1 /* SPDX-License-Identifier: GPL-2.0-or-later * <<
2 /* 1 /*
3 * i2c-smbus.h - SMBus extensions to the I2C p 2 * i2c-smbus.h - SMBus extensions to the I2C protocol
4 * 3 *
5 * Copyright (C) 2010-2019 Jean Delvare <jdelv !! 4 * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de>
>> 5 *
>> 6 * This program is free software; you can redistribute it and/or modify
>> 7 * it under the terms of the GNU General Public License as published by
>> 8 * the Free Software Foundation; either version 2 of the License, or
>> 9 * (at your option) any later version.
>> 10 *
>> 11 * This program is distributed in the hope that it will be useful,
>> 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> 14 * GNU General Public License for more details.
>> 15 *
>> 16 * You should have received a copy of the GNU General Public License
>> 17 * along with this program; if not, write to the Free Software
>> 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
>> 19 * MA 02110-1301 USA.
6 */ 20 */
7 21
8 #ifndef _LINUX_I2C_SMBUS_H 22 #ifndef _LINUX_I2C_SMBUS_H
9 #define _LINUX_I2C_SMBUS_H 23 #define _LINUX_I2C_SMBUS_H
10 24
11 #include <linux/i2c.h> 25 #include <linux/i2c.h>
12 #include <linux/spinlock.h> 26 #include <linux/spinlock.h>
13 #include <linux/workqueue.h> 27 #include <linux/workqueue.h>
14 28
15 29
16 /** 30 /**
17 * i2c_smbus_alert_setup - platform data for t 31 * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client
>> 32 * @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0)
>> 33 * triggered
18 * @irq: IRQ number, if the smbus_alert driver 34 * @irq: IRQ number, if the smbus_alert driver should take care of interrupt
19 * handling 35 * handling
20 * 36 *
21 * If irq is not specified, the smbus_alert dr 37 * If irq is not specified, the smbus_alert driver doesn't take care of
22 * interrupt handling. In that case it is up t 38 * interrupt handling. In that case it is up to the I2C bus driver to either
23 * handle the interrupts or to poll for alerts 39 * handle the interrupts or to poll for alerts.
>> 40 *
>> 41 * If irq is specified then it it crucial that alert_edge_triggered is
>> 42 * properly set.
24 */ 43 */
25 struct i2c_smbus_alert_setup { 44 struct i2c_smbus_alert_setup {
>> 45 unsigned int alert_edge_triggered:1;
26 int irq; 46 int irq;
27 }; 47 };
28 48
29 struct i2c_client *i2c_new_smbus_alert_device( !! 49 struct i2c_client *i2c_setup_smbus_alert(struct i2c_adapter *adapter,
30 !! 50 struct i2c_smbus_alert_setup *setup);
31 int i2c_handle_smbus_alert(struct i2c_client * 51 int i2c_handle_smbus_alert(struct i2c_client *ara);
32 <<
33 #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED <<
34 struct i2c_client *i2c_new_slave_host_notify_d <<
35 void i2c_free_slave_host_notify_device(struct <<
36 #else <<
37 static inline struct i2c_client *i2c_new_slave <<
38 { <<
39 return ERR_PTR(-ENOSYS); <<
40 } <<
41 static inline void i2c_free_slave_host_notify_ <<
42 { <<
43 } <<
44 #endif <<
45 <<
46 #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED <<
47 void i2c_register_spd(struct i2c_adapter *adap <<
48 #else <<
49 static inline void i2c_register_spd(struct i2c <<
50 #endif <<
51 52
52 #endif /* _LINUX_I2C_SMBUS_H */ 53 #endif /* _LINUX_I2C_SMBUS_H */
53 54
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