Lines Matching refs:nvmem
56 struct nvmem_device *nvmem; member
71 static int __nvmem_reg_read(struct nvmem_device *nvmem, unsigned int offset, in __nvmem_reg_read() argument
74 if (nvmem->reg_read) in __nvmem_reg_read()
75 return nvmem->reg_read(nvmem->priv, offset, val, bytes); in __nvmem_reg_read()
80 static int __nvmem_reg_write(struct nvmem_device *nvmem, unsigned int offset, in __nvmem_reg_write() argument
85 if (nvmem->reg_write) { in __nvmem_reg_write()
86 gpiod_set_value_cansleep(nvmem->wp_gpio, 0); in __nvmem_reg_write()
87 ret = nvmem->reg_write(nvmem->priv, offset, val, bytes); in __nvmem_reg_write()
88 gpiod_set_value_cansleep(nvmem->wp_gpio, 1); in __nvmem_reg_write()
95 static int nvmem_access_with_keepouts(struct nvmem_device *nvmem, in nvmem_access_with_keepouts() argument
102 const struct nvmem_keepout *keepout = nvmem->keepout; in nvmem_access_with_keepouts()
103 const struct nvmem_keepout *keepoutend = keepout + nvmem->nkeepout; in nvmem_access_with_keepouts()
119 rc = __nvmem_reg_write(nvmem, offset, val, ksize); in nvmem_access_with_keepouts()
121 rc = __nvmem_reg_read(nvmem, offset, val, ksize); in nvmem_access_with_keepouts()
151 return __nvmem_reg_write(nvmem, offset, val, ksize); in nvmem_access_with_keepouts()
153 return __nvmem_reg_read(nvmem, offset, val, ksize); in nvmem_access_with_keepouts()
159 static int nvmem_reg_read(struct nvmem_device *nvmem, unsigned int offset, in nvmem_reg_read() argument
162 if (!nvmem->nkeepout) in nvmem_reg_read()
163 return __nvmem_reg_read(nvmem, offset, val, bytes); in nvmem_reg_read()
165 return nvmem_access_with_keepouts(nvmem, offset, val, bytes, false); in nvmem_reg_read()
168 static int nvmem_reg_write(struct nvmem_device *nvmem, unsigned int offset, in nvmem_reg_write() argument
171 if (!nvmem->nkeepout) in nvmem_reg_write()
172 return __nvmem_reg_write(nvmem, offset, val, bytes); in nvmem_reg_write()
174 return nvmem_access_with_keepouts(nvmem, offset, val, bytes, true); in nvmem_reg_write()
193 struct nvmem_device *nvmem = to_nvmem_device(dev); in type_show() local
195 return sprintf(buf, "%s\n", nvmem_type_str[nvmem->type]); in type_show()
210 struct nvmem_device *nvmem; in bin_attr_nvmem_read() local
217 nvmem = to_nvmem_device(dev); in bin_attr_nvmem_read()
220 if (pos >= nvmem->size) in bin_attr_nvmem_read()
223 if (!IS_ALIGNED(pos, nvmem->stride)) in bin_attr_nvmem_read()
226 if (count < nvmem->word_size) in bin_attr_nvmem_read()
229 if (pos + count > nvmem->size) in bin_attr_nvmem_read()
230 count = nvmem->size - pos; in bin_attr_nvmem_read()
232 count = round_down(count, nvmem->word_size); in bin_attr_nvmem_read()
234 if (!nvmem->reg_read) in bin_attr_nvmem_read()
237 rc = nvmem_reg_read(nvmem, pos, buf, count); in bin_attr_nvmem_read()
250 struct nvmem_device *nvmem; in bin_attr_nvmem_write() local
257 nvmem = to_nvmem_device(dev); in bin_attr_nvmem_write()
260 if (pos >= nvmem->size) in bin_attr_nvmem_write()
263 if (!IS_ALIGNED(pos, nvmem->stride)) in bin_attr_nvmem_write()
266 if (count < nvmem->word_size) in bin_attr_nvmem_write()
269 if (pos + count > nvmem->size) in bin_attr_nvmem_write()
270 count = nvmem->size - pos; in bin_attr_nvmem_write()
272 count = round_down(count, nvmem->word_size); in bin_attr_nvmem_write()
274 if (!nvmem->reg_write) in bin_attr_nvmem_write()
277 rc = nvmem_reg_write(nvmem, pos, buf, count); in bin_attr_nvmem_write()
285 static umode_t nvmem_bin_attr_get_umode(struct nvmem_device *nvmem) in nvmem_bin_attr_get_umode() argument
289 if (!nvmem->root_only) in nvmem_bin_attr_get_umode()
