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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2012-07-24 14:13:59 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2012-07-24 14:13:59 +0200 |
| commit | d47726c52122d64253ae56e0fafdb7d0b954e97c (patch) | |
| tree | def321285e0ef7f45772348fe7054942abfc81c8 /include/linux/i2c.h | |
| parent | 68a7602f098c30cc27fbc336db575af63f1be07b (diff) | |
| download | linux-d47726c52122d64253ae56e0fafdb7d0b954e97c.tar.gz linux-d47726c52122d64253ae56e0fafdb7d0b954e97c.tar.bz2 linux-d47726c52122d64253ae56e0fafdb7d0b954e97c.zip | |
i2c: Add SCCB support
SCCB is a serial communication bus developed by Omnivision. Its 2-wire
mode is very similar to SMBus byte data transactions, but requires the
controller to ignore the ACK bit and to insert a stop condition after
each message.
Add a device SCCB flag and a message stop flag to be passed to
controller drivers.
[JD: Kill rogue definition in go7007 driver.]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index ddfa04108baf..1d0fe4877b1f 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -425,6 +425,8 @@ void i2c_unlock_adapter(struct i2c_adapter *); #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ /* Must equal I2C_M_TEN below */ #define I2C_CLIENT_WAKE 0x80 /* for board_info; true iff can wake */ +#define I2C_CLIENT_SCCB 0x9000 /* Use Omnivision SCCB protocol */ + /* Must match I2C_M_STOP|IGNORE_NAK */ /* i2c adapter classes (bitmask) */ #define I2C_CLASS_HWMON (1<<0) /* lm_sensors, ... */ @@ -541,6 +543,7 @@ struct i2c_msg { __u16 flags; #define I2C_M_TEN 0x0010 /* this is a ten bit chip address */ #define I2C_M_RD 0x0001 /* read data, from slave to master */ +#define I2C_M_STOP 0x8000 /* if I2C_FUNC_PROTOCOL_MANGLING */ #define I2C_M_NOSTART 0x4000 /* if I2C_FUNC_NOSTART */ #define I2C_M_REV_DIR_ADDR 0x2000 /* if I2C_FUNC_PROTOCOL_MANGLING */ #define I2C_M_IGNORE_NAK 0x1000 /* if I2C_FUNC_PROTOCOL_MANGLING */ |