106 static void nvmem_cell_drop(struct nvmem_cell *cell)  in nvmem_cell_drop()  argument
108 	blocking_notifier_call_chain(&nvmem_notifier, NVMEM_CELL_REMOVE, cell);  in nvmem_cell_drop()
110 	list_del(&cell->node);  in nvmem_cell_drop()
112 	of_node_put(cell->np);  in nvmem_cell_drop()
113 	kfree(cell->name);  in nvmem_cell_drop()
114 	kfree(cell);  in nvmem_cell_drop()
119 	struct nvmem_cell *cell, *p;  in nvmem_device_remove_all_cells()  local
121 	list_for_each_entry_safe(cell, p, &nvmem->cells, node)  in nvmem_device_remove_all_cells()
122 		nvmem_cell_drop(cell);  in nvmem_device_remove_all_cells()
125 static void nvmem_cell_add(struct nvmem_cell *cell)  in nvmem_cell_add()  argument
128 	list_add_tail(&cell->node, &cell->nvmem->cells);  in nvmem_cell_add()
130 	blocking_notifier_call_chain(&nvmem_notifier, NVMEM_CELL_ADD, cell);  in nvmem_cell_add()
135 				   struct nvmem_cell *cell)  in nvmem_cell_info_to_nvmem_cell()  argument
137 	cell->nvmem = nvmem;  in nvmem_cell_info_to_nvmem_cell()
138 	cell->offset = info->offset;  in nvmem_cell_info_to_nvmem_cell()
139 	cell->bytes = info->bytes;  in nvmem_cell_info_to_nvmem_cell()
140 	cell->name = info->name;  in nvmem_cell_info_to_nvmem_cell()
142 	cell->bit_offset = info->bit_offset;  in nvmem_cell_info_to_nvmem_cell()
143 	cell->nbits = info->nbits;  in nvmem_cell_info_to_nvmem_cell()
145 	if (cell->nbits)  in nvmem_cell_info_to_nvmem_cell()
146 		cell->bytes = DIV_ROUND_UP(cell->nbits + cell->bit_offset,  in nvmem_cell_info_to_nvmem_cell()
149 	if (!IS_ALIGNED(cell->offset, nvmem->stride)) {  in nvmem_cell_info_to_nvmem_cell()
152 			cell->name, nvmem->stride);  in nvmem_cell_info_to_nvmem_cell()
238 	struct nvmem_cell *cell;  in nvmem_add_cells_from_table()  local
247 				cell = kzalloc(sizeof(*cell), GFP_KERNEL);  in nvmem_add_cells_from_table()
248 				if (!cell) {  in nvmem_add_cells_from_table()
255 								     cell);  in nvmem_add_cells_from_table()
257 					kfree(cell);  in nvmem_add_cells_from_table()
261 				nvmem_cell_add(cell);  in nvmem_add_cells_from_table()
274 	struct nvmem_cell *iter, *cell = NULL;  in nvmem_find_cell_by_name()  local
279 			cell = iter;  in nvmem_find_cell_by_name()
285 	return cell;  in nvmem_find_cell_by_name()
292 	struct nvmem_cell *cell;  in nvmem_add_cells_from_of()  local
305 		cell = kzalloc(sizeof(*cell), GFP_KERNEL);  in nvmem_add_cells_from_of()
306 		if (!cell)  in nvmem_add_cells_from_of()
309 		cell->nvmem = nvmem;  in nvmem_add_cells_from_of()
310 		cell->np = of_node_get(child);  in nvmem_add_cells_from_of()
311 		cell->offset = be32_to_cpup(addr++);  in nvmem_add_cells_from_of()
312 		cell->bytes = be32_to_cpup(addr);  in nvmem_add_cells_from_of()
313 		cell->name = kasprintf(GFP_KERNEL, "%pOFn", child);  in nvmem_add_cells_from_of()
317 			cell->bit_offset = be32_to_cpup(addr++);  in nvmem_add_cells_from_of()
318 			cell->nbits = be32_to_cpup(addr);  in nvmem_add_cells_from_of()
321 		if (cell->nbits)  in nvmem_add_cells_from_of()
