Re: request_irq fails to get interrupt 12

[Benjamin Herrenschmidt]

On Mon, 2007-10-22 at 13:55 -0600, Alan Bennett wrote:
> Ok, so what does it take to expose an interrupt vector on a pq2 PIC??
> -Alan

Also, if it's the default PIC or if you happen to have the PIC struct
irq_host pointer at hand, a quickish way for internal device interrupts
is to directly call irq_create_mapping() though using the device-tree is
nicer.

Ben.

> Current:
> /
>   localbus{
> ...
>  fundevice1 {
>  interrupts = ;
>  interrupt-parent = <&PIC>;
>  };
>   ...
>[EMAIL PROTECTED] {
>   PIC: [EMAIL PROTECTED] {
>   #interrupt-cells = <2>;
>   interrupt-controller;
>   reg = <10c00 80>;
>   compatible = "fsl,mpc8248-pic", "fsl,pq2-pic";
> };
> Is the above device tree enough on its own?
> Do I have to write some platform code beyond:
>   static void __init ep8248_pic_init(void)
>   {
>   struct device_node *np = of_find_compatible_node(NULL,   NULL, 
> "fsl,pq2-pic");
>   if (!np) {
>   printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
>   return;
>   }
> 
>   cpm2_pic_init(np);
>   of_node_put(np);
> }
> 
> -Alan
> 
> Hello,
> 
> > Freescale experts.  Why on earth can't I request the IRQ for Timer1?
> 
> Please consule my question on [1] and the answers.
> 
> [1] http://ozlabs.org/pipermail/linuxppc-dev/2007-September/042061.html
> 
> bye
> Silvio Fricke
> 
> --
> -- S. Fricke - MAILTO:[EMAIL PROTECTED] --
>Diplom-Informatiker (FH)
>Linux-Entwicklung
> 
> ___
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev

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Re: request_irq fails to get interrupt 12

[Alan Bennett]

Ok, so what does it take to expose an interrupt vector on a pq2 PIC??
-Alan

Current:
/
  localbus{
...
   fundevice1 {
   interrupts = ;
   interrupt-parent = <&PIC>;
   };
  ...
   [EMAIL PROTECTED] {
  PIC: [EMAIL PROTECTED] {
  #interrupt-cells = <2>;
  interrupt-controller;
  reg = <10c00 80>;
  compatible = "fsl,mpc8248-pic", "fsl,pq2-pic";
};
Is the above device tree enough on its own?
Do I have to write some platform code beyond:
  static void __init ep8248_pic_init(void)
  {
struct device_node *np = of_find_compatible_node(NULL,   NULL, 
"fsl,pq2-pic");
if (!np) {
printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
return;
}

cpm2_pic_init(np);
of_node_put(np);
}

-Alan

Hello,

> Freescale experts.  Why on earth can't I request the IRQ for Timer1?

Please consule my question on [1] and the answers.

[1] http://ozlabs.org/pipermail/linuxppc-dev/2007-September/042061.html

bye
Silvio Fricke

--
-- S. Fricke - MAILTO:[EMAIL PROTECTED] --
   Diplom-Informatiker (FH)
   Linux-Entwicklung

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Re: request_irq fails to get interrupt 12

[S. Fricke]

Hello,

> Freescale experts.  Why on earth can't I request the IRQ for Timer1?

Please consule my question on [1] and the answers.

[1] http://ozlabs.org/pipermail/linuxppc-dev/2007-September/042061.html

bye
Silvio Fricke

-- 
-- S. Fricke - MAILTO:[EMAIL PROTECTED] --
   Diplom-Informatiker (FH)
   Linux-Entwicklung




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