From: Julia Lawall <Julia.Lawall@xxxxxxx>
This patch introduces some macros for describing how an i2c_msg is being
initialized. There are three macros: I2C_MSG_READ, for a read message,
I2C_MSG_WRITE, for a write message, and I2C_MSG_OP, for some other kind of
message, which is expected to be very rarely used.
Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>
---
include/linux/i2c.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 94aed0c..885ebea 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -556,6 +556,12 @@ struct i2c_msg {
__u8 *buf; /* pointer to msg data */
};
+#define I2C_MSG_OP(_addr, _buf, _len, _flags) \
+ { .addr = _addr, .buf = _buf, .len = _len, .flags = _flags }
+
+#define I2C_MSG_WRITE(addr, buf, len) I2C_MSG_OP(addr, buf, len, 0)
+#define I2C_MSG_READ(addr, buf, len) I2C_MSG_OP(addr, buf, len, I2C_M_RD)
+
/* To determine what functionality is present */
#define I2C_FUNC_I2C 0x00000001
--
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