292 if (!nvmem->read_only) in nvmem_bin_attr_get_umode()
295 if (!nvmem->reg_write) in nvmem_bin_attr_get_umode()
298 if (!nvmem->reg_read) in nvmem_bin_attr_get_umode()
308 struct nvmem_device *nvmem = to_nvmem_device(dev); in nvmem_bin_attr_is_visible() local
310 return nvmem_bin_attr_get_umode(nvmem); in nvmem_bin_attr_is_visible()
352 static int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem, in nvmem_sysfs_setup_compat() argument
366 nvmem->eeprom = bin_attr_nvmem_eeprom_compat; in nvmem_sysfs_setup_compat()
367 nvmem->eeprom.attr.mode = nvmem_bin_attr_get_umode(nvmem); in nvmem_sysfs_setup_compat()
368 nvmem->eeprom.size = nvmem->size; in nvmem_sysfs_setup_compat()
370 nvmem->eeprom.attr.key = &eeprom_lock_key; in nvmem_sysfs_setup_compat()
372 nvmem->eeprom.private = &nvmem->dev; in nvmem_sysfs_setup_compat()
373 nvmem->base_dev = config->base_dev; in nvmem_sysfs_setup_compat()
375 rval = device_create_bin_file(nvmem->base_dev, &nvmem->eeprom); in nvmem_sysfs_setup_compat()
377 dev_err(&nvmem->dev, in nvmem_sysfs_setup_compat()
382 nvmem->flags |= FLAG_COMPAT; in nvmem_sysfs_setup_compat()
387 static void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem, in nvmem_sysfs_remove_compat() argument
391 device_remove_bin_file(nvmem->base_dev, &nvmem->eeprom); in nvmem_sysfs_remove_compat()
396 static int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem, in nvmem_sysfs_setup_compat() argument
401 static void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem, in nvmem_sysfs_remove_compat() argument
410 struct nvmem_device *nvmem = to_nvmem_device(dev); in nvmem_release() local
412 ida_free(&nvmem_ida, nvmem->id); in nvmem_release()
413 gpiod_put(nvmem->wp_gpio); in nvmem_release()
414 kfree(nvmem); in nvmem_release()
436 static void nvmem_device_remove_all_cells(const struct nvmem_device *nvmem) in nvmem_device_remove_all_cells() argument
440 list_for_each_entry_safe(cell, p, &nvmem->cells, node) in nvmem_device_remove_all_cells()
447 list_add_tail(&cell->node, &cell->nvmem->cells); in nvmem_cell_add()
452 static int nvmem_cell_info_to_nvmem_cell_nodup(struct nvmem_device *nvmem, in nvmem_cell_info_to_nvmem_cell_nodup() argument
456 cell->nvmem = nvmem; in nvmem_cell_info_to_nvmem_cell_nodup()
468 if (!IS_ALIGNED(cell->offset, nvmem->stride)) { in nvmem_cell_info_to_nvmem_cell_nodup()
469 dev_err(&nvmem->dev, in nvmem_cell_info_to_nvmem_cell_nodup()
471 cell->name ?: "<unknown>", nvmem->stride); in nvmem_cell_info_to_nvmem_cell_nodup()
478 static int nvmem_cell_info_to_nvmem_cell(struct nvmem_device *nvmem, in nvmem_cell_info_to_nvmem_cell() argument
484 err = nvmem_cell_info_to_nvmem_cell_nodup(nvmem, info, cell); in nvmem_cell_info_to_nvmem_cell()
504 static int nvmem_add_cells(struct nvmem_device *nvmem, in nvmem_add_cells() argument
522 rval = nvmem_cell_info_to_nvmem_cell(nvmem, &info[i], cells[i]); in nvmem_add_cells()
570 static int nvmem_add_cells_from_table(struct nvmem_device *nvmem) in nvmem_add_cells_from_table() argument
579 if (strcmp(nvmem_dev_name(nvmem), table->nvmem_name) == 0) { in nvmem_add_cells_from_table()
589 rval = nvmem_cell_info_to_nvmem_cell(nvmem, in nvmem_add_cells_from_table()
608 nvmem_find_cell_by_name(struct nvmem_device *nvmem, const char *cell_id) in nvmem_find_cell_by_name() argument
613 list_for_each_entry(iter, &nvmem->cells, node) { in nvmem_find_cell_by_name()
624 static int nvmem_validate_keepouts(struct nvmem_device *nvmem) in nvmem_validate_keepouts() argument
