302 static void nvmem_cell_drop(struct nvmem_cell *cell)  in nvmem_cell_drop()  argument
305 	list_del(&cell->node);  in nvmem_cell_drop()
307 	kfree(cell);  in nvmem_cell_drop()
312 	struct nvmem_cell *cell;  in nvmem_device_remove_all_cells()  local
316 		cell = list_entry(p, struct nvmem_cell, node);  in nvmem_device_remove_all_cells()
317 		if (cell->nvmem == nvmem)  in nvmem_device_remove_all_cells()
318 			nvmem_cell_drop(cell);  in nvmem_device_remove_all_cells()
322 static void nvmem_cell_add(struct nvmem_cell *cell)  in nvmem_cell_add()  argument
325 	list_add_tail(&cell->node, &nvmem_cells);  in nvmem_cell_add()
331 				   struct nvmem_cell *cell)  in nvmem_cell_info_to_nvmem_cell()  argument
333 	cell->nvmem = nvmem;  in nvmem_cell_info_to_nvmem_cell()
334 	cell->offset = info->offset;  in nvmem_cell_info_to_nvmem_cell()
335 	cell->bytes = info->bytes;  in nvmem_cell_info_to_nvmem_cell()
336 	cell->name = info->name;  in nvmem_cell_info_to_nvmem_cell()
338 	cell->bit_offset = info->bit_offset;  in nvmem_cell_info_to_nvmem_cell()
339 	cell->nbits = info->nbits;  in nvmem_cell_info_to_nvmem_cell()
341 	if (cell->nbits)  in nvmem_cell_info_to_nvmem_cell()
342 		cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset,  in nvmem_cell_info_to_nvmem_cell()
345 	if (!IS_ALIGNED(cell->offset, nvmem->stride)) {  in nvmem_cell_info_to_nvmem_cell()
348 			cell->name, nvmem->stride);  in nvmem_cell_info_to_nvmem_cell()
636 		struct nvmem_cell *cell = nvmem_find_cell(cell_id);  in __nvmem_device_get()  local
638 		if (cell) {  in __nvmem_device_get()
639 			nvmem = cell->nvmem;  in __nvmem_device_get()
640 			*cellp = cell;  in __nvmem_device_get()
815 	struct nvmem_cell *cell = NULL;  in nvmem_cell_get_from_list()  local
818 	nvmem = __nvmem_device_get(NULL, &cell, cell_id);  in nvmem_cell_get_from_list()
822 	return cell;  in nvmem_cell_get_from_list()
842 	struct nvmem_cell *cell;  in of_nvmem_cell_get()  local
873 	cell = kzalloc(sizeof(*cell), GFP_KERNEL);  in of_nvmem_cell_get()
874 	if (!cell) {  in of_nvmem_cell_get()
879 	cell->nvmem = nvmem;  in of_nvmem_cell_get()
880 	cell->offset = be32_to_cpup(addr++);  in of_nvmem_cell_get()
881 	cell->bytes = be32_to_cpup(addr);  in of_nvmem_cell_get()
882 	cell->name = cell_np->name;  in of_nvmem_cell_get()
886 		cell->bit_offset = be32_to_cpup(addr++);  in of_nvmem_cell_get()
887 		cell->nbits = be32_to_cpup(addr);  in of_nvmem_cell_get()
890 	if (cell->nbits)  in of_nvmem_cell_get()
891 		cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset,  in of_nvmem_cell_get()
894 	if (!IS_ALIGNED(cell->offset, nvmem->stride)) {  in of_nvmem_cell_get()
897 				cell->name, nvmem->stride);  in of_nvmem_cell_get()
902 	nvmem_cell_add(cell);  in of_nvmem_cell_get()
904 	return cell;  in of_nvmem_cell_get()
907 	kfree(cell);  in of_nvmem_cell_get()
929 	struct nvmem_cell *cell;  in nvmem_cell_get()  local
932 		cell = of_nvmem_cell_get(dev->of_node, cell_id);  in nvmem_cell_get()
933 		if (!IS_ERR(cell) || PTR_ERR(cell) == -EPROBE_DEFER)  in nvmem_cell_get()
934 			return cell;  in nvmem_cell_get()
962 	struct nvmem_cell **ptr, *cell;  in devm_nvmem_cell_get()  local
968 	cell = nvmem_cell_get(dev, id);  in devm_nvmem_cell_get()
969 	if (!IS_ERR(cell)) {  in devm_nvmem_cell_get()
970 		*ptr = cell;  in devm_nvmem_cell_get()
976 	return cell;  in devm_nvmem_cell_get()
997 void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell)  in devm_nvmem_cell_put()  argument
1002 				devm_nvmem_cell_match, cell);  in devm_nvmem_cell_put()
