2 * drivers/media/radio/si4713-i2c.c
4 * Silicon Labs Si4713 FM Radio Transmitter I2C commands.
6 * Copyright (c) 2009 Nokia Corporation
7 * Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
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.
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.
20 #include <linux/completion.h>
21 #include <linux/delay.h>
22 #include <linux/err.h>
23 #include <linux/interrupt.h>
24 #include <linux/i2c.h>
25 #include <linux/slab.h>
26 #include <linux/gpio.h>
27 #include <linux/module.h>
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-ioctl.h>
30 #include <media/v4l2-common.h>
34 /* module parameters */
36 module_param(debug, int, S_IRUGO | S_IWUSR);
37 MODULE_PARM_DESC(debug, "Debug level (0 - 2)");
39 MODULE_LICENSE("GPL");
40 MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>");
41 MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter");
42 MODULE_VERSION("0.0.1");
44 #define DEFAULT_RDS_PI 0x00
45 #define DEFAULT_RDS_PTY 0x00
46 #define DEFAULT_RDS_DEVIATION 0x00C8
47 #define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003
48 #define DEFAULT_LIMITER_RTIME 0x1392
49 #define DEFAULT_LIMITER_DEV 0x102CA
50 #define DEFAULT_PILOT_FREQUENCY 0x4A38
51 #define DEFAULT_PILOT_DEVIATION 0x1A5E
52 #define DEFAULT_ACOMP_ATIME 0x0000
53 #define DEFAULT_ACOMP_RTIME 0xF4240L
54 #define DEFAULT_ACOMP_GAIN 0x0F
55 #define DEFAULT_ACOMP_THRESHOLD (-0x28)
56 #define DEFAULT_MUTE 0x01
57 #define DEFAULT_POWER_LEVEL 88
58 #define DEFAULT_FREQUENCY 8800
59 #define DEFAULT_PREEMPHASIS FMPE_EU
60 #define DEFAULT_TUNE_RNL 0xFF
62 #define to_si4713_device(sd) container_of(sd, struct si4713_device, sd)
64 /* frequency domain transformation (using times 10 to avoid floats) */
65 #define FREQDEV_UNIT 100000
66 #define FREQV4L2_MULTI 625
67 #define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI)
68 #define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT)
69 #define FREQ_RANGE_LOW 7600
70 #define FREQ_RANGE_HIGH 10800
75 #define RDS_BLOCK_CLEAR 0x03
76 #define RDS_BLOCK_LOAD 0x04
77 #define RDS_RADIOTEXT_2A 0x20
78 #define RDS_RADIOTEXT_BLK_SIZE 4
79 #define RDS_RADIOTEXT_INDEX_MAX 0x0F
80 #define RDS_CARRIAGE_RETURN 0x0D
82 #define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0))
84 #define get_status_bit(p, b, m) (((p) & (m)) >> (b))
85 #define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b)))
87 #define ATTACK_TIME_UNIT 500
89 #define POWER_OFF 0x00
92 #define msb(x) ((u8)((u16) x >> 8))
93 #define lsb(x) ((u8)((u16) x & 0x00FF))
94 #define compose_u16(msb, lsb) (((u16)msb << 8) | lsb)
95 #define check_command_failed(status) (!(status & SI4713_CTS) || \
96 (status & SI4713_ERR))
98 #define set_mute(p) ((p & 1) | ((p & 1) << 1));
101 #define DBG_BUFFER(device, message, buffer, size) \
104 char str[(size)*5]; \
105 for (i = 0; i < size; i++) \
106 sprintf(str + i * 5, " 0x%02x", buffer[i]); \
107 v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \
110 #define DBG_BUFFER(device, message, buffer, size)
114 * Values for limiter release time (sorted by second column)
118 static long limiter_times[] = {
142 * Values for audio compression release time (sorted by second column)
146 static unsigned long acomp_rtimes[] = {
155 * Values for preemphasis (sorted by second column)
159 static unsigned long preemphasis_values[] = {
160 FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED,
161 FMPE_EU, V4L2_PREEMPHASIS_50_uS,
162 FMPE_USA, V4L2_PREEMPHASIS_75_uS,
165 static int usecs_to_dev(unsigned long usecs, unsigned long const array[],
171 for (i = 0; i < size / 2; i++)
172 if (array[(i * 2) + 1] >= usecs) {
