Lines Matching full:cell
337 static void nvmem_cell_drop(struct nvmem_cell *cell) in nvmem_cell_drop() argument
339 blocking_notifier_call_chain(&nvmem_notifier, NVMEM_CELL_REMOVE, cell); in nvmem_cell_drop()
341 list_del(&cell->node); in nvmem_cell_drop()
343 of_node_put(cell->np); in nvmem_cell_drop()
344 kfree_const(cell->name); in nvmem_cell_drop()
345 kfree(cell); in nvmem_cell_drop()
350 struct nvmem_cell *cell, *p; in nvmem_device_remove_all_cells() local
352 list_for_each_entry_safe(cell, p, &nvmem->cells, node) in nvmem_device_remove_all_cells()
353 nvmem_cell_drop(cell); in nvmem_device_remove_all_cells()
356 static void nvmem_cell_add(struct nvmem_cell *cell) in nvmem_cell_add() argument
359 list_add_tail(&cell->node, &cell->nvmem->cells); in nvmem_cell_add()
361 blocking_notifier_call_chain(&nvmem_notifier, NVMEM_CELL_ADD, cell); in nvmem_cell_add()
366 struct nvmem_cell *cell) in nvmem_cell_info_to_nvmem_cell_nodup() argument
368 cell->nvmem = nvmem; in nvmem_cell_info_to_nvmem_cell_nodup()
369 cell->offset = info->offset; in nvmem_cell_info_to_nvmem_cell_nodup()
370 cell->bytes = info->bytes; in nvmem_cell_info_to_nvmem_cell_nodup()
371 cell->name = info->name; in nvmem_cell_info_to_nvmem_cell_nodup()
373 cell->bit_offset = info->bit_offset; in nvmem_cell_info_to_nvmem_cell_nodup()
374 cell->nbits = info->nbits; in nvmem_cell_info_to_nvmem_cell_nodup()
376 if (cell->nbits) in nvmem_cell_info_to_nvmem_cell_nodup()
377 cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset, in nvmem_cell_info_to_nvmem_cell_nodup()
380 if (!IS_ALIGNED(cell->offset, nvmem->stride)) { in nvmem_cell_info_to_nvmem_cell_nodup()
382 "cell %s unaligned to nvmem stride %d\n", in nvmem_cell_info_to_nvmem_cell_nodup()
383 cell->name ?: "<unknown>", nvmem->stride); in nvmem_cell_info_to_nvmem_cell_nodup()
392 struct nvmem_cell *cell) in nvmem_cell_info_to_nvmem_cell() argument
396 err = nvmem_cell_info_to_nvmem_cell_nodup(nvmem, info, cell); in nvmem_cell_info_to_nvmem_cell()
400 cell->name = kstrdup_const(info->name, GFP_KERNEL); in nvmem_cell_info_to_nvmem_cell()
401 if (!cell->name) in nvmem_cell_info_to_nvmem_cell()
408 * nvmem_add_cells() - Add cell information to an nvmem device
411 * @info: nvmem cell info to add to the device
486 struct nvmem_cell *cell; in nvmem_add_cells_from_table() local
495 cell = kzalloc(sizeof(*cell), GFP_KERNEL); in nvmem_add_cells_from_table()
496 if (!cell) { in nvmem_add_cells_from_table()
503 cell); in nvmem_add_cells_from_table()
505 kfree(cell); in nvmem_add_cells_from_table()
509 nvmem_cell_add(cell); in nvmem_add_cells_from_table()
522 struct nvmem_cell *iter, *cell = NULL; in nvmem_find_cell_by_name() local
527 cell = iter; in nvmem_find_cell_by_name()
533 return cell; in nvmem_find_cell_by_name()
540 struct nvmem_cell *cell; in nvmem_add_cells_from_of() local
553 cell = kzalloc(sizeof(*cell), GFP_KERNEL); in nvmem_add_cells_from_of()
554 if (!cell) in nvmem_add_cells_from_of()
557 cell->nvmem = nvmem; in nvmem_add_cells_from_of()
558 cell->np = of_node_get(child); in nvmem_add_cells_from_of()
559 cell->offset = be32_to_cpup(addr++); in nvmem_add_cells_from_of()
560 cell->bytes = be32_to_cpup(addr); in nvmem_add_cells_from_of()
561 cell->name = kasprintf(GFP_KERNEL, "%pOFn", child); in nvmem_add_cells_from_of()
565 cell->bit_offset = be32_to_cpup(addr++); in nvmem_add_cells_from_of()
566 cell->nbits = be32_to_cpup(addr); in nvmem_add_cells_from_of()
569 if (cell->nbits) in nvmem_add_cells_from_of()
570 cell->bytes = DIV_ROUND_UP( in nvmem_add_cells_from_of()
571 cell->nbits + cell->bit_offset, in nvmem_add_cells_from_of()
574 if (!IS_ALIGNED(cell->offset, nvmem->stride)) { in nvmem_add_cells_from_of()
575 dev_err(dev, "cell %s unaligned to nvmem stride %d\n", in nvmem_add_cells_from_of()
576 cell->name, nvmem->stride); in nvmem_add_cells_from_of()
578 kfree_const(cell->name); in nvmem_add_cells_from_of()
579 kfree(cell); in nvmem_add_cells_from_of()
583 nvmem_cell_add(cell); in nvmem_add_cells_from_of()
820 "could not increase module refcount for cell %s\n", in __nvmem_device_get()
956 * devm_nvmem_device_get() - Get nvmem cell of device form a given id
988 struct nvmem_cell *cell = ERR_PTR(-ENOENT); in nvmem_cell_get_from_lookup() local
1008 cell = ERR_CAST(nvmem); in nvmem_cell_get_from_lookup()
1012 cell = nvmem_find_cell_by_name(nvmem, in nvmem_cell_get_from_lookup()
1014 if (!cell) { in nvmem_cell_get_from_lookup()
1016 cell = ERR_PTR(-ENOENT); in nvmem_cell_get_from_lookup()
1023 return cell; in nvmem_cell_get_from_lookup()
1030 struct nvmem_cell *iter, *cell = NULL; in nvmem_find_cell_by_node() local
1035 cell = iter; in nvmem_find_cell_by_node()
1041 return cell; in nvmem_find_cell_by_node()
1045 * of_nvmem_cell_get() - Get a nvmem cell from given device node and cell id
1047 * @np: Device tree node that uses the nvmem cell.
