V4L/DVB (10135): v4l2: introduce v4l2_file_operations.
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / radio / radio-rtrack2.c
CommitLineData
1da177e4 1/* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
4286c6f6 2 *
1da177e4 3 * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
d9b01449 4 * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk>
1da177e4
LT
5 * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
6 *
7 * TODO: Allow for more than one of these foolish entities :-)
8 *
f8c559f8 9 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4
LT
10 */
11
12#include <linux/module.h> /* Modules */
13#include <linux/init.h> /* Initdata */
fb911ee8 14#include <linux/ioport.h> /* request_region */
1da177e4
LT
15#include <linux/delay.h> /* udelay */
16#include <asm/io.h> /* outb, outb_p */
17#include <asm/uaccess.h> /* copy to/from user */
f8c559f8 18#include <linux/videodev2.h> /* kernel radio structs */
5e87efa3 19#include <media/v4l2-common.h>
35ea11ff 20#include <media/v4l2-ioctl.h>
1da177e4
LT
21#include <linux/spinlock.h>
22
f8c559f8
MCC
23#include <linux/version.h> /* for KERNEL_VERSION MACRO */
24#define RADIO_VERSION KERNEL_VERSION(0,0,2)
25
26static struct v4l2_queryctrl radio_qctrl[] = {
27 {
28 .id = V4L2_CID_AUDIO_MUTE,
29 .name = "Mute",
30 .minimum = 0,
31 .maximum = 1,
32 .default_value = 1,
33 .type = V4L2_CTRL_TYPE_BOOLEAN,
34 },{
35 .id = V4L2_CID_AUDIO_VOLUME,
36 .name = "Volume",
37 .minimum = 0,
38 .maximum = 65535,
39 .step = 65535,
40 .default_value = 0xff,
41 .type = V4L2_CTRL_TYPE_INTEGER,
42 }
43};
44
1da177e4
LT
45#ifndef CONFIG_RADIO_RTRACK2_PORT
46#define CONFIG_RADIO_RTRACK2_PORT -1
47#endif
48
4286c6f6 49static int io = CONFIG_RADIO_RTRACK2_PORT;
1da177e4
LT
50static int radio_nr = -1;
51static spinlock_t lock;
52
53struct rt_device
54{
3ca685aa 55 unsigned long in_use;
1da177e4
LT
56 int port;
57 unsigned long curfreq;
58 int muted;
59};
60
61
62/* local things */
63
64static void rt_mute(struct rt_device *dev)
65{
4286c6f6 66 if(dev->muted)
1da177e4
LT
67 return;
68 spin_lock(&lock);
69 outb(1, io);
70 spin_unlock(&lock);
71 dev->muted = 1;
72}
73
74static void rt_unmute(struct rt_device *dev)
75{
76 if(dev->muted == 0)
77 return;
78 spin_lock(&lock);
79 outb(0, io);
80 spin_unlock(&lock);
81 dev->muted = 0;
82}
83
84static void zero(void)
85{
4286c6f6 86 outb_p(1, io);
1da177e4
LT
87 outb_p(3, io);
88 outb_p(1, io);
89}
90
91static void one(void)
92{
4286c6f6 93 outb_p(5, io);
1da177e4
LT
94 outb_p(7, io);
95 outb_p(5, io);
96}
97
98static int rt_setfreq(struct rt_device *dev, unsigned long freq)
99{
100 int i;
101
102 freq = freq / 200 + 856;
4286c6f6 103
1da177e4
LT
104 spin_lock(&lock);
105
106 outb_p(0xc8, io);
107 outb_p(0xc9, io);
108 outb_p(0xc9, io);
109
110 for (i = 0; i < 10; i++)
111 zero ();
112
113 for (i = 14; i >= 0; i--)
114 if (freq & (1 << i))
115 one ();
116 else
117 zero ();
118
119 outb_p(0xc8, io);
120 if (!dev->muted)
121 outb_p(0, io);
4286c6f6 122
1da177e4
LT
123 spin_unlock(&lock);
124 return 0;
125}
126
25f30389
DL
127static int vidioc_querycap(struct file *file, void *priv,
128 struct v4l2_capability *v)
129{
130 strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));
