[PATCH] irqchip: add support for Marvell Orion SoCs

[Sebastian Hesselbarth]

On 05/02/13 20:45, Russell King - ARM Linux wrote:
> On Thu, May 02, 2013 at 08:33:48PM +0200, Sebastian Hesselbarth wrote:
>> On 05/02/2013 08:25 PM, Sebastian Hesselbarth wrote:
>>> This patch adds an irqchip driver for the main interrupt controller found
>>> on Marvell Orion SoCs (Kirkwood, Dove, Orion5x, Discovery Innovation).
>>> Corresponding device tree documentation is also added.
>>>
>>> Signed-off-by: Sebastian Hesselbarth<sebastian.hesselbarth at gmail.com>
>>> ---
>>> Note: This patch triggers a checkpatch warning for
>>>     WARNING: Avoid CamelCase:<handle_IRQ>
>>>
>> [...]
>>> diff --git a/include/linux/irqchip/orion.h b/include/linux/irqchip/orion.h
>>> new file mode 100644
>>> index 0000000..04f7bab
>>> --- /dev/null
>>> +++ b/include/linux/irqchip/orion.h
>>> @@ -0,0 +1,18 @@
>>> +/*
>>> + * Marvell Orion SoCs IRQ chip driver header.
>>> + *
>>> + * Sebastian Hesselbarth<sebastian.hesselbarth at gmail.com>
>>> + *
>>> + * This file is licensed under the terms of the GNU General Public
>>> + * License version 2.  This program is licensed "as is" without any
>>> + * warranty of any kind, whether express or implied.
>>> + */
>>> +
>>> +#ifndef __LINUX_IRQCHIP_ORION_H
>>> +#define __LINUX_IRQCHIP_ORION_H
>>> +
>>> +#include<asm/exception.h>
>>
>> First review by myself. The above include is a left-over and
>> will be removed in a v2.
>
> You still need your first level IRQ handlers marked with __exception_irq_entry
> which is defined in the above file.
>

Russell,

I know and it is marked with __exception_irq_entry. The above is in
include/linux/irqchip/orion.h and only used for .init_irq in machine
descriptor later.

The irq handler is never exposed to the board file itself, but set
within orion_init_irq. This approach has been taked by
irqchip/irq-gic.c and irqchip/irq-vic.c rather than adding
.handle_irq to the machine descriptor.

Sebastian