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Diffstat (limited to 'include/linux/i2c-smbus.h')
| -rw-r--r-- | include/linux/i2c-smbus.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/linux/i2c-smbus.h b/include/linux/i2c-smbus.h new file mode 100644 index 000000000..ced1c6ead --- /dev/null +++ b/include/linux/i2c-smbus.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * i2c-smbus.h - SMBus extensions to the I2C protocol + * + * Copyright (C) 2010-2019 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 + * @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. + */ +struct i2c_smbus_alert_setup { + int irq; +}; + +struct i2c_client *i2c_new_smbus_alert_device(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_I2C_SLAVE) +struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter); +void i2c_free_slave_host_notify_device(struct i2c_client *client); +#else +static inline struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter) +{ + return ERR_PTR(-ENOSYS); +} +static inline void i2c_free_slave_host_notify_device(struct i2c_client *client) +{ +} +#endif + +#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_DMI) +void i2c_register_spd(struct i2c_adapter *adap); +#else +static inline void i2c_register_spd(struct i2c_adapter *adap) { } +#endif + +#endif /* _LINUX_I2C_SMBUS_H */ |