Re: [PATCH 5/6] Driver for WM97xx touchscreens in streaming mode on PXA2xx systems

[Marc Kleine-Budde <mkl@pengutronix.de>]

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Mark Brown wrote:
> On Mon, Jan 14, 2008 at 10:56:06AM +0100, Marc Kleine-Budde wrote:
>> reMark Brown wrote:
> 
>>> Cc: Marc Kleine-Budde <mkl@penugtronix.de>
>>                                 ^^
>> it's mkl@pengutronix.de
> 
> Fixed, sorry about that.
> 
>>> +			/* use PEN_DOWN GPIO 13 to assert IRQ on GPIO line 2 */
>>> +			wm->pen_irq = MAINSTONE_AC97_IRQ;
> 
>> I'm missing some kind of abstraction here, what about non mainstone
>> boards with the pen irq wired to some other gpio?
> 
> The driver really isn't intended to cope with them.  As you say, other
> boards may have things wired up differently and therefore require
> different configuration of the wm97xx and other bits of the system.  The
> expectation is that other systems will have their own driver.

What bits have to setup in a different way? Only the stuff in
wm97xx_acc_startup() or other things aswell. An irq can be put as utual
into a device's resouce, Setting up bits may be done like other stuff on
pxa, too. e.g. pxa_set_ohci_info.

> My initial thought is that the most straightforward way of handling this
> would be to rename the driver to mainstone-wm97xx or similar to make it
> clear that the driver is only intended to handle Mainstone as-is.  Does
> that seem reasonable?

With my limited understanding of the pxa-wm97xx.c file, the only board
dependent stuff is done in wm97xx_acc_startup() so a different "driver"
for other boards would result in code duplication.

regards - Marc

-- 
 Marc Kleine-Budde              Phone: +49-231-2826-924
 Pengutronix - Linux Solutions for Science and Industry
 Vertretung West/Dortmund     http://www.pengutronix.de


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