diff options
Diffstat (limited to 'include/linux/nvmem-consumer.h')
| -rw-r--r-- | include/linux/nvmem-consumer.h | 100 |
1 files changed, 77 insertions, 23 deletions
diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h index 4e85447f7860..312bfa5efd80 100644 --- a/include/linux/nvmem-consumer.h +++ b/include/linux/nvmem-consumer.h @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * nvmem framework consumer. * * Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org> * Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #ifndef _LINUX_NVMEM_CONSUMER_H @@ -14,6 +11,7 @@ #include <linux/err.h> #include <linux/errno.h> +#include <linux/notifier.h> struct device; struct device_node; @@ -29,11 +27,36 @@ struct nvmem_cell_info { unsigned int nbits; }; +/** + * struct nvmem_cell_lookup - cell lookup entry + * + * @nvmem_name: Name of the provider. + * @cell_name: Name of the nvmem cell as defined in the name field of + * struct nvmem_cell_info. + * @dev_id: Name of the consumer device that will be associated with + * this cell. + * @con_id: Connector id for this cell lookup. + */ +struct nvmem_cell_lookup { + const char *nvmem_name; + const char *cell_name; + const char *dev_id; + const char *con_id; + struct list_head node; +}; + +enum { + NVMEM_ADD = 1, + NVMEM_REMOVE, + NVMEM_CELL_ADD, + NVMEM_CELL_REMOVE, +}; + #if IS_ENABLED(CONFIG_NVMEM) /* Cell based interface */ -struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *name); -struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *name); +struct nvmem_cell *nvmem_cell_get(struct device *dev, const char *id); +struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, const char *id); void nvmem_cell_put(struct nvmem_cell *cell); void devm_nvmem_cell_put(struct device *dev, struct nvmem_cell *cell); void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len); @@ -55,18 +78,28 @@ ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, int nvmem_device_cell_write(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf); +const char *nvmem_dev_name(struct nvmem_device *nvmem); + +void nvmem_add_cell_lookups(struct nvmem_cell_lookup *entries, + size_t nentries); +void nvmem_del_cell_lookups(struct nvmem_cell_lookup *entries, + size_t nentries); + +int nvmem_register_notifier(struct notifier_block *nb); +int nvmem_unregister_notifier(struct notifier_block *nb); + #else static inline struct nvmem_cell *nvmem_cell_get(struct device *dev, - const char *name) + const char *id) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(-EOPNOTSUPP); } static inline struct nvmem_cell *devm_nvmem_cell_get(struct device *dev, - const char *name) + const char *id) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(-EOPNOTSUPP); } static inline void devm_nvmem_cell_put(struct device *dev, @@ -80,31 +113,31 @@ static inline void nvmem_cell_put(struct nvmem_cell *cell) static inline void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(-EOPNOTSUPP); } static inline int nvmem_cell_write(struct nvmem_cell *cell, const char *buf, size_t len) { - return -ENOSYS; + return -EOPNOTSUPP; } static inline int nvmem_cell_read_u32(struct device *dev, const char *cell_id, u32 *val) { - return -ENOSYS; + return -EOPNOTSUPP; } static inline struct nvmem_device *nvmem_device_get(struct device *dev, const char *name) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(-EOPNOTSUPP); } static inline struct nvmem_device *devm_nvmem_device_get(struct device *dev, const char *name) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(-EOPNOTSUPP); } static inline void nvmem_device_put(struct nvmem_device *nvmem) @@ -120,47 +153,68 @@ static inline ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf) { - return -ENOSYS; + return -EOPNOTSUPP; } static inline int nvmem_device_cell_write(struct nvmem_device *nvmem, struct nvmem_cell_info *info, void *buf) { - return -ENOSYS; + return -EOPNOTSUPP; } static inline int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf) { - return -ENOSYS; + return -EOPNOTSUPP; } static inline int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset, size_t bytes, void *buf) { - return -ENOSYS; + return -EOPNOTSUPP; } + +static inline const char *nvmem_dev_name(struct nvmem_device *nvmem) +{ + return NULL; +} + +static inline void +nvmem_add_cell_lookups(struct nvmem_cell_lookup *entries, size_t nentries) {} +static inline void +nvmem_del_cell_lookups(struct nvmem_cell_lookup *entries, size_t nentries) {} + +static inline int nvmem_register_notifier(struct notifier_block *nb) +{ + return -EOPNOTSUPP; +} + +static inline int nvmem_unregister_notifier(struct notifier_block *nb) +{ + return -EOPNOTSUPP; +} + #endif /* CONFIG_NVMEM */ #if IS_ENABLED(CONFIG_NVMEM) && IS_ENABLED(CONFIG_OF) struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, - const char *name); + const char *id); struct nvmem_device *of_nvmem_device_get(struct device_node *np, const char *name); #else static inline struct nvmem_cell *of_nvmem_cell_get(struct device_node *np, - const char *name) + const char *id) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(-EOPNOTSUPP); } static inline struct nvmem_device *of_nvmem_device_get(struct device_node *np, const char *name) { - return ERR_PTR(-ENOSYS); + return ERR_PTR(-EOPNOTSUPP); } #endif /* CONFIG_NVMEM && CONFIG_OF */ |