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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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i2c-dev.h - i2c-bus driver, char device interface
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Copyright (C) 1995-97 Simon G. Vogl
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Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl>
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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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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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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 _UAPI_LINUX_I2C_DEV_H
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#define _UAPI_LINUX_I2C_DEV_H
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#include <linux/types.h>
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#include <linux/compiler.h>
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/* /dev/i2c-X ioctl commands. The ioctl's parameter is always an
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* unsigned long, except for:
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* - I2C_FUNCS, takes pointer to an unsigned long
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* - I2C_RDWR, takes pointer to struct i2c_rdwr_ioctl_data
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* - I2C_SMBUS, takes pointer to struct i2c_smbus_ioctl_data
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*/
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#define I2C_RETRIES 0x0701 /* number of times a device address should
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be polled when not acknowledging */
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#define I2C_TIMEOUT 0x0702 /* set timeout in units of 10 ms */
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/* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses
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* are NOT supported! (due to code brokenness)
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*/
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#define I2C_SLAVE 0x0703 /* Use this slave address */
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#define I2C_SLAVE_FORCE 0x0706 /* Use this slave address, even if it
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is already in use by a driver! */
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#define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */
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#define I2C_FUNCS 0x0705 /* Get the adapter functionality mask */
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#define I2C_RDWR 0x0707 /* Combined R/W transfer (one STOP only) */
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#define I2C_PEC 0x0708 /* != 0 to use PEC with SMBus */
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#define I2C_SMBUS 0x0720 /* SMBus transfer */
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/* This is the structure as used in the I2C_SMBUS ioctl call */
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struct i2c_smbus_ioctl_data {
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__u8 read_write;
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__u8 command;
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__u32 size;
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union i2c_smbus_data __user *data;
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};
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/* This is the structure as used in the I2C_RDWR ioctl call */
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struct i2c_rdwr_ioctl_data {
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struct i2c_msg __user *msgs; /* pointers to i2c_msgs */
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__u32 nmsgs; /* number of i2c_msgs */
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};
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#define I2C_RDWR_IOCTL_MAX_MSGS 42
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/* Originally defined with a typo, keep it for compatibility */
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#define I2C_RDRW_IOCTL_MAX_MSGS I2C_RDWR_IOCTL_MAX_MSGS
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#endif /* _UAPI_LINUX_I2C_DEV_H */
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