Lines Matching +full:x +full:- +full:rc
1 // SPDX-License-Identifier: GPL-2.0-only
8 * - Rework topology
9 * - s/chip_id/chip_loc
10 * - s/cfam/chip (cfam_id -> chip_id etc...)
25 #include "fsi-master.h"
120 * FSI endpoint-device support
137 if (addr > dev->size || size > dev->size || addr > dev->size - size) in fsi_device_read()
138 return -EINVAL; in fsi_device_read()
140 return fsi_slave_read(dev->slave, dev->addr + addr, val, size); in fsi_device_read()
147 if (addr > dev->size || size > dev->size || addr > dev->size - size) in fsi_device_write()
148 return -EINVAL; in fsi_device_write()
150 return fsi_slave_write(dev->slave, dev->addr + addr, val, size); in fsi_device_write()
156 uint32_t addr = FSI_PEEK_BASE + ((dev->unit - 2) * sizeof(uint32_t)); in fsi_device_peek()
158 return fsi_slave_read(dev->slave, addr, val, sizeof(uint32_t)); in fsi_device_peek()
165 of_node_put(device->dev.of_node); in fsi_device_release()
177 dev->dev.parent = &slave->dev; in fsi_create_device()
178 dev->dev.bus = &fsi_bus_type; in fsi_create_device()
179 dev->dev.release = fsi_device_release; in fsi_create_device()
191 if (addr > slave->size) in fsi_slave_calc_addr()
192 return -EINVAL; in fsi_slave_calc_addr()
198 if (slave->id != 0) in fsi_slave_calc_addr()
199 return -EINVAL; in fsi_slave_calc_addr()
211 struct fsi_master *master = slave->master; in fsi_slave_report_and_clear_errors()
213 int rc, link; in fsi_slave_report_and_clear_errors() local
216 link = slave->link; in fsi_slave_report_and_clear_errors()
217 id = slave->id; in fsi_slave_report_and_clear_errors()
219 rc = fsi_master_read(master, link, id, FSI_SLAVE_BASE + FSI_SISC, in fsi_slave_report_and_clear_errors()
221 if (rc) in fsi_slave_report_and_clear_errors()
222 return rc; in fsi_slave_report_and_clear_errors()
224 rc = fsi_master_read(master, link, id, FSI_SLAVE_BASE + FSI_SSTAT, in fsi_slave_report_and_clear_errors()
226 if (rc) in fsi_slave_report_and_clear_errors()
227 return rc; in fsi_slave_report_and_clear_errors()
229 dev_dbg(&slave->dev, "status: 0x%08x, sisc: 0x%08x\n", in fsi_slave_report_and_clear_errors()
238 static inline uint32_t fsi_smode_echodly(int x) in fsi_smode_echodly() argument
240 return (x & FSI_SMODE_ED_MASK) << FSI_SMODE_ED_SHIFT; in fsi_smode_echodly()
244 static inline uint32_t fsi_smode_senddly(int x) in fsi_smode_senddly() argument
246 return (x & FSI_SMODE_SD_MASK) << FSI_SMODE_SD_SHIFT; in fsi_smode_senddly()
250 static inline uint32_t fsi_smode_lbcrr(int x) in fsi_smode_lbcrr() argument
252 return (x & FSI_SMODE_LBCRR_MASK) << FSI_SMODE_LBCRR_SHIFT; in fsi_smode_lbcrr()
256 static inline uint32_t fsi_smode_sid(int x) in fsi_smode_sid() argument
258 return (x & FSI_SMODE_SID_MASK) << FSI_SMODE_SID_SHIFT; in fsi_smode_sid()
265 | fsi_smode_echodly(t_echodly - 1) | fsi_smode_senddly(t_senddly - 1) in fsi_slave_smode()
277 smode = fsi_slave_smode(slave->id, slave->t_send_delay, slave->t_echo_delay); in fsi_slave_set_smode()
280 return fsi_master_write(slave->master, slave->link, slave->id, in fsi_slave_set_smode()
288 struct fsi_master *master = slave->master; in fsi_slave_handle_error()
289 int rc, link; in fsi_slave_handle_error() local
294 return -1; in fsi_slave_handle_error()
296 link = slave->link; in fsi_slave_handle_error()
297 id = slave->id; in fsi_slave_handle_error()
299 dev_dbg(&slave->dev, "handling error on %s to 0x%08x[%zd]", in fsi_slave_handle_error()
