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genirq: Mirror irq trigger type bits in irq_data.state

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That's the data structure chip functions get provided. Also allow them
to signal the core code that they updated the flags in irq_data.state
by returning IRQ_SET_MASK_OK_NOCOPY. The default is unchanged.

The type bits should be accessed via:

val = irqd_get_trigger_type(irqdata);
and
irqd_set_trigger_type(irqdata, val);

Coders who access them directly will be tracked down and slapped with
stinking trouts.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2011-02-08 17:28:12 +01:00
parent 2bdd10558c
commit 876dbd4cc1
5 changed files with 87 additions and 20 deletions
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30
kernel/irq/settings.h
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@@ -5,6 +5,7 @@
enum {
_IRQ_DEFAULT_INIT_FLAGS = IRQ_DEFAULT_INIT_FLAGS,
_IRQ_PER_CPU = IRQ_PER_CPU,
_IRQ_LEVEL = IRQ_LEVEL,
_IRQ_NO_BALANCING = IRQ_NO_BALANCING,
_IRQF_MODIFY_MASK = IRQF_MODIFY_MASK,
};
@@ -31,6 +32,8 @@ enum {
#define IRQ_NO_BALANCING GOT_YOU_MORON
#undef IRQ_AFFINITY_SET
#define IRQ_AFFINITY_SET GOT_YOU_MORON
#undef IRQ_LEVEL
#define IRQ_LEVEL GOT_YOU_MORON
#undef IRQF_MODIFY_MASK
#define IRQF_MODIFY_MASK GOT_YOU_MORON
@@ -60,3 +63,30 @@ static inline bool irq_settings_has_no_balance_set(struct irq_desc *desc)
{
return desc->status & _IRQ_NO_BALANCING;
}
static inline u32 irq_settings_get_trigger_mask(struct irq_desc *desc)
{
return desc->status & IRQ_TYPE_SENSE_MASK;
}
static inline void
irq_settings_set_trigger_mask(struct irq_desc *desc, u32 mask)
{
desc->status &= ~IRQ_TYPE_SENSE_MASK;
desc->status |= mask & IRQ_TYPE_SENSE_MASK;
}
static inline bool irq_settings_is_level(struct irq_desc *desc)
{
return desc->status & _IRQ_LEVEL;
}
static inline void irq_settings_clr_level(struct irq_desc *desc)
{
desc->status &= ~_IRQ_LEVEL;
}
static inline void irq_settings_set_level(struct irq_desc *desc)
{
desc->status |= _IRQ_LEVEL;
}