Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 1 | /* |
| 2 | * drivers/media/radio/si470x/radio-si470x-common.c |
| 3 | * |
| 4 | * Driver for radios with Silicon Labs Si470x FM Radio Receivers |
| 5 | * |
| 6 | * Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net> |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 7 | * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | |
| 25 | /* |
| 26 | * History: |
| 27 | * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 28 | * Version 1.0.0 |
| 29 | * - First working version |
| 30 | * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 31 | * Version 1.0.1 |
| 32 | * - Improved error handling, every function now returns errno |
| 33 | * - Improved multi user access (start/mute/stop) |
| 34 | * - Channel doesn't get lost anymore after start/mute/stop |
| 35 | * - RDS support added (polling mode via interrupt EP 1) |
| 36 | * - marked default module parameters with *value* |
| 37 | * - switched from bit structs to bit masks |
| 38 | * - header file cleaned and integrated |
| 39 | * 2008-01-14 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 40 | * Version 1.0.2 |
| 41 | * - hex values are now lower case |
| 42 | * - commented USB ID for ADS/Tech moved on todo list |
| 43 | * - blacklisted si470x in hid-quirks.c |
| 44 | * - rds buffer handling functions integrated into *_work, *_read |
| 45 | * - rds_command in si470x_poll exchanged against simple retval |
| 46 | * - check for firmware version 15 |
| 47 | * - code order and prototypes still remain the same |
| 48 | * - spacing and bottom of band codes remain the same |
| 49 | * 2008-01-16 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 50 | * Version 1.0.3 |
| 51 | * - code reordered to avoid function prototypes |
| 52 | * - switch/case defaults are now more user-friendly |
| 53 | * - unified comment style |
| 54 | * - applied all checkpatch.pl v1.12 suggestions |
| 55 | * except the warning about the too long lines with bit comments |
| 56 | * - renamed FMRADIO to RADIO to cut line length (checkpatch.pl) |
| 57 | * 2008-01-22 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 58 | * Version 1.0.4 |
| 59 | * - avoid poss. locking when doing copy_to_user which may sleep |
| 60 | * - RDS is automatically activated on read now |
| 61 | * - code cleaned of unnecessary rds_commands |
| 62 | * - USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified |
| 63 | * (thanks to Guillaume RAMOUSSE) |
| 64 | * 2008-01-27 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 65 | * Version 1.0.5 |
| 66 | * - number of seek_retries changed to tune_timeout |
| 67 | * - fixed problem with incomplete tune operations by own buffers |
| 68 | * - optimization of variables and printf types |
| 69 | * - improved error logging |
| 70 | * 2008-01-31 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 71 | * Oliver Neukum <oliver@neukum.org> |
| 72 | * Version 1.0.6 |
| 73 | * - fixed coverity checker warnings in *_usb_driver_disconnect |
| 74 | * - probe()/open() race by correct ordering in probe() |
| 75 | * - DMA coherency rules by separate allocation of all buffers |
| 76 | * - use of endianness macros |
| 77 | * - abuse of spinlock, replaced by mutex |
| 78 | * - racy handling of timer in disconnect, |
| 79 | * replaced by delayed_work |
| 80 | * - racy interruptible_sleep_on(), |
| 81 | * replaced with wait_event_interruptible() |
| 82 | * - handle signals in read() |
| 83 | * 2008-02-08 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 84 | * Oliver Neukum <oliver@neukum.org> |
| 85 | * Version 1.0.7 |
| 86 | * - usb autosuspend support |
| 87 | * - unplugging fixed |
| 88 | * 2008-05-07 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 89 | * Version 1.0.8 |
| 90 | * - hardware frequency seek support |
| 91 | * - afc indication |
| 92 | * - more safety checks, let si470x_get_freq return errno |
| 93 | * - vidioc behavior corrected according to v4l2 spec |
| 94 | * 2008-10-20 Alexey Klimov <klimov.linux@gmail.com> |
| 95 | * - add support for KWorld USB FM Radio FM700 |
| 96 | * - blacklisted KWorld radio in hid-core.c and hid-ids.h |
| 97 | * 2008-12-03 Mark Lord <mlord@pobox.com> |
| 98 | * - add support for DealExtreme USB Radio |
