Commit | Line | Data |
---|---|---|
c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips | |
4 | * | |
c1017a4c | 5 | * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> |
4b29631d | 6 | */ |
1da177e4 | 7 | |
1da177e4 | 8 | #include <linux/delay.h> |
da155d5b | 9 | #include <linux/module.h> |
1da177e4 | 10 | #include <linux/init.h> |
5a0e3ad6 | 11 | #include <linux/slab.h> |
d4ecc83b | 12 | #include <linux/sched.h> |
eab924d0 | 13 | #include <asm/io.h> |
d4ecc83b | 14 | #include <media/v4l2-device.h> |
4522e825 | 15 | #include <media/v4l2-dev.h> |
d4ecc83b | 16 | #include <media/v4l2-fh.h> |
4522e825 | 17 | #include <media/v4l2-ioctl.h> |
d4ecc83b | 18 | #include <media/v4l2-event.h> |
d647f0b7 | 19 | #include <media/drv-intf/tea575x.h> |
1da177e4 | 20 | |
c1017a4c | 21 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
22 | MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips"); |
23 | MODULE_LICENSE("GPL"); | |
24 | ||
25 | /* | |
26 | * definitions | |
27 | */ | |
28 | ||
29 | #define TEA575X_BIT_SEARCH (1<<24) /* 1 = search action, 0 = tuned */ | |
30 | #define TEA575X_BIT_UPDOWN (1<<23) /* 0 = search down, 1 = search up */ | |
31 | #define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */ | |
32 | #define TEA575X_BIT_BAND_MASK (3<<20) | |
33 | #define TEA575X_BIT_BAND_FM (0<<20) | |
34 | #define TEA575X_BIT_BAND_MW (1<<20) | |
fc488517 HG |
35 | #define TEA575X_BIT_BAND_LW (2<<20) |
36 | #define TEA575X_BIT_BAND_SW (3<<20) | |
1da177e4 LT |
37 | #define TEA575X_BIT_PORT_0 (1<<19) /* user bit */ |
38 | #define TEA575X_BIT_PORT_1 (1<<18) /* user bit */ | |
39 | #define TEA575X_BIT_SEARCH_MASK (3<<16) /* search level */ | |
40 | #define TEA575X_BIT_SEARCH_5_28 (0<<16) /* FM >5uV, AM >28uV */ | |
41 | #define TEA575X_BIT_SEARCH_10_40 (1<<16) /* FM >10uV, AM > 40uV */ | |
42 | #define TEA575X_BIT_SEARCH_30_63 (2<<16) /* FM >30uV, AM > 63uV */ | |
43 | #define TEA575X_BIT_SEARCH_150_1000 (3<<16) /* FM > 150uV, AM > 1000uV */ | |
44 | #define TEA575X_BIT_DUMMY (1<<15) /* buffer */ | |
45 | #define TEA575X_BIT_FREQ_MASK 0x7fff | |
46 | ||
fc488517 HG |
47 | enum { BAND_FM, BAND_FM_JAPAN, BAND_AM }; |
48 | ||
49 | static const struct v4l2_frequency_band bands[] = { | |
50 | { | |
51 | .type = V4L2_TUNER_RADIO, | |
52 | .index = 0, | |
53 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | | |
54 | V4L2_TUNER_CAP_FREQ_BANDS, | |
55 | .rangelow = 87500 * 16, | |
56 | .rangehigh = 108000 * 16, | |
57 | .modulation = V4L2_BAND_MODULATION_FM, | |
58 | }, | |
59 | { | |
60 | .type = V4L2_TUNER_RADIO, | |
61 | .index = 0, | |
62 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | | |
63 | V4L2_TUNER_CAP_FREQ_BANDS, | |
64 | .rangelow = 76000 * 16, | |
65 | .rangehigh = 91000 * 16, | |
66 | .modulation = V4L2_BAND_MODULATION_FM, | |
67 | }, | |
68 | { | |
69 | .type = V4L2_TUNER_RADIO, | |
70 | .index = 1, | |
71 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS, | |
72 | .rangelow = 530 * 16, | |
73 | .rangehigh = 1710 * 16, | |
74 | .modulation = V4L2_BAND_MODULATION_AM, | |
