Hans de Goede | 4faba76 | 2012-06-23 04:39:58 -0300 | [diff] [blame^] | 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 | /* Fixed FM only band for now, will implement multi-band support when the |
| 43 | VIDIOC_ENUM_FREQ_BANDS API is upstream */ |
| 44 | #define TEA5777_FM_RANGELOW (76000 * 16) |
| 45 | #define TEA5777_FM_RANGEHIGH (108000 * 16) |
| 46 | |
| 47 | #define TEA5777_FM_IF 150 /* kHz */ |
| 48 | #define TEA5777_FM_FREQ_STEP 50 /* kHz */ |
| 49 | |
| 50 | /* Write reg, common bits */ |
| 51 | #define TEA5777_W_MUTE_MASK (1LL << 47) |
| 52 | #define TEA5777_W_MUTE_SHIFT 47 |
| 53 | #define TEA5777_W_AM_FM_MASK (1LL << 46) |
| 54 | #define TEA5777_W_AM_FM_SHIFT 46 |
| 55 | #define TEA5777_W_STB_MASK (1LL << 45) |
| 56 | #define TEA5777_W_STB_SHIFT 45 |
| 57 | |
| 58 | #define TEA5777_W_IFCE_MASK (1LL << 29) |
| 59 | #define TEA5777_W_IFCE_SHIFT 29 |
| 60 | #define TEA5777_W_IFW_MASK (1LL << 28) |
| 61 | #define TEA5777_W_IFW_SHIFT 28 |
| 62 | #define TEA5777_W_HILO_MASK (1LL << 27) |
| 63 | #define TEA5777_W_HILO_SHIFT 27 |
| 64 | #define TEA5777_W_DBUS_MASK (1LL << 26) |
| 65 | #define TEA5777_W_DBUS_SHIFT 26 |
| 66 | |
| 67 | #define TEA5777_W_INTEXT_MASK (1LL << 24) |
| 68 | #define TEA5777_W_INTEXT_SHIFT 24 |
| 69 | #define TEA5777_W_P1_MASK (1LL << 23) |
| 70 | #define TEA5777_W_P1_SHIFT 23 |
| 71 | #define TEA5777_W_P0_MASK (1LL << 22) |
| 72 | #define TEA5777_W_P0_SHIFT 22 |
| 73 | #define TEA5777_W_PEN1_MASK (1LL << 21) |
| 74 | #define TEA5777_W_PEN1_SHIFT 21 |
| 75 | #define TEA5777_W_PEN0_MASK (1LL << 20) |
| 76 | #define TEA5777_W_PEN0_SHIFT 20 |
| 77 | |
| 78 | #define TEA5777_W_CHP0_MASK (1LL << 18) |
| 79 | #define TEA5777_W_CHP0_SHIFT 18 |
| 80 | #define TEA5777_W_DEEM_MASK (1LL << 17) |
| 81 | #define TEA5777_W_DEEM_SHIFT 17 |
| 82 | |
| 83 | #define TEA5777_W_SEARCH_MASK (1LL << 7) |
| 84 | #define TEA5777_W_SEARCH_SHIFT 7 |
| 85 | #define TEA5777_W_PROGBLIM_MASK (1LL << 6) |
| 86 | #define TEA5777_W_PROGBLIM_SHIFT 6 |
| 87 | #define TEA5777_W_UPDWN_MASK (1LL << 5) |
| 88 | #define TEA5777_W_UPDWN_SHIFT 5 |
| 89 | #define TEA5777_W_SLEV_MASK (3LL << 3) |
| 90 | #define TEA5777_W_SLEV_SHIFT 3 |
| 91 | |
| 92 | /* Write reg, FM specific bits */ |
| 93 | #define TEA5777_W_FM_PLL_MASK (0x1fffLL << 32) |
| 94 | #define TEA5777_W_FM_PLL_SHIFT 32 |
| 95 | #define TEA5777_W_FM_FREF_MASK (0x03LL << 30) |
| 96 | #define TEA5777_W_FM_FREF_SHIFT 30 |
| 97 | #define TEA5777_W_FM_FREF_VALUE 0 /* 50 kHz tune steps, 150 kHz IF */ |
| 98 | |
| 99 | #define TEA5777_W_FM_FORCEMONO_MASK (1LL << 15) |
| 100 | #define TEA5777_W_FM_FORCEMONO_SHIFT 15 |
| 101 | #define TEA5777_W_FM_SDSOFF_MASK (1LL << 14) |
| 102 | #define TEA5777_W_FM_SDSOFF_SHIFT 14 |
| 103 | #define TEA5777_W_FM_DOFF_MASK (1LL << 13) |
| 104 | #define TEA5777_W_FM_DOFF_SHIFT 13 |
| 105 | |
| 106 | #define TEA5777_W_FM_STEP_MASK (3LL << 1) |
| 107 | #define TEA5777_W_FM_STEP_SHIFT 1 |
| 108 | |
| 109 | /* Write reg, AM specific bits */ |
| 110 | #define TEA5777_W_AM_PLL_MASK (0x7ffLL << 34) |