131 strlcpy(v->card, "RadioTrack II", sizeof(v->card));
132 sprintf(v->bus_info, "ISA");
133 v->version = RADIO_VERSION;
134 v->capabilities = V4L2_CAP_TUNER;
135 return 0;
136}
137
138static int vidioc_s_tuner(struct file *file, void *priv,
139 struct v4l2_tuner *v)
140{
141 if (v->index > 0)
142 return -EINVAL;
143
144 return 0;
145}
146
1da177e4
LT
147static int rt_getsigstr(struct rt_device *dev)
148{
149 if (inb(io) & 2) /* bit set = no signal present */
150 return 0;
151 return 1; /* signal present */
152}
153
25f30389
DL
154static int vidioc_g_tuner(struct file *file, void *priv,
155 struct v4l2_tuner *v)
1da177e4 156{
c170ecf4 157 struct rt_device *rt = video_drvdata(file);
25f30389
DL
158
159 if (v->index > 0)
160 return -EINVAL;
161
162 strcpy(v->name, "FM");
163 v->type = V4L2_TUNER_RADIO;
164 v->rangelow = (88*16000);
165 v->rangehigh = (108*16000);
166 v->rxsubchans = V4L2_TUNER_SUB_MONO;
167 v->capability = V4L2_TUNER_CAP_LOW;
168 v->audmode = V4L2_TUNER_MODE_MONO;
169 v->signal = 0xFFFF*rt_getsigstr(rt);
170 return 0;
171}
f8c559f8 172
25f30389
DL
173static int vidioc_s_frequency(struct file *file, void *priv,
174 struct v4l2_frequency *f)
175{
c170ecf4 176 struct rt_device *rt = video_drvdata(file);
f8c559f8 177
25f30389
DL
178 rt->curfreq = f->frequency;
179 rt_setfreq(rt, rt->curfreq);
180 return 0;
181}
f8c559f8 182
25f30389
DL
183static int vidioc_g_frequency(struct file *file, void *priv,
184 struct v4l2_frequency *f)
185{
c170ecf4 186 struct rt_device *rt = video_drvdata(file);
f8c559f8 187
25f30389
DL
188 f->type = V4L2_TUNER_RADIO;
189 f->frequency = rt->curfreq;
190 return 0;
191}
f8c559f8 192
25f30389
DL
193static int vidioc_queryctrl(struct file *file, void *priv,
194 struct v4l2_queryctrl *qc)
195{
196 int i;
f8c559f8 197
25f30389
DL
198 for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
199 if (qc->id && qc->id == radio_qctrl[i].id) {
200 memcpy(qc, &(radio_qctrl[i]),
201 sizeof(*qc));
1da177e4
LT
202 return 0;
203 }
25f30389
DL
204 }
205 return -EINVAL;
206}
f8c559f8 207
25f30389
DL
208static int vidioc_g_ctrl(struct file *file, void *priv,
209 struct v4l2_control *ctrl)
210{
c170ecf4 211 struct rt_device *rt = video_drvdata(file);
f8c559f8 212
25f30389
DL
213 switch (ctrl->id) {
214 case V4L2_CID_AUDIO_MUTE:
215 ctrl->value = rt->muted;
216 return 0;
217 case V4L2_CID_AUDIO_VOLUME:
218 if (rt->muted)
219 ctrl->value = 0;
220 else
221 ctrl->value = 65535;
222 return 0;
1da177e4 223 }
25f30389 224 return -EINVAL;
1da177e4
LT
225}
226
25f30389
DL
227static int vidioc_s_ctrl(struct file *file, void *priv,
228 struct v4l2_control *ctrl)
1da177e4 229{
c170ecf4 230 struct rt_device *rt = video_drvdata(file);
25f30389
DL
231
232 switch (ctrl->id) {
233 case V4L2_CID_AUDIO_MUTE:
234 if (ctrl->value)
235 rt_mute(rt);
236 else
237 rt_unmute(rt);
238 return 0;
239 case V4L2_CID_AUDIO_VOLUME:
240 if (ctrl->value)
241 rt_unmute(rt);
242 else
243 rt_mute(rt);
244 return 0;
245 }
246 return -EINVAL;
1da177e4
LT
247}
248
8b811cf0
DL
249static int vidioc_g_audio(struct file *file, void *priv,
250 struct v4l2_audio *a)
251{
252 if (a->index > 1)
253 return -EINVAL;
254
255 strcpy(a->name, "Radio");
256 a->capability = V4L2_AUDCAP_STEREO;
