used for kernel devices it is used by i2c(8).
This fix the 'error: Device not configured' when i2c(8) tries to reset the
controller, as an example:
# i2c -r
Resetting I2C controller on /dev/iic0: error: Device not configured
For now use conservative settings for default i2c speeds.
MFC after: 1 week
EWOULDBLOCK.
Do not print any message at errors. The errors are properly sent to upper
layers which should be able to deal with it, including printing the errors
when they need to.
The error message was quite annoying while scanning the i2c bus.
MFC after: 1 week
This fix a race where the threads waiting for the bus would wake up early
and still see bus as busy.
While here, give a better description to wmesg for the two use cases we
have (bus and io waiting).
MFC after: 1 week
(7-bit device address << 1), always leaving the room for the read/write bit.
This commit convert ti_i2c and revert r259127 on bcm2835_bsc to make them
compatible with 8-bit addresses. Previous to this commit an i2c device
would have different addresses depending on the controller it was attached
to (by example, when compared to any iicbb(4) based i2c controller), which
was a pretty annoying behavior.
Also, update the PMIC i2c address on beaglebone* DTS files to match the new
address scheme.
Now the userland utilities need to do the correct slave address shifting
(but it is going to work with any i2c controller on the system).
Discussed with: ian
MFC after: 2 weeks
to check the status property in their probe routines.
Simplebus used to only instantiate its children whose status="okay"
but that was improper behavior, fixed in r261352. Now that it doesn't
check anymore and probes all its children; the children all have to
do the check because really only the children know how to properly
interpret their status property strings.
Right now all existing drivers only understand "okay" versus something-
that's-not-okay, so they all use the new ofw_bus_status_okay() helper.
rely only on checking the device unit to indentify the BSC unit we are
attaching to. Make use of the device base address to identify our BSC unit.
Approved by: adrian (mentor)
