Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1 | /* |
| 2 | * drivers/media/radio/si4713-i2c.c |
| 3 | * |
| 4 | * Silicon Labs Si4713 FM Radio Transmitter I2C commands. |
| 5 | * |
| 6 | * Copyright (c) 2009 Nokia Corporation |
| 7 | * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> |
| 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 | #include <linux/mutex.h> |
| 25 | #include <linux/completion.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <linux/i2c.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 29 | #include <linux/slab.h> |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 30 | #include <linux/gpio.h> |
| 31 | #include <linux/regulator/consumer.h> |
Paul Gortmaker | 7a707b8 | 2011-07-03 14:03:12 -0400 | [diff] [blame] | 32 | #include <linux/module.h> |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 33 | #include <media/v4l2-device.h> |
| 34 | #include <media/v4l2-ioctl.h> |
| 35 | #include <media/v4l2-common.h> |
| 36 | |
| 37 | #include "si4713-i2c.h" |
| 38 | |
| 39 | /* module parameters */ |
| 40 | static int debug; |
| 41 | module_param(debug, int, S_IRUGO | S_IWUSR); |
| 42 | MODULE_PARM_DESC(debug, "Debug level (0 - 2)"); |
| 43 | |
| 44 | MODULE_LICENSE("GPL"); |
| 45 | MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>"); |
| 46 | MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter"); |
| 47 | MODULE_VERSION("0.0.1"); |
| 48 | |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 49 | static const char *si4713_supply_names[SI4713_NUM_SUPPLIES] = { |
| 50 | "vio", |
| 51 | "vdd", |
| 52 | }; |
| 53 | |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 54 | #define DEFAULT_RDS_PI 0x00 |
| 55 | #define DEFAULT_RDS_PTY 0x00 |
| 56 | #define DEFAULT_RDS_PS_NAME "" |
| 57 | #define DEFAULT_RDS_RADIO_TEXT DEFAULT_RDS_PS_NAME |
| 58 | #define DEFAULT_RDS_DEVIATION 0x00C8 |
| 59 | #define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003 |
| 60 | #define DEFAULT_LIMITER_RTIME 0x1392 |
| 61 | #define DEFAULT_LIMITER_DEV 0x102CA |
| 62 | #define DEFAULT_PILOT_FREQUENCY 0x4A38 |
| 63 | #define DEFAULT_PILOT_DEVIATION 0x1A5E |
| 64 | #define DEFAULT_ACOMP_ATIME 0x0000 |
| 65 | #define DEFAULT_ACOMP_RTIME 0xF4240L |
| 66 | #define DEFAULT_ACOMP_GAIN 0x0F |
| 67 | #define DEFAULT_ACOMP_THRESHOLD (-0x28) |
| 68 | #define DEFAULT_MUTE 0x01 |
| 69 | #define DEFAULT_POWER_LEVEL 88 |
| 70 | #define DEFAULT_FREQUENCY 8800 |
| 71 | #define DEFAULT_PREEMPHASIS FMPE_EU |
| 72 | #define DEFAULT_TUNE_RNL 0xFF |
| 73 | |
| 74 | #define to_si4713_device(sd) container_of(sd, struct si4713_device, sd) |
| 75 | |
| 76 | /* frequency domain transformation (using times 10 to avoid floats) */ |
| 77 | #define FREQDEV_UNIT 100000 |
| 78 | #define FREQV4L2_MULTI 625 |
| 79 | #define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI) |
| 80 | #define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT) |
| 81 | #define FREQ_RANGE_LOW 7600 |
| 82 | #define FREQ_RANGE_HIGH 10800 |
| 83 | |
| 84 | #define MAX_ARGS 7 |
| 85 | |
| 86 | #define RDS_BLOCK 8 |
| 87 | #define RDS_BLOCK_CLEAR 0x03 |
| 88 | #define RDS_BLOCK_LOAD 0x04 |
| 89 | #define RDS_RADIOTEXT_2A 0x20 |
| 90 | #define RDS_RADIOTEXT_BLK_SIZE 4 |
| 91 | #define RDS_RADIOTEXT_INDEX_MAX 0x0F |
| 92 | #define RDS_CARRIAGE_RETURN 0x0D |
| 93 | |
| 94 | #define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0)) |
| 95 | |
| 96 | #define get_status_bit(p, b, m) (((p) & (m)) >> (b)) |
| 97 | #define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b))) |
| 98 | |
| 99 | #define ATTACK_TIME_UNIT 500 |
| 100 | |
| 101 | #define POWER_OFF 0x00 |
| 102 | #define POWER_ON 0x01 |
| 103 | |
| 104 | #define msb(x) ((u8)((u16) x >> 8)) |
| 105 | #define lsb(x) ((u8)((u16) x & 0x00FF)) |
| 106 | #define compose_u16(msb, lsb) (((u16)msb << 8) | lsb) |
| 107 | #define check_command_failed(status) (!(status & SI4713_CTS) || \ |
| 108 | (status & SI4713_ERR)) |
| 109 | /* mute definition */ |
| 110 | #define set_mute(p) ((p & 1) | ((p & 1) << 1)); |
| 111 | #define get_mute(p) (p & 0x01) |
| 112 | |
| 113 | #ifdef DEBUG |
| 114 | #define DBG_BUFFER(device, message, buffer, size) \ |
| 115 | { \ |
| 116 | int i; \ |
| 117 | char str[(size)*5]; \ |
| 118 | for (i = 0; i < size; i++) \ |
| 119 | sprintf(str + i * 5, " 0x%02x", buffer[i]); \ |
| 120 | v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \ |
| 121 | } |
| 122 | #else |
| 123 | #define DBG_BUFFER(device, message, buffer, size) |
| 124 | #endif |
| 125 | |
| 126 | /* |
| 127 | * Values for limiter release time (sorted by second column) |
| 128 | * device release |
| 129 | * value time (us) |
| 130 | */ |
| 131 | static long limiter_times[] = { |
| 132 | 2000, 250, |
| 133 | 1000, 500, |
| 134 | 510, 1000, |
| 135 | 255, 2000, |
| 136 | 170, 3000, |
| 137 | 127, 4020, |
| 138 | 102, 5010, |
| 139 | 85, 6020, |
| 140 | 73, 7010, |
| 141 | 64, 7990, |
| 142 | 57, 8970, |
| 143 | 51, 10030, |
| 144 | 25, 20470, |
| 145 | 17, 30110, |
| 146 | 13, 39380, |
| 147 | 10, 51190, |
| 148 | 8, 63690, |
| 149 | 7, 73140, |
| 150 | 6, 85330, |
| 151 | 5, 102390, |
| 152 | }; |
| 153 | |
| 154 | /* |
| 155 | * Values for audio compression release time (sorted by second column) |
| 156 | * device release |
| 157 | * value time (us) |
| 158 | */ |
| 159 | static unsigned long acomp_rtimes[] = { |
| 160 | 0, 100000, |
| 161 | 1, 200000, |
| 162 | 2, 350000, |
| 163 | 3, 525000, |
| 164 | 4, 1000000, |
| 165 | }; |
| 166 | |
| 167 | /* |
| 168 | * Values for preemphasis (sorted by second column) |
| 169 | * device preemphasis |
| 170 | * value value (v4l2) |
| 171 | */ |
| 172 | static unsigned long preemphasis_values[] = { |
| 173 | FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED, |
| 174 | FMPE_EU, V4L2_PREEMPHASIS_50_uS, |
| 175 | FMPE_USA, V4L2_PREEMPHASIS_75_uS, |
| 176 | }; |
| 177 | |
| 178 | static int usecs_to_dev(unsigned long usecs, unsigned long const array[], |
| 179 | int size) |
| 180 | { |
| 181 | int i; |
| 182 | int rval = -EINVAL; |
| 183 | |
| 184 | for (i = 0; i < size / 2; i++) |
| 185 | if (array[(i * 2) + 1] >= usecs) { |
| 186 | rval = array[i * 2]; |
| 187 | break; |
| 188 | } |
| 189 | |
| 190 | return rval; |
| 191 | } |
| 192 | |
| 193 | static unsigned long dev_to_usecs(int value, unsigned long const array[], |
| 194 | int size) |
| 195 | { |
| 196 | int i; |
| 197 | int rval = -EINVAL; |
| 198 | |
| 199 | for (i = 0; i < size / 2; i++) |
| 200 | if (array[i * 2] == value) { |
| 201 | rval = array[(i * 2) + 1]; |
| 202 | break; |
| 203 | } |
| 204 | |
| 205 | return rval; |
| 206 | } |
| 207 | |
| 208 | /* si4713_handler: IRQ handler, just complete work */ |
| 209 | static irqreturn_t si4713_handler(int irq, void *dev) |
| 210 | { |
| 211 | struct si4713_device *sdev = dev; |
| 212 | |
| 213 | v4l2_dbg(2, debug, &sdev->sd, |
| 214 | "%s: sending signal to completion work.\n", __func__); |
| 215 | complete(&sdev->work); |
| 216 | |
| 217 | return IRQ_HANDLED; |
| 218 | } |
| 219 | |
| 220 | /* |
| 221 | * si4713_send_command - sends a command to si4713 and waits its response |
| 222 | * @sdev: si4713_device structure for the device we are communicating |
| 223 | * @command: command id |
| 224 | * @args: command arguments we are sending (up to 7) |
| 225 | * @argn: actual size of @args |
| 226 | * @response: buffer to place the expected response from the device (up to 15) |
| 227 | * @respn: actual size of @response |
| 228 | * @usecs: amount of time to wait before reading the response (in usecs) |
| 229 | */ |
| 230 | static int si4713_send_command(struct si4713_device *sdev, const u8 command, |
| 231 | const u8 args[], const int argn, |
| 232 | u8 response[], const int respn, const int usecs) |
| 233 | { |
| 234 | struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); |
| 235 | u8 data1[MAX_ARGS + 1]; |
| 236 | int err; |
| 237 | |
| 238 | if (!client->adapter) |
| 239 | return -ENODEV; |
| 240 | |
| 241 | /* First send the command and its arguments */ |
| 242 | data1[0] = command; |
| 243 | memcpy(data1 + 1, args, argn); |
| 244 | DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1); |
| 245 | |
| 246 | err = i2c_master_send(client, data1, argn + 1); |
| 247 | if (err != argn + 1) { |
| 248 | v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n", |
| 249 | command); |
| 250 | return (err > 0) ? -EIO : err; |
| 251 | } |
| 252 | |
| 253 | /* Wait response from interrupt */ |
| 254 | if (!wait_for_completion_timeout(&sdev->work, |
| 255 | usecs_to_jiffies(usecs) + 1)) |
| 256 | v4l2_warn(&sdev->sd, |
| 257 | "(%s) Device took too much time to answer.\n", |
| 258 | __func__); |
| 259 | |
| 260 | /* Then get the response */ |
| 261 | err = i2c_master_recv(client, response, respn); |
| 262 | if (err != respn) { |
| 263 | v4l2_err(&sdev->sd, |
| 264 | "Error while reading response for command 0x%02x\n", |
| 265 | command); |
| 266 | return (err > 0) ? -EIO : err; |
| 267 | } |
| 268 | |
| 269 | DBG_BUFFER(&sdev->sd, "Response", response, respn); |
| 270 | if (check_command_failed(response[0])) |
