assignment)
1531 * This function must be called with the bus lock held in write mode.
1539 i3c_bus_maintenance_lock(&master->bus); in i3c_master_do_daa()
1540 ret = master->ops->do_daa(master); in i3c_master_do_daa()
1541 i3c_bus_maintenance_unlock(&master->bus); in i3c_master_do_daa()
1546 i3c_bus_normaluse_lock(&master->bus); in i3c_master_do_daa()
1548 i3c_bus_normaluse_unlock(&master->bus); in i3c_master_do_daa()
1555 * i3c_master_set_info() - set master device information
1560 * &i3c_master_controller_ops->bus_init().
1565 * - &i3c_device_info->dyn_addr
1566 * - &i3c_device_info->bcr
1567 * - &i3c_device_info->dcr
1568 * - &i3c_device_info->pid
1569 * - &i3c_device_info->hdr_cap if %I3C_BCR_HDR_CAP bit is set in
1570 * &i3c_device_info->bcr
1572 * This function must be called with the bus lock held in maintenance mode.
1575 * information can be checked, but we can at least make sure @info->dyn_addr
1576 * and @info->bcr are correct), -EINVAL otherwise.
1584 if (!i3c_bus_dev_addr_is_avail(&master->bus, info->dyn_addr)) in i3c_master_set_info()
1585 return -EINVAL; in i3c_master_set_info()
1587 if (I3C_BCR_DEVICE_ROLE(info->bcr) == I3C_BCR_I3C_MASTER && in i3c_master_set_info()
1588 master->secondary) in i3c_master_set_info()
1589 return -EINVAL; in i3c_master_set_info()
1591 if (master->this) in i3c_master_set_info()
1592 return -EINVAL; in i3c_master_set_info()
1598 master->this = i3cdev; in i3c_master_set_info()
1599 master->bus.cur_master = master->this; in i3c_master_set_info()
1619 list_for_each_entry_safe(i3cdev, i3ctmp, &master->bus.devs.i3c, in i3c_master_detach_free_devs()
1623 if (i3cdev->boardinfo && i3cdev->boardinfo->init_dyn_addr) in i3c_master_detach_free_devs()
1624 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_detach_free_devs()
1625 i3cdev->boardinfo->init_dyn_addr, in i3c_master_detach_free_devs()
1631 list_for_each_entry_safe(i2cdev, i2ctmp, &master->bus.devs.i2c, in i3c_master_detach_free_devs()
1634 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_detach_free_devs()
1635 i2cdev->addr, in i3c_master_detach_free_devs()
1642 * i3c_master_bus_init() - initialize an I3C bus
1651 * 2. Call &i3c_master_controller_ops->bus_init() method to initialize
1652 * the master controller. That's usually where the bus mode is selected
1655 * 3. Instruct all devices on the bus to drop their dynamic address. This is
1662 * also have static_addr, try to pre-assign dynamic addresses requested by
1666 * 6. Do a DAA (Dynamic Address Assignment) to assign dynamic addresses to all
1685 list_for_each_entry(i2cboardinfo, &master->boardinfo.i2c, node) { in i3c_master_bus_init()
1686 status = i3c_bus_get_addr_slot_status(&master->bus, in i3c_master_bus_init()
1687 i2cboardinfo->base.addr); in i3c_master_bus_init()
1689 ret = -EBUSY; in i3c_master_bus_init()
1693 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_bus_init()
1694 i2cboardinfo->base.addr, in i3c_master_bus_init()
1711 * Now execute the controller specific ->bus_init() routine, which in i3c_master_bus_init()
1714 ret = master->ops->bus_init(master); in i3c_master_bus_init()
1719 * The master device should have been instantiated in ->bus_init(), in i3c_master_bus_init()
1722 if (!master->this) { in i3c_master_bus_init()