| 99 | * 2009-01-31 Bob Ross <pigiron@gmx.com> |
| 100 | * - correction of stereo detection/setting |
| 101 | * - correction of signal strength indicator scaling |
| 102 | * 2009-01-31 Rick Bronson <rick@efn.org> |
| 103 | * Tobias Lorenz <tobias.lorenz@gmx.net> |
| 104 | * - add LED status output |
| 105 | * - get HW/SW version from scratchpad |
| 106 | * 2009-06-16 Edouard Lafargue <edouard@lafargue.name> |
| 107 | * Version 1.0.10 |
| 108 | * - add support for interrupt mode for RDS endpoint, |
| 109 | * instead of polling. |
| 110 | * Improves RDS reception significantly |
| 111 | */ |
| 112 | |
| 113 | |
| 114 | /* kernel includes */ |
| 115 | #include "radio-si470x.h" |
| 116 | |
| 117 | |
| 118 | |
| 119 | /************************************************************************** |
| 120 | * Module Parameters |
| 121 | **************************************************************************/ |
| 122 | |
| 123 | /* Spacing (kHz) */ |
| 124 | /* 0: 200 kHz (USA, Australia) */ |
| 125 | /* 1: 100 kHz (Europe, Japan) */ |
| 126 | /* 2: 50 kHz */ |
| 127 | static unsigned short space = 2; |
| 128 | module_param(space, ushort, 0444); |
| 129 | MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*"); |
| 130 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 131 | /* De-emphasis */ |
| 132 | /* 0: 75 us (USA) */ |
| 133 | /* 1: 50 us (Europe, Australia, Japan) */ |
| 134 | static unsigned short de = 1; |
| 135 | module_param(de, ushort, 0444); |
| 136 | MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*"); |
| 137 | |
| 138 | /* Tune timeout */ |
| 139 | static unsigned int tune_timeout = 3000; |
| 140 | module_param(tune_timeout, uint, 0644); |
| 141 | MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*"); |
| 142 | |
| 143 | /* Seek timeout */ |
| 144 | static unsigned int seek_timeout = 5000; |
| 145 | module_param(seek_timeout, uint, 0644); |
| 146 | MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*"); |
| 147 | |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 148 | static const struct v4l2_frequency_band bands[] = { |
| 149 | { |
| 150 | .type = V4L2_TUNER_RADIO, |
| 151 | .index = 0, |
| 152 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
| 153 | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | |
| 154 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | |
| 155 | V4L2_TUNER_CAP_HWSEEK_WRAP, |
| 156 | .rangelow = 87500 * 16, |
| 157 | .rangehigh = 108000 * 16, |
| 158 | .modulation = V4L2_BAND_MODULATION_FM, |
| 159 | }, |
| 160 | { |
| 161 | .type = V4L2_TUNER_RADIO, |
| 162 | .index = 1, |
| 163 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
| 164 | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | |
| 165 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | |
| 166 | V4L2_TUNER_CAP_HWSEEK_WRAP, |
| 167 | .rangelow = 76000 * 16, |
| 168 | .rangehigh = 108000 * 16, |
| 169 | .modulation = V4L2_BAND_MODULATION_FM, |
| 170 | }, |
| 171 | { |
| 172 | .type = V4L2_TUNER_RADIO, |
| 173 | .index = 2, |
| 174 | .capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
| 175 | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | |
| 176 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | |
| 177 | V4L2_TUNER_CAP_HWSEEK_WRAP, |
| 178 | .rangelow = 76000 * 16, |
| 179 | .rangehigh = 90000 * 16, |
| 180 | .modulation = V4L2_BAND_MODULATION_FM, |
| 181 | }, |
| 182 | }; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 183 | |
| 184 | /************************************************************************** |
| 185 | * Generic Functions |
| 186 | **************************************************************************/ |
| 187 | |
| 188 | /* |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 189 | * si470x_set_band - set the band |
| 190 | */ |
| 191 | static int si470x_set_band(struct si470x_device *radio, int band) |
| 192 | { |
| 193 | if (radio->band == band) |
| 194 | return 0; |
| 195 | |
| 196 | radio->band = band; |
| 197 | radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_BAND; |
| 198 | radio->registers[SYSCONFIG2] |= radio->band << 6; |
| 199 | return si470x_set_register(radio, SYSCONFIG2); |
| 200 | } |
| 201 | |
