blob: 6f9ecc359356c1cc20f93210d5558f072ca66c76 [file] [log] [blame]
Mauro Carvalho Chehab4286c6f2006-04-08 16:06:16 -03001/* radio-trust.c - Trust FM Radio card driver for Linux 2.2
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * by Eric Lammerts <eric@scintilla.utwente.nl>
3 *
4 * Based on radio-aztech.c. Original notes:
5 *
Mauro Carvalho Chehab4286c6f2006-04-08 16:06:16 -03006 * Adapted to support the Video for Linux API by
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
8 *
9 * Quay Ly
10 * Donald Song
Mauro Carvalho Chehab4286c6f2006-04-08 16:06:16 -030011 * Jason Lewis (jlewis@twilight.vtc.vsc.edu)
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 * Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
13 * William McGrath (wmcgrath@twilight.vtc.vsc.edu)
14 *
Mauro Carvalho Chehab982eddb2006-08-08 09:10:05 -030015 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 */
17
18#include <stdarg.h>
19#include <linux/module.h>
20#include <linux/init.h>
21#include <linux/ioport.h>
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -030022#include <linux/version.h> /* for KERNEL_VERSION MACRO */
Mauro Carvalho Chehab982eddb2006-08-08 09:10:05 -030023#include <linux/videodev2.h>
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -030024#include <linux/io.h>
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -030025#include <media/v4l2-device.h>
Hans Verkuil35ea11f2008-07-20 08:12:02 -030026#include <media/v4l2-ioctl.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -030028MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
29MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
30MODULE_LICENSE("GPL");
Mauro Carvalho Chehab982eddb2006-08-08 09:10:05 -030031
Linus Torvalds1da177e2005-04-16 15:20:36 -070032/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
33
34#ifndef CONFIG_RADIO_TRUST_PORT
35#define CONFIG_RADIO_TRUST_PORT -1
36#endif
37
Mauro Carvalho Chehab4286c6f2006-04-08 16:06:16 -030038static int io = CONFIG_RADIO_TRUST_PORT;
Linus Torvalds1da177e2005-04-16 15:20:36 -070039static int radio_nr = -1;
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -030040
41module_param(io, int, 0);
42MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
43module_param(radio_nr, int, 0);
44
45#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
46
47struct trust {
48 struct v4l2_device v4l2_dev;
49 struct video_device vdev;
50 int io;
51 int ioval;
52 __u16 curvol;
53 __u16 curbass;
54 __u16 curtreble;
55 int muted;
56 unsigned long curfreq;
57 int curstereo;
58 int curmute;
59 struct mutex lock;
60};
61
62static struct trust trust_card;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
64/* i2c addresses */
65#define TDA7318_ADDR 0x88
66#define TSA6060T_ADDR 0xc4
67
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -030068#define TR_DELAY do { inb(tr->io); inb(tr->io); inb(tr->io); } while (0)
69#define TR_SET_SCL outb(tr->ioval |= 2, tr->io)
70#define TR_CLR_SCL outb(tr->ioval &= 0xfd, tr->io)
71#define TR_SET_SDA outb(tr->ioval |= 1, tr->io)
72#define TR_CLR_SDA outb(tr->ioval &= 0xfe, tr->io)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -030074static void write_i2c(struct trust *tr, int n, ...)
