AM335X GPIO INTERRUPT 96

user4188233

HI,

I want to use the GPIO interrupt. My GPIO number is gpio0_20. When I request the interrupt, I go the following error:

====>drivers/net/ethernet/microchip/enc28j60.c:845
[   57.111461] ====>kernel/irq/manage.c:1359 irq_num:96
[   57.116516] enc28j60 spi1.0: enc28j60: request irq 65 failed (ret = -22)
[   57.123375] enc28j60: probe of spi1.0 failed with error -22

My code :

ret = request_irq(96,enc28j60_irq,IRQF_SHARED,DRV_NAME, priv);

I have search the debug information and I can not found the 96 interrupt is used by the other module. Please help me ,many thanks !

over 9 years ago

0 Ivan Matrakov over 9 years ago

TI__Expert 4475 points

Hi,

If you not use the gpio96 in any other places why do you use IRQF_SHARED flag. To be sure that this irq 96 is not used from the other driver of the system could you execute free_irq(96, 0) just before request_irq(...). And see if the priv parameter is correct. BTW which SDK do you use 6 or 7?

BR
Ivan

0 user4188233 over 9 years ago in reply to Ivan Matrakov

Prodigy 80 points

Hi ,

Thank you . I have build my driver based on the GPIO device driver. It works now .

0 Sergey Davydov over 9 years ago in reply to user4188233

Prodigy 10 points

Hi user4188233,

Can you please tell me what you mean by "GPIO device driver"??? I am trying to enable GPIO interrupt on am335x evmsk using DTS for my driver with no success.

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AM335X GPIO INTERRUPT 96