2010-03-02 19:23:42 +08:00
|
|
|
/*
|
|
|
|
|
* i2c-smbus.h - SMBus extensions to the I2C protocol
|
|
|
|
|
*
|
2014-01-30 03:40:08 +08:00
|
|
|
* Copyright (C) 2010 Jean Delvare <jdelvare@suse.de>
|
2010-03-02 19:23:42 +08:00
|
|
|
*
|
|
|
|
|
* 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
|
2012-03-27 03:47:19 +08:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
|
|
|
* MA 02110-1301 USA.
|
2010-03-02 19:23:42 +08:00
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#ifndef _LINUX_I2C_SMBUS_H
|
|
|
|
|
#define _LINUX_I2C_SMBUS_H
|
|
|
|
|
|
|
|
|
|
#include <linux/i2c.h>
|
2016-06-09 22:53:48 +08:00
|
|
|
#include <linux/spinlock.h>
|
|
|
|
|
#include <linux/workqueue.h>
|
2010-03-02 19:23:42 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 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);
|
|
|
|
|
|
2017-08-24 17:31:03 +08:00
|
|
|
#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
|
|
|
|
|
|
2010-03-02 19:23:42 +08:00
|
|
|
#endif /* _LINUX_I2C_SMBUS_H */
|
