Merge tag 'audit-pr-20200729' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoor...
[platform/kernel/linux-rpi.git] / drivers / gnss / serial.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Generic serial GNSS receiver driver
4  *
5  * Copyright (C) 2018 Johan Hovold <johan@kernel.org>
6  */
7
8 #ifndef _LINUX_GNSS_SERIAL_H
9 #define _LINUX_GNSS_SERIAL_H
10
11 #include <asm/termbits.h>
12 #include <linux/pm.h>
13
14 struct gnss_serial {
15         struct serdev_device *serdev;
16         struct gnss_device *gdev;
17         speed_t speed;
18         const struct gnss_serial_ops *ops;
19         unsigned long drvdata[];
20 };
21
22 enum gnss_serial_pm_state {
23         GNSS_SERIAL_OFF,
24         GNSS_SERIAL_ACTIVE,
25         GNSS_SERIAL_STANDBY,
26 };
27
28 struct gnss_serial_ops {
29         int (*set_power)(struct gnss_serial *gserial,
30                                 enum gnss_serial_pm_state state);
31 };
32
33 extern const struct dev_pm_ops gnss_serial_pm_ops;
34
35 struct gnss_serial *gnss_serial_allocate(struct serdev_device *gserial,
36                                                 size_t data_size);
37 void gnss_serial_free(struct gnss_serial *gserial);
38
39 int gnss_serial_register(struct gnss_serial *gserial);
40 void gnss_serial_deregister(struct gnss_serial *gserial);
41
42 static inline void *gnss_serial_get_drvdata(struct gnss_serial *gserial)
43 {
44         return gserial->drvdata;
45 }
46
47 #endif /* _LINUX_GNSS_SERIAL_H */