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authorJesper Nilsson <jesper.nilsson@axis.com>2008-10-21 17:45:58 +0200
committerJesper Nilsson <jesper.nilsson@axis.com>2008-10-29 17:29:44 +0100
commit556dcee7b829e5c350c3ffdbdb87a8b15aa3c5d3 (patch)
tree26485b0d92eedcba6c0c96d4069469041aaf7106 /arch/cris/include/asm/etraxi2c.h
parent242bfafc8e42da4697c1e2dea108049d14dbac4b (diff)
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[CRIS] Move header files from include to arch/cris/include.
Change all users of header files to correct path. Remove some unneeded headers for arch-v32. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Diffstat (limited to 'arch/cris/include/asm/etraxi2c.h')
-rw-r--r--arch/cris/include/asm/etraxi2c.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/cris/include/asm/etraxi2c.h b/arch/cris/include/asm/etraxi2c.h
new file mode 100644
index 00000000000..e369a762089
--- /dev/null
+++ b/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