Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Sender: "saravanak via sendgmr" <saravanak@saravanak.san.corp.google.com>
Date:   Wed, 20 Jan 2021 00:05:21 -0800
In-Reply-To: <20210120080522.471120-1-saravanak@google.com>
Message-Id: <20210120080522.471120-3-saravanak@google.com>
Mime-Version: 1.0
References: <20210120080522.471120-1-saravanak@google.com>
Subject: [PATCH v1 2/2] of: property: Add fw_devlink support for interrupts
From:   Saravana Kannan <saravanak@google.com>
To:     Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Saravana Kannan <saravanak@google.com>,
        linux-tegra <linux-tegra@vger.kernel.org>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Jon Hunter <jonathanh@nvidia.com>,
        Marc Zyngier <maz@kernel.org>,
        Kevin Hilman <khilman@baylibre.com>, kernel-team@android.com
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

This allows fw_devlink to create device links between consumers of an
interrupt and the supplier of the interrupt.

Cc: Marc Zyngier <maz@kernel.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Saravana Kannan <saravanak@google.com>
---
 drivers/of/property.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index 0b256ce9d7d5..9dd9cc50e65a 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -24,6 +24,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_graph.h>
+#include <linux/of_irq.h>
 #include <linux/string.h>
 #include <linux/moduleparam.h>
 
@@ -1289,6 +1290,15 @@ static struct device_node *parse_gpio_compat(struct device_node *np,
 	return sup_args.np;
 }
 
+static struct device_node *parse_interrupts(struct device_node *np,
+					    const char *prop_name, int index)
+{
+	if (strcmp(prop_name, "interrupts") || index)
+		return NULL;
+
+	return of_irq_find_parent(np);
+}
+
 static const struct supplier_bindings of_supplier_bindings[] = {
 	{ .parse_prop = parse_clocks, },
 	{ .parse_prop = parse_interconnects, },
@@ -1315,6 +1325,7 @@ static const struct supplier_bindings of_supplier_bindings[] = {
 	{ .parse_prop = parse_pinctrl7, },
 	{ .parse_prop = parse_pinctrl8, },
 	{ .parse_prop = parse_gpio_compat, },
+	{ .parse_prop = parse_interrupts, },
 	{ .parse_prop = parse_regulators, },
 	{ .parse_prop = parse_gpio, },
 	{ .parse_prop = parse_gpios, },
-- 
2.30.0.284.gd98b1dd5eaa7-goog