| /* 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(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 */ |