| 111 | #define TEA5777_W_AM_PLL_SHIFT 34 |
| 112 | #define TEA5777_W_AM_AGCRF_MASK (1LL << 33) |
| 113 | #define TEA5777_W_AM_AGCRF_SHIFT 33 |
| 114 | #define TEA5777_W_AM_AGCIF_MASK (1LL << 32) |
| 115 | #define TEA5777_W_AM_AGCIF_SHIFT 32 |
| 116 | #define TEA5777_W_AM_MWLW_MASK (1LL << 31) |
| 117 | #define TEA5777_W_AM_MWLW_SHIFT 31 |
| 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 | static u32 tea5777_freq_to_v4l2_freq(struct radio_tea5777 *tea, u32 freq) |
| 151 | { |
| 152 | return (freq * TEA5777_FM_FREQ_STEP + TEA5777_FM_IF) * 16; |
| 153 | } |
| 154 | |
| 155 | static int radio_tea5777_set_freq(struct radio_tea5777 *tea) |
| 156 | { |
| 157 | u64 freq; |
| 158 | int res; |
| 159 | |
| 160 | freq = clamp_t(u32, tea->freq, |
| 161 | TEA5777_FM_RANGELOW, TEA5777_FM_RANGEHIGH); |
| 162 | freq = (freq + 8) / 16; /* to kHz */ |
| 163 | |
| 164 | freq = (freq - TEA5777_FM_IF) / TEA5777_FM_FREQ_STEP; |
| 165 | |
| 166 | tea->write_reg &= ~(TEA5777_W_FM_PLL_MASK | TEA5777_W_FM_FREF_MASK); |
| 167 | tea->write_reg |= freq << TEA5777_W_FM_PLL_SHIFT; |
| 168 | tea->write_reg |= TEA5777_W_FM_FREF_VALUE << TEA5777_W_FM_FREF_SHIFT; |
| 169 | |
| 170 | res = tea->ops->write_reg(tea, tea->write_reg); |
| 171 | if (res) |
| 172 | return res; |
| 173 | |
| 174 | tea->needs_write = false; |
| 175 | tea->read_reg = -1; |
| 176 | tea->freq = tea5777_freq_to_v4l2_freq(tea, freq); |
| 177 | |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | static int radio_tea5777_update_read_reg(struct radio_tea5777 *tea, int wait) |
| 182 | { |
| 183 | int res; |
| 184 | |
| 185 | if (tea->read_reg != -1) |
| 186 | return 0; |
| 187 | |
| 188 | if (tea->write_before_read && tea->needs_write) { |
| 189 | res = radio_tea5777_set_freq(tea); |
| 190 | if (res) |
| 191 | return res; |
| 192 | } |
| 193 | |
| 194 | if (wait) { |
| 195 | if (schedule_timeout_interruptible(msecs_to_jiffies(wait))) |
| 196 | return -ERESTARTSYS; |
| 197 | } |
| 198 | |
| 199 | res = tea->ops->read_reg(tea, &tea->read_reg); |
| 200 | if (res) |
| 201 | return res; |
| 202 | |
| 203 | tea->needs_write = true; |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | /* |
| 208 | * Linux Video interface |
| 209 | */ |
| 210 | |
| 211 | static int vidioc_querycap(struct file *file, void *priv, |
| 212 | struct v4l2_capability *v) |
| 213 | { |
| 214 | struct radio_tea5777 *tea = video_drvdata(file); |
| 215 | |
| 216 | strlcpy(v->driver, tea->v4l2_dev->name, sizeof(v->driver)); |
| 217 | strlcpy(v->card, tea->card, sizeof(v->card)); |
| 218 | strlcat(v->card, " TEA5777", sizeof(v->card)); |
| 219 | strlcpy(v->bus_info, tea->bus_info, sizeof(v->bus_info)); |
| 220 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
| 221 | v->device_caps |= V4L2_CAP_HW_FREQ_SEEK; |
| 222 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | static int vidioc_g_tuner(struct file *file, void *priv, |
| 227 | struct v4l2_tuner *v) |
| 228 | { |
| 229 | struct radio_tea5777 *tea = video_drvdata(file); |
| 230 | int res; |
| 231 | |
