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/system.h> 27 #include <asm/irq.h> 28 29 #include <pcmcia/ss.h> 30 #include <pcmcia/cs.h> 31 #include <pcmcia/cistpl.h> 32 #include <pcmcia/cisreg.h> 33 #include <pcmcia/ds.h> 34 #include "cs_internal.h" 35 36 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev) 37 38 static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr, 39 char *buf) 40 { 41 struct pcmcia_socket *s = to_socket(dev); 42 43 if (!(s->state & SOCKET_PRESENT)) 44 return -ENODEV; 45 if (s->state & SOCKET_CARDBUS) 46 return sprintf(buf, "32-bit\n"); 47 return sprintf(buf, "16-bit\n"); 48 } 49 static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL); 50 51 static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr, 52 char *buf) 53 { 54 struct pcmcia_socket *s = to_socket(dev); 55 56 if (!(s->state & SOCKET_PRESENT)) 57 return -ENODEV; 58 if (s->socket.Vcc) 59 return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, 60 s->socket.Vcc % 10); 61 return sprintf(buf, "X.XV\n"); 62 } 63 static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL); 64 65 static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr, 66 char *buf) 67 { 68 struct pcmcia_socket *s = to_socket(dev); 69 if (!(s->state & SOCKET_PRESENT)) 70 return -ENODEV; 71 return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10); 72 } 73 static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL); 74 75 static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr, 76 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.Vcc / 10, s->socket.Vcc % 10); 82 } 83 static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL); 84 85 86 static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr, 87 const char *buf, size_t count) 88 { 89 struct pcmcia_socket *s = to_socket(dev); 90 91 if (!count) 92 return -EINVAL; 93 94 pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); 95 96 return count; 97 } 98 static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert); 99 100 101 static ssize_t pccard_show_card_pm_state(struct device *dev, 102 struct device_attribute *attr, 103 char *buf) 104 { 105 struct pcmcia_socket *s = to_socket(dev); 106 return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on"); 107 } 108 109 static ssize_t pccard_store_card_pm_state(struct device *dev, 110 struct device_attribute *attr, 111 const char *buf, size_t count) 112 { 113 struct pcmcia_socket *s = to_socket(dev); 114 ssize_t ret = count; 115 116 if (!count) 117 return -EINVAL; 118 119 if (!strncmp(buf, "off", 3)) 120 pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND); 121 else { 122 if (!strncmp(buf, "on", 2)) 123 pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME); 124 else 125 ret = -EINVAL; 126 } 127 128 return ret; 129 } 130 static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state); 131 132 static ssize_t pccard_store_eject(struct device *dev, 133 struct device_attribute *attr, 134 const char *buf, size_t count) 135 { 136 struct pcmcia_socket *s = to_socket(dev); 137 138 if (!count) 139 return -EINVAL; 140 141 pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); 142 143 return count; 144 } 145 static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject); 146 147 148 static ssize_t pccard_show_irq_mask(struct device *dev, 149 struct device_attribute *attr, 150 char *buf) 151 { 152 struct pcmcia_socket *s = to_socket(dev); 153 return sprintf(buf, "0x%04x\n", s->irq_mask); 154 } 155 156 static ssize_t pccard_store_irq_mask(struct device *dev, 157 struct device_attribute *attr, 158 const char *buf, size_t count) 159 { 160 ssize_t ret; 161 struct pcmcia_socket *s = to_socket(dev); 162 u32 mask; 163 164 if (!count) 165 return -EINVAL; 166 167 ret = sscanf(buf, "0x%x\n", &mask); 168 169 if (ret == 1) { 170 mutex_lock(&s->ops_mutex); 171 s->irq_mask &= mask; 172 mutex_unlock(&s->ops_mutex); 173 ret = 0; 174 } 175 176 return ret ? ret : count; 177 } 178 static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask); 179 180 181 static ssize_t pccard_show_resource(struct device *dev, 182 struct device_attribute *attr, char *buf) 183 { 184 struct pcmcia_socket *s = to_socket(dev); 185 return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no"); 186 } 187 188 static ssize_t pccard_store_resource(struct device *dev, 189 struct device_attribute *attr, 190 const char *buf, size_t count) 191 { 192 struct pcmcia_socket *s = to_socket(dev); 193 194 if (!count) 195 return -EINVAL; 196 197 mutex_lock(&s->ops_mutex); 198 if (!s->resource_setup_done) 199 s->resource_setup_done = 1; 200 mutex_unlock(&s->ops_mutex); 201 202 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); 203 204 return count; 205 } 206 static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); 207 208 static struct attribute *pccard_socket_attributes[] = { 209 &dev_attr_card_type.attr, 210 &dev_attr_card_voltage.attr, 211 &dev_attr_card_vpp.attr, 212 &dev_attr_card_vcc.attr, 213 &dev_attr_card_insert.attr, 214 &dev_attr_card_pm_state.attr, 215 &dev_attr_card_eject.attr, 216 &dev_attr_card_irq_mask.attr, 217 &dev_attr_available_resources_setup_done.attr, 218 NULL, 219 }; 220 221 static const struct attribute_group socket_attrs = { 222 .attrs = pccard_socket_attributes, 223 }; 224 225 int pccard_sysfs_add_socket(struct device *dev) 226 { 227 return sysfs_create_group(&dev->kobj, &socket_attrs); 228 } 229 230 void pccard_sysfs_remove_socket(struct device *dev) 231 { 232 sysfs_remove_group(&dev->kobj, &socket_attrs); 233 } 234