linux/drivers/pcmcia/socket_sysfs.c
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   1/*
   2 * socket_sysfs.c -- most of socket-related sysfs output
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License version 2 as
   6 * published by the Free Software Foundation.
   7 *
   8 * (C) 2003 - 2004              Dominik Brodowski
   9 */
  10
  11#include <linux/module.h>
  12#include <linux/moduleparam.h>
  13#include <linux/init.h>
  14#include <linux/kernel.h>
  15#include <linux/string.h>
  16#include <linux/major.h>
  17#include <linux/errno.h>
  18#include <linux/mm.h>
  19#include <linux/interrupt.h>
  20#include <linux/timer.h>
  21#include <linux/ioport.h>
  22#include <linux/delay.h>
  23#include <linux/pm.h>
  24#include <linux/device.h>
  25#include <linux/mutex.h>
  26#include <asm/irq.h>
  27
  28#include <pcmcia/ss.h>
  29#include <pcmcia/cistpl.h>
  30#include <pcmcia/cisreg.h>
  31#include <pcmcia/ds.h>
  32#include "cs_internal.h"
  33
  34#define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
  35
  36static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,
  37                                char *buf)
  38{
  39        struct pcmcia_socket *s = to_socket(dev);
  40
  41        if (!(s->state & SOCKET_PRESENT))
  42                return -ENODEV;
  43        if (s->state & SOCKET_CARDBUS)
  44                return sprintf(buf, "32-bit\n");
  45        return sprintf(buf, "16-bit\n");
  46}
  47static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
  48
  49static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,
  50                                   char *buf)
  51{
  52        struct pcmcia_socket *s = to_socket(dev);
  53
  54        if (!(s->state & SOCKET_PRESENT))
  55                return -ENODEV;
  56        if (s->socket.Vcc)
  57                return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10,
  58                               s->socket.Vcc % 10);
  59        return sprintf(buf, "X.XV\n");
  60}
  61static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
  62
  63static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,
  64                               char *buf)
  65{
  66        struct pcmcia_socket *s = to_socket(dev);
  67        if (!(s->state & SOCKET_PRESENT))
  68                return -ENODEV;
  69        return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
  70}
  71static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
  72
  73static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,
  74                               char *buf)
  75{
  76        struct pcmcia_socket *s = to_socket(dev);
  77        if (!(s->state & SOCKET_PRESENT))
  78                return -ENODEV;
  79        return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
  80}
  81static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
  82
  83
  84static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,
  85                                   const char *buf, size_t count)
  86{
  87        struct pcmcia_socket *s = to_socket(dev);
  88
  89        if (!count)
  90                return -EINVAL;
  91
  92        pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT);
  93
  94        return count;
  95}
  96static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
  97
  98
  99static ssize_t pccard_show_card_pm_state(struct device *dev,
 100                                         struct device_attribute *attr,
 101                                         char *buf)
 102{
 103        struct pcmcia_socket *s = to_socket(dev);
 104        return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
 105}
 106
 107static ssize_t pccard_store_card_pm_state(struct device *dev,
 108                                          struct device_attribute *attr,
 109                                          const char *buf, size_t count)
 110{
 111        struct pcmcia_socket *s = to_socket(dev);
 112        ssize_t ret = count;
 113
 114        if (!count)
 115                return -EINVAL;
 116
 117        if (!strncmp(buf, "off", 3))
 118                pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND);
 119        else {
 120                if (!strncmp(buf, "on", 2))
 121                        pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME);
 122                else
 123                        ret = -EINVAL;
 124        }
 125
 126        return ret;
 127}
 128static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
 129
 130static ssize_t pccard_store_eject(struct device *dev,
 131                                  struct device_attribute *attr,
 132                                  const char *buf, size_t count)
 133{
 134        struct pcmcia_socket *s = to_socket(dev);
 135
 136        if (!count)
 137                return -EINVAL;
 138
 139        pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT);
 140
 141        return count;
 142}
 143static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
 144
 145
 146static ssize_t pccard_show_irq_mask(struct device *dev,
 147                                    struct device_attribute *attr,
 148                                    char *buf)
 149{
 150        struct pcmcia_socket *s = to_socket(dev);
 151        return sprintf(buf, "0x%04x\n", s->irq_mask);
 152}
 153
 154static ssize_t pccard_store_irq_mask(struct device *dev,
 155                                     struct device_attribute *attr,
 156                                     const char *buf, size_t count)
 157{
 158        ssize_t ret;
 159        struct pcmcia_socket *s = to_socket(dev);
 160        u32 mask;
 161
 162        if (!count)
 163                return -EINVAL;
 164
 165        ret = sscanf(buf, "0x%x\n", &mask);
 166
 167        if (ret == 1) {
 168                mutex_lock(&s->ops_mutex);
 169                s->irq_mask &= mask;
 170                mutex_unlock(&s->ops_mutex);
 171                ret = 0;
 172        }
 173
 174        return ret ? ret : count;
 175}
 176static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
 177
 178
 179static ssize_t pccard_show_resource(struct device *dev,
 180                                    struct device_attribute *attr, char *buf)
 181{
 182        struct pcmcia_socket *s = to_socket(dev);
 183        return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
 184}
 185
 186static ssize_t pccard_store_resource(struct device *dev,
 187                                     struct device_attribute *attr,
 188                                     const char *buf, size_t count)
 189{
 190        struct pcmcia_socket *s = to_socket(dev);
 191
 192        if (!count)
 193                return -EINVAL;
 194
 195        mutex_lock(&s->ops_mutex);
 196        if (!s->resource_setup_done)
 197                s->resource_setup_done = 1;
 198        mutex_unlock(&s->ops_mutex);
 199
 200        pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
 201
 202        return count;
 203}
 204static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
 205
 206static struct attribute *pccard_socket_attributes[] = {
 207        &dev_attr_card_type.attr,
 208        &dev_attr_card_voltage.attr,
 209        &dev_attr_card_vpp.attr,
 210        &dev_attr_card_vcc.attr,
 211        &dev_attr_card_insert.attr,
 212        &dev_attr_card_pm_state.attr,
 213        &dev_attr_card_eject.attr,
 214        &dev_attr_card_irq_mask.attr,
 215        &dev_attr_available_resources_setup_done.attr,
 216        NULL,
 217};
 218
 219static const struct attribute_group socket_attrs = {
 220        .attrs = pccard_socket_attributes,
 221};
 222
 223int pccard_sysfs_add_socket(struct device *dev)
 224{
 225        return sysfs_create_group(&dev->kobj, &socket_attrs);
 226}
 227
 228void pccard_sysfs_remove_socket(struct device *dev)
 229{
 230        sysfs_remove_group(&dev->kobj, &socket_attrs);
 231}
 232
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