LXR linux/drivers/siox/siox.h

   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)
  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
  48int siox_master_register(struct siox_master *smaster);
  49void siox_master_unregister(struct siox_master *smaster);
  50