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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/irq.h> | |
27 | ||
28 | #include <pcmcia/ss.h> | |
29 | #include <pcmcia/cistpl.h> | |
30 | #include <pcmcia/cisreg.h> | |
31 | #include <pcmcia/ds.h> | |
32 | #include "cs_internal.h" | |
33 | ||
34 | #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev) | |
35 | ||
36 | static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr, | |
37 | char *buf) | |
38 | { | |
39 | struct pcmcia_socket *s = to_socket(dev); | |
40 | ||
41 | if (!(s->state & SOCKET_PRESENT)) | |
42 | return -ENODEV; | |
43 | if (s->state & SOCKET_CARDBUS) | |
44 | return sprintf(buf, "32-bit\n"); | |
45 | return sprintf(buf, "16-bit\n"); | |
46 | } | |
47 | static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL); | |
48 | ||
49 | static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr, | |
50 | char *buf) | |
51 | { | |
52 | struct pcmcia_socket *s = to_socket(dev); | |
53 | ||
54 | if (!(s->state & SOCKET_PRESENT)) | |
55 | return -ENODEV; | |
56 | if (s->socket.Vcc) | |
57 | return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, | |
58 | s->socket.Vcc % 10); | |
59 | return sprintf(buf, "X.XV\n"); | |
60 | } | |
61 | static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL); | |
62 | ||
63 | static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr, | |
64 | char *buf) | |
65 | { | |
66 | struct pcmcia_socket *s = to_socket(dev); | |
67 | if (!(s->state & SOCKET_PRESENT)) | |
68 | return -ENODEV; | |
69 | return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10); | |
70 | } | |
71 | static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL); | |
72 | ||
73 | static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr, | |
74 | char *buf) | |
75 | { | |
76 | struct pcmcia_socket *s = to_socket(dev); | |
77 | if (!(s->state & SOCKET_PRESENT)) | |
78 | return -ENODEV; | |
79 | return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10); | |
80 | } | |
81 | static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL); | |
82 | ||
83 | ||
84 | static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr, | |
85 | const char *buf, size_t count) | |
86 | { | |
87 | struct pcmcia_socket *s = to_socket(dev); | |
88 | ||
89 | if (!count) | |
90 | return -EINVAL; | |
91 | ||
92 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT); | |
93 | ||
94 | return count; | |
95 | } | |
96 | static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert); | |
97 | ||
98 | ||
99 | static ssize_t pccard_show_card_pm_state(struct device *dev, | |
100 | struct device_attribute *attr, | |
101 | char *buf) | |
102 | { | |
103 | struct pcmcia_socket *s = to_socket(dev); | |
104 | return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on"); | |
105 | } | |
106 | ||
107 | static ssize_t pccard_store_card_pm_state(struct device *dev, | |
108 | struct device_attribute *attr, | |
109 | const char *buf, size_t count) | |
110 | { | |
111 | struct pcmcia_socket *s = to_socket(dev); | |
112 | ssize_t ret = count; | |
113 | ||
114 | if (!count) | |
115 | return -EINVAL; | |
116 | ||
117 | if (!strncmp(buf, "off", 3)) | |
118 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND); | |
119 | else { | |
120 | if (!strncmp(buf, "on", 2)) | |
121 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME); | |
122 | else | |
123 | ret = -EINVAL; | |
124 | } | |
125 | ||
126 | return ret; | |
127 | } | |
128 | static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state); | |
129 | ||
130 | static ssize_t pccard_store_eject(struct device *dev, | |
131 | struct device_attribute *attr, | |
132 | const char *buf, size_t count) | |
133 | { | |
134 | struct pcmcia_socket *s = to_socket(dev); | |
135 | ||
136 | if (!count) | |
137 | return -EINVAL; | |
138 | ||
139 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT); | |
140 | ||
141 | return count; | |
142 | } | |
143 | static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject); | |
144 | ||
145 | ||
146 | static ssize_t pccard_show_irq_mask(struct device *dev, | |
147 | struct device_attribute *attr, | |
148 | char *buf) | |
149 | { | |
150 | struct pcmcia_socket *s = to_socket(dev); | |
151 | return sprintf(buf, "0x%04x\n", s->irq_mask); | |
152 | } | |
153 | ||
154 | static ssize_t pccard_store_irq_mask(struct device *dev, | |
155 | struct device_attribute *attr, | |
156 | const char *buf, size_t count) | |
157 | { | |
158 | ssize_t ret; | |
159 | struct pcmcia_socket *s = to_socket(dev); | |
160 | u32 mask; | |
161 | ||
162 | if (!count) | |
163 | return -EINVAL; | |
164 | ||
165 | ret = sscanf(buf, "0x%x\n", &mask); | |
166 | ||
167 | if (ret == 1) { | |
168 | mutex_lock(&s->ops_mutex); | |
169 | s->irq_mask &= mask; | |
170 | mutex_unlock(&s->ops_mutex); | |
171 | ret = 0; | |
172 | } | |
173 | ||
174 | return ret ? ret : count; | |
175 | } | |
176 | static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask); | |
177 | ||
178 | ||
179 | static ssize_t pccard_show_resource(struct device *dev, | |
180 | struct device_attribute *attr, char *buf) | |
181 | { | |
182 | struct pcmcia_socket *s = to_socket(dev); | |
183 | return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no"); | |
184 | } | |
185 | ||
186 | static ssize_t pccard_store_resource(struct device *dev, | |
187 | struct device_attribute *attr, | |
188 | const char *buf, size_t count) | |
189 | { | |
190 | struct pcmcia_socket *s = to_socket(dev); | |
191 | ||
192 | if (!count) | |
193 | return -EINVAL; | |
194 | ||
195 | mutex_lock(&s->ops_mutex); | |
196 | if (!s->resource_setup_done) | |
197 | s->resource_setup_done = 1; | |
198 | mutex_unlock(&s->ops_mutex); | |
199 | ||
200 | pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); | |
201 | ||
202 | return count; | |
203 | } | |
204 | static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource); | |
205 | ||
206 | static struct attribute *pccard_socket_attributes[] = { | |
207 | &dev_attr_card_type.attr, | |
208 | &dev_attr_card_voltage.attr, | |
209 | &dev_attr_card_vpp.attr, | |
210 | &dev_attr_card_vcc.attr, | |
211 | &dev_attr_card_insert.attr, | |
212 | &dev_attr_card_pm_state.attr, | |
213 | &dev_attr_card_eject.attr, | |
214 | &dev_attr_card_irq_mask.attr, | |
215 | &dev_attr_available_resources_setup_done.attr, | |
216 | NULL, | |
217 | }; | |
218 | ||
219 | static const struct attribute_group socket_attrs = { | |
220 | .attrs = pccard_socket_attributes, | |
221 | }; | |
222 | ||
223 | int pccard_sysfs_add_socket(struct device *dev) | |
224 | { | |
225 | return sysfs_create_group(&dev->kobj, &socket_attrs); | |
226 | } | |
227 | ||
228 | void pccard_sysfs_remove_socket(struct device *dev) | |
229 | { | |
230 | sysfs_remove_group(&dev->kobj, &socket_attrs); | |
231 | } |