linux-kernel - [PATCH] irqchip/bcm2836: Enable SKIP_SET_WAKE and MASK_ON

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Message-Id: <20241202115437.33552-1-wahrenst@gmx.net>
Date: Mon,  2 Dec 2024 12:54:37 +0100
From: Stefan Wahren <wahrenst@....net>
To: Florian Fainelli <florian.fainelli@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Thomas Gleixner <tglx@...utronix.de>
Cc: Lukas Wunner <lukas@...ner.de>,
	Peter Robinson <pbrobinson@...il.com>,
	"Ivan T . Ivanov" <iivanov@...e.de>,
	linux-arm-kernel@...ts.infradead.org,
	bcm-kernel-feedback-list@...adcom.com,
	linux-kernel@...r.kernel.org,
	Stefan Wahren <wahrenst@....net>
Subject: [PATCH] irqchip/bcm2836: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND

The BCM2836 interrupt controller doesn't provide any facility to
configure the wakeup sources. That's the reason why the driver lacks
the irq_set_wake() callback for the interrupt chip.

Enable the flags IRQCHIP_SKIP_SET_WAKE and IRQCHIP_MASK_ON_SUSPEND so
the interrupt suspend logic can handle the chip correctly.

This was inspired by the patch series "irqchip/irq-bcm283x update
for BCM7211" by Florian Fainelli.

Link: https://lore.kernel.org/lkml/20191001224842.9382-1-f.fainelli@gmail.com/
Signed-off-by: Stefan Wahren <wahrenst@....net>
---
 drivers/irqchip/irq-bcm2836.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c
index e5f1059b989f..e366257684b5 100644
--- a/drivers/irqchip/irq-bcm2836.c
+++ b/drivers/irqchip/irq-bcm2836.c
@@ -58,6 +58,7 @@ static struct irq_chip bcm2836_arm_irqchip_timer = {
 	.name		= "bcm2836-timer",
 	.irq_mask	= bcm2836_arm_irqchip_mask_timer_irq,
 	.irq_unmask	= bcm2836_arm_irqchip_unmask_timer_irq,
+	.flags		= IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
 };

 static void bcm2836_arm_irqchip_mask_pmu_irq(struct irq_data *d)
@@ -74,6 +75,7 @@ static struct irq_chip bcm2836_arm_irqchip_pmu = {
 	.name		= "bcm2836-pmu",
 	.irq_mask	= bcm2836_arm_irqchip_mask_pmu_irq,
 	.irq_unmask	= bcm2836_arm_irqchip_unmask_pmu_irq,
+	.flags		= IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
 };

 static void bcm2836_arm_irqchip_mask_gpu_irq(struct irq_data *d)
@@ -88,6 +90,7 @@ static struct irq_chip bcm2836_arm_irqchip_gpu = {
 	.name		= "bcm2836-gpu",
 	.irq_mask	= bcm2836_arm_irqchip_mask_gpu_irq,
 	.irq_unmask	= bcm2836_arm_irqchip_unmask_gpu_irq,
+	.flags		= IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
 };

 static void bcm2836_arm_irqchip_dummy_op(struct irq_data *d)
--
2.34.1