180 /* si4713_handler: IRQ handler, just complete work */
181 static irqreturn_t si4713_handler(int irq, void *dev)
183 struct si4713_device *sdev = dev;
185 v4l2_dbg(2, debug, &sdev->sd,
186 "%s: sending signal to completion work.\n", __func__);
187 complete(&sdev->work);
193 * si4713_send_command - sends a command to si4713 and waits its response
194 * @sdev: si4713_device structure for the device we are communicating
195 * @command: command id
196 * @args: command arguments we are sending (up to 7)
197 * @argn: actual size of @args
198 * @response: buffer to place the expected response from the device (up to 15)
199 * @respn: actual size of @response
200 * @usecs: amount of time to wait before reading the response (in usecs)
202 static int si4713_send_command(struct si4713_device *sdev, const u8 command,
203 const u8 args[], const int argn,
204 u8 response[], const int respn, const int usecs)
206 struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
207 unsigned long until_jiffies;
208 u8 data1[MAX_ARGS + 1];
211 if (!client->adapter)
214 /* First send the command and its arguments */
216 memcpy(data1 + 1, args, argn);
217 DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1);
219 err = i2c_master_send(client, data1, argn + 1);
220 if (err != argn + 1) {
221 v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n",
223 return err < 0 ? err : -EIO;
226 until_jiffies = jiffies + usecs_to_jiffies(usecs) + 1;
228 /* Wait response from interrupt */
230 if (!wait_for_completion_timeout(&sdev->work,
231 usecs_to_jiffies(usecs) + 1))
233 "(%s) Device took too much time to answer.\n",
238 err = i2c_master_recv(client, response, respn);
241 "Error %d while reading response for command 0x%02x\n",
243 return err < 0 ? err : -EIO;
246 DBG_BUFFER(&sdev->sd, "Response", response, respn);
247 if (!check_command_failed(response[0]))
253 usleep_range(usecs, 1000);
255 usleep_range(1000, 2000);
256 } while (time_is_after_jiffies(until_jiffies));
262 * si4713_read_property - reads a si4713 property
263 * @sdev: si4713_device structure for the device we are communicating
264 * @prop: property identification number
265 * @pv: property value to be returned on success
267 static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv)
270 u8 val[SI4713_GET_PROP_NRESP];
273 * .Second byte = property's MSB
274 * .Third byte = property's LSB
276 const u8 args[SI4713_GET_PROP_NARGS] = {
282 err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY,
283 args, ARRAY_SIZE(args), val,
284 ARRAY_SIZE(val), DEFAULT_TIMEOUT);
289 *pv = compose_u16(val[2], val[3]);
291 v4l2_dbg(1, debug, &sdev->sd,
292 "%s: property=0x%02x value=0x%02x status=0x%02x\n",
293 __func__, prop, *pv, val[0]);
299 * si4713_write_property - modifies a si4713 property
300 * @sdev: si4713_device structure for the device we are communicating
301 * @prop: property identification number
302 * @val: new value for that property
304 static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val)
307 u8 resp[SI4713_SET_PROP_NRESP];
310 * .Second byte = property's MSB
311 * .Third byte = property's LSB
312 * .Fourth byte = value's MSB
313 * .Fifth byte = value's LSB
315 const u8 args[SI4713_SET_PROP_NARGS] = {
323 rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY,
324 args, ARRAY_SIZE(args),
325 resp, ARRAY_SIZE(resp),
331 v4l2_dbg(1, debug, &sdev->sd,
332 "%s: property=0x%02x value=0x%02x status=0x%02x\n",
333 __func__, prop, val, resp[0]);
336 * As there is no command response for SET_PROPERTY,
337 * wait Tcomp time to finish before proceed, in order
338 * to have property properly set.