| 202 | /* |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 203 | * si470x_set_chan - set the channel |
| 204 | */ |
| 205 | static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) |
| 206 | { |
| 207 | int retval; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 208 | bool timed_out = 0; |
| 209 | |
| 210 | /* start tuning */ |
| 211 | radio->registers[CHANNEL] &= ~CHANNEL_CHAN; |
| 212 | radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; |
| 213 | retval = si470x_set_register(radio, CHANNEL); |
| 214 | if (retval < 0) |
| 215 | goto done; |
| 216 | |
Hans de Goede | 7794711 | 2012-06-14 09:43:12 -0300 | [diff] [blame] | 217 | /* wait till tune operation has completed */ |
| 218 | INIT_COMPLETION(radio->completion); |
| 219 | retval = wait_for_completion_timeout(&radio->completion, |
| 220 | msecs_to_jiffies(tune_timeout)); |
| 221 | if (!retval) |
| 222 | timed_out = true; |
Joonyoung Shim | 0830be3 | 2011-03-11 03:54:46 -0300 | [diff] [blame] | 223 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 224 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 225 | dev_warn(&radio->videodev.dev, "tune does not complete\n"); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 226 | if (timed_out) |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 227 | dev_warn(&radio->videodev.dev, |
Joonyoung Shim | a9d6fd5 | 2009-08-09 14:22:41 -0300 | [diff] [blame] | 228 | "tune timed out after %u ms\n", tune_timeout); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 229 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 230 | /* stop tuning */ |
| 231 | radio->registers[CHANNEL] &= ~CHANNEL_TUNE; |
| 232 | retval = si470x_set_register(radio, CHANNEL); |
| 233 | |
| 234 | done: |
| 235 | return retval; |
| 236 | } |
| 237 | |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 238 | /* |
| 239 | * si470x_get_step - get channel spacing |
| 240 | */ |
| 241 | static unsigned int si470x_get_step(struct si470x_device *radio) |
| 242 | { |
| 243 | /* Spacing (kHz) */ |
| 244 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { |
| 245 | /* 0: 200 kHz (USA, Australia) */ |
| 246 | case 0: |
| 247 | return 200 * 16; |
| 248 | /* 1: 100 kHz (Europe, Japan) */ |
| 249 | case 1: |
| 250 | return 100 * 16; |
| 251 | /* 2: 50 kHz */ |
| 252 | default: |
| 253 | return 50 * 16; |
| 254 | }; |
| 255 | } |
| 256 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 257 | |
| 258 | /* |
| 259 | * si470x_get_freq - get the frequency |
| 260 | */ |
| 261 | static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq) |
| 262 | { |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 263 | int chan, retval; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 264 | |
| 265 | /* read channel */ |
| 266 | retval = si470x_get_register(radio, READCHAN); |
| 267 | chan = radio->registers[READCHAN] & READCHAN_READCHAN; |
| 268 | |
| 269 | /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 270 | *freq = chan * si470x_get_step(radio) + bands[radio->band].rangelow; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 271 | |
| 272 | return retval; |
| 273 | } |
| 274 | |
| 275 | |
| 276 | /* |
| 277 | * si470x_set_freq - set the frequency |
| 278 | */ |
| 279 | int si470x_set_freq(struct si470x_device *radio, unsigned int freq) |
| 280 | { |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 281 | unsigned short chan; |
| 282 | |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 283 | freq = clamp(freq, bands[radio->band].rangelow, |
| 284 | bands[radio->band].rangehigh); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 285 | /* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */ |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 286 | chan = (freq - bands[radio->band].rangelow) / si470x_get_step(radio); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 287 | |
| 288 | return si470x_set_chan(radio, chan); |
| 289 | } |
| 290 | |
| 291 | |
| 292 | /* |
| 293 | * si470x_set_seek - set seek |
| 294 | */ |
| 295 | static int si470x_set_seek(struct si470x_device *radio, |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 296 | struct v4l2_hw_freq_seek *seek) |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 297 | { |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 298 | int band, retval; |
