On 04/29/2015 02:26 AM, Mika Westerberg wrote:
On Tue, Apr 28, 2015 at 10:36:48AM -0700, sathyanarayanan kuppuswamy wrote:
This requires that the boot firmware (BIOS/coreboot) configures these pins
correctly (input, etc) before handing over to OS. I've tested this on Intel
Baytrail, Braswell and Skylake based machines where this is true.
Why not configure the GPIO pin as input in the API itself ?
IIRC Octavian tried to do just that but it turned out that some of the
irqchip functions are called with spinlock held, which means you can't
call all gpiod_* functions there (as they might sleep).
Got it. Thanks.
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Sathyanarayanan Kuppuswamy
Android kernel developer
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