| 271 | return -EBUSY; |
| 272 | |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | * si4713_read_property - reads a si4713 property |
| 278 | * @sdev: si4713_device structure for the device we are communicating |
| 279 | * @prop: property identification number |
| 280 | * @pv: property value to be returned on success |
| 281 | */ |
| 282 | static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv) |
| 283 | { |
| 284 | int err; |
| 285 | u8 val[SI4713_GET_PROP_NRESP]; |
| 286 | /* |
| 287 | * .First byte = 0 |
| 288 | * .Second byte = property's MSB |
| 289 | * .Third byte = property's LSB |
| 290 | */ |
| 291 | const u8 args[SI4713_GET_PROP_NARGS] = { |
| 292 | 0x00, |
| 293 | msb(prop), |
| 294 | lsb(prop), |
| 295 | }; |
| 296 | |
| 297 | err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY, |
| 298 | args, ARRAY_SIZE(args), val, |
| 299 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
| 300 | |
| 301 | if (err < 0) |
| 302 | return err; |
| 303 | |
| 304 | *pv = compose_u16(val[2], val[3]); |
| 305 | |
| 306 | v4l2_dbg(1, debug, &sdev->sd, |
| 307 | "%s: property=0x%02x value=0x%02x status=0x%02x\n", |
| 308 | __func__, prop, *pv, val[0]); |
| 309 | |
| 310 | return err; |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * si4713_write_property - modifies a si4713 property |
| 315 | * @sdev: si4713_device structure for the device we are communicating |
| 316 | * @prop: property identification number |
| 317 | * @val: new value for that property |
| 318 | */ |
| 319 | static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val) |
| 320 | { |
| 321 | int rval; |
| 322 | u8 resp[SI4713_SET_PROP_NRESP]; |
| 323 | /* |
| 324 | * .First byte = 0 |
| 325 | * .Second byte = property's MSB |
| 326 | * .Third byte = property's LSB |
| 327 | * .Fourth byte = value's MSB |
| 328 | * .Fifth byte = value's LSB |
| 329 | */ |
| 330 | const u8 args[SI4713_SET_PROP_NARGS] = { |
| 331 | 0x00, |
| 332 | msb(prop), |
| 333 | lsb(prop), |
| 334 | msb(val), |
| 335 | lsb(val), |
| 336 | }; |
| 337 | |
| 338 | rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY, |
| 339 | args, ARRAY_SIZE(args), |
| 340 | resp, ARRAY_SIZE(resp), |
| 341 | DEFAULT_TIMEOUT); |
| 342 | |
| 343 | if (rval < 0) |
| 344 | return rval; |
| 345 | |
| 346 | v4l2_dbg(1, debug, &sdev->sd, |
| 347 | "%s: property=0x%02x value=0x%02x status=0x%02x\n", |
| 348 | __func__, prop, val, resp[0]); |
| 349 | |
| 350 | /* |
| 351 | * As there is no command response for SET_PROPERTY, |
| 352 | * wait Tcomp time to finish before proceed, in order |
| 353 | * to have property properly set. |
| 354 | */ |
| 355 | msleep(TIMEOUT_SET_PROPERTY); |
| 356 | |
| 357 | return rval; |
| 358 | } |
| 359 | |
| 360 | /* |
| 361 | * si4713_powerup - Powers the device up |
| 362 | * @sdev: si4713_device structure for the device we are communicating |
| 363 | */ |
| 364 | static int si4713_powerup(struct si4713_device *sdev) |
| 365 | { |
| 366 | int err; |
| 367 | u8 resp[SI4713_PWUP_NRESP]; |
| 368 | /* |
| 369 | * .First byte = Enabled interrupts and boot function |
| 370 | * .Second byte = Input operation mode |
| 371 | */ |
| 372 | const u8 args[SI4713_PWUP_NARGS] = { |
| 373 | SI4713_PWUP_CTSIEN | SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX, |
| 374 | SI4713_PWUP_OPMOD_ANALOG, |
| 375 | }; |
| 376 | |
| 377 | if (sdev->power_state) |
| 378 | return 0; |
| 379 | |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 380 | err = regulator_bulk_enable(ARRAY_SIZE(sdev->supplies), |
| 381 | sdev->supplies); |
| 382 | if (err) { |
| 383 | v4l2_err(&sdev->sd, "Failed to enable supplies: %d\n", err); |
| 384 | return err; |
| 385 | } |
| 386 | if (gpio_is_valid(sdev->gpio_reset)) { |
| 387 | udelay(50); |
| 388 | gpio_set_value(sdev->gpio_reset, 1); |
| 389 | } |
| 390 | |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 391 | err = si4713_send_command(sdev, SI4713_CMD_POWER_UP, |
| 392 | args, ARRAY_SIZE(args), |
| 393 | resp, ARRAY_SIZE(resp), |
| 394 | TIMEOUT_POWER_UP); |
| 395 | |
| 396 | if (!err) { |
| 397 | v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n", |
| 398 | resp[0]); |
| 399 | v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n"); |
| 400 | sdev->power_state = POWER_ON; |
| 401 | |
| 402 | err = si4713_write_property(sdev, SI4713_GPO_IEN, |
| 403 | SI4713_STC_INT | SI4713_CTS); |
| 404 | } else { |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 405 | if (gpio_is_valid(sdev->gpio_reset)) |
| 406 | gpio_set_value(sdev->gpio_reset, 0); |
| 407 | err = regulator_bulk_disable(ARRAY_SIZE(sdev->supplies), |
| 408 | sdev->supplies); |
| 409 | if (err) |
| 410 | v4l2_err(&sdev->sd, |
| 411 | "Failed to disable supplies: %d\n", err); |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | return err; |
| 415 | } |
| 416 | |
| 417 | /* |
| 418 | * si4713_powerdown - Powers the device down |
| 419 | * @sdev: si4713_device structure for the device we are communicating |
| 420 | */ |
| 421 | static int si4713_powerdown(struct si4713_device *sdev) |
| 422 | { |
| 423 | int err; |
| 424 | u8 resp[SI4713_PWDN_NRESP]; |
| 425 | |
| 426 | if (!sdev->power_state) |
| 427 | return 0; |
| 428 | |
| 429 | err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN, |
| 430 | NULL, 0, |
| 431 | resp, ARRAY_SIZE(resp), |
| 432 | DEFAULT_TIMEOUT); |
| 433 | |
| 434 | if (!err) { |
| 435 | v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n", |
| 436 | resp[0]); |
| 437 | v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n"); |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 438 | if (gpio_is_valid(sdev->gpio_reset)) |
| 439 | gpio_set_value(sdev->gpio_reset, 0); |
| 440 | err = regulator_bulk_disable(ARRAY_SIZE(sdev->supplies), |
| 441 | sdev->supplies); |
| 442 | if (err) |
| 443 | v4l2_err(&sdev->sd, |
| 444 | "Failed to disable supplies: %d\n", err); |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 445 | sdev->power_state = POWER_OFF; |
| 446 | } |
| 447 | |
| 448 | return err; |
| 449 | } |
| 450 | |
| 451 | /* |
| 452 | * si4713_checkrev - Checks if we are treating a device with the correct rev. |
| 453 | * @sdev: si4713_device structure for the device we are communicating |
| 454 | */ |
| 455 | static int si4713_checkrev(struct si4713_device *sdev) |
| 456 | { |
| 457 | struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); |
| 458 | int rval; |
| 459 | u8 resp[SI4713_GETREV_NRESP]; |
| 460 | |
| 461 | mutex_lock(&sdev->mutex); |
| 462 | |
| 463 | rval = si4713_send_command(sdev, SI4713_CMD_GET_REV, |
| 464 | NULL, 0, |
| 465 | resp, ARRAY_SIZE(resp), |
| 466 | DEFAULT_TIMEOUT); |
| 467 | |
| 468 | if (rval < 0) |
| 469 | goto unlock; |
| 470 | |
| 471 | if (resp[1] == SI4713_PRODUCT_NUMBER) { |
| 472 | v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n", |
| 473 | client->addr << 1, client->adapter->name); |
| 474 | } else { |
| 475 | v4l2_err(&sdev->sd, "Invalid product number\n"); |
| 476 | rval = -EINVAL; |
| 477 | } |
| 478 | |
| 479 | unlock: |
| 480 | mutex_unlock(&sdev->mutex); |
| 481 | return rval; |
| 482 | } |
| 483 | |
| 484 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 485 | * si4713_wait_stc - Waits STC interrupt and clears status bits. Useful |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 486 | * for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS |
| 487 | * @sdev: si4713_device structure for the device we are communicating |
| 488 | * @usecs: timeout to wait for STC interrupt signal |
| 489 | */ |
| 490 | static int si4713_wait_stc(struct si4713_device *sdev, const int usecs) |
| 491 | { |
| 492 | int err; |
| 493 | u8 resp[SI4713_GET_STATUS_NRESP]; |
| 494 | |
| 495 | /* Wait response from STC interrupt */ |
| 496 | if (!wait_for_completion_timeout(&sdev->work, |
| 497 | usecs_to_jiffies(usecs) + 1)) |
| 498 | v4l2_warn(&sdev->sd, |
| 499 | "%s: device took too much time to answer (%d usec).\n", |
| 500 | __func__, usecs); |
| 501 | |
| 502 | /* Clear status bits */ |
| 503 | err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS, |
| 504 | NULL, 0, |
| 505 | resp, ARRAY_SIZE(resp), |
| 506 | DEFAULT_TIMEOUT); |
| 507 | |
| 508 | if (err < 0) |
| 509 | goto exit; |
| 510 | |
| 511 | v4l2_dbg(1, debug, &sdev->sd, |
| 512 | "%s: status bits: 0x%02x\n", __func__, resp[0]); |
| 513 | |
| 514 | if (!(resp[0] & SI4713_STC_INT)) |
| 515 | err = -EIO; |
| 516 | |
| 517 | exit: |
| 518 | return err; |
| 519 | } |
| 520 | |
| 521 | /* |
| 522 | * si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning |
| 523 | * frequency between 76 and 108 MHz in 10 kHz units and |
| 524 | * steps of 50 kHz. |
| 525 | * @sdev: si4713_device structure for the device we are communicating |
| 526 | * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) |
| 527 | */ |
| 528 | static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency) |
| 529 | { |
| 530 | int err; |
| 531 | u8 val[SI4713_TXFREQ_NRESP]; |
| 532 | /* |
| 533 | * .First byte = 0 |
| 534 | * .Second byte = frequency's MSB |
