projects / thirdparty / kernel / stable.git / blame
| Commit | Line | Data |
|---|---|---|
| 16216333 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| b5527a77 JD |
2 | /* |
| 3 | * i2c-smbus.h - SMBus extensions to the I2C protocol | |
| 4 | * | |
| 7c81c60f | 5 | * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de> |
| b5527a77 JD |
6 | */ |
| 7 | ||
| 8 | #ifndef _LINUX_I2C_SMBUS_H | |
| 9 | #define _LINUX_I2C_SMBUS_H | |
| 10 | ||
| 11 | #include <linux/i2c.h> | |
| e456cd37 BT |
12 | #include <linux/spinlock.h> |
| 13 | #include <linux/workqueue.h> | |
| b5527a77 JD |
14 | |
| 15 | ||
| 16 | /** | |
| 17 | * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client | |
| 18 | * @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0) | |
| 19 | * triggered | |
| 20 | * @irq: IRQ number, if the smbus_alert driver should take care of interrupt | |
| 21 | * handling | |
| 22 | * | |
| 23 | * If irq is not specified, the smbus_alert driver doesn't take care of | |
| 24 | * interrupt handling. In that case it is up to the I2C bus driver to either | |
| 25 | * handle the interrupts or to poll for alerts. | |
| 26 | * | |
| 27 | * If irq is specified then it it crucial that alert_edge_triggered is | |
| 28 | * properly set. | |
| 29 | */ | |
| 30 | struct i2c_smbus_alert_setup { | |
| b5527a77 JD |
31 | int irq; |
| 32 | }; | |
| 33 | ||
| 34 | struct i2c_client *i2c_setup_smbus_alert(struct i2c_adapter *adapter, | |
| 35 | struct i2c_smbus_alert_setup *setup); | |
| 36 | int i2c_handle_smbus_alert(struct i2c_client *ara); | |
| 37 | ||
| 69d17246 PR |
38 | #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF) |
| 39 | int of_i2c_setup_smbus_alert(struct i2c_adapter *adap); | |
| 40 | #else | |
| 41 | static inline int of_i2c_setup_smbus_alert(struct i2c_adapter *adap) | |
| 42 | { | |
| 43 | return 0; | |
| 44 | } | |
| 45 | #endif | |
| 46 | ||
| b5527a77 | 47 | #endif /* _LINUX_I2C_SMBUS_H */ |