rtl8211F_led_control

hc

2024-05-11 297b60346df8beafee954a0fd7c2d64f33f3b9bc

 kernel/include/linux/nvmem-provider.h
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@@ -1,12 +1,9 @@
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+/* SPDX-License-Identifier: GPL-2.0 */
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 /*
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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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@@ -14,6 +11,7 @@
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 #include <linux/err.h>
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 #include <linux/errno.h>
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+#include <linux/gpio/consumer.h>
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 struct nvmem_device;
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 struct nvmem_cell_info;
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@@ -21,6 +19,16 @@
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 				void *val, size_t bytes);
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 typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
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 				 void *val, size_t bytes);
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+
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+enum nvmem_type {
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+	NVMEM_TYPE_UNKNOWN = 0,
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+	NVMEM_TYPE_EEPROM,
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+	NVMEM_TYPE_OTP,
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+	NVMEM_TYPE_BATTERY_BACKED,
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+};
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+
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+#define NVMEM_DEVID_NONE	(-1)
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+#define NVMEM_DEVID_AUTO	(-2)
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 /**
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  * struct nvmem_config - NVMEM device configuration
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@@ -31,14 +39,17 @@
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  * @owner:	Pointer to exporter module. Used for refcounting.
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  * @cells:	Optional array of pre-defined NVMEM cells.
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  * @ncells:	Number of elements in cells.
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+ * @type:	Type of the nvmem storage
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  * @read_only:	Device is read-only.
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  * @root_only:	Device is accessibly to root only.
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+ * @no_of_node:	Device should not use the parent's of_node even if it's !NULL.
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  * @reg_read:	Callback to read data.
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  * @reg_write:	Callback to write data.
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  * @size:	Device size.
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  * @word_size:	Minimum read/write access granularity.
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  * @stride:	Minimum read/write access stride.
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  * @priv:	User context passed to read/write callbacks.
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+ * @wp-gpio:   Write protect pin
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  *
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  * Note: A default "nvmem<id>" name will be assigned to the device if
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  * no name is specified in its configuration. In such case "<id>" is
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@@ -52,10 +63,13 @@
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 	const char		*name;
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 	int			id;
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 	struct module		*owner;
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+	struct gpio_desc	*wp_gpio;
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 	const struct nvmem_cell_info	*cells;
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 	int			ncells;
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+	enum nvmem_type		type;
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 	bool			read_only;
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 	bool			root_only;
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+	bool			no_of_node;
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 	nvmem_reg_read_t	reg_read;
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 	nvmem_reg_write_t	reg_write;
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 	int	size;
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@@ -89,7 +103,7 @@
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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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+void nvmem_unregister(struct nvmem_device *nvmem);
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 struct nvmem_device *devm_nvmem_register(struct device *dev,
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 					 const struct nvmem_config *cfg);
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@@ -103,13 +117,10 @@
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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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+	return ERR_PTR(-EOPNOTSUPP);
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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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+static inline void nvmem_unregister(struct nvmem_device *nvmem) {}
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 static inline struct nvmem_device *
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 devm_nvmem_register(struct device *dev, const struct nvmem_config *c)
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 static inline int
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 devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
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 {
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-	return nvmem_unregister(nvmem);
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-
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+	return -EOPNOTSUPP;
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 }
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 static inline void nvmem_add_cell_table(struct nvmem_cell_table *table) {}