627 const struct nvmem_keepout *keepout = nvmem->keepout; in nvmem_validate_keepouts()
628 const struct nvmem_keepout *keepoutend = keepout + nvmem->nkeepout; in nvmem_validate_keepouts()
633 dev_err(&nvmem->dev, in nvmem_validate_keepouts()
640 dev_err(&nvmem->dev, in nvmem_validate_keepouts()
650 if ((keepout->end - keepout->start < nvmem->word_size) || in nvmem_validate_keepouts()
652 (keepout->start - cur < nvmem->word_size))) { in nvmem_validate_keepouts()
654 dev_err(&nvmem->dev, in nvmem_validate_keepouts()
661 if (!IS_ALIGNED(keepout->start, nvmem->stride) || in nvmem_validate_keepouts()
662 !IS_ALIGNED(keepout->end, nvmem->stride)) { in nvmem_validate_keepouts()
664 dev_err(&nvmem->dev, in nvmem_validate_keepouts()
677 static int nvmem_add_cells_from_of(struct nvmem_device *nvmem) in nvmem_add_cells_from_of() argument
680 struct device *dev = &nvmem->dev; in nvmem_add_cells_from_of()
703 cell->nvmem = nvmem; in nvmem_add_cells_from_of()
719 if (!IS_ALIGNED(cell->offset, nvmem->stride)) { in nvmem_add_cells_from_of()
721 cell->name, nvmem->stride); in nvmem_add_cells_from_of()
748 struct nvmem_device *nvmem; in nvmem_register() local
757 nvmem = kzalloc(sizeof(*nvmem), GFP_KERNEL); in nvmem_register()
758 if (!nvmem) in nvmem_register()
763 kfree(nvmem); in nvmem_register()
768 nvmem->wp_gpio = config->wp_gpio; in nvmem_register()
770 nvmem->wp_gpio = gpiod_get_optional(config->dev, "wp", in nvmem_register()
772 if (IS_ERR(nvmem->wp_gpio)) { in nvmem_register()
773 ida_free(&nvmem_ida, nvmem->id); in nvmem_register()
774 rval = PTR_ERR(nvmem->wp_gpio); in nvmem_register()
775 kfree(nvmem); in nvmem_register()
779 kref_init(&nvmem->refcnt); in nvmem_register()
780 INIT_LIST_HEAD(&nvmem->cells); in nvmem_register()
782 nvmem->id = rval; in nvmem_register()
783 nvmem->owner = config->owner; in nvmem_register()
784 if (!nvmem->owner && config->dev->driver) in nvmem_register()
785 nvmem->owner = config->dev->driver->owner; in nvmem_register()
786 nvmem->stride = config->stride ?: 1; in nvmem_register()
787 nvmem->word_size = config->word_size ?: 1; in nvmem_register()
788 nvmem->size = config->size; in nvmem_register()
789 nvmem->dev.type = &nvmem_provider_type; in nvmem_register()
790 nvmem->dev.bus = &nvmem_bus_type; in nvmem_register()
791 nvmem->dev.parent = config->dev; in nvmem_register()
792 nvmem->root_only = config->root_only; in nvmem_register()
793 nvmem->priv = config->priv; in nvmem_register()
794 nvmem->type = config->type; in nvmem_register()
795 nvmem->reg_read = config->reg_read; in nvmem_register()
796 nvmem->reg_write = config->reg_write; in nvmem_register()
797 nvmem->keepout = config->keepout; in nvmem_register()
798 nvmem->nkeepout = config->nkeepout; in nvmem_register()
800 nvmem->dev.of_node = config->of_node; in nvmem_register()
802 nvmem->dev.of_node = config->dev->of_node; in nvmem_register()
806 dev_set_name(&nvmem->dev, "%s", config->name); in nvmem_register()
809 dev_set_name(&nvmem->dev, "%s%d", config->name, nvmem->id); in nvmem_register()
812 dev_set_name(&nvmem->dev, "%s%d", in nvmem_register()
814 config->name ? config->id : nvmem->id); in nvmem_register()
818 nvmem->read_only = device_property_present(config->dev, "read-only") || in nvmem_register()
819 config->read_only || !nvmem->reg_write; in nvmem_register()
822 nvmem->dev.groups = nvmem_dev_groups; in nvmem_register()
825 if (nvmem->nkeepout) { in nvmem_register()
826 rval = nvmem_validate_keepouts(nvmem); in nvmem_register()
828 ida_free(&nvmem_ida, nvmem->id); in nvmem_register()
829 kfree(nvmem); in nvmem_register()
