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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 48struct siox_master *devm_siox_master_alloc(struct device *dev, size_t size);49 50int siox_master_register(struct siox_master *smaster);51void siox_master_unregister(struct siox_master *smaster);52 53int devm_siox_master_register(struct device *dev, struct siox_master *smaster);54