1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * drivers/media/radio/si4713-i2c.c |
4 | * |
5 | * Silicon Labs Si4713 FM Radio Transmitter I2C commands. |
6 | * |
7 | * Copyright (c) 2009 Nokia Corporation |
8 | * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> |
9 | */ |
10 | |
11 | #include <linux/completion.h> |
12 | #include <linux/delay.h> |
13 | #include <linux/err.h> |
14 | #include <linux/interrupt.h> |
15 | #include <linux/i2c.h> |
16 | #include <linux/slab.h> |
17 | #include <linux/gpio/consumer.h> |
18 | #include <linux/module.h> |
19 | #include <media/v4l2-device.h> |
20 | #include <media/v4l2-ioctl.h> |
21 | #include <media/v4l2-common.h> |
22 | |
23 | #include "si4713.h" |
24 | |
25 | /* module parameters */ |
26 | static int debug; |
27 | module_param(debug, int, S_IRUGO | S_IWUSR); |
28 | MODULE_PARM_DESC(debug, "Debug level (0 - 2)" ); |
29 | |
30 | MODULE_LICENSE("GPL" ); |
31 | MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>" ); |
32 | MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter" ); |
33 | MODULE_VERSION("0.0.1" ); |
34 | |
35 | #define DEFAULT_RDS_PI 0x00 |
36 | #define DEFAULT_RDS_PTY 0x00 |
37 | #define DEFAULT_RDS_DEVIATION 0x00C8 |
38 | #define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003 |
39 | #define DEFAULT_LIMITER_RTIME 0x1392 |
40 | #define DEFAULT_LIMITER_DEV 0x102CA |
41 | #define DEFAULT_PILOT_FREQUENCY 0x4A38 |
42 | #define DEFAULT_PILOT_DEVIATION 0x1A5E |
43 | #define DEFAULT_ACOMP_ATIME 0x0000 |
44 | #define DEFAULT_ACOMP_RTIME 0xF4240L |
45 | #define DEFAULT_ACOMP_GAIN 0x0F |
46 | #define DEFAULT_ACOMP_THRESHOLD (-0x28) |
47 | #define DEFAULT_MUTE 0x01 |
48 | #define DEFAULT_POWER_LEVEL 88 |
49 | #define DEFAULT_FREQUENCY 8800 |
50 | #define DEFAULT_PREEMPHASIS FMPE_EU |
51 | #define DEFAULT_TUNE_RNL 0xFF |
52 | |
53 | #define to_si4713_device(sd) container_of(sd, struct si4713_device, sd) |
54 | |
55 | /* frequency domain transformation (using times 10 to avoid floats) */ |
56 | #define FREQDEV_UNIT 100000 |
57 | #define FREQV4L2_MULTI 625 |
58 | #define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI) |
59 | #define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT) |
60 | #define FREQ_RANGE_LOW 7600 |
61 | #define FREQ_RANGE_HIGH 10800 |
62 | |
63 | #define MAX_ARGS 7 |
64 | |
65 | #define RDS_BLOCK 8 |
66 | #define RDS_BLOCK_CLEAR 0x03 |
67 | #define RDS_BLOCK_LOAD 0x04 |
68 | #define RDS_RADIOTEXT_2A 0x20 |
69 | #define RDS_RADIOTEXT_BLK_SIZE 4 |
70 | #define RDS_RADIOTEXT_INDEX_MAX 0x0F |
71 | #define RDS_CARRIAGE_RETURN 0x0D |
72 | |
73 | #define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0)) |
74 | |
75 | #define get_status_bit(p, b, m) (((p) & (m)) >> (b)) |
76 | #define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b))) |
77 | |
78 | #define ATTACK_TIME_UNIT 500 |
79 | |
80 | #define POWER_OFF 0x00 |
81 | #define POWER_ON 0x01 |
82 | |
83 | #define msb(x) ((u8)((u16) x >> 8)) |
84 | #define lsb(x) ((u8)((u16) x & 0x00FF)) |
85 | #define compose_u16(msb, lsb) (((u16)msb << 8) | lsb) |
86 | #define check_command_failed(status) (!(status & SI4713_CTS) || \ |
87 | (status & SI4713_ERR)) |
88 | /* mute definition */ |
89 | #define set_mute(p) (((p) & 1) | (((p) & 1) << 1)) |
90 | |
91 | #ifdef DEBUG |
92 | #define DBG_BUFFER(device, message, buffer, size) \ |
93 | { \ |
94 | int i; \ |
95 | char str[(size)*5]; \ |
96 | for (i = 0; i < size; i++) \ |
97 | sprintf(str + i * 5, " 0x%02x", buffer[i]); \ |
98 | v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \ |
99 | } |
100 | #else |
101 | #define DBG_BUFFER(device, message, buffer, size) |
102 | #endif |
103 | |
104 | /* |
105 | * Values for limiter release time (sorted by second column) |
106 | * device release |
107 | * value time (us) |
108 | */ |
109 | static long limiter_times[] = { |
110 | 2000, 250, |
111 | 1000, 500, |
112 | 510, 1000, |
113 | 255, 2000, |
114 | 170, 3000, |
115 | 127, 4020, |
116 | 102, 5010, |
117 | 85, 6020, |
118 | 73, 7010, |
119 | 64, 7990, |
120 | 57, 8970, |
121 | 51, 10030, |
122 | 25, 20470, |
123 | 17, 30110, |
124 | 13, 39380, |
125 | 10, 51190, |
126 | 8, 63690, |
127 | 7, 73140, |
128 | 6, 85330, |
129 | 5, 102390, |
130 | }; |
131 | |
132 | /* |
133 | * Values for audio compression release time (sorted by second column) |
134 | * device release |
135 | * value time (us) |
136 | */ |
137 | static unsigned long acomp_rtimes[] = { |
138 | 0, 100000, |
139 | 1, 200000, |
140 | 2, 350000, |
141 | 3, 525000, |
142 | 4, 1000000, |
143 | }; |
144 | |
145 | /* |
146 | * Values for preemphasis (sorted by second column) |
147 | * device preemphasis |
148 | * value value (v4l2) |
149 | */ |
150 | static unsigned long preemphasis_values[] = { |
151 | FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED, |
152 | FMPE_EU, V4L2_PREEMPHASIS_50_uS, |
153 | FMPE_USA, V4L2_PREEMPHASIS_75_uS, |
154 | }; |
155 | |
156 | static int usecs_to_dev(unsigned long usecs, unsigned long const array[], |
157 | int size) |
158 | { |
159 | int i; |
160 | int rval = -EINVAL; |
161 | |
162 | for (i = 0; i < size / 2; i++) |
163 | if (array[(i * 2) + 1] >= usecs) { |
164 | rval = array[i * 2]; |
165 | break; |
166 | } |
167 | |
168 | return rval; |
169 | } |
170 | |
171 | /* si4713_handler: IRQ handler, just complete work */ |
172 | static irqreturn_t si4713_handler(int irq, void *dev) |
173 | { |
174 | struct si4713_device *sdev = dev; |
175 | |
176 | v4l2_dbg(2, debug, &sdev->sd, |
177 | "%s: sending signal to completion work.\n" , __func__); |
178 | complete(&sdev->work); |
179 | |
180 | return IRQ_HANDLED; |
181 | } |
182 | |
183 | /* |
184 | * si4713_send_command - sends a command to si4713 and waits its response |
185 | * @sdev: si4713_device structure for the device we are communicating |
186 | * @command: command id |
187 | * @args: command arguments we are sending (up to 7) |
188 | * @argn: actual size of @args |
189 | * @response: buffer to place the expected response from the device (up to 15) |
190 | * @respn: actual size of @response |
191 | * @usecs: amount of time to wait before reading the response (in usecs) |
192 | */ |
193 | static int si4713_send_command(struct si4713_device *sdev, const u8 command, |
194 | const u8 args[], const int argn, |
195 | u8 response[], const int respn, const int usecs) |
196 | { |
197 | struct i2c_client *client = v4l2_get_subdevdata(sd: &sdev->sd); |
198 | unsigned long until_jiffies; |
199 | u8 data1[MAX_ARGS + 1]; |
200 | int err; |
201 | |
202 | if (!client->adapter) |
203 | return -ENODEV; |
204 | |
205 | /* First send the command and its arguments */ |
206 | data1[0] = command; |
207 | memcpy(data1 + 1, args, argn); |
208 | DBG_BUFFER(&sdev->sd, "Parameters" , data1, argn + 1); |
209 | |
210 | err = i2c_master_send(client, buf: data1, count: argn + 1); |
211 | if (err != argn + 1) { |
212 | v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n" , |
213 | command); |
