1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * socket_sysfs.c -- most of socket-related sysfs output
4 *
5 * (C) 2003 - 2004 Dominik Brodowski
6 */
7
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>
15 #include <linux/mm.h>
16 #include <linux/interrupt.h>
17 #include <linux/timer.h>
18 #include <linux/ioport.h>
19 #include <linux/delay.h>
20 #include <linux/pm.h>
21 #include <linux/device.h>
22 #include <linux/mutex.h>
23 #include <asm/irq.h>
24
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"
30
31 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
32
pccard_show_type(struct device * dev,struct device_attribute * attr,char * buf)33 static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,
34 char *buf)
35 {
36 struct pcmcia_socket *s = to_socket(dev);
37
38 if (!(s->state & SOCKET_PRESENT))
39 return -ENODEV;
40 if (s->state & SOCKET_CARDBUS)
41 return sysfs_emit(buf, "32-bit\n");
42 return sysfs_emit(buf, "16-bit\n");
43 }
44 static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
45
pccard_show_voltage(struct device * dev,struct device_attribute * attr,char * buf)46 static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,
47 char *buf)
48 {
49 struct pcmcia_socket *s = to_socket(dev);
50
51 if (!(s->state & SOCKET_PRESENT))
52 return -ENODEV;
53 if (s->socket.Vcc)
54 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10,
55 s->socket.Vcc % 10);
56 return sysfs_emit(buf, "X.XV\n");
57 }
58 static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
59
pccard_show_vpp(struct device * dev,struct device_attribute * attr,char * buf)60 static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,
61 char *buf)
62 {
63 struct pcmcia_socket *s = to_socket(dev);
64 if (!(s->state & SOCKET_PRESENT))
65 return -ENODEV;
66 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
67 }
68 static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
69
pccard_show_vcc(struct device * dev,struct device_attribute * attr,char * buf)70 static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,
71 char *buf)
72 {
73 struct pcmcia_socket *s = to_socket(dev);
74 if (!(s->state & SOCKET_PRESENT))
75 return -ENODEV;
76 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
77 }
78 static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
79
80
pccard_store_insert(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)81 static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,
82 const char *buf, size_t count)
83 {
84 struct pcmcia_socket *s = to_socket(dev);
85
86 if (!count)
87 return -EINVAL;
88
89 pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT);
90
91 return count;
92 }
93 static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
94
95
pccard_show_card_pm_state(struct device * dev,struct device_attribute * attr,char * buf)96 static ssize_t pccard_show_card_pm_state(struct device *dev,
97 struct device_attribute *attr,
98 char *buf)
99 {
100 struct pcmcia_socket *s = to_socket(dev);
101 return sysfs_emit(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
102 }
103
pccard_store_card_pm_state(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)104 static ssize_t pccard_store_card_pm_state(struct device *dev,
105 struct device_attribute *attr,
106 const char *buf, size_t count)
107 {
108 struct pcmcia_socket *s = to_socket(dev);
109 ssize_t ret = count;
110
111 if (!count)
112 return -EINVAL;
113
114 if (!strncmp(buf, "off", 3))
115 pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND);
116 else {
117 if (!strncmp(buf, "on", 2))
118 pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME);
119 else
120 ret = -EINVAL;
121 }
122
123 return ret;
124 }
125 static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
126
pccard_store_eject(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)127 static ssize_t pccard_store_eject(struct device *dev,
128 struct device_attribute *attr,
129 const char *buf, size_t count)
130 {
131 struct pcmcia_socket *s = to_socket(dev);
132
133 if (!count)
134 return -EINVAL;
135
136 pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT);
137
138 return count;
139 }
140 static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
141
142
pccard_show_irq_mask(struct device * dev,struct device_attribute * attr,char * buf)143 static ssize_t pccard_show_irq_mask(struct device *dev,
144 struct device_attribute *attr,
145 char *buf)
146 {
147 struct pcmcia_socket *s = to_socket(dev);
148 return sysfs_emit(buf, "0x%04x\n", s->irq_mask);
149 }
150
pccard_store_irq_mask(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)151 static ssize_t pccard_store_irq_mask(struct device *dev,
152 struct device_attribute *attr,
153 const char *buf, size_t count)
154 {
155 ssize_t ret;
156 struct pcmcia_socket *s = to_socket(dev);
157 u32 mask;
158
159 if (!count)
160 return -EINVAL;
161
162 ret = sscanf(buf, "0x%x\n", &mask);
163
164 if (ret == 1) {
165 mutex_lock(&s->ops_mutex);
166 s->irq_mask &= mask;
167 mutex_unlock(&s->ops_mutex);
168 ret = 0;
169 }
170
171 return ret ? ret : count;
172 }
173 static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
174
175
pccard_show_resource(struct device * dev,struct device_attribute * attr,char * buf)176 static ssize_t pccard_show_resource(struct device *dev,
177 struct device_attribute *attr, char *buf)
178 {
179 struct pcmcia_socket *s = to_socket(dev);
180 return sysfs_emit(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
181 }
182
pccard_store_resource(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)183 static ssize_t pccard_store_resource(struct device *dev,
184 struct device_attribute *attr,
185 const char *buf, size_t count)
186 {
187 struct pcmcia_socket *s = to_socket(dev);
188
189 if (!count)
190 return -EINVAL;
191
192 mutex_lock(&s->ops_mutex);
193 if (!s->resource_setup_done)
194 s->resource_setup_done = 1;
195 mutex_unlock(&s->ops_mutex);
196
197 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
198
199 return count;
200 }
201 static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
202
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,
213 NULL,
214 };
215
216 static const struct attribute_group socket_attrs = {
217 .attrs = pccard_socket_attributes,
218 };
219
pccard_sysfs_add_socket(struct device * dev)220 int pccard_sysfs_add_socket(struct device *dev)
221 {
222 return sysfs_create_group(&dev->kobj, &socket_attrs);
223 }
224
pccard_sysfs_remove_socket(struct device * dev)225 void pccard_sysfs_remove_socket(struct device *dev)
226 {
227 sysfs_remove_group(&dev->kobj, &socket_attrs);
228 }
229