75 | }, | |
76 | }; | |
77 | ||
1da177e4 LT |
78 | /* |
79 | * lowlevel part | |
80 | */ | |
81 | ||
14219d06 OZ |
82 | static void snd_tea575x_write(struct snd_tea575x *tea, unsigned int val) |
83 | { | |
84 | u16 l; | |
85 | u8 data; | |
86 | ||
31a62d41 HG |
87 | if (tea->ops->write_val) |
88 | return tea->ops->write_val(tea, val); | |
89 | ||
14219d06 OZ |
90 | tea->ops->set_direction(tea, 1); |
91 | udelay(16); | |
92 | ||
93 | for (l = 25; l > 0; l--) { | |
94 | data = (val >> 24) & TEA575X_DATA; | |
95 | val <<= 1; /* shift data */ | |
96 | tea->ops->set_pins(tea, data | TEA575X_WREN); | |
97 | udelay(2); | |
98 | tea->ops->set_pins(tea, data | TEA575X_WREN | TEA575X_CLK); | |
99 | udelay(2); | |
100 | tea->ops->set_pins(tea, data | TEA575X_WREN); | |
101 | udelay(2); | |
102 | } | |
103 | ||
104 | if (!tea->mute) | |
105 | tea->ops->set_pins(tea, 0); | |
106 | } | |
107 | ||
bc2b395c | 108 | static u32 snd_tea575x_read(struct snd_tea575x *tea) |
14219d06 OZ |
109 | { |
110 | u16 l, rdata; | |
111 | u32 data = 0; | |
112 | ||
31a62d41 HG |
113 | if (tea->ops->read_val) |
114 | return tea->ops->read_val(tea); | |
115 | ||
14219d06 OZ |
116 | tea->ops->set_direction(tea, 0); |
117 | tea->ops->set_pins(tea, 0); | |
118 | udelay(16); | |
119 | ||
120 | for (l = 24; l--;) { | |
121 | tea->ops->set_pins(tea, TEA575X_CLK); | |
122 | udelay(2); | |
123 | if (!l) | |
124 | tea->tuned = tea->ops->get_pins(tea) & TEA575X_MOST ? 0 : 1; | |
125 | tea->ops->set_pins(tea, 0); | |
126 | udelay(2); | |
127 | data <<= 1; /* shift data */ | |
128 | rdata = tea->ops->get_pins(tea); | |
129 | if (!l) | |
130 | tea->stereo = (rdata & TEA575X_MOST) ? 0 : 1; | |
131 | if (rdata & TEA575X_DATA) | |
132 | data++; | |
133 | udelay(2); | |
134 | } | |
135 | ||
136 | if (tea->mute) | |
137 | tea->ops->set_pins(tea, TEA575X_WREN); | |
138 | ||
139 | return data; | |
140 | } | |
141 | ||
40e006ae | 142 | static u32 snd_tea575x_val_to_freq(struct snd_tea575x *tea, u32 val) |
bc2b395c | 143 | { |
40e006ae | 144 | u32 freq = val & TEA575X_BIT_FREQ_MASK; |
bc2b395c HV |
145 | |
146 | if (freq == 0) | |
147 | return freq; | |
148 | ||
fc488517 HG |
149 | switch (tea->band) { |
150 | case BAND_FM: | |
151 | /* freq *= 12.5 */ | |
152 | freq *= 125; | |
153 | freq /= 10; | |
154 | /* crystal fixup */ | |
bc2b395c | 155 | freq -= TEA575X_FMIF; |
fc488517 HG |
156 | break; |
157 | case BAND_FM_JAPAN: | |
158 | /* freq *= 12.5 */ | |
159 | freq *= 125; | |
160 | freq /= 10; | |
161 | /* crystal fixup */ | |
162 | freq += TEA575X_FMIF; | |
163 | break; | |
164 | case BAND_AM: | |
165 | /* crystal fixup */ | |
166 | freq -= TEA575X_AMIF; | |
167 | break; | |
168 | } | |
bc2b395c | 169 | |
fc488517 HG |
170 | return clamp(freq * 16, bands[tea->band].rangelow, |
171 | bands[tea->band].rangehigh); /* from kHz */ | |
bc2b395c HV |
172 | } |
173 | ||
40e006ae HG |
174 | static u32 snd_tea575x_get_freq(struct snd_tea575x *tea) |
175 | { | |
176 | return snd_tea575x_val_to_freq(tea, snd_tea575x_read(tea)); | |
