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author | root <root@artemis.panaceas.org> | 2015-12-25 04:40:36 +0000 |
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committer | root <root@artemis.panaceas.org> | 2015-12-25 04:40:36 +0000 |
commit | 849369d6c66d3054688672f97d31fceb8e8230fb (patch) | |
tree | 6135abc790ca67dedbe07c39806591e70eda81ce /arch/arm/plat-orion/irq.c | |
download | linux-3.0.35-kobo-849369d6c66d3054688672f97d31fceb8e8230fb.tar.gz linux-3.0.35-kobo-849369d6c66d3054688672f97d31fceb8e8230fb.tar.bz2 linux-3.0.35-kobo-849369d6c66d3054688672f97d31fceb8e8230fb.zip |
initial_commit
Diffstat (limited to 'arch/arm/plat-orion/irq.c')
-rw-r--r-- | arch/arm/plat-orion/irq.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/plat-orion/irq.c b/arch/arm/plat-orion/irq.c new file mode 100644 index 00000000..2d5b9c1e --- /dev/null +++ b/arch/arm/plat-orion/irq.c @@ -0,0 +1,34 @@ +/* + * arch/arm/plat-orion/irq.c + * + * Marvell Orion SoC IRQ handling. + * + * 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/io.h> +#include <plat/irq.h> + +void __init orion_irq_init(unsigned int irq_start, void __iomem *maskaddr) +{ + struct irq_chip_generic *gc; + struct irq_chip_type *ct; + + /* + * Mask all interrupts initially. + */ + writel(0, maskaddr); + + gc = irq_alloc_generic_chip("orion_irq", 1, irq_start, maskaddr, + handle_level_irq); + ct = gc->chip_types; + ct->chip.irq_mask = irq_gc_mask_clr_bit; + ct->chip.irq_unmask = irq_gc_mask_set_bit; + irq_setup_generic_chip(gc, IRQ_MSK(32), IRQ_GC_INIT_MASK_CACHE, + IRQ_NOREQUEST, IRQ_LEVEL | IRQ_NOPROBE); +} |