/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * i2c-smbus.h - SMBus extensions to the I2C protocol * * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de> */ #ifndef _LINUX_I2C_SMBUS_H #define _LINUX_I2C_SMBUS_H #include <linux/i2c.h> #include <linux/spinlock.h> #include <linux/workqueue.h> /** * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client * @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0) * triggered * @irq: IRQ number, if the smbus_alert driver should take care of interrupt * handling * * If irq is not specified, the smbus_alert driver doesn't take care of * interrupt handling. In that case it is up to the I2C bus driver to either * handle the interrupts or to poll for alerts. * * If irq is specified then it it crucial that alert_edge_triggered is * properly set. */ struct i2c_smbus_alert_setup { int irq; }; struct i2c_client *i2c_setup_smbus_alert(struct i2c_adapter *adapter, struct i2c_smbus_alert_setup *setup); int i2c_handle_smbus_alert(struct i2c_client *ara); #if IS_ENABLED([31mCONFIG_I2C_SMBUS[0m) && IS_ENABLED([31mCONFIG_OF[0m) int of_i2c_setup_smbus_alert(struct i2c_adapter *adap); #else static inline int of_i2c_setup_smbus_alert(struct i2c_adapter *adap) { return 0; } #endif #endif /* _LINUX_I2C_SMBUS_H */ |