257 return 0;
258}
259
260static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
261{
262 *i = 0;
263 return 0;
264}
265
266static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
267{
268 if (i != 0)
269 return -EINVAL;
270 return 0;
271}
272
273static int vidioc_s_audio(struct file *file, void *priv,
274 struct v4l2_audio *a)
275{
276 if (a->index != 0)
277 return -EINVAL;
278 return 0;
279}
280
1da177e4
LT
281static struct rt_device rtrack2_unit;
282
bec43661 283static int rtrack2_exclusive_open(struct file *file)
3ca685aa
HV
284{
285 return test_and_set_bit(0, &rtrack2_unit.in_use) ? -EBUSY : 0;
286}
287
bec43661 288static int rtrack2_exclusive_release(struct file *file)
3ca685aa
HV
289{
290 clear_bit(0, &rtrack2_unit.in_use);
291 return 0;
292}
293
bec43661 294static const struct v4l2_file_operations rtrack2_fops = {
1da177e4 295 .owner = THIS_MODULE,
3ca685aa
HV
296 .open = rtrack2_exclusive_open,
297 .release = rtrack2_exclusive_release,
25f30389 298 .ioctl = video_ioctl2,
1da177e4
LT
299};
300
a399810c 301static const struct v4l2_ioctl_ops rtrack2_ioctl_ops = {
25f30389
DL
302 .vidioc_querycap = vidioc_querycap,
303 .vidioc_g_tuner = vidioc_g_tuner,
304 .vidioc_s_tuner = vidioc_s_tuner,
305 .vidioc_g_frequency = vidioc_g_frequency,
306 .vidioc_s_frequency = vidioc_s_frequency,
307 .vidioc_queryctrl = vidioc_queryctrl,
308 .vidioc_g_ctrl = vidioc_g_ctrl,
309 .vidioc_s_ctrl = vidioc_s_ctrl,
8b811cf0
DL
310 .vidioc_g_audio = vidioc_g_audio,
311 .vidioc_s_audio = vidioc_s_audio,
312 .vidioc_g_input = vidioc_g_input,
313 .vidioc_s_input = vidioc_s_input,
1da177e4
LT
314};
315
a399810c 316static struct video_device rtrack2_radio = {
a399810c 317 .name = "RadioTrack II radio",
a399810c
HV
318 .fops = &rtrack2_fops,
319 .ioctl_ops = &rtrack2_ioctl_ops,
aa5e90af 320 .release = video_device_release_empty,
a399810c
HV
321};
322
1da177e4
LT
323static int __init rtrack2_init(void)
324{
325 if(io==-1)
326 {
327 printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");
328 return -EINVAL;
329 }
4286c6f6 330 if (!request_region(io, 4, "rtrack2"))
1da177e4
LT
331 {
332 printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);
333 return -EBUSY;
334 }
335
601e9444 336 video_set_drvdata(&rtrack2_radio, &rtrack2_unit);
1da177e4 337
4286c6f6 338 spin_lock_init(&lock);
cba99ae8 339 if (video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
1da177e4
LT
340 release_region(io, 4);
341 return -EINVAL;
342 }
4286c6f6 343
1da177e4
LT
344 printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");
345
4286c6f6 346 /* mute card - prevents noisy bootups */
1da177e4
LT
347 outb(1, io);
348 rtrack2_unit.muted = 1;
349
350 return 0;
351}
352
353MODULE_AUTHOR("Ben Pfaff");
354MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
355MODULE_LICENSE("GPL");
356
357module_param(io, int, 0);
358MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
359module_param(radio_nr, int, 0);
360
361static void __exit rtrack2_cleanup_module(void)
362{
363 video_unregister_device(&rtrack2_radio);
364 release_region(io,4);
365}
366
367module_init(rtrack2_init);
368module_exit(rtrack2_cleanup_module);
369
370/*
371 Local variables:
372 compile-command: "mmake"
373 End:
374*/