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60 lines
1.7 KiB
60 lines
1.7 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* i2c-smbus.h - SMBus extensions to the I2C protocol |
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* |
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* Copyright (C) 2010-2019 Jean Delvare <[email protected]> |
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*/ |
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#ifndef _LINUX_I2C_SMBUS_H |
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#define _LINUX_I2C_SMBUS_H |
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#include <linux/i2c.h> |
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#include <linux/spinlock.h> |
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#include <linux/workqueue.h> |
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/** |
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* i2c_smbus_alert_setup - platform data for the smbus_alert i2c client |
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* @irq: IRQ number, if the smbus_alert driver should take care of interrupt |
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* handling |
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* |
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* If irq is not specified, the smbus_alert driver doesn't take care of |
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* interrupt handling. In that case it is up to the I2C bus driver to either |
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* handle the interrupts or to poll for alerts. |
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*/ |
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struct i2c_smbus_alert_setup { |
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int irq; |
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}; |
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struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter, |
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struct i2c_smbus_alert_setup *setup); |
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int i2c_handle_smbus_alert(struct i2c_client *ara); |
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#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF) |
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int of_i2c_setup_smbus_alert(struct i2c_adapter *adap); |
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#else |
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static inline int of_i2c_setup_smbus_alert(struct i2c_adapter *adap) |
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{ |
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return 0; |
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} |
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#endif |
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#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_I2C_SLAVE) |
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struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter); |
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void i2c_free_slave_host_notify_device(struct i2c_client *client); |
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#else |
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static inline struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter) |
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{ |
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return ERR_PTR(-ENOSYS); |
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} |
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static inline void i2c_free_slave_host_notify_device(struct i2c_client *client) |
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{ |
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} |
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#endif |
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#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_DMI) |
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void i2c_register_spd(struct i2c_adapter *adap); |
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#else |
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static inline void i2c_register_spd(struct i2c_adapter *adap) { } |
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#endif |
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#endif /* _LINUX_I2C_SMBUS_H */
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