linux-kernel - [PATCH 3/4] irqchip: ingenic: Get virq number from IRQ domain

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Message-Id: <20190727191741.30317-3-paul@crapouillou.net>
Date:   Sat, 27 Jul 2019 15:17:40 -0400
From:   Paul Cercueil <paul@...pouillou.net>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>
Cc:     linux-kernel@...r.kernel.org, od@...c.me,
        Paul Cercueil <paul@...pouillou.net>
Subject: [PATCH 3/4] irqchip: ingenic: Get virq number from IRQ domain

Get the virq number from the IRQ domain instead of calculating it from
the hardcoded irq base.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
 drivers/irqchip/irq-ingenic.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-ingenic.c b/drivers/irqchip/irq-ingenic.c
index d97a3a500249..82a079fa3a3d 100644
--- a/drivers/irqchip/irq-ingenic.c
+++ b/drivers/irqchip/irq-ingenic.c
@@ -21,6 +21,7 @@
 
 struct ingenic_intc_data {
 	void __iomem *base;
+	struct irq_domain *domain;
 	unsigned num_chips;
 };
 
@@ -34,6 +35,7 @@ struct ingenic_intc_data {
 static irqreturn_t intc_cascade(int irq, void *data)
 {
 	struct ingenic_intc_data *intc = irq_get_handler_data(irq);
+	struct irq_domain *domain = intc->domain;
 	uint32_t irq_reg;
 	unsigned i;
 
@@ -43,7 +45,8 @@ static irqreturn_t intc_cascade(int irq, void *data)
 		if (!irq_reg)
 			continue;
 
-		generic_handle_irq(__fls(irq_reg) + (i * 32) + JZ4740_IRQ_BASE);
+		irq = irq_find_mapping(domain, __fls(irq_reg) + (i * 32));
+		generic_handle_irq(irq);
 	}
 
 	return IRQ_HANDLED;
@@ -95,6 +98,8 @@ static int __init ingenic_intc_of_init(struct device_node *node,
 		goto out_unmap_base;
 	}
 
+	intc->domain = domain;
+
 	for (i = 0; i < num_chips; i++) {
 		/* Mask all irqs */
 		writel(0xffffffff, intc->base + (i * CHIP_SIZE) +
-- 
2.21.0.593.g511ec345e18