340 msleep(TIMEOUT_SET_PROPERTY);
346 * si4713_powerup - Powers the device up
347 * @sdev: si4713_device structure for the device we are communicating
349 static int si4713_powerup(struct si4713_device *sdev)
351 struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
353 u8 resp[SI4713_PWUP_NRESP];
355 * .First byte = Enabled interrupts and boot function
356 * .Second byte = Input operation mode
358 u8 args[SI4713_PWUP_NARGS] = {
359 SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX,
360 SI4713_PWUP_OPMOD_ANALOG,
363 if (sdev->power_state)
367 err = regulator_enable(sdev->vdd);
369 v4l2_err(&sdev->sd, "Failed to enable vdd: %d\n", err);
375 err = regulator_enable(sdev->vio);
377 v4l2_err(&sdev->sd, "Failed to enable vio: %d\n", err);
382 if (sdev->gpio_reset) {
384 gpiod_set_value(sdev->gpio_reset, 1);
388 args[0] |= SI4713_PWUP_CTSIEN;
390 err = si4713_send_command(sdev, SI4713_CMD_POWER_UP,
391 args, ARRAY_SIZE(args),
392 resp, ARRAY_SIZE(resp),
396 v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n",
398 v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n");
399 sdev->power_state = POWER_ON;
402 err = si4713_write_property(sdev, SI4713_GPO_IEN,
403 SI4713_STC_INT | SI4713_CTS);
406 gpiod_set_value(sdev->gpio_reset, 0);
410 err = regulator_disable(sdev->vdd);
412 v4l2_err(&sdev->sd, "Failed to disable vdd: %d\n", err);
416 err = regulator_disable(sdev->vio);
418 v4l2_err(&sdev->sd, "Failed to disable vio: %d\n", err);
425 * si4713_powerdown - Powers the device down
426 * @sdev: si4713_device structure for the device we are communicating
428 static int si4713_powerdown(struct si4713_device *sdev)
431 u8 resp[SI4713_PWDN_NRESP];
433 if (!sdev->power_state)
436 err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN,
438 resp, ARRAY_SIZE(resp),
442 v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n",
444 v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n");
445 if (sdev->gpio_reset)
446 gpiod_set_value(sdev->gpio_reset, 0);
449 err = regulator_disable(sdev->vdd);
452 "Failed to disable vdd: %d\n", err);
457 err = regulator_disable(sdev->vio);
460 "Failed to disable vio: %d\n", err);
463 sdev->power_state = POWER_OFF;
470 * si4713_checkrev - Checks if we are treating a device with the correct rev.
471 * @sdev: si4713_device structure for the device we are communicating
473 static int si4713_checkrev(struct si4713_device *sdev)
475 struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
477 u8 resp[SI4713_GETREV_NRESP];
479 rval = si4713_send_command(sdev, SI4713_CMD_GET_REV,
481 resp, ARRAY_SIZE(resp),
487 if (resp[1] == SI4713_PRODUCT_NUMBER) {
488 v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n",
489 client->addr << 1, client->adapter->name);
491 v4l2_err(&sdev->sd, "Invalid product number 0x%X\n", resp[1]);
498 * si4713_wait_stc - Waits STC interrupt and clears status bits. Useful
499 * for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS
500 * @sdev: si4713_device structure for the device we are communicating
501 * @usecs: timeout to wait for STC interrupt signal
503 static int si4713_wait_stc(struct si4713_device *sdev, const int usecs)
505 struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
506 u8 resp[SI4713_GET_STATUS_NRESP];
507 unsigned long start_jiffies = jiffies;
511 !wait_for_completion_timeout(&sdev->work, usecs_to_jiffies(usecs) + 1))
513 "(%s) Device took too much time to answer.\n", __func__);
516 /* Clear status bits */
517 err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS,
519 resp, ARRAY_SIZE(resp),
521 /* The USB device returns errors when it waits for the
522 * STC bit to be set. Hence polling */
524 v4l2_dbg(1, debug, &sdev->sd,
525 "%s: status bits: 0x%02x\n", __func__, resp[0]);
527 if (resp[0] & SI4713_STC_INT)
530 if (jiffies_to_usecs(jiffies - start_jiffies) > usecs)
531 return err < 0 ? err : -EIO;
532 /* We sleep here for 3-4 ms in order to avoid flooding the device
533 * with USB requests. The si4713 USB driver was developed
534 * by reverse engineering the Windows USB driver. The windows
535 * driver also has a ~2.5 ms delay between responses. */
536 usleep_range(3000, 4000);
541 * si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning
542 * frequency between 76 and 108 MHz in 10 kHz units and
544 * @sdev: si4713_device structure for the device we are communicating
545 * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz)
547 static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency)
550 u8 val[SI4713_TXFREQ_NRESP];
553 * .Second byte = frequency's MSB
554 * .Third byte = frequency's LSB
556 const u8 args[SI4713_TXFREQ_NARGS] = {
562 err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ,
563 args, ARRAY_SIZE(args), val,
564 ARRAY_SIZE(val), DEFAULT_TIMEOUT);
569 v4l2_dbg(1, debug, &sdev->sd,
570 "%s: frequency=0x%02x status=0x%02x\n", __func__,
573 err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE);
577 return compose_u16(args[1], args[2]);
581 * si4713_tx_tune_power - Sets the RF voltage level between 88 and 120 dBuV in
582 * 1 dB units. A value of 0x00 indicates off. The command
583 * also sets the antenna tuning capacitance. A value of 0
584 * indicates autotuning, and a value of 1 - 191 indicates
585 * a manual override, which results in a tuning
586 * capacitance of 0.25 pF x @antcap.
