Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | }; |