diff options
| author | Marc Zyngier <maz@kernel.org> | 2025-10-20 15:29:20 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-10-27 19:16:32 +0300 |
| commit | 5404f5c06dd41fd4445a01dec77a629e254a62e8 (patch) | |
| tree | 69ec768609d17d957233c3ca350e37036a58f21e | |
| parent | 5324fe21ba9b77b299c02191645a97777cdd73ac (diff) | |
| download | linux-5404f5c06dd41fd4445a01dec77a629e254a62e8.tar.xz | |
of/irq: Add interrupt affinity reporting interface
Plug the irq_populate_fwspec_info() helper into the OF layer to offer an
interrupt affinity reporting function.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Will Deacon <will@kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20251020122944.3074811-4-maz@kernel.org
| -rw-r--r-- | drivers/of/irq.c | 20 | ||||
| -rw-r--r-- | include/linux/of_irq.h | 7 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 65c3c23255b7..168fde921bd2 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -479,6 +479,26 @@ out: } EXPORT_SYMBOL_GPL(of_irq_get); +const struct cpumask *of_irq_get_affinity(struct device_node *dev, int index) +{ + struct of_phandle_args oirq; + struct irq_fwspec_info info; + struct irq_fwspec fwspec; + int rc; + + rc = of_irq_parse_one(dev, index, &oirq); + if (rc) + return NULL; + + of_phandle_args_to_fwspec(oirq.np, oirq.args, oirq.args_count, + &fwspec); + + if (irq_populate_fwspec_info(&fwspec, &info)) + return NULL; + + return info.affinity; +} + /** * of_irq_get_byname - Decode a node's IRQ and return it as a Linux IRQ number * @dev: pointer to device tree node diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 1db8543dfc8a..1c2bc0281807 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -43,6 +43,8 @@ extern int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq); extern int of_irq_count(struct device_node *dev); extern int of_irq_get(struct device_node *dev, int index); +extern const struct cpumask *of_irq_get_affinity(struct device_node *dev, + int index); extern int of_irq_get_byname(struct device_node *dev, const char *name); extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); @@ -76,6 +78,11 @@ static inline int of_irq_get_byname(struct device_node *dev, const char *name) { return 0; } +static inline const struct cpumask *of_irq_get_affinity(struct device_node *dev, + int index) +{ + return NULL; +} static inline int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs) { |