1 // SPDX-License-Identifier: GPL-2.0-only
3 * socket_sysfs.c -- most of socket-related sysfs output
5 * (C) 2003 - 2004 Dominik Brodowski
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/string.h>
13 #include <linux/major.h>
14 #include <linux/errno.h>
16 #include <linux/interrupt.h>
17 #include <linux/timer.h>
18 #include <linux/ioport.h>
19 #include <linux/delay.h>
21 #include <linux/device.h>
22 #include <linux/mutex.h>
25 #include <pcmcia/ss.h>
26 #include <pcmcia/cistpl.h>
27 #include <pcmcia/cisreg.h>
28 #include <pcmcia/ds.h>
29 #include "cs_internal.h"
31 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
33 static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,
36 struct pcmcia_socket *s = to_socket(dev);
38 if (!(s->state & SOCKET_PRESENT))
40 if (s->state & SOCKET_CARDBUS)
41 return sysfs_emit(buf, "32-bit\n");
42 return sysfs_emit(buf, "16-bit\n");
44 static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
46 static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,
49 struct pcmcia_socket *s = to_socket(dev);
51 if (!(s->state & SOCKET_PRESENT))
54 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10,
56 return sysfs_emit(buf, "X.XV\n");
58 static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
60 static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,
63 struct pcmcia_socket *s = to_socket(dev);
64 if (!(s->state & SOCKET_PRESENT))
66 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
68 static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
70 static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,
73 struct pcmcia_socket *s = to_socket(dev);
74 if (!(s->state & SOCKET_PRESENT))
76 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
78 static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
81 static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,
82 const char *buf, size_t count)
84 struct pcmcia_socket *s = to_socket(dev);
89 pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT);
93 static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
96 static ssize_t pccard_show_card_pm_state(struct device *dev,
97 struct device_attribute *attr,
100 struct pcmcia_socket *s = to_socket(dev);
101 return sysfs_emit(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
104 static ssize_t pccard_store_card_pm_state(struct device *dev,
105 struct device_attribute *attr,
106 const char *buf, size_t count)
108 struct pcmcia_socket *s = to_socket(dev);
114 if (!strncmp(buf, "off", 3))
115 pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND);
117 if (!strncmp(buf, "on", 2))
118 pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME);
125 static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
127 static ssize_t pccard_store_eject(struct device *dev,
128 struct device_attribute *attr,
129 const char *buf, size_t count)
131 struct pcmcia_socket *s = to_socket(dev);
136 pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT);
140 static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
143 static ssize_t pccard_show_irq_mask(struct device *dev,
144 struct device_attribute *attr,
147 struct pcmcia_socket *s = to_socket(dev);
148 return sysfs_emit(buf, "0x%04x\n", s->irq_mask);
151 static ssize_t pccard_store_irq_mask(struct device *dev,
152 struct device_attribute *attr,
153 const char *buf, size_t count)
156 struct pcmcia_socket *s = to_socket(dev);
162 ret = sscanf(buf, "0x%x\n", &mask);
165 mutex_lock(&s->ops_mutex);
167 mutex_unlock(&s->ops_mutex);
171 return ret ? ret : count;
173 static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
176 static ssize_t pccard_show_resource(struct device *dev,
177 struct device_attribute *attr, char *buf)
179 struct pcmcia_socket *s = to_socket(dev);
180 return sysfs_emit(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
183 static ssize_t pccard_store_resource(struct device *dev,
184 struct device_attribute *attr,
185 const char *buf, size_t count)
187 struct pcmcia_socket *s = to_socket(dev);
192 mutex_lock(&s->ops_mutex);
193 if (!s->resource_setup_done)
194 s->resource_setup_done = 1;
195 mutex_unlock(&s->ops_mutex);
197 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
201 static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
203 static struct attribute *pccard_socket_attributes[] = {
204 &dev_attr_card_type.attr,
205 &dev_attr_card_voltage.attr,
206 &dev_attr_card_vpp.attr,
207 &dev_attr_card_vcc.attr,
208 &dev_attr_card_insert.attr,
209 &dev_attr_card_pm_state.attr,
210 &dev_attr_card_eject.attr,
211 &dev_attr_card_irq_mask.attr,
212 &dev_attr_available_resources_setup_done.attr,
216 static const struct attribute_group socket_attrs = {
217 .attrs = pccard_socket_attributes,
220 int pccard_sysfs_add_socket(struct device *dev)
222 return sysfs_create_group(&dev->kobj, &socket_attrs);
225 void pccard_sysfs_remove_socket(struct device *dev)
227 sysfs_remove_group(&dev->kobj, &socket_attrs);