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16216333 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
b5527a77 JD |
2 | /* |
3 | * i2c-smbus.h - SMBus extensions to the I2C protocol | |
4 | * | |
5ace6085 | 5 | * Copyright (C) 2010-2019 Jean Delvare <jdelvare@suse.de> |
b5527a77 JD |
6 | */ |
7 | ||
8 | #ifndef _LINUX_I2C_SMBUS_H | |
9 | #define _LINUX_I2C_SMBUS_H | |
10 | ||
11 | #include <linux/i2c.h> | |
e456cd37 BT |
12 | #include <linux/spinlock.h> |
13 | #include <linux/workqueue.h> | |
b5527a77 JD |
14 | |
15 | ||
16 | /** | |
17 | * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client | |
b5527a77 JD |
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. | |
b5527a77 JD |
24 | */ |
25 | struct i2c_smbus_alert_setup { | |
b5527a77 JD |
26 | int irq; |
27 | }; | |
28 | ||
ed680522 WS |
29 | struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter, |
30 | struct i2c_smbus_alert_setup *setup); | |
b5527a77 JD |
31 | int i2c_handle_smbus_alert(struct i2c_client *ara); |
32 | ||
69d17246 PR |
33 | #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF) |
34 | int of_i2c_setup_smbus_alert(struct i2c_adapter *adap); | |
35 | #else | |
36 | static inline int of_i2c_setup_smbus_alert(struct i2c_adapter *adap) | |
37 | { | |
38 | return 0; | |
39 | } | |
40 | #endif | |
2a71593d AV |
41 | #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_I2C_SLAVE) |
42 | struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter); | |
43 | void i2c_free_slave_host_notify_device(struct i2c_client *client); | |
44 | #else | |
45 | static inline struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter) | |
46 | { | |
47 | return ERR_PTR(-ENOSYS); | |
48 | } | |
49 | static inline void i2c_free_slave_host_notify_device(struct i2c_client *client) | |
50 | { | |
51 | } | |
52 | #endif | |
69d17246 | 53 | |
5ace6085 JD |
54 | #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_DMI) |
55 | void i2c_register_spd(struct i2c_adapter *adap); | |
56 | #else | |
57 | static inline void i2c_register_spd(struct i2c_adapter *adap) { } | |
58 | #endif | |
59 | ||
b5527a77 | 60 | #endif /* _LINUX_I2C_SMBUS_H */ |