1723 dev_err(&master->dev, in i3c_master_bus_init()
1724 "master_set_info() was not called in ->bus_init()\n"); in i3c_master_bus_init()
1725 ret = -EINVAL; in i3c_master_bus_init()
1730 * Reset all dynamic address that may have been assigned before in i3c_master_bus_init()
1745 * Reserve init_dyn_addr first, and then try to pre-assign dynamic in i3c_master_bus_init()
1747 * In case pre-assign dynamic address fails, setting dynamic address to in i3c_master_bus_init()
1751 list_for_each_entry(i3cboardinfo, &master->boardinfo.i3c, node) { in i3c_master_bus_init()
1754 * We don't reserve a dynamic address for devices that in i3c_master_bus_init()
1757 if (!i3cboardinfo->init_dyn_addr) in i3c_master_bus_init()
1760 ret = i3c_bus_get_addr_slot_status(&master->bus, in i3c_master_bus_init()
1761 i3cboardinfo->init_dyn_addr); in i3c_master_bus_init()
1763 ret = -EBUSY; in i3c_master_bus_init()
1767 i3c_bus_set_addr_slot_status(&master->bus, in i3c_master_bus_init()
1768 i3cboardinfo->init_dyn_addr, in i3c_master_bus_init()
1774 * DAA happens, and the requested dynamic address will in i3c_master_bus_init()
1779 if (i3cboardinfo->static_addr) in i3c_master_bus_init()
1793 if (master->ops->bus_cleanup) in i3c_master_bus_init()
1794 master->ops->bus_cleanup(master); in i3c_master_bus_init()
1804 if (master->ops->bus_cleanup) in i3c_master_bus_cleanup()
1805 master->ops->bus_cleanup(master); in i3c_master_bus_cleanup()
1812 struct i3c_master_controller *master = i3cdev->common.master; in i3c_master_attach_boardinfo()
1815 list_for_each_entry(i3cboardinfo, &master->boardinfo.i3c, node) { in i3c_master_attach_boardinfo()
1816 if (i3cdev->info.pid != i3cboardinfo->pid) in i3c_master_attach_boardinfo()
1819 i3cdev->boardinfo = i3cboardinfo; in i3c_master_attach_boardinfo()
1820 i3cdev->info.static_addr = i3cboardinfo->static_addr; in i3c_master_attach_boardinfo()
1831 i3c_bus_for_each_i3cdev(&master->bus, i3cdev) { in i3c_master_search_i3c_dev_duplicate()
1832 if (i3cdev != refdev && i3cdev->info.pid == refdev->info.pid) in i3c_master_search_i3c_dev_duplicate()
1840 * i3c_master_add_i3c_dev_locked() - add an I3C slave to the bus
1842 * @addr: I3C slave dynamic address assigned to the device
1851 * This function must be called with the bus lock held in write mode.
1866 return -EINVAL; in i3c_master_add_i3c_dev_locked()
1884 newdev->dev = olddev->dev; in i3c_master_add_i3c_dev_locked()
1885 if (newdev->dev) in i3c_master_add_i3c_dev_locked()
1886 newdev->dev->desc = newdev; in i3c_master_add_i3c_dev_locked()
1894 mutex_lock(&olddev->ibi_lock); in i3c_master_add_i3c_dev_locked()
1895 if (olddev->ibi) { in i3c_master_add_i3c_dev_locked()
1896 ibireq.handler = olddev->ibi->handler; in i3c_master_add_i3c_dev_locked()
1897 ibireq.max_payload_len = olddev->ibi->max_payload_len; in i3c_master_add_i3c_dev_locked()
1898 ibireq.num_slots = olddev->ibi->num_slots; in i3c_master_add_i3c_dev_locked()
1900 if (olddev->ibi->enabled) { in i3c_master_add_i3c_dev_locked()
1907 mutex_unlock(&olddev->ibi_lock); in i3c_master_add_i3c_dev_locked()
1909 old_dyn_addr = olddev->info.dyn_addr; in i3c_master_add_i3c_dev_locked()
1920 * Depending on our previous state, the expected dynamic address might in i3c_master_add_i3c_dev_locked()
