Commit | Line | Data |
---|---|---|
4286c6f6 | 1 | /* radio-trust.c - Trust FM Radio card driver for Linux 2.2 |
1da177e4 LT |
2 | * by Eric Lammerts <eric@scintilla.utwente.nl> |
3 | * | |
4 | * Based on radio-aztech.c. Original notes: | |
5 | * | |
4286c6f6 | 6 | * Adapted to support the Video for Linux API by |
1da177e4 LT |
7 | * Russell Kroll <rkroll@exploits.org>. Based on original tuner code by: |
8 | * | |
9 | * Quay Ly | |
10 | * Donald Song | |
4286c6f6 | 11 | * Jason Lewis (jlewis@twilight.vtc.vsc.edu) |
1da177e4 LT |
12 | * Scott McGrath (smcgrath@twilight.vtc.vsc.edu) |
13 | * William McGrath (wmcgrath@twilight.vtc.vsc.edu) | |
14 | * | |
982eddb9 | 15 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
1da177e4 LT |
16 | */ |
17 | ||
18 | #include <stdarg.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/ioport.h> | |
1dc8aafc | 22 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
982eddb9 | 23 | #include <linux/videodev2.h> |
1dc8aafc | 24 | #include <linux/io.h> |
1dc8aafc | 25 | #include <media/v4l2-device.h> |
35ea11ff | 26 | #include <media/v4l2-ioctl.h> |
1da177e4 | 27 | |
1dc8aafc HV |
28 | MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath"); |
29 | MODULE_DESCRIPTION("A driver for the Trust FM Radio card."); | |
30 | MODULE_LICENSE("GPL"); | |
982eddb9 | 31 | |
1da177e4 LT |
32 | /* 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 | ||
4286c6f6 | 38 | static int io = CONFIG_RADIO_TRUST_PORT; |
1da177e4 | 39 | static int radio_nr = -1; |
1dc8aafc HV |
40 | |
41 | module_param(io, int, 0); | |
42 | MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)"); | |
43 | module_param(radio_nr, int, 0); | |
44 | ||
45 | #define RADIO_VERSION KERNEL_VERSION(0, 0, 2) | |
46 | ||
47 | struct 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 | ||
62 | static struct trust trust_card; | |
1da177e4 LT |
63 | |
64 | /* i2c addresses */ | |
65 | #define TDA7318_ADDR 0x88 | |
66 | #define TSA6060T_ADDR 0xc4 | |
67 | ||
1dc8aafc HV |
68 | #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) | |
1da177e4 | 73 | |
1dc8aafc | 74 | static void write_i2c(struct trust *tr, int n, ...) |
1da177e4 LT |
75 | { |
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 | ||
1dc8aafc | 120 | static void tr_setvol(struct trust *tr, __u16 vol) |
1da177e4 | 121 | { |
1dc8aafc HV |
122 | mutex_lock(&tr->lock); |
123 | tr->curvol = vol / 2048; | |
124 | write_i2c(tr, 2, TDA7318_ADDR, tr->curvol ^ 0x1f); | |
125 | mutex_unlock(&tr->lock); | |
1da177e4 LT |
126 | } |
127 | ||
128 | static int basstreble2chip[15] = { | |
129 | 0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8 | |
130 | }; | |
131 | ||
1dc8aafc | 132 | static void tr_setbass(struct trust *tr, __u16 bass) |
1da177e4 | 133 | { |
1dc8aafc HV |
134 | 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); | |
1da177e4 LT |
138 | } |
139 | ||
1dc8aafc | 140 | static void tr_settreble(struct trust *tr, __u16 treble) |
1da177e4 | 141 | { |
1dc8aafc HV |
142 | 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); | |
1da177e4 LT |
146 | } |
147 | ||
1dc8aafc | 148 | static void tr_setstereo(struct trust *tr, int stereo) |
1da177e4 | 149 | { |
1dc8aafc HV |
150 | 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); | |
1da177e4 LT |
155 | } |
156 | ||
1dc8aafc | 157 | static void tr_setmute(struct trust *tr, int mute) |
1da177e4 | 158 | { |
1dc8aafc HV |
159 | 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); | |
1da177e4 LT |
164 | } |
165 | ||
1dc8aafc | 166 | static int tr_getsigstr(struct trust *tr) |
1da177e4 LT |
167 | { |
168 | int i, v; | |
4286c6f6 | 169 | |
1dc8aafc HV |