| 232 | if (v->index > 0) |
| 233 | return -EINVAL; |
| 234 | |
| 235 | res = radio_tea5777_update_read_reg(tea, 0); |
| 236 | if (res) |
| 237 | return res; |
| 238 | |
| 239 | memset(v, 0, sizeof(*v)); |
| 240 | if (tea->has_am) |
| 241 | strlcpy(v->name, "AM/FM", sizeof(v->name)); |
| 242 | else |
| 243 | strlcpy(v->name, "FM", sizeof(v->name)); |
| 244 | v->type = V4L2_TUNER_RADIO; |
| 245 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
| 246 | V4L2_TUNER_CAP_HWSEEK_BOUNDED; |
| 247 | v->rangelow = TEA5777_FM_RANGELOW; |
| 248 | v->rangehigh = TEA5777_FM_RANGEHIGH; |
| 249 | v->rxsubchans = (tea->read_reg & TEA5777_R_FM_STEREO_MASK) ? |
| 250 | V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO; |
| 251 | v->audmode = (tea->write_reg & TEA5777_W_FM_FORCEMONO_MASK) ? |
| 252 | V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO; |
| 253 | /* shift - 12 to convert 4-bits (0-15) scale to 16-bits (0-65535) */ |
| 254 | v->signal = (tea->read_reg & TEA5777_R_LEVEL_MASK) >> |
| 255 | (TEA5777_R_LEVEL_SHIFT - 12); |
| 256 | |
| 257 | /* Invalidate read_reg, so that next call we return up2date signal */ |
| 258 | tea->read_reg = -1; |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | static int vidioc_s_tuner(struct file *file, void *priv, |
| 264 | struct v4l2_tuner *v) |
| 265 | { |
| 266 | struct radio_tea5777 *tea = video_drvdata(file); |
| 267 | |
| 268 | if (v->index) |
| 269 | return -EINVAL; |
| 270 | |
| 271 | if (v->audmode == V4L2_TUNER_MODE_MONO) |
| 272 | tea->write_reg |= TEA5777_W_FM_FORCEMONO_MASK; |
| 273 | else |
| 274 | tea->write_reg &= ~TEA5777_W_FM_FORCEMONO_MASK; |
| 275 | |
| 276 | return radio_tea5777_set_freq(tea); |
| 277 | } |
| 278 | |
| 279 | static int vidioc_g_frequency(struct file *file, void *priv, |
| 280 | struct v4l2_frequency *f) |
| 281 | { |
| 282 | struct radio_tea5777 *tea = video_drvdata(file); |
| 283 | |
| 284 | if (f->tuner != 0) |
| 285 | return -EINVAL; |
| 286 | f->type = V4L2_TUNER_RADIO; |
| 287 | f->frequency = tea->freq; |
| 288 | return 0; |
| 289 | } |
| 290 | |
| 291 | static int vidioc_s_frequency(struct file *file, void *priv, |
| 292 | struct v4l2_frequency *f) |
| 293 | { |
| 294 | struct radio_tea5777 *tea = video_drvdata(file); |
| 295 | |
| 296 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
| 297 | return -EINVAL; |
| 298 | |
| 299 | tea->freq = f->frequency; |
| 300 | return radio_tea5777_set_freq(tea); |
| 301 | } |
| 302 | |
| 303 | static int vidioc_s_hw_freq_seek(struct file *file, void *fh, |
| 304 | struct v4l2_hw_freq_seek *a) |
| 305 | { |
| 306 | struct radio_tea5777 *tea = video_drvdata(file); |
| 307 | u32 orig_freq = tea->freq; |
| 308 | unsigned long timeout; |
| 309 | int res, spacing = 200 * 16; /* 200 kHz */ |
| 310 | /* These are fixed *for now* */ |
| 311 | const u32 seek_rangelow = TEA5777_FM_RANGELOW; |
| 312 | const u32 seek_rangehigh = TEA5777_FM_RANGEHIGH; |
| 313 | |
| 314 | if (a->tuner || a->wrap_around) |
| 315 | return -EINVAL; |
| 316 | |
| 317 | tea->write_reg |= TEA5777_W_PROGBLIM_MASK; |
