1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2015-2017 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de>
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun #include <linux/kernel.h>
6*4882a593Smuzhiyun #include <linux/kthread.h>
7*4882a593Smuzhiyun #include <linux/siox.h>
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #define to_siox_master(_dev) container_of((_dev), struct siox_master, dev)
10*4882a593Smuzhiyun struct siox_master {
11*4882a593Smuzhiyun /* these fields should be initialized by the driver */
12*4882a593Smuzhiyun int busno;
13*4882a593Smuzhiyun int (*pushpull)(struct siox_master *smaster,
14*4882a593Smuzhiyun size_t setbuf_len, const u8 setbuf[],
15*4882a593Smuzhiyun size_t getbuf_len, u8 getbuf[]);
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun /* might be initialized by the driver, if 0 it is set to HZ / 40 */
18*4882a593Smuzhiyun unsigned long poll_interval; /* in jiffies */
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun /* framework private stuff */
21*4882a593Smuzhiyun struct mutex lock;
22*4882a593Smuzhiyun bool active;
23*4882a593Smuzhiyun struct module *owner;
24*4882a593Smuzhiyun struct device dev;
25*4882a593Smuzhiyun unsigned int num_devices;
26*4882a593Smuzhiyun struct list_head devices;
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun size_t setbuf_len, getbuf_len;
29*4882a593Smuzhiyun size_t buf_len;
30*4882a593Smuzhiyun u8 *buf;
31*4882a593Smuzhiyun u8 status;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun unsigned long last_poll;
34*4882a593Smuzhiyun struct task_struct *poll_thread;
35*4882a593Smuzhiyun };
36*4882a593Smuzhiyun
siox_master_get_devdata(struct siox_master * smaster)37*4882a593Smuzhiyun static inline void *siox_master_get_devdata(struct siox_master *smaster)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun return dev_get_drvdata(&smaster->dev);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun struct siox_master *siox_master_alloc(struct device *dev, size_t size);
siox_master_put(struct siox_master * smaster)43*4882a593Smuzhiyun static inline void siox_master_put(struct siox_master *smaster)
44*4882a593Smuzhiyun {
45*4882a593Smuzhiyun put_device(&smaster->dev);
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun int siox_master_register(struct siox_master *smaster);
49*4882a593Smuzhiyun void siox_master_unregister(struct siox_master *smaster);
50