On 08/15/2019 02:04 PM, Wolfram Sang wrote:
When the PCF8584 is addressed as slave, this register
must be loaded with the 7-bit I 2 C-bus address to which the
PCF8584 is to respond. During initialization, the own
address register S0' must be written to, regardless
whether it is later used.
I see. It must be written a non-zero value to leave the monitor mode.
But this really needs no callback, we can hardcode any non-zero value.
If slave support is (ever) to be implemented, the own address will come
from the I2C core.
The callback, just like getclock(), is from the existing i2c-algo-pcf, which I don't want to touch right now. So I'm afraid it has to stay, even if it returns a fixed number.
Touching or forking i2c-algo-pcf will be necessary in order to implement IRQ support, if I ever get around to it. I've wasted too much time on debugging IRQ support, and would rather do it another time, if ever ;)
I've left a comment block at the start of i2c-icy.c for anyone interested in the gory details.
If this is okay with you, I'll send another round of patches. :)
Thanks!
Max