| 535 | * .Third byte = frequency's LSB |
| 536 | */ |
| 537 | const u8 args[SI4713_TXFREQ_NARGS] = { |
| 538 | 0x00, |
| 539 | msb(frequency), |
| 540 | lsb(frequency), |
| 541 | }; |
| 542 | |
| 543 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ, |
| 544 | args, ARRAY_SIZE(args), val, |
| 545 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
| 546 | |
| 547 | if (err < 0) |
| 548 | return err; |
| 549 | |
| 550 | v4l2_dbg(1, debug, &sdev->sd, |
| 551 | "%s: frequency=0x%02x status=0x%02x\n", __func__, |
| 552 | frequency, val[0]); |
| 553 | |
| 554 | err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); |
| 555 | if (err < 0) |
| 556 | return err; |
| 557 | |
| 558 | return compose_u16(args[1], args[2]); |
| 559 | } |
| 560 | |
| 561 | /* |
| 562 | * si4713_tx_tune_power - Sets the RF voltage level between 88 and 115 dBuV in |
| 563 | * 1 dB units. A value of 0x00 indicates off. The command |
| 564 | * also sets the antenna tuning capacitance. A value of 0 |
| 565 | * indicates autotuning, and a value of 1 - 191 indicates |
| 566 | * a manual override, which results in a tuning |
| 567 | * capacitance of 0.25 pF x @antcap. |
| 568 | * @sdev: si4713_device structure for the device we are communicating |
| 569 | * @power: tuning power (88 - 115 dBuV, unit/step 1 dB) |
| 570 | * @antcap: value of antenna tuning capacitor (0 - 191) |
| 571 | */ |
| 572 | static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power, |
| 573 | u8 antcap) |
| 574 | { |
| 575 | int err; |
| 576 | u8 val[SI4713_TXPWR_NRESP]; |
| 577 | /* |
| 578 | * .First byte = 0 |
| 579 | * .Second byte = 0 |
| 580 | * .Third byte = power |
| 581 | * .Fourth byte = antcap |
| 582 | */ |
| 583 | const u8 args[SI4713_TXPWR_NARGS] = { |
| 584 | 0x00, |
| 585 | 0x00, |
| 586 | power, |
| 587 | antcap, |
| 588 | }; |
| 589 | |
| 590 | if (((power > 0) && (power < SI4713_MIN_POWER)) || |
| 591 | power > SI4713_MAX_POWER || antcap > SI4713_MAX_ANTCAP) |
| 592 | return -EDOM; |
| 593 | |
| 594 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER, |
| 595 | args, ARRAY_SIZE(args), val, |
| 596 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
| 597 | |
| 598 | if (err < 0) |
| 599 | return err; |
| 600 | |
| 601 | v4l2_dbg(1, debug, &sdev->sd, |
| 602 | "%s: power=0x%02x antcap=0x%02x status=0x%02x\n", |
| 603 | __func__, power, antcap, val[0]); |
| 604 | |
| 605 | return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER); |
| 606 | } |
| 607 | |
| 608 | /* |
| 609 | * si4713_tx_tune_measure - Enters receive mode and measures the received noise |
| 610 | * level in units of dBuV on the selected frequency. |
| 611 | * The Frequency must be between 76 and 108 MHz in 10 kHz |
| 612 | * units and steps of 50 kHz. The command also sets the |
| 613 | * antenna tuning capacitance. A value of 0 means |
| 614 | * autotuning, and a value of 1 to 191 indicates manual |
| 615 | * override. |
| 616 | * @sdev: si4713_device structure for the device we are communicating |
| 617 | * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) |
| 618 | * @antcap: value of antenna tuning capacitor (0 - 191) |
| 619 | */ |
| 620 | static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency, |
| 621 | u8 antcap) |
| 622 | { |
| 623 | int err; |
| 624 | u8 val[SI4713_TXMEA_NRESP]; |
| 625 | /* |
| 626 | * .First byte = 0 |
| 627 | * .Second byte = frequency's MSB |
| 628 | * .Third byte = frequency's LSB |
| 629 | * .Fourth byte = antcap |
| 630 | */ |
| 631 | const u8 args[SI4713_TXMEA_NARGS] = { |
| 632 | 0x00, |
| 633 | msb(frequency), |
| 634 | lsb(frequency), |
| 635 | antcap, |
| 636 | }; |
| 637 | |
| 638 | sdev->tune_rnl = DEFAULT_TUNE_RNL; |
| 639 | |
| 640 | if (antcap > SI4713_MAX_ANTCAP) |
| 641 | return -EDOM; |
| 642 | |
| 643 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE, |
| 644 | args, ARRAY_SIZE(args), val, |
| 645 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
| 646 | |
| 647 | if (err < 0) |
| 648 | return err; |
| 649 | |
| 650 | v4l2_dbg(1, debug, &sdev->sd, |
| 651 | "%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n", |
| 652 | __func__, frequency, antcap, val[0]); |
| 653 | |
| 654 | return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); |
| 655 | } |
| 656 | |
| 657 | /* |
| 658 | * si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or |
| 659 | * tx_tune_power commands. This command return the current |
| 660 | * frequency, output voltage in dBuV, the antenna tunning |
| 661 | * capacitance value and the received noise level. The |
| 662 | * command also clears the stcint interrupt bit when the |
| 663 | * first bit of its arguments is high. |
| 664 | * @sdev: si4713_device structure for the device we are communicating |
| 665 | * @intack: 0x01 to clear the seek/tune complete interrupt status indicator. |
| 666 | * @frequency: returned frequency |
| 667 | * @power: returned power |
| 668 | * @antcap: returned antenna capacitance |
| 669 | * @noise: returned noise level |
| 670 | */ |
| 671 | static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack, |
| 672 | u16 *frequency, u8 *power, |
| 673 | u8 *antcap, u8 *noise) |
| 674 | { |
| 675 | int err; |
| 676 | u8 val[SI4713_TXSTATUS_NRESP]; |
| 677 | /* |
| 678 | * .First byte = intack bit |
| 679 | */ |
| 680 | const u8 args[SI4713_TXSTATUS_NARGS] = { |
| 681 | intack & SI4713_INTACK_MASK, |
| 682 | }; |
| 683 | |
| 684 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS, |
| 685 | args, ARRAY_SIZE(args), val, |
| 686 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
| 687 | |
| 688 | if (!err) { |
| 689 | v4l2_dbg(1, debug, &sdev->sd, |
| 690 | "%s: status=0x%02x\n", __func__, val[0]); |
| 691 | *frequency = compose_u16(val[2], val[3]); |
| 692 | sdev->frequency = *frequency; |
| 693 | *power = val[5]; |
| 694 | *antcap = val[6]; |
| 695 | *noise = val[7]; |
| 696 | v4l2_dbg(1, debug, &sdev->sd, "%s: response: %d x 10 kHz " |
| 697 | "(power %d, antcap %d, rnl %d)\n", __func__, |
| 698 | *frequency, *power, *antcap, *noise); |
| 699 | } |
| 700 | |
| 701 | return err; |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer. |
| 706 | * @sdev: si4713_device structure for the device we are communicating |
| 707 | * @mode: the buffer operation mode. |
| 708 | * @rdsb: RDS Block B |
| 709 | * @rdsc: RDS Block C |
| 710 | * @rdsd: RDS Block D |
| 711 | * @cbleft: returns the number of available circular buffer blocks minus the |
| 712 | * number of used circular buffer blocks. |
| 713 | */ |
| 714 | static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb, |
| 715 | u16 rdsc, u16 rdsd, s8 *cbleft) |
| 716 | { |
| 717 | int err; |
| 718 | u8 val[SI4713_RDSBUFF_NRESP]; |
| 719 | |
| 720 | const u8 args[SI4713_RDSBUFF_NARGS] = { |
| 721 | mode & SI4713_RDSBUFF_MODE_MASK, |
| 722 | msb(rdsb), |
| 723 | lsb(rdsb), |
| 724 | msb(rdsc), |
| 725 | lsb(rdsc), |
| 726 | msb(rdsd), |
| 727 | lsb(rdsd), |
| 728 | }; |
| 729 | |
| 730 | err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF, |
| 731 | args, ARRAY_SIZE(args), val, |
| 732 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
| 733 | |
| 734 | if (!err) { |
| 735 | v4l2_dbg(1, debug, &sdev->sd, |
| 736 | "%s: status=0x%02x\n", __func__, val[0]); |
| 737 | *cbleft = (s8)val[2] - val[3]; |
| 738 | v4l2_dbg(1, debug, &sdev->sd, "%s: response: interrupts" |
| 739 | " 0x%02x cb avail: %d cb used %d fifo avail" |
| 740 | " %d fifo used %d\n", __func__, val[1], |
| 741 | val[2], val[3], val[4], val[5]); |
| 742 | } |
| 743 | |
| 744 | return err; |
| 745 | } |
| 746 | |
| 747 | /* |
| 748 | * si4713_tx_rds_ps - Loads the program service buffer. |
| 749 | * @sdev: si4713_device structure for the device we are communicating |
| 750 | * @psid: program service id to be loaded. |
| 751 | * @pschar: assumed 4 size char array to be loaded into the program service |
| 752 | */ |
| 753 | static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid, |
| 754 | unsigned char *pschar) |
| 755 | { |
| 756 | int err; |
| 757 | u8 val[SI4713_RDSPS_NRESP]; |
| 758 | |
| 759 | const u8 args[SI4713_RDSPS_NARGS] = { |
| 760 | psid & SI4713_RDSPS_PSID_MASK, |
| 761 | pschar[0], |
| 762 | pschar[1], |
| 763 | pschar[2], |
| 764 | pschar[3], |
| 765 | }; |
| 766 | |
| 767 | err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS, |
| 768 | args, ARRAY_SIZE(args), val, |
| 769 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
| 770 | |
| 771 | if (err < 0) |
| 772 | return err; |
| 773 | |
| 774 | v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]); |
| 775 | |
| 776 | return err; |
| 777 | } |
| 778 | |
| 779 | static int si4713_set_power_state(struct si4713_device *sdev, u8 value) |
| 780 | { |
| 781 | int rval; |
| 782 | |
| 783 | mutex_lock(&sdev->mutex); |
| 784 | |
| 785 | if (value) |
| 786 | rval = si4713_powerup(sdev); |
| 787 | else |
| 788 | rval = si4713_powerdown(sdev); |
| 789 | |
| 790 | mutex_unlock(&sdev->mutex); |
| 791 | return rval; |
| 792 | } |
| 793 | |
| 794 | static int si4713_set_mute(struct si4713_device *sdev, u16 mute) |