305 rc = fsi_slave_report_and_clear_errors(slave); in fsi_slave_handle_error()
306 if (!rc) in fsi_slave_handle_error()
310 if (master->term) { in fsi_slave_handle_error()
311 rc = master->term(master, link, id); in fsi_slave_handle_error()
312 if (!rc) { in fsi_slave_handle_error()
313 rc = fsi_master_read(master, link, id, 0, in fsi_slave_handle_error()
315 if (!rc) in fsi_slave_handle_error()
316 rc = fsi_slave_report_and_clear_errors(slave); in fsi_slave_handle_error()
317 if (!rc) in fsi_slave_handle_error()
322 send_delay = slave->t_send_delay; in fsi_slave_handle_error()
323 echo_delay = slave->t_echo_delay; in fsi_slave_handle_error()
326 rc = fsi_master_break(master, link); in fsi_slave_handle_error()
327 if (rc) in fsi_slave_handle_error()
328 return rc; in fsi_slave_handle_error()
330 slave->t_send_delay = send_delay; in fsi_slave_handle_error()
331 slave->t_echo_delay = echo_delay; in fsi_slave_handle_error()
333 rc = fsi_slave_set_smode(slave); in fsi_slave_handle_error()
334 if (rc) in fsi_slave_handle_error()
335 return rc; in fsi_slave_handle_error()
337 if (master->link_config) in fsi_slave_handle_error()
338 master->link_config(master, link, in fsi_slave_handle_error()
339 slave->t_send_delay, in fsi_slave_handle_error()
340 slave->t_echo_delay); in fsi_slave_handle_error()
348 uint8_t id = slave->id; in fsi_slave_read()
349 int rc, err_rc, i; in fsi_slave_read() local
351 rc = fsi_slave_calc_addr(slave, &addr, &id); in fsi_slave_read()
352 if (rc) in fsi_slave_read()
353 return rc; in fsi_slave_read()
356 rc = fsi_master_read(slave->master, slave->link, in fsi_slave_read()
358 if (!rc) in fsi_slave_read()
366 return rc; in fsi_slave_read()
373 uint8_t id = slave->id; in fsi_slave_write()
374 int rc, err_rc, i; in fsi_slave_write() local
376 rc = fsi_slave_calc_addr(slave, &addr, &id); in fsi_slave_write()
377 if (rc) in fsi_slave_write()
378 return rc; in fsi_slave_write()
381 rc = fsi_master_write(slave->master, slave->link, in fsi_slave_write()
383 if (!rc) in fsi_slave_write()
391 return rc; in fsi_slave_write()
399 return -EINVAL; in fsi_slave_claim_range()
401 if (addr + size > slave->size) in fsi_slave_claim_range()
402 return -EINVAL; in fsi_slave_claim_range()
438 "node %s matches probed address, but not size (got 0x%x, expected 0x%x)", in fsi_device_node_matches()
453 parent = dev_of_node(&dev->slave->dev); in fsi_device_find_of_node()
458 if (fsi_device_node_matches(&dev->dev, np, in fsi_device_find_of_node()
459 dev->addr, dev->size)) in fsi_device_find_of_node()
469 int rc, i; in fsi_slave_scan() local
485 rc = fsi_slave_read(slave, (i + 1) * sizeof(data), in fsi_slave_scan()
487 if (rc) { in fsi_slave_scan()
488 dev_warn(&slave->dev, in fsi_slave_scan()
490 return -1; in fsi_slave_scan()
496 dev_warn(&slave->dev, in fsi_slave_scan()
497 "crc error in slave register at 0x%04x\n", in fsi_slave_scan()
499 return -1; in fsi_slave_scan()
518 return -ENOMEM; in fsi_slave_scan()
520 dev->slave = slave; in fsi_slave_scan()
521 dev->engine_type = type; in fsi_slave_scan()
522 dev->version = version; in fsi_slave_scan()
523 dev->unit = i; in fsi_slave_scan()
524 dev->addr = engine_addr; in fsi_slave_scan()
525 dev->size = slots * engine_page_size; in fsi_slave_scan()
527 dev_dbg(&slave->dev, in fsi_slave_scan()
528 "engine[%i]: type %x, version %x, addr %x size %x\n", in fsi_slave_scan()
