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b2f579b58e
Add irq fixup infrastructure to handle IP blocks connected to shared irqs that are left in an unknown state when booting the kernel. In this case the IP block which has not masked its interrupt and has no driver loaded (either because it is not compiled or because it is not loaded yet) might generate spurious interrupts when another IP block request the shared irq. A good example of this case is the RTC block on which register configs are kept even after a shutdown (if a proper VDDcore is supplied), and thus might generate spurious interrupts when the platform is switched on. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Link: https://lkml.kernel.org/r/1405016741-2407-2-git-send-email-boris.brezillon@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/*
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* Atmel AT91 common AIC (Advanced Interrupt Controller) header file
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*
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* Copyright (C) 2004 SAN People
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* Copyright (C) 2004 ATMEL
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* Copyright (C) Rick Bronson
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* Copyright (C) 2014 Free Electrons
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*
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* Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef __IRQ_ATMEL_AIC_COMMON_H
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#define __IRQ_ATMEL_AIC_COMMON_H
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int aic_common_set_type(struct irq_data *d, unsigned type, unsigned *val);
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int aic_common_set_priority(int priority, unsigned *val);
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int aic_common_irq_domain_xlate(struct irq_domain *d,
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struct device_node *ctrlr,
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const u32 *intspec,
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unsigned int intsize,
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irq_hw_number_t *out_hwirq,
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unsigned int *out_type);
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struct irq_domain *__init aic_common_of_init(struct device_node *node,
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const struct irq_domain_ops *ops,
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const char *name, int nirqs);
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void __init aic_common_irq_fixup(const struct of_device_id *matches);
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#endif /* __IRQ_ATMEL_AIC_COMMON_H */
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