1922 * - if the device already had a dynamic address assigned, let's try to in i3c_master_add_i3c_dev_locked()
1923 * re-apply this one in i3c_master_add_i3c_dev_locked()
1924 * - if the device did not have a dynamic address and the firmware in i3c_master_add_i3c_dev_locked()
1926 * - in any other case, keep the address automatically assigned by the in i3c_master_add_i3c_dev_locked()
1929 if (old_dyn_addr && old_dyn_addr != newdev->info.dyn_addr) in i3c_master_add_i3c_dev_locked()
1931 else if (newdev->boardinfo && newdev->boardinfo->init_dyn_addr) in i3c_master_add_i3c_dev_locked()
1932 expected_dyn_addr = newdev->boardinfo->init_dyn_addr; in i3c_master_add_i3c_dev_locked()
1934 expected_dyn_addr = newdev->info.dyn_addr; in i3c_master_add_i3c_dev_locked()
1936 if (newdev->info.dyn_addr != expected_dyn_addr) { in i3c_master_add_i3c_dev_locked()
1938 * Try to apply the expected dynamic address. If it fails, keep in i3c_master_add_i3c_dev_locked()
1942 newdev->info.dyn_addr, in i3c_master_add_i3c_dev_locked()
1945 old_dyn_addr = newdev->info.dyn_addr; in i3c_master_add_i3c_dev_locked()
1946 newdev->info.dyn_addr = expected_dyn_addr; in i3c_master_add_i3c_dev_locked()
1949 dev_err(&master->dev, in i3c_master_add_i3c_dev_locked()
1951 master->bus.id, newdev->info.pid); in i3c_master_add_i3c_dev_locked()
1963 mutex_lock(&newdev->ibi_lock); in i3c_master_add_i3c_dev_locked()
1966 dev_err(&master->dev, in i3c_master_add_i3c_dev_locked()
1967 "Failed to request IBI on device %d-%llx", in i3c_master_add_i3c_dev_locked()
1968 master->bus.id, newdev->info.pid); in i3c_master_add_i3c_dev_locked()
1972 dev_err(&master->dev, in i3c_master_add_i3c_dev_locked()
1973 "Failed to re-enable IBI on device %d-%llx", in i3c_master_add_i3c_dev_locked()
1974 master->bus.id, newdev->info.pid); in i3c_master_add_i3c_dev_locked()
1976 mutex_unlock(&newdev->ibi_lock); in i3c_master_add_i3c_dev_locked()
1982 if (newdev->dev && newdev->dev->desc) in i3c_master_add_i3c_dev_locked()
1983 newdev->dev->desc = NULL; in i3c_master_add_i3c_dev_locked()
2001 struct device *dev = &master->dev; in of_i3c_master_add_i2c_boardinfo()
2006 return -ENOMEM; in of_i3c_master_add_i2c_boardinfo()
2008 ret = of_i2c_get_board_info(dev, node, &boardinfo->base); in of_i3c_master_add_i2c_boardinfo()
2013 * The I3C Specification does not clearly say I2C devices with 10-bit in of_i3c_master_add_i2c_boardinfo()
2017 if (boardinfo->base.flags & I2C_CLIENT_TEN) { in of_i3c_master_add_i2c_boardinfo()
2019 return -ENOTSUPP; in of_i3c_master_add_i2c_boardinfo()
2023 boardinfo->lvr = reg[2]; in of_i3c_master_add_i2c_boardinfo()
2025 list_add_tail(&boardinfo->node, &master->boardinfo.i2c); in of_i3c_master_add_i2c_boardinfo()
2036 struct device *dev = &master->dev; in of_i3c_master_add_i3c_boardinfo()
2042 return -ENOMEM; in of_i3c_master_add_i3c_boardinfo()
2046 return -EINVAL; in of_i3c_master_add_i3c_boardinfo()
2048 addrstatus = i3c_bus_get_addr_slot_status(&master->bus, in of_i3c_master_add_i3c_boardinfo()
2051 return -EINVAL; in of_i3c_master_add_i3c_boardinfo()
2054 boardinfo->static_addr = reg[0]; in of_i3c_master_add_i3c_boardinfo()
2056 if (!of_property_read_u32(node, "assigned-address", &init_dyn_addr)) { in of_i3c_master_add_i3c_boardinfo()
2058 return -EINVAL; in of_i3c_master_add_i3c_boardinfo()
