205 static void nvmem_cell_drop(struct nvmem_cell *cell)  in nvmem_cell_drop()  argument
208 	list_del(&cell->node);  in nvmem_cell_drop()
210 	kfree(cell);  in nvmem_cell_drop()
215 	struct nvmem_cell *cell;  in nvmem_device_remove_all_cells()  local
219 		cell = list_entry(p, struct nvmem_cell, node);  in nvmem_device_remove_all_cells()
220 		if (cell->nvmem == nvmem)  in nvmem_device_remove_all_cells()
221 			nvmem_cell_drop(cell);  in nvmem_device_remove_all_cells()
225 static void nvmem_cell_add(struct nvmem_cell *cell)  in nvmem_cell_add()  argument
228 	list_add_tail(&cell->node, &nvmem_cells);  in nvmem_cell_add()
234 				   struct nvmem_cell *cell)  in nvmem_cell_info_to_nvmem_cell()  argument
236 	cell->nvmem = nvmem;  in nvmem_cell_info_to_nvmem_cell()
237 	cell->offset = info->offset;  in nvmem_cell_info_to_nvmem_cell()
238 	cell->bytes = info->bytes;  in nvmem_cell_info_to_nvmem_cell()
239 	cell->name = info->name;  in nvmem_cell_info_to_nvmem_cell()
241 	cell->bit_offset = info->bit_offset;  in nvmem_cell_info_to_nvmem_cell()
242 	cell->nbits = info->nbits;  in nvmem_cell_info_to_nvmem_cell()
244 	if (cell->nbits)  in nvmem_cell_info_to_nvmem_cell()
245 		cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset,  in nvmem_cell_info_to_nvmem_cell()
248 	if (!IS_ALIGNED(cell->offset, nvmem->stride)) {  in nvmem_cell_info_to_nvmem_cell()
251 			cell->name, nvmem->stride);  in nvmem_cell_info_to_nvmem_cell()
409 		struct nvmem_cell *cell = nvmem_find_cell(cell_id);  in __nvmem_device_get()  local
411 		if (cell) {  in __nvmem_device_get()
412 			nvmem = cell->nvmem;  in __nvmem_device_get()
413 			*cellp = cell;  in __nvmem_device_get()
592 	struct nvmem_cell *cell = NULL;  in nvmem_cell_get_from_list()  local
595 	nvmem = __nvmem_device_get(NULL, &cell, cell_id);  in nvmem_cell_get_from_list()
599 	return cell;  in nvmem_cell_get_from_list()
617 	struct nvmem_cell *cell;  in of_nvmem_cell_get()  local
644 	cell = kzalloc(sizeof(*cell), GFP_KERNEL);  in of_nvmem_cell_get()
645 	if (!cell) {  in of_nvmem_cell_get()
650 	cell->nvmem = nvmem;  in of_nvmem_cell_get()
651 	cell->offset = be32_to_cpup(addr++);  in of_nvmem_cell_get()
652 	cell->bytes = be32_to_cpup(addr);  in of_nvmem_cell_get()
653 	cell->name = cell_np->name;  in of_nvmem_cell_get()
657 		cell->bit_offset = be32_to_cpup(addr++);  in of_nvmem_cell_get()
658 		cell->nbits = be32_to_cpup(addr);  in of_nvmem_cell_get()
661 	if (cell->nbits)  in of_nvmem_cell_get()
662 		cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset,  in of_nvmem_cell_get()
665 	if (!IS_ALIGNED(cell->offset, nvmem->stride)) {  in of_nvmem_cell_get()
668 				cell->name, nvmem->stride);  in of_nvmem_cell_get()
673 	nvmem_cell_add(cell);  in of_nvmem_cell_get()
675 	return cell;  in of_nvmem_cell_get()
678 	kfree(cell);  in of_nvmem_cell_get()
700 	struct nvmem_cell *cell;  in nvmem_cell_get()  local
703 		cell = of_nvmem_cell_get(dev->of_node, cell_id);  in nvmem_cell_get()
704 		if (!IS_ERR(cell) || PTR_ERR(cell) == -EPROBE_DEFER)  in nvmem_cell_get()
705 			return cell;  in nvmem_cell_get()
729 	struct nvmem_cell **ptr, *cell;  in devm_nvmem_cell_get()  local
735 	cell = nvmem_cell_get(dev, id);  in devm_nvmem_cell_get()
736 	if (!IS_ERR(cell)) {  in devm_nvmem_cell_get()
737 		*ptr = cell;  in devm_nvmem_cell_get()
