1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips |
4 | * |
5 | * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> |
6 | * |
7 | * Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips: |
8 | * |
9 | * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> |
10 | */ |
11 | |
12 | #include <linux/delay.h> |
13 | #include <linux/init.h> |
14 | #include <linux/module.h> |
15 | #include <linux/sched.h> |
16 | #include <linux/slab.h> |
17 | #include <media/v4l2-device.h> |
18 | #include <media/v4l2-dev.h> |
19 | #include <media/v4l2-fh.h> |
20 | #include <media/v4l2-ioctl.h> |
21 | #include <media/v4l2-event.h> |
22 | #include "radio-tea5777.h" |
23 | |
24 | MODULE_AUTHOR("Hans de Goede <perex@perex.cz>" ); |
25 | MODULE_DESCRIPTION("Routines for control of TEA5777 Philips AM/FM radio tuner chips" ); |
26 | MODULE_LICENSE("GPL" ); |
27 | |
28 | #define TEA5777_FM_IF 150 /* kHz */ |
29 | #define TEA5777_FM_FREQ_STEP 50 /* kHz */ |
30 | |
31 | #define TEA5777_AM_IF 21 /* kHz */ |
32 | #define TEA5777_AM_FREQ_STEP 1 /* kHz */ |
33 | |
34 | /* Write reg, common bits */ |
35 | #define TEA5777_W_MUTE_MASK (1LL << 47) |
36 | #define TEA5777_W_MUTE_SHIFT 47 |
37 | #define TEA5777_W_AM_FM_MASK (1LL << 46) |
38 | #define TEA5777_W_AM_FM_SHIFT 46 |
39 | #define TEA5777_W_STB_MASK (1LL << 45) |
40 | #define TEA5777_W_STB_SHIFT 45 |
41 | |
42 | #define TEA5777_W_IFCE_MASK (1LL << 29) |
43 | #define TEA5777_W_IFCE_SHIFT 29 |
44 | #define TEA5777_W_IFW_MASK (1LL << 28) |
45 | #define TEA5777_W_IFW_SHIFT 28 |
46 | #define TEA5777_W_HILO_MASK (1LL << 27) |
47 | #define TEA5777_W_HILO_SHIFT 27 |
48 | #define TEA5777_W_DBUS_MASK (1LL << 26) |
49 | #define TEA5777_W_DBUS_SHIFT 26 |
50 | |
51 | #define TEA5777_W_INTEXT_MASK (1LL << 24) |
52 | #define TEA5777_W_INTEXT_SHIFT 24 |
53 | #define TEA5777_W_P1_MASK (1LL << 23) |
54 | #define TEA5777_W_P1_SHIFT 23 |
55 | #define TEA5777_W_P0_MASK (1LL << 22) |
56 | #define TEA5777_W_P0_SHIFT 22 |
57 | #define TEA5777_W_PEN1_MASK (1LL << 21) |
58 | #define TEA5777_W_PEN1_SHIFT 21 |
59 | #define TEA5777_W_PEN0_MASK (1LL << 20) |
60 | #define TEA5777_W_PEN0_SHIFT 20 |
61 | |
62 | #define TEA5777_W_CHP0_MASK (1LL << 18) |
63 | #define TEA5777_W_CHP0_SHIFT 18 |
64 | #define TEA5777_W_DEEM_MASK (1LL << 17) |
65 | #define TEA5777_W_DEEM_SHIFT 17 |
66 | |
67 | #define TEA5777_W_SEARCH_MASK (1LL << 7) |
68 | #define TEA5777_W_SEARCH_SHIFT 7 |
69 | #define TEA5777_W_PROGBLIM_MASK (1LL << 6) |
70 | #define TEA5777_W_PROGBLIM_SHIFT 6 |
71 | #define TEA5777_W_UPDWN_MASK (1LL << 5) |
72 | #define TEA5777_W_UPDWN_SHIFT 5 |
73 | #define TEA5777_W_SLEV_MASK (3LL << 3) |
74 | #define TEA5777_W_SLEV_SHIFT 3 |
75 | |
76 | /* Write reg, FM specific bits */ |
77 | #define TEA5777_W_FM_PLL_MASK (0x1fffLL << 32) |
78 | #define TEA5777_W_FM_PLL_SHIFT 32 |
79 | #define TEA5777_W_FM_FREF_MASK (0x03LL << 30) |