170 | 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; | |
1da177e4 LT |
175 | } |
176 | ||
1dc8aafc | 177 | static int tr_getstereo(struct trust *tr) |
1da177e4 LT |
178 | { |
179 | /* don't know how to determine it, just return the setting */ | |
1dc8aafc | 180 | return tr->curstereo; |
1da177e4 LT |
181 | } |
182 | ||
1dc8aafc | 183 | static void tr_setfreq(struct trust *tr, unsigned long f) |
1da177e4 | 184 | { |
1dc8aafc HV |
185 | mutex_lock(&tr->lock); |
186 | tr->curfreq = f; | |
1da177e4 | 187 | f /= 160; /* Convert to 10 kHz units */ |
1dc8aafc HV |
188 | 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); | |
1da177e4 LT |
191 | } |
192 | ||
c5f822bf DL |
193 | static int vidioc_querycap(struct file *file, void *priv, |
194 | struct v4l2_capability *v) | |
1da177e4 | 195 | { |
c5f822bf DL |
196 | strlcpy(v->driver, "radio-trust", sizeof(v->driver)); |
197 | strlcpy(v->card, "Trust FM Radio", sizeof(v->card)); | |
1dc8aafc | 198 | strlcpy(v->bus_info, "ISA", sizeof(v->bus_info)); |
c5f822bf | 199 | v->version = RADIO_VERSION; |
1dc8aafc | 200 | v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
c5f822bf DL |
201 | return 0; |
202 | } | |
1da177e4 | 203 | |
c5f822bf DL |
204 | static int vidioc_g_tuner(struct file *file, void *priv, |
205 | struct v4l2_tuner *v) | |
206 | { | |
1dc8aafc HV |
207 | struct trust *tr = video_drvdata(file); |
208 | ||
c5f822bf DL |
209 | if (v->index > 0) |
210 | return -EINVAL; | |
1da177e4 | 211 | |
1dc8aafc | 212 | strlcpy(v->name, "FM", sizeof(v->name)); |
c5f822bf | 213 | v->type = V4L2_TUNER_RADIO; |
1dc8aafc HV |
214 | v->rangelow = 87.5 * 16000; |
215 | v->rangehigh = 108 * 16000; | |
216 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
c5f822bf | 217 | v->capability = V4L2_TUNER_CAP_LOW; |
1dc8aafc | 218 | if (tr_getstereo(tr)) |
c5f822bf DL |
219 | v->audmode = V4L2_TUNER_MODE_STEREO; |
220 | else | |
221 | v->audmode = V4L2_TUNER_MODE_MONO; | |
1dc8aafc | 222 | v->signal = tr_getsigstr(tr); |
c5f822bf DL |
223 | return 0; |
224 | } | |
982eddb9 | 225 | |
c5f822bf DL |
226 | static int vidioc_s_tuner(struct file *file, void *priv, |
227 | struct v4l2_tuner *v) | |
228 | { | |
1dc8aafc | 229 | struct trust *tr = video_drvdata(file); |
982eddb9 | 230 | |
1dc8aafc HV |
231 | if (v->index) |
232 | return -EINVAL; | |
233 | tr_setstereo(tr, v->audmode == V4L2_TUNER_MODE_STEREO); | |
c5f822bf DL |
234 | return 0; |
235 | } | |
982eddb9 | 236 | |
c5f822bf DL |
237 | static int vidioc_s_frequency(struct file *file, void *priv, |
238 | struct v4l2_frequency *f) | |
239 | { | |
1dc8aafc HV |
240 | struct trust *tr = video_drvdata(file); |
241 | ||
242 | tr_setfreq(tr, f->frequency); | |
c5f822bf DL |
243 | return 0; |
244 | } | |
982eddb9 | 245 | |
c5f822bf DL |
246 | static int vidioc_g_frequency(struct file *file, void *priv, |
247 | struct v4l2_frequency *f) | |
248 | { | |
1dc8aafc HV |
249 | struct trust *tr = video_drvdata(file); |
250 | ||
c5f822bf | 251 | f->type = V4L2_TUNER_RADIO; |
1dc8aafc | 252 | f->frequency = tr->curfreq; |
c5f822bf DL |
253 | return 0; |
254 | } | |
255 | ||
256 | static int vidioc_queryctrl(struct file *file, void *priv, | |
257 | struct v4l2_queryctrl *qc) | |
258 | { | |
1dc8aafc HV |
259 | 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); | |
c5f822bf DL |
267 | } |
268 | return -EINVAL; | |
269 | } | |
270 | ||
271 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
272 | struct v4l2_control *ctrl) | |
273 | { | |
1dc8aafc HV |
274 | struct trust *tr = video_drvdata(file); |
275 | ||
c5f822bf DL |
276 | switch (ctrl->id) { |
277 | case V4L2_CID_AUDIO_MUTE: | |
