1 /* SPDX-License-Identifier: GPL-2.0 */
3  * nvmem framework provider.
6  * Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com>
36 #define NVMEM_DEVID_NONE	(-1)
37 #define NVMEM_DEVID_AUTO	(-2)
40  * struct nvmem_keepout - NVMEM register keepout range.
53  * struct nvmem_cell_info - NVMEM cell description
55  * @offset:	Offset within the NVMEM device.
78  * struct nvmem_config - NVMEM device configuration
84  * @cells:	Optional array of pre-defined NVMEM cells.
86  * @add_legacy_fixed_of_cells:	Read fixed NVMEM cells from old OF syntax.
91  * @type:	Type of the nvmem storage
92  * @read_only:	Device is read-only.
102  * @layout:	Fixed layout associated with this nvmem device.
104  * Note: A default "nvmem<id>" name will be assigned to the device if
108  * Note: Specifying name and setting id to -1 implies a unique device
109  * whose name is provided as-is (kept unaltered).
119 	void (*fixup_dt_cell_info)(struct nvmem_device *nvmem,
127 	struct nvmem_layout	*layout;  member
141  * struct nvmem_cell_table - NVMEM cell definitions for given provider
149  * that don't can't access the nvmem provided structure but wish to register
160  * struct nvmem_layout - NVMEM layout definitions
162  * @dev:		Device-model layout device.
163  * @nvmem:		The underlying NVMEM device
164  * @add_cells:		Will be called if a nvmem device is found which
165  *			has this layout. The function will add layout
168  * A nvmem device can hold a well defined structure which can just be
170  * pairs. A nvmem layout can parse the nvmem device and add appropriate
175 	struct nvmem_device *nvmem;  member
176 	int (*add_cells)(struct nvmem_layout *layout);
181 	int (*probe)(struct nvmem_layout *layout);
182 	void (*remove)(struct nvmem_layout *layout);
188 void nvmem_unregister(struct nvmem_device *nvmem);
196 int nvmem_add_one_cell(struct nvmem_device *nvmem,
199 int nvmem_layout_register(struct nvmem_layout *layout);
200 void nvmem_layout_unregister(struct nvmem_layout *layout);
215 	return ERR_PTR(-EOPNOTSUPP);  in nvmem_register()
218 static inline void nvmem_unregister(struct nvmem_device *nvmem) {}  in nvmem_unregister()  argument
228 static inline int nvmem_add_one_cell(struct nvmem_device *nvmem,  in nvmem_add_one_cell()  argument
231 	return -EOPNOTSUPP;  in nvmem_add_one_cell()
234 static inline int nvmem_layout_register(struct nvmem_layout *layout)  in nvmem_layout_register()  argument
236 	return -EOPNOTSUPP;  in nvmem_layout_register()
239 static inline void nvmem_layout_unregister(struct nvmem_layout *layout) {}  in nvmem_layout_unregister()  argument
246  * of_nvmem_layout_get_container() - Get OF node of layout container
248  * @nvmem: nvmem device
253 struct device_node *of_nvmem_layout_get_container(struct nvmem_device *nvmem);
257 static inline struct device_node *of_nvmem_layout_get_container(struct nvmem_device *nvmem)  in of_nvmem_layout_get_container()  argument