80 | #define TEA5777_W_FM_FREF_SHIFT 30 |
81 | #define TEA5777_W_FM_FREF_VALUE 0LL /* 50k steps, 150k IF */ |
82 | |
83 | #define TEA5777_W_FM_FORCEMONO_MASK (1LL << 15) |
84 | #define TEA5777_W_FM_FORCEMONO_SHIFT 15 |
85 | #define TEA5777_W_FM_SDSOFF_MASK (1LL << 14) |
86 | #define TEA5777_W_FM_SDSOFF_SHIFT 14 |
87 | #define TEA5777_W_FM_DOFF_MASK (1LL << 13) |
88 | #define TEA5777_W_FM_DOFF_SHIFT 13 |
89 | |
90 | #define TEA5777_W_FM_STEP_MASK (3LL << 1) |
91 | #define TEA5777_W_FM_STEP_SHIFT 1 |
92 | |
93 | /* Write reg, AM specific bits */ |
94 | #define TEA5777_W_AM_PLL_MASK (0x7ffLL << 34) |
95 | #define TEA5777_W_AM_PLL_SHIFT 34 |
96 | #define TEA5777_W_AM_AGCRF_MASK (1LL << 33) |
97 | #define TEA5777_W_AM_AGCRF_SHIFT 33 |
98 | #define TEA5777_W_AM_AGCIF_MASK (1LL << 32) |
99 | #define TEA5777_W_AM_AGCIF_SHIFT 32 |
100 | #define TEA5777_W_AM_MWLW_MASK (1LL << 31) |
101 | #define TEA5777_W_AM_MWLW_SHIFT 31 |
102 | #define TEA5777_W_AM_LW 0LL |
103 | #define TEA5777_W_AM_MW 1LL |
104 | #define TEA5777_W_AM_LNA_MASK (1LL << 30) |
105 | #define TEA5777_W_AM_LNA_SHIFT 30 |
106 | |
107 | #define TEA5777_W_AM_PEAK_MASK (1LL << 25) |
108 | #define TEA5777_W_AM_PEAK_SHIFT 25 |
109 | |
110 | #define TEA5777_W_AM_RFB_MASK (1LL << 16) |
111 | #define TEA5777_W_AM_RFB_SHIFT 16 |
112 | #define TEA5777_W_AM_CALLIGN_MASK (1LL << 15) |
113 | #define TEA5777_W_AM_CALLIGN_SHIFT 15 |
114 | #define TEA5777_W_AM_CBANK_MASK (0x7fLL << 8) |
115 | #define TEA5777_W_AM_CBANK_SHIFT 8 |
116 | |
117 | #define TEA5777_W_AM_DELAY_MASK (1LL << 2) |
118 | #define TEA5777_W_AM_DELAY_SHIFT 2 |
119 | #define TEA5777_W_AM_STEP_MASK (1LL << 1) |
120 | #define TEA5777_W_AM_STEP_SHIFT 1 |
121 | |
122 | /* Read reg, common bits */ |
123 | #define TEA5777_R_LEVEL_MASK (0x0f << 17) |
124 | #define TEA5777_R_LEVEL_SHIFT 17 |
125 | #define TEA5777_R_SFOUND_MASK (0x01 << 16) |
126 | #define TEA5777_R_SFOUND_SHIFT 16 |
127 | #define TEA5777_R_BLIM_MASK (0x01 << 15) |
128 | #define TEA5777_R_BLIM_SHIFT 15 |
129 | |
130 | /* Read reg, FM specific bits */ |
131 | #define TEA5777_R_FM_STEREO_MASK (0x01 << 21) |
132 | #define TEA5777_R_FM_STEREO_SHIFT 21 |
133 | #define TEA5777_R_FM_PLL_MASK 0x1fff |
134 | #define TEA5777_R_FM_PLL_SHIFT 0 |
135 | |
136 | enum { BAND_FM, BAND_AM }; |
137 | |
138 | static const struct v4l2_frequency_band bands[] = { |
139 | { |
140 | .type = V4L2_TUNER_RADIO, |
141 | .index = 0, |
142 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
143 | V4L2_TUNER_CAP_FREQ_BANDS | |
144 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | |
145 | V4L2_TUNER_CAP_HWSEEK_PROG_LIM, |
146 | .rangelow = 76000 * 16, |
147 | .rangehigh = 108000 * 16, |
148 | .modulation = V4L2_BAND_MODULATION_FM, |
149 | }, |
150 | { |
151 | .type = V4L2_TUNER_RADIO, |
152 | .index = 1, |
153 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS | |
154 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | |
155 | V4L2_TUNER_CAP_HWSEEK_PROG_LIM, |
156 | .rangelow = 530 * 16, |
157 | .rangehigh = 1710 * 16, |
158 | .modulation = V4L2_BAND_MODULATION_AM, |
159 | }, |
160 | }; |
161 | |
162 | static u32 tea5777_freq_to_v4l2_freq(struct radio_tea5777 *tea, u32 freq) |
163 | { |
164 | switch (tea->band) { |
165 | case BAND_FM: |
166 | return (freq * TEA5777_FM_FREQ_STEP + TEA5777_FM_IF) * 16; |
167 | case BAND_AM: |
168 | return (freq * TEA5777_AM_FREQ_STEP + TEA5777_AM_IF) * 16; |
169 | } |
170 | return 0; /* Never reached */ |
171 | } |
172 | |
173 | int radio_tea5777_set_freq(struct radio_tea5777 *tea) |
174 | { |
175 | u32 freq; |
176 | int res; |
177 | |
178 | freq = clamp(tea->freq, bands[tea->band].rangelow, |
179 | bands[tea->band].rangehigh); |
180 | freq = (freq + 8) / 16; /* to kHz */ |
181 | |
182 | switch (tea->band) { |
183 | case BAND_FM: |
184 | tea->write_reg &= ~TEA5777_W_AM_FM_MASK; |
185 | freq = (freq - TEA5777_FM_IF) / TEA5777_FM_FREQ_STEP; |
186 | tea->write_reg &= ~TEA5777_W_FM_PLL_MASK; |
187 | tea->write_reg |= (u64)freq << TEA5777_W_FM_PLL_SHIFT; |
188 | tea->write_reg &= ~TEA5777_W_FM_FREF_MASK; |
189 | tea->write_reg |= TEA5777_W_FM_FREF_VALUE << |
190 | TEA5777_W_FM_FREF_SHIFT; |
191 | tea->write_reg &= ~TEA5777_W_FM_FORCEMONO_MASK; |
192 | if (tea->audmode == V4L2_TUNER_MODE_MONO) |
193 | tea->write_reg |= 1LL << TEA5777_W_FM_FORCEMONO_SHIFT; |
194 | break; |
195 | case BAND_AM: |
196 | tea->write_reg &= ~TEA5777_W_AM_FM_MASK; |
197 | tea->write_reg |= (1LL << TEA5777_W_AM_FM_SHIFT); |
198 | freq = (freq - TEA5777_AM_IF) / TEA5777_AM_FREQ_STEP; |
199 | tea->write_reg &= ~TEA5777_W_AM_PLL_MASK; |
200 | tea->write_reg |= (u64)freq << TEA5777_W_AM_PLL_SHIFT; |
201 | tea->write_reg &= ~TEA5777_W_AM_AGCRF_MASK; |
202 | tea->write_reg &= ~TEA5777_W_AM_AGCRF_MASK; |
203 | tea->write_reg &= ~TEA5777_W_AM_MWLW_MASK; |
204 | tea->write_reg |= TEA5777_W_AM_MW << TEA5777_W_AM_MWLW_SHIFT; |
205 | tea->write_reg &= ~TEA5777_W_AM_LNA_MASK; |
206 | tea->write_reg |= 1LL << TEA5777_W_AM_LNA_SHIFT; |
207 | tea->write_reg &= ~TEA5777_W_AM_PEAK_MASK; |
208 | tea->write_reg |= 1LL << TEA5777_W_AM_PEAK_SHIFT; |
209 | tea->write_reg &= ~TEA5777_W_AM_CALLIGN_MASK; |
210 | break; |
211 | } |
212 | |
213 | res = tea->ops->write_reg(tea, tea->write_reg); |
214 | if (res) |
215 | return res; |
216 | |
217 | tea->needs_write = false; |
218 | tea->read_reg = -1; |
219 | tea->freq = tea5777_freq_to_v4l2_freq(tea, freq); |
220 | |
221 | return 0; |
222 | } |
223 | |
224 | static int radio_tea5777_update_read_reg(struct radio_tea5777 *tea, int wait) |
225 | { |
226 | int res; |
227 | |
228 | if (tea->read_reg != -1) |
229 | return 0; |
230 | |
231 | if (tea->write_before_read && tea->needs_write) { |
232 | res = radio_tea5777_set_freq(tea); |
233 | if (res) |
234 | return res; |