| 318 | if (seek_rangelow != tea->seek_rangelow) { |
| 319 | tea->write_reg &= ~TEA5777_W_UPDWN_MASK; |
| 320 | tea->freq = seek_rangelow; |
| 321 | res = radio_tea5777_set_freq(tea); |
| 322 | if (res) |
| 323 | goto leave; |
| 324 | tea->seek_rangelow = tea->freq; |
| 325 | } |
| 326 | if (seek_rangehigh != tea->seek_rangehigh) { |
| 327 | tea->write_reg |= TEA5777_W_UPDWN_MASK; |
| 328 | tea->freq = seek_rangehigh; |
| 329 | res = radio_tea5777_set_freq(tea); |
| 330 | if (res) |
| 331 | goto leave; |
| 332 | tea->seek_rangehigh = tea->freq; |
| 333 | } |
| 334 | tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; |
| 335 | |
| 336 | tea->write_reg |= TEA5777_W_SEARCH_MASK; |
| 337 | if (a->seek_upward) { |
| 338 | tea->write_reg |= TEA5777_W_UPDWN_MASK; |
| 339 | tea->freq = orig_freq + spacing; |
| 340 | } else { |
| 341 | tea->write_reg &= ~TEA5777_W_UPDWN_MASK; |
| 342 | tea->freq = orig_freq - spacing; |
| 343 | } |
| 344 | res = radio_tea5777_set_freq(tea); |
| 345 | if (res) |
| 346 | goto leave; |
| 347 | |
| 348 | timeout = jiffies + msecs_to_jiffies(5000); |
| 349 | for (;;) { |
| 350 | if (time_after(jiffies, timeout)) { |
| 351 | res = -ENODATA; |
| 352 | break; |
| 353 | } |
| 354 | |
| 355 | res = radio_tea5777_update_read_reg(tea, 100); |
| 356 | if (res) |
| 357 | break; |
| 358 | |
| 359 | /* |
| 360 | * Note we use tea->freq to track how far we've searched sofar |
| 361 | * this is necessary to ensure we continue seeking at the right |
| 362 | * point, in the write_before_read case. |
| 363 | */ |
| 364 | tea->freq = (tea->read_reg & TEA5777_R_FM_PLL_MASK); |
| 365 | tea->freq = tea5777_freq_to_v4l2_freq(tea, tea->freq); |
| 366 | |
| 367 | if ((tea->read_reg & TEA5777_R_SFOUND_MASK)) { |
| 368 | tea->write_reg &= ~TEA5777_W_SEARCH_MASK; |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | if (tea->read_reg & TEA5777_R_BLIM_MASK) { |
| 373 | res = -ENODATA; |
| 374 | break; |
| 375 | } |
| 376 | |
| 377 | /* Force read_reg update */ |
| 378 | tea->read_reg = -1; |
| 379 | } |
| 380 | leave: |
| 381 | tea->write_reg &= ~TEA5777_W_PROGBLIM_MASK; |
| 382 | tea->write_reg &= ~TEA5777_W_SEARCH_MASK; |
| 383 | tea->freq = orig_freq; |
| 384 | radio_tea5777_set_freq(tea); |
| 385 | return res; |
| 386 | } |
| 387 | |
| 388 | static int tea575x_s_ctrl(struct v4l2_ctrl *c) |
| 389 | { |
| 390 | struct radio_tea5777 *tea = |
| 391 | container_of(c->handler, struct radio_tea5777, ctrl_handler); |
| 392 | |
| 393 | switch (c->id) { |
| 394 | case V4L2_CID_AUDIO_MUTE: |
| 395 | if (c->val) |
| 396 | tea->write_reg |= TEA5777_W_MUTE_MASK; |
| 397 | else |
| 398 | tea->write_reg &= ~TEA5777_W_MUTE_MASK; |
| 399 | |
| 400 | return radio_tea5777_set_freq(tea); |
| 401 | } |
| 402 | |
| 403 | return -EINVAL; |
| 404 | } |
| 405 | |
| 406 | static const struct v4l2_file_operations tea575x_fops = { |
| 407 | .unlocked_ioctl = video_ioctl2, |
| 408 | .open = v4l2_fh_open, |
| 409 | .release = v4l2_fh_release, |
| 410 | .poll = v4l2_ctrl_poll, |