| 299 | unsigned int freq; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 300 | bool timed_out = 0; |
| 301 | |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 302 | /* set band */ |
| 303 | if (seek->rangelow || seek->rangehigh) { |
| 304 | for (band = 0; band < ARRAY_SIZE(bands); band++) { |
| 305 | if (bands[band].rangelow == seek->rangelow && |
| 306 | bands[band].rangehigh == seek->rangehigh) |
| 307 | break; |
| 308 | } |
| 309 | if (band == ARRAY_SIZE(bands)) |
| 310 | return -EINVAL; /* No matching band found */ |
| 311 | } else |
| 312 | band = 1; /* If nothing is specified seek 76 - 108 Mhz */ |
| 313 | |
| 314 | if (radio->band != band) { |
| 315 | retval = si470x_get_freq(radio, &freq); |
| 316 | if (retval) |
| 317 | return retval; |
| 318 | retval = si470x_set_band(radio, band); |
| 319 | if (retval) |
| 320 | return retval; |
| 321 | retval = si470x_set_freq(radio, freq); |
| 322 | if (retval) |
| 323 | return retval; |
| 324 | } |
| 325 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 326 | /* start seeking */ |
| 327 | radio->registers[POWERCFG] |= POWERCFG_SEEK; |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 328 | if (seek->wrap_around) |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 329 | radio->registers[POWERCFG] &= ~POWERCFG_SKMODE; |
| 330 | else |
| 331 | radio->registers[POWERCFG] |= POWERCFG_SKMODE; |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 332 | if (seek->seek_upward) |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 333 | radio->registers[POWERCFG] |= POWERCFG_SEEKUP; |
| 334 | else |
| 335 | radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP; |
| 336 | retval = si470x_set_register(radio, POWERCFG); |
| 337 | if (retval < 0) |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 338 | return retval; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 339 | |
Hans de Goede | 7794711 | 2012-06-14 09:43:12 -0300 | [diff] [blame] | 340 | /* wait till tune operation has completed */ |
| 341 | INIT_COMPLETION(radio->completion); |
| 342 | retval = wait_for_completion_timeout(&radio->completion, |
| 343 | msecs_to_jiffies(seek_timeout)); |
| 344 | if (!retval) |
| 345 | timed_out = true; |
Joonyoung Shim | 0830be3 | 2011-03-11 03:54:46 -0300 | [diff] [blame] | 346 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 347 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 348 | dev_warn(&radio->videodev.dev, "seek does not complete\n"); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 349 | if (radio->registers[STATUSRSSI] & STATUSRSSI_SF) |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 350 | dev_warn(&radio->videodev.dev, |
Joonyoung Shim | a9d6fd5 | 2009-08-09 14:22:41 -0300 | [diff] [blame] | 351 | "seek failed / band limit reached\n"); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 352 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 353 | /* stop seeking */ |
| 354 | radio->registers[POWERCFG] &= ~POWERCFG_SEEK; |
| 355 | retval = si470x_set_register(radio, POWERCFG); |
| 356 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 357 | /* try again, if timed out */ |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 358 | if (retval == 0 && timed_out) |
Hans Verkuil | 54f6019 | 2012-05-27 07:25:06 -0300 | [diff] [blame] | 359 | return -ENODATA; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 360 | return retval; |
| 361 | } |
| 362 | |
| 363 | |
| 364 | /* |
| 365 | * si470x_start - switch on radio |
| 366 | */ |
| 367 | int si470x_start(struct si470x_device *radio) |
| 368 | { |
| 369 | int retval; |
| 370 | |
| 371 | /* powercfg */ |
| 372 | radio->registers[POWERCFG] = |
| 373 | POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; |
| 374 | retval = si470x_set_register(radio, POWERCFG); |
| 375 | if (retval < 0) |
| 376 | goto done; |
| 377 | |
| 378 | /* sysconfig 1 */ |
Tobias Lorenz | 131ddd1 | 2011-01-08 14:12:30 -0300 | [diff] [blame] | 379 | radio->registers[SYSCONFIG1] = |
| 380 | (de << 11) & SYSCONFIG1_DE; /* DE*/ |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 381 | retval = si470x_set_register(radio, SYSCONFIG1); |
| 382 | if (retval < 0) |
| 383 | goto done; |
| 384 | |
