drivers/pcmcia/socket_sysfs.c

   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/config.h>
  16 #include <linux/string.h>
  17 #include <linux/major.h>
  18 #include <linux/errno.h>
  19 #include <linux/slab.h>
  20 #include <linux/mm.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/timer.h>
  23 #include <linux/ioport.h>
  24 #include <linux/delay.h>
  25 #include <linux/pm.h>
  26 #include <linux/pci.h>
  27 #include <linux/device.h>
  28 #include <asm/system.h>
  29 #include <asm/irq.h>
  30
  31 #define IN_CARD_SERVICES
  32 #include <pcmcia/version.h>
  33 #include <pcmcia/cs_types.h>
  34 #include <pcmcia/ss.h>
  35 #include <pcmcia/cs.h>
  36 #include <pcmcia/bulkmem.h>
  37 #include <pcmcia/cistpl.h>
  38 #include <pcmcia/cisreg.h>
  39 #include <pcmcia/ds.h>
  40 #include "cs_internal.h"
  41
  42 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
  43
  44 static ssize_t pccard_show_type(struct class_device *dev, char *buf)
  45 {
  46         int val;
  47         struct pcmcia_socket *s = to_socket(dev);
  48
  49         if (!(s->state & SOCKET_PRESENT))
  50                 return -ENODEV;
  51         s->ops->get_status(s, &val);
  52         if (val & SS_CARDBUS)
  53                 return sprintf(buf, "32-bit\n");
  54         if (val & SS_DETECT)
  55                 return sprintf(buf, "16-bit\n");
  56         return sprintf(buf, "invalid\n");
  57 }
  58 static CLASS_DEVICE_ATTR(card_type, 0400, pccard_show_type, NULL);
  59
  60 static ssize_t pccard_show_voltage(struct class_device *dev, char *buf)
  61 {
  62         int val;
  63         struct pcmcia_socket *s = to_socket(dev);
  64
  65         if (!(s->state & SOCKET_PRESENT))
  66                 return -ENODEV;
  67         s->ops->get_status(s, &val);
  68         if (val & SS_3VCARD)
  69                 return sprintf(buf, "3.3V\n");
  70         if (val & SS_XVCARD)
  71                 return sprintf(buf, "X.XV\n");
  72         return sprintf(buf, "5.0V\n");
  73 }
  74 static CLASS_DEVICE_ATTR(card_voltage, 0400, pccard_show_voltage, NULL);
  75
  76 static ssize_t pccard_show_vpp(struct class_device *dev, char *buf)
  77 {
  78         struct pcmcia_socket *s = to_socket(dev);
  79         if (!(s->state & SOCKET_PRESENT))
  80                 return -ENODEV;
  81         return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
  82 }
  83 static CLASS_DEVICE_ATTR(card_vpp, 0400, pccard_show_vpp, NULL);
  84
  85 static ssize_t pccard_show_vcc(struct class_device *dev, char *buf)
  86 {
  87         struct pcmcia_socket *s = to_socket(dev);
  88         if (!(s->state & SOCKET_PRESENT))
  89                 return -ENODEV;
  90         return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
  91 }
  92 static CLASS_DEVICE_ATTR(card_vcc, 0400, pccard_show_vcc, NULL);
  93
  94
  95 static ssize_t pccard_store_insert(struct class_device *dev, const char *buf, size_t count)
  96 {
  97         ssize_t ret;
  98         struct pcmcia_socket *s = to_socket(dev);
  99
 100         if (!count)
 101                 return -EINVAL;
 102
 103         ret = pcmcia_insert_card(s);
 104
 105         return ret ? ret : count;
 106 }
 107 static CLASS_DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
 108
 109 static ssize_t pccard_store_eject(struct class_device *dev, const char *buf, size_t count)
 110 {
 111         ssize_t ret;
 112         struct pcmcia_socket *s = to_socket(dev);
 113
 114         if (!count)
 115                 return -EINVAL;
 116
 117         ret = pcmcia_eject_card(s);
 118
 119         return ret ? ret : count;
 120 }
 121 static CLASS_DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
 122
 123
 124 static ssize_t pccard_show_irq_mask(struct class_device *dev, char *buf)
 125 {
 126         struct pcmcia_socket *s = to_socket(dev);
 127         return sprintf(buf, "0x%04x\n", s->irq_mask);
 128 }
 129
 130 static ssize_t pccard_store_irq_mask(struct class_device *dev, const char *buf, size_t count)
 131 {
 132         ssize_t ret;
 133         struct pcmcia_socket *s = to_socket(dev);
 134         u32 mask;
 135
 136         if (!count)
 137                 return -EINVAL;
 138
 139         ret = sscanf (buf, "0x%x\n", &mask);
 140
 141         if (ret == 1) {
 142                 s->irq_mask &= mask;
 143                 ret = 0;
 144         }
 145
 146         return ret ? ret : count;
 147 }
 148 static CLASS_DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
 149
 150
 151 static ssize_t pccard_show_resource(struct class_device *dev, char *buf)
 152 {
 153         struct pcmcia_socket *s = to_socket(dev);
 154         return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
 155 }
 156
 157 static ssize_t pccard_store_resource(struct class_device *dev, const char *buf, size_t count)
 158 {
 159         unsigned long flags;
 160         struct pcmcia_socket *s = to_socket(dev);
 161
 162         if (!count)
 163                 return -EINVAL;
 164
 165         spin_lock_irqsave(&s->lock, flags);
 166         if (!s->resource_setup_done) {
 167                 s->resource_setup_done = 1;
 168                 spin_unlock_irqrestore(&s->lock, flags);
 169
 170                 down(&s->skt_sem);
 171                 if ((s->callback) &&
 172                     (s->state & SOCKET_PRESENT) &&
 173                     !(s->state & SOCKET_CARDBUS)) {
 174                         if (try_module_get(s->callback->owner)) {
 175                                 s->callback->resources_done(s);
 176                                 module_put(s->callback->owner);
 177                         }
 178                 }
 179                 up(&s->skt_sem);
 180
 181                 return count;
 182         }
 183         spin_unlock_irqrestore(&s->lock, flags);
 184
 185         return count;
 186 }
 187 static CLASS_DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
 188
 189
 190 static struct class_device_attribute *pccard_socket_attributes[] = {
 191         &class_device_attr_card_type,
 192         &class_device_attr_card_voltage,
 193         &class_device_attr_card_vpp,
 194         &class_device_attr_card_vcc,
 195         &class_device_attr_card_insert,
 196         &class_device_attr_card_eject,
 197         &class_device_attr_card_irq_mask,
 198         &class_device_attr_available_resources_setup_done,
 199         NULL,
 200 };
 201
 202 static int __devinit pccard_sysfs_add_socket(struct class_device *class_dev)
 203 {
 204         struct class_device_attribute **attr;
 205         int ret = 0;
 206
 207         for (attr = pccard_socket_attributes; *attr; attr++) {
 208                 ret = class_device_create_file(class_dev, *attr);
 209                 if (ret)
 210                         break;
 211         }
 212
 213         return ret;
 214 }
 215
 216 static void __devexit pccard_sysfs_remove_socket(struct class_device *class_dev)
 217 {
 218         struct class_device_attribute **attr;
 219
 220         for (attr = pccard_socket_attributes; *attr; attr++)
 221                 class_device_remove_file(class_dev, *attr);
 222 }
 223
 224 struct class_interface pccard_sysfs_interface = {
 225         .class = &pcmcia_socket_class,
 226         .add = &pccard_sysfs_add_socket,
 227         .remove = __devexit_p(&pccard_sysfs_remove_socket),
 228 };