| 795 | { |
| 796 | int rval = 0; |
| 797 | |
| 798 | mute = set_mute(mute); |
| 799 | |
| 800 | mutex_lock(&sdev->mutex); |
| 801 | |
| 802 | if (sdev->power_state) |
| 803 | rval = si4713_write_property(sdev, |
| 804 | SI4713_TX_LINE_INPUT_MUTE, mute); |
| 805 | |
| 806 | if (rval >= 0) |
| 807 | sdev->mute = get_mute(mute); |
| 808 | |
| 809 | mutex_unlock(&sdev->mutex); |
| 810 | |
| 811 | return rval; |
| 812 | } |
| 813 | |
| 814 | static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name) |
| 815 | { |
| 816 | int rval = 0, i; |
| 817 | u8 len = 0; |
| 818 | |
| 819 | /* We want to clear the whole thing */ |
| 820 | if (!strlen(ps_name)) |
| 821 | memset(ps_name, 0, MAX_RDS_PS_NAME + 1); |
| 822 | |
| 823 | mutex_lock(&sdev->mutex); |
| 824 | |
| 825 | if (sdev->power_state) { |
| 826 | /* Write the new ps name and clear the padding */ |
| 827 | for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) { |
| 828 | rval = si4713_tx_rds_ps(sdev, (i / (RDS_BLOCK / 2)), |
| 829 | ps_name + i); |
| 830 | if (rval < 0) |
| 831 | goto unlock; |
| 832 | } |
| 833 | |
| 834 | /* Setup the size to be sent */ |
| 835 | if (strlen(ps_name)) |
| 836 | len = strlen(ps_name) - 1; |
| 837 | else |
| 838 | len = 1; |
| 839 | |
| 840 | rval = si4713_write_property(sdev, |
| 841 | SI4713_TX_RDS_PS_MESSAGE_COUNT, |
| 842 | rds_ps_nblocks(len)); |
| 843 | if (rval < 0) |
| 844 | goto unlock; |
| 845 | |
| 846 | rval = si4713_write_property(sdev, |
| 847 | SI4713_TX_RDS_PS_REPEAT_COUNT, |
| 848 | DEFAULT_RDS_PS_REPEAT_COUNT * 2); |
| 849 | if (rval < 0) |
| 850 | goto unlock; |
| 851 | } |
| 852 | |
| 853 | strncpy(sdev->rds_info.ps_name, ps_name, MAX_RDS_PS_NAME); |
| 854 | |
| 855 | unlock: |
| 856 | mutex_unlock(&sdev->mutex); |
| 857 | return rval; |
| 858 | } |
| 859 | |
| 860 | static int si4713_set_rds_radio_text(struct si4713_device *sdev, char *rt) |
| 861 | { |
| 862 | int rval = 0, i; |
| 863 | u16 t_index = 0; |
| 864 | u8 b_index = 0, cr_inserted = 0; |
| 865 | s8 left; |
| 866 | |
| 867 | mutex_lock(&sdev->mutex); |
| 868 | |
| 869 | if (!sdev->power_state) |
| 870 | goto copy; |
| 871 | |
| 872 | rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left); |
| 873 | if (rval < 0) |
| 874 | goto unlock; |
| 875 | |
| 876 | if (!strlen(rt)) |
| 877 | goto copy; |
| 878 | |
| 879 | do { |
| 880 | /* RDS spec says that if the last block isn't used, |
| 881 | * then apply a carriage return |
| 882 | */ |
| 883 | if (t_index < (RDS_RADIOTEXT_INDEX_MAX * |
| 884 | RDS_RADIOTEXT_BLK_SIZE)) { |
| 885 | for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) { |
| 886 | if (!rt[t_index + i] || rt[t_index + i] == |
| 887 | RDS_CARRIAGE_RETURN) { |
| 888 | rt[t_index + i] = RDS_CARRIAGE_RETURN; |
| 889 | cr_inserted = 1; |
| 890 | break; |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD, |
| 896 | compose_u16(RDS_RADIOTEXT_2A, b_index++), |
| 897 | compose_u16(rt[t_index], rt[t_index + 1]), |
| 898 | compose_u16(rt[t_index + 2], rt[t_index + 3]), |
| 899 | &left); |
| 900 | if (rval < 0) |
| 901 | goto unlock; |
| 902 | |
| 903 | t_index += RDS_RADIOTEXT_BLK_SIZE; |
| 904 | |
| 905 | if (cr_inserted) |
| 906 | break; |
| 907 | } while (left > 0); |
| 908 | |
| 909 | copy: |
| 910 | strncpy(sdev->rds_info.radio_text, rt, MAX_RDS_RADIO_TEXT); |
| 911 | |
| 912 | unlock: |
| 913 | mutex_unlock(&sdev->mutex); |
| 914 | return rval; |
| 915 | } |
| 916 | |
| 917 | static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id, |
| 918 | u32 **shadow, s32 *bit, s32 *mask, u16 *property, int *mul, |
| 919 | unsigned long **table, int *size) |
| 920 | { |
| 921 | s32 rval = 0; |
| 922 | |
| 923 | switch (id) { |
| 924 | /* FM_TX class controls */ |
| 925 | case V4L2_CID_RDS_TX_PI: |
| 926 | *property = SI4713_TX_RDS_PI; |
| 927 | *mul = 1; |
| 928 | *shadow = &sdev->rds_info.pi; |
| 929 | break; |
| 930 | case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: |
| 931 | *property = SI4713_TX_ACOMP_THRESHOLD; |
| 932 | *mul = 1; |
| 933 | *shadow = &sdev->acomp_info.threshold; |
| 934 | break; |
| 935 | case V4L2_CID_AUDIO_COMPRESSION_GAIN: |
| 936 | *property = SI4713_TX_ACOMP_GAIN; |
| 937 | *mul = 1; |
| 938 | *shadow = &sdev->acomp_info.gain; |
| 939 | break; |
| 940 | case V4L2_CID_PILOT_TONE_FREQUENCY: |
| 941 | *property = SI4713_TX_PILOT_FREQUENCY; |
| 942 | *mul = 1; |
| 943 | *shadow = &sdev->pilot_info.frequency; |
| 944 | break; |
| 945 | case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: |
| 946 | *property = SI4713_TX_ACOMP_ATTACK_TIME; |
| 947 | *mul = ATTACK_TIME_UNIT; |
| 948 | *shadow = &sdev->acomp_info.attack_time; |
| 949 | break; |
| 950 | case V4L2_CID_PILOT_TONE_DEVIATION: |
| 951 | *property = SI4713_TX_PILOT_DEVIATION; |
| 952 | *mul = 10; |
| 953 | *shadow = &sdev->pilot_info.deviation; |
| 954 | break; |
| 955 | case V4L2_CID_AUDIO_LIMITER_DEVIATION: |
| 956 | *property = SI4713_TX_AUDIO_DEVIATION; |
| 957 | *mul = 10; |
| 958 | *shadow = &sdev->limiter_info.deviation; |
| 959 | break; |
| 960 | case V4L2_CID_RDS_TX_DEVIATION: |
| 961 | *property = SI4713_TX_RDS_DEVIATION; |
| 962 | *mul = 1; |
| 963 | *shadow = &sdev->rds_info.deviation; |
| 964 | break; |
| 965 | |
| 966 | case V4L2_CID_RDS_TX_PTY: |
| 967 | *property = SI4713_TX_RDS_PS_MISC; |
| 968 | *bit = 5; |
| 969 | *mask = 0x1F << 5; |
| 970 | *shadow = &sdev->rds_info.pty; |
| 971 | break; |
| 972 | case V4L2_CID_AUDIO_LIMITER_ENABLED: |
| 973 | *property = SI4713_TX_ACOMP_ENABLE; |
| 974 | *bit = 1; |
| 975 | *mask = 1 << 1; |
| 976 | *shadow = &sdev->limiter_info.enabled; |
| 977 | break; |
| 978 | case V4L2_CID_AUDIO_COMPRESSION_ENABLED: |
| 979 | *property = SI4713_TX_ACOMP_ENABLE; |
| 980 | *bit = 0; |
| 981 | *mask = 1 << 0; |
| 982 | *shadow = &sdev->acomp_info.enabled; |
| 983 | break; |
| 984 | case V4L2_CID_PILOT_TONE_ENABLED: |
| 985 | *property = SI4713_TX_COMPONENT_ENABLE; |
| 986 | *bit = 0; |
| 987 | *mask = 1 << 0; |
| 988 | *shadow = &sdev->pilot_info.enabled; |
| 989 | break; |
| 990 | |
| 991 | case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: |
| 992 | *property = SI4713_TX_LIMITER_RELEASE_TIME; |
| 993 | *table = limiter_times; |
| 994 | *size = ARRAY_SIZE(limiter_times); |
| 995 | *shadow = &sdev->limiter_info.release_time; |
| 996 | break; |
| 997 | case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: |
| 998 | *property = SI4713_TX_ACOMP_RELEASE_TIME; |
| 999 | *table = acomp_rtimes; |
| 1000 | *size = ARRAY_SIZE(acomp_rtimes); |
| 1001 | *shadow = &sdev->acomp_info.release_time; |
| 1002 | break; |
| 1003 | case V4L2_CID_TUNE_PREEMPHASIS: |
| 1004 | *property = SI4713_TX_PREEMPHASIS; |
| 1005 | *table = preemphasis_values; |
| 1006 | *size = ARRAY_SIZE(preemphasis_values); |
| 1007 | *shadow = &sdev->preemphasis; |
| 1008 | break; |
| 1009 | |
| 1010 | default: |
| 1011 | rval = -EINVAL; |
| 1012 | }; |
| 1013 | |
| 1014 | return rval; |
| 1015 | } |
| 1016 | |
| 1017 | static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc); |
| 1018 | |
| 1019 | /* write string property */ |
| 1020 | static int si4713_write_econtrol_string(struct si4713_device *sdev, |
| 1021 | struct v4l2_ext_control *control) |
| 1022 | { |
| 1023 | struct v4l2_queryctrl vqc; |
| 1024 | int len; |
| 1025 | s32 rval = 0; |
| 1026 | |
| 1027 | vqc.id = control->id; |
| 1028 | rval = si4713_queryctrl(&sdev->sd, &vqc); |
| 1029 | if (rval < 0) |
| 1030 | goto exit; |
| 1031 | |
| 1032 | switch (control->id) { |
| 1033 | case V4L2_CID_RDS_TX_PS_NAME: { |
| 1034 | char ps_name[MAX_RDS_PS_NAME + 1]; |
| 1035 | |
| 1036 | len = control->size - 1; |
Mauro Carvalho Chehab | dc6b845 | 2011-07-17 00:24:37 -0300 | [diff] [blame] | 1037 | if (len < 0 || len > MAX_RDS_PS_NAME) { |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1038 | rval = -ERANGE; |
| 1039 | goto exit; |
| 1040 | } |
| 1041 | rval = copy_from_user(ps_name, control->string, len); |
Dan Carpenter | aac870a | 2010-06-04 07:34:40 -0300 | [diff] [blame] | 1042 | if (rval) { |
| 1043 | rval = -EFAULT; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1044 | goto exit; |
Dan Carpenter | aac870a | 2010-06-04 07:34:40 -0300 | [diff] [blame] | 1045 | } |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1046 | ps_name[len] = '\0'; |
| 1047 | |
| 1048 | if (strlen(ps_name) % vqc.step) { |
| 1049 | rval = -ERANGE; |
| 1050 | goto exit; |
| 1051 | } |
| 1052 | |
| 1053 | rval = si4713_set_rds_ps_name(sdev, ps_name); |
| 1054 | } |
| 1055 | break; |
| 1056 | |
| 1057 | case V4L2_CID_RDS_TX_RADIO_TEXT: { |
| 1058 | char radio_text[MAX_RDS_RADIO_TEXT + 1]; |
| 1059 | |
| 1060 | len = control->size - 1; |
Mauro Carvalho Chehab | dc6b845 | 2011-07-17 00:24:37 -0300 | [diff] [blame] | 1061 | if (len < 0 || len > MAX_RDS_RADIO_TEXT) { |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1062 | rval = -ERANGE; |
| 1063 | goto exit; |
| 1064 | } |
| 1065 | rval = copy_from_user(radio_text, control->string, len); |
Dan Carpenter | aac870a | 2010-06-04 07:34:40 -0300 | [diff] [blame] | 1066 | if (rval) { |