214 | return err < 0 ? err : -EIO; |
215 | } |
216 | |
217 | until_jiffies = jiffies + usecs_to_jiffies(u: usecs) + 1; |
218 | |
219 | /* Wait response from interrupt */ |
220 | if (client->irq) { |
221 | if (!wait_for_completion_timeout(x: &sdev->work, |
222 | timeout: usecs_to_jiffies(u: usecs) + 1)) |
223 | v4l2_warn(&sdev->sd, |
224 | "(%s) Device took too much time to answer.\n" , |
225 | __func__); |
226 | } |
227 | |
228 | do { |
229 | err = i2c_master_recv(client, buf: response, count: respn); |
230 | if (err != respn) { |
231 | v4l2_err(&sdev->sd, |
232 | "Error %d while reading response for command 0x%02x\n" , |
233 | err, command); |
234 | return err < 0 ? err : -EIO; |
235 | } |
236 | |
237 | DBG_BUFFER(&sdev->sd, "Response" , response, respn); |
238 | if (!check_command_failed(response[0])) |
239 | return 0; |
240 | |
241 | if (client->irq) |
242 | return -EBUSY; |
243 | if (usecs <= 1000) |
244 | usleep_range(min: usecs, max: 1000); |
245 | else |
246 | usleep_range(min: 1000, max: 2000); |
247 | } while (time_is_after_jiffies(until_jiffies)); |
248 | |
249 | return -EBUSY; |
250 | } |
251 | |
252 | /* |
253 | * si4713_read_property - reads a si4713 property |
254 | * @sdev: si4713_device structure for the device we are communicating |
255 | * @prop: property identification number |
256 | * @pv: property value to be returned on success |
257 | */ |
258 | static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv) |
259 | { |
260 | int err; |
261 | u8 val[SI4713_GET_PROP_NRESP]; |
262 | /* |
263 | * .First byte = 0 |
264 | * .Second byte = property's MSB |
265 | * .Third byte = property's LSB |
266 | */ |
267 | const u8 args[SI4713_GET_PROP_NARGS] = { |
268 | 0x00, |
269 | msb(prop), |
270 | lsb(prop), |
271 | }; |
272 | |
273 | err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY, |
274 | args, ARRAY_SIZE(args), response: val, |
275 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
276 | |
277 | if (err < 0) |
278 | return err; |
279 | |
280 | *pv = compose_u16(val[2], val[3]); |
281 | |
282 | v4l2_dbg(1, debug, &sdev->sd, |
283 | "%s: property=0x%02x value=0x%02x status=0x%02x\n" , |
284 | __func__, prop, *pv, val[0]); |
285 | |
286 | return err; |
287 | } |
288 | |
289 | /* |
290 | * si4713_write_property - modifies a si4713 property |
291 | * @sdev: si4713_device structure for the device we are communicating |
292 | * @prop: property identification number |
293 | * @val: new value for that property |
294 | */ |
295 | static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val) |
296 | { |
297 | int rval; |
298 | u8 resp[SI4713_SET_PROP_NRESP]; |
299 | /* |
300 | * .First byte = 0 |
301 | * .Second byte = property's MSB |
302 | * .Third byte = property's LSB |
303 | * .Fourth byte = value's MSB |
304 | * .Fifth byte = value's LSB |
305 | */ |
306 | const u8 args[SI4713_SET_PROP_NARGS] = { |
307 | 0x00, |
308 | msb(prop), |
309 | lsb(prop), |
310 | msb(val), |
311 | lsb(val), |
312 | }; |
313 | |
314 | rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY, |
315 | args, ARRAY_SIZE(args), |
316 | response: resp, ARRAY_SIZE(resp), |
317 | DEFAULT_TIMEOUT); |
318 | |
319 | if (rval < 0) |
320 | return rval; |
321 | |
322 | v4l2_dbg(1, debug, &sdev->sd, |
323 | "%s: property=0x%02x value=0x%02x status=0x%02x\n" , |
324 | __func__, prop, val, resp[0]); |
325 | |
326 | /* |
327 | * As there is no command response for SET_PROPERTY, |
328 | * wait Tcomp time to finish before proceed, in order |
329 | * to have property properly set. |
330 | */ |
331 | msleep(TIMEOUT_SET_PROPERTY); |
332 | |
333 | return rval; |
334 | } |
335 | |
336 | /* |
337 | * si4713_powerup - Powers the device up |
338 | * @sdev: si4713_device structure for the device we are communicating |
339 | */ |
340 | static int si4713_powerup(struct si4713_device *sdev) |
341 | { |
342 | struct i2c_client *client = v4l2_get_subdevdata(sd: &sdev->sd); |
343 | int err; |
344 | u8 resp[SI4713_PWUP_NRESP]; |
345 | /* |
346 | * .First byte = Enabled interrupts and boot function |
347 | * .Second byte = Input operation mode |
348 | */ |
349 | u8 args[SI4713_PWUP_NARGS] = { |
350 | SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX, |
351 | SI4713_PWUP_OPMOD_ANALOG, |
352 | }; |
353 | |
354 | if (sdev->power_state) |
355 | return 0; |
356 | |
357 | if (sdev->vdd) { |
358 | err = regulator_enable(regulator: sdev->vdd); |
359 | if (err) { |
360 | v4l2_err(&sdev->sd, "Failed to enable vdd: %d\n" , err); |
361 | return err; |
362 | } |
363 | } |
364 | |
365 | if (sdev->vio) { |
366 | err = regulator_enable(regulator: sdev->vio); |
367 | if (err) { |
368 | v4l2_err(&sdev->sd, "Failed to enable vio: %d\n" , err); |
369 | return err; |
370 | } |
371 | } |
372 | |
373 | if (sdev->gpio_reset) { |
374 | udelay(50); |
375 | gpiod_set_value(desc: sdev->gpio_reset, value: 1); |
376 | } |
377 | |
378 | if (client->irq) |
379 | args[0] |= SI4713_PWUP_CTSIEN; |
380 | |
381 | err = si4713_send_command(sdev, SI4713_CMD_POWER_UP, |
382 | args, ARRAY_SIZE(args), |
383 | response: resp, ARRAY_SIZE(resp), |
384 | TIMEOUT_POWER_UP); |
385 | |
386 | if (!err) { |
387 | v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n" , |
388 | resp[0]); |
389 | v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n" ); |
390 | sdev->power_state = POWER_ON; |
391 | |
392 | if (client->irq) |
393 | err = si4713_write_property(sdev, SI4713_GPO_IEN, |
394 | SI4713_STC_INT | SI4713_CTS); |
395 | return err; |
396 | } |
397 | gpiod_set_value(desc: sdev->gpio_reset, value: 0); |
398 | |
399 | |
400 | if (sdev->vdd) { |
401 | err = regulator_disable(regulator: sdev->vdd); |
402 | if (err) |
403 | v4l2_err(&sdev->sd, "Failed to disable vdd: %d\n" , err); |
404 | } |
405 | |
406 | if (sdev->vio) { |
407 | err = regulator_disable(regulator: sdev->vio); |
408 | if (err) |
409 | v4l2_err(&sdev->sd, "Failed to disable vio: %d\n" , err); |
410 | } |
411 | |
412 | return err; |
413 | } |
414 | |
415 | /* |
416 | * si4713_powerdown - Powers the device down |
417 | * @sdev: si4713_device structure for the device we are communicating |
418 | */ |
419 | static int si4713_powerdown(struct si4713_device *sdev) |
420 | { |
421 | int err; |
422 | u8 resp[SI4713_PWDN_NRESP]; |
423 | |
424 | if (!sdev->power_state) |
425 | return 0; |
426 | |
427 | err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN, |
428 | NULL, argn: 0, |
429 | response: resp, ARRAY_SIZE(resp), |
430 | DEFAULT_TIMEOUT); |
431 | |
432 | if (!err) { |
433 | v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n" , |
434 | resp[0]); |
435 | v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n" ); |
436 | if (sdev->gpio_reset) |
437 | gpiod_set_value(desc: sdev->gpio_reset, value: 0); |
438 | |
439 | if (sdev->vdd) { |
440 | err = regulator_disable(regulator: sdev->vdd); |
441 | if (err) { |
442 | v4l2_err(&sdev->sd, |
443 | "Failed to disable vdd: %d\n" , err); |
444 | } |
445 | } |
446 | |
447 | if (sdev->vio) { |
