Handling interrupts in spidev

[Amit Mahadik]

Thanks Richard. One more question. If I register an SPI irq  struct spi_board_info spi_board_info[] structure in machine board.c file; then the request irq api and irq handler should be written in board.c file or in the spidev driver.

Regards,
Amit.



On Monday, 27 January 2014 2:54 PM, Richard Weinberger <richard at nod.at> wrote:
 
Am 27.01.2014 10:21, schrieb Amit Mahadik:
> Thanks for your input. But I dont want to block the read call. Also I dont want to miss the interrupts.

Look how other drivers/programs deal with that...

Thanks,
//richard

> Regards,
> Amit.
> 
> 
> On Monday, 27 January 2014 12:22 PM, Richard Weinberger <richard at nod.at> wrote:
> Am 27.01.2014 06:37, schrieb Amit Mahadik:
>> Thanks for the reply Richard.
>>        The interrupt is not a GPIO  pin. I have read something about UIO (userspace I/O).
>> Also, I want the operation to be asynchronous. Any pointer to such mechanism will be very helpful.
> 
> Using UIO you can also catch an interrupt in userspace.
> You can have a read() which blocks till data is available.
> 
> 
> Thanks,
> //richard
> 
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