1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * i2c-smbus.h - SMBus extensions to the I2C protocol |
4 | * |
5 | * Copyright (C) 2010-2019 Jean Delvare <jdelvare@suse.de> |
6 | */ |
7 | |
8 | #ifndef _LINUX_I2C_SMBUS_H |
9 | #define _LINUX_I2C_SMBUS_H |
10 | |
11 | #include <linux/i2c.h> |
12 | #include <linux/spinlock.h> |
13 | #include <linux/workqueue.h> |
14 | |
15 | |
16 | /** |
17 | * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client |
18 | * @irq: IRQ number, if the smbus_alert driver should take care of interrupt |
19 | * handling |
20 | * |
21 | * If irq is not specified, the smbus_alert driver doesn't take care of |
22 | * interrupt handling. In that case it is up to the I2C bus driver to either |
23 | * handle the interrupts or to poll for alerts. |
24 | */ |
25 | struct i2c_smbus_alert_setup { |
26 | int irq; |
27 | }; |
28 | |
29 | struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter, |
30 | struct i2c_smbus_alert_setup *setup); |
31 | int i2c_handle_smbus_alert(struct i2c_client *ara); |
32 | |
33 | #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_I2C_SLAVE) |
34 | struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter); |
35 | void i2c_free_slave_host_notify_device(struct i2c_client *client); |
36 | #else |
37 | static inline struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter) |
38 | { |
39 | return ERR_PTR(-ENOSYS); |
40 | } |
41 | static inline void i2c_free_slave_host_notify_device(struct i2c_client *client) |
42 | { |
43 | } |
44 | #endif |
45 | |
46 | #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_DMI) |
47 | void i2c_register_spd(struct i2c_adapter *adap); |
48 | #else |
49 | static inline void i2c_register_spd(struct i2c_adapter *adap) { } |
50 | #endif |
51 | |
52 | #endif /* _LINUX_I2C_SMBUS_H */ |
53 | |