Root/drivers/pcmcia/socket_sysfs.c

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/cs_types.h>
30#include <pcmcia/ss.h>
31#include <pcmcia/cs.h>
32#include <pcmcia/cistpl.h>
33#include <pcmcia/cisreg.h>
34#include <pcmcia/ds.h>
35#include "cs_internal.h"
36
37#define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
38
39static ssize_t pccard_show_type(struct device *dev, struct device_attribute *attr,
40                char *buf)
41{
42    struct pcmcia_socket *s = to_socket(dev);
43
44    if (!(s->state & SOCKET_PRESENT))
45        return -ENODEV;
46    if (s->state & SOCKET_CARDBUS)
47        return sprintf(buf, "32-bit\n");
48    return sprintf(buf, "16-bit\n");
49}
50static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL);
51
52static ssize_t pccard_show_voltage(struct device *dev, struct device_attribute *attr,
53                   char *buf)
54{
55    struct pcmcia_socket *s = to_socket(dev);
56
57    if (!(s->state & SOCKET_PRESENT))
58        return -ENODEV;
59    if (s->socket.Vcc)
60        return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10,
61                   s->socket.Vcc % 10);
62    return sprintf(buf, "X.XV\n");
63}
64static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL);
65
66static ssize_t pccard_show_vpp(struct device *dev, struct device_attribute *attr,
67                   char *buf)
68{
69    struct pcmcia_socket *s = to_socket(dev);
70    if (!(s->state & SOCKET_PRESENT))
71        return -ENODEV;
72    return sprintf(buf, "%d.%dV\n", s->socket.Vpp / 10, s->socket.Vpp % 10);
73}
74static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL);
75
76static ssize_t pccard_show_vcc(struct device *dev, struct device_attribute *attr,
77                   char *buf)
78{
79    struct pcmcia_socket *s = to_socket(dev);
80    if (!(s->state & SOCKET_PRESENT))
81        return -ENODEV;
82    return sprintf(buf, "%d.%dV\n", s->socket.Vcc / 10, s->socket.Vcc % 10);
83}
84static DEVICE_ATTR(card_vcc, 0444, pccard_show_vcc, NULL);
85
86
87static ssize_t pccard_store_insert(struct device *dev, struct device_attribute *attr,
88                   const char *buf, size_t count)
89{
90    struct pcmcia_socket *s = to_socket(dev);
91
92    if (!count)
93        return -EINVAL;
94
95    pcmcia_parse_uevents(s, PCMCIA_UEVENT_INSERT);
96
97    return count;
98}
99static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert);
100
101
102static ssize_t pccard_show_card_pm_state(struct device *dev,
103                     struct device_attribute *attr,
104                     char *buf)
105{
106    struct pcmcia_socket *s = to_socket(dev);
107    return sprintf(buf, "%s\n", s->state & SOCKET_SUSPEND ? "off" : "on");
108}
109
110static ssize_t pccard_store_card_pm_state(struct device *dev,
111                      struct device_attribute *attr,
112                      const char *buf, size_t count)
113{
114    struct pcmcia_socket *s = to_socket(dev);
115    ssize_t ret = count;
116
117    if (!count)
118        return -EINVAL;
119
120    if (!strncmp(buf, "off", 3))
121        pcmcia_parse_uevents(s, PCMCIA_UEVENT_SUSPEND);
122    else {
123        if (!strncmp(buf, "on", 2))
124            pcmcia_parse_uevents(s, PCMCIA_UEVENT_RESUME);
125        else
126            ret = -EINVAL;
127    }
128
129    return ret;
130}
131static DEVICE_ATTR(card_pm_state, 0644, pccard_show_card_pm_state, pccard_store_card_pm_state);
132
133static ssize_t pccard_store_eject(struct device *dev,
134                  struct device_attribute *attr,
135                  const char *buf, size_t count)
136{
137    struct pcmcia_socket *s = to_socket(dev);
138
139    if (!count)
140        return -EINVAL;
141
142    pcmcia_parse_uevents(s, PCMCIA_UEVENT_EJECT);
143
144    return count;
145}
146static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject);
147
148
149static ssize_t pccard_show_irq_mask(struct device *dev,
150                    struct device_attribute *attr,
151                    char *buf)
152{
153    struct pcmcia_socket *s = to_socket(dev);
154    return sprintf(buf, "0x%04x\n", s->irq_mask);
155}
156
157static ssize_t pccard_store_irq_mask(struct device *dev,
158                     struct device_attribute *attr,
159                     const char *buf, size_t count)
160{
161    ssize_t ret;
162    struct pcmcia_socket *s = to_socket(dev);
163    u32 mask;
164
165    if (!count)
166        return -EINVAL;
167
168    ret = sscanf(buf, "0x%x\n", &mask);
169
170    if (ret == 1) {
171        mutex_lock(&s->ops_mutex);
172        s->irq_mask &= mask;
173        mutex_unlock(&s->ops_mutex);
174        ret = 0;
175    }
176
177    return ret ? ret : count;
178}
179static DEVICE_ATTR(card_irq_mask, 0600, pccard_show_irq_mask, pccard_store_irq_mask);
180
181
182static ssize_t pccard_show_resource(struct device *dev,
183                    struct device_attribute *attr, char *buf)
184{
185    struct pcmcia_socket *s = to_socket(dev);
186    return sprintf(buf, "%s\n", s->resource_setup_done ? "yes" : "no");
187}
188
189static ssize_t pccard_store_resource(struct device *dev,
190                     struct device_attribute *attr,
191                     const char *buf, size_t count)
192{
193    struct pcmcia_socket *s = to_socket(dev);
194
195    if (!count)
196        return -EINVAL;
197
198    mutex_lock(&s->ops_mutex);
199    if (!s->resource_setup_done)
200        s->resource_setup_done = 1;
201    mutex_unlock(&s->ops_mutex);
202
203    pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
204
205    return count;
206}
207static DEVICE_ATTR(available_resources_setup_done, 0600, pccard_show_resource, pccard_store_resource);
208
209static struct attribute *pccard_socket_attributes[] = {
210    &dev_attr_card_type.attr,
211    &dev_attr_card_voltage.attr,
212    &dev_attr_card_vpp.attr,
213    &dev_attr_card_vcc.attr,
214    &dev_attr_card_insert.attr,
215    &dev_attr_card_pm_state.attr,
216    &dev_attr_card_eject.attr,
217    &dev_attr_card_irq_mask.attr,
218    &dev_attr_available_resources_setup_done.attr,
219    NULL,
220};
221
222static const struct attribute_group socket_attrs = {
223    .attrs = pccard_socket_attributes,
224};
225
226int pccard_sysfs_add_socket(struct device *dev)
227{
228    return sysfs_create_group(&dev->kobj, &socket_attrs);
229}
230
231void pccard_sysfs_remove_socket(struct device *dev)
232{
233    sysfs_remove_group(&dev->kobj, &socket_attrs);
234}
235

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