Commit | Line | Data |
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4faba767 HG |
1 | /* |
2 | * v4l2 driver for TEA5777 Philips AM/FM radio tuner chips | |
3 | * | |
4 | * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> | |
5 | * | |
6 | * Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips: | |
7 | * | |
8 | * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <linux/delay.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/sched.h> | |
30 | #include <linux/slab.h> | |
31 | #include <media/v4l2-device.h> | |
32 | #include <media/v4l2-dev.h> | |
33 | #include <media/v4l2-fh.h> | |
34 | #include <media/v4l2-ioctl.h> | |
35 | #include <media/v4l2-event.h> | |
36 | #include "radio-tea5777.h" | |
37 | ||
38 | MODULE_AUTHOR("Hans de Goede <perex@perex.cz>"); | |
39 | MODULE_DESCRIPTION("Routines for control of TEA5777 Philips AM/FM radio tuner chips"); | |
40 | MODULE_LICENSE("GPL"); | |
41 | ||
4faba767 | 42 | #define TEA5777_FM_IF 150 /* kHz */ |
d7aab0bf HG |
43 | #define TEA5777_FM_FREQ_STEP 50 /* kHz */ |
44 | ||
45 | #define TEA5777_AM_IF 21 /* kHz */ | |
46 | #define TEA5777_AM_FREQ_STEP 1 /* kHz */ | |
4faba767 HG |
47 | |
48 | /* Write reg, common bits */ | |
49 | #define TEA5777_W_MUTE_MASK (1LL << 47) | |
50 | #define TEA5777_W_MUTE_SHIFT 47 | |
51 | #define TEA5777_W_AM_FM_MASK (1LL << 46) | |
52 | #define TEA5777_W_AM_FM_SHIFT 46 | |
53 | #define TEA5777_W_STB_MASK (1LL << 45) | |
54 | #define TEA5777_W_STB_SHIFT 45 | |
55 | ||
56 | #define TEA5777_W_IFCE_MASK (1LL << 29) | |
57 | #define TEA5777_W_IFCE_SHIFT 29 | |
58 | #define TEA5777_W_IFW_MASK (1LL << 28) | |
59 | #define TEA5777_W_IFW_SHIFT 28 | |
60 | #define TEA5777_W_HILO_MASK (1LL << 27) | |
61 | #define TEA5777_W_HILO_SHIFT 27 | |
62 | #define TEA5777_W_DBUS_MASK (1LL << 26) | |
63 | #define TEA5777_W_DBUS_SHIFT 26 | |
64 | ||
65 | #define TEA5777_W_INTEXT_MASK (1LL << 24) | |
66 | #define TEA5777_W_INTEXT_SHIFT 24 | |
67 | #define TEA5777_W_P1_MASK (1LL << 23) | |
68 | #define TEA5777_W_P1_SHIFT 23 | |
69 | #define TEA5777_W_P0_MASK (1LL << 22) | |
70 | #define TEA5777_W_P0_SHIFT 22 | |
71 | #define TEA5777_W_PEN1_MASK (1LL << 21) | |
72 | #define TEA5777_W_PEN1_SHIFT 21 | |
73 | #define TEA5777_W_PEN0_MASK (1LL << 20) | |
74 | #define TEA5777_W_PEN0_SHIFT 20 | |
75 | ||
76 | #define TEA5777_W_CHP0_MASK (1LL << 18) | |
77 | #define TEA5777_W_CHP0_SHIFT 18 | |
78 | #define TEA5777_W_DEEM_MASK (1LL << 17) | |
79 | #define TEA5777_W_DEEM_SHIFT 17 | |
80 | ||
81 | #define TEA5777_W_SEARCH_MASK (1LL << 7) | |
82 | #define TEA5777_W_SEARCH_SHIFT 7 | |
83 | #define TEA5777_W_PROGBLIM_MASK (1LL << 6) | |
84 | #define TEA5777_W_PROGBLIM_SHIFT 6 | |
85 | #define TEA5777_W_UPDWN_MASK (1LL << 5) | |