834 dev_dbg(&nvmem->dev, "Registering nvmem device %s\n", config->name); in nvmem_register()
836 rval = device_register(&nvmem->dev); in nvmem_register()
841 rval = nvmem_sysfs_setup_compat(nvmem, config); in nvmem_register()
847 rval = nvmem_add_cells(nvmem, config->cells, config->ncells); in nvmem_register()
852 rval = nvmem_add_cells_from_table(nvmem); in nvmem_register()
856 rval = nvmem_add_cells_from_of(nvmem); in nvmem_register()
860 blocking_notifier_call_chain(&nvmem_notifier, NVMEM_ADD, nvmem); in nvmem_register()
862 return nvmem; in nvmem_register()
865 nvmem_device_remove_all_cells(nvmem); in nvmem_register()
868 nvmem_sysfs_remove_compat(nvmem, config); in nvmem_register()
870 device_del(&nvmem->dev); in nvmem_register()
872 put_device(&nvmem->dev); in nvmem_register()
880 struct nvmem_device *nvmem; in nvmem_device_release() local
882 nvmem = container_of(kref, struct nvmem_device, refcnt); in nvmem_device_release()
884 blocking_notifier_call_chain(&nvmem_notifier, NVMEM_REMOVE, nvmem); in nvmem_device_release()
886 if (nvmem->flags & FLAG_COMPAT) in nvmem_device_release()
887 device_remove_bin_file(nvmem->base_dev, &nvmem->eeprom); in nvmem_device_release()
889 nvmem_device_remove_all_cells(nvmem); in nvmem_device_release()
890 device_unregister(&nvmem->dev); in nvmem_device_release()
898 void nvmem_unregister(struct nvmem_device *nvmem) in nvmem_unregister() argument
900 kref_put(&nvmem->refcnt, nvmem_device_release); in nvmem_unregister()
923 struct nvmem_device **ptr, *nvmem; in devm_nvmem_register() local
929 nvmem = nvmem_register(config); in devm_nvmem_register()
931 if (!IS_ERR(nvmem)) { in devm_nvmem_register()
932 *ptr = nvmem; in devm_nvmem_register()
938 return nvmem; in devm_nvmem_register()
958 int devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem) in devm_nvmem_unregister() argument
960 return devres_release(dev, devm_nvmem_release, devm_nvmem_match, nvmem); in devm_nvmem_unregister()
967 struct nvmem_device *nvmem = NULL; in __nvmem_device_get() local
973 nvmem = to_nvmem_device(dev); in __nvmem_device_get()
975 if (!nvmem) in __nvmem_device_get()
978 if (!try_module_get(nvmem->owner)) { in __nvmem_device_get()
979 dev_err(&nvmem->dev, in __nvmem_device_get()
981 nvmem_dev_name(nvmem)); in __nvmem_device_get()
983 put_device(&nvmem->dev); in __nvmem_device_get()
987 kref_get(&nvmem->refcnt); in __nvmem_device_get()
989 return nvmem; in __nvmem_device_get()
992 static void __nvmem_device_put(struct nvmem_device *nvmem) in __nvmem_device_put() argument
994 put_device(&nvmem->dev); in __nvmem_device_put()
995 module_put(nvmem->owner); in __nvmem_device_put()
996 kref_put(&nvmem->refcnt, nvmem_device_release); in __nvmem_device_put()
1013 struct nvmem_device *nvmem; in of_nvmem_device_get() local
1023 nvmem = __nvmem_device_get(nvmem_np, device_match_of_node); in of_nvmem_device_get()
1025 return nvmem; in of_nvmem_device_get()
1042 struct nvmem_device *nvmem; in nvmem_device_get() local
1044 nvmem = of_nvmem_device_get(dev->of_node, dev_name); in nvmem_device_get()
1046 if (!IS_ERR(nvmem) || PTR_ERR(nvmem) == -EPROBE_DEFER) in nvmem_device_get()
1047 return nvmem; in nvmem_device_get()
1073 struct nvmem_device **nvmem = res; in devm_nvmem_device_match() local
1075 if (WARN_ON(!nvmem || !*nvmem)) in devm_nvmem_device_match()
1078 return *nvmem == data; in devm_nvmem_device_match()
1093 void devm_nvmem_device_put(struct device *dev, struct nvmem_device *nvmem) in devm_nvmem_device_put() argument