| 1067 | rval = -EFAULT; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1068 | goto exit; |
Dan Carpenter | aac870a | 2010-06-04 07:34:40 -0300 | [diff] [blame] | 1069 | } |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1070 | radio_text[len] = '\0'; |
| 1071 | |
| 1072 | if (strlen(radio_text) % vqc.step) { |
| 1073 | rval = -ERANGE; |
| 1074 | goto exit; |
| 1075 | } |
| 1076 | |
| 1077 | rval = si4713_set_rds_radio_text(sdev, radio_text); |
| 1078 | } |
| 1079 | break; |
| 1080 | |
| 1081 | default: |
| 1082 | rval = -EINVAL; |
| 1083 | break; |
| 1084 | }; |
| 1085 | |
| 1086 | exit: |
| 1087 | return rval; |
| 1088 | } |
| 1089 | |
| 1090 | static int validate_range(struct v4l2_subdev *sd, |
| 1091 | struct v4l2_ext_control *control) |
| 1092 | { |
| 1093 | struct v4l2_queryctrl vqc; |
| 1094 | int rval; |
| 1095 | |
| 1096 | vqc.id = control->id; |
| 1097 | rval = si4713_queryctrl(sd, &vqc); |
| 1098 | if (rval < 0) |
| 1099 | goto exit; |
| 1100 | |
| 1101 | if (control->value < vqc.minimum || control->value > vqc.maximum) |
| 1102 | rval = -ERANGE; |
| 1103 | |
| 1104 | exit: |
| 1105 | return rval; |
| 1106 | } |
| 1107 | |
| 1108 | /* properties which use tx_tune_power*/ |
| 1109 | static int si4713_write_econtrol_tune(struct si4713_device *sdev, |
| 1110 | struct v4l2_ext_control *control) |
| 1111 | { |
| 1112 | s32 rval = 0; |
| 1113 | u8 power, antcap; |
| 1114 | |
| 1115 | rval = validate_range(&sdev->sd, control); |
| 1116 | if (rval < 0) |
| 1117 | goto exit; |
| 1118 | |
| 1119 | mutex_lock(&sdev->mutex); |
| 1120 | |
| 1121 | switch (control->id) { |
| 1122 | case V4L2_CID_TUNE_POWER_LEVEL: |
| 1123 | power = control->value; |
| 1124 | antcap = sdev->antenna_capacitor; |
| 1125 | break; |
| 1126 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: |
| 1127 | power = sdev->power_level; |
| 1128 | antcap = control->value; |
| 1129 | break; |
| 1130 | default: |
| 1131 | rval = -EINVAL; |
| 1132 | goto unlock; |
| 1133 | }; |
| 1134 | |
| 1135 | if (sdev->power_state) |
| 1136 | rval = si4713_tx_tune_power(sdev, power, antcap); |
| 1137 | |
| 1138 | if (rval == 0) { |
| 1139 | sdev->power_level = power; |
| 1140 | sdev->antenna_capacitor = antcap; |
| 1141 | } |
| 1142 | |
| 1143 | unlock: |
| 1144 | mutex_unlock(&sdev->mutex); |
| 1145 | exit: |
| 1146 | return rval; |
| 1147 | } |
| 1148 | |
| 1149 | static int si4713_write_econtrol_integers(struct si4713_device *sdev, |
| 1150 | struct v4l2_ext_control *control) |
| 1151 | { |
| 1152 | s32 rval; |
| 1153 | u32 *shadow = NULL, val = 0; |
| 1154 | s32 bit = 0, mask = 0; |
| 1155 | u16 property = 0; |
| 1156 | int mul = 0; |
| 1157 | unsigned long *table = NULL; |
| 1158 | int size = 0; |
| 1159 | |
| 1160 | rval = validate_range(&sdev->sd, control); |
| 1161 | if (rval < 0) |
| 1162 | goto exit; |
| 1163 | |
| 1164 | rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit, |
| 1165 | &mask, &property, &mul, &table, &size); |
| 1166 | if (rval < 0) |
| 1167 | goto exit; |
| 1168 | |
| 1169 | val = control->value; |
| 1170 | if (mul) { |
| 1171 | val = control->value / mul; |
| 1172 | } else if (table) { |
| 1173 | rval = usecs_to_dev(control->value, table, size); |
| 1174 | if (rval < 0) |
| 1175 | goto exit; |
| 1176 | val = rval; |
| 1177 | rval = 0; |
| 1178 | } |
| 1179 | |
| 1180 | mutex_lock(&sdev->mutex); |
| 1181 | |
| 1182 | if (sdev->power_state) { |
| 1183 | if (mask) { |
| 1184 | rval = si4713_read_property(sdev, property, &val); |
| 1185 | if (rval < 0) |
| 1186 | goto unlock; |
| 1187 | val = set_bits(val, control->value, bit, mask); |
| 1188 | } |
| 1189 | |
| 1190 | rval = si4713_write_property(sdev, property, val); |
| 1191 | if (rval < 0) |
| 1192 | goto unlock; |
| 1193 | if (mask) |
| 1194 | val = control->value; |
| 1195 | } |
| 1196 | |
| 1197 | if (mul) { |
| 1198 | *shadow = val * mul; |
| 1199 | } else if (table) { |
| 1200 | rval = dev_to_usecs(val, table, size); |
| 1201 | if (rval < 0) |
| 1202 | goto unlock; |
| 1203 | *shadow = rval; |
| 1204 | rval = 0; |
| 1205 | } else { |
| 1206 | *shadow = val; |
| 1207 | } |
| 1208 | |
| 1209 | unlock: |
| 1210 | mutex_unlock(&sdev->mutex); |
| 1211 | exit: |
| 1212 | return rval; |
| 1213 | } |
| 1214 | |
| 1215 | static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f); |
| 1216 | static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *); |
| 1217 | /* |
| 1218 | * si4713_setup - Sets the device up with current configuration. |
| 1219 | * @sdev: si4713_device structure for the device we are communicating |
| 1220 | */ |
| 1221 | static int si4713_setup(struct si4713_device *sdev) |
| 1222 | { |
| 1223 | struct v4l2_ext_control ctrl; |
| 1224 | struct v4l2_frequency f; |
| 1225 | struct v4l2_modulator vm; |
| 1226 | struct si4713_device *tmp; |
| 1227 | int rval = 0; |
| 1228 | |
| 1229 | tmp = kmalloc(sizeof(*tmp), GFP_KERNEL); |
| 1230 | if (!tmp) |
| 1231 | return -ENOMEM; |
| 1232 | |
| 1233 | /* Get a local copy to avoid race */ |
| 1234 | mutex_lock(&sdev->mutex); |
| 1235 | memcpy(tmp, sdev, sizeof(*sdev)); |
| 1236 | mutex_unlock(&sdev->mutex); |
| 1237 | |
| 1238 | ctrl.id = V4L2_CID_RDS_TX_PI; |
| 1239 | ctrl.value = tmp->rds_info.pi; |
| 1240 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1241 | |
| 1242 | ctrl.id = V4L2_CID_AUDIO_COMPRESSION_THRESHOLD; |
| 1243 | ctrl.value = tmp->acomp_info.threshold; |
| 1244 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1245 | |
| 1246 | ctrl.id = V4L2_CID_AUDIO_COMPRESSION_GAIN; |
| 1247 | ctrl.value = tmp->acomp_info.gain; |
| 1248 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1249 | |
| 1250 | ctrl.id = V4L2_CID_PILOT_TONE_FREQUENCY; |
| 1251 | ctrl.value = tmp->pilot_info.frequency; |
| 1252 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1253 | |
| 1254 | ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME; |
| 1255 | ctrl.value = tmp->acomp_info.attack_time; |
| 1256 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1257 | |
| 1258 | ctrl.id = V4L2_CID_PILOT_TONE_DEVIATION; |
| 1259 | ctrl.value = tmp->pilot_info.deviation; |
| 1260 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1261 | |
| 1262 | ctrl.id = V4L2_CID_AUDIO_LIMITER_DEVIATION; |
| 1263 | ctrl.value = tmp->limiter_info.deviation; |
| 1264 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1265 | |
| 1266 | ctrl.id = V4L2_CID_RDS_TX_DEVIATION; |
| 1267 | ctrl.value = tmp->rds_info.deviation; |
| 1268 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1269 | |
| 1270 | ctrl.id = V4L2_CID_RDS_TX_PTY; |
| 1271 | ctrl.value = tmp->rds_info.pty; |
| 1272 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1273 | |
| 1274 | ctrl.id = V4L2_CID_AUDIO_LIMITER_ENABLED; |
| 1275 | ctrl.value = tmp->limiter_info.enabled; |
| 1276 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1277 | |
| 1278 | ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ENABLED; |
| 1279 | ctrl.value = tmp->acomp_info.enabled; |
| 1280 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1281 | |
| 1282 | ctrl.id = V4L2_CID_PILOT_TONE_ENABLED; |
| 1283 | ctrl.value = tmp->pilot_info.enabled; |
| 1284 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1285 | |
| 1286 | ctrl.id = V4L2_CID_AUDIO_LIMITER_RELEASE_TIME; |
| 1287 | ctrl.value = tmp->limiter_info.release_time; |
| 1288 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1289 | |
| 1290 | ctrl.id = V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME; |
| 1291 | ctrl.value = tmp->acomp_info.release_time; |
| 1292 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1293 | |
| 1294 | ctrl.id = V4L2_CID_TUNE_PREEMPHASIS; |
| 1295 | ctrl.value = tmp->preemphasis; |
| 1296 | rval |= si4713_write_econtrol_integers(sdev, &ctrl); |
| 1297 | |
| 1298 | ctrl.id = V4L2_CID_RDS_TX_PS_NAME; |
| 1299 | rval |= si4713_set_rds_ps_name(sdev, tmp->rds_info.ps_name); |
| 1300 | |
| 1301 | ctrl.id = V4L2_CID_RDS_TX_RADIO_TEXT; |
| 1302 | rval |= si4713_set_rds_radio_text(sdev, tmp->rds_info.radio_text); |
| 1303 | |
| 1304 | /* Device procedure needs to set frequency first */ |
| 1305 | f.frequency = tmp->frequency ? tmp->frequency : DEFAULT_FREQUENCY; |
| 1306 | f.frequency = si4713_to_v4l2(f.frequency); |
| 1307 | rval |= si4713_s_frequency(&sdev->sd, &f); |
| 1308 | |
| 1309 | ctrl.id = V4L2_CID_TUNE_POWER_LEVEL; |
| 1310 | ctrl.value = tmp->power_level; |
| 1311 | rval |= si4713_write_econtrol_tune(sdev, &ctrl); |
| 1312 | |
| 1313 | ctrl.id = V4L2_CID_TUNE_ANTENNA_CAPACITOR; |
| 1314 | ctrl.value = tmp->antenna_capacitor; |
| 1315 | rval |= si4713_write_econtrol_tune(sdev, &ctrl); |
| 1316 | |
| 1317 | vm.index = 0; |
| 1318 | if (tmp->stereo) |
| 1319 | vm.txsubchans = V4L2_TUNER_SUB_STEREO; |
| 1320 | else |
| 1321 | vm.txsubchans = V4L2_TUNER_SUB_MONO; |
| 1322 | if (tmp->rds_info.enabled) |
| 1323 | vm.txsubchans |= V4L2_TUNER_SUB_RDS; |
| 1324 | si4713_s_modulator(&sdev->sd, &vm); |
| 1325 | |
| 1326 | kfree(tmp); |
| 1327 | |
| 1328 | return rval; |
| 1329 | } |
| 1330 | |
| 1331 | /* |