1048 * @id: nvmem cell name from nvmem-cell-names property, or NULL
1049 * for the cell at index 0 (the lone cell with no accompanying
1050 * nvmem-cell-names property).
1060 struct nvmem_cell *cell; in of_nvmem_cell_get() local
1063 /* if cell name exists, find index to the name */ in of_nvmem_cell_get()
1065 index = of_property_match_string(np, "nvmem-cell-names", id); in of_nvmem_cell_get()
1080 cell = nvmem_find_cell_by_node(nvmem, cell_np); in of_nvmem_cell_get()
1081 if (!cell) { in of_nvmem_cell_get()
1086 return cell; in of_nvmem_cell_get()
1092 * nvmem_cell_get() - Get nvmem cell of device form a given cell name
1094 * @dev: Device that requests the nvmem cell.
1095 * @id: nvmem cell name to get (this corresponds with the name from the
1096 * nvmem-cell-names property for DT systems and with the con_id from
1105 struct nvmem_cell *cell; in nvmem_cell_get() local
1108 cell = of_nvmem_cell_get(dev->of_node, id); in nvmem_cell_get()
1109 if (!IS_ERR(cell) || PTR_ERR(cell) == -EPROBE_DEFER) in nvmem_cell_get()
1110 return cell; in nvmem_cell_get()
1113 /* NULL cell id only allowed for device tree; invalid otherwise */ in nvmem_cell_get()
1127 * devm_nvmem_cell_get() - Get nvmem cell of device form a given id
1129 * @dev: Device that requests the nvmem cell.
1130 * @id: nvmem cell name id to get.
1138 struct nvmem_cell **ptr, *cell; in devm_nvmem_cell_get() local
1144 cell = nvmem_cell_get(dev, id); in devm_nvmem_cell_get()
1145 if (!IS_ERR(cell)) { in devm_nvmem_cell_get()
1146 *ptr = cell; in devm_nvmem_cell_get()
1152 return cell; in devm_nvmem_cell_get()
1167 * devm_nvmem_cell_put() - Release previously allocated nvmem cell
1170 * @dev: Device that requests the nvmem cell.
1171 * @cell: Previously allocated nvmem cell by devm_nvmem_cell_get().
1173 void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell) in devm_nvmem_cell_put() argument
1178 devm_nvmem_cell_match, cell); in devm_nvmem_cell_put()
1185 * nvmem_cell_put() - Release previously allocated nvmem cell.
1187 * @cell: Previously allocated nvmem cell by nvmem_cell_get().
1189 void nvmem_cell_put(struct nvmem_cell *cell) in nvmem_cell_put() argument
1191 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_put()
1197 static void nvmem_shift_read_buffer_in_place(struct nvmem_cell *cell, void *buf) in nvmem_shift_read_buffer_in_place() argument
1200 int i, extra, bit_offset = cell->bit_offset; in nvmem_shift_read_buffer_in_place()
1208 for (i = 1; i < cell->bytes; i++) { in nvmem_shift_read_buffer_in_place()
1217 p += cell->bytes - 1; in nvmem_shift_read_buffer_in_place()
1221 extra = cell->bytes - DIV_ROUND_UP(cell->nbits, BITS_PER_BYTE); in nvmem_shift_read_buffer_in_place()
1226 *p &= GENMASK((cell->nbits%BITS_PER_BYTE) - 1, 0); in nvmem_shift_read_buffer_in_place()
1230 struct nvmem_cell *cell, in __nvmem_cell_read() argument
1235 rc = nvmem_reg_read(nvmem, cell->offset, buf, cell->bytes); in __nvmem_cell_read()
1241 if (cell->bit_offset || cell->nbits) in __nvmem_cell_read()
1242 nvmem_shift_read_buffer_in_place(cell, buf); in __nvmem_cell_read()
1245 *len = cell->bytes; in __nvmem_cell_read()
1251 * nvmem_cell_read() - Read a given nvmem cell
1253 * @cell: nvmem cell to be read.