1098 devm_nvmem_device_match, nvmem); in devm_nvmem_device_put()
1109 void nvmem_device_put(struct nvmem_device *nvmem) in nvmem_device_put() argument
1111 __nvmem_device_put(nvmem); in nvmem_device_put()
1127 struct nvmem_device **ptr, *nvmem; in devm_nvmem_device_get() local
1133 nvmem = nvmem_device_get(dev, id); in devm_nvmem_device_get()
1134 if (!IS_ERR(nvmem)) { in devm_nvmem_device_get()
1135 *ptr = nvmem; in devm_nvmem_device_get()
1141 return nvmem; in devm_nvmem_device_get()
1150 struct nvmem_device *nvmem; in nvmem_cell_get_from_lookup() local
1164 nvmem = __nvmem_device_get((void *)lookup->nvmem_name, in nvmem_cell_get_from_lookup()
1166 if (IS_ERR(nvmem)) { in nvmem_cell_get_from_lookup()
1168 cell = ERR_CAST(nvmem); in nvmem_cell_get_from_lookup()
1172 cell = nvmem_find_cell_by_name(nvmem, in nvmem_cell_get_from_lookup()
1175 __nvmem_device_put(nvmem); in nvmem_cell_get_from_lookup()
1188 nvmem_find_cell_by_node(struct nvmem_device *nvmem, struct device_node *np) in nvmem_find_cell_by_node() argument
1193 list_for_each_entry(iter, &nvmem->cells, node) { in nvmem_find_cell_by_node()
1219 struct nvmem_device *nvmem; in of_nvmem_cell_get() local
1235 nvmem = __nvmem_device_get(nvmem_np, device_match_of_node); in of_nvmem_cell_get()
1237 if (IS_ERR(nvmem)) in of_nvmem_cell_get()
1238 return ERR_CAST(nvmem); in of_nvmem_cell_get()
1240 cell = nvmem_find_cell_by_node(nvmem, cell_np); in of_nvmem_cell_get()
1242 __nvmem_device_put(nvmem); in of_nvmem_cell_get()
1351 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_put() local
1353 __nvmem_device_put(nvmem); in nvmem_cell_put()
1390 static int __nvmem_cell_read(struct nvmem_device *nvmem, in __nvmem_cell_read() argument
1396 rc = nvmem_reg_read(nvmem, cell->offset, buf, cell->bytes); in __nvmem_cell_read()
1423 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_read() local
1427 if (!nvmem) in nvmem_cell_read()
1434 rc = __nvmem_cell_read(nvmem, cell, buf, len); in nvmem_cell_read()
1447 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_prepare_write_buffer() local
1464 rc = nvmem_reg_read(nvmem, cell->offset, &v, 1); in nvmem_cell_prepare_write_buffer()
1483 rc = nvmem_reg_read(nvmem, in nvmem_cell_prepare_write_buffer()
1508 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_write() local
1511 if (!nvmem || nvmem->read_only || in nvmem_cell_write()
1521 rc = nvmem_reg_write(nvmem, cell->offset, buf, cell->bytes); in nvmem_cell_write()
1727 ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, in nvmem_device_cell_read() argument
1734 if (!nvmem) in nvmem_device_cell_read()
1737 rc = nvmem_cell_info_to_nvmem_cell_nodup(nvmem, info, &cell); in nvmem_device_cell_read()
1741 rc = __nvmem_cell_read(nvmem, &cell, buf, &len); in nvmem_device_cell_read()
1758 int nvmem_device_cell_write(struct nvmem_device *nvmem, in nvmem_device_cell_write() argument
1764 if (!nvmem) in nvmem_device_cell_write()
1767 rc = nvmem_cell_info_to_nvmem_cell_nodup(nvmem, info, &cell); in nvmem_device_cell_write()
1786 int nvmem_device_read(struct nvmem_device *nvmem, in nvmem_device_read() argument
1792 if (!nvmem) in nvmem_device_read()
1795 rc = nvmem_reg_read(nvmem, offset, buf, bytes); in nvmem_device_read()
1814 int nvmem_device_write(struct nvmem_device *nvmem, in nvmem_device_write() argument
1820 if (!nvmem) in nvmem_device_write()
1823 rc = nvmem_reg_write(nvmem, offset, buf, bytes); in nvmem_device_write()
1901 const char *nvmem_dev_name(struct nvmem_device *nvmem) in nvmem_dev_name() argument
1903 return dev_name(&nvmem->dev); in nvmem_dev_name()