529 dev->unit, dev->engine_type, version, in fsi_slave_scan()
530 dev->addr, dev->size); in fsi_slave_scan()
532 dev_set_name(&dev->dev, "%02x:%02x:%02x:%02x", in fsi_slave_scan()
533 slave->master->idx, slave->link, in fsi_slave_scan()
534 slave->id, i - 2); in fsi_slave_scan()
535 dev->dev.of_node = fsi_device_find_of_node(dev); in fsi_slave_scan()
537 rc = device_register(&dev->dev); in fsi_slave_scan()
538 if (rc) { in fsi_slave_scan()
539 dev_warn(&slave->dev, "add failed: %d\n", rc); in fsi_slave_scan()
540 put_device(&dev->dev); in fsi_slave_scan()
560 * width or the highest power-of-two factor of offset in aligned_access_size()
572 count_unit = BIT(8 * sizeof(unsigned long) - 1 - __builtin_clzl(count)); in aligned_access_size()
584 int rc; in fsi_slave_sysfs_raw_read() local
587 return -EINVAL; in fsi_slave_sysfs_raw_read()
590 return -EINVAL; in fsi_slave_sysfs_raw_read()
593 read_len = aligned_access_size(off, count - total_len); in fsi_slave_sysfs_raw_read()
595 rc = fsi_slave_read(slave, off, buf + total_len, read_len); in fsi_slave_sysfs_raw_read()
596 if (rc) in fsi_slave_sysfs_raw_read()
597 return rc; in fsi_slave_sysfs_raw_read()
611 int rc; in fsi_slave_sysfs_raw_write() local
614 return -EINVAL; in fsi_slave_sysfs_raw_write()
617 return -EINVAL; in fsi_slave_sysfs_raw_write()
620 write_len = aligned_access_size(off, count - total_len); in fsi_slave_sysfs_raw_write()
622 rc = fsi_slave_write(slave, off, buf + total_len, write_len); in fsi_slave_sysfs_raw_write()
623 if (rc) in fsi_slave_sysfs_raw_write()
624 return rc; in fsi_slave_sysfs_raw_write()
646 fsi_free_minor(slave->dev.devt); in fsi_slave_release()
647 of_node_put(dev->of_node); in fsi_slave_release()
682 parent = dev_of_node(&master->dev); in fsi_slave_find_of_node()
697 struct fsi_slave *slave = filep->private_data; in cfam_read()
700 ssize_t rc; in cfam_read() local
703 return -EINVAL; in cfam_read()
706 return -EINVAL; in cfam_read()
712 read_len -= off & 0x3; in cfam_read()
714 rc = fsi_slave_read(slave, off, &data, read_len); in cfam_read()
715 if (rc) in cfam_read()
717 rc = copy_to_user(buf + total_len, &data, read_len); in cfam_read()
718 if (rc) { in cfam_read()
719 rc = -EFAULT; in cfam_read()
724 rc = count; in cfam_read()
727 return rc; in cfam_read()
733 struct fsi_slave *slave = filep->private_data; in cfam_write()
736 ssize_t rc; in cfam_write() local
740 return -EINVAL; in cfam_write()
743 return -EINVAL; in cfam_write()
749 write_len -= off & 0x3; in cfam_write()
751 rc = copy_from_user(&data, buf + total_len, write_len); in cfam_write()
752 if (rc) { in cfam_write()
753 rc = -EFAULT; in cfam_write()
756 rc = fsi_slave_write(slave, off, &data, write_len); in cfam_write()
757 if (rc) in cfam_write()
761 rc = count; in cfam_write()
764 return rc; in cfam_write()
773 file->f_pos = offset; in cfam_llseek()
776 return -EINVAL; in cfam_llseek()
784 struct fsi_slave *slave = container_of(inode->i_cdev, struct fsi_slave, cdev); in cfam_open()
786 file->private_data = slave; in cfam_open()
804 struct fsi_master *master = slave->master; in send_term_store()
806 if (!master->term) in send_term_store()
807 return -ENODEV; in send_term_store()
809 master->term(master, slave->link, slave->id); in send_term_store()
821 return sprintf(buf, "%u\n", slave->t_send_delay); in slave_send_echo_show()
