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| author | Yangtao Li <tiny.windzz@gmail.com> | 2020-03-10 16:22:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-19 09:41:02 +0300 |
| commit | 8b977c5498b8336b0c61b0fa72f6353e71f938da (patch) | |
| tree | 0f3fc0615140f4f6c0036e32e44675aaded61fa7 /include/linux/nvmem-consumer.h | |
| parent | 6bb317ce7564fdf3b6bbb3e6ea9193fafde0ba8d (diff) | |
| download | linux-8b977c5498b8336b0c61b0fa72f6353e71f938da.tar.xz | |
nvmem: core: add nvmem_cell_read_u64
Add nvmem_cell_read_u64() helper to ease read of an u64 value on consumer
side. This helper is useful on some sunxi platform that has 64 bits data
cells stored in no volatile memory.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200310132257.23358-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/nvmem-consumer.h')
| -rw-r--r-- | include/linux/nvmem-consumer.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/nvmem-consumer.h b/include/linux/nvmem-consumer.h index d3776be48c53..1b311d27c9b8 100644 --- a/include/linux/nvmem-consumer.h +++ b/include/linux/nvmem-consumer.h @@ -63,6 +63,7 @@ void *nvmem_cell_read(struct nvmem_cell *cell, size_t *len); int nvmem_cell_write(struct nvmem_cell *cell, void *buf, size_t len); int nvmem_cell_read_u16(struct device *dev, const char *cell_id, u16 *val); int nvmem_cell_read_u32(struct device *dev, const char *cell_id, u32 *val); +int nvmem_cell_read_u64(struct device *dev, const char *cell_id, u64 *val); /* direct nvmem device read/write interface */ struct nvmem_device *nvmem_device_get(struct device *dev, const char *name); @@ -138,6 +139,12 @@ static inline int nvmem_cell_read_u32(struct device *dev, return -EOPNOTSUPP; } +static inline int nvmem_cell_read_u64(struct device *dev, + const char *cell_id, u64 *val) +{ + return -EOPNOTSUPP; +} + static inline struct nvmem_device *nvmem_device_get(struct device *dev, const char *name) { |