Introduce irq_domain_create_legacy() API which is functional equivalent to the existing irq_domain_add_legacy(), but takes a pointer to the struct fwnode_handle as a parameter.
Some users want to use it in non-OF cases. Signed-off-by: Andy Shevchenko <[email protected]> --- Documentation/core-api/irq/irq-domain.rst | 6 ++++++ include/linux/irqdomain.h | 6 ++++++ kernel/irq/irqdomain.c | 17 ++++++++++++++--- 3 files changed, 26 insertions(+), 3 deletions(-) diff --git a/Documentation/core-api/irq/irq-domain.rst b/Documentation/core-api/irq/irq-domain.rst index 096db12f32d5..a77c24c27f7b 100644 --- a/Documentation/core-api/irq/irq-domain.rst +++ b/Documentation/core-api/irq/irq-domain.rst @@ -147,6 +147,7 @@ Legacy irq_domain_add_simple() irq_domain_add_legacy() irq_domain_add_legacy_isa() + irq_domain_create_legacy() The Legacy mapping is a special case for drivers that already have a range of irq_descs allocated for the hwirqs. It is used when the @@ -185,6 +186,11 @@ that the driver using the simple domain call irq_create_mapping() before any irq_find_mapping() since the latter will actually work for the static IRQ assignment case. +irq_domain_add_legacy() and irq_domain_create_legacy() are functionally +equivalent, except for the first argument is different - the former +accepts an Open Firmware specific 'struct device_node', while the latter +accepts a more general abstraction 'struct fwnode_handle'. + Hierarchy IRQ domain -------------------- diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 39bb0c13ac07..529719f4a034 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -270,6 +270,12 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, irq_hw_number_t first_hwirq, const struct irq_domain_ops *ops, void *host_data); +struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, + unsigned int size, + unsigned int first_irq, + irq_hw_number_t first_hwirq, + const struct irq_domain_ops *ops, + void *host_data); extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, enum irq_domain_bus_token bus_token); extern bool irq_domain_check_msi_remap(void); diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index d7a762cce8e9..04936a3eb34e 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -349,17 +349,28 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node, irq_hw_number_t first_hwirq, const struct irq_domain_ops *ops, void *host_data) +{ + return irq_domain_create_legacy(of_node_to_fwnode(of_node), size, + first_irq, first_hwirq, ops, host_data); +} +EXPORT_SYMBOL_GPL(irq_domain_add_legacy); + +struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, + unsigned int size, + unsigned int first_irq, + irq_hw_number_t first_hwirq, + const struct irq_domain_ops *ops, + void *host_data) { struct irq_domain *domain; - domain = __irq_domain_add(of_node_to_fwnode(of_node), first_hwirq + size, - first_hwirq + size, 0, ops, host_data); + domain = __irq_domain_add(fwnode, first_hwirq + size, first_hwirq + size, 0, ops, host_data); if (domain) irq_domain_associate_many(domain, first_irq, first_hwirq, size); return domain; } -EXPORT_SYMBOL_GPL(irq_domain_add_legacy); +EXPORT_SYMBOL_GPL(irq_domain_create_legacy); /** * irq_find_matching_fwspec() - Locates a domain for a given fwspec -- 2.27.0