86 | #define TEA5777_W_UPDWN_SHIFT 5 | |
87 | #define TEA5777_W_SLEV_MASK (3LL << 3) | |
88 | #define TEA5777_W_SLEV_SHIFT 3 | |
89 | ||
90 | /* Write reg, FM specific bits */ | |
91 | #define TEA5777_W_FM_PLL_MASK (0x1fffLL << 32) | |
92 | #define TEA5777_W_FM_PLL_SHIFT 32 | |
93 | #define TEA5777_W_FM_FREF_MASK (0x03LL << 30) | |
94 | #define TEA5777_W_FM_FREF_SHIFT 30 | |
d7aab0bf | 95 | #define TEA5777_W_FM_FREF_VALUE 0LL /* 50k steps, 150k IF */ |
4faba767 HG |
96 | |
97 | #define TEA5777_W_FM_FORCEMONO_MASK (1LL << 15) | |
98 | #define TEA5777_W_FM_FORCEMONO_SHIFT 15 | |
99 | #define TEA5777_W_FM_SDSOFF_MASK (1LL << 14) | |
100 | #define TEA5777_W_FM_SDSOFF_SHIFT 14 | |
101 | #define TEA5777_W_FM_DOFF_MASK (1LL << 13) | |
102 | #define TEA5777_W_FM_DOFF_SHIFT 13 | |
103 | ||
104 | #define TEA5777_W_FM_STEP_MASK (3LL << 1) | |
105 | #define TEA5777_W_FM_STEP_SHIFT 1 | |
106 | ||
107 | /* Write reg, AM specific bits */ | |
108 | #define TEA5777_W_AM_PLL_MASK (0x7ffLL << 34) | |
109 | #define TEA5777_W_AM_PLL_SHIFT 34 | |
110 | #define TEA5777_W_AM_AGCRF_MASK (1LL << 33) | |
111 | #define TEA5777_W_AM_AGCRF_SHIFT 33 | |
112 | #define TEA5777_W_AM_AGCIF_MASK (1LL << 32) | |
113 | #define TEA5777_W_AM_AGCIF_SHIFT 32 | |
114 | #define TEA5777_W_AM_MWLW_MASK (1LL << 31) | |
115 | #define TEA5777_W_AM_MWLW_SHIFT 31 | |
d7aab0bf HG |
116 | #define TEA5777_W_AM_LW 0LL |
117 | #define TEA5777_W_AM_MW 1LL | |
4faba767 HG |
118 | #define TEA5777_W_AM_LNA_MASK (1LL << 30) |
119 | #define TEA5777_W_AM_LNA_SHIFT 30 | |
120 | ||
121 | #define TEA5777_W_AM_PEAK_MASK (1LL << 25) | |
122 | #define TEA5777_W_AM_PEAK_SHIFT 25 | |
123 | ||
124 | #define TEA5777_W_AM_RFB_MASK (1LL << 16) | |
125 | #define TEA5777_W_AM_RFB_SHIFT 16 | |
126 | #define TEA5777_W_AM_CALLIGN_MASK (1LL << 15) | |
127 | #define TEA5777_W_AM_CALLIGN_SHIFT 15 | |
128 | #define TEA5777_W_AM_CBANK_MASK (0x7fLL << 8) | |
129 | #define TEA5777_W_AM_CBANK_SHIFT 8 | |
130 | ||
131 | #define TEA5777_W_AM_DELAY_MASK (1LL << 2) | |
132 | #define TEA5777_W_AM_DELAY_SHIFT 2 | |
133 | #define TEA5777_W_AM_STEP_MASK (1LL << 1) | |
134 | #define TEA5777_W_AM_STEP_SHIFT 1 | |
135 | ||
136 | /* Read reg, common bits */ | |
137 | #define TEA5777_R_LEVEL_MASK (0x0f << 17) | |
138 | #define TEA5777_R_LEVEL_SHIFT 17 | |
139 | #define TEA5777_R_SFOUND_MASK (0x01 << 16) | |
140 | #define TEA5777_R_SFOUND_SHIFT 16 | |
141 | #define TEA5777_R_BLIM_MASK (0x01 << 15) | |
142 | #define TEA5777_R_BLIM_SHIFT 15 | |
143 | ||
144 | /* Read reg, FM specific bits */ | |
145 | #define TEA5777_R_FM_STEREO_MASK (0x01 << 21) | |
146 | #define TEA5777_R_FM_STEREO_SHIFT 21 | |
147 | #define TEA5777_R_FM_PLL_MASK 0x1fff | |
148 | #define TEA5777_R_FM_PLL_SHIFT 0 | |
149 | ||