1254 * @len: pointer to length of cell which will be populated on successful read;
1260 void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len) in nvmem_cell_read() argument
1262 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_read()
1269 buf = kzalloc(cell->bytes, GFP_KERNEL); in nvmem_cell_read()
1273 rc = __nvmem_cell_read(nvmem, cell, buf, len); in nvmem_cell_read()
1283 static void *nvmem_cell_prepare_write_buffer(struct nvmem_cell *cell, in nvmem_cell_prepare_write_buffer() argument
1286 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_prepare_write_buffer()
1287 int i, rc, nbits, bit_offset = cell->bit_offset; in nvmem_cell_prepare_write_buffer()
1290 nbits = cell->nbits; in nvmem_cell_prepare_write_buffer()
1291 buf = kzalloc(cell->bytes, GFP_KERNEL); in nvmem_cell_prepare_write_buffer()
1303 rc = nvmem_reg_read(nvmem, cell->offset, &v, 1); in nvmem_cell_prepare_write_buffer()
1309 for (i = 1; i < cell->bytes; i++) { in nvmem_cell_prepare_write_buffer()
1323 cell->offset + cell->bytes - 1, &v, 1); in nvmem_cell_prepare_write_buffer()
1337 * nvmem_cell_write() - Write to a given nvmem cell
1339 * @cell: nvmem cell to be written.
1341 * @len: length of buffer to be written to nvmem cell.
1345 int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len) in nvmem_cell_write() argument
1347 struct nvmem_device *nvmem = cell->nvmem; in nvmem_cell_write()
1351 (cell->bit_offset == 0 && len != cell->bytes)) in nvmem_cell_write()
1354 if (cell->bit_offset || cell->nbits) { in nvmem_cell_write()
1355 buf = nvmem_cell_prepare_write_buffer(cell, buf, len); in nvmem_cell_write()
1360 rc = nvmem_reg_write(nvmem, cell->offset, buf, cell->bytes); in nvmem_cell_write()
1363 if (cell->bit_offset || cell->nbits) in nvmem_cell_write()
1376 struct nvmem_cell *cell; in nvmem_cell_read_common() local
1380 cell = nvmem_cell_get(dev, cell_id); in nvmem_cell_read_common()
1381 if (IS_ERR(cell)) in nvmem_cell_read_common()
1382 return PTR_ERR(cell); in nvmem_cell_read_common()
1384 buf = nvmem_cell_read(cell, &len); in nvmem_cell_read_common()
1386 nvmem_cell_put(cell); in nvmem_cell_read_common()
1391 nvmem_cell_put(cell); in nvmem_cell_read_common()
1396 nvmem_cell_put(cell); in nvmem_cell_read_common()
1402 * nvmem_cell_read_u8() - Read a cell value as a u8
1404 * @dev: Device that requests the nvmem cell.
1405 * @cell_id: Name of nvmem cell to read.
1417 * nvmem_cell_read_u16() - Read a cell value as a u16
1419 * @dev: Device that requests the nvmem cell.
1420 * @cell_id: Name of nvmem cell to read.
1432 * nvmem_cell_read_u32() - Read a cell value as a u32
1434 * @dev: Device that requests the nvmem cell.
1435 * @cell_id: Name of nvmem cell to read.
1447 * nvmem_cell_read_u64() - Read a cell value as a u64
1449 * @dev: Device that requests the nvmem cell.
1450 * @cell_id: Name of nvmem cell to read.
1462 * nvmem_device_cell_read() - Read a given nvmem device and cell
1465 * @info: nvmem cell info to be read.
1474 struct nvmem_cell cell; in nvmem_device_cell_read() local
1481 rc = nvmem_cell_info_to_nvmem_cell_nodup(nvmem, info, &cell); in nvmem_device_cell_read()
1485 rc = __nvmem_cell_read(nvmem, &cell, buf, &len); in nvmem_device_cell_read()
1494 * nvmem_device_cell_write() - Write cell to a given nvmem device
1497 * @info: nvmem cell info to be written.
1498 * @buf: buffer to be written to cell.
1505 struct nvmem_cell cell; in nvmem_device_cell_write() local
1511 rc = nvmem_cell_info_to_nvmem_cell_nodup(nvmem, info, &cell); in nvmem_device_cell_write()
1515 return nvmem_cell_write(&cell, buf, cell.bytes); in nvmem_device_cell_write()
1549 * nvmem_device_write() - Write cell to a given nvmem device
1578 * nvmem_add_cell_table() - register a table of cell info entries
1580 * @table: table of cell info entries
1591 * nvmem_del_cell_table() - remove a previously registered cell info table
1593 * @table: table of cell info entries
1604 * nvmem_add_cell_lookups() - register a list of cell lookup entries
1606 * @entries: array of cell lookup entries
1607 * @nentries: number of cell lookup entries in the array
1621 * nvmem_del_cell_lookups() - remove a list of previously added cell lookup
1624 * @entries: array of cell lookup entries
1625 * @nentries: number of cell lookup entries in the array