1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (C) 2015-2017 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de> |
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) |
10 | struct 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 | |
37 | static inline void *siox_master_get_devdata(struct siox_master *smaster) |
38 | { |
39 | return dev_get_drvdata(dev: &smaster->dev); |
40 | } |
41 | |
42 | struct siox_master *siox_master_alloc(struct device *dev, size_t size); |
43 | static inline void siox_master_put(struct siox_master *smaster) |
44 | { |
45 | put_device(dev: &smaster->dev); |
46 | } |
47 | |
48 | int siox_master_register(struct siox_master *smaster); |
49 | void siox_master_unregister(struct siox_master *smaster); |
50 | |