release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/dio/dio-sysfs.c

   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 }