diff options
| author | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2025-07-03 13:25:14 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2025-07-08 20:35:52 +0300 |
| commit | 31fd3becb920e0b31b99cf202ace637f75dd7e78 (patch) | |
| tree | e1189c39607415e98d75cb8768e046278cab285e /include/linux | |
| parent | 03a28dc39838e67164728ad410081352b1589d78 (diff) | |
| download | linux-31fd3becb920e0b31b99cf202ace637f75dd7e78.tar.xz | |
of/irq: Add of_msi_xlate() helper function
Add an of_msi_xlate() helper that maps a device ID and returns
the device node of the MSI controller the device ID is mapped to.
Required by core functions that need an MSI controller device node
pointer at the same time as a mapped device ID, of_msi_map_id() is not
sufficient for that purpose.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250703-gicv5-host-v7-24-12e71f1b3528@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/of_irq.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 6337ad4e5fe8..a480063c9cb1 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -54,6 +54,7 @@ extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, u32 bus_token); extern void of_msi_configure(struct device *dev, const struct device_node *np); +extern u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in); u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); #else static inline void of_irq_init(const struct of_device_id *matches) @@ -100,6 +101,10 @@ static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev static inline void of_msi_configure(struct device *dev, struct device_node *np) { } +static inline u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in) +{ + return id_in; +} static inline u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in) { |