743 	return cell;  in devm_nvmem_cell_get()
763 void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell)  in devm_nvmem_cell_put()  argument
768 				devm_nvmem_cell_match, cell);  in devm_nvmem_cell_put()
779 void nvmem_cell_put(struct nvmem_cell *cell)  in nvmem_cell_put()  argument
781 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_put()
784 	nvmem_cell_drop(cell);  in nvmem_cell_put()
788 static inline void nvmem_shift_read_buffer_in_place(struct nvmem_cell *cell,  in nvmem_shift_read_buffer_in_place()  argument
792 	int i, bit_offset = cell->bit_offset;  in nvmem_shift_read_buffer_in_place()
800 		for (i = 1; i < cell->bytes; i++) {  in nvmem_shift_read_buffer_in_place()
809 		if (cell->bytes != DIV_ROUND_UP(cell->nbits, BITS_PER_BYTE))  in nvmem_shift_read_buffer_in_place()
813 	*p &= GENMASK((cell->nbits%BITS_PER_BYTE) - 1, 0);  in nvmem_shift_read_buffer_in_place()
817 		      struct nvmem_cell *cell,  in __nvmem_cell_read()  argument
822 	rc = regmap_raw_read(nvmem->regmap, cell->offset, buf, cell->bytes);  in __nvmem_cell_read()
828 	if (cell->bit_offset || cell->nbits)  in __nvmem_cell_read()
829 		nvmem_shift_read_buffer_in_place(cell, buf);  in __nvmem_cell_read()
831 	*len = cell->bytes;  in __nvmem_cell_read()
845 void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)  in nvmem_cell_read()  argument
847 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_read()
854 	buf = kzalloc(cell->bytes, GFP_KERNEL);  in nvmem_cell_read()
858 	rc = __nvmem_cell_read(nvmem, cell, buf, len);  in nvmem_cell_read()
868 static inline void *nvmem_cell_prepare_write_buffer(struct nvmem_cell *cell,  in nvmem_cell_prepare_write_buffer()  argument
871 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_prepare_write_buffer()
872 	int i, rc, nbits, bit_offset = cell->bit_offset;  in nvmem_cell_prepare_write_buffer()
875 	nbits = cell->nbits;  in nvmem_cell_prepare_write_buffer()
876 	buf = kzalloc(cell->bytes, GFP_KERNEL);  in nvmem_cell_prepare_write_buffer()
888 		rc = regmap_raw_read(nvmem->regmap, cell->offset, &v, 1);  in nvmem_cell_prepare_write_buffer()
892 		for (i = 1; i < cell->bytes; i++) {  in nvmem_cell_prepare_write_buffer()
906 				    cell->offset + cell->bytes - 1, &v, 1);  in nvmem_cell_prepare_write_buffer()
923 int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len)  in nvmem_cell_write()  argument
925 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_write()
929 	    (cell->bit_offset == 0 && len != cell->bytes))  in nvmem_cell_write()
932 	if (cell->bit_offset || cell->nbits) {  in nvmem_cell_write()
933 		buf = nvmem_cell_prepare_write_buffer(cell, buf, len);  in nvmem_cell_write()
938 	rc = regmap_raw_write(nvmem->regmap, cell->offset, buf, cell->bytes);  in nvmem_cell_write()
941 	if (cell->bit_offset || cell->nbits)  in nvmem_cell_write()
964 	struct nvmem_cell cell;  in nvmem_device_cell_read()  local
971 	rc = nvmem_cell_info_to_nvmem_cell(nvmem, info, &cell);  in nvmem_device_cell_read()
975 	rc = __nvmem_cell_read(nvmem, &cell, buf, &len);  in nvmem_device_cell_read()
995 	struct nvmem_cell cell;  in nvmem_device_cell_write()  local
1001 	rc = nvmem_cell_info_to_nvmem_cell(nvmem, info, &cell);  in nvmem_device_cell_write()
1005 	return nvmem_cell_write(&cell, buf, cell.bytes);  in nvmem_device_cell_write()