修改GPIO导出默认初始值

hc

2024-10-16 50a212ec906f7524620675f0c57357691c26c81f

修改GPIO导出默认初始值

 kernel/drivers/gpio/gpiolib-sysfs.c
..
..
@@ -81,13 +81,17 @@
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 	struct gpiod_data *data = dev_get_drvdata(dev);
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 	struct gpio_desc *desc = data->desc;
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 	ssize_t			status;
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+	int offset;
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 	mutex_lock(&data->mutex);
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-
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+	offset = gpio_chip_hwgpio(desc);
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 	if (sysfs_streq(buf, "high"))
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 		status = gpiod_direction_output_raw(desc, 1);
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 	else if (sysfs_streq(buf, "out") || sysfs_streq(buf, "low"))
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-		status = gpiod_direction_output_raw(desc, 0);
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+		if (( offset == 8 ) || ( offset == 11 ) || ( offset == 12 ) || ( offset == 13 ) || ( offset == 14 ))
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+			status = gpiod_direction_output_raw(desc, 1);
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+		else
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+			status = gpiod_direction_output_raw(desc, 0);
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 	else if (sysfs_streq(buf, "in"))
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 		status = gpiod_direction_input(desc);
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 	else