root/drivers/sh/superhyway/superhyway-sysfs.c

   1 /*
   2  * drivers/sh/superhyway/superhyway-sysfs.c
   3  *
   4  * SuperHyway Bus sysfs interface
   5  *
   6  * Copyright (C) 2004, 2005  Paul Mundt <lethal@linux-sh.org>
   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 #include <linux/kernel.h>
  13 #include <linux/device.h>
  14 #include <linux/types.h>
  15 #include <linux/superhyway.h>
  16 
  17 #define superhyway_ro_attr(name, fmt, field)                            \
  18 static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf)                \
  19 {                                                                       \
  20         struct superhyway_device *s = to_superhyway_device(dev);        \
  21         return sprintf(buf, fmt, s->field);                             \
  22 }                                                                       \
  23 static DEVICE_ATTR_RO(name);
  24 
  25 /* VCR flags */
  26 superhyway_ro_attr(perr_flags, "0x%02x\n", vcr.perr_flags);
  27 superhyway_ro_attr(merr_flags, "0x%02x\n", vcr.merr_flags);
  28 superhyway_ro_attr(mod_vers, "0x%04x\n", vcr.mod_vers);
  29 superhyway_ro_attr(mod_id, "0x%04x\n", vcr.mod_id);
  30 superhyway_ro_attr(bot_mb, "0x%02x\n", vcr.bot_mb);
  31 superhyway_ro_attr(top_mb, "0x%02x\n", vcr.top_mb);
  32 
  33 /* Misc */
  34 superhyway_ro_attr(resource, "0x%08lx\n", resource[0].start);
  35 
  36 static struct attribute *superhyway_dev_attrs[] = {
  37         &dev_attr_perr_flags.attr,
  38         &dev_attr_merr_flags.attr,
  39         &dev_attr_mod_vers.attr,
  40         &dev_attr_mod_id.attr,
  41         &dev_attr_bot_mb.attr,
  42         &dev_attr_top_mb.attr,
  43         &dev_attr_resource.attr,
  44         NULL,
  45 };
  46 
  47 static const struct attribute_group superhyway_dev_group = {
  48         .attrs = superhyway_dev_attrs,
  49 };
  50 
  51 const struct attribute_group *superhyway_dev_groups[] = {
  52         &superhyway_dev_group,
  53         NULL,
  54 };