587 * @sdev: si4713_device structure for the device we are communicating
588 * @power: tuning power (88 - 120 dBuV, unit/step 1 dB)
589 * @antcap: value of antenna tuning capacitor (0 - 191)
591 static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power,
595 u8 val[SI4713_TXPWR_NRESP];
599 * .Third byte = power
600 * .Fourth byte = antcap
602 u8 args[SI4713_TXPWR_NARGS] = {
609 /* Map power values 1-87 to MIN_POWER (88) */
610 if (power > 0 && power < SI4713_MIN_POWER)
611 args[2] = power = SI4713_MIN_POWER;
613 err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER,
614 args, ARRAY_SIZE(args), val,
615 ARRAY_SIZE(val), DEFAULT_TIMEOUT);
620 v4l2_dbg(1, debug, &sdev->sd,
621 "%s: power=0x%02x antcap=0x%02x status=0x%02x\n",
622 __func__, power, antcap, val[0]);
624 return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER);
628 * si4713_tx_tune_measure - Enters receive mode and measures the received noise
629 * level in units of dBuV on the selected frequency.
630 * The Frequency must be between 76 and 108 MHz in 10 kHz
631 * units and steps of 50 kHz. The command also sets the
632 * antenna tuning capacitance. A value of 0 means
633 * autotuning, and a value of 1 to 191 indicates manual
635 * @sdev: si4713_device structure for the device we are communicating
636 * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz)
637 * @antcap: value of antenna tuning capacitor (0 - 191)
639 static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency,
643 u8 val[SI4713_TXMEA_NRESP];
646 * .Second byte = frequency's MSB
647 * .Third byte = frequency's LSB
648 * .Fourth byte = antcap
650 const u8 args[SI4713_TXMEA_NARGS] = {
657 sdev->tune_rnl = DEFAULT_TUNE_RNL;
659 if (antcap > SI4713_MAX_ANTCAP)
662 err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE,
663 args, ARRAY_SIZE(args), val,
664 ARRAY_SIZE(val), DEFAULT_TIMEOUT);
669 v4l2_dbg(1, debug, &sdev->sd,
670 "%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n",
671 __func__, frequency, antcap, val[0]);
673 return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE);
677 * si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or
678 * tx_tune_power commands. This command return the current
679 * frequency, output voltage in dBuV, the antenna tunning
680 * capacitance value and the received noise level. The
681 * command also clears the stcint interrupt bit when the
682 * first bit of its arguments is high.
683 * @sdev: si4713_device structure for the device we are communicating
684 * @intack: 0x01 to clear the seek/tune complete interrupt status indicator.
685 * @frequency: returned frequency
686 * @power: returned power
687 * @antcap: returned antenna capacitance
688 * @noise: returned noise level
690 static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack,
691 u16 *frequency, u8 *power,
692 u8 *antcap, u8 *noise)
695 u8 val[SI4713_TXSTATUS_NRESP];
697 * .First byte = intack bit
699 const u8 args[SI4713_TXSTATUS_NARGS] = {
700 intack & SI4713_INTACK_MASK,
703 err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS,
704 args, ARRAY_SIZE(args), val,
705 ARRAY_SIZE(val), DEFAULT_TIMEOUT);
708 v4l2_dbg(1, debug, &sdev->sd,
709 "%s: status=0x%02x\n", __func__, val[0]);
710 *frequency = compose_u16(val[2], val[3]);
711 sdev->frequency = *frequency;
715 v4l2_dbg(1, debug, &sdev->sd,
716 "%s: response: %d x 10 kHz (power %d, antcap %d, rnl %d)\n",
717 __func__, *frequency, *power, *antcap, *noise);
724 * si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer.
725 * @sdev: si4713_device structure for the device we are communicating
726 * @mode: the buffer operation mode.
730 * @cbleft: returns the number of available circular buffer blocks minus the
731 * number of used circular buffer blocks.
733 static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb,
734 u16 rdsc, u16 rdsd, s8 *cbleft)
737 u8 val[SI4713_RDSBUFF_NRESP];
739 const u8 args[SI4713_RDSBUFF_NARGS] = {
740 mode & SI4713_RDSBUFF_MODE_MASK,
749 err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF,
750 args, ARRAY_SIZE(args), val,
751 ARRAY_SIZE(val), DEFAULT_TIMEOUT);
754 v4l2_dbg(1, debug, &sdev->sd,
755 "%s: status=0x%02x\n", __func__, val[0]);
756 *cbleft = (s8)val[2] - val[3];
757 v4l2_dbg(1, debug, &sdev->sd,
758 "%s: response: interrupts 0x%02x cb avail: %d cb used %d fifo avail %d fifo used %d\n",
759 __func__, val[1], val[2], val[3], val[4], val[5]);
766 * si4713_tx_rds_ps - Loads the program service buffer.
