linux-kernel - [PATCH 3/4] Input: ep93xx_keypad

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Message-Id: <20211012013735.3523140-3-dmitry.torokhov@gmail.com>
Date:   Mon, 11 Oct 2021 18:37:34 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     linux-input@...r.kernel.org
Cc:     Alexander Sverdlin <alexander.sverdlin@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] Input: ep93xx_keypad - use dev_pm_set_wake_irq()

Instead of manually toggling interrupt as wakeup source in suspend/resume
methods, let's declare keypad interrupt and wakeup interrupt and leave the
rest to the PM core.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/keyboard/ep93xx_keypad.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c
index 6be5474ba2f2..a66cfeaf5b21 100644
--- a/drivers/input/keyboard/ep93xx_keypad.c
+++ b/drivers/input/keyboard/ep93xx_keypad.c
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/soc/cirrus/ep93xx.h>
 #include <linux/platform_data/keypad-ep93xx.h>
+#include <linux/pm_wakeirq.h>
 
 /*
  * Keypad Interface Register offsets
@@ -191,9 +192,6 @@ static int __maybe_unused ep93xx_keypad_suspend(struct device *dev)
 
 	mutex_unlock(&input_dev->mutex);
 
-	if (device_may_wakeup(&pdev->dev))
-		enable_irq_wake(keypad->irq);
-
 	return 0;
 }
 
@@ -203,9 +201,6 @@ static int __maybe_unused ep93xx_keypad_resume(struct device *dev)
 	struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
 	struct input_dev *input_dev = keypad->input_dev;
 
-	if (device_may_wakeup(&pdev->dev))
-		disable_irq_wake(keypad->irq);
-
 	mutex_lock(&input_dev->mutex);
 
 	if (input_device_enabled(input_dev)) {
@@ -316,7 +311,11 @@ static int ep93xx_keypad_probe(struct platform_device *pdev)
 		goto failed_free_irq;
 
 	platform_set_drvdata(pdev, keypad);
+
 	device_init_wakeup(&pdev->dev, 1);
+	err = dev_pm_set_wake_irq(&pdev->dev, keypad->irq);
+	if (err)
+		dev_warn(&pdev->dev, "failed to set up wakeup irq: %d\n", err);
 
 	return 0;
 
@@ -342,6 +341,8 @@ static int ep93xx_keypad_remove(struct platform_device *pdev)
 	struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
 	struct resource *res;
 
+	dev_pm_clear_wake_irq(&pdev->dev);
+
 	free_irq(keypad->irq, keypad);
 
 	if (keypad->enabled)
-- 
2.33.0.882.g93a45727a2-goog