Try request_irq(gpio_to_irq(96), isr, SA_INTERRUPT, "slave",NULL);
Then check /proc/interrupt. ________________________________ From: davinci-linux-open-source-boun...@linux.davincidsp.com [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com] On Behalf Of Prabhaharan R-TLS,Chennai Sent: Tuesday, February 24, 2009 11:26 AM To: davinci-linux-open-source Subject: Davinci DM355 - GPIO Bank 6 Interrupt Importance: High Hello All, I am using DM355 GPIO Bank 6 interrupt for one of the peripheral. We are using the Montavista TI Davinci Linux 2.6.10 version. I was trying to register an interrupt (IRQ = 60 for GPIO Bank 6 and the GPIO used is 96) with Linux. It gave the invalid arguments. Then I did debugging to check which argument is causing an issue. I identified the irq_desc[irq].valid flag is not set and I did the hard coding for setting this flag to 1 for IRQ 60. Then the request_irq API was returning 0. This means that the interrupt is registered. request_irq(IRQ_DM355_GPIOBNK6, isr, SA_INTERRUPT, "slave",NULL); Also, I have configured the following for GPIO 96. The peripheral that we are using will give falling edge interrupt. 1. To configure a GPIO interrupt to occur only on falling edges of the GPIO signal: * Write a logic 1 to the associated bit in SET_FAL_TRIG * Write a logic 1 to the associated bit in CLR_RIS_TRIG 2. BINTEN for Bank 6. 3. Also the PINMUX register were taken care properly. 4. Even, the direction register are set for this GPIO 96. Even though I did all the above settings, the ISR is not getting triggered. I don't know the reason for this issue. Moreover, I measured the IRQ line using CRO. There is a change in the IRQ line. It goes from high to low. Is there something, that the Linux is not processing the interrupt for IRQ 60? If anyone faced similar issue, please provide your valuable comments. Thanks a lot in advance. Regards, Prabhaharan.R DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. -----------------------------------------------------------------------------------------------------------------------
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