Linus Torvalds1da177e2005-04-16 15:20:36 -070075{
76 unsigned char val, mask;
77 va_list args;
78
79 va_start(args, n);
80
81 /* start condition */
82 TR_SET_SDA;
83 TR_SET_SCL;
84 TR_DELAY;
85 TR_CLR_SDA;
86 TR_CLR_SCL;
87 TR_DELAY;
88
89 for(; n; n--) {
90 val = va_arg(args, unsigned);
91 for(mask = 0x80; mask; mask >>= 1) {
92 if(val & mask)
93 TR_SET_SDA;
94 else
95 TR_CLR_SDA;
96 TR_SET_SCL;
97 TR_DELAY;
98 TR_CLR_SCL;
99 TR_DELAY;
100 }
101 /* acknowledge bit */
102 TR_SET_SDA;
103 TR_SET_SCL;
104 TR_DELAY;
105 TR_CLR_SCL;
106 TR_DELAY;
107 }
108
109 /* stop condition */
110 TR_CLR_SDA;
111 TR_DELAY;
112 TR_SET_SCL;
113 TR_DELAY;
114 TR_SET_SDA;
115 TR_DELAY;
116
117 va_end(args);
118}
119
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300120static void tr_setvol(struct trust *tr, __u16 vol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300122 mutex_lock(&tr->lock);
123 tr->curvol = vol / 2048;
124 write_i2c(tr, 2, TDA7318_ADDR, tr->curvol ^ 0x1f);
125 mutex_unlock(&tr->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126}
127
128static int basstreble2chip[15] = {
129 0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
130};
131
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300132static void tr_setbass(struct trust *tr, __u16 bass)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300134 mutex_lock(&tr->lock);
135 tr->curbass = bass / 4370;
136 write_i2c(tr, 2, TDA7318_ADDR, 0x60 | basstreble2chip[tr->curbass]);
137 mutex_unlock(&tr->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138}
139
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300140static void tr_settreble(struct trust *tr, __u16 treble)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300142 mutex_lock(&tr->lock);
143 tr->curtreble = treble / 4370;
144 write_i2c(tr, 2, TDA7318_ADDR, 0x70 | basstreble2chip[tr->curtreble]);
145 mutex_unlock(&tr->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146}
147
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300148static void tr_setstereo(struct trust *tr, int stereo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300150 mutex_lock(&tr->lock);
151 tr->curstereo = !!stereo;
152 tr->ioval = (tr->ioval & 0xfb) | (!tr->curstereo << 2);
153 outb(tr->ioval, tr->io);
154 mutex_unlock(&tr->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155}
156
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300157static void tr_setmute(struct trust *tr, int mute)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300159 mutex_lock(&tr->lock);
160 tr->curmute = !!mute;
161 tr->ioval = (tr->ioval & 0xf7) | (tr->curmute << 3);
162 outb(tr->ioval, tr->io);
163 mutex_unlock(&tr->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164}
165
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300166static int tr_getsigstr(struct trust *tr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167{
168 int i, v;
Mauro Carvalho Chehab4286c6f2006-04-08 16:06:16 -0300169
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300170 mutex_lock(&tr->lock);
171 for (i = 0, v = 0; i < 100; i++)
172 v |= inb(tr->io);
173 mutex_unlock(&tr->lock);
174 return (v & 1) ? 0 : 0xffff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175}
176
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300177static int tr_getstereo(struct trust *tr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178{
179 /* don't know how to determine it, just return the setting */
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300180 return tr->curstereo;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181}
182
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300183static void tr_setfreq(struct trust *tr, unsigned long f)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300185 mutex_lock(&tr->lock);
186 tr->curfreq = f;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 f /= 160; /* Convert to 10 kHz units */
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300188 f += 1070; /* Add 10.7 MHz IF */
189 write_i2c(tr, 5, TSA6060T_ADDR, (f << 1) | 1, f >> 7, 0x60 | ((f >> 15) & 1), 0);
190 mutex_unlock(&tr->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191}
192
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300193static int vidioc_querycap(struct file *file, void *priv,
194 struct v4l2_capability *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195{
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300196 strlcpy(v->driver, "radio-trust", sizeof(v->driver));
197 strlcpy(v->card, "Trust FM Radio", sizeof(v->card));
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300198 strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300199 v->version = RADIO_VERSION;
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300200 v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300201 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202}
203