| 1332 | * si4713_initialize - Sets the device up with default configuration. |
| 1333 | * @sdev: si4713_device structure for the device we are communicating |
| 1334 | */ |
| 1335 | static int si4713_initialize(struct si4713_device *sdev) |
| 1336 | { |
| 1337 | int rval; |
| 1338 | |
| 1339 | rval = si4713_set_power_state(sdev, POWER_ON); |
| 1340 | if (rval < 0) |
| 1341 | goto exit; |
| 1342 | |
| 1343 | rval = si4713_checkrev(sdev); |
| 1344 | if (rval < 0) |
| 1345 | goto exit; |
| 1346 | |
| 1347 | rval = si4713_set_power_state(sdev, POWER_OFF); |
| 1348 | if (rval < 0) |
| 1349 | goto exit; |
| 1350 | |
| 1351 | mutex_lock(&sdev->mutex); |
| 1352 | |
| 1353 | sdev->rds_info.pi = DEFAULT_RDS_PI; |
| 1354 | sdev->rds_info.pty = DEFAULT_RDS_PTY; |
| 1355 | sdev->rds_info.deviation = DEFAULT_RDS_DEVIATION; |
| 1356 | strlcpy(sdev->rds_info.ps_name, DEFAULT_RDS_PS_NAME, MAX_RDS_PS_NAME); |
| 1357 | strlcpy(sdev->rds_info.radio_text, DEFAULT_RDS_RADIO_TEXT, |
| 1358 | MAX_RDS_RADIO_TEXT); |
| 1359 | sdev->rds_info.enabled = 1; |
| 1360 | |
| 1361 | sdev->limiter_info.release_time = DEFAULT_LIMITER_RTIME; |
| 1362 | sdev->limiter_info.deviation = DEFAULT_LIMITER_DEV; |
| 1363 | sdev->limiter_info.enabled = 1; |
| 1364 | |
| 1365 | sdev->pilot_info.deviation = DEFAULT_PILOT_DEVIATION; |
| 1366 | sdev->pilot_info.frequency = DEFAULT_PILOT_FREQUENCY; |
| 1367 | sdev->pilot_info.enabled = 1; |
| 1368 | |
| 1369 | sdev->acomp_info.release_time = DEFAULT_ACOMP_RTIME; |
| 1370 | sdev->acomp_info.attack_time = DEFAULT_ACOMP_ATIME; |
| 1371 | sdev->acomp_info.threshold = DEFAULT_ACOMP_THRESHOLD; |
| 1372 | sdev->acomp_info.gain = DEFAULT_ACOMP_GAIN; |
| 1373 | sdev->acomp_info.enabled = 1; |
| 1374 | |
| 1375 | sdev->frequency = DEFAULT_FREQUENCY; |
| 1376 | sdev->preemphasis = DEFAULT_PREEMPHASIS; |
| 1377 | sdev->mute = DEFAULT_MUTE; |
| 1378 | sdev->power_level = DEFAULT_POWER_LEVEL; |
| 1379 | sdev->antenna_capacitor = 0; |
| 1380 | sdev->stereo = 1; |
| 1381 | sdev->tune_rnl = DEFAULT_TUNE_RNL; |
| 1382 | |
| 1383 | mutex_unlock(&sdev->mutex); |
| 1384 | |
| 1385 | exit: |
| 1386 | return rval; |
| 1387 | } |
| 1388 | |
| 1389 | /* read string property */ |
| 1390 | static int si4713_read_econtrol_string(struct si4713_device *sdev, |
| 1391 | struct v4l2_ext_control *control) |
| 1392 | { |
| 1393 | s32 rval = 0; |
| 1394 | |
| 1395 | switch (control->id) { |
| 1396 | case V4L2_CID_RDS_TX_PS_NAME: |
| 1397 | if (strlen(sdev->rds_info.ps_name) + 1 > control->size) { |
| 1398 | control->size = MAX_RDS_PS_NAME + 1; |
| 1399 | rval = -ENOSPC; |
| 1400 | goto exit; |
| 1401 | } |
| 1402 | rval = copy_to_user(control->string, sdev->rds_info.ps_name, |
| 1403 | strlen(sdev->rds_info.ps_name) + 1); |
Dan Carpenter | aac870a | 2010-06-04 07:34:40 -0300 | [diff] [blame] | 1404 | if (rval) |
| 1405 | rval = -EFAULT; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1406 | break; |
| 1407 | |
| 1408 | case V4L2_CID_RDS_TX_RADIO_TEXT: |
| 1409 | if (strlen(sdev->rds_info.radio_text) + 1 > control->size) { |
| 1410 | control->size = MAX_RDS_RADIO_TEXT + 1; |
| 1411 | rval = -ENOSPC; |
| 1412 | goto exit; |
| 1413 | } |
| 1414 | rval = copy_to_user(control->string, sdev->rds_info.radio_text, |
| 1415 | strlen(sdev->rds_info.radio_text) + 1); |
Dan Carpenter | aac870a | 2010-06-04 07:34:40 -0300 | [diff] [blame] | 1416 | if (rval) |
| 1417 | rval = -EFAULT; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1418 | break; |
| 1419 | |
| 1420 | default: |
| 1421 | rval = -EINVAL; |
| 1422 | break; |
| 1423 | }; |
| 1424 | |
| 1425 | exit: |
| 1426 | return rval; |
| 1427 | } |
| 1428 | |
| 1429 | /* |
| 1430 | * si4713_update_tune_status - update properties from tx_tune_status |
| 1431 | * command. Must be called with sdev->mutex held. |
| 1432 | * @sdev: si4713_device structure for the device we are communicating |
| 1433 | */ |
| 1434 | static int si4713_update_tune_status(struct si4713_device *sdev) |
| 1435 | { |
| 1436 | int rval; |
| 1437 | u16 f = 0; |
| 1438 | u8 p = 0, a = 0, n = 0; |
| 1439 | |
| 1440 | rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); |
| 1441 | |
| 1442 | if (rval < 0) |
| 1443 | goto exit; |
| 1444 | |
| 1445 | sdev->power_level = p; |
| 1446 | sdev->antenna_capacitor = a; |
| 1447 | sdev->tune_rnl = n; |
| 1448 | |
| 1449 | exit: |
| 1450 | return rval; |
| 1451 | } |
| 1452 | |
| 1453 | /* properties which use tx_tune_status */ |
| 1454 | static int si4713_read_econtrol_tune(struct si4713_device *sdev, |
| 1455 | struct v4l2_ext_control *control) |
| 1456 | { |
| 1457 | s32 rval = 0; |
| 1458 | |
| 1459 | mutex_lock(&sdev->mutex); |
| 1460 | |
| 1461 | if (sdev->power_state) { |
| 1462 | rval = si4713_update_tune_status(sdev); |
| 1463 | if (rval < 0) |
| 1464 | goto unlock; |
| 1465 | } |
| 1466 | |
| 1467 | switch (control->id) { |
| 1468 | case V4L2_CID_TUNE_POWER_LEVEL: |
| 1469 | control->value = sdev->power_level; |
| 1470 | break; |
| 1471 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: |
| 1472 | control->value = sdev->antenna_capacitor; |
| 1473 | break; |
| 1474 | default: |
| 1475 | rval = -EINVAL; |
| 1476 | }; |
| 1477 | |
| 1478 | unlock: |
| 1479 | mutex_unlock(&sdev->mutex); |
| 1480 | return rval; |
| 1481 | } |
| 1482 | |
| 1483 | static int si4713_read_econtrol_integers(struct si4713_device *sdev, |
| 1484 | struct v4l2_ext_control *control) |
| 1485 | { |
| 1486 | s32 rval; |
| 1487 | u32 *shadow = NULL, val = 0; |
| 1488 | s32 bit = 0, mask = 0; |
| 1489 | u16 property = 0; |
| 1490 | int mul = 0; |
| 1491 | unsigned long *table = NULL; |
| 1492 | int size = 0; |
| 1493 | |
| 1494 | rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit, |
| 1495 | &mask, &property, &mul, &table, &size); |
| 1496 | if (rval < 0) |
| 1497 | goto exit; |
| 1498 | |
| 1499 | mutex_lock(&sdev->mutex); |
| 1500 | |
| 1501 | if (sdev->power_state) { |
| 1502 | rval = si4713_read_property(sdev, property, &val); |
| 1503 | if (rval < 0) |
| 1504 | goto unlock; |
| 1505 | |
| 1506 | /* Keep negative values for threshold */ |
| 1507 | if (control->id == V4L2_CID_AUDIO_COMPRESSION_THRESHOLD) |
| 1508 | *shadow = (s16)val; |
| 1509 | else if (mask) |
| 1510 | *shadow = get_status_bit(val, bit, mask); |
| 1511 | else if (mul) |
| 1512 | *shadow = val * mul; |
| 1513 | else |
| 1514 | *shadow = dev_to_usecs(val, table, size); |
| 1515 | } |
| 1516 | |
| 1517 | control->value = *shadow; |
| 1518 | |
| 1519 | unlock: |
| 1520 | mutex_unlock(&sdev->mutex); |
| 1521 | exit: |
| 1522 | return rval; |
| 1523 | } |
| 1524 | |
| 1525 | /* |
| 1526 | * Video4Linux Subdev Interface |
| 1527 | */ |
| 1528 | /* si4713_s_ext_ctrls - set extended controls value */ |
| 1529 | static int si4713_s_ext_ctrls(struct v4l2_subdev *sd, |
| 1530 | struct v4l2_ext_controls *ctrls) |
| 1531 | { |
| 1532 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1533 | int i; |
| 1534 | |
| 1535 | if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX) |
| 1536 | return -EINVAL; |
| 1537 | |
| 1538 | for (i = 0; i < ctrls->count; i++) { |
| 1539 | int err; |
| 1540 | |
| 1541 | switch ((ctrls->controls + i)->id) { |
| 1542 | case V4L2_CID_RDS_TX_PS_NAME: |
| 1543 | case V4L2_CID_RDS_TX_RADIO_TEXT: |
| 1544 | err = si4713_write_econtrol_string(sdev, |
| 1545 | ctrls->controls + i); |
| 1546 | break; |
| 1547 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: |
| 1548 | case V4L2_CID_TUNE_POWER_LEVEL: |
| 1549 | err = si4713_write_econtrol_tune(sdev, |
| 1550 | ctrls->controls + i); |
| 1551 | break; |
| 1552 | default: |
| 1553 | err = si4713_write_econtrol_integers(sdev, |
| 1554 | ctrls->controls + i); |
| 1555 | } |
| 1556 | |
| 1557 | if (err < 0) { |
| 1558 | ctrls->error_idx = i; |
| 1559 | return err; |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | return 0; |
| 1564 | } |
| 1565 | |
| 1566 | /* si4713_g_ext_ctrls - get extended controls value */ |
| 1567 | static int si4713_g_ext_ctrls(struct v4l2_subdev *sd, |
| 1568 | struct v4l2_ext_controls *ctrls) |
| 1569 | { |
| 1570 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1571 | int i; |
| 1572 | |
| 1573 | if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX) |
| 1574 | return -EINVAL; |
| 1575 | |
| 1576 | for (i = 0; i < ctrls->count; i++) { |
| 1577 | int err; |
| 1578 | |
| 1579 | switch ((ctrls->controls + i)->id) { |
| 1580 | case V4L2_CID_RDS_TX_PS_NAME: |
| 1581 | case V4L2_CID_RDS_TX_RADIO_TEXT: |
| 1582 | err = si4713_read_econtrol_string(sdev, |
| 1583 | ctrls->controls + i); |
| 1584 | break; |
| 1585 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: |
| 1586 | case V4L2_CID_TUNE_POWER_LEVEL: |
| 1587 | err = si4713_read_econtrol_tune(sdev, |
| 1588 | ctrls->controls + i); |
| 1589 | break; |
| 1590 | default: |
| 1591 | err = si4713_read_econtrol_integers(sdev, |
| 1592 | ctrls->controls + i); |
| 1593 | } |
| 1594 | |
| 1595 | if (err < 0) { |
| 1596 | ctrls->error_idx = i; |
| 1597 | return err; |
| 1598 | } |
| 1599 | } |
| 1600 | |
| 1601 | return 0; |
| 1602 | } |
| 1603 | |
