gpio irqs broken on imx27 with dt
Uwe Kleine-König
u.kleine-koenig at pengutronix.de
Fri Apr 27 08:50:48 EDT 2012
Hello,
I experience problems on using gpio irqs on an imx27 based machine
booting with dt.
I think one problem is:
if (mxc_gpio_hwtype == IMX21_GPIO) {
/* setup one handler for all GPIO interrupts */
if (pdev->id == 0)
irq_set_chained_handler(port->irq,
mx2_gpio_irq_handler);
} ...
because the inner if doesn't trigger as dt-created gpio devices have all
pdev->id == -1.
I havn't looked deeper into it yet, but I think another problem is that
gpios don't start at 0 and so the usual
#define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
doesn't work either (which might be expected, but doesn't necessarily
needs to fail?!). (You could argue I shouldn't hardcode gpio numbers any
more, but as not all device drivers are oftree aware yet I need to get
of the ground somehow.)
I'm leaving for the weekend now, so just wanted you to inform that there
is a problem. Shawn, maybe you have an idea?
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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