2060 addrstatus = i3c_bus_get_addr_slot_status(&master->bus, in of_i3c_master_add_i3c_boardinfo()
2063 return -EINVAL; in of_i3c_master_add_i3c_boardinfo()
2066 boardinfo->pid = ((u64)reg[1] << 32) | reg[2]; in of_i3c_master_add_i3c_boardinfo()
2068 if ((boardinfo->pid & GENMASK_ULL(63, 48)) || in of_i3c_master_add_i3c_boardinfo()
2069 I3C_PID_RND_LOWER_32BITS(boardinfo->pid)) in of_i3c_master_add_i3c_boardinfo()
2070 return -EINVAL; in of_i3c_master_add_i3c_boardinfo()
2072 boardinfo->init_dyn_addr = init_dyn_addr; in of_i3c_master_add_i3c_boardinfo()
2073 boardinfo->of_node = of_node_get(node); in of_i3c_master_add_i3c_boardinfo()
2074 list_add_tail(&boardinfo->node, &master->boardinfo.i3c); in of_i3c_master_add_i3c_boardinfo()
2086 return -EINVAL; in of_i3c_master_add_dev()
2106 struct device *dev = &master->dev; in of_populate_i3c_bus()
2107 struct device_node *i3cbus_np = dev->of_node; in of_populate_i3c_bus()
2128 if (!of_property_read_u32(i3cbus_np, "i2c-scl-hz", &val)) in of_populate_i3c_bus()
2129 master->bus.scl_rate.i2c = val; in of_populate_i3c_bus()
2131 if (!of_property_read_u32(i3cbus_np, "i3c-scl-hz", &val)) in of_populate_i3c_bus()
2132 master->bus.scl_rate.i3c = val; in of_populate_i3c_bus()
2146 return -EINVAL; in i3c_master_i2c_adapter_xfer()
2148 if (!master->ops->i2c_xfers) in i3c_master_i2c_adapter_xfer()
2149 return -ENOTSUPP; in i3c_master_i2c_adapter_xfer()
2155 return -ENOTSUPP; in i3c_master_i2c_adapter_xfer()
2158 i3c_bus_normaluse_lock(&master->bus); in i3c_master_i2c_adapter_xfer()
2161 ret = -ENOENT; in i3c_master_i2c_adapter_xfer()
2163 ret = master->ops->i2c_xfers(dev, xfers, nxfers); in i3c_master_i2c_adapter_xfer()
2164 i3c_bus_normaluse_unlock(&master->bus); in i3c_master_i2c_adapter_xfer()
2185 adap->dev.parent = master->dev.parent; in i3c_master_i2c_adapter_init()
2186 adap->owner = master->dev.parent->driver->owner; in i3c_master_i2c_adapter_init()
2187 adap->algo = &i3c_master_i2c_algo; in i3c_master_i2c_adapter_init()
2188 strncpy(adap->name, dev_name(master->dev.parent), sizeof(adap->name)); in i3c_master_i2c_adapter_init()
2191 adap->timeout = 1000; in i3c_master_i2c_adapter_init()
2192 adap->retries = 3; in i3c_master_i2c_adapter_init()
2202 i3c_bus_for_each_i2cdev(&master->bus, i2cdev) in i3c_master_i2c_adapter_init()
2203 i2cdev->dev = i2c_new_client_device(adap, &i2cdev->boardinfo->base); in i3c_master_i2c_adapter_init()
2212 i2c_del_adapter(&master->i2c); in i3c_master_i2c_adapter_cleanup()
2214 i3c_bus_for_each_i2cdev(&master->bus, i2cdev) in i3c_master_i2c_adapter_cleanup()
2215 i2cdev->dev = NULL; in i3c_master_i2c_adapter_cleanup()
2222 i3c_bus_for_each_i3cdev(&master->bus, i3cdev) { in i3c_master_unregister_i3c_devs()
2223 if (!i3cdev->dev) in i3c_master_unregister_i3c_devs()
2226 i3cdev->dev->desc = NULL; in i3c_master_unregister_i3c_devs()
2227 if (device_is_registered(&i3cdev->dev->dev)) in i3c_master_unregister_i3c_devs()
2228 device_unregister(&i3cdev->dev->dev); in i3c_master_unregister_i3c_devs()
2230 put_device(&i3cdev->dev->dev); in i3c_master_unregister_i3c_devs()
2231 i3cdev->dev = NULL; in i3c_master_unregister_i3c_devs()
2236 * i3c_master_queue_ibi() - Queue an IBI
2245 atomic_inc(&dev->ibi->pending_ibis); in i3c_master_queue_ibi()