322 			cell->bytes = DIV_ROUND_UP(  in nvmem_add_cells_from_of()
323 					cell->nbits + cell->bit_offset,  in nvmem_add_cells_from_of()
326 		if (!IS_ALIGNED(cell->offset, nvmem->stride)) {  in nvmem_add_cells_from_of()
328 				cell->name, nvmem->stride);  in nvmem_add_cells_from_of()
330 			kfree(cell->name);  in nvmem_add_cells_from_of()
331 			kfree(cell);  in nvmem_add_cells_from_of()
335 		nvmem_cell_add(cell);  in nvmem_add_cells_from_of()
697 	struct nvmem_cell *cell = ERR_PTR(-ENOENT);  in nvmem_cell_get_from_lookup()  local
716 				cell = ERR_CAST(nvmem);  in nvmem_cell_get_from_lookup()
720 			cell = nvmem_find_cell_by_name(nvmem,  in nvmem_cell_get_from_lookup()
722 			if (!cell) {  in nvmem_cell_get_from_lookup()
724 				cell = ERR_PTR(-ENOENT);  in nvmem_cell_get_from_lookup()
731 	return cell;  in nvmem_cell_get_from_lookup()
738 	struct nvmem_cell *iter, *cell = NULL;  in nvmem_find_cell_by_node()  local
743 			cell = iter;  in nvmem_find_cell_by_node()
749 	return cell;  in nvmem_find_cell_by_node()
768 	struct nvmem_cell *cell;  in of_nvmem_cell_get()  local
788 	cell = nvmem_find_cell_by_node(nvmem, cell_np);  in of_nvmem_cell_get()
789 	if (!cell) {  in of_nvmem_cell_get()
794 	return cell;  in of_nvmem_cell_get()
813 	struct nvmem_cell *cell;  in nvmem_cell_get()  local
816 		cell = of_nvmem_cell_get(dev->of_node, id);  in nvmem_cell_get()
817 		if (!IS_ERR(cell) || PTR_ERR(cell) == -EPROBE_DEFER)  in nvmem_cell_get()
818 			return cell;  in nvmem_cell_get()
846 	struct nvmem_cell **ptr, *cell;  in devm_nvmem_cell_get()  local
852 	cell = nvmem_cell_get(dev, id);  in devm_nvmem_cell_get()
853 	if (!IS_ERR(cell)) {  in devm_nvmem_cell_get()
854 		*ptr = cell;  in devm_nvmem_cell_get()
860 	return cell;  in devm_nvmem_cell_get()
881 void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell)  in devm_nvmem_cell_put()  argument
886 				devm_nvmem_cell_match, cell);  in devm_nvmem_cell_put()
897 void nvmem_cell_put(struct nvmem_cell *cell)  in nvmem_cell_put()  argument
899 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_put()
905 static void nvmem_shift_read_buffer_in_place(struct nvmem_cell *cell, void *buf)  in nvmem_shift_read_buffer_in_place()  argument
908 	int i, extra, bit_offset = cell->bit_offset;  in nvmem_shift_read_buffer_in_place()
916 		for (i = 1; i < cell->bytes; i++) {  in nvmem_shift_read_buffer_in_place()
925 		p += cell->bytes - 1;  in nvmem_shift_read_buffer_in_place()
929 	extra = cell->bytes - DIV_ROUND_UP(cell->nbits, BITS_PER_BYTE);  in nvmem_shift_read_buffer_in_place()
934 	*p &= GENMASK((cell->nbits%BITS_PER_BYTE) - 1, 0);  in nvmem_shift_read_buffer_in_place()
938 		      struct nvmem_cell *cell,  in __nvmem_cell_read()  argument
943 	rc = nvmem_reg_read(nvmem, cell->offset, buf, cell->bytes);  in __nvmem_cell_read()
949 	if (cell->bit_offset || cell->nbits)  in __nvmem_cell_read()
950 		nvmem_shift_read_buffer_in_place(cell, buf);  in __nvmem_cell_read()
953 		*len = cell->bytes;  in __nvmem_cell_read()