448 | err = regulator_disable(regulator: sdev->vio); |
449 | if (err) { |
450 | v4l2_err(&sdev->sd, |
451 | "Failed to disable vio: %d\n" , err); |
452 | } |
453 | } |
454 | sdev->power_state = POWER_OFF; |
455 | } |
456 | |
457 | return err; |
458 | } |
459 | |
460 | /* |
461 | * si4713_checkrev - Checks if we are treating a device with the correct rev. |
462 | * @sdev: si4713_device structure for the device we are communicating |
463 | */ |
464 | static int si4713_checkrev(struct si4713_device *sdev) |
465 | { |
466 | struct i2c_client *client = v4l2_get_subdevdata(sd: &sdev->sd); |
467 | int rval; |
468 | u8 resp[SI4713_GETREV_NRESP]; |
469 | |
470 | rval = si4713_send_command(sdev, SI4713_CMD_GET_REV, |
471 | NULL, argn: 0, |
472 | response: resp, ARRAY_SIZE(resp), |
473 | DEFAULT_TIMEOUT); |
474 | |
475 | if (rval < 0) |
476 | return rval; |
477 | |
478 | if (resp[1] == SI4713_PRODUCT_NUMBER) { |
479 | v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n" , |
480 | client->addr << 1, client->adapter->name); |
481 | } else { |
482 | v4l2_err(&sdev->sd, "Invalid product number 0x%X\n" , resp[1]); |
483 | rval = -EINVAL; |
484 | } |
485 | return rval; |
486 | } |
487 | |
488 | /* |
489 | * si4713_wait_stc - Waits STC interrupt and clears status bits. Useful |
490 | * for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS |
491 | * @sdev: si4713_device structure for the device we are communicating |
492 | * @usecs: timeout to wait for STC interrupt signal |
493 | */ |
494 | static int si4713_wait_stc(struct si4713_device *sdev, const int usecs) |
495 | { |
496 | struct i2c_client *client = v4l2_get_subdevdata(sd: &sdev->sd); |
497 | u8 resp[SI4713_GET_STATUS_NRESP]; |
498 | unsigned long start_jiffies = jiffies; |
499 | int err; |
500 | |
501 | if (client->irq && |
502 | !wait_for_completion_timeout(x: &sdev->work, timeout: usecs_to_jiffies(u: usecs) + 1)) |
503 | v4l2_warn(&sdev->sd, |
504 | "(%s) Device took too much time to answer.\n" , __func__); |
505 | |
506 | for (;;) { |
507 | /* Clear status bits */ |
508 | err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS, |
509 | NULL, argn: 0, |
510 | response: resp, ARRAY_SIZE(resp), |
511 | DEFAULT_TIMEOUT); |
512 | /* The USB device returns errors when it waits for the |
513 | * STC bit to be set. Hence polling */ |
514 | if (err >= 0) { |
515 | v4l2_dbg(1, debug, &sdev->sd, |
516 | "%s: status bits: 0x%02x\n" , __func__, resp[0]); |
517 | |
518 | if (resp[0] & SI4713_STC_INT) |
519 | return 0; |
520 | } |
521 | if (jiffies_to_usecs(j: jiffies - start_jiffies) > usecs) |
522 | return err < 0 ? err : -EIO; |
523 | /* We sleep here for 3-4 ms in order to avoid flooding the device |
524 | * with USB requests. The si4713 USB driver was developed |
525 | * by reverse engineering the Windows USB driver. The windows |
526 | * driver also has a ~2.5 ms delay between responses. */ |
527 | usleep_range(min: 3000, max: 4000); |
528 | } |
529 | } |
530 | |
531 | /* |
532 | * si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning |
533 | * frequency between 76 and 108 MHz in 10 kHz units and |
534 | * steps of 50 kHz. |
535 | * @sdev: si4713_device structure for the device we are communicating |
536 | * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) |
537 | */ |
538 | static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency) |
539 | { |
540 | int err; |
541 | u8 val[SI4713_TXFREQ_NRESP]; |
542 | /* |
543 | * .First byte = 0 |
544 | * .Second byte = frequency's MSB |
545 | * .Third byte = frequency's LSB |
546 | */ |
547 | const u8 args[SI4713_TXFREQ_NARGS] = { |
548 | 0x00, |
549 | msb(frequency), |
550 | lsb(frequency), |
551 | }; |
552 | |
553 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ, |
554 | args, ARRAY_SIZE(args), response: val, |
555 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
556 | |
557 | if (err < 0) |
558 | return err; |
559 | |
560 | v4l2_dbg(1, debug, &sdev->sd, |
561 | "%s: frequency=0x%02x status=0x%02x\n" , __func__, |
562 | frequency, val[0]); |
563 | |
564 | err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); |
565 | if (err < 0) |
566 | return err; |
567 | |
568 | return compose_u16(args[1], args[2]); |
569 | } |
570 | |
571 | /* |
572 | * si4713_tx_tune_power - Sets the RF voltage level between 88 and 120 dBuV in |
573 | * 1 dB units. A value of 0x00 indicates off. The command |
574 | * also sets the antenna tuning capacitance. A value of 0 |
575 | * indicates autotuning, and a value of 1 - 191 indicates |
576 | * a manual override, which results in a tuning |
577 | * capacitance of 0.25 pF x @antcap. |
578 | * @sdev: si4713_device structure for the device we are communicating |
579 | * @power: tuning power (88 - 120 dBuV, unit/step 1 dB) |
580 | * @antcap: value of antenna tuning capacitor (0 - 191) |
581 | */ |
582 | static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power, |
583 | u8 antcap) |
584 | { |
585 | int err; |
586 | u8 val[SI4713_TXPWR_NRESP]; |
587 | /* |
588 | * .First byte = 0 |
589 | * .Second byte = 0 |
590 | * .Third byte = power |
591 | * .Fourth byte = antcap |
592 | */ |
593 | u8 args[SI4713_TXPWR_NARGS] = { |
594 | 0x00, |
595 | 0x00, |
596 | power, |
597 | antcap, |
598 | }; |
599 | |
600 | /* Map power values 1-87 to MIN_POWER (88) */ |
601 | if (power > 0 && power < SI4713_MIN_POWER) |
602 | args[2] = power = SI4713_MIN_POWER; |
603 | |
604 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER, |
605 | args, ARRAY_SIZE(args), response: val, |
606 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
607 | |
608 | if (err < 0) |
609 | return err; |
610 | |
611 | v4l2_dbg(1, debug, &sdev->sd, |
612 | "%s: power=0x%02x antcap=0x%02x status=0x%02x\n" , |
613 | __func__, power, antcap, val[0]); |
614 | |
615 | return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER); |
616 | } |
617 | |
618 | /* |
619 | * si4713_tx_tune_measure - Enters receive mode and measures the received noise |
620 | * level in units of dBuV on the selected frequency. |
621 | * The Frequency must be between 76 and 108 MHz in 10 kHz |
622 | * units and steps of 50 kHz. The command also sets the |
623 | * antenna tuning capacitance. A value of 0 means |
624 | * autotuning, and a value of 1 to 191 indicates manual |
625 | * override. |
626 | * @sdev: si4713_device structure for the device we are communicating |
627 | * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) |
628 | * @antcap: value of antenna tuning capacitor (0 - 191) |
629 | */ |
630 | static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency, |
631 | u8 antcap) |
632 | { |
633 | int err; |
634 | u8 val[SI4713_TXMEA_NRESP]; |
635 | /* |
636 | * .First byte = 0 |
637 | * .Second byte = frequency's MSB |
638 | * .Third byte = frequency's LSB |
639 | * .Fourth byte = antcap |
640 | */ |
641 | const u8 args[SI4713_TXMEA_NARGS] = { |
642 | 0x00, |
643 | msb(frequency), |
644 | lsb(frequency), |
645 | antcap, |