177 | } | |
178 | ||
559c2009 | 179 | void snd_tea575x_set_freq(struct snd_tea575x *tea) |
1da177e4 | 180 | { |
fc488517 HG |
181 | u32 freq = tea->freq / 16; /* to kHz */ |
182 | u32 band = 0; | |
1da177e4 | 183 | |
fc488517 HG |
184 | switch (tea->band) { |
185 | case BAND_FM: | |
186 | band = TEA575X_BIT_BAND_FM; | |
187 | /* crystal fixup */ | |
ea27316e | 188 | freq += TEA575X_FMIF; |
fc488517 HG |
189 | /* freq /= 12.5 */ |
190 | freq *= 10; | |
191 | freq /= 125; | |
192 | break; | |
193 | case BAND_FM_JAPAN: | |
194 | band = TEA575X_BIT_BAND_FM; | |
195 | /* crystal fixup */ | |
196 | freq -= TEA575X_FMIF; | |
197 | /* freq /= 12.5 */ | |
198 | freq *= 10; | |
199 | freq /= 125; | |
200 | break; | |
201 | case BAND_AM: | |
202 | band = TEA575X_BIT_BAND_MW; | |
203 | /* crystal fixup */ | |
204 | freq += TEA575X_AMIF; | |
205 | break; | |
206 | } | |
1da177e4 | 207 | |
fc488517 HG |
208 | tea->val &= ~(TEA575X_BIT_FREQ_MASK | TEA575X_BIT_BAND_MASK); |
209 | tea->val |= band; | |
1da177e4 | 210 | tea->val |= freq & TEA575X_BIT_FREQ_MASK; |
14219d06 | 211 | snd_tea575x_write(tea, tea->val); |
40e006ae | 212 | tea->freq = snd_tea575x_val_to_freq(tea, tea->val); |
1da177e4 | 213 | } |
0e2a706b | 214 | EXPORT_SYMBOL(snd_tea575x_set_freq); |
1da177e4 LT |
215 | |
216 | /* | |
217 | * Linux Video interface | |
218 | */ | |
219 | ||
9b76ede4 MCC |
220 | static int vidioc_querycap(struct file *file, void *priv, |
221 | struct v4l2_capability *v) | |
1da177e4 | 222 | { |
c170ecf4 | 223 | struct snd_tea575x *tea = video_drvdata(file); |
9b76ede4 | 224 | |
c0decac1 MCC |
225 | strscpy(v->driver, tea->v4l2_dev->name, sizeof(v->driver)); |
226 | strscpy(v->card, tea->card, sizeof(v->card)); | |
10ca7201 | 227 | strlcat(v->card, tea->tea5759 ? " TEA5759" : " TEA5757", sizeof(v->card)); |
c0decac1 | 228 | strscpy(v->bus_info, tea->bus_info, sizeof(v->bus_info)); |
9b76ede4 MCC |
229 | return 0; |
230 | } | |
231 | ||
6994ca3d OZ |
232 | int snd_tea575x_enum_freq_bands(struct snd_tea575x *tea, |
233 | struct v4l2_frequency_band *band) | |
fc488517 | 234 | { |
fc488517 HG |
235 | int index; |
236 | ||
237 | if (band->tuner != 0) | |
238 | return -EINVAL; | |
239 | ||
240 | switch (band->index) { | |
241 | case 0: | |
242 | if (tea->tea5759) | |
243 | index = BAND_FM_JAPAN; | |
244 | else | |
245 | index = BAND_FM; | |
246 | break; | |
247 | case 1: | |
248 | if (tea->has_am) { | |
249 | index = BAND_AM; | |
250 | break; | |
251 | } | |
df561f66 | 252 | fallthrough; |
fc488517 HG |
253 | default: |
254 | return -EINVAL; | |
255 | } | |
256 | ||
257 | *band = bands[index]; | |
258 | if (!tea->cannot_read_data) | |
259 | band->capability |= V4L2_TUNER_CAP_HWSEEK_BOUNDED; | |
260 | ||
261 | return 0; | |
262 | } | |
6994ca3d | 263 | EXPORT_SYMBOL(snd_tea575x_enum_freq_bands); |
fc488517 | 264 | |
6994ca3d OZ |
265 | static int vidioc_enum_freq_bands(struct file *file, void *priv, |
266 | struct v4l2_frequency_band *band) | |
9b76ede4 | 267 | { |