968 void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len)  in nvmem_cell_read()  argument
970 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_read()
977 	buf = kzalloc(cell->bytes, GFP_KERNEL);  in nvmem_cell_read()
981 	rc = __nvmem_cell_read(nvmem, cell, buf, len);  in nvmem_cell_read()
991 static void *nvmem_cell_prepare_write_buffer(struct nvmem_cell *cell,  in nvmem_cell_prepare_write_buffer()  argument
994 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_prepare_write_buffer()
995 	int i, rc, nbits, bit_offset = cell->bit_offset;  in nvmem_cell_prepare_write_buffer()
998 	nbits = cell->nbits;  in nvmem_cell_prepare_write_buffer()
999 	buf = kzalloc(cell->bytes, GFP_KERNEL);  in nvmem_cell_prepare_write_buffer()
1011 		rc = nvmem_reg_read(nvmem, cell->offset, &v, 1);  in nvmem_cell_prepare_write_buffer()
1017 		for (i = 1; i < cell->bytes; i++) {  in nvmem_cell_prepare_write_buffer()
1031 				    cell->offset + cell->bytes - 1, &v, 1);  in nvmem_cell_prepare_write_buffer()
1053 int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len)  in nvmem_cell_write()  argument
1055 	struct nvmem_device *nvmem = cell->nvmem;  in nvmem_cell_write()
1059 	    (cell->bit_offset == 0 && len != cell->bytes))  in nvmem_cell_write()
1062 	if (cell->bit_offset || cell->nbits) {  in nvmem_cell_write()
1063 		buf = nvmem_cell_prepare_write_buffer(cell, buf, len);  in nvmem_cell_write()
1068 	rc = nvmem_reg_write(nvmem, cell->offset, buf, cell->bytes);  in nvmem_cell_write()
1071 	if (cell->bit_offset || cell->nbits)  in nvmem_cell_write()
1092 	struct nvmem_cell *cell;  in nvmem_cell_read_u16()  local
1096 	cell = nvmem_cell_get(dev, cell_id);  in nvmem_cell_read_u16()
1097 	if (IS_ERR(cell))  in nvmem_cell_read_u16()
1098 		return PTR_ERR(cell);  in nvmem_cell_read_u16()
1100 	buf = nvmem_cell_read(cell, &len);  in nvmem_cell_read_u16()
1102 		nvmem_cell_put(cell);  in nvmem_cell_read_u16()
1107 		nvmem_cell_put(cell);  in nvmem_cell_read_u16()
1112 	nvmem_cell_put(cell);  in nvmem_cell_read_u16()
1129 	struct nvmem_cell *cell;  in nvmem_cell_read_u32()  local
1133 	cell = nvmem_cell_get(dev, cell_id);  in nvmem_cell_read_u32()
1134 	if (IS_ERR(cell))  in nvmem_cell_read_u32()
1135 		return PTR_ERR(cell);  in nvmem_cell_read_u32()
1137 	buf = nvmem_cell_read(cell, &len);  in nvmem_cell_read_u32()
1139 		nvmem_cell_put(cell);  in nvmem_cell_read_u32()
1144 		nvmem_cell_put(cell);  in nvmem_cell_read_u32()
1150 	nvmem_cell_put(cell);  in nvmem_cell_read_u32()
1168 	struct nvmem_cell cell;  in nvmem_device_cell_read()  local
1175 	rc = nvmem_cell_info_to_nvmem_cell(nvmem, info, &cell);  in nvmem_device_cell_read()
1179 	rc = __nvmem_cell_read(nvmem, &cell, buf, &len);  in nvmem_device_cell_read()
1199 	struct nvmem_cell cell;  in nvmem_device_cell_write()  local
1205 	rc = nvmem_cell_info_to_nvmem_cell(nvmem, info, &cell);  in nvmem_device_cell_write()
1209 	return nvmem_cell_write(&cell, buf, cell.bytes);  in nvmem_device_cell_write()