Subject: [PATCH 2/8] arm: mach-armada: add source files

From: [email-masked] (Ben Dooks)
Date: Tue, 15 May 2012 10:54:20 +0100

On 15/05/12 10:27, Andrew Lunn wrote:
>
>> diff --git a/arch/arm/mach-armada/irq.c b/arch/arm/mach-armada/irq.c
>> new file mode 100644
>> index 0000000..7006429
>> --- /dev/null
>> +++ b/arch/arm/mach-armada/irq.c
>> @@ -0,0 +1,116 @@
>> +/*
>> + * Marvall Armada SoC IRQ handling
>> + *
>> + * Copyright (C) 2012 Marvell
>> + *
>> + * Lior Amsalem<[email-masked]>
>> + * Gregory CLEMENT<[email-masked]>
>> + * Thomas Petazzoni<[email-masked]>
>> + *
>> + * 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.
>> + */
>> +
>> +#include<linux/kernel.h>
>> +#include<linux/init.h>
>> +#include<linux/irq.h>
>> +#include<linux/interrupt.h>
>> +#include<linux/io.h>
>> +#include<linux/of_address.h>
>> +#include<linux/of_irq.h>
>> +#include<linux/irqdomain.h>
>> +#include<asm/mach/arch.h>
>> +#include<asm/exception.h>
>> +
>> +/* Interrupt Controller Registers Map */
>> +#define ARMADA_INT_SET_MASK_OFFS             (0xBC)
>> +#define ARMADA_INT_CLEAR_MASK_OFFS           (0xB8)
>> +
>> +#define ARMADA_INT_SET_ENABLE_OFFS           (0xA30)
>> +#define ARMADA_INT_CLEAR_ENABLE_OFFS         (0xA34)
>> +
>> +#define ARMADA_CPU_INTACK_OFFS               (0xB4)
>> +
>> +static void __iomem *per_cpu_int_base;
>> +static void __iomem *main_int_base;
>> +static struct irq_domain *armada_mpic_domain;
>> +
>> +static void armada_irq_mask(struct irq_data *d)
>> +{
>> +	writel(d->irq, per_cpu_int_base + ARMADA_INT_CLEAR_MASK_OFFS);
>> +}
>> +
>> +static void armada_irq_unmask(struct irq_data *d)
>> +{
>> +	writel(d->irq, per_cpu_int_base + ARMADA_INT_SET_MASK_OFFS);
>> +}
>
> All the other orion's use the generic-chip interrupt routines. Can
> this device also use it? It would also allow you to use the generic DT
> bindings.

Possibly, but there'll need to be support for setting interrupt affinity
added at some point, as this is used on multi-core systems.

-- 
Ben Dooks				http://www.codethink.co.uk/
Senior Engineer				Codethink - Providing Genius