aboutsummaryrefslogtreecommitdiff
path: root/drivers/nvmem/nvmem.h
blob: be0d66d75c8aa50cbae773e097f28ac11e88eb19 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _DRIVERS_NVMEM_H
#define _DRIVERS_NVMEM_H

#include <linux/device.h>
#include <linux/fs.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/nvmem-consumer.h>
#include <linux/nvmem-provider.h>
#include <linux/gpio/consumer.h>

struct nvmem_device {
	struct module		*owner;
	struct device		dev;
	int			stride;
	int			word_size;
	int			id;
	struct kref		refcnt;
	size_t			size;
	bool			read_only;
	int			flags;
	enum nvmem_type		type;
	struct bin_attribute	eeprom;
	struct device		*base_dev;
	struct list_head	cells;
	nvmem_reg_read_t	reg_read;
	nvmem_reg_write_t	reg_write;
	struct gpio_desc	*wp_gpio;
	void *priv;
};

#define to_nvmem_device(d) container_of(d, struct nvmem_device, dev)
#define FLAG_COMPAT		BIT(0)

#ifdef CONFIG_NVMEM_SYSFS
const struct attribute_group **nvmem_sysfs_get_groups(
					struct nvmem_device *nvmem,
					const struct nvmem_config *config);
int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem,
			      const struct nvmem_config *config);
void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem,
			      const struct nvmem_config *config);
#else
static inline const struct attribute_group **nvmem_sysfs_get_groups(
					struct nvmem_device *nvmem,
					const struct nvmem_config *config)
{
	return NULL;
}

static inline int nvmem_sysfs_setup_compat(struct nvmem_device *nvmem,
				      const struct nvmem_config *config)
{
	return -ENOSYS;
}
static inline void nvmem_sysfs_remove_compat(struct nvmem_device *nvmem,
			      const struct nvmem_config *config)
{
}
#endif /* CONFIG_NVMEM_SYSFS */

#endif /* _DRIVERS_NVMEM_H */