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1// SPDX-License-Identifier: GPL-2.02#include <linux/kernel.h>3#include <linux/of.h>4#include <linux/of_device.h>5#include <linux/stat.h>6#include <asm/macio.h>7 8static ssize_t9compatible_show (struct device *dev, struct device_attribute *attr, char *buf)10{11 struct platform_device *of;12 const char *compat;13 int cplen;14 int length = 0;15 16 of = &to_macio_device (dev)->ofdev;17 compat = of_get_property(of->dev.of_node, "compatible", &cplen);18 if (!compat) {19 *buf = '\0';20 return 0;21 }22 while (cplen > 0) {23 int l;24 length += sprintf (buf, "%s\n", compat);25 buf += length;26 l = strlen (compat) + 1;27 compat += l;28 cplen -= l;29 }30 31 return length;32}33static DEVICE_ATTR_RO(compatible);34 35static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,36 char *buf)37{38 return of_device_modalias(dev, buf, PAGE_SIZE);39}40 41static ssize_t devspec_show(struct device *dev,42 struct device_attribute *attr, char *buf)43{44 struct platform_device *ofdev;45 46 ofdev = to_platform_device(dev);47 return sprintf(buf, "%pOF\n", ofdev->dev.of_node);48}49static DEVICE_ATTR_RO(modalias);50static DEVICE_ATTR_RO(devspec);51 52static ssize_t name_show(struct device *dev,53 struct device_attribute *attr, char *buf)54{55 return sprintf(buf, "%pOFn\n", dev->of_node);56}57static DEVICE_ATTR_RO(name);58 59static ssize_t type_show(struct device *dev,60 struct device_attribute *attr, char *buf)61{62 return sprintf(buf, "%s\n", of_node_get_device_type(dev->of_node));63}64static DEVICE_ATTR_RO(type);65 66static struct attribute *macio_dev_attrs[] = {67 &dev_attr_name.attr,68 &dev_attr_type.attr,69 &dev_attr_compatible.attr,70 &dev_attr_modalias.attr,71 &dev_attr_devspec.attr,72 NULL,73};74 75static const struct attribute_group macio_dev_group = {76 .attrs = macio_dev_attrs,77};78 79const struct attribute_group *macio_dev_groups[] = {80 &macio_dev_group,81 NULL,82};83