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 42 #define TEA5777_FM_IF 150 /* kHz */ 43 #define TEA5777_FM_FREQ_STEP 50 /* kHz */ 44 45 #define TEA5777_AM_IF 21 /* kHz */ 46 #define TEA5777_AM_FREQ_STEP 1 /* kHz */ 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 95 #define TEA5777_W_FM_FREF_VALUE 0LL /* 50k steps, 150k IF */ 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 31 116 #define TEA5777_W_AM_LW 0LL 117 #define TEA5777_W_AM_MW 1LL 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 0 149 150 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 }; 175 176 static u32 tea5777_freq_to_v4l2_freq(struct radio_tea5777 *tea, u32 freq) 177 { 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 */ 185 } 186 187 int radio_tea5777_set_freq(struct radio_tea5777 *tea) 188 { 189 u32 freq; 190 int res; 191 192 freq = clamp(tea->freq, bands[tea->band].rangelow, 193 bands[tea->band].rangehigh); 194 freq = (freq + 8) / 16; /* to kHz */ 195 196 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 } 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 } 282 283 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 } 295 296 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 | 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; 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, 339 struct v4l2_tuner *v) 340 { 341 struct radio_tea5777 *tea = video_drvdata(file); 342 u32 orig_audmode = tea->audmode; 343 344 if (v->index) 345 return -EINVAL; 346 347 if (v->audmode > V4L2_TUNER_MODE_STEREO) 348 v->audmode = V4L2_TUNER_MODE_STEREO; 349 350 tea->audmode = v->audmode; 351 352 if (tea->audmode != orig_audmode && tea->band == BAND_FM) 353 return radio_tea5777_set_freq(tea); 354 355 return 0; 356 } 357 358 static int vidioc_g_frequency(struct file *file, void *priv, 359 struct v4l2_frequency *f) 360 { 361 struct radio_tea5777 *tea = video_drvdata(file); 362 363 if (f->tuner != 0) 364 return -EINVAL; 365 f->type = V4L2_TUNER_RADIO; 366 f->frequency = tea->freq; 367 return 0; 368 } 369 370 static int vidioc_s_frequency(struct file *file, void *priv, 371 struct v4l2_frequency *f) 372 { 373 struct radio_tea5777 *tea = video_drvdata(file); 374 375 if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) 376 return -EINVAL; 377 378 if (tea->has_am && f->frequency < (20000 * 16)) 379 tea->band = BAND_AM; 380 else 381 tea->band = BAND_FM; 382 383 tea->freq = f->frequency; 384 return radio_tea5777_set_freq(tea); 385 } 386 387 static int vidioc_s_hw_freq_seek(struct file *file, void *fh, 388 const struct v4l2_hw_freq_seek *a) 389 { 390 struct radio_tea5777 *tea = video_drvdata(file); 391 unsigned long timeout; 392 u32 rangelow = a->rangelow; 393 u32 rangehigh = a->rangehigh; 394 int i, res, spacing; 395 u32 orig_freq; 396 397 if (a->tuner || a->wrap_around) 398 return -EINVAL; 399 400 if (file->f_flags & O_NONBLOCK) 401 return -EWOULDBLOCK; 402 403 if (rangelow || rangehigh) { 404 for (i = 0; i < ARRAY_SIZE(bands); i++) { 405 if (i == BAND_AM && !tea->has_am) 406 continue; 407 if (bands[i].rangelow >= rangelow && 408 bands[i].rangehigh <= rangehigh) 409 break; 410 } 411 if (i == ARRAY_SIZE(bands)) 412 return -EINVAL; /* No matching band found */ 413 414 tea->band = i; 415 if (tea->freq < rangelow || tea->freq > rangehigh) { 416 tea->freq = clamp(tea->freq, rangelow, 417 rangehigh); 418 res = radio_tea5777_set_freq(tea); 419 if (res) 420 return res; 421 } 422 } else { 423 rangelow = bands[tea->band].rangelow; 424 rangehigh = bands[tea->band].rangehigh; 425 } 426 427 spacing = (tea->band == BAND_AM) ? (5 * 16) : (200 * 16); /* kHz */ 428 orig_freq = tea->freq; 429 430 tea->write_reg |= TEA5777_W_PROGBLIM_MASK; 431 if (tea->seek_rangelow != rangelow) { 432 tea->write_reg &= ~TEA5777_W_UPDWN_MASK; 433 tea->freq = rangelow; 434 res = radio_tea5777_set_freq(tea); 435 if (res) 436 goto leave; 437 tea->seek_rangelow = rangelow; 438 } 439 if (tea->seek_rangehigh != rangehigh) { 440 tea->write_reg |= TEA5777_W_UPDWN_MASK; 441 tea->freq = rangehigh; 442 res = radio_tea5777_set_freq(tea); 443 if (res) 444 goto leave; 445 tea->seek_rangehigh = rangehigh; 446 } 447 tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; 448 449 tea->write_reg |= TEA5777_W_SEARCH_MASK; 450 if (a->seek_upward) { 451 tea->write_reg |= TEA5777_W_UPDWN_MASK; 452 tea->freq = orig_freq + spacing; 453 } else { 454 tea->write_reg &= ~TEA5777_W_UPDWN_MASK; 