646 | }; |
647 | |
648 | sdev->tune_rnl = DEFAULT_TUNE_RNL; |
649 | |
650 | if (antcap > SI4713_MAX_ANTCAP) |
651 | return -EDOM; |
652 | |
653 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE, |
654 | args, ARRAY_SIZE(args), response: val, |
655 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
656 | |
657 | if (err < 0) |
658 | return err; |
659 | |
660 | v4l2_dbg(1, debug, &sdev->sd, |
661 | "%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n" , |
662 | __func__, frequency, antcap, val[0]); |
663 | |
664 | return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); |
665 | } |
666 | |
667 | /* |
668 | * si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or |
669 | * tx_tune_power commands. This command return the current |
670 | * frequency, output voltage in dBuV, the antenna tunning |
671 | * capacitance value and the received noise level. The |
672 | * command also clears the stcint interrupt bit when the |
673 | * first bit of its arguments is high. |
674 | * @sdev: si4713_device structure for the device we are communicating |
675 | * @intack: 0x01 to clear the seek/tune complete interrupt status indicator. |
676 | * @frequency: returned frequency |
677 | * @power: returned power |
678 | * @antcap: returned antenna capacitance |
679 | * @noise: returned noise level |
680 | */ |
681 | static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack, |
682 | u16 *frequency, u8 *power, |
683 | u8 *antcap, u8 *noise) |
684 | { |
685 | int err; |
686 | u8 val[SI4713_TXSTATUS_NRESP]; |
687 | /* |
688 | * .First byte = intack bit |
689 | */ |
690 | const u8 args[SI4713_TXSTATUS_NARGS] = { |
691 | intack & SI4713_INTACK_MASK, |
692 | }; |
693 | |
694 | err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS, |
695 | args, ARRAY_SIZE(args), response: val, |
696 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
697 | |
698 | if (!err) { |
699 | v4l2_dbg(1, debug, &sdev->sd, |
700 | "%s: status=0x%02x\n" , __func__, val[0]); |
701 | *frequency = compose_u16(val[2], val[3]); |
702 | sdev->frequency = *frequency; |
703 | *power = val[5]; |
704 | *antcap = val[6]; |
705 | *noise = val[7]; |
706 | v4l2_dbg(1, debug, &sdev->sd, |
707 | "%s: response: %d x 10 kHz (power %d, antcap %d, rnl %d)\n" , |
708 | __func__, *frequency, *power, *antcap, *noise); |
709 | } |
710 | |
711 | return err; |
712 | } |
713 | |
714 | /* |
715 | * si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer. |
716 | * @sdev: si4713_device structure for the device we are communicating |
717 | * @mode: the buffer operation mode. |
718 | * @rdsb: RDS Block B |
719 | * @rdsc: RDS Block C |
720 | * @rdsd: RDS Block D |
721 | * @cbleft: returns the number of available circular buffer blocks minus the |
722 | * number of used circular buffer blocks. |
723 | */ |
724 | static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb, |
725 | u16 rdsc, u16 rdsd, s8 *cbleft) |
726 | { |
727 | int err; |
728 | u8 val[SI4713_RDSBUFF_NRESP]; |
729 | |
730 | const u8 args[SI4713_RDSBUFF_NARGS] = { |
731 | mode & SI4713_RDSBUFF_MODE_MASK, |
732 | msb(rdsb), |
733 | lsb(rdsb), |
734 | msb(rdsc), |
735 | lsb(rdsc), |
736 | msb(rdsd), |
737 | lsb(rdsd), |
738 | }; |
739 | |
740 | err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF, |
741 | args, ARRAY_SIZE(args), response: val, |
742 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
743 | |
744 | if (!err) { |
745 | v4l2_dbg(1, debug, &sdev->sd, |
746 | "%s: status=0x%02x\n" , __func__, val[0]); |
747 | *cbleft = (s8)val[2] - val[3]; |
748 | v4l2_dbg(1, debug, &sdev->sd, |
749 | "%s: response: interrupts 0x%02x cb avail: %d cb used %d fifo avail %d fifo used %d\n" , |
750 | __func__, val[1], val[2], val[3], val[4], val[5]); |
751 | } |
752 | |
753 | return err; |
754 | } |
755 | |
756 | /* |
757 | * si4713_tx_rds_ps - Loads the program service buffer. |
758 | * @sdev: si4713_device structure for the device we are communicating |
759 | * @psid: program service id to be loaded. |
760 | * @pschar: assumed 4 size char array to be loaded into the program service |
761 | */ |
762 | static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid, |
763 | unsigned char *pschar) |
764 | { |
765 | int err; |
766 | u8 val[SI4713_RDSPS_NRESP]; |
767 | |
768 | const u8 args[SI4713_RDSPS_NARGS] = { |
769 | psid & SI4713_RDSPS_PSID_MASK, |
770 | pschar[0], |
771 | pschar[1], |
772 | pschar[2], |
773 | pschar[3], |
774 | }; |
775 | |
776 | err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS, |
777 | args, ARRAY_SIZE(args), response: val, |
778 | ARRAY_SIZE(val), DEFAULT_TIMEOUT); |
779 | |
780 | if (err < 0) |
781 | return err; |
782 | |
783 | v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n" , __func__, val[0]); |
784 | |
785 | return err; |
786 | } |
787 | |
788 | static int si4713_set_power_state(struct si4713_device *sdev, u8 value) |
789 | { |
790 | if (value) |
791 | return si4713_powerup(sdev); |
792 | return si4713_powerdown(sdev); |
793 | } |
794 | |
795 | static int si4713_set_mute(struct si4713_device *sdev, u16 mute) |
796 | { |
797 | int rval = 0; |
798 | |
799 | mute = set_mute(mute); |
800 | |
801 | if (sdev->power_state) |
802 | rval = si4713_write_property(sdev, |
803 | SI4713_TX_LINE_INPUT_MUTE, val: mute); |
804 | |
805 | return rval; |
806 | } |
807 | |
808 | static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name) |
809 | { |
810 | int rval = 0, i; |
811 | u8 len = 0; |
812 | |
813 | /* We want to clear the whole thing */ |
814 | if (!strlen(ps_name)) |
815 | memset(ps_name, 0, MAX_RDS_PS_NAME + 1); |
816 | |
817 | if (sdev->power_state) { |
818 | /* Write the new ps name and clear the padding */ |
819 | for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) { |
820 | rval = si4713_tx_rds_ps(sdev, psid: (i / (RDS_BLOCK / 2)), |
821 | pschar: ps_name + i); |
822 | if (rval < 0) |
823 | return rval; |
824 | } |
825 | |
826 | /* Setup the size to be sent */ |
827 | if (strlen(ps_name)) |
828 | len = strlen(ps_name) - 1; |
829 | else |
830 | len = 1; |
831 | |
832 | rval = si4713_write_property(sdev, |
833 | SI4713_TX_RDS_PS_MESSAGE_COUNT, |
834 | rds_ps_nblocks(len)); |
835 | if (rval < 0) |
836 | return rval; |
837 | |
838 | rval = si4713_write_property(sdev, |
839 | SI4713_TX_RDS_PS_REPEAT_COUNT, |
840 | DEFAULT_RDS_PS_REPEAT_COUNT * 2); |
841 | if (rval < 0) |
842 | return rval; |
843 | } |
844 | |
845 | return rval; |
846 | } |
847 | |
848 | static int si4713_set_rds_radio_text(struct si4713_device *sdev, const char *rt) |
849 | { |
850 | static const char cr[RDS_RADIOTEXT_BLK_SIZE] = { RDS_CARRIAGE_RETURN, 0 }; |
851 | int rval = 0, i; |
852 | u16 t_index = 0; |
853 | u8 b_index = 0, cr_inserted = 0; |
854 | s8 left; |
855 | |
856 | if (!sdev->power_state) |
857 | return rval; |
858 | |
859 | rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, rdsb: 0, rdsc: 0, rdsd: 0, cbleft: &left); |
860 | if (rval < 0) |
861 | return rval; |
862 | |