d7aab0bf HG |
150 | enum { BAND_FM, BAND_AM }; |
151 | ||
152 | static const struct v4l2_frequency_band bands[] = { | |
153 | { | |
154 | .type = V4L2_TUNER_RADIO, | |
155 | .index = 0, | |
156 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | | |
157 | V4L2_TUNER_CAP_FREQ_BANDS | | |
158 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | | |
159 | V4L2_TUNER_CAP_HWSEEK_PROG_LIM, | |
160 | .rangelow = 76000 * 16, | |
161 | .rangehigh = 108000 * 16, | |
162 | .modulation = V4L2_BAND_MODULATION_FM, | |
163 | }, | |
164 | { | |
165 | .type = V4L2_TUNER_RADIO, | |
166 | .index = 1, | |
167 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS | | |
168 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | | |
169 | V4L2_TUNER_CAP_HWSEEK_PROG_LIM, | |
170 | .rangelow = 530 * 16, | |
171 | .rangehigh = 1710 * 16, | |
172 | .modulation = V4L2_BAND_MODULATION_AM, | |
173 | }, | |
174 | }; | |
175 | ||
4faba767 HG |
176 | static u32 tea5777_freq_to_v4l2_freq(struct radio_tea5777 *tea, u32 freq) |
177 | { | |
d7aab0bf HG |
178 | switch (tea->band) { |
179 | case BAND_FM: | |
180 | return (freq * TEA5777_FM_FREQ_STEP + TEA5777_FM_IF) * 16; | |
181 | case BAND_AM: | |
182 | return (freq * TEA5777_AM_FREQ_STEP + TEA5777_AM_IF) * 16; | |
183 | } | |
184 | return 0; /* Never reached */ | |
4faba767 HG |
185 | } |
186 | ||
d1f280d6 | 187 | int radio_tea5777_set_freq(struct radio_tea5777 *tea) |
4faba767 | 188 | { |
4fad5c47 | 189 | u32 freq; |
4faba767 HG |
190 | int res; |
191 | ||
d7aab0bf HG |
192 | freq = clamp(tea->freq, bands[tea->band].rangelow, |
193 | bands[tea->band].rangehigh); | |
4fad5c47 | 194 | freq = (freq + 8) / 16; /* to kHz */ |
4faba767 | 195 | |
d7aab0bf HG |
196 | switch (tea->band) { |
197 | case BAND_FM: | |
198 | tea->write_reg &= ~TEA5777_W_AM_FM_MASK; | |
199 | freq = (freq - TEA5777_FM_IF) / TEA5777_FM_FREQ_STEP; | |
200 | tea->write_reg &= ~TEA5777_W_FM_PLL_MASK; | |
201 | tea->write_reg |= (u64)freq << TEA5777_W_FM_PLL_SHIFT; | |
202 | tea->write_reg &= ~TEA5777_W_FM_FREF_MASK; | |
203 | tea->write_reg |= TEA5777_W_FM_FREF_VALUE << | |
204 | TEA5777_W_FM_FREF_SHIFT; | |
205 | tea->write_reg &= ~TEA5777_W_FM_FORCEMONO_MASK; | |
206 | if (tea->audmode == V4L2_TUNER_MODE_MONO) | |
207 | tea->write_reg |= 1LL << TEA5777_W_FM_FORCEMONO_SHIFT; | |
208 | break; | |
209 | case BAND_AM: | |
210 | tea->write_reg &= ~TEA5777_W_AM_FM_MASK; | |
211 | tea->write_reg |= (1LL << TEA5777_W_AM_FM_SHIFT); | |
212 | freq = (freq - TEA5777_AM_IF) / TEA5777_AM_FREQ_STEP; | |
213 | tea->write_reg &= ~TEA5777_W_AM_PLL_MASK; | |
214 | tea->write_reg |= (u64)freq << TEA5777_W_AM_PLL_SHIFT; | |
215 | tea->write_reg &= ~TEA5777_W_AM_AGCRF_MASK; | |
216 | tea->write_reg &= ~TEA5777_W_AM_AGCRF_MASK; | |
