From: eric@eukrea.com (Eric Bénard)
To: linux-arm-kernel@lists.infradead.org
Subject: i.MX & IRQF_ONESHOT
Date: Thu, 13 Jan 2011 09:25:19 +0100 [thread overview]
Message-ID: <4D2EB6EF.7030608@eukrea.com> (raw)
Hi,
while testing 2.6.37 on our i.MX27 based board - code in
arch/arm/mach-imx/eukrea_mbimx27-baseboard.c - I noticed the touchscreen
controller (ADS7846) doesn't work anymore.
A few IRQ are generated when probing for the chipset and starting calibration
(usually first point works), then nothing more (even if the IRQ signals is
generated as seen on the scope, the irq count doesn't increase anymore and
stays <= 4 and no data is reported to the input layer).
drivers/input/touchscreen/ads7846.c was switched to threaded IRQ in commit
2991a1ca6e9b13b639a82c0eec0cbc191bf1f42f where was added :
irq_flags |= IRQF_ONESHOT;
Commenting out this line in the ads7846 driver makes it work again.
Am I missing something obvious or is there a reason for IRQF_ONESHOT creating
trouble with gpio irq or SPI on i.MX ?
Thanks
Eric
next reply other threads:[~2011-01-13 8:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-13 8:25 Eric Bénard [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-01-13 9:13 No subject Uwe Kleine-König
2011-01-13 11:12 ` i.MX & IRQF_ONESHOT Nicolas Ferre
2011-01-13 18:15 ` Thomas Gleixner
2011-01-13 21:12 ` Eric Bénard
2011-01-13 21:24 ` Uwe Kleine-König
2011-01-14 7:35 ` Eric Bénard
2011-01-14 10:57 ` Thomas Gleixner
2011-01-14 13:08 ` Uwe Kleine-König
2011-02-02 21:20 ` Uwe Kleine-König
2011-02-02 21:26 ` Eric Bénard
2011-01-14 11:25 ` Nicolas Ferre
2011-01-14 11:47 ` Thomas Gleixner
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