| 385 | /* sysconfig 2 */ |
| 386 | radio->registers[SYSCONFIG2] = |
Hans de Goede | b966425 | 2012-06-14 09:43:13 -0300 | [diff] [blame] | 387 | (0x1f << 8) | /* SEEKTH */ |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 388 | ((radio->band << 6) & SYSCONFIG2_BAND) |/* BAND */ |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 389 | ((space << 4) & SYSCONFIG2_SPACE) | /* SPACE */ |
| 390 | 15; /* VOLUME (max) */ |
| 391 | retval = si470x_set_register(radio, SYSCONFIG2); |
| 392 | if (retval < 0) |
| 393 | goto done; |
| 394 | |
| 395 | /* reset last channel */ |
| 396 | retval = si470x_set_chan(radio, |
| 397 | radio->registers[CHANNEL] & CHANNEL_CHAN); |
| 398 | |
| 399 | done: |
| 400 | return retval; |
| 401 | } |
| 402 | |
| 403 | |
| 404 | /* |
| 405 | * si470x_stop - switch off radio |
| 406 | */ |
| 407 | int si470x_stop(struct si470x_device *radio) |
| 408 | { |
| 409 | int retval; |
| 410 | |
| 411 | /* sysconfig 1 */ |
| 412 | radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; |
| 413 | retval = si470x_set_register(radio, SYSCONFIG1); |
| 414 | if (retval < 0) |
| 415 | goto done; |
| 416 | |
| 417 | /* powercfg */ |
| 418 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; |
| 419 | /* POWERCFG_ENABLE has to automatically go low */ |
| 420 | radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; |
| 421 | retval = si470x_set_register(radio, POWERCFG); |
| 422 | |
| 423 | done: |
| 424 | return retval; |
| 425 | } |
| 426 | |
| 427 | |
| 428 | /* |
| 429 | * si470x_rds_on - switch on rds reception |
| 430 | */ |
Mauro Carvalho Chehab | f2f8e85 | 2010-09-15 08:35:45 -0300 | [diff] [blame] | 431 | static int si470x_rds_on(struct si470x_device *radio) |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 432 | { |
| 433 | int retval; |
| 434 | |
| 435 | /* sysconfig 1 */ |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 436 | radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; |
| 437 | retval = si470x_set_register(radio, SYSCONFIG1); |
| 438 | if (retval < 0) |
| 439 | radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 440 | |
| 441 | return retval; |
| 442 | } |
| 443 | |
| 444 | |
| 445 | |
| 446 | /************************************************************************** |
Joonyoung Shim | 1aa925c | 2009-12-10 16:49:34 -0300 | [diff] [blame] | 447 | * File Operations Interface |
| 448 | **************************************************************************/ |
| 449 | |
| 450 | /* |
| 451 | * si470x_fops_read - read RDS data |
| 452 | */ |
| 453 | static ssize_t si470x_fops_read(struct file *file, char __user *buf, |
| 454 | size_t count, loff_t *ppos) |
| 455 | { |
| 456 | struct si470x_device *radio = video_drvdata(file); |
| 457 | int retval = 0; |
| 458 | unsigned int block_count = 0; |
| 459 | |
| 460 | /* switch on rds reception */ |
| 461 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) |
| 462 | si470x_rds_on(radio); |
| 463 | |
| 464 | /* block if no new data available */ |
| 465 | while (radio->wr_index == radio->rd_index) { |
| 466 | if (file->f_flags & O_NONBLOCK) { |
| 467 | retval = -EWOULDBLOCK; |
| 468 | goto done; |
| 469 | } |
| 470 | if (wait_event_interruptible(radio->read_queue, |
| 471 | radio->wr_index != radio->rd_index) < 0) { |
| 472 | retval = -EINTR; |
| 473 | goto done; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | /* calculate block count from byte count */ |
| 478 | count /= 3; |
| 479 | |
| 480 | /* copy RDS block out of internal buffer and to user buffer */ |
Joonyoung Shim | 1aa925c | 2009-12-10 16:49:34 -0300 | [diff] [blame] | 481 | while (block_count < count) { |
| 482 | if (radio->rd_index == radio->wr_index) |
| 483 | break; |
| 484 | |
| 485 | /* always transfer rds complete blocks */ |
| 486 | if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3)) |
| 487 | /* retval = -EFAULT; */ |
| 488 | break; |
| 489 | |
| 490 | /* increment and wrap read pointer */ |
| 491 | radio->rd_index += 3; |
| 492 | if (radio->rd_index >= radio->buf_size) |
| 493 | radio->rd_index = 0; |
| 494 | |
| 495 | /* increment counters */ |
| 496 | block_count++; |
| 497 | buf += 3; |
| 498 | retval += 3; |
| 499 | } |
Joonyoung Shim | 1aa925c | 2009-12-10 16:49:34 -0300 | [diff] [blame] | 500 | |