235 | } |
236 | |
237 | if (wait) { |
238 | if (schedule_timeout_interruptible(timeout: msecs_to_jiffies(m: wait))) |
239 | return -ERESTARTSYS; |
240 | } |
241 | |
242 | res = tea->ops->read_reg(tea, &tea->read_reg); |
243 | if (res) |
244 | return res; |
245 | |
246 | tea->needs_write = true; |
247 | return 0; |
248 | } |
249 | |
250 | /* |
251 | * Linux Video interface |
252 | */ |
253 | |
254 | static int vidioc_querycap(struct file *file, void *priv, |
255 | struct v4l2_capability *v) |
256 | { |
257 | struct radio_tea5777 *tea = video_drvdata(file); |
258 | |
259 | strscpy(v->driver, tea->v4l2_dev->name, sizeof(v->driver)); |
260 | strscpy(v->card, tea->card, sizeof(v->card)); |
261 | strlcat(p: v->card, q: " TEA5777" , avail: sizeof(v->card)); |
262 | strscpy(v->bus_info, tea->bus_info, sizeof(v->bus_info)); |
263 | return 0; |
264 | } |
265 | |
266 | static int vidioc_enum_freq_bands(struct file *file, void *priv, |
267 | struct v4l2_frequency_band *band) |
268 | { |
269 | struct radio_tea5777 *tea = video_drvdata(file); |
270 | |
271 | if (band->tuner != 0 || band->index >= ARRAY_SIZE(bands) || |
272 | (!tea->has_am && band->index == BAND_AM)) |
273 | return -EINVAL; |
274 | |
275 | *band = bands[band->index]; |
276 | return 0; |
277 | } |
278 | |
279 | static int vidioc_g_tuner(struct file *file, void *priv, |
280 | struct v4l2_tuner *v) |
281 | { |
282 | struct radio_tea5777 *tea = video_drvdata(file); |
283 | int res; |
284 | |
285 | if (v->index > 0) |
286 | return -EINVAL; |
287 | |
288 | res = radio_tea5777_update_read_reg(tea, wait: 0); |
289 | if (res) |
290 | return res; |
291 | |
292 | memset(v, 0, sizeof(*v)); |
293 | if (tea->has_am) |
294 | strscpy(v->name, "AM/FM" , sizeof(v->name)); |
295 | else |
296 | strscpy(v->name, "FM" , sizeof(v->name)); |
297 | v->type = V4L2_TUNER_RADIO; |
298 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
299 | V4L2_TUNER_CAP_FREQ_BANDS | |
300 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | |
301 | V4L2_TUNER_CAP_HWSEEK_PROG_LIM; |
302 | v->rangelow = tea->has_am ? bands[BAND_AM].rangelow : |
303 | bands[BAND_FM].rangelow; |
304 | v->rangehigh = bands[BAND_FM].rangehigh; |
305 | if (tea->band == BAND_FM && |
306 | (tea->read_reg & TEA5777_R_FM_STEREO_MASK)) |
307 | v->rxsubchans = V4L2_TUNER_SUB_STEREO; |
308 | else |
309 | v->rxsubchans = V4L2_TUNER_SUB_MONO; |
310 | v->audmode = tea->audmode; |
311 | /* shift - 12 to convert 4-bits (0-15) scale to 16-bits (0-65535) */ |
312 | v->signal = (tea->read_reg & TEA5777_R_LEVEL_MASK) >> |
313 | (TEA5777_R_LEVEL_SHIFT - 12); |
314 | |
315 | /* Invalidate read_reg, so that next call we return up2date signal */ |
316 | tea->read_reg = -1; |
317 | |
318 | return 0; |
319 | } |
320 | |
321 | static int vidioc_s_tuner(struct file *file, void *priv, |
322 | const struct v4l2_tuner *v) |
323 | { |