863 | if (!strlen(rt)) |
864 | return rval; |
865 | |
866 | do { |
867 | /* RDS spec says that if the last block isn't used, |
868 | * then apply a carriage return |
869 | */ |
870 | if (t_index < (RDS_RADIOTEXT_INDEX_MAX * RDS_RADIOTEXT_BLK_SIZE)) { |
871 | for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) { |
872 | if (!rt[t_index + i] || |
873 | rt[t_index + i] == RDS_CARRIAGE_RETURN) { |
874 | rt = cr; |
875 | cr_inserted = 1; |
876 | break; |
877 | } |
878 | } |
879 | } |
880 | |
881 | rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD, |
882 | compose_u16(RDS_RADIOTEXT_2A, b_index++), |
883 | compose_u16(rt[t_index], rt[t_index + 1]), |
884 | compose_u16(rt[t_index + 2], rt[t_index + 3]), |
885 | cbleft: &left); |
886 | if (rval < 0) |
887 | return rval; |
888 | |
889 | t_index += RDS_RADIOTEXT_BLK_SIZE; |
890 | |
891 | if (cr_inserted) |
892 | break; |
893 | } while (left > 0); |
894 | |
895 | return rval; |
896 | } |
897 | |
898 | /* |
899 | * si4713_update_tune_status - update properties from tx_tune_status |
900 | * command. Must be called with sdev->mutex held. |
901 | * @sdev: si4713_device structure for the device we are communicating |
902 | */ |
903 | static int si4713_update_tune_status(struct si4713_device *sdev) |
904 | { |
905 | int rval; |
906 | u16 f = 0; |
907 | u8 p = 0, a = 0, n = 0; |
908 | |
909 | rval = si4713_tx_tune_status(sdev, intack: 0x00, frequency: &f, power: &p, antcap: &a, noise: &n); |
910 | |
911 | if (rval < 0) |
912 | goto exit; |
913 | |
914 | /* TODO: check that power_level and antenna_capacitor really are not |
915 | changed by the hardware. If they are, then these controls should become |
916 | volatiles. |
917 | sdev->power_level = p; |
918 | sdev->antenna_capacitor = a;*/ |
919 | sdev->tune_rnl = n; |
920 | |
921 | exit: |
922 | return rval; |
923 | } |
924 | |
925 | static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id, |
926 | s32 *bit, s32 *mask, u16 *property, int *mul, |
927 | unsigned long **table, int *size) |
928 | { |
929 | s32 rval = 0; |
930 | |
931 | switch (id) { |
932 | /* FM_TX class controls */ |
933 | case V4L2_CID_RDS_TX_PI: |
934 | *property = SI4713_TX_RDS_PI; |
935 | *mul = 1; |
936 | break; |
937 | case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: |
938 | *property = SI4713_TX_ACOMP_THRESHOLD; |
939 | *mul = 1; |
940 | break; |
941 | case V4L2_CID_AUDIO_COMPRESSION_GAIN: |
942 | *property = SI4713_TX_ACOMP_GAIN; |
943 | *mul = 1; |
944 | break; |
945 | case V4L2_CID_PILOT_TONE_FREQUENCY: |
946 | *property = SI4713_TX_PILOT_FREQUENCY; |
947 | *mul = 1; |
948 | break; |
949 | case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: |
950 | *property = SI4713_TX_ACOMP_ATTACK_TIME; |
951 | *mul = ATTACK_TIME_UNIT; |
952 | break; |
953 | case V4L2_CID_PILOT_TONE_DEVIATION: |
954 | *property = SI4713_TX_PILOT_DEVIATION; |
955 | *mul = 10; |
956 | break; |
957 | case V4L2_CID_AUDIO_LIMITER_DEVIATION: |
958 | *property = SI4713_TX_AUDIO_DEVIATION; |
959 | *mul = 10; |
960 | break; |
961 | case V4L2_CID_RDS_TX_DEVIATION: |
962 | *property = SI4713_TX_RDS_DEVIATION; |
963 | *mul = 1; |
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 | break; |
971 | case V4L2_CID_RDS_TX_DYNAMIC_PTY: |
972 | *property = SI4713_TX_RDS_PS_MISC; |
973 | *bit = 15; |
974 | *mask = 1 << 15; |
975 | break; |
976 | case V4L2_CID_RDS_TX_COMPRESSED: |
977 | *property = SI4713_TX_RDS_PS_MISC; |
978 | *bit = 14; |
979 | *mask = 1 << 14; |
980 | break; |
981 | case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: |
982 | *property = SI4713_TX_RDS_PS_MISC; |
983 | *bit = 13; |
984 | *mask = 1 << 13; |
985 | break; |
986 | case V4L2_CID_RDS_TX_MONO_STEREO: |
987 | *property = SI4713_TX_RDS_PS_MISC; |
988 | *bit = 12; |
989 | *mask = 1 << 12; |
990 | break; |
991 | case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: |
992 | *property = SI4713_TX_RDS_PS_MISC; |
993 | *bit = 10; |
994 | *mask = 1 << 10; |
995 | break; |
996 | case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: |
997 | *property = SI4713_TX_RDS_PS_MISC; |
998 | *bit = 4; |
999 | *mask = 1 << 4; |
1000 | break; |
1001 | case V4L2_CID_RDS_TX_MUSIC_SPEECH: |
1002 | *property = SI4713_TX_RDS_PS_MISC; |
1003 | *bit = 3; |
1004 | *mask = 1 << 3; |
1005 | break; |
1006 | case V4L2_CID_AUDIO_LIMITER_ENABLED: |
1007 | *property = SI4713_TX_ACOMP_ENABLE; |
1008 | *bit = 1; |
1009 | *mask = 1 << 1; |
1010 | break; |
1011 | case V4L2_CID_AUDIO_COMPRESSION_ENABLED: |
1012 | *property = SI4713_TX_ACOMP_ENABLE; |
1013 | *bit = 0; |
1014 | *mask = 1 << 0; |
1015 | break; |
1016 | case V4L2_CID_PILOT_TONE_ENABLED: |
1017 | *property = SI4713_TX_COMPONENT_ENABLE; |
1018 | *bit = 0; |
1019 | *mask = 1 << 0; |
1020 | break; |
1021 | |
1022 | case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: |
1023 | *property = SI4713_TX_LIMITER_RELEASE_TIME; |
1024 | *table = limiter_times; |
1025 | *size = ARRAY_SIZE(limiter_times); |
1026 | break; |
1027 | case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: |
1028 | *property = SI4713_TX_ACOMP_RELEASE_TIME; |
1029 | *table = acomp_rtimes; |
1030 | *size = ARRAY_SIZE(acomp_rtimes); |
1031 | break; |
1032 | case V4L2_CID_TUNE_PREEMPHASIS: |
1033 | *property = SI4713_TX_PREEMPHASIS; |
1034 | *table = preemphasis_values; |
1035 | *size = ARRAY_SIZE(preemphasis_values); |
1036 | break; |
1037 | |
1038 | default: |
1039 | rval = -EINVAL; |
1040 | break; |
1041 | } |
1042 | |
1043 | return rval; |
1044 | } |
1045 | |
1046 | static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f); |
1047 | static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *); |
1048 | /* |
1049 | * si4713_setup - Sets the device up with current configuration. |
1050 | * @sdev: si4713_device structure for the device we are communicating |
1051 | */ |
1052 | static int si4713_setup(struct si4713_device *sdev) |
1053 | { |
1054 | struct v4l2_frequency f; |
1055 | struct v4l2_modulator vm; |
1056 | int rval; |
1057 | |
1058 | /* Device procedure needs to set frequency first */ |
1059 | f.tuner = 0; |
1060 | f.frequency = sdev->frequency ? sdev->frequency : DEFAULT_FREQUENCY; |
1061 | f.frequency = si4713_to_v4l2(f.frequency); |
1062 | rval = si4713_s_frequency(sd: &sdev->sd, f: &f); |
1063 | |
1064 | vm.index = 0; |
1065 | if (sdev->stereo) |
1066 | vm.txsubchans = V4L2_TUNER_SUB_STEREO; |
1067 | else |
1068 | vm.txsubchans = V4L2_TUNER_SUB_MONO; |
1069 | if (sdev->rds_enabled) |
1070 | vm.txsubchans |= V4L2_TUNER_SUB_RDS; |
1071 | si4713_s_modulator(sd: &sdev->sd, &vm); |
1072 | |
1073 | return rval; |
1074 | } |
1075 | |
1076 | /* |
1077 | * si4713_initialize - Sets the device up with default configuration. |
1078 | * @sdev: si4713_device structure for the device we are communicating |
1079 | */ |
1080 | static int si4713_initialize(struct si4713_device *sdev) |
1081 | { |
1082 | int rval; |
1083 | |
1084 | rval = si4713_set_power_state(sdev, POWER_ON); |