217 | tea->write_reg &= ~TEA5777_W_AM_MWLW_MASK; | |
218 | tea->write_reg |= TEA5777_W_AM_MW << TEA5777_W_AM_MWLW_SHIFT; | |
219 | tea->write_reg &= ~TEA5777_W_AM_LNA_MASK; | |
220 | tea->write_reg |= 1LL << TEA5777_W_AM_LNA_SHIFT; | |
221 | tea->write_reg &= ~TEA5777_W_AM_PEAK_MASK; | |
222 | tea->write_reg |= 1LL << TEA5777_W_AM_PEAK_SHIFT; | |
223 | tea->write_reg &= ~TEA5777_W_AM_CALLIGN_MASK; | |
224 | break; | |
225 | } | |
4faba767 HG |
226 | |
227 | res = tea->ops->write_reg(tea, tea->write_reg); | |
228 | if (res) | |
229 | return res; | |
230 | ||
231 | tea->needs_write = false; | |
232 | tea->read_reg = -1; | |
233 | tea->freq = tea5777_freq_to_v4l2_freq(tea, freq); | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | static int radio_tea5777_update_read_reg(struct radio_tea5777 *tea, int wait) | |
239 | { | |
240 | int res; | |
241 | ||
242 | if (tea->read_reg != -1) | |
243 | return 0; | |
244 | ||
245 | if (tea->write_before_read && tea->needs_write) { | |
246 | res = radio_tea5777_set_freq(tea); | |
247 | if (res) | |
248 | return res; | |
249 | } | |
250 | ||
251 | if (wait) { | |
252 | if (schedule_timeout_interruptible(msecs_to_jiffies(wait))) | |
253 | return -ERESTARTSYS; | |
254 | } | |
255 | ||
256 | res = tea->ops->read_reg(tea, &tea->read_reg); | |
257 | if (res) | |
258 | return res; | |
259 | ||
260 | tea->needs_write = true; | |
261 | return 0; | |
262 | } | |
263 | ||
264 | /* | |
265 | * Linux Video interface | |
266 | */ | |
267 | ||
268 | static int vidioc_querycap(struct file *file, void *priv, | |
269 | struct v4l2_capability *v) | |
270 | { | |
271 | struct radio_tea5777 *tea = video_drvdata(file); | |
272 | ||
273 | strlcpy(v->driver, tea->v4l2_dev->name, sizeof(v->driver)); | |
274 | strlcpy(v->card, tea->card, sizeof(v->card)); | |
275 | strlcat(v->card, " TEA5777", sizeof(v->card)); | |
276 | strlcpy(v->bus_info, tea->bus_info, sizeof(v->bus_info)); | |
277 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; | |
278 | v->device_caps |= V4L2_CAP_HW_FREQ_SEEK; | |
279 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; | |
280 | return 0; | |
281 | } | |
282 | ||
d7aab0bf HG |
283 | static int vidioc_enum_freq_bands(struct file *file, void *priv, |
284 | struct v4l2_frequency_band *band) | |
285 | { | |
286 | struct radio_tea5777 *tea = video_drvdata(file); | |
287 | ||
288 | if (band->tuner != 0 || band->index >= ARRAY_SIZE(bands) || | |
289 | (!tea->has_am && band->index == BAND_AM)) | |
290 | return -EINVAL; | |
291 | ||
292 | *band = bands[band->index]; | |
293 | return 0; | |
294 | } | |
295 | ||
4faba767 HG |
296 | static int vidioc_g_tuner(struct file *file, void *priv, |
297 | struct v4l2_tuner *v) | |
298 | { | |
