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[Ltib] RE: Query on setting GPIO in IMX51 EVK board
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From: |
H Hartley Sweeten |
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Subject: |
[Ltib] RE: Query on setting GPIO in IMX51 EVK board |
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Date: |
Wed, 10 Nov 2010 12:35:44 -0600 |
On Tuesday, November 09, 2010 10:31 PM, address@hidden wrote:
>
> I am developing linux kernel driver for I2c sensor chip. In addition to I2C
> interface, the sensor device has GPIO interface.
>
> I would like to know how to set/get GPIO bit from the application and from
> the driver in imx51 platform.
Your kernel driver should expose the GPIOs using the gpiolib API. Then you
can use them from userspace and in the kernel using the standard gpiolib API
calls.
Take a look at Documentation/gpio and in drivers/gpio for more information.
Regards,
Hartley