767 * @sdev: si4713_device structure for the device we are communicating
768 * @psid: program service id to be loaded.
769 * @pschar: assumed 4 size char array to be loaded into the program service
771 static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid,
772 unsigned char *pschar)
775 u8 val[SI4713_RDSPS_NRESP];
777 const u8 args[SI4713_RDSPS_NARGS] = {
778 psid & SI4713_RDSPS_PSID_MASK,
785 err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS,
786 args, ARRAY_SIZE(args), val,
787 ARRAY_SIZE(val), DEFAULT_TIMEOUT);
792 v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]);
797 static int si4713_set_power_state(struct si4713_device *sdev, u8 value)
800 return si4713_powerup(sdev);
801 return si4713_powerdown(sdev);
804 static int si4713_set_mute(struct si4713_device *sdev, u16 mute)
808 mute = set_mute(mute);
810 if (sdev->power_state)
811 rval = si4713_write_property(sdev,
812 SI4713_TX_LINE_INPUT_MUTE, mute);
817 static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name)
822 /* We want to clear the whole thing */
823 if (!strlen(ps_name))
824 memset(ps_name, 0, MAX_RDS_PS_NAME + 1);
826 if (sdev->power_state) {
827 /* Write the new ps name and clear the padding */
828 for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) {
829 rval = si4713_tx_rds_ps(sdev, (i / (RDS_BLOCK / 2)),
835 /* Setup the size to be sent */
837 len = strlen(ps_name) - 1;
841 rval = si4713_write_property(sdev,
842 SI4713_TX_RDS_PS_MESSAGE_COUNT,
843 rds_ps_nblocks(len));
847 rval = si4713_write_property(sdev,
848 SI4713_TX_RDS_PS_REPEAT_COUNT,
849 DEFAULT_RDS_PS_REPEAT_COUNT * 2);
857 static int si4713_set_rds_radio_text(struct si4713_device *sdev, const char *rt)
859 static const char cr[RDS_RADIOTEXT_BLK_SIZE] = { RDS_CARRIAGE_RETURN, 0 };
862 u8 b_index = 0, cr_inserted = 0;
865 if (!sdev->power_state)
868 rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left);
876 /* RDS spec says that if the last block isn't used,
877 * then apply a carriage return
879 if (t_index < (RDS_RADIOTEXT_INDEX_MAX * RDS_RADIOTEXT_BLK_SIZE)) {
880 for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) {
881 if (!rt[t_index + i] ||
882 rt[t_index + i] == RDS_CARRIAGE_RETURN) {
890 rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD,
891 compose_u16(RDS_RADIOTEXT_2A, b_index++),
892 compose_u16(rt[t_index], rt[t_index + 1]),
893 compose_u16(rt[t_index + 2], rt[t_index + 3]),
898 t_index += RDS_RADIOTEXT_BLK_SIZE;
908 * si4713_update_tune_status - update properties from tx_tune_status
909 * command. Must be called with sdev->mutex held.
910 * @sdev: si4713_device structure for the device we are communicating
912 static int si4713_update_tune_status(struct si4713_device *sdev)
916 u8 p = 0, a = 0, n = 0;
918 rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n);
923 /* TODO: check that power_level and antenna_capacitor really are not
924 changed by the hardware. If they are, then these controls should become
926 sdev->power_level = p;
927 sdev->antenna_capacitor = a;*/
934 static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id,
935 s32 *bit, s32 *mask, u16 *property, int *mul,
936 unsigned long **table, int *size)
941 /* FM_TX class controls */
942 case V4L2_CID_RDS_TX_PI:
943 *property = SI4713_TX_RDS_PI;
946 case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
947 *property = SI4713_TX_ACOMP_THRESHOLD;
950 case V4L2_CID_AUDIO_COMPRESSION_GAIN:
951 *property = SI4713_TX_ACOMP_GAIN;
954 case V4L2_CID_PILOT_TONE_FREQUENCY:
955 *property = SI4713_TX_PILOT_FREQUENCY;
958 case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
959 *property = SI4713_TX_ACOMP_ATTACK_TIME;
960 *mul = ATTACK_TIME_UNIT;
962 case V4L2_CID_PILOT_TONE_DEVIATION:
963 *property = SI4713_TX_PILOT_DEVIATION;
966 case V4L2_CID_AUDIO_LIMITER_DEVIATION:
967 *property = SI4713_TX_AUDIO_DEVIATION;
970 case V4L2_CID_RDS_TX_DEVIATION:
971 *property = SI4713_TX_RDS_DEVIATION;
975 case V4L2_CID_RDS_TX_PTY:
976 *property = SI4713_TX_RDS_PS_MISC;
980 case V4L2_CID_RDS_TX_DYNAMIC_PTY:
981 *property = SI4713_TX_RDS_PS_MISC;
985 case V4L2_CID_RDS_TX_COMPRESSED:
986 *property = SI4713_TX_RDS_PS_MISC;
990 case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:
991 *property = SI4713_TX_RDS_PS_MISC;
995 case V4L2_CID_RDS_TX_MONO_STEREO:
996 *property = SI4713_TX_RDS_PS_MISC;
1000 case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:
1001 *property = SI4713_TX_RDS_PS_MISC;
1005 case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT:
1006 *property = SI4713_TX_RDS_PS_MISC;
1010 case V4L2_CID_RDS_TX_MUSIC_SPEECH:
1011 *property = SI4713_TX_RDS_PS_MISC;
1015 case V4L2_CID_AUDIO_LIMITER_ENABLED:
1016 *property = SI4713_TX_ACOMP_ENABLE;
1020 case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
1021 *property = SI4713_TX_ACOMP_ENABLE;
1025 case V4L2_CID_PILOT_TONE_ENABLED:
1026 *property = SI4713_TX_COMPONENT_ENABLE;
1031 case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
1032 *property = SI4713_TX_LIMITER_RELEASE_TIME;
1033 *table = limiter_times;
1034 *size = ARRAY_SIZE(limiter_times);
1036 case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
1037 *property = SI4713_TX_ACOMP_RELEASE_TIME;
1038 *table = acomp_rtimes;
1039 *size = ARRAY_SIZE(acomp_rtimes);
1041 case V4L2_CID_TUNE_PREEMPHASIS:
1042 *property = SI4713_TX_PREEMPHASIS;
1043 *table = preemphasis_values;
1044 *size = ARRAY_SIZE(preemphasis_values);
1055 static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f);
1056 static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *);
1058 * si4713_setup - Sets the device up with current configuration.
1059 * @sdev: si4713_device structure for the device we are communicating
1061 static int si4713_setup(struct si4713_device *sdev)
1063 struct v4l2_frequency f;
1064 struct v4l2_modulator vm;
1067 /* Device procedure needs to set frequency first */
1069 f.frequency = sdev->frequency ? sdev->frequency : DEFAULT_FREQUENCY;
1070 f.frequency = si4713_to_v4l2(f.frequency);
1071 rval = si4713_s_frequency(&sdev->sd, &f);
1075 vm.txsubchans = V4L2_TUNER_SUB_STEREO;
1077 vm.txsubchans = V4L2_TUNER_SUB_MONO;
1078 if (sdev->rds_enabled)
1079 vm.txsubchans |= V4L2_TUNER_SUB_RDS;
1080 si4713_s_modulator(&sdev->sd, &vm);
1086 * si4713_initialize - Sets the device up with default configuration.
1087 * @sdev: si4713_device structure for the device we are communicating
1089 static int si4713_initialize(struct si4713_device *sdev)
1093 rval = si4713_set_power_state(sdev, POWER_ON);
1097 rval = si4713_checkrev(sdev);
1101 rval = si4713_set_power_state(sdev, POWER_OFF);
1105 sdev->frequency = DEFAULT_FREQUENCY;
1107 sdev->tune_rnl = DEFAULT_TUNE_RNL;
1111 /* si4713_s_ctrl - set the value of a control */
1112 static int si4713_s_ctrl(struct v4l2_ctrl *ctrl)
1114 struct si4713_device *sdev =
1115 container_of(ctrl->handler, struct si4713_device, ctrl_handler);
1117 s32 bit = 0, mask = 0;
1120 unsigned long *table = NULL;
1126 if (ctrl->id != V4L2_CID_AUDIO_MUTE)
1130 ret = si4713_set_mute(sdev, ctrl->val);
1132 ret = si4713_set_power_state(sdev, POWER_DOWN);
1135 ret = si4713_set_power_state(sdev, POWER_UP);
1137 ret = si4713_set_mute(sdev, ctrl->val);
1139 ret = si4713_setup(sdev);
1145 if (!sdev->power_state)
1148 for (c = 1; !ret && c < ctrl->ncontrols; c++) {
1149 ctrl = ctrl->cluster[c];
1151 if (!force && !ctrl->is_new)
1155 case V4L2_CID_RDS_TX_PS_NAME:
1156 ret = si4713_set_rds_ps_name(sdev, ctrl->p_new.p_char);
1159 case V4L2_CID_RDS_TX_RADIO_TEXT:
1160 ret = si4713_set_rds_radio_text(sdev, ctrl->p_new.p_char);
