projects/linux·blob master · refs

53 lines · 1.4 KiB

1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2015-2017 Pengutronix, Uwe Kleine-König <[email protected]>
4 */
5#include <linux/kernel.h>
6#include <linux/kthread.h>
7#include <linux/siox.h>
8
9#define to_siox_master(_dev) container_of((_dev), struct siox_master, dev)
10struct siox_master {
11 /* these fields should be initialized by the driver */
12 int busno;
13 int (*pushpull)(struct siox_master *smaster,
14 size_t setbuf_len, const u8 setbuf[],
15 size_t getbuf_len, u8 getbuf[]);
16
17 /* might be initialized by the driver, if 0 it is set to HZ / 40 */
18 unsigned long poll_interval; /* in jiffies */
19
20 /* framework private stuff */
21 struct mutex lock;
22 bool active;
23 struct module *owner;
24 struct device dev;
25 unsigned int num_devices;
26 struct list_head devices;
27
28 size_t setbuf_len, getbuf_len;
29 size_t buf_len;
30 u8 *buf;
31 u8 status;
32
33 unsigned long last_poll;
34 struct task_struct *poll_thread;
35};
36
37static inline void *siox_master_get_devdata(struct siox_master *smaster)
38{
39 return dev_get_drvdata(&smaster->dev);
40}
41
42struct siox_master *siox_master_alloc(struct device *dev, size_t size);
43static inline void siox_master_put(struct siox_master *smaster)
44{
45 put_device(&smaster->dev);
46}
47
48struct siox_master *devm_siox_master_alloc(struct device *dev, size_t size);
49
50int siox_master_register(struct siox_master *smaster);
51void siox_master_unregister(struct siox_master *smaster);
52
53int devm_siox_master_register(struct device *dev, struct siox_master *smaster);