828 struct fsi_master *master = slave->master; in slave_send_echo_store()
830 int rc; in slave_send_echo_store() local
833 return -EINVAL; in slave_send_echo_store()
836 return -EINVAL; in slave_send_echo_store()
838 if (!master->link_config) in slave_send_echo_store()
839 return -ENXIO; in slave_send_echo_store()
842 slave->t_send_delay = val; in slave_send_echo_store()
843 slave->t_echo_delay = val; in slave_send_echo_store()
845 rc = fsi_slave_set_smode(slave); in slave_send_echo_store()
846 if (rc < 0) in slave_send_echo_store()
847 return rc; in slave_send_echo_store()
848 if (master->link_config) in slave_send_echo_store()
849 master->link_config(master, slave->link, in slave_send_echo_store()
850 slave->t_send_delay, in slave_send_echo_store()
851 slave->t_echo_delay); in slave_send_echo_store()
865 return sprintf(buf, "%d\n", slave->chip_id); in chip_id_show()
876 return sprintf(buf, "0x%x\n", slave->cfam_id); in cfam_id_show()
904 return kasprintf(GFP_KERNEL, "fsi/cfam%d", slave->cdev_idx); in cfam_devnode()
906 return kasprintf(GFP_KERNEL, "cfam%d", slave->cdev_idx); in cfam_devnode()
927 .name = "fsi-cdev",
945 int cid = slave->chip_id; in __fsi_get_new_minor()
959 if (id != -ENOSPC) in __fsi_get_new_minor()
961 /* Fallback to non-legacy allocation */ in __fsi_get_new_minor()
975 return __fsi_get_new_minor(fdev->slave, type, out_dev, out_index); in fsi_get_new_minor()
991 int rc; in fsi_slave_init() local
994 * full 23-bit address range in fsi_slave_init()
997 return -EINVAL; in fsi_slave_init()
999 rc = fsi_master_read(master, link, id, 0, &data, sizeof(data)); in fsi_slave_init()
1000 if (rc) { in fsi_slave_init()
1001 dev_dbg(&master->dev, "can't read slave %02x:%02x %d\n", in fsi_slave_init()
1002 link, id, rc); in fsi_slave_init()
1003 return -ENODEV; in fsi_slave_init()
1009 dev_warn(&master->dev, "slave %02x:%02x invalid cfam id CRC!\n", in fsi_slave_init()
1011 return -EIO; in fsi_slave_init()
1014 dev_dbg(&master->dev, "fsi: found chip %08x at %02x:%02x:%02x\n", in fsi_slave_init()
1015 cfam_id, master->idx, link, id); in fsi_slave_init()
1017 /* If we're behind a master that doesn't provide a self-running bus in fsi_slave_init()
1020 if (master->flags & FSI_MASTER_FLAG_SWCLOCK) { in fsi_slave_init()
1022 rc = fsi_master_write(master, link, id, in fsi_slave_init()
1025 if (rc) in fsi_slave_init()
1026 dev_warn(&master->dev, in fsi_slave_init()
1027 "can't set llmode on slave:%02x:%02x %d\n", in fsi_slave_init()
1028 link, id, rc); in fsi_slave_init()
1036 return -ENOMEM; in fsi_slave_init()
1038 dev_set_name(&slave->dev, "slave@%02x:%02x", link, id); in fsi_slave_init()
1039 slave->dev.type = &cfam_type; in fsi_slave_init()
1040 slave->dev.parent = &master->dev; in fsi_slave_init()
1041 slave->dev.of_node = fsi_slave_find_of_node(master, link, id); in fsi_slave_init()
1042 slave->dev.release = fsi_slave_release; in fsi_slave_init()
1043 device_initialize(&slave->dev); in fsi_slave_init()
1044 slave->cfam_id = cfam_id; in fsi_slave_init()
1045 slave->master = master; in fsi_slave_init()
1046 slave->link = link; in fsi_slave_init()
1047 slave->id = id; in fsi_slave_init()
1048 slave->size = FSI_SLAVE_SIZE_23b; in fsi_slave_init()
1049 slave->t_send_delay = 16; in fsi_slave_init()
1050 slave->t_echo_delay = 16; in fsi_slave_init()
1053 slave->chip_id = -1; in fsi_slave_init()
1054 if (slave->dev.of_node) { in fsi_slave_init()