| 501 | done: |
| 502 | return retval; |
| 503 | } |
| 504 | |
| 505 | |
| 506 | /* |
| 507 | * si470x_fops_poll - poll RDS data |
| 508 | */ |
| 509 | static unsigned int si470x_fops_poll(struct file *file, |
| 510 | struct poll_table_struct *pts) |
| 511 | { |
| 512 | struct si470x_device *radio = video_drvdata(file); |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 513 | unsigned long req_events = poll_requested_events(pts); |
| 514 | int retval = v4l2_ctrl_poll(file, pts); |
Joonyoung Shim | 1aa925c | 2009-12-10 16:49:34 -0300 | [diff] [blame] | 515 | |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 516 | if (req_events & (POLLIN | POLLRDNORM)) { |
| 517 | /* switch on rds reception */ |
| 518 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) |
| 519 | si470x_rds_on(radio); |
Mauro Carvalho Chehab | f2f8e85 | 2010-09-15 08:35:45 -0300 | [diff] [blame] | 520 | |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 521 | poll_wait(file, &radio->read_queue, pts); |
Joonyoung Shim | 1aa925c | 2009-12-10 16:49:34 -0300 | [diff] [blame] | 522 | |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 523 | if (radio->rd_index != radio->wr_index) |
| 524 | retval |= POLLIN | POLLRDNORM; |
| 525 | } |
Joonyoung Shim | 1aa925c | 2009-12-10 16:49:34 -0300 | [diff] [blame] | 526 | |
| 527 | return retval; |
| 528 | } |
| 529 | |
| 530 | |
| 531 | /* |
| 532 | * si470x_fops - file operations interface |
| 533 | */ |
| 534 | static const struct v4l2_file_operations si470x_fops = { |
| 535 | .owner = THIS_MODULE, |
| 536 | .read = si470x_fops_read, |
| 537 | .poll = si470x_fops_poll, |
Mauro Carvalho Chehab | f2f8e85 | 2010-09-15 08:35:45 -0300 | [diff] [blame] | 538 | .unlocked_ioctl = video_ioctl2, |
Joonyoung Shim | 1aa925c | 2009-12-10 16:49:34 -0300 | [diff] [blame] | 539 | .open = si470x_fops_open, |
| 540 | .release = si470x_fops_release, |
| 541 | }; |
| 542 | |
| 543 | |
| 544 | |
| 545 | /************************************************************************** |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 546 | * Video4Linux Interface |
| 547 | **************************************************************************/ |
| 548 | |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 549 | |
| 550 | static int si470x_s_ctrl(struct v4l2_ctrl *ctrl) |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 551 | { |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 552 | struct si470x_device *radio = |
| 553 | container_of(ctrl->handler, struct si470x_device, hdl); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 554 | |
| 555 | switch (ctrl->id) { |
| 556 | case V4L2_CID_AUDIO_VOLUME: |
| 557 | radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 558 | radio->registers[SYSCONFIG2] |= ctrl->val; |
| 559 | return si470x_set_register(radio, SYSCONFIG2); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 560 | case V4L2_CID_AUDIO_MUTE: |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 561 | if (ctrl->val) |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 562 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; |
| 563 | else |
| 564 | radio->registers[POWERCFG] |= POWERCFG_DMUTE; |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 565 | return si470x_set_register(radio, POWERCFG); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 566 | default: |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 567 | return -EINVAL; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 568 | } |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | |
| 572 | /* |
| 573 | * si470x_vidioc_g_tuner - get tuner attributes |
| 574 | */ |
| 575 | static int si470x_vidioc_g_tuner(struct file *file, void *priv, |
| 576 | struct v4l2_tuner *tuner) |
| 577 | { |
| 578 | struct si470x_device *radio = video_drvdata(file); |
Hans de Goede | 86ef3f7 | 2012-06-14 09:43:11 -0300 | [diff] [blame] | 579 | int retval = 0; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 580 | |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 581 | if (tuner->index != 0) |
| 582 | return -EINVAL; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 583 | |
Hans de Goede | 86ef3f7 | 2012-06-14 09:43:11 -0300 | [diff] [blame] | 584 | if (!radio->status_rssi_auto_update) { |
