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 | |
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, fmt: "32-bit\n" ); |
42 | return sysfs_emit(buf, fmt: "16-bit\n" ); |
43 | } |
44 | static DEVICE_ATTR(card_type, 0444, pccard_show_type, NULL); |
45 | |
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, fmt: "%d.%dV\n" , s->socket.Vcc / 10, |
55 | s->socket.Vcc % 10); |
56 | return sysfs_emit(buf, fmt: "X.XV\n" ); |
57 | } |
58 | static DEVICE_ATTR(card_voltage, 0444, pccard_show_voltage, NULL); |
59 | |
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, fmt: "%d.%dV\n" , s->socket.Vpp / 10, s->socket.Vpp % 10); |
67 | } |
68 | static DEVICE_ATTR(card_vpp, 0444, pccard_show_vpp, NULL); |
69 | |
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, fmt: "%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 | |
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(socket: s, PCMCIA_UEVENT_INSERT); |
90 | |
91 | return count; |
92 | } |
93 | static DEVICE_ATTR(card_insert, 0200, NULL, pccard_store_insert); |
94 | |
95 | |
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, fmt: "%s\n" , s->state & SOCKET_SUSPEND ? "off" : "on" ); |
102 | } |
103 | |
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(socket: s, PCMCIA_UEVENT_SUSPEND); |
116 | else { |
117 | if (!strncmp(buf, "on" , 2)) |
118 | pcmcia_parse_uevents(socket: 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 | |
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(socket: s, PCMCIA_UEVENT_EJECT); |
137 | |
138 | return count; |
139 | } |
140 | static DEVICE_ATTR(card_eject, 0200, NULL, pccard_store_eject); |
141 | |
142 | |
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, fmt: "0x%04x\n" , s->irq_mask); |
149 | } |
150 | |
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(lock: &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 | |
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, fmt: "%s\n" , s->resource_setup_done ? "yes" : "no" ); |
181 | } |
182 | |
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(lock: &s->ops_mutex); |
196 | |
197 | pcmcia_parse_uevents(socket: 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 | |
220 | int pccard_sysfs_add_socket(struct device *dev) |
221 | { |
222 | return sysfs_create_group(kobj: &dev->kobj, grp: &socket_attrs); |
223 | } |
224 | |
225 | void pccard_sysfs_remove_socket(struct device *dev) |
226 | { |
227 | sysfs_remove_group(kobj: &dev->kobj, grp: &socket_attrs); |
228 | } |
229 | |