324 | struct radio_tea5777 *tea = video_drvdata(file); |
325 | u32 orig_audmode = tea->audmode; |
326 | |
327 | if (v->index) |
328 | return -EINVAL; |
329 | |
330 | tea->audmode = v->audmode; |
331 | if (tea->audmode > V4L2_TUNER_MODE_STEREO) |
332 | tea->audmode = V4L2_TUNER_MODE_STEREO; |
333 | |
334 | if (tea->audmode != orig_audmode && tea->band == BAND_FM) |
335 | return radio_tea5777_set_freq(tea); |
336 | |
337 | return 0; |
338 | } |
339 | |
340 | static int vidioc_g_frequency(struct file *file, void *priv, |
341 | struct v4l2_frequency *f) |
342 | { |
343 | struct radio_tea5777 *tea = video_drvdata(file); |
344 | |
345 | if (f->tuner != 0) |
346 | return -EINVAL; |
347 | f->type = V4L2_TUNER_RADIO; |
348 | f->frequency = tea->freq; |
349 | return 0; |
350 | } |
351 | |
352 | static int vidioc_s_frequency(struct file *file, void *priv, |
353 | const struct v4l2_frequency *f) |
354 | { |
355 | struct radio_tea5777 *tea = video_drvdata(file); |
356 | |
357 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
358 | return -EINVAL; |
359 | |
360 | if (tea->has_am && f->frequency < (20000 * 16)) |
361 | tea->band = BAND_AM; |
362 | else |
363 | tea->band = BAND_FM; |
364 | |
365 | tea->freq = f->frequency; |
366 | return radio_tea5777_set_freq(tea); |
367 | } |
368 | |
369 | static int vidioc_s_hw_freq_seek(struct file *file, void *fh, |
370 | const struct v4l2_hw_freq_seek *a) |
371 | { |
372 | struct radio_tea5777 *tea = video_drvdata(file); |
373 | unsigned long timeout; |
374 | u32 rangelow = a->rangelow; |
375 | u32 rangehigh = a->rangehigh; |
376 | int i, res, spacing; |
377 | u32 orig_freq; |
378 | |
379 | if (a->tuner || a->wrap_around) |
380 | return -EINVAL; |
381 | |
382 | if (file->f_flags & O_NONBLOCK) |
383 | return -EWOULDBLOCK; |
384 | |
385 | if (rangelow || rangehigh) { |
386 | for (i = 0; i < ARRAY_SIZE(bands); i++) { |
387 | if (i == BAND_AM && !tea->has_am) |
388 | continue; |
389 | if (bands[i].rangelow >= rangelow && |
390 | bands[i].rangehigh <= rangehigh) |
391 | break; |
392 | } |
393 | if (i == ARRAY_SIZE(bands)) |
394 | return -EINVAL; /* No matching band found */ |
395 | |
396 | tea->band = i; |
397 | if (tea->freq < rangelow || tea->freq > rangehigh) { |
398 | tea->freq = clamp(tea->freq, rangelow, |
399 | rangehigh); |
400 | res = radio_tea5777_set_freq(tea); |
401 | if (res) |
402 | return res; |
403 | } |
404 | } else { |
405 | rangelow = bands[tea->band].rangelow; |
406 | rangehigh = bands[tea->band].rangehigh; |
407 | } |
408 | |
409 | spacing = (tea->band == BAND_AM) ? (5 * 16) : (200 * 16); /* kHz */ |
410 | orig_freq = tea->freq; |
411 | |
412 | tea->write_reg |= TEA5777_W_PROGBLIM_MASK; |
413 | if (tea->seek_rangelow != rangelow) { |
414 | tea->write_reg &= ~TEA5777_W_UPDWN_MASK; |
415 | tea->freq = rangelow; |
416 | res = radio_tea5777_set_freq(tea); |
417 | if (res) |
418 | goto leave; |