| 585 | retval = si470x_get_register(radio, STATUSRSSI); |
| 586 | if (retval < 0) |
| 587 | return retval; |
| 588 | } |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 589 | |
| 590 | /* driver constants */ |
| 591 | strcpy(tuner->name, "FM"); |
| 592 | tuner->type = V4L2_TUNER_RADIO; |
| 593 | tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | |
Hans Verkuil | 54f6019 | 2012-05-27 07:25:06 -0300 | [diff] [blame] | 594 | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO | |
| 595 | V4L2_TUNER_CAP_HWSEEK_BOUNDED | |
| 596 | V4L2_TUNER_CAP_HWSEEK_WRAP; |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 597 | tuner->rangelow = 76 * FREQ_MUL; |
| 598 | tuner->rangehigh = 108 * FREQ_MUL; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 599 | |
| 600 | /* stereo indicator == stereo (instead of mono) */ |
| 601 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0) |
| 602 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO; |
| 603 | else |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 604 | tuner->rxsubchans = V4L2_TUNER_SUB_STEREO; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 605 | /* If there is a reliable method of detecting an RDS channel, |
| 606 | then this code should check for that before setting this |
| 607 | RDS subchannel. */ |
| 608 | tuner->rxsubchans |= V4L2_TUNER_SUB_RDS; |
| 609 | |
| 610 | /* mono/stereo selector */ |
| 611 | if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0) |
| 612 | tuner->audmode = V4L2_TUNER_MODE_STEREO; |
| 613 | else |
| 614 | tuner->audmode = V4L2_TUNER_MODE_MONO; |
| 615 | |
| 616 | /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ |
Tobias Lorenz | 144dcdc | 2010-02-18 16:33:46 -0300 | [diff] [blame] | 617 | /* measured in units of dbµV in 1 db increments (max at ~75 dbµV) */ |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 618 | tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI); |
| 619 | /* the ideal factor is 0xffff/75 = 873,8 */ |
| 620 | tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10); |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 621 | if (tuner->signal > 0xffff) |
| 622 | tuner->signal = 0xffff; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 623 | |
| 624 | /* automatic frequency control: -1: freq to low, 1 freq to high */ |
| 625 | /* AFCRL does only indicate that freq. differs, not if too low/high */ |
| 626 | tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0; |
| 627 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 628 | return retval; |
| 629 | } |
| 630 | |
| 631 | |
| 632 | /* |
| 633 | * si470x_vidioc_s_tuner - set tuner attributes |
| 634 | */ |
| 635 | static int si470x_vidioc_s_tuner(struct file *file, void *priv, |
| 636 | struct v4l2_tuner *tuner) |
| 637 | { |
| 638 | struct si470x_device *radio = video_drvdata(file); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 639 | |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 640 | if (tuner->index != 0) |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 641 | return -EINVAL; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 642 | |
| 643 | /* mono/stereo selector */ |
| 644 | switch (tuner->audmode) { |
| 645 | case V4L2_TUNER_MODE_MONO: |
| 646 | radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ |
| 647 | break; |
| 648 | case V4L2_TUNER_MODE_STEREO: |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 649 | default: |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 650 | radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ |
| 651 | break; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 652 | } |
| 653 | |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 654 | return si470x_set_register(radio, POWERCFG); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 655 | } |
| 656 | |
| 657 | |
| 658 | /* |
| 659 | * si470x_vidioc_g_frequency - get tuner or modulator radio frequency |
| 660 | */ |
| 661 | static int si470x_vidioc_g_frequency(struct file *file, void *priv, |
| 662 | struct v4l2_frequency *freq) |
| 663 | { |
| 664 | struct si470x_device *radio = video_drvdata(file); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 665 | |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 666 | if (freq->tuner != 0) |
