47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/kernel.h>
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#include <linux/stat.h>
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/* FIX UP */
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#include "soundbus.h"
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#define soundbus_config_of_attr(field, format_string) \
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static ssize_t \
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field##_show (struct device *dev, struct device_attribute *attr, \
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char *buf) \
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{ \
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struct soundbus_dev *mdev = to_soundbus_device (dev); \
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return sprintf (buf, format_string, mdev->ofdev.dev.of_node->field); \
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}
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static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct soundbus_dev *sdev = to_soundbus_device(dev);
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struct platform_device *of = &sdev->ofdev;
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int length;
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if (*sdev->modalias) {
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strlcpy(buf, sdev->modalias, sizeof(sdev->modalias) + 1);
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strcat(buf, "\n");
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length = strlen(buf);
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} else {
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length = sprintf(buf, "of:N%sT%s\n",
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of->dev.of_node->name, of->dev.of_node->type);
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}
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return length;
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}
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static DEVICE_ATTR_RO(modalias);
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soundbus_config_of_attr (name, "%s\n");
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static DEVICE_ATTR_RO(name);
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soundbus_config_of_attr (type, "%s\n");
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static DEVICE_ATTR_RO(type);
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struct attribute *soundbus_dev_attrs[] = {
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&dev_attr_name.attr,
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&dev_attr_type.attr,
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&dev_attr_modalias.attr,
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NULL,
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};
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