Handling interrupts in spidev

[Amit Mahadik]

Hi All,
             I am using versatile express board and have tried to allocate four interrupts (36 to 39) using IRQF_SHARED and IRQF_TRIGGER_HIGH flags in spidev.c file. However only INT 38 and 39 gets registered. For 36 and 37 I am getting errno 16 (Resource busy). In versatile express motherboard.h file INT 36 is RTC and 37 is UART0.Please help

Regards,
Amit.




On Saturday, 15 February 2014 12:21 AM, Anand Moon <moon.linux at yahoo.com> wrote:
 
Hi All,

You can use netlink socket to send data from kernel to user space.

-Anand Moon



On Friday, February 14, 2014 11:51 AM, Nilesh Bacchewar <b.nilesh2005 at gmail.com> wrote:
 
you can use Asynchronous notification  , FASYNC .
 
http://www.makelinux.net/ldd3/chp-6-sect-4
 
Regards,
Nilesh



On Tue, Jan 28, 2014 at 9:47 PM, Vishwanath Govind <vishwanath.govind at gmail.com> wrote:

You can implement irq handler in spi driver itself. SPI specific platform data can pass it from board file.
>Regards
>Vishwa 
>
>
>
>
>On Tue, Jan 28, 2014 at 9:24 PM, Richard Weinberger <richard at nod.at> wrote:
>
>Am 28.01.2014 15:12, schrieb 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.
>>
>>Never do any programming in the board file.
>>The purpose if the board file it describing the hardware.
>>Please note, board files go away, device tree is the way to go.
>>
>>
>>Thanks,
>>//richard
>>
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