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300204static int vidioc_g_tuner(struct file *file, void *priv,
205 struct v4l2_tuner *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300207 struct trust *tr = video_drvdata(file);
208
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300209 if (v->index > 0)
210 return -EINVAL;
211
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300212 strlcpy(v->name, "FM", sizeof(v->name));
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300213 v->type = V4L2_TUNER_RADIO;
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300214 v->rangelow = 87.5 * 16000;
215 v->rangehigh = 108 * 16000;
216 v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300217 v->capability = V4L2_TUNER_CAP_LOW;
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300218 if (tr_getstereo(tr))
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300219 v->audmode = V4L2_TUNER_MODE_STEREO;
220 else
221 v->audmode = V4L2_TUNER_MODE_MONO;
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300222 v->signal = tr_getsigstr(tr);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300223 return 0;
224}
225
226static int vidioc_s_tuner(struct file *file, void *priv,
227 struct v4l2_tuner *v)
228{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300229 struct trust *tr = video_drvdata(file);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300230
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300231 if (v->index)
232 return -EINVAL;
233 tr_setstereo(tr, v->audmode == V4L2_TUNER_MODE_STEREO);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300234 return 0;
235}
236
237static int vidioc_s_frequency(struct file *file, void *priv,
238 struct v4l2_frequency *f)
239{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300240 struct trust *tr = video_drvdata(file);
241
242 tr_setfreq(tr, f->frequency);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300243 return 0;
244}
245
246static int vidioc_g_frequency(struct file *file, void *priv,
247 struct v4l2_frequency *f)
248{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300249 struct trust *tr = video_drvdata(file);
250
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300251 f->type = V4L2_TUNER_RADIO;
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300252 f->frequency = tr->curfreq;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300253 return 0;
254}
255
256static int vidioc_queryctrl(struct file *file, void *priv,
257 struct v4l2_queryctrl *qc)
258{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300259 switch (qc->id) {
260 case V4L2_CID_AUDIO_MUTE:
261 return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
262 case V4L2_CID_AUDIO_VOLUME:
263 return v4l2_ctrl_query_fill(qc, 0, 65535, 2048, 65535);
264 case V4L2_CID_AUDIO_BASS:
265 case V4L2_CID_AUDIO_TREBLE:
266 return v4l2_ctrl_query_fill(qc, 0, 65535, 4370, 32768);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300267 }
268 return -EINVAL;
269}
270
271static int vidioc_g_ctrl(struct file *file, void *priv,
272 struct v4l2_control *ctrl)
273{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300274 struct trust *tr = video_drvdata(file);
275
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300276 switch (ctrl->id) {
277 case V4L2_CID_AUDIO_MUTE:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300278 ctrl->value = tr->curmute;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300279 return 0;
280 case V4L2_CID_AUDIO_VOLUME:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300281 ctrl->value = tr->curvol * 2048;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300282 return 0;
283 case V4L2_CID_AUDIO_BASS:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300284 ctrl->value = tr->curbass * 4370;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300285 return 0;
286 case V4L2_CID_AUDIO_TREBLE:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300287 ctrl->value = tr->curtreble * 4370;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300288 return 0;
289 }
290 return -EINVAL;
291}
292
293static int vidioc_s_ctrl(struct file *file, void *priv,
294 struct v4l2_control *ctrl)
295{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300296 struct trust *tr = video_drvdata(file);
297
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300298 switch (ctrl->id) {
299 case V4L2_CID_AUDIO_MUTE:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300300 tr_setmute(tr, ctrl->value);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300301 return 0;
302 case V4L2_CID_AUDIO_VOLUME:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300303 tr_setvol(tr, ctrl->value);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300304 return 0;
305 case V4L2_CID_AUDIO_BASS:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300306 tr_setbass(tr, ctrl->value);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300307 return 0;
308 case V4L2_CID_AUDIO_TREBLE:
