On Mar 31, 2006, at 4:20 PM, David Brownell wrote:
On Friday 31 March 2006 2:11 pm, Kumar Gala wrote:
So I give a new question. Any issue with adding a rx & tx completion
to spi_bitbang?
What do you mean?
In my HW I get an interrupt when the transmitter is
done transmitting and one when the receiver is done receiving. I
need some way to synchronize and wait for both events to occur before
continuing on in txrx_word().
You can't return from txrx_word() before the RX event, since the
return value is the word that was shifted in. So if you use IRQs
to synchronize there (rather than polling a status register), all
that would be internal to your code.
Your right, I just put this in my struct that wraps spi_bitbang.
It's too bad we dont have a better solution for spi_bitbang having to
be first.
I've got a working driver w/o using the setup_transfer() mods, I'll
look at fixing that up next.
- kumar
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
