blob: f08b43b713c5cdd2f01904646d7bfc85a81e496c (
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
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015-2017 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de>
*/
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/siox.h>
#define to_siox_master(_dev) container_of((_dev), struct siox_master, dev)
struct siox_master {
/* these fields should be initialized by the driver */
int busno;
int (*pushpull)(struct siox_master *smaster,
size_t setbuf_len, const u8 setbuf[],
size_t getbuf_len, u8 getbuf[]);
/* might be initialized by the driver, if 0 it is set to HZ / 40 */
unsigned long poll_interval; /* in jiffies */
/* framework private stuff */
struct mutex lock;
bool active;
struct module *owner;
struct device dev;
unsigned int num_devices;
struct list_head devices;
size_t setbuf_len, getbuf_len;
size_t buf_len;
u8 *buf;
u8 status;
unsigned long last_poll;
struct task_struct *poll_thread;
};
static inline void *siox_master_get_devdata(struct siox_master *smaster)
{
return dev_get_drvdata(&smaster->dev);
}
struct siox_master *siox_master_alloc(struct device *dev, size_t size);
static inline void siox_master_put(struct siox_master *smaster)
{
put_device(&smaster->dev);
}
int siox_master_register(struct siox_master *smaster);
void siox_master_unregister(struct siox_master *smaster);
|