299 | struct radio_tea5777 *tea = video_drvdata(file); | |
300 | int res; | |
301 | ||
302 | if (v->index > 0) | |
303 | return -EINVAL; | |
304 | ||
305 | res = radio_tea5777_update_read_reg(tea, 0); | |
306 | if (res) | |
307 | return res; | |
308 | ||
309 | memset(v, 0, sizeof(*v)); | |
310 | if (tea->has_am) | |
311 | strlcpy(v->name, "AM/FM", sizeof(v->name)); | |
312 | else | |
313 | strlcpy(v->name, "FM", sizeof(v->name)); | |
314 | v->type = V4L2_TUNER_RADIO; | |
315 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | | |
d7aab0bf HG |
316 | V4L2_TUNER_CAP_FREQ_BANDS | |
317 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | | |
318 | V4L2_TUNER_CAP_HWSEEK_PROG_LIM; | |
319 | v->rangelow = tea->has_am ? bands[BAND_AM].rangelow : | |
320 | bands[BAND_FM].rangelow; | |
321 | v->rangehigh = bands[BAND_FM].rangehigh; | |
322 | if (tea->band == BAND_FM && | |
323 | (tea->read_reg & TEA5777_R_FM_STEREO_MASK)) | |
324 | v->rxsubchans = V4L2_TUNER_SUB_STEREO; | |
325 | else | |
326 | v->rxsubchans = V4L2_TUNER_SUB_MONO; | |
327 | v->audmode = tea->audmode; | |
4faba767 HG |
328 | /* shift - 12 to convert 4-bits (0-15) scale to 16-bits (0-65535) */ |
329 | v->signal = (tea->read_reg & TEA5777_R_LEVEL_MASK) >> | |
330 | (TEA5777_R_LEVEL_SHIFT - 12); | |
331 | ||
332 | /* Invalidate read_reg, so that next call we return up2date signal */ | |
333 | tea->read_reg = -1; | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | static int vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 339 | const struct v4l2_tuner *v) |
4faba767 HG |
340 | { |
341 | struct radio_tea5777 *tea = video_drvdata(file); | |
d7aab0bf | 342 | u32 orig_audmode = tea->audmode; |
4faba767 HG |
343 | |
344 | if (v->index) | |
345 | return -EINVAL; | |
346 | ||
d7aab0bf | 347 | tea->audmode = v->audmode; |
2f73c7c5 HV |
348 | if (tea->audmode > V4L2_TUNER_MODE_STEREO) |
349 | tea->audmode = V4L2_TUNER_MODE_STEREO; | |
d7aab0bf HG |
350 | |
351 | if (tea->audmode != orig_audmode && tea->band == BAND_FM) | |
352 | return radio_tea5777_set_freq(tea); | |
353 | ||
354 | return 0; | |
4faba767 HG |
355 | } |
356 | ||
357 | static int vidioc_g_frequency(struct file *file, void *priv, | |
358 | struct v4l2_frequency *f) | |
359 | { | |
360 | struct radio_tea5777 *tea = video_drvdata(file); | |
361 | ||
362 | if (f->tuner != 0) | |
363 | return -EINVAL; | |
364 | f->type = V4L2_TUNER_RADIO; | |
365 | f->frequency = tea->freq; | |
366 | return 0; | |
367 | } | |
368 | ||
369 | static int vidioc_s_frequency(struct file *file, void *priv, | |
b530a447 | 370 | const struct v4l2_frequency *f) |
4faba767 HG |
371 | { |
372 | struct radio_tea5777 *tea = video_drvdata(file); | |
373 | ||
374 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) | |
