Subject: [PATCH 5/7] irqchip/irq-bcm2836: Add support for the 7211 interrupt controller

From: Florian Fainelli <[email-masked]>
Date: Tue, 1 Oct 2019 15:48:40 -0700

The root interrupt controller on 7211 is about identical to the one
existing on BCM2836, except that the SMP cross call are done through the
standard ARM GIC-400 interrupt controller. This interrupt controller is
used for side band wake-up signals though.

Signed-off-by: Florian Fainelli <[email-masked]>
---
 drivers/irqchip/irq-bcm2836.c | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c
index 2038693f074c..77fa395c8f6b 100644
--- a/drivers/irqchip/irq-bcm2836.c
+++ b/drivers/irqchip/irq-bcm2836.c
@@ -112,6 +112,8 @@ static int bcm2836_map(struct irq_domain *d, unsigned int irq,
 		return -EINVAL;
 	}
 
+	chip->flags |= IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE;
+
 	irq_set_percpu_devid(irq);
 	irq_domain_set_info(d, irq, hw, chip, d->host_data,
 			    handle_percpu_devid_irq, NULL, NULL);
@@ -216,8 +218,9 @@ static void bcm2835_init_local_timer_frequency(void)
 	writel(0x80000000, intc.base + LOCAL_PRESCALER);
 }
 
-static int __init bcm2836_arm_irqchip_l1_intc_of_init(struct device_node *node,
-						      struct device_node *parent)
+static int __init arm_irqchip_l1_intc_of_init_smp(struct device_node *node,
+						  struct device_node *parent,
+						  bool smp_init)
 {
 	intc.base = of_iomap(node, 0);
 	if (!intc.base) {
@@ -232,11 +235,27 @@ static int __init bcm2836_arm_irqchip_l1_intc_of_init(struct device_node *node,
 	if (!intc.domain)
 		panic("%pOF: unable to create IRQ domain\n", node);
 
-	bcm2836_arm_irqchip_smp_init();
+	if (smp_init)
+		bcm2836_arm_irqchip_smp_init();
 
 	set_handle_irq(bcm2836_arm_irqchip_handle_irq);
+
 	return 0;
 }
 
+static int __init bcm2836_arm_irqchip_l1_intc_of_init(struct device_node *node,
+						      struct device_node *parent)
+{
+	return arm_irqchip_l1_intc_of_init_smp(node, parent, true);
+}
+
+static int __init bcm7211_arm_irqchip_l1_intc_of_init(struct device_node *node,
+						      struct device_node *parent)
+{
+	return arm_irqchip_l1_intc_of_init_smp(node, parent, false);
+}
+
 IRQCHIP_DECLARE(bcm2836_arm_irqchip_l1_intc, "brcm,bcm2836-l1-intc",
 		bcm2836_arm_irqchip_l1_intc_of_init);
+IRQCHIP_DECLARE(bcm7211_arm_irqchip_l1_intc, "brcm,bcm7211-l1-intc",
+		bcm7211_arm_irqchip_l1_intc_of_init);
-- 
2.17.1

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