375d1358 | 268 | struct snd_tea575x *tea = video_drvdata(file); |
6994ca3d OZ |
269 | |
270 | return snd_tea575x_enum_freq_bands(tea, band); | |
271 | } | |
272 | ||
273 | int snd_tea575x_g_tuner(struct snd_tea575x *tea, struct v4l2_tuner *v) | |
274 | { | |
fc488517 | 275 | struct v4l2_frequency_band band_fm = { 0, }; |
375d1358 | 276 | |
9b76ede4 MCC |
277 | if (v->index > 0) |
278 | return -EINVAL; | |
279 | ||
14219d06 | 280 | snd_tea575x_read(tea); |
6994ca3d | 281 | snd_tea575x_enum_freq_bands(tea, &band_fm); |
375d1358 | 282 | |
fc488517 | 283 | memset(v, 0, sizeof(*v)); |
c0decac1 | 284 | strscpy(v->name, tea->has_am ? "FM/AM" : "FM", sizeof(v->name)); |
9b76ede4 | 285 | v->type = V4L2_TUNER_RADIO; |
fc488517 HG |
286 | v->capability = band_fm.capability; |
287 | v->rangelow = tea->has_am ? bands[BAND_AM].rangelow : band_fm.rangelow; | |
288 | v->rangehigh = band_fm.rangehigh; | |
d4ecc83b HV |
289 | v->rxsubchans = tea->stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; |
290 | v->audmode = (tea->val & TEA575X_BIT_MONO) ? | |
291 | V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO; | |
375d1358 | 292 | v->signal = tea->tuned ? 0xffff : 0; |
9b76ede4 MCC |
293 | return 0; |
294 | } | |
6994ca3d OZ |
295 | EXPORT_SYMBOL(snd_tea575x_g_tuner); |
296 | ||
297 | static int vidioc_g_tuner(struct file *file, void *priv, | |
298 | struct v4l2_tuner *v) | |
299 | { | |
300 | struct snd_tea575x *tea = video_drvdata(file); | |
301 | ||
302 | return snd_tea575x_g_tuner(tea, v); | |
303 | } | |
9b76ede4 MCC |
304 | |
305 | static int vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 306 | const struct v4l2_tuner *v) |
9b76ede4 | 307 | { |
d4ecc83b | 308 | struct snd_tea575x *tea = video_drvdata(file); |
fc488517 | 309 | u32 orig_val = tea->val; |
d4ecc83b HV |
310 | |
311 | if (v->index) | |
9b76ede4 | 312 | return -EINVAL; |
d4ecc83b HV |
313 | tea->val &= ~TEA575X_BIT_MONO; |
314 | if (v->audmode == V4L2_TUNER_MODE_MONO) | |
315 | tea->val |= TEA575X_BIT_MONO; | |
fc488517 HG |
316 | /* Only apply changes if currently tuning FM */ |
317 | if (tea->band != BAND_AM && tea->val != orig_val) | |
318 | snd_tea575x_set_freq(tea); | |
319 | ||
9b76ede4 MCC |
320 | return 0; |
321 | } | |
322 | ||
323 | static int vidioc_g_frequency(struct file *file, void *priv, | |
324 | struct v4l2_frequency *f) | |
325 | { | |
326 | struct snd_tea575x *tea = video_drvdata(file); | |
327 | ||
375d1358 OZ |
328 | if (f->tuner != 0) |
329 | return -EINVAL; | |
9b76ede4 MCC |
330 | f->type = V4L2_TUNER_RADIO; |
331 | f->frequency = tea->freq; | |
332 | return 0; | |
333 | } | |
334 | ||
335 | static int vidioc_s_frequency(struct file *file, void *priv, | |
b530a447 | 336 | const struct v4l2_frequency *f) |
9b76ede4 MCC |
337 | { |
338 | struct snd_tea575x *tea = video_drvdata(file); | |
339 | ||
375d1358 OZ |
340 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
341 | return -EINVAL; | |
342 | ||
fc488517 HG |
343 | if (tea->has_am && f->frequency < (20000 * 16)) |
344 | tea->band = BAND_AM; | |