375 | return -EINVAL; | |
376 | ||
d7aab0bf HG |
377 | if (tea->has_am && f->frequency < (20000 * 16)) |
378 | tea->band = BAND_AM; | |
379 | else | |
380 | tea->band = BAND_FM; | |
381 | ||
4faba767 HG |
382 | tea->freq = f->frequency; |
383 | return radio_tea5777_set_freq(tea); | |
384 | } | |
385 | ||
386 | static int vidioc_s_hw_freq_seek(struct file *file, void *fh, | |
ec6f4328 | 387 | const struct v4l2_hw_freq_seek *a) |
4faba767 HG |
388 | { |
389 | struct radio_tea5777 *tea = video_drvdata(file); | |
4faba767 | 390 | unsigned long timeout; |
ec6f4328 HV |
391 | u32 rangelow = a->rangelow; |
392 | u32 rangehigh = a->rangehigh; | |
d7aab0bf HG |
393 | int i, res, spacing; |
394 | u32 orig_freq; | |
4faba767 HG |
395 | |
396 | if (a->tuner || a->wrap_around) | |
397 | return -EINVAL; | |
398 | ||
617ade61 HV |
399 | if (file->f_flags & O_NONBLOCK) |
400 | return -EWOULDBLOCK; | |
401 | ||
ec6f4328 | 402 | if (rangelow || rangehigh) { |
d7aab0bf HG |
403 | for (i = 0; i < ARRAY_SIZE(bands); i++) { |
404 | if (i == BAND_AM && !tea->has_am) | |
405 | continue; | |
ec6f4328 HV |
406 | if (bands[i].rangelow >= rangelow && |
407 | bands[i].rangehigh <= rangehigh) | |
d7aab0bf HG |
408 | break; |
409 | } | |
410 | if (i == ARRAY_SIZE(bands)) | |
411 | return -EINVAL; /* No matching band found */ | |
412 | ||
413 | tea->band = i; | |
ec6f4328 HV |
414 | if (tea->freq < rangelow || tea->freq > rangehigh) { |
415 | tea->freq = clamp(tea->freq, rangelow, | |
416 | rangehigh); | |
d7aab0bf HG |
417 | res = radio_tea5777_set_freq(tea); |
418 | if (res) | |
419 | return res; | |
420 | } | |
421 | } else { | |
ec6f4328 HV |
422 | rangelow = bands[tea->band].rangelow; |
423 | rangehigh = bands[tea->band].rangehigh; | |
d7aab0bf HG |
424 | } |
425 | ||
426 | spacing = (tea->band == BAND_AM) ? (5 * 16) : (200 * 16); /* kHz */ | |
427 | orig_freq = tea->freq; | |
428 | ||
4faba767 | 429 | tea->write_reg |= TEA5777_W_PROGBLIM_MASK; |
ec6f4328 | 430 | if (tea->seek_rangelow != rangelow) { |
4faba767 | 431 | tea->write_reg &= ~TEA5777_W_UPDWN_MASK; |
ec6f4328 | 432 | tea->freq = rangelow; |
4faba767 HG |
433 | res = radio_tea5777_set_freq(tea); |
434 | if (res) | |
435 | goto leave; | |
ec6f4328 | 436 | tea->seek_rangelow = rangelow; |
4faba767 | 437 | } |
ec6f4328 | 438 | if (tea->seek_rangehigh != rangehigh) { |
4faba767 | 439 | tea->write_reg |= TEA5777_W_UPDWN_MASK; |
ec6f4328 | 440 | tea->freq = rangehigh; |
4faba767 HG |
441 | res = radio_tea5777_set_freq(tea); |
442 | if (res) | |
443 | goto leave; | |
ec6f4328 | 444 | tea->seek_rangehigh = rangehigh; |
4faba767 HG |
445 | } |
446 | tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; | |
447 | ||
