linux-kernel - [PATCH v3] extcon: usbc-tusb320: Set interrupt polarity based on device-tree

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Date:   Tue, 5 Dec 2023 10:06:31 +0900
From:   "Chanwoo Choi" <cw00.choi@...sung.com>
To:     <linux-kernel@...r.kernel.org>
Cc:     "'Lukas Funke'" <lukas.funke-oss@...dmueller.com>,
        "'Signed-off-by: Chanwoo Choi'" <cw00.choi@...sung.com>,
        "'Chanwoo Choi'" <chanwoo@...nel.org>,
        "'MyungJoo Ham'" <myungjoo.ham@...sung.com>,
        "'Reported-by: kernel test robot'" <lkp@...el.com>
Subject: [PATCH v3] extcon: usbc-tusb320: Set interrupt polarity based on
 device-tree

Remove 'IRQF_TRIGGER_FALLING' request which is not allowed on
every interrupt controller (i.e. arm64 GIC). Replace flag by a
request that depends on the actual device-tree setting.

Reported-by: kernel test robot <lkp@...el.com>
Closes:
https://lore.kernel.org/oe-kbuild-all/202311221355.yxYpTIw3-lkp@intel.com/
Signed-off-by: Lukas Funke <lukas.funke@...dmueller.com>
Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
---
Changes from v2
- Use IRQF_TRIGGER_FALLING if there are no irq_data on devicetree

 drivers/extcon/extcon-usbc-tusb320.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/extcon/extcon-usbc-tusb320.c
b/drivers/extcon/extcon-usbc-tusb320.c
index 4d08c2123e59..2eab341de6b7 100644
--- a/drivers/extcon/extcon-usbc-tusb320.c
+++ b/drivers/extcon/extcon-usbc-tusb320.c
@@ -17,6 +17,7 @@
 #include <linux/usb/typec.h>
 #include <linux/usb/typec_altmode.h>
 #include <linux/usb/role.h>
+#include <linux/irq.h>
 
 #define TUSB320_REG8				0x8
 #define TUSB320_REG8_CURRENT_MODE_ADVERTISE	GENMASK(7, 6)
@@ -515,6 +516,8 @@ static int tusb320_probe(struct i2c_client *client)
 	const void *match_data;
 	unsigned int revision;
 	int ret;
+	u32 irq_trigger_type = IRQF_TRIGGER_FALLING;
+	struct irq_data *irq_d;
 
 	priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
@@ -568,9 +571,13 @@ static int tusb320_probe(struct i2c_client *client)
 		 */
 		tusb320_state_update_handler(priv, true);
 
+	irq_d = irq_get_irq_data(client->irq);
+	if (irq_d)
+		irq_trigger_type = irqd_get_trigger_type(irq_d);
+
 	ret = devm_request_threaded_irq(priv->dev, client->irq, NULL,
 					tusb320_irq_handler,
-					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+					IRQF_ONESHOT | irq_trigger_type,
 					client->name, priv);
 	if (ret)
 		tusb320_typec_remove(priv);
-- 
2.25.1