345 | else if (tea->tea5759) | |
346 | tea->band = BAND_FM_JAPAN; | |
347 | else | |
348 | tea->band = BAND_FM; | |
349 | ||
b530a447 | 350 | tea->freq = clamp_t(u32, f->frequency, bands[tea->band].rangelow, |
fc488517 | 351 | bands[tea->band].rangehigh); |
9b76ede4 | 352 | snd_tea575x_set_freq(tea); |
9b76ede4 MCC |
353 | return 0; |
354 | } | |
355 | ||
6994ca3d OZ |
356 | int snd_tea575x_s_hw_freq_seek(struct file *file, struct snd_tea575x *tea, |
357 | const struct v4l2_hw_freq_seek *a) | |
9b76ede4 | 358 | { |
bc2b395c | 359 | unsigned long timeout; |
fc488517 | 360 | int i, spacing; |
9b76ede4 | 361 | |
d4ecc83b HV |
362 | if (tea->cannot_read_data) |
363 | return -ENOTTY; | |
364 | if (a->tuner || a->wrap_around) | |
9b76ede4 | 365 | return -EINVAL; |
bc2b395c | 366 | |
617ade61 HV |
367 | if (file->f_flags & O_NONBLOCK) |
368 | return -EWOULDBLOCK; | |
369 | ||
fc488517 HG |
370 | if (a->rangelow || a->rangehigh) { |
371 | for (i = 0; i < ARRAY_SIZE(bands); i++) { | |
372 | if ((i == BAND_FM && tea->tea5759) || | |
373 | (i == BAND_FM_JAPAN && !tea->tea5759) || | |
374 | (i == BAND_AM && !tea->has_am)) | |
375 | continue; | |
376 | if (bands[i].rangelow == a->rangelow && | |
377 | bands[i].rangehigh == a->rangehigh) | |
378 | break; | |
379 | } | |
380 | if (i == ARRAY_SIZE(bands)) | |
381 | return -EINVAL; /* No matching band found */ | |
382 | if (i != tea->band) { | |
383 | tea->band = i; | |
384 | tea->freq = clamp(tea->freq, bands[i].rangelow, | |
385 | bands[i].rangehigh); | |
386 | snd_tea575x_set_freq(tea); | |
387 | } | |
388 | } | |
389 | ||
390 | spacing = (tea->band == BAND_AM) ? 5 : 50; /* kHz */ | |
391 | ||
bc2b395c HV |
392 | /* clear the frequency, HW will fill it in */ |
393 | tea->val &= ~TEA575X_BIT_FREQ_MASK; | |
d4ecc83b | 394 | tea->val |= TEA575X_BIT_SEARCH; |
d4ecc83b HV |
395 | if (a->seek_upward) |
396 | tea->val |= TEA575X_BIT_UPDOWN; | |
bc2b395c HV |
397 | else |
398 | tea->val &= ~TEA575X_BIT_UPDOWN; | |
d4ecc83b | 399 | snd_tea575x_write(tea, tea->val); |
bc2b395c | 400 | timeout = jiffies + msecs_to_jiffies(10000); |
d4ecc83b | 401 | for (;;) { |
bc2b395c HV |
402 | if (time_after(jiffies, timeout)) |
403 | break; | |
d4ecc83b HV |
404 | if (schedule_timeout_interruptible(msecs_to_jiffies(10))) { |
405 | /* some signal arrived, stop search */ | |
406 | tea->val &= ~TEA575X_BIT_SEARCH; | |
bc2b395c | 407 | snd_tea575x_set_freq(tea); |
d4ecc83b HV |
408 | return -ERESTARTSYS; |
409 | } | |
bc2b395c HV |
410 | if (!(snd_tea575x_read(tea) & TEA575X_BIT_SEARCH)) { |
411 | u32 freq; | |
412 | ||
413 | /* Found a frequency, wait until it can be read */ | |
414 | for (i = 0; i < 100; i++) { | |
415 | msleep(10); | |
416 | freq = snd_tea575x_get_freq(tea); | |
417 | if (freq) /* available */ | |
418 | break; | |
419 | } | |
420 | if (freq == 0) /* shouldn't happen */ | |
421 | break; | |
422 | /* | |
fc488517 HG |
423 | * if we moved by less than the spacing, or in the |
424 | * wrong direction, continue seeking | |
bc2b395c | 425 | */ |
