irqchip/mvebu: Convert to msi_create_parent_irq_domain() helper

JIRA: https://issues.redhat.com/browse/RHEL-120705
Upstream Status: b35961c

commit b35961c
Author: Marc Zyngier <maz@kernel.org>
Date:   Tue May 13 18:28:14 2025 +0100

    irqchip/mvebu: Convert to msi_create_parent_irq_domain() helper

    Switch the MVEBU family of interrupt chip drivers over to the common helper
    function to create the interrupt domains.

    [ tglx: Moved the struct out of the function call argument and fix up
            the of_node_to_fwnode() instances ]

    Signed-off-by: Marc Zyngier <maz@kernel.org>
    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Link: https://lore.kernel.org/all/20250513172819.2216709-5-maz@kernel.org

Signed-off-by: Myron Stowe <mstowe@redhat.com>

Author: Myron Stowe

drivers/irqchip/irq-mvebu-gicp.c

@@ -170,9 +170,12 @@ static const struct msi_parent_ops gicp_msi_parent_ops = {
 
 static int mvebu_gicp_probe(struct platform_device *pdev)
 {
-	struct irq_domain *inner_domain, *parent_domain;
 	struct device_node *node = pdev->dev.of_node;
 	struct device_node *irq_parent_dn;
+	struct irq_domain_info info = {
+		.fwnode	= of_fwnode_handle(node),
+		.ops	= &gicp_domain_ops,
+	};
 	struct mvebu_gicp *gicp;
 	int ret, i;
 
@@ -217,30 +220,23 @@ static int mvebu_gicp_probe(struct platform_device *pdev)
 	if (!gicp->spi_bitmap)
 		return -ENOMEM;
 
+	info.size = gicp->spi_cnt;
+	info.host_data = gicp;
+
 	irq_parent_dn = of_irq_find_parent(node);
 	if (!irq_parent_dn) {
 		dev_err(&pdev->dev, "failed to find parent IRQ node\n");
 		return -ENODEV;
 	}
 
-	parent_domain = irq_find_host(irq_parent_dn);
+	info.parent = irq_find_host(irq_parent_dn);
 	of_node_put(irq_parent_dn);
-	if (!parent_domain) {
+	if (!info.parent) {
 		dev_err(&pdev->dev, "failed to find parent IRQ domain\n");
 		return -ENODEV;
 	}
 
-	inner_domain = irq_domain_create_hierarchy(parent_domain, 0,
-						   gicp->spi_cnt,
-						   of_node_to_fwnode(node),
-						   &gicp_domain_ops, gicp);
-	if (!inner_domain)
-		return -ENOMEM;
-
-	irq_domain_update_bus_token(inner_domain, DOMAIN_BUS_GENERIC_MSI);
-	inner_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
-	inner_domain->msi_parent_ops = &gicp_msi_parent_ops;
-	return 0;
+	return msi_create_parent_irq_domain(&info, &gicp_msi_parent_ops) ? 0 : -ENOMEM;
 }
 
 static const struct of_device_id mvebu_gicp_of_match[] = {

drivers/irqchip/irq-mvebu-odmi.c

@@ -167,7 +167,12 @@ static const struct msi_parent_ops odmi_msi_parent_ops = {
 static int __init mvebu_odmi_init(struct device_node *node,
 				  struct device_node *parent)
 {
-	struct irq_domain *parent_domain, *inner_domain;
+	struct irq_domain_info info = {
+		.fwnode	= of_fwnode_handle(node),
+		.ops	= &odmi_domain_ops,
+		.size	= odmis_count * NODMIS_PER_FRAME,
+		.parent	= irq_find_host(parent),
+	};
 	int ret, i;
 
 	if (of_property_read_u32(node, "marvell,odmi-frames", &odmis_count))
@@ -203,22 +208,10 @@ static int __init mvebu_odmi_init(struct device_node *node,
 		}
 	}
 
-	parent_domain = irq_find_host(parent);
+	if (msi_create_parent_irq_domain(&info, &odmi_msi_parent_ops))
+		return 0;
 
-	inner_domain = irq_domain_create_hierarchy(parent_domain, 0,
-						   odmis_count * NODMIS_PER_FRAME,
-						   of_node_to_fwnode(node),
-						   &odmi_domain_ops, NULL);
-	if (!inner_domain) {
-		ret = -ENOMEM;
-		goto err_unmap;
-	}
-
-	irq_domain_update_bus_token(inner_domain, DOMAIN_BUS_GENERIC_MSI);
-	inner_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
-	inner_domain->msi_parent_ops = &odmi_msi_parent_ops;
-
-	return 0;
+	ret = -ENOMEM;
 
 err_unmap:
 	for (i = 0; i < odmis_count; i++) {

drivers/irqchip/irq-mvebu-sei.c

@@ -366,6 +366,10 @@ static const struct msi_parent_ops sei_msi_parent_ops = {
 static int mvebu_sei_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;
+	struct irq_domain_info info = {
+		.fwnode	= of_fwnode_handle(node),
+		.ops	= &mvebu_sei_cp_domain_ops,
+	};
 	struct mvebu_sei *sei;
 	u32 parent_irq;
 	int ret;
@@ -402,7 +406,7 @@ static int mvebu_sei_probe(struct platform_device *pdev)
 	}
 
 	/* Create the root SEI domain */
-	sei->sei_domain = irq_domain_create_linear(of_node_to_fwnode(node),
+	sei->sei_domain = irq_domain_create_linear(of_fwnode_handle(node),
 						   (sei->caps->ap_range.size +
 						    sei->caps->cp_range.size),
 						   &mvebu_sei_domain_ops,
@@ -418,7 +422,7 @@ static int mvebu_sei_probe(struct platform_device *pdev)
 	/* Create the 'wired' domain */
 	sei->ap_domain = irq_domain_create_hierarchy(sei->sei_domain, 0,
 						     sei->caps->ap_range.size,
-						     of_node_to_fwnode(node),
+						     of_fwnode_handle(node),
 						     &mvebu_sei_ap_domain_ops,
 						     sei);
 	if (!sei->ap_domain) {
@@ -430,21 +434,17 @@ static int mvebu_sei_probe(struct platform_device *pdev)
 	irq_domain_update_bus_token(sei->ap_domain, DOMAIN_BUS_WIRED);
 
 	/* Create the 'MSI' domain */
-	sei->cp_domain = irq_domain_create_hierarchy(sei->sei_domain, 0,
-						     sei->caps->cp_range.size,
-						     of_node_to_fwnode(node),
-						     &mvebu_sei_cp_domain_ops,
-						     sei);
+	info.size = sei->caps->cp_range.size;
+	info.host_data = sei;
+	info.parent = sei->sei_domain;
+
+	sei->cp_domain = msi_create_parent_irq_domain(&info, &sei_msi_parent_ops);
 	if (!sei->cp_domain) {
 		pr_err("Failed to create CPs IRQ domain\n");
 		ret = -ENOMEM;
 		goto remove_ap_domain;
 	}
 
-	irq_domain_update_bus_token(sei->cp_domain, DOMAIN_BUS_GENERIC_MSI);
-	sei->cp_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT;
-	sei->cp_domain->msi_parent_ops = &sei_msi_parent_ops;
-
 	mvebu_sei_reset(sei);
 
 	irq_set_chained_handler_and_data(parent_irq, mvebu_sei_handle_cascade_irq, sei);