1056 if (!of_property_read_u32(slave->dev.of_node, "chip-id", &prop)) in fsi_slave_init()
1057 slave->chip_id = prop; in fsi_slave_init()
1062 rc = fsi_master_write(master, link, id, FSI_SLAVE_BASE + FSI_SLBUS, in fsi_slave_init()
1064 if (rc) in fsi_slave_init()
1065 dev_warn(&master->dev, in fsi_slave_init()
1066 "can't set slbus on slave:%02x:%02x %d\n", link, id, in fsi_slave_init()
1067 rc); in fsi_slave_init()
1069 rc = fsi_slave_set_smode(slave); in fsi_slave_init()
1070 if (rc) { in fsi_slave_init()
1071 dev_warn(&master->dev, in fsi_slave_init()
1072 "can't set smode on slave:%02x:%02x %d\n", in fsi_slave_init()
1073 link, id, rc); in fsi_slave_init()
1078 rc = __fsi_get_new_minor(slave, fsi_dev_cfam, &slave->dev.devt, in fsi_slave_init()
1079 &slave->cdev_idx); in fsi_slave_init()
1080 if (rc) in fsi_slave_init()
1084 cdev_init(&slave->cdev, &cfam_fops); in fsi_slave_init()
1085 rc = cdev_device_add(&slave->cdev, &slave->dev); in fsi_slave_init()
1086 if (rc) { in fsi_slave_init()
1087 dev_err(&slave->dev, "Error %d creating slave device\n", rc); in fsi_slave_init()
1096 if (master->link_config) in fsi_slave_init()
1097 master->link_config(master, link, in fsi_slave_init()
1098 slave->t_send_delay, in fsi_slave_init()
1099 slave->t_echo_delay); in fsi_slave_init()
1101 /* Legacy raw file -> to be removed */ in fsi_slave_init()
1102 rc = device_create_bin_file(&slave->dev, &fsi_slave_raw_attr); in fsi_slave_init()
1103 if (rc) in fsi_slave_init()
1104 dev_warn(&slave->dev, "failed to create raw attr: %d\n", rc); in fsi_slave_init()
1107 rc = fsi_slave_scan(slave); in fsi_slave_init()
1108 if (rc) in fsi_slave_init()
1109 dev_dbg(&master->dev, "failed during slave scan with: %d\n", in fsi_slave_init()
1110 rc); in fsi_slave_init()
1115 fsi_free_minor(slave->dev.devt); in fsi_slave_init()
1117 of_node_put(slave->dev.of_node); in fsi_slave_init()
1119 return rc; in fsi_slave_init()
1127 return -EINVAL; in fsi_check_access()
1130 return -EINVAL; in fsi_check_access()
1132 return -EINVAL; in fsi_check_access()
1140 int rc; in fsi_master_read() local
1144 rc = fsi_check_access(addr, size); in fsi_master_read()
1145 if (!rc) in fsi_master_read()
1146 rc = master->read(master, link, slave_id, addr, val, size); in fsi_master_read()
1149 false, val, rc); in fsi_master_read()
1151 return rc; in fsi_master_read()
1157 int rc; in fsi_master_write() local
1161 rc = fsi_check_access(addr, size); in fsi_master_write()
1162 if (!rc) in fsi_master_write()
1163 rc = master->write(master, link, slave_id, addr, val, size); in fsi_master_write()
1166 true, val, rc); in fsi_master_write()
1168 return rc; in fsi_master_write()
1173 if (master->link_enable) in fsi_master_link_disable()
1174 return master->link_enable(master, link, false); in fsi_master_link_disable()
1181 if (master->link_enable) in fsi_master_link_enable()
1182 return master->link_enable(master, link, true); in fsi_master_link_enable()
1192 int rc = 0; in fsi_master_break() local
1196 if (master->send_break) in fsi_master_break()
1197 rc = master->send_break(master, link); in fsi_master_break()
1198 if (master->link_config) in fsi_master_break()
1199 master->link_config(master, link, 16, 16); in fsi_master_break()
1201 return rc; in fsi_master_break()
1206 int link, rc; in fsi_master_scan() local
1208 for (link = 0; link < master->n_links; link++) { in fsi_master_scan()