2246 queue_work(dev->common.master->wq, &slot->work); in i3c_master_queue_ibi()
2254 struct i3c_dev_desc *dev = slot->dev; in i3c_master_handle_ibi()
2258 payload.data = slot->data; in i3c_master_handle_ibi()
2259 payload.len = slot->len; in i3c_master_handle_ibi()
2261 if (dev->dev) in i3c_master_handle_ibi()
2262 dev->ibi->handler(dev->dev, &payload); in i3c_master_handle_ibi()
2264 master->ops->recycle_ibi_slot(dev, slot); in i3c_master_handle_ibi()
2265 if (atomic_dec_and_test(&dev->ibi->pending_ibis)) in i3c_master_handle_ibi()
2266 complete(&dev->ibi->all_ibis_handled); in i3c_master_handle_ibi()
2272 slot->dev = dev; in i3c_master_init_ibi_slot()
2273 INIT_WORK(&slot->work, i3c_master_handle_ibi); in i3c_master_init_ibi_slot()
2291 * i3c_generic_ibi_free_pool() - Free a generic IBI pool
2301 while (!list_empty(&pool->free_slots)) { in i3c_generic_ibi_free_pool()
2302 slot = list_first_entry(&pool->free_slots, in i3c_generic_ibi_free_pool()
2304 list_del(&slot->node); in i3c_generic_ibi_free_pool()
2312 WARN_ON(nslots != pool->num_slots); in i3c_generic_ibi_free_pool()
2314 kfree(pool->payload_buf); in i3c_generic_ibi_free_pool()
2315 kfree(pool->slots); in i3c_generic_ibi_free_pool()
2321 * i3c_generic_ibi_alloc_pool() - Create a generic IBI pool
2340 return ERR_PTR(-ENOMEM); in i3c_generic_ibi_alloc_pool()
2342 spin_lock_init(&pool->lock); in i3c_generic_ibi_alloc_pool()
2343 INIT_LIST_HEAD(&pool->free_slots); in i3c_generic_ibi_alloc_pool()
2344 INIT_LIST_HEAD(&pool->pending); in i3c_generic_ibi_alloc_pool()
2346 pool->slots = kcalloc(req->num_slots, sizeof(*slot), GFP_KERNEL); in i3c_generic_ibi_alloc_pool()
2347 if (!pool->slots) { in i3c_generic_ibi_alloc_pool()
2348 ret = -ENOMEM; in i3c_generic_ibi_alloc_pool()
2352 if (req->max_payload_len) { in i3c_generic_ibi_alloc_pool()
2353 pool->payload_buf = kcalloc(req->num_slots, in i3c_generic_ibi_alloc_pool()
2354 req->max_payload_len, GFP_KERNEL); in i3c_generic_ibi_alloc_pool()
2355 if (!pool->payload_buf) { in i3c_generic_ibi_alloc_pool()
2356 ret = -ENOMEM; in i3c_generic_ibi_alloc_pool()
2361 for (i = 0; i < req->num_slots; i++) { in i3c_generic_ibi_alloc_pool()
2362 slot = &pool->slots[i]; in i3c_generic_ibi_alloc_pool()
2363 i3c_master_init_ibi_slot(dev, &slot->base); in i3c_generic_ibi_alloc_pool()
2365 if (req->max_payload_len) in i3c_generic_ibi_alloc_pool()
2366 slot->base.data = pool->payload_buf + in i3c_generic_ibi_alloc_pool()
2367 (i * req->max_payload_len); in i3c_generic_ibi_alloc_pool()
2369 list_add_tail(&slot->node, &pool->free_slots); in i3c_generic_ibi_alloc_pool()
2370 pool->num_slots++; in i3c_generic_ibi_alloc_pool()
2382 * i3c_generic_ibi_get_free_slot() - Get a free slot from a generic IBI pool
2397 spin_lock_irqsave(&pool->lock, flags); in i3c_generic_ibi_get_free_slot()
2398 slot = list_first_entry_or_null(&pool->free_slots, in i3c_generic_ibi_get_free_slot()
2401 list_del(&slot->node); in i3c_generic_ibi_get_free_slot()
2402 spin_unlock_irqrestore(&pool->lock, flags); in i3c_generic_ibi_get_free_slot()
2404 return slot ? &slot->base : NULL; in i3c_generic_ibi_get_free_slot()
2409 * i3c_generic_ibi_recycle_slot() - Return a slot to a generic IBI pool
2414 * master driver struct_master_controller_ops->recycle_ibi() method.
