diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/aoa/soundbus/sysfs.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/aoa/soundbus/sysfs.c b/sound/aoa/soundbus/sysfs.c new file mode 100644 index 000000000..81da020bd --- /dev/null +++ b/sound/aoa/soundbus/sysfs.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/kernel.h> +#include <linux/stat.h> +/* FIX UP */ +#include "soundbus.h" + +#define soundbus_config_of_attr(field, format_string) \ +static ssize_t \ +field##_show (struct device *dev, struct device_attribute *attr, \ + char *buf) \ +{ \ + struct soundbus_dev *mdev = to_soundbus_device (dev); \ + return sprintf (buf, format_string, mdev->ofdev.dev.of_node->field); \ +} + +static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct soundbus_dev *sdev = to_soundbus_device(dev); + struct platform_device *of = &sdev->ofdev; + int length; + + if (*sdev->modalias) { + strlcpy(buf, sdev->modalias, sizeof(sdev->modalias) + 1); + strcat(buf, "\n"); + length = strlen(buf); + } else { + length = sprintf(buf, "of:N%sT%s\n", + of->dev.of_node->name, of->dev.of_node->type); + } + + return length; +} +static DEVICE_ATTR_RO(modalias); + +soundbus_config_of_attr (name, "%s\n"); +static DEVICE_ATTR_RO(name); +soundbus_config_of_attr (type, "%s\n"); +static DEVICE_ATTR_RO(type); + +struct attribute *soundbus_dev_attrs[] = { + &dev_attr_name.attr, + &dev_attr_type.attr, + &dev_attr_modalias.attr, + NULL, +}; |