| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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) |
| 10 | struct 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 | |
| 37 | static inline void *siox_master_get_devdata(struct siox_master *smaster) |
| 38 | { |
| 39 | return dev_get_drvdata(&smaster->dev); |
| 40 | } |
| 41 | |
| 42 | struct siox_master *siox_master_alloc(struct device *dev, size_t size); |
| 43 | static inline void siox_master_put(struct siox_master *smaster) |
| 44 | { |
| 45 | put_device(&smaster->dev); |
| 46 | } |
| 47 | |
| 48 | int siox_master_register(struct siox_master *smaster); |
| 49 | void siox_master_unregister(struct siox_master *smaster); |