2426 spin_lock_irqsave(&pool->lock, flags); in i3c_generic_ibi_recycle_slot()
2427 list_add_tail(&slot->node, &pool->free_slots); in i3c_generic_ibi_recycle_slot()
2428 spin_unlock_irqrestore(&pool->lock, flags); in i3c_generic_ibi_recycle_slot()
2434 if (!ops || !ops->bus_init || !ops->priv_xfers || in i3c_master_check_ops()
2435 !ops->send_ccc_cmd || !ops->do_daa || !ops->i2c_xfers) in i3c_master_check_ops()
2436 return -EINVAL; in i3c_master_check_ops()
2438 if (ops->request_ibi && in i3c_master_check_ops()
2439 (!ops->enable_ibi || !ops->disable_ibi || !ops->free_ibi || in i3c_master_check_ops()
2440 !ops->recycle_ibi_slot)) in i3c_master_check_ops()
2441 return -EINVAL; in i3c_master_check_ops()
2447 * i3c_master_register() - register an I3C master
2453 * -ENOTSUPP if set to true since secondary masters are not yet
2458 * - creates and initializes the I3C bus
2459 * - populates the bus with static I2C devs if @parent->of_node is not
2461 * - registers all I3C devices added by the controller during bus
2463 * - registers the I2C adapter and all I2C devices
2474 enum i3c_bus_mode mode = I3C_BUS_MODE_PURE; in i3c_master_register() local
2480 return -ENOTSUPP; in i3c_master_register()
2486 master->dev.parent = parent; in i3c_master_register()
2487 master->dev.of_node = of_node_get(parent->of_node); in i3c_master_register()
2488 master->dev.bus = &i3c_bus_type; in i3c_master_register()
2489 master->dev.type = &i3c_masterdev_type; in i3c_master_register()
2490 master->dev.release = i3c_masterdev_release; in i3c_master_register()
2491 master->ops = ops; in i3c_master_register()
2492 master->secondary = secondary; in i3c_master_register()
2493 INIT_LIST_HEAD(&master->boardinfo.i2c); in i3c_master_register()
2494 INIT_LIST_HEAD(&master->boardinfo.i3c); in i3c_master_register()
2500 device_initialize(&master->dev); in i3c_master_register()
2501 dev_set_name(&master->dev, "i3c-%d", i3cbus->id); in i3c_master_register()
2507 list_for_each_entry(i2cbi, &master->boardinfo.i2c, node) { in i3c_master_register()
2508 switch (i2cbi->lvr & I3C_LVR_I2C_INDEX_MASK) { in i3c_master_register()
2510 if (mode < I3C_BUS_MODE_MIXED_FAST) in i3c_master_register()
2511 mode = I3C_BUS_MODE_MIXED_FAST; in i3c_master_register()
2514 if (mode < I3C_BUS_MODE_MIXED_LIMITED) in i3c_master_register()
2515 mode = I3C_BUS_MODE_MIXED_LIMITED; in i3c_master_register()
2518 if (mode < I3C_BUS_MODE_MIXED_SLOW) in i3c_master_register()
2519 mode = I3C_BUS_MODE_MIXED_SLOW; in i3c_master_register()
2522 ret = -EINVAL; in i3c_master_register()
2526 if (i2cbi->lvr & I3C_LVR_I2C_FM_MODE) in i3c_master_register()
2530 ret = i3c_bus_set_mode(i3cbus, mode, i2c_scl_rate); in i3c_master_register()
2534 master->wq = alloc_workqueue("%s", 0, 0, dev_name(parent)); in i3c_master_register()