fc488517 | 426 | if (abs(tea->freq - freq) < 16 * spacing || |
bc2b395c HV |
427 | (a->seek_upward && freq < tea->freq) || |
428 | (!a->seek_upward && freq > tea->freq)) { | |
429 | snd_tea575x_write(tea, tea->val); | |
430 | continue; | |
431 | } | |
432 | tea->freq = freq; | |
433 | tea->val &= ~TEA575X_BIT_SEARCH; | |
434 | return 0; | |
435 | } | |
d4ecc83b | 436 | } |
bc2b395c HV |
437 | tea->val &= ~TEA575X_BIT_SEARCH; |
438 | snd_tea575x_set_freq(tea); | |
54f6019b | 439 | return -ENODATA; |
9b76ede4 | 440 | } |
6994ca3d OZ |
441 | EXPORT_SYMBOL(snd_tea575x_s_hw_freq_seek); |
442 | ||
443 | static int vidioc_s_hw_freq_seek(struct file *file, void *fh, | |
444 | const struct v4l2_hw_freq_seek *a) | |
445 | { | |
446 | struct snd_tea575x *tea = video_drvdata(file); | |
447 | ||
448 | return snd_tea575x_s_hw_freq_seek(file, tea, a); | |
449 | } | |
9b76ede4 | 450 | |
4522e825 | 451 | static int tea575x_s_ctrl(struct v4l2_ctrl *ctrl) |
9b76ede4 | 452 | { |
4522e825 | 453 | struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler); |
9b76ede4 MCC |
454 | |
455 | switch (ctrl->id) { | |
456 | case V4L2_CID_AUDIO_MUTE: | |
4522e825 OZ |
457 | tea->mute = ctrl->val; |
458 | snd_tea575x_set_freq(tea); | |
14219d06 | 459 | return 0; |
9b76ede4 | 460 | } |
9b76ede4 | 461 | |
9b76ede4 MCC |
462 | return -EINVAL; |
463 | } | |
464 | ||
9b76ede4 | 465 | static const struct v4l2_file_operations tea575x_fops = { |
6a529c1a | 466 | .unlocked_ioctl = video_ioctl2, |
d4ecc83b HV |
467 | .open = v4l2_fh_open, |
468 | .release = v4l2_fh_release, | |
469 | .poll = v4l2_ctrl_poll, | |
9b76ede4 MCC |
470 | }; |
471 | ||
472 | static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { | |
473 | .vidioc_querycap = vidioc_querycap, | |
474 | .vidioc_g_tuner = vidioc_g_tuner, | |
475 | .vidioc_s_tuner = vidioc_s_tuner, | |
9b76ede4 MCC |
476 | .vidioc_g_frequency = vidioc_g_frequency, |
477 | .vidioc_s_frequency = vidioc_s_frequency, | |
d4ecc83b | 478 | .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, |
fc488517 | 479 | .vidioc_enum_freq_bands = vidioc_enum_freq_bands, |
d4ecc83b HV |
480 | .vidioc_log_status = v4l2_ctrl_log_status, |
481 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
482 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
9b76ede4 MCC |
483 | }; |
484 | ||
d4ecc83b | 485 | static const struct video_device tea575x_radio = { |
6e6a8b5a | 486 | .ioctl_ops = &tea575x_ioctl_ops, |
d4ecc83b | 487 | .release = video_device_release_empty, |
4522e825 OZ |
488 | }; |
489 | ||
490 | static const struct v4l2_ctrl_ops tea575x_ctrl_ops = { | |
491 | .s_ctrl = tea575x_s_ctrl, | |
9b76ede4 MCC |
492 | }; |
493 | ||
1da177e4 | 494 | |
8fd79579 OZ |
495 | int snd_tea575x_hw_init(struct snd_tea575x *tea) |
496 | { | |
d4ecc83b | 497 | tea->mute = true; |
14219d06 | 498 | |
d4ecc83b HV |
499 | /* Not all devices can or know how to read the data back. |
500 | Such devices can set cannot_read_data to true. */ | |
501 | if (!tea->cannot_read_data) { | |
502 | snd_tea575x_write(tea, 0x55AA); | |