455 tea->freq = orig_freq - spacing; 456 } 457 res = radio_tea5777_set_freq(tea); 458 if (res) 459 goto leave; 460 461 timeout = jiffies + msecs_to_jiffies(5000); 462 for (;;) { 463 if (time_after(jiffies, timeout)) { 464 res = -ENODATA; 465 break; 466 } 467 468 res = radio_tea5777_update_read_reg(tea, 100); 469 if (res) 470 break; 471 472 /* 473 * Note we use tea->freq to track how far we've searched sofar 474 * this is necessary to ensure we continue seeking at the right 475 * point, in the write_before_read case. 476 */ 477 tea->freq = (tea->read_reg & TEA5777_R_FM_PLL_MASK); 478 tea->freq = tea5777_freq_to_v4l2_freq(tea, tea->freq); 479 480 if ((tea->read_reg & TEA5777_R_SFOUND_MASK)) { 481 tea->write_reg &= ~TEA5777_W_SEARCH_MASK; 482 return 0; 483 } 484 485 if (tea->read_reg & TEA5777_R_BLIM_MASK) { 486 res = -ENODATA; 487 break; 488 } 489 490 /* Force read_reg update */ 491 tea->read_reg = -1; 492 } 493 leave: 494 tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; 495 tea->write_reg &= ~TEA5777_W_SEARCH_MASK; 496 tea->freq = orig_freq; 497 radio_tea5777_set_freq(tea); 498 return res; 499 } 500 501 static int tea575x_s_ctrl(struct v4l2_ctrl *c) 502 { 503 struct radio_tea5777 *tea = 504 container_of(c->handler, struct radio_tea5777, ctrl_handler); 505 506 switch (c->id) { 507 case V4L2_CID_AUDIO_MUTE: 508 if (c->val) 509 tea->write_reg |= TEA5777_W_MUTE_MASK; 510 else 511 tea->write_reg &= ~TEA5777_W_MUTE_MASK; 512 513 return radio_tea5777_set_freq(tea); 514 } 515 516 return -EINVAL; 517 } 518 519 static const struct v4l2_file_operations tea575x_fops = { 520 .unlocked_ioctl = video_ioctl2, 521 .open = v4l2_fh_open, 522 .release = v4l2_fh_release, 523 .poll = v4l2_ctrl_poll, 524 }; 525 526 static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { 527 .vidioc_querycap = vidioc_querycap, 528 .vidioc_g_tuner = vidioc_g_tuner, 529 .vidioc_s_tuner = vidioc_s_tuner, 530 .vidioc_g_frequency = vidioc_g_frequency, 531 .vidioc_s_frequency = vidioc_s_frequency, 532 .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, 533 .vidioc_enum_freq_bands = vidioc_enum_freq_bands, 534 .vidioc_log_status = v4l2_ctrl_log_status, 535 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 536 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 537 }; 538 539 static const struct video_device tea575x_radio = { 540 .ioctl_ops = &tea575x_ioctl_ops, 541 .release = video_device_release_empty, 542 }; 543 544 static const struct v4l2_ctrl_ops tea575x_ctrl_ops = { 545 .s_ctrl = tea575x_s_ctrl, 546 }; 547 548 int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner) 549 { 550 int res; 551 552 tea->write_reg = (1LL << TEA5777_W_IFCE_SHIFT) | 553 (1LL << TEA5777_W_IFW_SHIFT) | 554 (1LL << TEA5777_W_INTEXT_SHIFT) | 555 (1LL << TEA5777_W_CHP0_SHIFT) | 556 (1LL << TEA5777_W_SLEV_SHIFT); 557 tea->freq = 90500 * 16; /* 90.5Mhz default */ 558 tea->audmode = V4L2_TUNER_MODE_STEREO; 559 res = radio_tea5777_set_freq(tea); 560 if (res) { 561 v4l2_err(tea->v4l2_dev, "can't set initial freq (%d)\n", res); 562 return res; 563 } 564 565 tea->vd = tea575x_radio; 566 video_set_drvdata(&tea->vd, tea); 567 mutex_init(&tea->mutex); 568 strlcpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name)); 569 tea->vd.lock = &tea->mutex; 570 tea->vd.v4l2_dev = tea->v4l2_dev; 571 tea->fops = tea575x_fops; 572 tea->fops.owner = owner; 573 tea->vd.fops = &tea->fops; 574 set_bit(V4L2_FL_USE_FH_PRIO, &tea->vd.flags); 575 576 tea->vd.ctrl_handler = &tea->ctrl_handler; 577 v4l2_ctrl_handler_init(&tea->ctrl_handler, 1); 578 v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, 579 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); 580 res = tea->ctrl_handler.error; 581 if (res) { 582 v4l2_err(tea->v4l2_dev, "can't initialize controls\n"); 583 v4l2_ctrl_handler_free(&tea->ctrl_handler); 584 return res; 585 } 586 v4l2_ctrl_handler_setup(&tea->ctrl_handler); 587 588 res = video_register_device(&tea->vd, VFL_TYPE_RADIO, -1); 589 if (res) { 590 v4l2_err(tea->v4l2_dev, "can't register video device!\n"); 591 v4l2_ctrl_handler_free(tea->vd.ctrl_handler); 592 return res; 593 } 594 595 return 0; 596 } 597 EXPORT_SYMBOL_GPL(radio_tea5777_init); 598 599 void radio_tea5777_exit(struct radio_tea5777 *tea) 600 { 601 video_unregister_device(&tea->vd); 602 v4l2_ctrl_handler_free(tea->vd.ctrl_handler); 603 } 604 EXPORT_SYMBOL_GPL(radio_tea5777_exit); 605