| 411 | }; |
| 412 | |
| 413 | static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { |
| 414 | .vidioc_querycap = vidioc_querycap, |
| 415 | .vidioc_g_tuner = vidioc_g_tuner, |
| 416 | .vidioc_s_tuner = vidioc_s_tuner, |
| 417 | .vidioc_g_frequency = vidioc_g_frequency, |
| 418 | .vidioc_s_frequency = vidioc_s_frequency, |
| 419 | .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek, |
| 420 | .vidioc_log_status = v4l2_ctrl_log_status, |
| 421 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| 422 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
| 423 | }; |
| 424 | |
| 425 | static const struct video_device tea575x_radio = { |
| 426 | .ioctl_ops = &tea575x_ioctl_ops, |
| 427 | .release = video_device_release_empty, |
| 428 | }; |
| 429 | |
| 430 | static const struct v4l2_ctrl_ops tea575x_ctrl_ops = { |
| 431 | .s_ctrl = tea575x_s_ctrl, |
| 432 | }; |
| 433 | |
| 434 | int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner) |
| 435 | { |
| 436 | int res; |
| 437 | |
| 438 | tea->write_reg = (1LL << TEA5777_W_IFCE_SHIFT) | |
| 439 | (1LL << TEA5777_W_IFW_SHIFT) | |
| 440 | (1LL << TEA5777_W_INTEXT_SHIFT) | |
| 441 | (1LL << TEA5777_W_CHP0_SHIFT) | |
| 442 | (2LL << TEA5777_W_SLEV_SHIFT); |
| 443 | tea->freq = 90500 * 16; /* 90.5Mhz default */ |
| 444 | res = radio_tea5777_set_freq(tea); |
| 445 | if (res) { |
| 446 | v4l2_err(tea->v4l2_dev, "can't set initial freq (%d)\n", res); |
| 447 | return res; |
| 448 | } |
| 449 | |
| 450 | tea->vd = tea575x_radio; |
| 451 | video_set_drvdata(&tea->vd, tea); |
| 452 | mutex_init(&tea->mutex); |
| 453 | strlcpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name)); |
| 454 | tea->vd.lock = &tea->mutex; |
| 455 | tea->vd.v4l2_dev = tea->v4l2_dev; |
| 456 | tea->fops = tea575x_fops; |
| 457 | tea->fops.owner = owner; |
| 458 | tea->vd.fops = &tea->fops; |
| 459 | set_bit(V4L2_FL_USE_FH_PRIO, &tea->vd.flags); |
| 460 | |
| 461 | tea->vd.ctrl_handler = &tea->ctrl_handler; |
| 462 | v4l2_ctrl_handler_init(&tea->ctrl_handler, 1); |
| 463 | v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops, |
| 464 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); |
| 465 | res = tea->ctrl_handler.error; |
| 466 | if (res) { |
| 467 | v4l2_err(tea->v4l2_dev, "can't initialize controls\n"); |
| 468 | v4l2_ctrl_handler_free(&tea->ctrl_handler); |
| 469 | return res; |
| 470 | } |
| 471 | v4l2_ctrl_handler_setup(&tea->ctrl_handler); |
| 472 | |
| 473 | res = video_register_device(&tea->vd, VFL_TYPE_RADIO, -1); |
| 474 | if (res) { |
| 475 | v4l2_err(tea->v4l2_dev, "can't register video device!\n"); |
| 476 | v4l2_ctrl_handler_free(tea->vd.ctrl_handler); |
| 477 | return res; |
| 478 | } |
| 479 | |
| 480 | return 0; |
| 481 | } |
| 482 | EXPORT_SYMBOL_GPL(radio_tea5777_init); |
| 483 | |
| 484 | void radio_tea5777_exit(struct radio_tea5777 *tea) |
| 485 | { |
| 486 | video_unregister_device(&tea->vd); |
| 487 | v4l2_ctrl_handler_free(tea->vd.ctrl_handler); |
| 488 | } |
| 489 | EXPORT_SYMBOL_GPL(radio_tea5777_exit); |