419 | tea->seek_rangelow = rangelow; |
420 | } |
421 | if (tea->seek_rangehigh != rangehigh) { |
422 | tea->write_reg |= TEA5777_W_UPDWN_MASK; |
423 | tea->freq = rangehigh; |
424 | res = radio_tea5777_set_freq(tea); |
425 | if (res) |
426 | goto leave; |
427 | tea->seek_rangehigh = rangehigh; |
428 | } |
429 | tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; |
430 | |
431 | tea->write_reg |= TEA5777_W_SEARCH_MASK; |
432 | if (a->seek_upward) { |
433 | tea->write_reg |= TEA5777_W_UPDWN_MASK; |
434 | tea->freq = orig_freq + spacing; |
435 | } else { |
436 | tea->write_reg &= ~TEA5777_W_UPDWN_MASK; |
437 | tea->freq = orig_freq - spacing; |
438 | } |
439 | res = radio_tea5777_set_freq(tea); |
440 | if (res) |
441 | goto leave; |
442 | |
443 | timeout = jiffies + msecs_to_jiffies(m: 5000); |
444 | for (;;) { |
445 | if (time_after(jiffies, timeout)) { |
446 | res = -ENODATA; |
447 | break; |
448 | } |
449 | |
450 | res = radio_tea5777_update_read_reg(tea, wait: 100); |
451 | if (res) |
452 | break; |
453 | |
454 | /* |
455 | * Note we use tea->freq to track how far we've searched sofar |
456 | * this is necessary to ensure we continue seeking at the right |
457 | * point, in the write_before_read case. |
458 | */ |
459 | tea->freq = (tea->read_reg & TEA5777_R_FM_PLL_MASK); |
460 | tea->freq = tea5777_freq_to_v4l2_freq(tea, freq: tea->freq); |
461 | |
462 | if ((tea->read_reg & TEA5777_R_SFOUND_MASK)) { |
463 | tea->write_reg &= ~TEA5777_W_SEARCH_MASK; |
464 | return 0; |
465 | } |
466 | |
467 | if (tea->read_reg & TEA5777_R_BLIM_MASK) { |
468 | res = -ENODATA; |
469 | break; |
470 | } |
471 | |
472 | /* Force read_reg update */ |
473 | tea->read_reg = -1; |
474 | } |
475 | leave: |
476 | tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; |
477 | tea->write_reg &= ~TEA5777_W_SEARCH_MASK; |
478 | tea->freq = orig_freq; |
479 | radio_tea5777_set_freq(tea); |
480 | return res; |
481 | } |
482 | |
483 | static int tea575x_s_ctrl(struct v4l2_ctrl *c) |
484 | { |
485 | struct radio_tea5777 *tea = |
486 | container_of(c->handler, struct radio_tea5777, ctrl_handler); |
487 | |
488 | switch (c->id) { |
489 | case V4L2_CID_AUDIO_MUTE: |
490 | if (c->val) |
491 | tea->write_reg |= TEA5777_W_MUTE_MASK; |
492 | else |
493 | tea->write_reg &= ~TEA5777_W_MUTE_MASK; |
494 | |
495 | return radio_tea5777_set_freq(tea); |
496 | } |
497 | |
498 | return -EINVAL; |
499 | } |
500 | |
501 | static const struct v4l2_file_operations tea575x_fops = { |
502 | .unlocked_ioctl = video_ioctl2, |
503 | .open = v4l2_fh_open, |
504 | .release = v4l2_fh_release, |
505 | .poll = v4l2_ctrl_poll, |
506 | }; |
507 | |
508 | static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { |
509 | .vidioc_querycap = vidioc_querycap, |
510 | .vidioc_g_tuner = vidioc_g_tuner, |
511 | .vidioc_s_tuner = vidioc_s_tuner, |
