/* * i2c-smbus.h - SMBus extensions to the I2C protocol * * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301 USA. */ #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(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF) 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 */