1209 rc = fsi_master_link_enable(master, link); in fsi_master_scan()
1210 if (rc) { in fsi_master_scan()
1211 dev_dbg(&master->dev, in fsi_master_scan()
1212 "enable link %d failed: %d\n", link, rc); in fsi_master_scan()
1215 rc = fsi_master_break(master, link); in fsi_master_scan()
1216 if (rc) { in fsi_master_scan()
1218 dev_dbg(&master->dev, in fsi_master_scan()
1219 "break to link %d failed: %d\n", link, rc); in fsi_master_scan()
1223 rc = fsi_slave_init(master, link, 0); in fsi_master_scan()
1224 if (rc) in fsi_master_scan()
1242 cdev_device_del(&slave->cdev, &slave->dev); in fsi_master_remove_slave()
1249 device_for_each_child(&master->dev, NULL, fsi_master_remove_slave); in fsi_master_unscan()
1254 int rc; in fsi_master_rescan() local
1256 mutex_lock(&master->scan_lock); in fsi_master_rescan()
1258 rc = fsi_master_scan(master); in fsi_master_rescan()
1259 mutex_unlock(&master->scan_lock); in fsi_master_rescan()
1261 return rc; in fsi_master_rescan()
1269 int rc; in master_rescan_store() local
1271 rc = fsi_master_rescan(master); in master_rescan_store()
1272 if (rc < 0) in master_rescan_store()
1273 return rc; in master_rescan_store()
1301 .name = "fsi-master",
1307 int rc; in fsi_master_register() local
1310 mutex_init(&master->scan_lock); in fsi_master_register()
1311 master->idx = ida_simple_get(&master_ida, 0, INT_MAX, GFP_KERNEL); in fsi_master_register()
1312 dev_set_name(&master->dev, "fsi%d", master->idx); in fsi_master_register()
1313 master->dev.class = &fsi_master_class; in fsi_master_register()
1315 rc = device_register(&master->dev); in fsi_master_register()
1316 if (rc) { in fsi_master_register()
1317 ida_simple_remove(&master_ida, master->idx); in fsi_master_register()
1318 return rc; in fsi_master_register()
1321 np = dev_of_node(&master->dev); in fsi_master_register()
1322 if (!of_property_read_bool(np, "no-scan-on-init")) { in fsi_master_register()
1323 mutex_lock(&master->scan_lock); in fsi_master_register()
1325 mutex_unlock(&master->scan_lock); in fsi_master_register()
1334 if (master->idx >= 0) { in fsi_master_unregister()
1335 ida_simple_remove(&master_ida, master->idx); in fsi_master_unregister()
1336 master->idx = -1; in fsi_master_unregister()
1339 mutex_lock(&master->scan_lock); in fsi_master_unregister()
1341 mutex_unlock(&master->scan_lock); in fsi_master_unregister()
1342 device_unregister(&master->dev); in fsi_master_unregister()
1354 if (!fsi_drv->id_table) in fsi_bus_match()
1357 for (id = fsi_drv->id_table; id->engine_type; id++) { in fsi_bus_match()
1358 if (id->engine_type != fsi_dev->engine_type) in fsi_bus_match()
1360 if (id->version == FSI_VERSION_ANY || in fsi_bus_match()
1361 id->version == fsi_dev->version) in fsi_bus_match()
1371 return -EINVAL; in fsi_driver_register()
1372 if (!fsi_drv->id_table) in fsi_driver_register()
1373 return -EINVAL; in fsi_driver_register()
1375 return driver_register(&fsi_drv->drv); in fsi_driver_register()
1381 driver_unregister(&fsi_drv->drv); in fsi_driver_unregister()
1393 int rc; in fsi_init() local
1395 rc = alloc_chrdev_region(&fsi_base_dev, 0, FSI_CHAR_MAX_DEVICES, "fsi"); in fsi_init()
1396 if (rc) in fsi_init()
1397 return rc; in fsi_init()
1398 rc = bus_register(&fsi_bus_type); in fsi_init()
1399 if (rc) in fsi_init()
1402 rc = class_register(&fsi_master_class); in fsi_init()
1403 if (rc) in fsi_init()
1412 return rc; in fsi_init()