1013 void nvmem_cell_put(struct nvmem_cell *cell)  in nvmem_cell_put()  argument
1015 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_put()
1018 	nvmem_cell_drop(cell);  in nvmem_cell_put()
1022 static void nvmem_shift_read_buffer_in_place(struct nvmem_cell *cell, void *buf)  in nvmem_shift_read_buffer_in_place()  argument
1025 	int i, bit_offset = cell->bit_offset;  in nvmem_shift_read_buffer_in_place()
1033 		for (i = 1; i < cell->bytes; i++) {  in nvmem_shift_read_buffer_in_place()
1042 		if (cell->bytes != DIV_ROUND_UP(cell->nbits, BITS_PER_BYTE))  in nvmem_shift_read_buffer_in_place()
1046 	*p &= GENMASK((cell->nbits%BITS_PER_BYTE) - 1, 0);  in nvmem_shift_read_buffer_in_place()
1050 		      struct nvmem_cell *cell,  in __nvmem_cell_read()  argument
1055 	rc = nvmem_reg_read(nvmem, cell->offset, buf, cell->bytes);  in __nvmem_cell_read()
1061 	if (cell->bit_offset || cell->nbits)  in __nvmem_cell_read()
1062 		nvmem_shift_read_buffer_in_place(cell, buf);  in __nvmem_cell_read()
1065 		*len = cell->bytes;  in __nvmem_cell_read()
1080 void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)  in nvmem_cell_read()  argument
1082 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_read()
1089 	buf = kzalloc(cell->bytes, GFP_KERNEL);  in nvmem_cell_read()
1093 	rc = __nvmem_cell_read(nvmem, cell, buf, len);  in nvmem_cell_read()
1103 static void *nvmem_cell_prepare_write_buffer(struct nvmem_cell *cell,  in nvmem_cell_prepare_write_buffer()  argument
1106 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_prepare_write_buffer()
1107 	int i, rc, nbits, bit_offset = cell->bit_offset;  in nvmem_cell_prepare_write_buffer()
1110 	nbits = cell->nbits;  in nvmem_cell_prepare_write_buffer()
1111 	buf = kzalloc(cell->bytes, GFP_KERNEL);  in nvmem_cell_prepare_write_buffer()
1123 		rc = nvmem_reg_read(nvmem, cell->offset, &v, 1);  in nvmem_cell_prepare_write_buffer()
1129 		for (i = 1; i < cell->bytes; i++) {  in nvmem_cell_prepare_write_buffer()
1143 				    cell->offset + cell->bytes - 1, &v, 1);  in nvmem_cell_prepare_write_buffer()
1165 int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len)  in nvmem_cell_write()  argument
1167 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_write()
1171 	    (cell->bit_offset == 0 && len != cell->bytes))  in nvmem_cell_write()
1174 	if (cell->bit_offset || cell->nbits) {  in nvmem_cell_write()
1175 		buf = nvmem_cell_prepare_write_buffer(cell, buf, len);  in nvmem_cell_write()
1180 	rc = nvmem_reg_write(nvmem, cell->offset, buf, cell->bytes);  in nvmem_cell_write()
1183 	if (cell->bit_offset || cell->nbits)  in nvmem_cell_write()
1204 	struct nvmem_cell *cell;  in nvmem_cell_read_u32()  local
1208 	cell = nvmem_cell_get(dev, cell_id);  in nvmem_cell_read_u32()
1209 	if (IS_ERR(cell))  in nvmem_cell_read_u32()
1210 		return PTR_ERR(cell);  in nvmem_cell_read_u32()
1212 	buf = nvmem_cell_read(cell, &len);  in nvmem_cell_read_u32()
1214 		nvmem_cell_put(cell);  in nvmem_cell_read_u32()
1219 		nvmem_cell_put(cell);  in nvmem_cell_read_u32()
1225 	nvmem_cell_put(cell);  in nvmem_cell_read_u32()
1243 	struct nvmem_cell cell;  in nvmem_device_cell_read()  local
1250 	rc = nvmem_cell_info_to_nvmem_cell(nvmem, info, &cell);  in nvmem_device_cell_read()
1254 	rc = __nvmem_cell_read(nvmem, &cell, buf, &len);  in nvmem_device_cell_read()
1274 	struct nvmem_cell cell;  in nvmem_device_cell_write()  local
1280 	rc = nvmem_cell_info_to_nvmem_cell(nvmem, info, &cell);  in nvmem_device_cell_write()
1284 	return nvmem_cell_write(&cell, buf, cell.bytes);  in nvmem_device_cell_write()