linux-kernel - [PATCH 1/6] irqchip/bcm7120-l2: Set controller as wake-up source

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Message-Id: <20200709223016.989-2-f.fainelli@gmail.com>
Date:   Thu,  9 Jul 2020 15:30:11 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Justin Chen <justinpopo6@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com (maintainer:BROADCOM BCM7XXX ARM
        ARCHITECTURE),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        linux-mips@...r.kernel.org (open list:BROADCOM BMIPS MIPS ARCHITECTURE),
        linux-arm-kernel@...ts.infradead.org (moderated list:BROADCOM BCM7XXX
        ARM ARCHITECTURE)
Subject: [PATCH 1/6] irqchip/bcm7120-l2: Set controller as wake-up source

From: Justin Chen <justinpopo6@...il.com>

Utilize the Broadcom interrupt controller standard property
"brcm,irq-can-wake" to flag whether this particular interrupt controller
instance is wake-up capable.

Since we do not know what type of parent interrupt controller we are
interfaced with, ensure that enable_irq_wake() is called early on.

Signed-off-by: Justin Chen <justinpopo6@...il.com>
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/irqchip/irq-bcm7120-l2.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-bcm7120-l2.c b/drivers/irqchip/irq-bcm7120-l2.c
index 586df3587be0..c7c9e976acbb 100644
--- a/drivers/irqchip/irq-bcm7120-l2.c
+++ b/drivers/irqchip/irq-bcm7120-l2.c
@@ -143,6 +143,9 @@ static int bcm7120_l2_intc_init_one(struct device_node *dn,
 
 	irq_set_chained_handler_and_data(parent_irq,
 					 bcm7120_l2_intc_irq_handle, l1_data);
+	if (data->can_wake)
+		enable_irq_wake(parent_irq);
+
 	return 0;
 }
 
@@ -247,6 +250,8 @@ static int __init bcm7120_l2_intc_probe(struct device_node *dn,
 	if (ret < 0)
 		goto out_free_l1_data;
 
+	data->can_wake = of_property_read_bool(dn, "brcm,irq-can-wake");
+
 	for (irq = 0; irq < data->num_parent_irqs; irq++) {
 		ret = bcm7120_l2_intc_init_one(dn, data, irq, valid_mask);
 		if (ret)
@@ -274,9 +279,6 @@ static int __init bcm7120_l2_intc_probe(struct device_node *dn,
 		goto out_free_domain;
 	}
 
-	if (of_property_read_bool(dn, "brcm,irq-can-wake"))
-		data->can_wake = true;
-
 	for (idx = 0; idx < data->n_words; idx++) {
 		irq = idx * IRQS_PER_WORD;
 		gc = irq_get_domain_generic_chip(data->domain, irq);
-- 
2.17.1