1163 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1164 /* don't handle this control if we force setting all
1165 * controls since in that case it will be handled by
1166 * V4L2_CID_TUNE_POWER_LEVEL. */
1170 case V4L2_CID_TUNE_POWER_LEVEL:
1171 ret = si4713_tx_tune_power(sdev,
1172 sdev->tune_pwr_level->val, sdev->tune_ant_cap->val);
1174 /* Make sure we don't set this twice */
1175 sdev->tune_ant_cap->is_new = false;
1176 sdev->tune_pwr_level->is_new = false;
1180 case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:
1181 case V4L2_CID_RDS_TX_ALT_FREQS:
1182 if (sdev->rds_alt_freqs_enable->val) {
1183 val = sdev->rds_alt_freqs->p_new.p_u32[0];
1184 val = val / 100 - 876 + 0xe101;
1188 ret = si4713_write_property(sdev, SI4713_TX_RDS_PS_AF, val);
1192 ret = si4713_choose_econtrol_action(sdev, ctrl->id, &bit,
1193 &mask, &property, &mul, &table, &size);
1201 ret = usecs_to_dev(val, table, size);
1209 ret = si4713_read_property(sdev, property, &val);
1212 val = set_bits(val, ctrl->val, bit, mask);
1215 ret = si4713_write_property(sdev, property, val);
1227 /* si4713_ioctl - deal with private ioctls (only rnl for now) */
1228 static long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
1230 struct si4713_device *sdev = to_si4713_device(sd);
1231 struct si4713_rnl *rnl = arg;
1239 case SI4713_IOC_MEASURE_RNL:
1240 frequency = v4l2_to_si4713(rnl->frequency);
1242 if (sdev->power_state) {
1243 /* Set desired measurement frequency */
1244 rval = si4713_tx_tune_measure(sdev, frequency, 0);
1247 /* get results from tune status */
1248 rval = si4713_update_tune_status(sdev);
1252 rnl->rnl = sdev->tune_rnl;
1257 rval = -ENOIOCTLCMD;
1263 /* si4713_g_modulator - get modulator attributes */
1264 static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm)
1266 struct si4713_device *sdev = to_si4713_device(sd);
1275 strncpy(vm->name, "FM Modulator", 32);
1276 vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW |
1277 V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_CONTROLS;
1279 /* Report current frequency range limits */
1280 vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW);
1281 vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH);
1283 if (sdev->power_state) {
1286 rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE,
1291 sdev->stereo = get_status_bit(comp_en, 1, 1 << 1);
1294 /* Report current audio mode: mono or stereo */
1296 vm->txsubchans = V4L2_TUNER_SUB_STEREO;
1298 vm->txsubchans = V4L2_TUNER_SUB_MONO;
1300 /* Report rds feature status */
1301 if (sdev->rds_enabled)
1302 vm->txsubchans |= V4L2_TUNER_SUB_RDS;
1304 vm->txsubchans &= ~V4L2_TUNER_SUB_RDS;
1309 /* si4713_s_modulator - set modulator attributes */
1310 static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *vm)
1312 struct si4713_device *sdev = to_si4713_device(sd);
1323 /* Set audio mode: mono or stereo */
1324 if (vm->txsubchans & V4L2_TUNER_SUB_STEREO)
1326 else if (vm->txsubchans & V4L2_TUNER_SUB_MONO)
1331 rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS);
1333 if (sdev->power_state) {
1334 rval = si4713_read_property(sdev,
1335 SI4713_TX_COMPONENT_ENABLE, &p);
1339 p = set_bits(p, stereo, 1, 1 << 1);
1340 p = set_bits(p, rds, 2, 1 << 2);
1342 rval = si4713_write_property(sdev,
1343 SI4713_TX_COMPONENT_ENABLE, p);
1348 sdev->stereo = stereo;
1349 sdev->rds_enabled = rds;
1354 /* si4713_g_frequency - get tuner or modulator radio frequency */
1355 static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
1357 struct si4713_device *sdev = to_si4713_device(sd);
1363 if (sdev->power_state) {
1367 rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n);
1371 sdev->frequency = freq;
1374 f->frequency = si4713_to_v4l2(sdev->frequency);
1379 /* si4713_s_frequency - set tuner or modulator radio frequency */
