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91d5bb579c
This allows to simplify siox master drivers in the next step. Acked-by: Thorsten Scherer <t.scherer@eckelmann.de> Link: https://lore.kernel.org/r/e961dfb3e94f106b16f5eacff2110fc7fa0cab13.1708328466.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2015-2017 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de>
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*/
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#include <linux/kernel.h>
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#include <linux/kthread.h>
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#include <linux/siox.h>
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#define to_siox_master(_dev) container_of((_dev), struct siox_master, dev)
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struct siox_master {
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/* these fields should be initialized by the driver */
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int busno;
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int (*pushpull)(struct siox_master *smaster,
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size_t setbuf_len, const u8 setbuf[],
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size_t getbuf_len, u8 getbuf[]);
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/* might be initialized by the driver, if 0 it is set to HZ / 40 */
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unsigned long poll_interval; /* in jiffies */
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/* framework private stuff */
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struct mutex lock;
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bool active;
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struct module *owner;
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struct device dev;
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unsigned int num_devices;
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struct list_head devices;
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size_t setbuf_len, getbuf_len;
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size_t buf_len;
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u8 *buf;
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u8 status;
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unsigned long last_poll;
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struct task_struct *poll_thread;
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};
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static inline void *siox_master_get_devdata(struct siox_master *smaster)
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{
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return dev_get_drvdata(&smaster->dev);
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}
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struct siox_master *siox_master_alloc(struct device *dev, size_t size);
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static inline void siox_master_put(struct siox_master *smaster)
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{
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put_device(&smaster->dev);
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}
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struct siox_master *devm_siox_master_alloc(struct device *dev, size_t size);
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int siox_master_register(struct siox_master *smaster);
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void siox_master_unregister(struct siox_master *smaster);
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int devm_siox_master_register(struct device *dev, struct siox_master *smaster);
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