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