512 | .vidioc_g_frequency = vidioc_g_frequency, |
513 | .vidioc_s_frequency = vidioc_s_frequency, |
514 | .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, |
515 | .vidioc_enum_freq_bands = vidioc_enum_freq_bands, |
516 | .vidioc_log_status = v4l2_ctrl_log_status, |
517 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
518 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
519 | }; |
520 | |
521 | static const struct video_device tea575x_radio = { |
522 | .ioctl_ops = &tea575x_ioctl_ops, |
523 | .release = video_device_release_empty, |
524 | }; |
525 | |
526 | static const struct v4l2_ctrl_ops tea575x_ctrl_ops = { |
527 | .s_ctrl = tea575x_s_ctrl, |
528 | }; |
529 | |
530 | int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner) |
531 | { |
532 | int res; |
533 | |
534 | tea->write_reg = (1LL << TEA5777_W_IFCE_SHIFT) | |
535 | (1LL << TEA5777_W_IFW_SHIFT) | |
536 | (1LL << TEA5777_W_INTEXT_SHIFT) | |
537 | (1LL << TEA5777_W_CHP0_SHIFT) | |
538 | (1LL << TEA5777_W_SLEV_SHIFT); |
539 | tea->freq = 90500 * 16; /* 90.5Mhz default */ |
540 | tea->audmode = V4L2_TUNER_MODE_STEREO; |
541 | res = radio_tea5777_set_freq(tea); |
542 | if (res) { |
543 | v4l2_err(tea->v4l2_dev, "can't set initial freq (%d)\n" , res); |
544 | return res; |
545 | } |
546 | |
547 | tea->vd = tea575x_radio; |
548 | video_set_drvdata(vdev: &tea->vd, data: tea); |
549 | mutex_init(&tea->mutex); |
550 | strscpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name)); |
551 | tea->vd.lock = &tea->mutex; |
552 | tea->vd.v4l2_dev = tea->v4l2_dev; |
553 | tea->vd.device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO | |
554 | V4L2_CAP_HW_FREQ_SEEK; |
555 | tea->fops = tea575x_fops; |
556 | tea->fops.owner = owner; |
557 | tea->vd.fops = &tea->fops; |
558 | |
559 | tea->vd.ctrl_handler = &tea->ctrl_handler; |
560 | v4l2_ctrl_handler_init(&tea->ctrl_handler, 1); |
561 | v4l2_ctrl_new_std(hdl: &tea->ctrl_handler, ops: &tea575x_ctrl_ops, |
562 | V4L2_CID_AUDIO_MUTE, min: 0, max: 1, step: 1, def: 1); |
563 | res = tea->ctrl_handler.error; |
564 | if (res) { |
565 | v4l2_err(tea->v4l2_dev, "can't initialize controls\n" ); |
566 | v4l2_ctrl_handler_free(hdl: &tea->ctrl_handler); |
567 | return res; |
568 | } |
569 | v4l2_ctrl_handler_setup(hdl: &tea->ctrl_handler); |
570 | |
571 | res = video_register_device(vdev: &tea->vd, type: VFL_TYPE_RADIO, nr: -1); |
572 | if (res) { |
573 | v4l2_err(tea->v4l2_dev, "can't register video device!\n" ); |
574 | v4l2_ctrl_handler_free(hdl: tea->vd.ctrl_handler); |
575 | return res; |
576 | } |
577 | |
578 | return 0; |
579 | } |
580 | EXPORT_SYMBOL_GPL(radio_tea5777_init); |
581 | |
582 | void radio_tea5777_exit(struct radio_tea5777 *tea) |
583 | { |
584 | video_unregister_device(vdev: &tea->vd); |
585 | v4l2_ctrl_handler_free(hdl: tea->vd.ctrl_handler); |
586 | } |
587 | EXPORT_SYMBOL_GPL(radio_tea5777_exit); |
588 | |