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Submitted by: Nicolas Souchu <nsouch@freebsd.org>

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Updated to support bt848 driver and MSP3400 audio chip.
This adds changes made in 1.4.2.1 and 1.4.2.2 from RELENG_3
This commit is contained in:
Roger Hardiman 1999-01-28 15:59:15 +00:00
parent f8f3b24aa2
commit 84a3aec329
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=43347
1 changed files with 50 additions and 1 deletions
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51
sys/dev/iicbus/iiconf.c
View file

@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: iiconf.c,v 1.3 1998/11/22 22:01:42 nsouch Exp $
* $Id: iiconf.c,v 1.4 1999/01/09 18:08:24 nsouch Exp $
*
*/
#include <sys/param.h>
@ -195,6 +195,28 @@ iicbus_start(device_t bus, u_char slave, int timeout)
return (error);
}
/*
* iicbus_repeated_start()
*
* Send start condition to the slave addressed by 'slave'
*/
int
iicbus_repeated_start(device_t bus, u_char slave, int timeout)
{
struct iicbus_softc *sc = (struct iicbus_softc *)device_get_softc(bus);
int error = 0;
if (!sc->started)
return (EINVAL); /* bus should have been already started */
if (!(error = IICBUS_START(device_get_parent(bus), slave, timeout)))
sc->started = slave;
else
sc->started = 0;
return (error);
}
/*
* iicbus_stop()
*
@ -253,6 +275,33 @@ iicbus_read(device_t bus, char *buf, int len, int *read, int last, int delay)
return (IICBUS_READ(device_get_parent(bus), buf, len, read, last, delay));
}
/*
* iicbus_write_byte()
*
* Write a byte to the slave previously started by iicbus_start() call
*/
int
iicbus_write_byte(device_t bus, char byte, int timeout)
{
char data = byte;
int sent;
return (iicbus_write(bus, &data, 1, &sent, timeout));
}
/*
* iicbus_read_byte()
*
* Read a byte from the slave previously started by iicbus_start() call
*/
int
iicbus_read_byte(device_t bus, char *byte, int timeout)
{
int read;
return (iicbus_read(bus, byte, 1, &read, IIC_LAST_READ, timeout));
}
/*
* iicbus_block_write()
*