diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/cris/include/asm/etraxi2c.h | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/cris/include/asm/etraxi2c.h')
| -rw-r--r-- | kernel/arch/cris/include/asm/etraxi2c.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/kernel/arch/cris/include/asm/etraxi2c.h b/kernel/arch/cris/include/asm/etraxi2c.h new file mode 100644 index 000000000..e369a7620 --- /dev/null +++ b/kernel/arch/cris/include/asm/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 |