2535 if (!master->wq) { in i3c_master_register()
2536 ret = -ENOMEM; in i3c_master_register()
2544 ret = device_add(&master->dev); in i3c_master_register()
2560 master->init_done = true; in i3c_master_register()
2561 i3c_bus_normaluse_lock(&master->bus); in i3c_master_register()
2563 i3c_bus_normaluse_unlock(&master->bus); in i3c_master_register()
2568 device_del(&master->dev); in i3c_master_register()
2574 put_device(&master->dev); in i3c_master_register()
2581 * i3c_master_unregister() - unregister an I3C master
2593 device_unregister(&master->dev); in i3c_master_unregister()
2606 return -ENOENT; in i3c_dev_do_priv_xfers_locked()
2610 return -EINVAL; in i3c_dev_do_priv_xfers_locked()
2612 if (!master->ops->priv_xfers) in i3c_dev_do_priv_xfers_locked()
2613 return -ENOTSUPP; in i3c_dev_do_priv_xfers_locked()
2615 return master->ops->priv_xfers(dev, xfers, nxfers); in i3c_dev_do_priv_xfers_locked()
2623 if (!dev->ibi) in i3c_dev_disable_ibi_locked()
2624 return -EINVAL; in i3c_dev_disable_ibi_locked()
2627 ret = master->ops->disable_ibi(dev); in i3c_dev_disable_ibi_locked()
2631 reinit_completion(&dev->ibi->all_ibis_handled); in i3c_dev_disable_ibi_locked()
2632 if (atomic_read(&dev->ibi->pending_ibis)) in i3c_dev_disable_ibi_locked()
2633 wait_for_completion(&dev->ibi->all_ibis_handled); in i3c_dev_disable_ibi_locked()
2635 dev->ibi->enabled = false; in i3c_dev_disable_ibi_locked()
2645 if (!dev->ibi) in i3c_dev_enable_ibi_locked()
2646 return -EINVAL; in i3c_dev_enable_ibi_locked()
2648 ret = master->ops->enable_ibi(dev); in i3c_dev_enable_ibi_locked()
2650 dev->ibi->enabled = true; in i3c_dev_enable_ibi_locked()
2662 if (!master->ops->request_ibi) in i3c_dev_request_ibi_locked()
2663 return -ENOTSUPP; in i3c_dev_request_ibi_locked()
2665 if (dev->ibi) in i3c_dev_request_ibi_locked()
2666 return -EBUSY; in i3c_dev_request_ibi_locked()
2670 return -ENOMEM; in i3c_dev_request_ibi_locked()
2672 atomic_set(&ibi->pending_ibis, 0); in i3c_dev_request_ibi_locked()
2673 init_completion(&ibi->all_ibis_handled); in i3c_dev_request_ibi_locked()
2674 ibi->handler = req->handler; in i3c_dev_request_ibi_locked()
2675 ibi->max_payload_len = req->max_payload_len; in i3c_dev_request_ibi_locked()
2676 ibi->num_slots = req->num_slots; in i3c_dev_request_ibi_locked()
2678 dev->ibi = ibi; in i3c_dev_request_ibi_locked()
2679 ret = master->ops->request_ibi(dev, req); in i3c_dev_request_ibi_locked()
2682 dev->ibi = NULL; in i3c_dev_request_ibi_locked()
2692 if (!dev->ibi) in i3c_dev_free_ibi_locked()
2695 if (WARN_ON(dev->ibi->enabled)) in i3c_dev_free_ibi_locked()
2698 master->ops->free_ibi(dev); in i3c_dev_free_ibi_locked()
2699 kfree(dev->ibi); in i3c_dev_free_ibi_locked()
2700 dev->ibi = NULL; in i3c_dev_free_ibi_locked()