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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/string_choices.h>
14#include <linux/major.h>
15#include <linux/errno.h>
16#include <linux/mm.h>
17#include <linux/interrupt.h>
18#include <linux/timer.h>
19#include <linux/ioport.h>
20#include <linux/delay.h>
21#include <linux/pm.h>
22#include <linux/device.h>
23#include <linux/mutex.h>
24#include <asm/irq.h>
25
26#include <pcmcia/ss.h>
27#include <pcmcia/cistpl.h>
28#include <pcmcia/cisreg.h>
29#include <pcmcia/ds.h>
30#include "cs_internal.h"
31
32#define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
33
34static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,
35 char *buf)
36{
37 struct pcmcia_socket *s = to_socket(dev);
38
39 if (!(s->state & SOCKET_PRESENT))
40 return -ENODEV;
41 if (s->state & SOCKET_CARDBUS)
42 return sysfs_emit(buf, "32-bit\n");
43 return sysfs_emit(buf, "16-bit\n");
44}
45static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
46
47static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,
48 char *buf)
49{
50 struct pcmcia_socket *s = to_socket(dev);
51
52 if (!(s->state & SOCKET_PRESENT))
53 return -ENODEV;
54 if (s->socket.Vcc)
55 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10,
56 s->socket.Vcc % 10);
57 return sysfs_emit(buf, "X.XV\n");
58}
59static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
60
61static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,
62 char *buf)
63{
64 struct pcmcia_socket *s = to_socket(dev);
65 if (!(s->state & SOCKET_PRESENT))
66 return -ENODEV;
67 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
68}
69static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
70
71static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,
72 char *buf)
73{
74 struct pcmcia_socket *s = to_socket(dev);
75 if (!(s->state & SOCKET_PRESENT))
76 return -ENODEV;
77 return sysfs_emit(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
78}
79static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
80
81
82static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,
83 const char *buf, size_t count)
84{
85 struct pcmcia_socket *s = to_socket(dev);
86
87 if (!count)
88 return -EINVAL;
89
90 pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT);
91
92 return count;
93}
94static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
95
96
97static ssize_t pccard_show_card_pm_state(struct device *dev,
98 struct device_attribute *attr,
99 char *buf)
100{
101 struct pcmcia_socket *s = to_socket(dev);
102 return sysfs_emit(buf, "%s\n", str_off_on(s->state & SOCKET_SUSPEND));
103}
104
105static ssize_t pccard_store_card_pm_state(struct device *dev,
106 struct device_attribute *attr,
107 const char *buf, size_t count)
108{
109 struct pcmcia_socket *s = to_socket(dev);
110 ssize_t ret = count;
111
112 if (!count)
113 return -EINVAL;
114
115 if (!strncmp(buf, "off", 3))
116 pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND);
117 else {
118 if (!strncmp(buf, "on", 2))
119 pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME);
120 else
121 ret = -EINVAL;
122 }
123
124 return ret;
125}
126static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
127
128static ssize_t pccard_store_eject(struct device *dev,
129 struct device_attribute *attr,
130 const char *buf, size_t count)
131{
132 struct pcmcia_socket *s = to_socket(dev);
133
134 if (!count)
135 return -EINVAL;
136
137 pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT);
138
139 return count;
140}
141static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
142
143
144static ssize_t pccard_show_irq_mask(struct device *dev,
145 struct device_attribute *attr,
146 char *buf)
147{
148 struct pcmcia_socket *s = to_socket(dev);
149 return sysfs_emit(buf, "0x%04x\n", s->irq_mask);
150}
151
152static ssize_t pccard_store_irq_mask(struct device *dev,
153 struct device_attribute *attr,
154 const char *buf, size_t count)
155{
156 ssize_t ret;
157 struct pcmcia_socket *s = to_socket(dev);
158 u32 mask;
159
160 if (!count)
161 return -EINVAL;
162
163 ret = sscanf(buf, "0x%x\n", &mask);
164
165 if (ret == 1) {
166 mutex_lock(&s->ops_mutex);
167 s->irq_mask &= mask;
168 mutex_unlock(&s->ops_mutex);
169 ret = 0;
170 }
171
172 return ret ? ret : count;
173}
174static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
175
176
177static ssize_t pccard_show_resource(struct device *dev,
178 struct device_attribute *attr, char *buf)
179{
180 struct pcmcia_socket *s = to_socket(dev);
181 return sysfs_emit(buf, "%s\n", str_yes_no(s->resource_setup_done));
182}
183
184static ssize_t pccard_store_resource(struct device *dev,
185 struct device_attribute *attr,
186 const char *buf, size_t count)
187{
188 struct pcmcia_socket *s = to_socket(dev);
189
190 if (!count)
191 return -EINVAL;
192
193 mutex_lock(&s->ops_mutex);
194 if (!s->resource_setup_done)
195 s->resource_setup_done = 1;
196 mutex_unlock(&s->ops_mutex);
197
198 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
199
200 return count;
201}
202static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
203
204static struct attribute *pccard_socket_attributes[] = {
205 &dev_attr_card_type.attr,
206 &dev_attr_card_voltage.attr,
207 &dev_attr_card_vpp.attr,
208 &dev_attr_card_vcc.attr,
209 &dev_attr_card_insert.attr,
210 &dev_attr_card_pm_state.attr,
211 &dev_attr_card_eject.attr,
212 &dev_attr_card_irq_mask.attr,
213 &dev_attr_available_resources_setup_done.attr,
214 NULL,
215};
216
217static const struct attribute_group socket_attrs = {
218 .attrs = pccard_socket_attributes,
219};
220
221int pccard_sysfs_add_socket(struct device *dev)
222{
223 return sysfs_create_group(&dev->kobj, &socket_attrs);
224}
225
226void pccard_sysfs_remove_socket(struct device *dev)
227{
228 sysfs_remove_group(&dev->kobj, &socket_attrs);
229}