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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

i2c-dev.h (1875B)

    

  1. /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
  2. /*
  3.  * i2c-dev.h - I2C bus char device interface
  4.  *
  5.  * Copyright (C) 1995-97 Simon G. Vogl
  6.  * Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl>
  7.  */
  9. #ifndef _LINUX_I2C_DEV_H
  10. #define _LINUX_I2C_DEV_H
  12. #include <linux/types.h>
  15. /* /dev/i2c-X ioctl commands.  The ioctl's parameter is always an
  16.  * unsigned long, except for:
  17.  *	- I2C_FUNCS, takes pointer to an unsigned long
  18.  *	- I2C_RDWR, takes pointer to struct i2c_rdwr_ioctl_data
  19.  *	- I2C_SMBUS, takes pointer to struct i2c_smbus_ioctl_data
  20.  */
  21. #define I2C_RETRIES	0x0701	/* number of times a device address should
  22. 				   be polled when not acknowledging */
  23. #define I2C_TIMEOUT	0x0702	/* set timeout in units of 10 ms */
  25. /* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses
  26.  * are NOT supported! (due to code brokenness)
  27.  */
  28. #define I2C_SLAVE	0x0703	/* Use this slave address */
  29. #define I2C_SLAVE_FORCE	0x0706	/* Use this slave address, even if it
  30. 				   is already in use by a driver! */
  31. #define I2C_TENBIT	0x0704	/* 0 for 7 bit addrs, != 0 for 10 bit */
  33. #define I2C_FUNCS	0x0705	/* Get the adapter functionality mask */
  35. #define I2C_RDWR	0x0707	/* Combined R/W transfer (one STOP only) */
  37. #define I2C_PEC		0x0708	/* != 0 to use PEC with SMBus */
  38. #define I2C_SMBUS	0x0720	/* SMBus transfer */
  41. /* This is the structure as used in the I2C_SMBUS ioctl call */
  42. struct i2c_smbus_ioctl_data {
  43. 	__u8 read_write;
  44. 	__u8 command;
  45. 	__u32 size;
  46. 	union i2c_smbus_data *data;
  47. };
  49. /* This is the structure as used in the I2C_RDWR ioctl call */
  50. struct i2c_rdwr_ioctl_data {
  51. 	struct i2c_msg *msgs;	/* pointers to i2c_msgs */
  52. 	__u32 nmsgs;			/* number of i2c_msgs */
  53. };
  55. #define  I2C_RDWR_IOCTL_MAX_MSGS	42
  56. /* Originally defined with a typo, keep it for compatibility */
  57. #define  I2C_RDRW_IOCTL_MAX_MSGS	I2C_RDWR_IOCTL_MAX_MSGS
  60. #endif /* _LINUX_I2C_DEV_H */