forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*
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* i2c-smbus.h - SMBus extensions to the I2C protocol
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*
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* Copyright (C) 2010 Jean Delvare <jdelvare@suse.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA.
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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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* @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0)
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* triggered
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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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* If irq is specified then it it crucial that alert_edge_triggered is
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* properly set.
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*/
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struct i2c_smbus_alert_setup {
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unsigned int alert_edge_triggered:1;
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int irq;
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};
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struct i2c_client *i2c_setup_smbus_alert(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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/**
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* smbus_host_notify - internal structure used by the Host Notify mechanism.
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* @adapter: the I2C adapter associated with this struct
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* @work: worker used to schedule the IRQ in the slave device
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* @lock: spinlock to check if a notification is already pending
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* @pending: flag set when a notification is pending (any new notification will
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* be rejected if pending is true)
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* @payload: the actual payload of the Host Notify event
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* @addr: the address of the slave device which raised the notification
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*
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* This struct needs to be allocated by i2c_setup_smbus_host_notify() and does
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* not need to be freed. Internally, i2c_setup_smbus_host_notify() uses a
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* managed resource to clean this up when the adapter get released.
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*/
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struct smbus_host_notify {
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struct i2c_adapter *adapter;
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struct work_struct work;
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spinlock_t lock;
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bool pending;
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u16 payload;
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u8 addr;
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};
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struct smbus_host_notify *i2c_setup_smbus_host_notify(struct i2c_adapter *adap);
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int i2c_handle_smbus_host_notify(struct smbus_host_notify *host_notify,
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unsigned short addr, unsigned int data);
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#endif /* _LINUX_I2C_SMBUS_H */
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