| 1604 | /* si4713_queryctrl - enumerate control items */ |
| 1605 | static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) |
| 1606 | { |
| 1607 | int rval = 0; |
| 1608 | |
| 1609 | switch (qc->id) { |
| 1610 | /* User class controls */ |
| 1611 | case V4L2_CID_AUDIO_MUTE: |
| 1612 | rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, DEFAULT_MUTE); |
| 1613 | break; |
| 1614 | /* FM_TX class controls */ |
| 1615 | case V4L2_CID_RDS_TX_PI: |
| 1616 | rval = v4l2_ctrl_query_fill(qc, 0, 0xFFFF, 1, DEFAULT_RDS_PI); |
| 1617 | break; |
| 1618 | case V4L2_CID_RDS_TX_PTY: |
| 1619 | rval = v4l2_ctrl_query_fill(qc, 0, 31, 1, DEFAULT_RDS_PTY); |
| 1620 | break; |
| 1621 | case V4L2_CID_RDS_TX_DEVIATION: |
| 1622 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_DEVIATION, |
| 1623 | 10, DEFAULT_RDS_DEVIATION); |
| 1624 | break; |
| 1625 | case V4L2_CID_RDS_TX_PS_NAME: |
| 1626 | /* |
| 1627 | * Report step as 8. From RDS spec, psname |
| 1628 | * should be 8. But there are receivers which scroll strings |
| 1629 | * sized as 8xN. |
| 1630 | */ |
| 1631 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_PS_NAME, 8, 0); |
| 1632 | break; |
| 1633 | case V4L2_CID_RDS_TX_RADIO_TEXT: |
| 1634 | /* |
| 1635 | * Report step as 32 (2A block). From RDS spec, |
| 1636 | * radio text should be 32 for 2A block. But there are receivers |
| 1637 | * which scroll strings sized as 32xN. Setting default to 32. |
| 1638 | */ |
| 1639 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_RADIO_TEXT, 32, 0); |
| 1640 | break; |
| 1641 | |
| 1642 | case V4L2_CID_AUDIO_LIMITER_ENABLED: |
| 1643 | rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); |
| 1644 | break; |
| 1645 | case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: |
| 1646 | rval = v4l2_ctrl_query_fill(qc, 250, MAX_LIMITER_RELEASE_TIME, |
| 1647 | 50, DEFAULT_LIMITER_RTIME); |
| 1648 | break; |
| 1649 | case V4L2_CID_AUDIO_LIMITER_DEVIATION: |
| 1650 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_LIMITER_DEVIATION, |
| 1651 | 10, DEFAULT_LIMITER_DEV); |
| 1652 | break; |
| 1653 | |
| 1654 | case V4L2_CID_AUDIO_COMPRESSION_ENABLED: |
| 1655 | rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); |
| 1656 | break; |
| 1657 | case V4L2_CID_AUDIO_COMPRESSION_GAIN: |
| 1658 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_GAIN, 1, |
| 1659 | DEFAULT_ACOMP_GAIN); |
| 1660 | break; |
| 1661 | case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: |
| 1662 | rval = v4l2_ctrl_query_fill(qc, MIN_ACOMP_THRESHOLD, |
| 1663 | MAX_ACOMP_THRESHOLD, 1, |
| 1664 | DEFAULT_ACOMP_THRESHOLD); |
| 1665 | break; |
| 1666 | case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: |
| 1667 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_ATTACK_TIME, |
| 1668 | 500, DEFAULT_ACOMP_ATIME); |
| 1669 | break; |
| 1670 | case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: |
| 1671 | rval = v4l2_ctrl_query_fill(qc, 100000, MAX_ACOMP_RELEASE_TIME, |
| 1672 | 100000, DEFAULT_ACOMP_RTIME); |
| 1673 | break; |
| 1674 | |
| 1675 | case V4L2_CID_PILOT_TONE_ENABLED: |
| 1676 | rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); |
| 1677 | break; |
| 1678 | case V4L2_CID_PILOT_TONE_DEVIATION: |
| 1679 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_DEVIATION, |
| 1680 | 10, DEFAULT_PILOT_DEVIATION); |
| 1681 | break; |
| 1682 | case V4L2_CID_PILOT_TONE_FREQUENCY: |
| 1683 | rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_FREQUENCY, |
| 1684 | 1, DEFAULT_PILOT_FREQUENCY); |
| 1685 | break; |
| 1686 | |
| 1687 | case V4L2_CID_TUNE_PREEMPHASIS: |
| 1688 | rval = v4l2_ctrl_query_fill(qc, V4L2_PREEMPHASIS_DISABLED, |
| 1689 | V4L2_PREEMPHASIS_75_uS, 1, |
| 1690 | V4L2_PREEMPHASIS_50_uS); |
| 1691 | break; |
| 1692 | case V4L2_CID_TUNE_POWER_LEVEL: |
| 1693 | rval = v4l2_ctrl_query_fill(qc, 0, 120, 1, DEFAULT_POWER_LEVEL); |
| 1694 | break; |
| 1695 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: |
| 1696 | rval = v4l2_ctrl_query_fill(qc, 0, 191, 1, 0); |
| 1697 | break; |
| 1698 | default: |
| 1699 | rval = -EINVAL; |
| 1700 | break; |
| 1701 | }; |
| 1702 | |
| 1703 | return rval; |
| 1704 | } |
| 1705 | |
| 1706 | /* si4713_g_ctrl - get the value of a control */ |
| 1707 | static int si4713_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 1708 | { |
| 1709 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1710 | int rval = 0; |
| 1711 | |
| 1712 | if (!sdev) |
| 1713 | return -ENODEV; |
| 1714 | |
| 1715 | mutex_lock(&sdev->mutex); |
| 1716 | |
| 1717 | if (sdev->power_state) { |
| 1718 | rval = si4713_read_property(sdev, SI4713_TX_LINE_INPUT_MUTE, |
| 1719 | &sdev->mute); |
| 1720 | |
| 1721 | if (rval < 0) |
| 1722 | goto unlock; |
| 1723 | } |
| 1724 | |
| 1725 | switch (ctrl->id) { |
| 1726 | case V4L2_CID_AUDIO_MUTE: |
| 1727 | ctrl->value = get_mute(sdev->mute); |
| 1728 | break; |
| 1729 | } |
| 1730 | |
| 1731 | unlock: |
| 1732 | mutex_unlock(&sdev->mutex); |
| 1733 | return rval; |
| 1734 | } |
| 1735 | |
| 1736 | /* si4713_s_ctrl - set the value of a control */ |
| 1737 | static int si4713_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
| 1738 | { |
| 1739 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1740 | int rval = 0; |
| 1741 | |
| 1742 | if (!sdev) |
| 1743 | return -ENODEV; |
| 1744 | |
| 1745 | switch (ctrl->id) { |
| 1746 | case V4L2_CID_AUDIO_MUTE: |
| 1747 | if (ctrl->value) { |
| 1748 | rval = si4713_set_mute(sdev, ctrl->value); |
| 1749 | if (rval < 0) |
| 1750 | goto exit; |
| 1751 | |
| 1752 | rval = si4713_set_power_state(sdev, POWER_DOWN); |
| 1753 | } else { |
| 1754 | rval = si4713_set_power_state(sdev, POWER_UP); |
| 1755 | if (rval < 0) |
| 1756 | goto exit; |
| 1757 | |
| 1758 | rval = si4713_setup(sdev); |
| 1759 | if (rval < 0) |
| 1760 | goto exit; |
| 1761 | |
| 1762 | rval = si4713_set_mute(sdev, ctrl->value); |
| 1763 | } |
| 1764 | break; |
| 1765 | } |
| 1766 | |
| 1767 | exit: |
| 1768 | return rval; |
| 1769 | } |
| 1770 | |
| 1771 | /* si4713_ioctl - deal with private ioctls (only rnl for now) */ |
| 1772 | long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) |
| 1773 | { |
| 1774 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1775 | struct si4713_rnl *rnl = arg; |
| 1776 | u16 frequency; |
| 1777 | int rval = 0; |
| 1778 | |
| 1779 | if (!arg) |
| 1780 | return -EINVAL; |
| 1781 | |
| 1782 | mutex_lock(&sdev->mutex); |
| 1783 | switch (cmd) { |
| 1784 | case SI4713_IOC_MEASURE_RNL: |
| 1785 | frequency = v4l2_to_si4713(rnl->frequency); |
| 1786 | |
| 1787 | if (sdev->power_state) { |
| 1788 | /* Set desired measurement frequency */ |
| 1789 | rval = si4713_tx_tune_measure(sdev, frequency, 0); |
| 1790 | if (rval < 0) |
| 1791 | goto unlock; |
| 1792 | /* get results from tune status */ |
| 1793 | rval = si4713_update_tune_status(sdev); |
| 1794 | if (rval < 0) |
| 1795 | goto unlock; |
| 1796 | } |
| 1797 | rnl->rnl = sdev->tune_rnl; |
| 1798 | break; |
| 1799 | |
| 1800 | default: |
| 1801 | /* nothing */ |
| 1802 | rval = -ENOIOCTLCMD; |
| 1803 | } |
| 1804 | |
| 1805 | unlock: |
| 1806 | mutex_unlock(&sdev->mutex); |
| 1807 | return rval; |
| 1808 | } |
| 1809 | |
| 1810 | static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = { |
| 1811 | .queryctrl = si4713_queryctrl, |
| 1812 | .g_ext_ctrls = si4713_g_ext_ctrls, |
| 1813 | .s_ext_ctrls = si4713_s_ext_ctrls, |
| 1814 | .g_ctrl = si4713_g_ctrl, |
| 1815 | .s_ctrl = si4713_s_ctrl, |
| 1816 | .ioctl = si4713_ioctl, |
| 1817 | }; |
| 1818 | |
| 1819 | /* si4713_g_modulator - get modulator attributes */ |
| 1820 | static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm) |
| 1821 | { |
| 1822 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1823 | int rval = 0; |
| 1824 | |
| 1825 | if (!sdev) { |
| 1826 | rval = -ENODEV; |
| 1827 | goto exit; |
| 1828 | } |
| 1829 | |
| 1830 | if (vm->index > 0) { |
| 1831 | rval = -EINVAL; |
| 1832 | goto exit; |
| 1833 | } |
| 1834 | |
| 1835 | strncpy(vm->name, "FM Modulator", 32); |
| 1836 | vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW | |
Matti Aaltonen | cb0ed22 | 2010-10-18 06:54:14 -0300 | [diff] [blame] | 1837 | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_CONTROLS; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1838 | |
| 1839 | /* Report current frequency range limits */ |
| 1840 | vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW); |
| 1841 | vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH); |
| 1842 | |
| 1843 | mutex_lock(&sdev->mutex); |
| 1844 | |
| 1845 | if (sdev->power_state) { |
| 1846 | u32 comp_en = 0; |
| 1847 | |
| 1848 | rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE, |
| 1849 | &comp_en); |
| 1850 | if (rval < 0) |
| 1851 | goto unlock; |
| 1852 | |
| 1853 | sdev->stereo = get_status_bit(comp_en, 1, 1 << 1); |
| 1854 | sdev->rds_info.enabled = get_status_bit(comp_en, 2, 1 << 2); |
| 1855 | } |
| 1856 | |
| 1857 | /* Report current audio mode: mono or stereo */ |
| 1858 | if (sdev->stereo) |
| 1859 | vm->txsubchans = V4L2_TUNER_SUB_STEREO; |
| 1860 | else |
