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 <linux/suspend.h>
  29 #include <asm/system.h>
  30 #include <asm/irq.h>
  31
  32 #define IN_CARD_SERVICES
  33 #include <pcmcia/version.h>
  34 #include <pcmcia/cs_types.h>
  35 #include <pcmcia/ss.h>
  36 #include <pcmcia/cs.h>
  37 #include <pcmcia/bulkmem.h>
  38 #include <pcmcia/cistpl.h>
  39 #include <pcmcia/cisreg.h>
  40 #include <pcmcia/ds.h>
  41 #include "cs_internal.h"
  42
  43 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
  44
  45 static ssize_t pccard_show_type(struct class_device *dev, char *buf)
  46 {
  47         int val;
  48         struct pcmcia_socket *s = to_socket(dev);
  49
  50         if (!(s->state & SOCKET_PRESENT))
  51                 return -ENODEV;
  52         s->ops->get_status(s, &val);
  53         if (val & SS_CARDBUS)
  54                 return sprintf(buf, "32-bit\n");
  55         if (val & SS_DETECT)
  56                 return sprintf(buf, "16-bit\n");
  57         return sprintf(buf, "invalid\n");
  58 }
  59 static CLASS_DEVICE_ATTR(card_type, 0400, pccard_show_type, NULL);
  60
  61 static ssize_t pccard_show_voltage(struct class_device *dev, char *buf)
  62 {
  63         int val;
  64         struct pcmcia_socket *s = to_socket(dev);
  65
  66         if (!(s->state & SOCKET_PRESENT))
  67                 return -ENODEV;
  68         s->ops->get_status(s, &val);
  69         if (val & SS_3VCARD)
  70                 return sprintf(buf, "3.3V\n");
  71         if (val & SS_XVCARD)
  72                 return sprintf(buf, "X.XV\n");
  73         return sprintf(buf, "5.0V\n");
  74 }
  75 static CLASS_DEVICE_ATTR(card_voltage, 0400, pccard_show_voltage, NULL);
  76
  77 static ssize_t pccard_show_vpp(struct class_device *dev, char *buf)
  78 {
  79         struct pcmcia_socket *s = to_socket(dev);
  80         if (!(s->state & SOCKET_PRESENT))
  81                 return -ENODEV;
  82         return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
  83 }
  84 static CLASS_DEVICE_ATTR(card_vpp, 0400, pccard_show_vpp, NULL);
  85
  86 static ssize_t pccard_show_vcc(struct class_device *dev, char *buf)
  87 {
  88         struct pcmcia_socket *s = to_socket(dev);
  89         if (!(s->state & SOCKET_PRESENT))
  90                 return -ENODEV;
  91         return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
  92 }
  93 static CLASS_DEVICE_ATTR(card_vcc, 0400, pccard_show_vcc, NULL);
  94
  95
  96 static ssize_t pccard_store_insert(struct class_device *dev, const char *buf, size_t count)
  97 {
  98         ssize_t ret;
  99         struct pcmcia_socket *s = to_socket(dev);
 100
 101         if (!count)
 102                 return -EINVAL;
 103
 104         ret = pcmcia_insert_card(s);
 105
 106         return ret ? ret : count;
 107 }
 108 static CLASS_DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
 109
 110 static ssize_t pccard_store_eject(struct class_device *dev, const char *buf, size_t count)
 111 {
 112         ssize_t ret;
 113         struct pcmcia_socket *s = to_socket(dev);
 114
 115         if (!count)
 116                 return -EINVAL;
 117
 118         ret = pcmcia_eject_card(s);
 119
 120         return ret ? ret : count;
 121 }
 122 static CLASS_DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
 123
 124
 125 static struct class_device_attribute *pccard_socket_attributes[] = {
 126         &class_device_attr_card_type,
 127         &class_device_attr_card_voltage,
 128         &class_device_attr_card_vpp,
 129         &class_device_attr_card_vcc,
 130         &class_device_attr_card_insert,
 131         &class_device_attr_card_eject,
 132         NULL,
 133 };
 134
 135 static int __devinit pccard_sysfs_add_socket(struct class_device *class_dev)
 136 {
 137         struct class_device_attribute **attr;
 138         int ret = 0;
 139
 140         for (attr = pccard_socket_attributes; *attr; attr++) {
 141                 ret = class_device_create_file(class_dev, *attr);
 142                 if (ret)
 143                         break;
 144         }
 145
 146         return ret;
 147 }
 148
 149 static void __devexit pccard_sysfs_remove_socket(struct class_device *class_dev)
 150 {
 151         struct class_device_attribute **attr;
 152
 153         for (attr = pccard_socket_attributes; *attr; attr++)
 154                 class_device_remove_file(class_dev, *attr);
 155 }
 156
 157 struct class_interface pccard_sysfs_interface = {
 158         .class = &pcmcia_socket_class,
 159         .add = &pccard_sysfs_add_socket,
 160         .remove = __devexit_p(&pccard_sysfs_remove_socket),
 161 };