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300309 tr_settreble(tr, ctrl->value);
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300310 return 0;
311 }
312 return -EINVAL;
313}
314
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300315static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
316{
317 *i = 0;
318 return 0;
319}
320
321static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
322{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300323 return i ? -EINVAL : 0;
324}
325
326static int vidioc_g_audio(struct file *file, void *priv,
327 struct v4l2_audio *a)
328{
329 a->index = 0;
330 strlcpy(a->name, "Radio", sizeof(a->name));
331 a->capability = V4L2_AUDCAP_STEREO;
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300332 return 0;
333}
334
335static int vidioc_s_audio(struct file *file, void *priv,
336 struct v4l2_audio *a)
337{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300338 return a->index ? -EINVAL : 0;
339}
340
Hans Verkuilbec43662008-12-30 06:58:20 -0300341static const struct v4l2_file_operations trust_fops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 .owner = THIS_MODULE,
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300343 .ioctl = video_ioctl2,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344};
345
Hans Verkuila3998102008-07-21 02:57:38 -0300346static const struct v4l2_ioctl_ops trust_ioctl_ops = {
Douglas Landgrafc5f822b2007-04-20 18:22:19 -0300347 .vidioc_querycap = vidioc_querycap,
348 .vidioc_g_tuner = vidioc_g_tuner,
349 .vidioc_s_tuner = vidioc_s_tuner,
350 .vidioc_g_frequency = vidioc_g_frequency,
351 .vidioc_s_frequency = vidioc_s_frequency,
352 .vidioc_queryctrl = vidioc_queryctrl,
353 .vidioc_g_ctrl = vidioc_g_ctrl,
354 .vidioc_s_ctrl = vidioc_s_ctrl,
355 .vidioc_g_audio = vidioc_g_audio,
356 .vidioc_s_audio = vidioc_s_audio,
357 .vidioc_g_input = vidioc_g_input,
358 .vidioc_s_input = vidioc_s_input,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359};
360
361static int __init trust_init(void)
362{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300363 struct trust *tr = &trust_card;
364 struct v4l2_device *v4l2_dev = &tr->v4l2_dev;
365 int res;
366
367 strlcpy(v4l2_dev->name, "trust", sizeof(v4l2_dev->name));
368 tr->io = io;
369 tr->ioval = 0xf;
370 mutex_init(&tr->lock);
371
372 if (tr->io == -1) {
Hans Verkuilb24c20cc2009-03-09 08:11:21 -0300373 v4l2_err(v4l2_dev, "You must set an I/O address with io=0x0x350 or 0x358\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 return -EINVAL;
375 }
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300376 if (!request_region(tr->io, 2, "Trust FM Radio")) {
377 v4l2_err(v4l2_dev, "port 0x%x already in use\n", tr->io);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 return -EBUSY;
379 }
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300380
381 res = v4l2_device_register(NULL, v4l2_dev);
382 if (res < 0) {
383 release_region(tr->io, 2);
384 v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
385 return res;
386 }
387
388 strlcpy(tr->vdev.name, v4l2_dev->name, sizeof(tr->vdev.name));
389 tr->vdev.v4l2_dev = v4l2_dev;
390 tr->vdev.fops = &trust_fops;
391 tr->vdev.ioctl_ops = &trust_ioctl_ops;
392 tr->vdev.release = video_device_release_empty;
393 video_set_drvdata(&tr->vdev, tr);
394
395 if (video_register_device(&tr->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
396 v4l2_device_unregister(v4l2_dev);
397 release_region(tr->io, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 return -EINVAL;
399 }
400
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300401 v4l2_info(v4l2_dev, "Trust FM Radio card driver v1.0.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300403 write_i2c(tr, 2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */
404 write_i2c(tr, 2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */
405 write_i2c(tr, 2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */
406 write_i2c(tr, 2, TDA7318_ADDR, 0xe0); /* speaker att. RR = 0 dB */
407 write_i2c(tr, 2, TDA7318_ADDR, 0x40); /* stereo 1 input, gain = 18.75 dB */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300409 tr_setvol(tr, 0xffff);
410 tr_setbass(tr, 0x8000);
411 tr_settreble(tr, 0x8000);
412 tr_setstereo(tr, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413
414 /* mute card - prevents noisy bootups */
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300415 tr_setmute(tr, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
417 return 0;
418}
419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420static void __exit cleanup_trust_module(void)
421{
Hans Verkuil1dc8aaf2009-03-06 13:54:23 -0300422 struct trust *tr = &trust_card;
423
424 video_unregister_device(&tr->vdev);
425 v4l2_device_unregister(&tr->v4l2_dev);
426 release_region(tr->io, 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427}
428
429module_init(trust_init);
430module_exit(cleanup_trust_module);