| 1861 | vm->txsubchans = V4L2_TUNER_SUB_MONO; |
| 1862 | |
| 1863 | /* Report rds feature status */ |
| 1864 | if (sdev->rds_info.enabled) |
| 1865 | vm->txsubchans |= V4L2_TUNER_SUB_RDS; |
| 1866 | else |
| 1867 | vm->txsubchans &= ~V4L2_TUNER_SUB_RDS; |
| 1868 | |
| 1869 | unlock: |
| 1870 | mutex_unlock(&sdev->mutex); |
| 1871 | exit: |
| 1872 | return rval; |
| 1873 | } |
| 1874 | |
| 1875 | /* si4713_s_modulator - set modulator attributes */ |
| 1876 | static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm) |
| 1877 | { |
| 1878 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1879 | int rval = 0; |
| 1880 | u16 stereo, rds; |
| 1881 | u32 p; |
| 1882 | |
Hans Verkuil | a65f315 | 2009-08-31 17:21:04 -0300 | [diff] [blame] | 1883 | if (!sdev) |
| 1884 | return -ENODEV; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1885 | |
Hans Verkuil | a65f315 | 2009-08-31 17:21:04 -0300 | [diff] [blame] | 1886 | if (vm->index > 0) |
| 1887 | return -EINVAL; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1888 | |
| 1889 | /* Set audio mode: mono or stereo */ |
| 1890 | if (vm->txsubchans & V4L2_TUNER_SUB_STEREO) |
| 1891 | stereo = 1; |
| 1892 | else if (vm->txsubchans & V4L2_TUNER_SUB_MONO) |
| 1893 | stereo = 0; |
| 1894 | else |
Hans Verkuil | a65f315 | 2009-08-31 17:21:04 -0300 | [diff] [blame] | 1895 | return -EINVAL; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1896 | |
| 1897 | rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS); |
| 1898 | |
| 1899 | mutex_lock(&sdev->mutex); |
| 1900 | |
| 1901 | if (sdev->power_state) { |
| 1902 | rval = si4713_read_property(sdev, |
| 1903 | SI4713_TX_COMPONENT_ENABLE, &p); |
| 1904 | if (rval < 0) |
| 1905 | goto unlock; |
| 1906 | |
| 1907 | p = set_bits(p, stereo, 1, 1 << 1); |
| 1908 | p = set_bits(p, rds, 2, 1 << 2); |
| 1909 | |
| 1910 | rval = si4713_write_property(sdev, |
| 1911 | SI4713_TX_COMPONENT_ENABLE, p); |
| 1912 | if (rval < 0) |
| 1913 | goto unlock; |
| 1914 | } |
| 1915 | |
| 1916 | sdev->stereo = stereo; |
| 1917 | sdev->rds_info.enabled = rds; |
| 1918 | |
| 1919 | unlock: |
| 1920 | mutex_unlock(&sdev->mutex); |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 1921 | return rval; |
| 1922 | } |
| 1923 | |
| 1924 | /* si4713_g_frequency - get tuner or modulator radio frequency */ |
| 1925 | static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) |
| 1926 | { |
| 1927 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1928 | int rval = 0; |
| 1929 | |
| 1930 | f->type = V4L2_TUNER_RADIO; |
| 1931 | |
| 1932 | mutex_lock(&sdev->mutex); |
| 1933 | |
| 1934 | if (sdev->power_state) { |
| 1935 | u16 freq; |
| 1936 | u8 p, a, n; |
| 1937 | |
| 1938 | rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n); |
| 1939 | if (rval < 0) |
| 1940 | goto unlock; |
| 1941 | |
| 1942 | sdev->frequency = freq; |
| 1943 | } |
| 1944 | |
| 1945 | f->frequency = si4713_to_v4l2(sdev->frequency); |
| 1946 | |
| 1947 | unlock: |
| 1948 | mutex_unlock(&sdev->mutex); |
| 1949 | return rval; |
| 1950 | } |
| 1951 | |
| 1952 | /* si4713_s_frequency - set tuner or modulator radio frequency */ |
| 1953 | static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) |
| 1954 | { |
| 1955 | struct si4713_device *sdev = to_si4713_device(sd); |
| 1956 | int rval = 0; |
| 1957 | u16 frequency = v4l2_to_si4713(f->frequency); |
| 1958 | |
| 1959 | /* Check frequency range */ |
| 1960 | if (frequency < FREQ_RANGE_LOW || frequency > FREQ_RANGE_HIGH) |
| 1961 | return -EDOM; |
| 1962 | |
| 1963 | mutex_lock(&sdev->mutex); |
| 1964 | |
| 1965 | if (sdev->power_state) { |
| 1966 | rval = si4713_tx_tune_freq(sdev, frequency); |
| 1967 | if (rval < 0) |
| 1968 | goto unlock; |
| 1969 | frequency = rval; |
| 1970 | rval = 0; |
| 1971 | } |
| 1972 | sdev->frequency = frequency; |
| 1973 | f->frequency = si4713_to_v4l2(frequency); |
| 1974 | |
| 1975 | unlock: |
| 1976 | mutex_unlock(&sdev->mutex); |
| 1977 | return rval; |
| 1978 | } |
| 1979 | |
| 1980 | static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = { |
| 1981 | .g_frequency = si4713_g_frequency, |
| 1982 | .s_frequency = si4713_s_frequency, |
| 1983 | .g_modulator = si4713_g_modulator, |
| 1984 | .s_modulator = si4713_s_modulator, |
| 1985 | }; |
| 1986 | |
| 1987 | static const struct v4l2_subdev_ops si4713_subdev_ops = { |
| 1988 | .core = &si4713_subdev_core_ops, |
| 1989 | .tuner = &si4713_subdev_tuner_ops, |
| 1990 | }; |
| 1991 | |
| 1992 | /* |
| 1993 | * I2C driver interface |
| 1994 | */ |
| 1995 | /* si4713_probe - probe for the device */ |
| 1996 | static int si4713_probe(struct i2c_client *client, |
| 1997 | const struct i2c_device_id *id) |
| 1998 | { |
| 1999 | struct si4713_device *sdev; |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 2000 | struct si4713_platform_data *pdata = client->dev.platform_data; |
| 2001 | int rval, i; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 2002 | |
| 2003 | sdev = kzalloc(sizeof *sdev, GFP_KERNEL); |
| 2004 | if (!sdev) { |
| 2005 | dev_err(&client->dev, "Failed to alloc video device.\n"); |
| 2006 | rval = -ENOMEM; |
| 2007 | goto exit; |
| 2008 | } |
| 2009 | |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 2010 | sdev->gpio_reset = -1; |
| 2011 | if (pdata && gpio_is_valid(pdata->gpio_reset)) { |
| 2012 | rval = gpio_request(pdata->gpio_reset, "si4713 reset"); |
| 2013 | if (rval) { |
| 2014 | dev_err(&client->dev, |
| 2015 | "Failed to request gpio: %d\n", rval); |
| 2016 | goto free_sdev; |
| 2017 | } |
| 2018 | sdev->gpio_reset = pdata->gpio_reset; |
| 2019 | gpio_direction_output(sdev->gpio_reset, 0); |
| 2020 | } |
| 2021 | |
| 2022 | for (i = 0; i < ARRAY_SIZE(sdev->supplies); i++) |
| 2023 | sdev->supplies[i].supply = si4713_supply_names[i]; |
| 2024 | |
| 2025 | rval = regulator_bulk_get(&client->dev, ARRAY_SIZE(sdev->supplies), |
| 2026 | sdev->supplies); |
| 2027 | if (rval) { |
| 2028 | dev_err(&client->dev, "Cannot get regulators: %d\n", rval); |
| 2029 | goto free_gpio; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 2030 | } |
| 2031 | |
| 2032 | v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops); |
| 2033 | |
| 2034 | mutex_init(&sdev->mutex); |
| 2035 | init_completion(&sdev->work); |
| 2036 | |
| 2037 | if (client->irq) { |
| 2038 | rval = request_irq(client->irq, |
| 2039 | si4713_handler, IRQF_TRIGGER_FALLING | IRQF_DISABLED, |
| 2040 | client->name, sdev); |
| 2041 | if (rval < 0) { |
| 2042 | v4l2_err(&sdev->sd, "Could not request IRQ\n"); |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 2043 | goto put_reg; |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 2044 | } |
| 2045 | v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n"); |
| 2046 | } else { |
| 2047 | v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n"); |
| 2048 | } |
| 2049 | |
| 2050 | rval = si4713_initialize(sdev); |
| 2051 | if (rval < 0) { |
| 2052 | v4l2_err(&sdev->sd, "Failed to probe device information.\n"); |
| 2053 | goto free_irq; |
| 2054 | } |
| 2055 | |
| 2056 | return 0; |
| 2057 | |
| 2058 | free_irq: |
| 2059 | if (client->irq) |
| 2060 | free_irq(client->irq, sdev); |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 2061 | put_reg: |
| 2062 | regulator_bulk_free(ARRAY_SIZE(sdev->supplies), sdev->supplies); |
| 2063 | free_gpio: |
| 2064 | if (gpio_is_valid(sdev->gpio_reset)) |
| 2065 | gpio_free(sdev->gpio_reset); |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 2066 | free_sdev: |
| 2067 | kfree(sdev); |
| 2068 | exit: |
| 2069 | return rval; |
| 2070 | } |
| 2071 | |
| 2072 | /* si4713_remove - remove the device */ |
| 2073 | static int si4713_remove(struct i2c_client *client) |
| 2074 | { |
| 2075 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
| 2076 | struct si4713_device *sdev = to_si4713_device(sd); |
| 2077 | |
| 2078 | if (sdev->power_state) |
| 2079 | si4713_set_power_state(sdev, POWER_DOWN); |
| 2080 | |
| 2081 | if (client->irq > 0) |
| 2082 | free_irq(client->irq, sdev); |
| 2083 | |
| 2084 | v4l2_device_unregister_subdev(sd); |
Jarkko Nikula | 00df055 | 2010-10-29 11:31:39 -0300 | [diff] [blame] | 2085 | regulator_bulk_free(ARRAY_SIZE(sdev->supplies), sdev->supplies); |
| 2086 | if (gpio_is_valid(sdev->gpio_reset)) |
| 2087 | gpio_free(sdev->gpio_reset); |
Eduardo Valentin | 02bee89 | 2009-08-08 08:46:53 -0300 | [diff] [blame] | 2088 | kfree(sdev); |
| 2089 | |
| 2090 | return 0; |
| 2091 | } |
| 2092 | |
| 2093 | /* si4713_i2c_driver - i2c driver interface */ |
| 2094 | static const struct i2c_device_id si4713_id[] = { |
| 2095 | { "si4713" , 0 }, |
| 2096 | { }, |
| 2097 | }; |
| 2098 | MODULE_DEVICE_TABLE(i2c, si4713_id); |
| 2099 | |
| 2100 | static struct i2c_driver si4713_i2c_driver = { |
| 2101 | .driver = { |
| 2102 | .name = "si4713", |
| 2103 | }, |
| 2104 | .probe = si4713_probe, |
| 2105 | .remove = si4713_remove, |
| 2106 | .id_table = si4713_id, |
| 2107 | }; |
| 2108 | |
Axel Lin | c6e8d86 | 2012-02-12 06:56:32 -0300 | [diff] [blame] | 2109 | module_i2c_driver(si4713_i2c_driver); |