448 | tea->write_reg |= TEA5777_W_SEARCH_MASK; | |
449 | if (a->seek_upward) { | |
450 | tea->write_reg |= TEA5777_W_UPDWN_MASK; | |
451 | tea->freq = orig_freq + spacing; | |
452 | } else { | |
453 | tea->write_reg &= ~TEA5777_W_UPDWN_MASK; | |
454 | tea->freq = orig_freq - spacing; | |
455 | } | |
456 | res = radio_tea5777_set_freq(tea); | |
457 | if (res) | |
458 | goto leave; | |
459 | ||
460 | timeout = jiffies + msecs_to_jiffies(5000); | |
461 | for (;;) { | |
462 | if (time_after(jiffies, timeout)) { | |
463 | res = -ENODATA; | |
464 | break; | |
465 | } | |
466 | ||
467 | res = radio_tea5777_update_read_reg(tea, 100); | |
468 | if (res) | |
469 | break; | |
470 | ||
471 | /* | |
472 | * Note we use tea->freq to track how far we've searched sofar | |
473 | * this is necessary to ensure we continue seeking at the right | |
474 | * point, in the write_before_read case. | |
475 | */ | |
476 | tea->freq = (tea->read_reg & TEA5777_R_FM_PLL_MASK); | |
477 | tea->freq = tea5777_freq_to_v4l2_freq(tea, tea->freq); | |
478 | ||
479 | if ((tea->read_reg & TEA5777_R_SFOUND_MASK)) { | |
480 | tea->write_reg &= ~TEA5777_W_SEARCH_MASK; | |
481 | return 0; | |
482 | } | |
483 | ||
484 | if (tea->read_reg & TEA5777_R_BLIM_MASK) { | |
485 | res = -ENODATA; | |
486 | break; | |
487 | } | |
488 | ||
489 | /* Force read_reg update */ | |
490 | tea->read_reg = -1; | |
491 | } | |
492 | leave: | |
493 | tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; | |
494 | tea->write_reg &= ~TEA5777_W_SEARCH_MASK; | |
495 | tea->freq = orig_freq; | |
496 | radio_tea5777_set_freq(tea); | |
497 | return res; | |
498 | } | |
499 | ||
500 | static int tea575x_s_ctrl(struct v4l2_ctrl *c) | |
501 | { | |
502 | struct radio_tea5777 *tea = | |
503 | container_of(c->handler, struct radio_tea5777, ctrl_handler); | |
504 | ||
505 | switch (c->id) { | |
506 | case V4L2_CID_AUDIO_MUTE: | |
507 | if (c->val) | |
508 | tea->write_reg |= TEA5777_W_MUTE_MASK; | |
509 | else | |
510 | tea->write_reg &= ~TEA5777_W_MUTE_MASK; | |
511 | ||
512 | return radio_tea5777_set_freq(tea); | |
513 | } | |
514 | ||
515 | return -EINVAL; | |
516 | } | |
517 | ||
518 | static const struct v4l2_file_operations tea575x_fops = { | |
519 | .unlocked_ioctl = video_ioctl2, | |
520 | .open = v4l2_fh_open, | |
521 | .release = v4l2_fh_release, | |
522 | .poll = v4l2_ctrl_poll, | |
523 | }; | |
524 | ||
525 | static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { | |
526 | .vidioc_querycap = vidioc_querycap, | |
527 | .vidioc_g_tuner = vidioc_g_tuner, | |
528 | .vidioc_s_tuner = vidioc_s_tuner, | |
529 | .vidioc_g_frequency = vidioc_g_frequency, | |
530 | .vidioc_s_frequency = vidioc_s_frequency, | |
531 | .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, | |
