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/cistpl.h> 31 #include <pcmcia/cisreg.h> 32 #include <pcmcia/ds.h> 33 #include "cs_internal.h" 34 35 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev) 36 37 static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr, 38 char *buf) 39 { 40 struct pcmcia_socket *s = to_socket(dev); 41 42 if (!(s->state & SOCKET_PRESENT)) 43 return -ENODEV; 44 if (s->state & SOCKET_CARDBUS) 45 return sprintf(buf, "32-bit\n"); 46 return sprintf(buf, "16-bit\n"); 47 } 48 static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL); 49 50 static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr, 51 char *buf) 52 { 53 struct pcmcia_socket *s = to_socket(dev); 54 55 if (!(s->state & SOCKET_PRESENT)) 56 return -ENODEV; 57 if (s->socket.Vcc) 58 return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, 59 s->socket.Vcc % 10); 60 return sprintf(buf, "X.XV\n"); 61 } 62 static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL); 63 64 static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr, 65 char *buf) 66 { 67 struct pcmcia_socket *s = to_socket(dev); 68 if (!(s->state & SOCKET_PRESENT)) 69 return -ENODEV; 70 return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10); 71 } 72 static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL); 73 74 static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr, 75 char *buf) 76 { 77 struct pcmcia_socket *s = to_socket(dev); 78 if (!(s->state & SOCKET_PRESENT)) 79 return -ENODEV; 80 return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10); 81 } 82 static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL); 83 84 85 static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr, 86 const char *buf, size_t count) 87 { 88 struct pcmcia_socket *s = to_socket(dev); 89 90 if (!count) 91 return -EINVAL; 92 93 pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); 94 95 return count; 96 } 97 static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert); 98 99 100 static ssize_t pccard_show_card_pm_state(struct device *dev, 101 struct device_attribute *attr, 102 char *buf) 103 { 104 struct pcmcia_socket *s = to_socket(dev); 105 return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on"); 106 } 107 108 static ssize_t pccard_store_card_pm_state(struct device *dev, 109 struct device_attribute *attr, 110 const char *buf, size_t count) 111 { 112 struct pcmcia_socket *s = to_socket(dev); 113 ssize_t ret = count; 114 115 if (!count) 116 return -EINVAL; 117 118 if (!strncmp(buf, "off", 3)) 119 pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND); 120 else { 121 if (!strncmp(buf, "on", 2)) 122 pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME); 123 else 124 ret = -EINVAL; 125 } 126 127 return ret; 128 } 129 static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state); 130 131 static ssize_t pccard_store_eject(struct device *dev, 132 struct device_attribute *attr, 133 const char *buf, size_t count) 134 { 135 struct pcmcia_socket *s = to_socket(dev); 136 137 if (!count) 138 return -EINVAL; 139 140 pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); 141 142 return count; 143 } 144 static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject); 145 146 147 static ssize_t pccard_show_irq_mask(struct device *dev, 148 struct device_attribute *attr, 149 char *buf) 150 { 151 struct pcmcia_socket *s = to_socket(dev); 152 return sprintf(buf, "0x%04x\n", s->irq_mask); 153 } 154 155 static ssize_t pccard_store_irq_mask(struct device *dev, 156 struct device_attribute *attr, 157 const char *buf, size_t count) 158 { 159 ssize_t ret; 160 struct pcmcia_socket *s = to_socket(dev); 161 u32 mask; 162 163 if (!count) 164 return -EINVAL; 165 166 ret = sscanf(buf, "0x%x\n", &mask); 167 168 if (ret == 1) { 169 mutex_lock(&s->ops_mutex); 170 s->irq_mask &= mask; 171 mutex_unlock(&s->ops_mutex); 172 ret = 0; 173 } 174 175 return ret ? ret : count; 176 } 177 static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask); 178 179 180 static ssize_t pccard_show_resource(struct device *dev, 181 struct device_attribute *attr, char *buf) 182 { 183 struct pcmcia_socket *s = to_socket(dev); 184 return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no"); 185 } 186 187 static ssize_t pccard_store_resource(struct device *dev, 188 struct device_attribute *attr, 189 const char *buf, size_t count) 190 { 191 struct pcmcia_socket *s = to_socket(dev); 192 193 if (!count) 194 return -EINVAL; 195 196 mutex_lock(&s->ops_mutex); 197 if (!s->resource_setup_done) 198 s->resource_setup_done = 1; 199 mutex_unlock(&s->ops_mutex); 200 201 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); 202 203 return count; 204 } 205 static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); 206 207 static struct attribute *pccard_socket_attributes[] = { 208 &dev_attr_card_type.attr, 209 &dev_attr_card_voltage.attr, 210 &dev_attr_card_vpp.attr, 211 &dev_attr_card_vcc.attr, 212 &dev_attr_card_insert.attr, 213 &dev_attr_card_pm_state.attr, 214 &dev_attr_card_eject.attr, 215 &dev_attr_card_irq_mask.attr, 216 &dev_attr_available_resources_setup_done.attr, 217 NULL, 218 }; 219 220 static const struct attribute_group socket_attrs = { 221 .attrs = pccard_socket_attributes, 222 }; 223 224 int pccard_sysfs_add_socket(struct device *dev) 225 { 226 return sysfs_create_group(&dev->kobj, &socket_attrs); 227 } 228 229 void pccard_sysfs_remove_socket(struct device *dev) 230 { 231 sysfs_remove_group(&dev->kobj, &socket_attrs); 232 } 233