1085 | if (rval < 0) |
1086 | return rval; |
1087 | |
1088 | rval = si4713_checkrev(sdev); |
1089 | if (rval < 0) |
1090 | return rval; |
1091 | |
1092 | rval = si4713_set_power_state(sdev, POWER_OFF); |
1093 | if (rval < 0) |
1094 | return rval; |
1095 | |
1096 | sdev->frequency = DEFAULT_FREQUENCY; |
1097 | sdev->stereo = 1; |
1098 | sdev->tune_rnl = DEFAULT_TUNE_RNL; |
1099 | return 0; |
1100 | } |
1101 | |
1102 | /* si4713_s_ctrl - set the value of a control */ |
1103 | static int si4713_s_ctrl(struct v4l2_ctrl *ctrl) |
1104 | { |
1105 | struct si4713_device *sdev = |
1106 | container_of(ctrl->handler, struct si4713_device, ctrl_handler); |
1107 | u32 val = 0; |
1108 | s32 bit = 0, mask = 0; |
1109 | u16 property = 0; |
1110 | int mul = 0; |
1111 | unsigned long *table = NULL; |
1112 | int size = 0; |
1113 | bool force = false; |
1114 | int c; |
1115 | int ret = 0; |
1116 | |
1117 | if (ctrl->id != V4L2_CID_AUDIO_MUTE) |
1118 | return -EINVAL; |
1119 | if (ctrl->is_new) { |
1120 | if (ctrl->val) { |
1121 | ret = si4713_set_mute(sdev, mute: ctrl->val); |
1122 | if (!ret) |
1123 | ret = si4713_set_power_state(sdev, POWER_DOWN); |
1124 | return ret; |
1125 | } |
1126 | ret = si4713_set_power_state(sdev, POWER_UP); |
1127 | if (!ret) |
1128 | ret = si4713_set_mute(sdev, mute: ctrl->val); |
1129 | if (!ret) |
1130 | ret = si4713_setup(sdev); |
1131 | if (ret) |
1132 | return ret; |
1133 | force = true; |
1134 | } |
1135 | |
1136 | if (!sdev->power_state) |
1137 | return 0; |
1138 | |
1139 | for (c = 1; !ret && c < ctrl->ncontrols; c++) { |
1140 | ctrl = ctrl->cluster[c]; |
1141 | |
1142 | if (!force && !ctrl->is_new) |
1143 | continue; |
1144 | |
1145 | switch (ctrl->id) { |
1146 | case V4L2_CID_RDS_TX_PS_NAME: |
1147 | ret = si4713_set_rds_ps_name(sdev, ps_name: ctrl->p_new.p_char); |
1148 | break; |
1149 | |
1150 | case V4L2_CID_RDS_TX_RADIO_TEXT: |
1151 | ret = si4713_set_rds_radio_text(sdev, rt: ctrl->p_new.p_char); |
1152 | break; |
1153 | |
1154 | case V4L2_CID_TUNE_ANTENNA_CAPACITOR: |
1155 | /* don't handle this control if we force setting all |
1156 | * controls since in that case it will be handled by |
1157 | * V4L2_CID_TUNE_POWER_LEVEL. */ |
1158 | if (force) |
1159 | break; |
1160 | fallthrough; |
1161 | case V4L2_CID_TUNE_POWER_LEVEL: |
1162 | ret = si4713_tx_tune_power(sdev, |
1163 | power: sdev->tune_pwr_level->val, antcap: sdev->tune_ant_cap->val); |
1164 | if (!ret) { |
1165 | /* Make sure we don't set this twice */ |
1166 | sdev->tune_ant_cap->is_new = false; |
1167 | sdev->tune_pwr_level->is_new = false; |
1168 | } |
1169 | break; |
1170 | |
1171 | case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: |
1172 | case V4L2_CID_RDS_TX_ALT_FREQS: |
1173 | if (sdev->rds_alt_freqs_enable->val) { |
1174 | val = sdev->rds_alt_freqs->p_new.p_u32[0]; |
1175 | val = val / 100 - 876 + 0xe101; |
1176 | } else { |
1177 | val = 0xe0e0; |
1178 | } |
1179 | ret = si4713_write_property(sdev, SI4713_TX_RDS_PS_AF, val); |
1180 | break; |
1181 | |
1182 | default: |
1183 | ret = si4713_choose_econtrol_action(sdev, id: ctrl->id, bit: &bit, |
1184 | mask: &mask, property: &property, mul: &mul, table: &table, size: &size); |
1185 | if (ret < 0) |
1186 | break; |
1187 | |
1188 | val = ctrl->val; |
1189 | if (mul) { |
1190 | val = val / mul; |
1191 | } else if (table) { |
1192 | ret = usecs_to_dev(usecs: val, array: table, size); |
1193 | if (ret < 0) |
1194 | break; |
1195 | val = ret; |
1196 | ret = 0; |
1197 | } |
1198 | |
1199 | if (mask) { |
1200 | ret = si4713_read_property(sdev, prop: property, pv: &val); |
1201 | if (ret < 0) |
1202 | break; |
1203 | val = set_bits(val, ctrl->val, bit, mask); |
1204 | } |
1205 | |
1206 | ret = si4713_write_property(sdev, prop: property, val); |
1207 | if (ret < 0) |
1208 | break; |
1209 | if (mask) |
1210 | val = ctrl->val; |
1211 | break; |
1212 | } |
1213 | } |
1214 | |
1215 | return ret; |
1216 | } |
1217 | |
1218 | /* si4713_ioctl - deal with private ioctls (only rnl for now) */ |
1219 | static long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) |
1220 | { |
1221 | struct si4713_device *sdev = to_si4713_device(sd); |
1222 | struct si4713_rnl *rnl = arg; |
1223 | u16 frequency; |
1224 | int rval = 0; |
1225 | |
1226 | if (!arg) |
1227 | return -EINVAL; |
1228 | |
1229 | switch (cmd) { |
1230 | case SI4713_IOC_MEASURE_RNL: |
1231 | frequency = v4l2_to_si4713(rnl->frequency); |
1232 | |
1233 | if (sdev->power_state) { |
1234 | /* Set desired measurement frequency */ |
1235 | rval = si4713_tx_tune_measure(sdev, frequency, antcap: 0); |
1236 | if (rval < 0) |
1237 | return rval; |
1238 | /* get results from tune status */ |
1239 | rval = si4713_update_tune_status(sdev); |
1240 | if (rval < 0) |
1241 | return rval; |
1242 | } |
1243 | rnl->rnl = sdev->tune_rnl; |
1244 | break; |
1245 | |
1246 | default: |
1247 | /* nothing */ |
1248 | rval = -ENOIOCTLCMD; |
1249 | } |
1250 | |
1251 | return rval; |
1252 | } |
1253 | |
1254 | /* si4713_g_modulator - get modulator attributes */ |
1255 | static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm) |
1256 | { |
1257 | struct si4713_device *sdev = to_si4713_device(sd); |
1258 | int rval = 0; |
1259 | |
1260 | if (!sdev) |
1261 | return -ENODEV; |
1262 | |
1263 | if (vm->index > 0) |
1264 | return -EINVAL; |
1265 | |
1266 | strscpy(vm->name, "FM Modulator" , sizeof(vm->name)); |
1267 | vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW | |
1268 | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_CONTROLS; |
1269 | |
1270 | /* Report current frequency range limits */ |
1271 | vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW); |
1272 | vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH); |
1273 | |
1274 | if (sdev->power_state) { |
1275 | u32 comp_en = 0; |
1276 | |
1277 | rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE, |
1278 | pv: &comp_en); |
1279 | if (rval < 0) |
1280 | return rval; |
1281 | |
1282 | sdev->stereo = get_status_bit(comp_en, 1, 1 << 1); |
1283 | } |
1284 | |
1285 | /* Report current audio mode: mono or stereo */ |
1286 | if (sdev->stereo) |
1287 | vm->txsubchans = V4L2_TUNER_SUB_STEREO; |
1288 | else |
1289 | vm->txsubchans = V4L2_TUNER_SUB_MONO; |
1290 | |
1291 | /* Report rds feature status */ |
1292 | if (sdev->rds_enabled) |
1293 | vm->txsubchans |= V4L2_TUNER_SUB_RDS; |
1294 | else |
1295 | vm->txsubchans &= ~V4L2_TUNER_SUB_RDS; |
1296 | |
1297 | return rval; |
1298 | } |
1299 | |
1300 | /* si4713_s_modulator - set modulator attributes */ |
1301 | static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *vm) |
1302 | { |
1303 | struct si4713_device *sdev = to_si4713_device(sd); |
1304 | int rval = 0; |
1305 | u16 stereo, rds; |
1306 | u32 p; |
1307 | |
1308 | if (!sdev) |
1309 | return -ENODEV; |
1310 | |
1311 | if (vm->index > 0) |
1312 | return -EINVAL; |
1313 | |
1314 | /* Set audio mode: mono or stereo */ |
1315 | if (vm->txsubchans & V4L2_TUNER_SUB_STEREO) |