d7aab0bf | 532 | .vidioc_enum_freq_bands = vidioc_enum_freq_bands, |
4faba767 HG |
533 | .vidioc_log_status = v4l2_ctrl_log_status, |
534 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
535 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
536 | }; | |
537 | ||
538 | static const struct video_device tea575x_radio = { | |
539 | .ioctl_ops = &tea575x_ioctl_ops, | |
540 | .release = video_device_release_empty, | |
541 | }; | |
542 | ||
543 | static const struct v4l2_ctrl_ops tea575x_ctrl_ops = { | |
544 | .s_ctrl = tea575x_s_ctrl, | |
545 | }; | |
546 | ||
547 | int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner) | |
548 | { | |
549 | int res; | |
550 | ||
551 | tea->write_reg = (1LL << TEA5777_W_IFCE_SHIFT) | | |
552 | (1LL << TEA5777_W_IFW_SHIFT) | | |
553 | (1LL << TEA5777_W_INTEXT_SHIFT) | | |
554 | (1LL << TEA5777_W_CHP0_SHIFT) | | |
d7aab0bf | 555 | (1LL << TEA5777_W_SLEV_SHIFT); |
4faba767 | 556 | tea->freq = 90500 * 16; /* 90.5Mhz default */ |
d7aab0bf | 557 | tea->audmode = V4L2_TUNER_MODE_STEREO; |
4faba767 HG |
558 | res = radio_tea5777_set_freq(tea); |
559 | if (res) { | |
560 | v4l2_err(tea->v4l2_dev, "can't set initial freq (%d)\n", res); | |
561 | return res; | |
562 | } | |
563 | ||
564 | tea->vd = tea575x_radio; | |
565 | video_set_drvdata(&tea->vd, tea); | |
566 | mutex_init(&tea->mutex); | |
567 | strlcpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name)); | |
568 | tea->vd.lock = &tea->mutex; | |
569 | tea->vd.v4l2_dev = tea->v4l2_dev; | |
570 | tea->fops = tea575x_fops; | |
571 | tea->fops.owner = owner; | |
572 | tea->vd.fops = &tea->fops; | |
4faba767 HG |
573 | |
574 | tea->vd.ctrl_handler = &tea->ctrl_handler; | |
575 | v4l2_ctrl_handler_init(&tea->ctrl_handler, 1); | |
576 | v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, | |
577 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
578 | res = tea->ctrl_handler.error; | |
579 | if (res) { | |
580 | v4l2_err(tea->v4l2_dev, "can't initialize controls\n"); | |
581 | v4l2_ctrl_handler_free(&tea->ctrl_handler); | |
582 | return res; | |
583 | } | |
584 | v4l2_ctrl_handler_setup(&tea->ctrl_handler); | |
585 | ||
586 | res = video_register_device(&tea->vd, VFL_TYPE_RADIO, -1); | |
587 | if (res) { | |
588 | v4l2_err(tea->v4l2_dev, "can't register video device!\n"); | |
589 | v4l2_ctrl_handler_free(tea->vd.ctrl_handler); | |
590 | return res; | |
591 | } | |
592 | ||
593 | return 0; | |
594 | } | |
595 | EXPORT_SYMBOL_GPL(radio_tea5777_init); | |
596 | ||
597 | void radio_tea5777_exit(struct radio_tea5777 *tea) | |
598 | { | |
599 | video_unregister_device(&tea->vd); | |
600 | v4l2_ctrl_handler_free(tea->vd.ctrl_handler); | |
601 | } | |
602 | EXPORT_SYMBOL_GPL(radio_tea5777_exit); |