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This patch adds just providers part of the framework just to enable easy review. Up until now, NVMEM drivers like eeprom were stored in drivers/misc, where they all had to duplicate pretty much the same code to register a sysfs file, allow in-kernel users to access the content of the devices they were driving, etc. This was also a problem as far as other in-kernel users were involved, since the solutions used were pretty much different from on driver to another, there was a rather big abstraction leak. This introduction of this framework aims at solving this. It also introduces DT representation for consumer devices to go get the data they require (MAC Addresses, SoC/Revision ID, part numbers, and so on) from the nvmems. Having regmap interface to this framework would give much better abstraction for nvmems on different buses. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> [Maxime Ripard: intial version of eeprom framework] Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> Tested-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/*
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* nvmem framework provider.
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*
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* Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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* Copyright (C) 2013 Maxime Ripard <maxime.ripard@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef _LINUX_NVMEM_PROVIDER_H
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#define _LINUX_NVMEM_PROVIDER_H
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struct nvmem_device;
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struct nvmem_cell_info;
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struct nvmem_config {
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struct device *dev;
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const char *name;
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int id;
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struct module *owner;
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const struct nvmem_cell_info *cells;
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int ncells;
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bool read_only;
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};
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#if IS_ENABLED(CONFIG_NVMEM)
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struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
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int nvmem_unregister(struct nvmem_device *nvmem);
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#else
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static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
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{
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return ERR_PTR(-ENOSYS);
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}
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static inline int nvmem_unregister(struct nvmem_device *nvmem)
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{
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return -ENOSYS;
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}
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#endif /* CONFIG_NVMEM */
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#endif /* ifndef _LINUX_NVMEM_PROVIDER_H */
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