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 38MODULE_AUTHOR("Hans de Goede <perex@perex.cz>"); 39MODULE_DESCRIPTION("Routines for control of TEA5777 Philips AM/FM radio tuner chips"); 40MODULE_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 150enum { BAND_FM, BAND_AM }; 151 152static 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 176static 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 187int 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 238static 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 268static 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 283static 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 296static 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 338static int vidioc_s_tuner(struct file *file, void *priv, 339 const 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 tea->audmode = v->audmode; 348 if (tea->audmode > V4L2_TUNER_MODE_STEREO) 349 tea->audmode = V4L2_TUNER_MODE_STEREO; 350 351 if (tea->audmode != orig_audmode && tea->band == BAND_FM) 352 return radio_tea5777_set_freq(tea); 353 354 return 0; 355} 356 357static 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 369static int vidioc_s_frequency(struct file *file, void *priv, 370 const struct v4l2_frequency *f) 371{ 372 struct radio_tea5777 *tea = video_drvdata(file); 373 374 if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) 375 return -EINVAL; 376 377 if (tea->has_am && f->frequency < (20000 * 16)) 378 tea->band = BAND_AM; 379 else 380 tea->band = BAND_FM; 381 382 tea->freq = f->frequency; 383 return radio_tea5777_set_freq(tea); 384} 385 386static int vidioc_s_hw_freq_seek(struct file *file, void *fh, 387 const struct v4l2_hw_freq_seek *a) 388{ 389 struct radio_tea5777 *tea = video_drvdata(file); 390 unsigned long timeout; 391 u32 rangelow = a->rangelow; 392 u32 rangehigh = a->rangehigh; 393 int i, res, spacing; 394 u32 orig_freq; 395 396 if (a->tuner || a->wrap_around) 397 return -EINVAL; 398 399 if (file->f_flags & O_NONBLOCK) 400 return -EWOULDBLOCK; 401 402 if (rangelow || rangehigh) { 403 for (i = 0; i < ARRAY_SIZE(bands); i++) { 404 if (i == BAND_AM && !tea->has_am) 405 continue; 406 if (bands[i].rangelow >= rangelow && 407 bands[i].rangehigh <= rangehigh) 408 break; 409 } 410 if (i == ARRAY_SIZE(bands)) 411 return -EINVAL; /* No matching band found */ 412 413 tea->band = i; 414 if (tea->freq < rangelow || tea->freq > rangehigh) { 415 tea->freq = clamp(tea->freq, rangelow, 416 rangehigh); 417 res = radio_tea5777_set_freq(tea); 418 if (res) 419 return res; 420 } 421 } else { 422 rangelow = bands[tea->band].rangelow; 423 rangehigh = bands[tea->band].rangehigh; 424 } 425 426 spacing = (tea->band == BAND_AM) ? (5 * 16) : (200 * 16); /* kHz */ 427 orig_freq = tea->freq; 428 429 tea->write_reg |= TEA5777_W_PROGBLIM_MASK; 430 if (tea->seek_rangelow != rangelow) { 431 tea->write_reg &= ~TEA5777_W_UPDWN_MASK; 432 tea->freq = rangelow; 433 res = radio_tea5777_set_freq(tea); 434 if (res) 435 goto leave; 436 tea->seek_rangelow = rangelow; 437 } 438 if (tea->seek_rangehigh != rangehigh) { 439 tea->write_reg |= TEA5777_W_UPDWN_MASK; 440 tea->freq = rangehigh; 441 res = radio_tea5777_set_freq(tea); 442 if (res) 443 goto leave; 444 tea->seek_rangehigh = rangehigh; 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 } 492leave: 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 500static 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 518static 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 525static 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, 532 .vidioc_enum_freq_bands = vidioc_enum_freq_bands, 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 538static const struct video_device tea575x_radio = { 539 .ioctl_ops = &tea575x_ioctl_ops, 540 .release = video_device_release_empty, 541}; 542 543static const struct v4l2_ctrl_ops tea575x_ctrl_ops = { 544 .s_ctrl = tea575x_s_ctrl, 545}; 546 547int 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) | 555 (1LL << TEA5777_W_SLEV_SHIFT); 556 tea->freq = 90500 * 16; /* 90.5Mhz default */ 557 tea->audmode = V4L2_TUNER_MODE_STEREO; 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; 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} 595EXPORT_SYMBOL_GPL(radio_tea5777_init); 596 597void radio_tea5777_exit(struct radio_tea5777 *tea) 598{ 599 video_unregister_device(&tea->vd); 600 v4l2_ctrl_handler_free(tea->vd.ctrl_handler); 601} 602EXPORT_SYMBOL_GPL(radio_tea5777_exit); 603