forked from mirrors/linux
766644d2df
Add a empty irq_of_parse_and_map() function that returns 0 for non-dt builds and avoid having #ifdef CONFIG_OF around all calls to irq_of_parse_and_map(). In addition to that, the irq_of_parse_and_map() function declaration is made available only if CONFIG_OF_IRQ is defined, which is the same config option that makes the irq_of_parse_and_map() function definition available. While at it, fix a typo as well. Changes since v1: - Moved irq_of_parse_and_map() function declaration under CONFIG_OF_IRQ. - Fix a minor typo in comments. Suggested-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Rob Herring <rob.herring@calxeda.com> [grant.likely: fix bug causing SPARC to break] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
#ifndef __OF_IRQ_H
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#define __OF_IRQ_H
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#if defined(CONFIG_OF)
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struct of_irq;
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/irq.h>
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#include <linux/irqdomain.h>
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#include <linux/ioport.h>
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#include <linux/of.h>
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/*
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* irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
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* implements it differently. However, the prototype is the same for all,
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* so declare it here regardless of the CONFIG_OF_IRQ setting.
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*/
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extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
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#if defined(CONFIG_OF_IRQ)
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/**
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* of_irq - container for device_node/irq_specifier pair for an irq controller
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* @controller: pointer to interrupt controller device tree node
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* @size: size of interrupt specifier
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* @specifier: array of cells @size long specifing the specific interrupt
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*
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* This structure is returned when an interrupt is mapped. The controller
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* field needs to be put() after use
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*/
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#define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */
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struct of_irq {
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struct device_node *controller; /* Interrupt controller node */
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u32 size; /* Specifier size */
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u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
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};
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typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
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/*
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* Workarounds only applied to 32bit powermac machines
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*/
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#define OF_IMAP_OLDWORLD_MAC 0x00000001
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#define OF_IMAP_NO_PHANDLE 0x00000002
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#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
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extern unsigned int of_irq_workarounds;
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extern struct device_node *of_irq_dflt_pic;
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extern int of_irq_map_oldworld(struct device_node *device, int index,
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struct of_irq *out_irq);
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#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
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#define of_irq_workarounds (0)
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#define of_irq_dflt_pic (NULL)
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static inline int of_irq_map_oldworld(struct device_node *device, int index,
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struct of_irq *out_irq)
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{
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return -EINVAL;
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}
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#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
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extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
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u32 ointsize, const u32 *addr,
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struct of_irq *out_irq);
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extern int of_irq_map_one(struct device_node *device, int index,
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struct of_irq *out_irq);
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extern unsigned int irq_create_of_mapping(struct device_node *controller,
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const u32 *intspec,
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unsigned int intsize);
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extern int of_irq_to_resource(struct device_node *dev, int index,
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struct resource *r);
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extern int of_irq_count(struct device_node *dev);
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extern int of_irq_to_resource_table(struct device_node *dev,
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struct resource *res, int nr_irqs);
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extern struct device_node *of_irq_find_parent(struct device_node *child);
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extern void of_irq_init(const struct of_device_id *matches);
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#endif /* CONFIG_OF_IRQ */
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#else /* !CONFIG_OF */
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static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
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int index)
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{
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return 0;
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}
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#endif /* !CONFIG_OF */
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#endif /* __OF_IRQ_H */
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