Re: [spi-devel-general] Re: question on spi_bitbang

[Kumar Gala <galak@kernel.crashing.org>]

On Mar 31, 2006, at 3:15 PM, David Brownell wrote:

> On Friday 31 March 2006 12:52 pm, Kumar Gala wrote:
>
>> What I'm looking at is the following:
>>
>> * use spi_bitbang_setup() as is
>> * have my chipselect do:
>> 	if (BITBANG_CS_INACTIVE)
>> 		deassert GPIO pin for CS
>> 	else
>> 		set HW mode register (polarity, phase, bit length)
>> 		assert GPIO pin for CS
>> * setup_transfer()
>> 	* set HW mode register (bit length)
>> 	* call bitbang_setup_transfer()
>
> And export bitbang_setup_transfer()?  I guess that makes sense,
> but you should probably rename it then to match the convention for
> the other exported symbols.
>
> Once that's all working, please submit the relevant patch.

Will do.

So I give a new question.  Any issue with adding a rx & tx completion  
to spi_bitbang?  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().

- kumar