From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-cris/etraxi2c.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/asm-cris/etraxi2c.h (limited to 'include/asm-cris/etraxi2c.h') diff --git a/include/asm-cris/etraxi2c.h b/include/asm-cris/etraxi2c.h new file mode 100644 index 000000000000..e369a7620893 --- /dev/null +++ b/include/asm-cris/etraxi2c.h @@ -0,0 +1,36 @@ +/* $Id: etraxi2c.h,v 1.1 2001/01/18 15:49:57 bjornw Exp $ */ + +#ifndef _LINUX_ETRAXI2C_H +#define _LINUX_ETRAXI2C_H + +/* etraxi2c _IOC_TYPE, bits 8 to 15 in ioctl cmd */ + +#define ETRAXI2C_IOCTYPE 44 + +/* supported ioctl _IOC_NR's */ + +/* in write operations, the argument contains both i2c + * slave, register and value. + */ + +#define I2C_WRITEARG(slave, reg, value) (((slave) << 16) | ((reg) << 8) | (value)) +#define I2C_READARG(slave, reg) (((slave) << 16) | ((reg) << 8)) + +#define I2C_ARGSLAVE(arg) ((arg) >> 16) +#define I2C_ARGREG(arg) (((arg) >> 8) & 0xff) +#define I2C_ARGVALUE(arg) ((arg) & 0xff) + +#define I2C_WRITEREG 0x1 /* write to an i2c register */ +#define I2C_READREG 0x2 /* read from an i2c register */ + +/* +EXAMPLE usage: + + i2c_arg = I2C_WRITEARG(STA013_WRITE_ADDR, reg, val); + ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_WRITEREG), i2c_arg); + + i2c_arg = I2C_READARG(STA013_READ_ADDR, reg); + val = ioctl(fd, _IO(ETRAXI2C_IOCTYPE, I2C_READREG), i2c_arg); + +*/ +#endif -- cgit v1.2.3