1316 | stereo = 1; |
1317 | else if (vm->txsubchans & V4L2_TUNER_SUB_MONO) |
1318 | stereo = 0; |
1319 | else |
1320 | return -EINVAL; |
1321 | |
1322 | rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS); |
1323 | |
1324 | if (sdev->power_state) { |
1325 | rval = si4713_read_property(sdev, |
1326 | SI4713_TX_COMPONENT_ENABLE, pv: &p); |
1327 | if (rval < 0) |
1328 | return rval; |
1329 | |
1330 | p = set_bits(p, stereo, 1, 1 << 1); |
1331 | p = set_bits(p, rds, 2, 1 << 2); |
1332 | |
1333 | rval = si4713_write_property(sdev, |
1334 | SI4713_TX_COMPONENT_ENABLE, val: p); |
1335 | if (rval < 0) |
1336 | return rval; |
1337 | } |
1338 | |
1339 | sdev->stereo = stereo; |
1340 | sdev->rds_enabled = rds; |
1341 | |
1342 | return rval; |
1343 | } |
1344 | |
1345 | /* si4713_g_frequency - get tuner or modulator radio frequency */ |
1346 | static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) |
1347 | { |
1348 | struct si4713_device *sdev = to_si4713_device(sd); |
1349 | int rval = 0; |
1350 | |
1351 | if (f->tuner) |
1352 | return -EINVAL; |
1353 | |
1354 | if (sdev->power_state) { |
1355 | u16 freq; |
1356 | u8 p, a, n; |
1357 | |
1358 | rval = si4713_tx_tune_status(sdev, intack: 0x00, frequency: &freq, power: &p, antcap: &a, noise: &n); |
1359 | if (rval < 0) |
1360 | return rval; |
1361 | |
1362 | sdev->frequency = freq; |
1363 | } |
1364 | |
1365 | f->frequency = si4713_to_v4l2(sdev->frequency); |
1366 | |
1367 | return rval; |
1368 | } |
1369 | |
1370 | /* si4713_s_frequency - set tuner or modulator radio frequency */ |
1371 | static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f) |
1372 | { |
1373 | struct si4713_device *sdev = to_si4713_device(sd); |
1374 | int rval = 0; |
1375 | u16 frequency = v4l2_to_si4713(f->frequency); |
1376 | |
1377 | if (f->tuner) |
1378 | return -EINVAL; |
1379 | |
1380 | /* Check frequency range */ |
1381 | frequency = clamp_t(u16, frequency, FREQ_RANGE_LOW, FREQ_RANGE_HIGH); |
1382 | |
1383 | if (sdev->power_state) { |
1384 | rval = si4713_tx_tune_freq(sdev, frequency); |
1385 | if (rval < 0) |
1386 | return rval; |
1387 | frequency = rval; |
1388 | rval = 0; |
1389 | } |
1390 | sdev->frequency = frequency; |
1391 | |
1392 | return rval; |
1393 | } |
1394 | |
1395 | static const struct v4l2_ctrl_ops si4713_ctrl_ops = { |
1396 | .s_ctrl = si4713_s_ctrl, |
1397 | }; |
1398 | |
1399 | static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = { |
1400 | .ioctl = si4713_ioctl, |
1401 | }; |
1402 | |
1403 | static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = { |
1404 | .g_frequency = si4713_g_frequency, |
1405 | .s_frequency = si4713_s_frequency, |
1406 | .g_modulator = si4713_g_modulator, |
1407 | .s_modulator = si4713_s_modulator, |
1408 | }; |
1409 | |
1410 | static const struct v4l2_subdev_ops si4713_subdev_ops = { |
1411 | .core = &si4713_subdev_core_ops, |
1412 | .tuner = &si4713_subdev_tuner_ops, |
1413 | }; |
1414 | |
1415 | static const struct v4l2_ctrl_config si4713_alt_freqs_ctrl = { |
1416 | .id = V4L2_CID_RDS_TX_ALT_FREQS, |
1417 | .type = V4L2_CTRL_TYPE_U32, |
1418 | .min = 87600, |
1419 | .max = 107900, |
1420 | .step = 100, |
1421 | .def = 87600, |
1422 | .dims = { 1 }, |
1423 | .elem_size = sizeof(u32), |
1424 | }; |
1425 | |
1426 | /* |
1427 | * I2C driver interface |
1428 | */ |
1429 | /* si4713_probe - probe for the device */ |
1430 | static int si4713_probe(struct i2c_client *client) |
1431 | { |
1432 | struct si4713_device *sdev; |
1433 | struct v4l2_ctrl_handler *hdl; |
1434 | struct si4713_platform_data *pdata = client->dev.platform_data; |
1435 | struct device_node *np = client->dev.of_node; |
1436 | struct radio_si4713_platform_data si4713_pdev_pdata; |
1437 | struct platform_device *si4713_pdev; |
1438 | int rval; |
1439 | |
1440 | sdev = devm_kzalloc(dev: &client->dev, size: sizeof(*sdev), GFP_KERNEL); |
1441 | if (!sdev) { |
1442 | dev_err(&client->dev, "Failed to alloc video device.\n" ); |
1443 | rval = -ENOMEM; |
1444 | goto exit; |
1445 | } |
1446 | |
1447 | sdev->gpio_reset = devm_gpiod_get_optional(dev: &client->dev, con_id: "reset" , |
1448 | flags: GPIOD_OUT_LOW); |
1449 | if (IS_ERR(ptr: sdev->gpio_reset)) { |
1450 | rval = PTR_ERR(ptr: sdev->gpio_reset); |
1451 | dev_err(&client->dev, "Failed to request gpio: %d\n" , rval); |
1452 | goto exit; |
1453 | } |
1454 | |
1455 | sdev->vdd = devm_regulator_get_optional(dev: &client->dev, id: "vdd" ); |
1456 | if (IS_ERR(ptr: sdev->vdd)) { |
1457 | rval = PTR_ERR(ptr: sdev->vdd); |
1458 | if (rval == -EPROBE_DEFER) |
1459 | goto exit; |
1460 | |
1461 | dev_dbg(&client->dev, "no vdd regulator found: %d\n" , rval); |
1462 | sdev->vdd = NULL; |
1463 | } |
1464 | |
1465 | sdev->vio = devm_regulator_get_optional(dev: &client->dev, id: "vio" ); |
1466 | if (IS_ERR(ptr: sdev->vio)) { |
1467 | rval = PTR_ERR(ptr: sdev->vio); |
1468 | if (rval == -EPROBE_DEFER) |
1469 | goto exit; |
1470 | |
1471 | dev_dbg(&client->dev, "no vio regulator found: %d\n" , rval); |
1472 | sdev->vio = NULL; |
1473 | } |
1474 | |
1475 | v4l2_i2c_subdev_init(sd: &sdev->sd, client, ops: &si4713_subdev_ops); |
1476 | |
1477 | init_completion(x: &sdev->work); |
1478 | |
1479 | hdl = &sdev->ctrl_handler; |
1480 | v4l2_ctrl_handler_init(hdl, 20); |
1481 | sdev->mute = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1482 | V4L2_CID_AUDIO_MUTE, min: 0, max: 1, step: 1, DEFAULT_MUTE); |
1483 | |
1484 | sdev->rds_pi = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1485 | V4L2_CID_RDS_TX_PI, min: 0, max: 0xffff, step: 1, DEFAULT_RDS_PI); |
1486 | sdev->rds_pty = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1487 | V4L2_CID_RDS_TX_PTY, min: 0, max: 31, step: 1, DEFAULT_RDS_PTY); |
1488 | sdev->rds_compressed = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1489 | V4L2_CID_RDS_TX_COMPRESSED, min: 0, max: 1, step: 1, def: 0); |
1490 | sdev->rds_art_head = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1491 | V4L2_CID_RDS_TX_ARTIFICIAL_HEAD, min: 0, max: 1, step: 1, def: 0); |
1492 | sdev->rds_stereo = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1493 | V4L2_CID_RDS_TX_MONO_STEREO, min: 0, max: 1, step: 1, def: 1); |
1494 | sdev->rds_tp = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1495 | V4L2_CID_RDS_TX_TRAFFIC_PROGRAM, min: 0, max: 1, step: 1, def: 0); |
1496 | sdev->rds_ta = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1497 | V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT, min: 0, max: 1, step: 1, def: 0); |
1498 | sdev->rds_ms = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1499 | V4L2_CID_RDS_TX_MUSIC_SPEECH, min: 0, max: 1, step: 1, def: 1); |
1500 | sdev->rds_dyn_pty = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1501 | V4L2_CID_RDS_TX_DYNAMIC_PTY, min: 0, max: 1, step: 1, def: 0); |
1502 | sdev->rds_alt_freqs_enable = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1503 | V4L2_CID_RDS_TX_ALT_FREQS_ENABLE, min: 0, max: 1, step: 1, def: 0); |