1dc8aafc | 278 | ctrl->value = tr->curmute; |
c5f822bf DL |
279 | return 0; |
280 | case V4L2_CID_AUDIO_VOLUME: | |
1dc8aafc | 281 | ctrl->value = tr->curvol * 2048; |
c5f822bf DL |
282 | return 0; |
283 | case V4L2_CID_AUDIO_BASS: | |
1dc8aafc | 284 | ctrl->value = tr->curbass * 4370; |
c5f822bf DL |
285 | return 0; |
286 | case V4L2_CID_AUDIO_TREBLE: | |
1dc8aafc | 287 | ctrl->value = tr->curtreble * 4370; |
c5f822bf DL |
288 | return 0; |
289 | } | |
290 | return -EINVAL; | |
291 | } | |
982eddb9 | 292 | |
c5f822bf DL |
293 | static int vidioc_s_ctrl(struct file *file, void *priv, |
294 | struct v4l2_control *ctrl) | |
295 | { | |
1dc8aafc HV |
296 | struct trust *tr = video_drvdata(file); |
297 | ||
c5f822bf DL |
298 | switch (ctrl->id) { |
299 | case V4L2_CID_AUDIO_MUTE: | |
1dc8aafc | 300 | tr_setmute(tr, ctrl->value); |
c5f822bf DL |
301 | return 0; |
302 | case V4L2_CID_AUDIO_VOLUME: | |
1dc8aafc | 303 | tr_setvol(tr, ctrl->value); |
c5f822bf DL |
304 | return 0; |
305 | case V4L2_CID_AUDIO_BASS: | |
1dc8aafc | 306 | tr_setbass(tr, ctrl->value); |
c5f822bf DL |
307 | return 0; |
308 | case V4L2_CID_AUDIO_TREBLE: | |
1dc8aafc | 309 | tr_settreble(tr, ctrl->value); |
c5f822bf | 310 | return 0; |
1da177e4 | 311 | } |
c5f822bf | 312 | return -EINVAL; |
1da177e4 LT |
313 | } |
314 | ||
c5f822bf DL |
315 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
316 | { | |
317 | *i = 0; | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) | |
322 | { | |
1dc8aafc HV |
323 | return i ? -EINVAL : 0; |
324 | } | |
325 | ||
326 | static 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; | |
c5f822bf DL |
332 | return 0; |
333 | } | |
334 | ||
335 | static int vidioc_s_audio(struct file *file, void *priv, | |
336 | struct v4l2_audio *a) | |
337 | { | |
1dc8aafc | 338 | return a->index ? -EINVAL : 0; |
1da177e4 LT |
339 | } |
340 | ||
bec43661 | 341 | static const struct v4l2_file_operations trust_fops = { |
1da177e4 | 342 | .owner = THIS_MODULE, |
c5f822bf | 343 | .ioctl = video_ioctl2, |
1da177e4 LT |
344 | }; |
345 | ||
a399810c | 346 | static const struct v4l2_ioctl_ops trust_ioctl_ops = { |
c5f822bf DL |
347 | .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, | |
1da177e4 LT |
359 | }; |
360 | ||
361 | static int __init trust_init(void) | |
362 | { | |
1dc8aafc HV |
363 | 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) { | |
b24c20cc | 373 | v4l2_err(v4l2_dev, "You must set an I/O address with io=0x0x350 or 0x358\n"); |
1da177e4 LT |
374 | return -EINVAL; |
375 | } | |
1dc8aafc HV |
376 | if (!request_region(tr->io, 2, "Trust FM Radio")) { |
377 | v4l2_err(v4l2_dev, "port 0x%x already in use\n", tr->io); | |
1da177e4 LT |
378 | return -EBUSY; |
379 | } | |
1dc8aafc HV |
380 | |
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); | |
1da177e4 LT |
398 | return -EINVAL; |
399 | } | |
400 | ||
1dc8aafc | 401 | v4l2_info(v4l2_dev, "Trust FM Radio card driver v1.0.\n"); |
1da177e4 | 402 | |
1dc8aafc HV |
403 | 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 */ | |
1da177e4 | 408 | |
1dc8aafc HV |
409 | tr_setvol(tr, 0xffff); |
410 | tr_setbass(tr, 0x8000); | |
411 | tr_settreble(tr, 0x8000); | |
412 | tr_setstereo(tr, 1); | |
1da177e4 LT |
413 | |
414 | /* mute card - prevents noisy bootups */ | |
1dc8aafc | 415 | tr_setmute(tr, 1); |
1da177e4 LT |
416 | |
417 | return 0; | |
418 | } | |
419 | ||
1da177e4 LT |
420 | static void __exit cleanup_trust_module(void) |
421 | { | |
1dc8aafc HV |
422 | 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); | |
1da177e4 LT |
427 | } |
428 | ||
429 | module_init(trust_init); | |
430 | module_exit(cleanup_trust_module); |