diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-01-11 11:30:48 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-01-11 11:30:48 +0000 |
| commit | df846f6abfb419ae53f7b57fa9e79664d3b47e19 (patch) | |
| tree | 00033bed57c26b9a648de233f2ef39e2af6f8ed9 | |
| parent | 2fa17f6cd76868c729fd270c28bbd43a137d834b (diff) | |
Add constants to support block mode. Needed to support SMBus block read
and write.
ok claudio@
| -rw-r--r-- | sys/dev/i2c/i2c_io.h | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/sys/dev/i2c/i2c_io.h b/sys/dev/i2c/i2c_io.h index 8a4aea81e12..65d95329c3e 100644 --- a/sys/dev/i2c/i2c_io.h +++ b/sys/dev/i2c/i2c_io.h @@ -1,5 +1,5 @@ -/* $OpenBSD: i2c_io.h,v 1.1 2004/05/23 17:33:43 grange Exp $ */ -/* $NetBSD: i2c_io.h,v 1.1 2003/09/30 00:35:31 thorpej Exp $ */ +/* $OpenBSD: i2c_io.h,v 1.2 2020/01/11 11:30:47 kettenis Exp $ */ +/* $NetBSD: i2c_io.h,v 1.3 2012/04/22 14:10:36 pgoyette Exp $ */ /* * Copyright (c) 2003 Wasabi Systems, Inc. @@ -45,17 +45,25 @@ typedef uint16_t i2c_addr_t; /* High-level I2C operations. */ +#define I2C_OPMASK_STOP 1 +#define I2C_OPMASK_WRITE 2 +#define I2C_OPMASK_BLKMODE 4 + +#define I2C_OP_STOP_P(x) (((int)(x) & I2C_OPMASK_STOP) != 0) +#define I2C_OP_WRITE_P(x) (((int)(x) & I2C_OPMASK_WRITE) != 0) +#define I2C_OP_READ_P(x) (!I2C_OP_WRITE_P(x)) +#define I2C_OP_BLKMODE_P(x) (((int)(x) & I2C_OPMASK_BLKMODE) != 0) + typedef enum { I2C_OP_READ = 0, - I2C_OP_READ_WITH_STOP = 1, - I2C_OP_WRITE = 2, - I2C_OP_WRITE_WITH_STOP = 3, + I2C_OP_READ_WITH_STOP = I2C_OPMASK_STOP, + I2C_OP_WRITE = I2C_OPMASK_WRITE, + I2C_OP_WRITE_WITH_STOP = I2C_OPMASK_WRITE | I2C_OPMASK_STOP, + I2C_OP_READ_BLOCK = I2C_OPMASK_BLKMODE | I2C_OPMASK_STOP, + I2C_OP_WRITE_BLOCK = I2C_OPMASK_BLKMODE | I2C_OPMASK_WRITE | + I2C_OPMASK_STOP, } i2c_op_t; -#define I2C_OP_READ_P(x) (((int)(x) & 2) == 0) -#define I2C_OP_WRITE_P(x) (! I2C_OP_READ_P(x)) -#define I2C_OP_STOP_P(x) (((int)(x) & 1) != 0) - /* * This structure describes a single I2C control script fragment. * |