503 | if (snd_tea575x_read(tea) != 0x55AA) | |
504 | return -ENODEV; | |
505 | } | |
1da177e4 | 506 | |
bc2b395c | 507 | tea->val = TEA575X_BIT_BAND_FM | TEA575X_BIT_SEARCH_5_28; |
9b76ede4 | 508 | tea->freq = 90500 * 16; /* 90.5Mhz default */ |
4522e825 | 509 | snd_tea575x_set_freq(tea); |
9b76ede4 | 510 | |
8fd79579 OZ |
511 | return 0; |
512 | } | |
513 | EXPORT_SYMBOL(snd_tea575x_hw_init); | |
514 | ||
515 | int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner) | |
516 | { | |
517 | int retval = snd_tea575x_hw_init(tea); | |
518 | ||
519 | if (retval) | |
520 | return retval; | |
521 | ||
4522e825 OZ |
522 | tea->vd = tea575x_radio; |
523 | video_set_drvdata(&tea->vd, tea); | |
6a529c1a | 524 | mutex_init(&tea->mutex); |
c0decac1 | 525 | strscpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name)); |
6a529c1a | 526 | tea->vd.lock = &tea->mutex; |
d4ecc83b | 527 | tea->vd.v4l2_dev = tea->v4l2_dev; |
e83ce300 HV |
528 | tea->vd.device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
529 | if (!tea->cannot_read_data) | |
530 | tea->vd.device_caps |= V4L2_CAP_HW_FREQ_SEEK; | |
5daf53a6 HG |
531 | tea->fops = tea575x_fops; |
532 | tea->fops.owner = owner; | |
533 | tea->vd.fops = &tea->fops; | |
65397995 HV |
534 | /* disable hw_freq_seek if we can't use it */ |
535 | if (tea->cannot_read_data) | |
152a3a73 | 536 | v4l2_disable_ioctl(&tea->vd, VIDIOC_S_HW_FREQ_SEEK); |
1da177e4 | 537 | |
3d0fe51c HG |
538 | if (!tea->cannot_mute) { |
539 | tea->vd.ctrl_handler = &tea->ctrl_handler; | |
540 | v4l2_ctrl_handler_init(&tea->ctrl_handler, 1); | |
541 | v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, | |
542 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
543 | retval = tea->ctrl_handler.error; | |
4522e825 | 544 | if (retval) { |
3d0fe51c | 545 | v4l2_err(tea->v4l2_dev, "can't initialize controls\n"); |
4522e825 OZ |
546 | v4l2_ctrl_handler_free(&tea->ctrl_handler); |
547 | return retval; | |
548 | } | |
9b76ede4 | 549 | |
3d0fe51c HG |
550 | if (tea->ext_init) { |
551 | retval = tea->ext_init(tea); | |
552 | if (retval) { | |
553 | v4l2_ctrl_handler_free(&tea->ctrl_handler); | |
554 | return retval; | |
555 | } | |
556 | } | |
557 | ||
558 | v4l2_ctrl_handler_setup(&tea->ctrl_handler); | |
559 | } | |
9b76ede4 | 560 | |
d4ecc83b | 561 | retval = video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->radio_nr); |
9b76ede4 | 562 | if (retval) { |
d4ecc83b | 563 | v4l2_err(tea->v4l2_dev, "can't register video device!\n"); |
3d0fe51c | 564 | v4l2_ctrl_handler_free(tea->vd.ctrl_handler); |
14219d06 | 565 | return retval; |
9b76ede4 | 566 | } |
1da177e4 | 567 | |
14219d06 | 568 | return 0; |
1da177e4 | 569 | } |
0e2a706b | 570 | EXPORT_SYMBOL(snd_tea575x_init); |
1da177e4 | 571 | |
97f02e05 | 572 | void snd_tea575x_exit(struct snd_tea575x *tea) |
1da177e4 | 573 | { |
4522e825 | 574 | video_unregister_device(&tea->vd); |
3d0fe51c | 575 | v4l2_ctrl_handler_free(tea->vd.ctrl_handler); |
1da177e4 | 576 | } |
1da177e4 | 577 | EXPORT_SYMBOL(snd_tea575x_exit); |