| 667 | return -EINVAL; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 668 | |
| 669 | freq->type = V4L2_TUNER_RADIO; |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 670 | return si470x_get_freq(radio, &freq->frequency); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 671 | } |
| 672 | |
| 673 | |
| 674 | /* |
| 675 | * si470x_vidioc_s_frequency - set tuner or modulator radio frequency |
| 676 | */ |
| 677 | static int si470x_vidioc_s_frequency(struct file *file, void *priv, |
| 678 | struct v4l2_frequency *freq) |
| 679 | { |
| 680 | struct si470x_device *radio = video_drvdata(file); |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 681 | int retval; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 682 | |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 683 | if (freq->tuner != 0) |
| 684 | return -EINVAL; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 685 | |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 686 | if (freq->frequency < bands[radio->band].rangelow || |
| 687 | freq->frequency > bands[radio->band].rangehigh) { |
| 688 | /* Switch to band 1 which covers everything we support */ |
| 689 | retval = si470x_set_band(radio, 1); |
| 690 | if (retval) |
| 691 | return retval; |
| 692 | } |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 693 | return si470x_set_freq(radio, freq->frequency); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 694 | } |
| 695 | |
| 696 | |
| 697 | /* |
| 698 | * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek |
| 699 | */ |
| 700 | static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv, |
| 701 | struct v4l2_hw_freq_seek *seek) |
| 702 | { |
| 703 | struct si470x_device *radio = video_drvdata(file); |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 704 | |
Hans Verkuil | 340bd4c | 2012-04-30 19:49:27 -0300 | [diff] [blame] | 705 | if (seek->tuner != 0) |
| 706 | return -EINVAL; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 707 | |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 708 | return si470x_set_seek(radio, seek); |
| 709 | } |
| 710 | |
| 711 | /* |
| 712 | * si470x_vidioc_enum_freq_bands - enumerate supported bands |
| 713 | */ |
| 714 | static int si470x_vidioc_enum_freq_bands(struct file *file, void *priv, |
| 715 | struct v4l2_frequency_band *band) |
| 716 | { |
| 717 | if (band->tuner != 0) |
| 718 | return -EINVAL; |
| 719 | if (band->index >= ARRAY_SIZE(bands)) |
| 720 | return -EINVAL; |
| 721 | *band = bands[band->index]; |
| 722 | return 0; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 723 | } |
| 724 | |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 725 | const struct v4l2_ctrl_ops si470x_ctrl_ops = { |
| 726 | .s_ctrl = si470x_s_ctrl, |
| 727 | }; |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 728 | |
| 729 | /* |
| 730 | * si470x_ioctl_ops - video device ioctl operations |
| 731 | */ |
| 732 | static const struct v4l2_ioctl_ops si470x_ioctl_ops = { |
| 733 | .vidioc_querycap = si470x_vidioc_querycap, |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 734 | .vidioc_g_tuner = si470x_vidioc_g_tuner, |
| 735 | .vidioc_s_tuner = si470x_vidioc_s_tuner, |
| 736 | .vidioc_g_frequency = si470x_vidioc_g_frequency, |
| 737 | .vidioc_s_frequency = si470x_vidioc_s_frequency, |
| 738 | .vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek, |
Hans de Goede | f140612 | 2012-07-12 16:55:48 -0300 | [diff] [blame^] | 739 | .vidioc_enum_freq_bands = si470x_vidioc_enum_freq_bands, |
Hans Verkuil | eae63ae | 2012-05-04 09:20:53 -0300 | [diff] [blame] | 740 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| 741 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 742 | }; |
| 743 | |
| 744 | |
| 745 | /* |
| 746 | * si470x_viddev_template - video device interface |
| 747 | */ |
| 748 | struct video_device si470x_viddev_template = { |
| 749 | .fops = &si470x_fops, |
| 750 | .name = DRIVER_NAME, |
Hans Verkuil | 4967d53 | 2012-05-04 09:16:57 -0300 | [diff] [blame] | 751 | .release = video_device_release_empty, |
Joonyoung Shim | b09cd16 | 2009-08-09 14:22:20 -0300 | [diff] [blame] | 752 | .ioctl_ops = &si470x_ioctl_ops, |
| 753 | }; |