LXR linux/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
  14struct 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[0];
  20};
  21
  22enum gnss_serial_pm_state {
  23        GNSS_SERIAL_OFF,
  24        GNSS_SERIAL_ACTIVE,
  25        GNSS_SERIAL_STANDBY,
  26};
  27
  28struct gnss_serial_ops {
  29        int (*set_power)(struct gnss_serial *gserial,
  30                                enum gnss_serial_pm_state state);
  31};
  32
  33extern const struct dev_pm_ops gnss_serial_pm_ops;
  34
  35struct gnss_serial *gnss_serial_allocate(struct serdev_device *gserial,
  36                                                size_t data_size);
  37void gnss_serial_free(struct gnss_serial *gserial);
  38
  39int gnss_serial_register(struct gnss_serial *gserial);
  40void gnss_serial_deregister(struct gnss_serial *gserial);
  41
  42static inline void *gnss_serial_get_drvdata(struct gnss_serial *gserial)
  43{
  44        return gserial->drvdata;
  45}
  46
  47#endif /* _LINUX_GNSS_SERIAL_H */
  48