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hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/input/misc/rk805-pwrkey.c
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@@ -1,14 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Rockchip RK805 PMIC Power Key driver
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  *
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  * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
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  *
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  * Author: Joseph Chen <chenjh@rock-chips.com>
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under  the terms of the GNU General  Public License as published by the
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- * Free Software Foundation; either version 2 of the License, or (at your
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- * option) any later version.
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  */
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 #include <linux/errno.h>
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@@ -17,6 +13,7 @@
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 #include <linux/interrupt.h>
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 #include <linux/kernel.h>
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 #include <linux/module.h>
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+#include <linux/of.h>
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 #include <linux/platform_device.h>
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 static irqreturn_t pwrkey_fall_irq(int irq, void *_pwr)
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@@ -43,7 +40,14 @@
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 {
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 	struct input_dev *pwr;
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 	int fall_irq, rise_irq;
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+	struct device_node *np;
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 	int err;
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+
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+	np = of_get_child_by_name(pdev->dev.parent->of_node, "pwrkey");
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+	if (np && !of_device_is_available(np)) {
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+		dev_info(&pdev->dev, "device is disabled\n");
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+		return -EINVAL;
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+	}
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 	pwr = devm_input_allocate_device(&pdev->dev);
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 	if (!pwr) {
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@@ -57,16 +61,12 @@
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 	input_set_capability(pwr, EV_KEY, KEY_POWER);
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 	fall_irq = platform_get_irq(pdev, 0);
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-	if (fall_irq < 0) {
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-		dev_err(&pdev->dev, "Can't get fall irq: %d\n", fall_irq);
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+	if (fall_irq < 0)
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 		return fall_irq;
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-	}
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 	rise_irq = platform_get_irq(pdev, 1);
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-	if (rise_irq < 0) {
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-		dev_err(&pdev->dev, "Can't get rise irq: %d\n", rise_irq);
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+	if (rise_irq < 0)
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 		return rise_irq;
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-	}
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 	err = devm_request_any_context_irq(&pwr->dev, fall_irq,
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 					   pwrkey_fall_irq,
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@@ -106,6 +106,7 @@
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 };
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 module_platform_driver(rk805_pwrkey_driver);
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+MODULE_ALIAS("platform:rk805-pwrkey");
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 MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");
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 MODULE_DESCRIPTION("RK805 PMIC Power Key driver");
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 MODULE_LICENSE("GPL");