Linux Kernel  3.7.1
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dio-sysfs.c
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1 /*
2  * File Attributes for DIO Devices
3  *
4  * Copyright (C) 2004 Jochen Friedrich
5  *
6  * Loosely based on drivers/pci/pci-sysfs.c and drivers/zorro/zorro-sysfs.c
7  *
8  * This file is subject to the terms and conditions of the GNU General Public
9  * License. See the file COPYING in the main directory of this archive
10  * for more details.
11  */
12 
13 
14 #include <linux/kernel.h>
15 #include <linux/dio.h>
16 #include <linux/stat.h>
17 
18 /* show configuration fields */
19 
20 static ssize_t dio_show_id(struct device *dev, struct device_attribute *attr, char *buf)
21 {
22  struct dio_dev *d;
23 
24  d = to_dio_dev(dev);
25  return sprintf(buf, "0x%02x\n", (d->id & 0xff));
26 }
27 static DEVICE_ATTR(id, S_IRUGO, dio_show_id, NULL);
28 
29 static ssize_t dio_show_ipl(struct device *dev, struct device_attribute *attr, char *buf)
30 {
31  struct dio_dev *d;
32 
33  d = to_dio_dev(dev);
34  return sprintf(buf, "0x%02x\n", d->ipl);
35 }
36 static DEVICE_ATTR(ipl, S_IRUGO, dio_show_ipl, NULL);
37 
38 static ssize_t dio_show_secid(struct device *dev, struct device_attribute *attr, char *buf)
39 {
40  struct dio_dev *d;
41 
42  d = to_dio_dev(dev);
43  return sprintf(buf, "0x%02x\n", ((d->id >> 8)& 0xff));
44 }
45 static DEVICE_ATTR(secid, S_IRUGO, dio_show_secid, NULL);
46 
47 static ssize_t dio_show_name(struct device *dev, struct device_attribute *attr, char *buf)
48 {
49  struct dio_dev *d;
50 
51  d = to_dio_dev(dev);
52  return sprintf(buf, "%s\n", d->name);
53 }
54 static DEVICE_ATTR(name, S_IRUGO, dio_show_name, NULL);
55 
56 static ssize_t dio_show_resource(struct device *dev, struct device_attribute *attr, char *buf)
57 {
58  struct dio_dev *d = to_dio_dev(dev);
59 
60  return sprintf(buf, "0x%08lx 0x%08lx 0x%08lx\n",
61  (unsigned long)dio_resource_start(d),
62  (unsigned long)dio_resource_end(d),
63  dio_resource_flags(d));
64 }
65 static DEVICE_ATTR(resource, S_IRUGO, dio_show_resource, NULL);
66 
67 int dio_create_sysfs_dev_files(struct dio_dev *d)
68 {
69  struct device *dev = &d->dev;
70  int error;
71 
72  /* current configuration's attributes */
73  if ((error = device_create_file(dev, &dev_attr_id)) ||
74  (error = device_create_file(dev, &dev_attr_ipl)) ||
75  (error = device_create_file(dev, &dev_attr_secid)) ||
76  (error = device_create_file(dev, &dev_attr_name)) ||
77  (error = device_create_file(dev, &dev_attr_resource)))
78  return error;
79 
80  return 0;
81 }
82