1504 | sdev->rds_alt_freqs = v4l2_ctrl_new_custom(hdl, cfg: &si4713_alt_freqs_ctrl, NULL); |
1505 | sdev->rds_deviation = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1506 | V4L2_CID_RDS_TX_DEVIATION, min: 0, MAX_RDS_DEVIATION, |
1507 | step: 10, DEFAULT_RDS_DEVIATION); |
1508 | /* |
1509 | * Report step as 8. From RDS spec, psname |
1510 | * should be 8. But there are receivers which scroll strings |
1511 | * sized as 8xN. |
1512 | */ |
1513 | sdev->rds_ps_name = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1514 | V4L2_CID_RDS_TX_PS_NAME, min: 0, MAX_RDS_PS_NAME, step: 8, def: 0); |
1515 | /* |
1516 | * Report step as 32 (2A block). From RDS spec, |
1517 | * radio text should be 32 for 2A block. But there are receivers |
1518 | * which scroll strings sized as 32xN. Setting default to 32. |
1519 | */ |
1520 | sdev->rds_radio_text = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1521 | V4L2_CID_RDS_TX_RADIO_TEXT, min: 0, MAX_RDS_RADIO_TEXT, step: 32, def: 0); |
1522 | |
1523 | sdev->limiter_enabled = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1524 | V4L2_CID_AUDIO_LIMITER_ENABLED, min: 0, max: 1, step: 1, def: 1); |
1525 | sdev->limiter_release_time = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1526 | V4L2_CID_AUDIO_LIMITER_RELEASE_TIME, min: 250, |
1527 | MAX_LIMITER_RELEASE_TIME, step: 10, DEFAULT_LIMITER_RTIME); |
1528 | sdev->limiter_deviation = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1529 | V4L2_CID_AUDIO_LIMITER_DEVIATION, min: 0, |
1530 | MAX_LIMITER_DEVIATION, step: 10, DEFAULT_LIMITER_DEV); |
1531 | |
1532 | sdev->compression_enabled = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1533 | V4L2_CID_AUDIO_COMPRESSION_ENABLED, min: 0, max: 1, step: 1, def: 1); |
1534 | sdev->compression_gain = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1535 | V4L2_CID_AUDIO_COMPRESSION_GAIN, min: 0, MAX_ACOMP_GAIN, step: 1, |
1536 | DEFAULT_ACOMP_GAIN); |
1537 | sdev->compression_threshold = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1538 | V4L2_CID_AUDIO_COMPRESSION_THRESHOLD, |
1539 | MIN_ACOMP_THRESHOLD, MAX_ACOMP_THRESHOLD, step: 1, |
1540 | DEFAULT_ACOMP_THRESHOLD); |
1541 | sdev->compression_attack_time = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1542 | V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME, min: 0, |
1543 | MAX_ACOMP_ATTACK_TIME, step: 500, DEFAULT_ACOMP_ATIME); |
1544 | sdev->compression_release_time = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1545 | V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME, min: 100000, |
1546 | MAX_ACOMP_RELEASE_TIME, step: 100000, DEFAULT_ACOMP_RTIME); |
1547 | |
1548 | sdev->pilot_tone_enabled = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1549 | V4L2_CID_PILOT_TONE_ENABLED, min: 0, max: 1, step: 1, def: 1); |
1550 | sdev->pilot_tone_deviation = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1551 | V4L2_CID_PILOT_TONE_DEVIATION, min: 0, MAX_PILOT_DEVIATION, |
1552 | step: 10, DEFAULT_PILOT_DEVIATION); |
1553 | sdev->pilot_tone_freq = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1554 | V4L2_CID_PILOT_TONE_FREQUENCY, min: 0, MAX_PILOT_FREQUENCY, |
1555 | step: 1, DEFAULT_PILOT_FREQUENCY); |
1556 | |
1557 | sdev->tune_preemphasis = v4l2_ctrl_new_std_menu(hdl, ops: &si4713_ctrl_ops, |
1558 | V4L2_CID_TUNE_PREEMPHASIS, |
1559 | max: V4L2_PREEMPHASIS_75_uS, mask: 0, def: V4L2_PREEMPHASIS_50_uS); |
1560 | sdev->tune_pwr_level = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1561 | V4L2_CID_TUNE_POWER_LEVEL, min: 0, SI4713_MAX_POWER, |
1562 | step: 1, DEFAULT_POWER_LEVEL); |
1563 | sdev->tune_ant_cap = v4l2_ctrl_new_std(hdl, ops: &si4713_ctrl_ops, |
1564 | V4L2_CID_TUNE_ANTENNA_CAPACITOR, min: 0, SI4713_MAX_ANTCAP, |
1565 | step: 1, def: 0); |
1566 | |
1567 | if (hdl->error) { |
1568 | rval = hdl->error; |
1569 | goto free_ctrls; |
1570 | } |
1571 | v4l2_ctrl_cluster(ncontrols: 29, controls: &sdev->mute); |
1572 | sdev->sd.ctrl_handler = hdl; |
1573 | |
1574 | if (client->irq) { |
1575 | rval = devm_request_irq(dev: &client->dev, irq: client->irq, |
1576 | handler: si4713_handler, IRQF_TRIGGER_FALLING, |
1577 | devname: client->name, dev_id: sdev); |
1578 | if (rval < 0) { |
1579 | v4l2_err(&sdev->sd, "Could not request IRQ\n" ); |
1580 | goto free_ctrls; |
1581 | } |
1582 | v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n" ); |
1583 | } else { |
1584 | v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n" ); |
1585 | } |
1586 | |
1587 | rval = si4713_initialize(sdev); |
1588 | if (rval < 0) { |
1589 | v4l2_err(&sdev->sd, "Failed to probe device information.\n" ); |
1590 | goto free_ctrls; |
1591 | } |
1592 | |
1593 | if (!np && (!pdata || !pdata->is_platform_device)) |
1594 | return 0; |
1595 | |
1596 | si4713_pdev = platform_device_alloc(name: "radio-si4713" , id: -1); |
1597 | if (!si4713_pdev) { |
1598 | rval = -ENOMEM; |
1599 | goto put_main_pdev; |
1600 | } |
1601 | |
1602 | si4713_pdev_pdata.subdev = client; |
1603 | rval = platform_device_add_data(pdev: si4713_pdev, data: &si4713_pdev_pdata, |
1604 | size: sizeof(si4713_pdev_pdata)); |
1605 | if (rval) |
1606 | goto put_main_pdev; |
1607 | |
1608 | rval = platform_device_add(pdev: si4713_pdev); |
1609 | if (rval) |
1610 | goto put_main_pdev; |
1611 | |
1612 | sdev->pd = si4713_pdev; |
1613 | |
1614 | return 0; |
1615 | |
1616 | put_main_pdev: |
1617 | platform_device_put(pdev: si4713_pdev); |
1618 | v4l2_device_unregister_subdev(sd: &sdev->sd); |
1619 | free_ctrls: |
1620 | v4l2_ctrl_handler_free(hdl); |
1621 | exit: |
1622 | return rval; |
1623 | } |
1624 | |
1625 | /* si4713_remove - remove the device */ |
1626 | static void si4713_remove(struct i2c_client *client) |
1627 | { |
1628 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
1629 | struct si4713_device *sdev = to_si4713_device(sd); |
1630 | |
1631 | platform_device_unregister(sdev->pd); |
1632 | |
1633 | if (sdev->power_state) |
1634 | si4713_set_power_state(sdev, POWER_DOWN); |
1635 | |
1636 | v4l2_device_unregister_subdev(sd); |
1637 | v4l2_ctrl_handler_free(hdl: sd->ctrl_handler); |
1638 | } |
1639 | |
1640 | /* si4713_i2c_driver - i2c driver interface */ |
1641 | static const struct i2c_device_id si4713_id[] = { |
1642 | { "si4713" , 0 }, |
1643 | { }, |
1644 | }; |
1645 | MODULE_DEVICE_TABLE(i2c, si4713_id); |
1646 | |
1647 | #if IS_ENABLED(CONFIG_OF) |
1648 | static const struct of_device_id si4713_of_match[] = { |
1649 | { .compatible = "silabs,si4713" }, |
1650 | { }, |
1651 | }; |
1652 | MODULE_DEVICE_TABLE(of, si4713_of_match); |
1653 | #endif |
1654 | |
1655 | static struct i2c_driver si4713_i2c_driver = { |
1656 | .driver = { |
1657 | .name = "si4713" , |
1658 | .of_match_table = of_match_ptr(si4713_of_match), |
1659 | }, |
1660 | .probe = si4713_probe, |
1661 | .remove = si4713_remove, |
1662 | .id_table = si4713_id, |
1663 | }; |
1664 | |
1665 | module_i2c_driver(si4713_i2c_driver); |
1666 | |