diff options
Diffstat (limited to 'sys/dev/iicbus/iiconf.h')
| -rw-r--r-- | sys/dev/iicbus/iiconf.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sys/dev/iicbus/iiconf.h b/sys/dev/iicbus/iiconf.h index 092ba8d..aca0137 100644 --- a/sys/dev/iicbus/iiconf.h +++ b/sys/dev/iicbus/iiconf.h @@ -43,6 +43,7 @@ #define IIC_NOINTR 0 #define IIC_WAIT 0x1 #define IIC_INTR 0x2 +#define IIC_INTRWAIT (IIC_INTR | IIC_WAIT) /* * i2c modes @@ -82,16 +83,22 @@ * adapter layer errors */ #define IIC_NOERR 0x0 /* no error occured */ -#define IIC_EBUSERR 0x1 /* bus error */ +#define IIC_EBUSERR 0x1 /* bus error (hardware not in expected state) */ #define IIC_ENOACK 0x2 /* ack not received until timeout */ #define IIC_ETIMEOUT 0x3 /* timeout */ -#define IIC_EBUSBSY 0x4 /* bus busy */ +#define IIC_EBUSBSY 0x4 /* bus busy (reserved by another client) */ #define IIC_ESTATUS 0x5 /* status error */ #define IIC_EUNDERFLOW 0x6 /* slave ready for more data */ #define IIC_EOVERFLOW 0x7 /* too much data */ #define IIC_ENOTSUPP 0x8 /* request not supported */ #define IIC_ENOADDR 0x9 /* no address assigned to the interface */ +#define IIC_ERESOURCE 0xa /* resources (memory, whatever) unavailable */ +/* + * Note that all iicbus functions return IIC_Exxxxx status values, + * except iic2errno() (obviously) and iicbus_started() (returns bool). + */ +extern int iic2errno(int); extern int iicbus_request_bus(device_t, device_t, int); extern int iicbus_release_bus(device_t, device_t); extern device_t iicbus_alloc_bus(device_t); |
