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| author | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2025-08-05 15:34:43 +0200 |
|---|---|---|
| committer | Rob Herring (Arm) <robh@kernel.org> | 2025-09-03 09:01:26 -0500 |
| commit | a576a849d5f33356e0d8fd3eae4fbaf8869417e5 (patch) | |
| tree | 657ca5475fce96699848ee2aaa8d1c2013398f9f /drivers/of | |
| parent | 0e44780b423afed8c35005b31536a7bb3c52f70f (diff) | |
| download | net-a576a849d5f33356e0d8fd3eae4fbaf8869417e5.tar.gz | |
of/irq: Convert of_msi_map_id() callers to of_msi_xlate()
With the introduction of the of_msi_xlate() function, the OF layer
provides an API to map a device ID and retrieve the MSI controller
node the ID is mapped to with a single call.
of_msi_map_id() is currently used to map a deviceID to a specific
MSI controller node; of_msi_xlate() can be used for that purpose
too, there is no need to keep the two functions.
Convert of_msi_map_id() to of_msi_xlate() calls and update the
of_msi_xlate() documentation to describe how the struct device_node
pointer passed in should be set-up to either provide the MSI controller
node target or receive its pointer upon mapping completion.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Herring <robh@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250805133443.936955-1-lpieralisi@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/irq.c | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 74aaea61de13c9..e7c12abd10ab7c 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -673,13 +673,14 @@ err: /** * of_msi_xlate - map a MSI ID and find relevant MSI controller node * @dev: device for which the mapping is to be done. - * @msi_np: Pointer to store the MSI controller node + * @msi_np: Pointer to target MSI controller node * @id_in: Device ID. * * Walk up the device hierarchy looking for devices with a "msi-map" - * property. If found, apply the mapping to @id_in. @msi_np pointed - * value must be NULL on entry, if an MSI controller is found @msi_np is - * initialized to the MSI controller node with a reference held. + * property. If found, apply the mapping to @id_in. + * If @msi_np points to a non-NULL device node pointer, only entries targeting + * that node will be matched; if it points to a NULL value, it will receive the + * device node of the first matching target phandle, with a reference held. * * Returns: The mapped MSI id. */ @@ -700,22 +701,6 @@ u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in) } /** - * of_msi_map_id - Map a MSI ID for a device. - * @dev: device for which the mapping is to be done. - * @msi_np: device node of the expected msi controller. - * @id_in: unmapped MSI ID for the device. - * - * Walk up the device hierarchy looking for devices with a "msi-map" - * property. If found, apply the mapping to @id_in. - * - * Return: The mapped MSI ID. - */ -u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in) -{ - return of_msi_xlate(dev, &msi_np, id_in); -} - -/** * of_msi_map_get_device_domain - Use msi-map to find the relevant MSI domain * @dev: device for which the mapping is to be done. * @id: Device ID. |