1380 static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f)
1382 struct si4713_device *sdev = to_si4713_device(sd);
1384 u16 frequency = v4l2_to_si4713(f->frequency);
1389 /* Check frequency range */
1390 frequency = clamp_t(u16, frequency, FREQ_RANGE_LOW, FREQ_RANGE_HIGH);
1392 if (sdev->power_state) {
1393 rval = si4713_tx_tune_freq(sdev, frequency);
1399 sdev->frequency = frequency;
1404 static const struct v4l2_ctrl_ops si4713_ctrl_ops = {
1405 .s_ctrl = si4713_s_ctrl,
1408 static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = {
1409 .ioctl = si4713_ioctl,
1412 static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = {
1413 .g_frequency = si4713_g_frequency,
1414 .s_frequency = si4713_s_frequency,
1415 .g_modulator = si4713_g_modulator,
1416 .s_modulator = si4713_s_modulator,
1419 static const struct v4l2_subdev_ops si4713_subdev_ops = {
1420 .core = &si4713_subdev_core_ops,
1421 .tuner = &si4713_subdev_tuner_ops,
1424 static const struct v4l2_ctrl_config si4713_alt_freqs_ctrl = {
1425 .id = V4L2_CID_RDS_TX_ALT_FREQS,
1426 .type = V4L2_CTRL_TYPE_U32,
1432 .elem_size = sizeof(u32),
1436 * I2C driver interface
1438 /* si4713_probe - probe for the device */
1439 static int si4713_probe(struct i2c_client *client,
1440 const struct i2c_device_id *id)
1442 struct si4713_device *sdev;
1443 struct v4l2_ctrl_handler *hdl;
1444 struct si4713_platform_data *pdata = client->dev.platform_data;
1445 struct device_node *np = client->dev.of_node;
1446 struct radio_si4713_platform_data si4713_pdev_pdata;
1447 struct platform_device *si4713_pdev;
1450 sdev = devm_kzalloc(&client->dev, sizeof(*sdev), GFP_KERNEL);
1452 dev_err(&client->dev, "Failed to alloc video device.\n");
1457 sdev->gpio_reset = devm_gpiod_get_optional(&client->dev, "reset",
1459 if (IS_ERR(sdev->gpio_reset)) {
1460 rval = PTR_ERR(sdev->gpio_reset);
1461 dev_err(&client->dev, "Failed to request gpio: %d\n", rval);
1465 sdev->vdd = devm_regulator_get_optional(&client->dev, "vdd");
1466 if (IS_ERR(sdev->vdd)) {
1467 rval = PTR_ERR(sdev->vdd);
1468 if (rval == -EPROBE_DEFER)
1471 dev_dbg(&client->dev, "no vdd regulator found: %d\n", rval);
1475 sdev->vio = devm_regulator_get_optional(&client->dev, "vio");
1476 if (IS_ERR(sdev->vio)) {
1477 rval = PTR_ERR(sdev->vio);
1478 if (rval == -EPROBE_DEFER)
1481 dev_dbg(&client->dev, "no vio regulator found: %d\n", rval);
1485 v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops);
1487 init_completion(&sdev->work);
1489 hdl = &sdev->ctrl_handler;
1490 v4l2_ctrl_handler_init(hdl, 20);
1491 sdev->mute = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1492 V4L2_CID_AUDIO_MUTE, 0, 1, 1, DEFAULT_MUTE);
1494 sdev->rds_pi = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1495 V4L2_CID_RDS_TX_PI, 0, 0xffff, 1, DEFAULT_RDS_PI);
1496 sdev->rds_pty = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1497 V4L2_CID_RDS_TX_PTY, 0, 31, 1, DEFAULT_RDS_PTY);
1498 sdev->rds_compressed = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1499 V4L2_CID_RDS_TX_COMPRESSED, 0, 1, 1, 0);
1500 sdev->rds_art_head = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1501 V4L2_CID_RDS_TX_ARTIFICIAL_HEAD, 0, 1, 1, 0);
1502 sdev->rds_stereo = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1503 V4L2_CID_RDS_TX_MONO_STEREO, 0, 1, 1, 1);
1504 sdev->rds_tp = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1505 V4L2_CID_RDS_TX_TRAFFIC_PROGRAM, 0, 1, 1, 0);
1506 sdev->rds_ta = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1507 V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT, 0, 1, 1, 0);
1508 sdev->rds_ms = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1509 V4L2_CID_RDS_TX_MUSIC_SPEECH, 0, 1, 1, 1);
1510 sdev->rds_dyn_pty = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1511 V4L2_CID_RDS_TX_DYNAMIC_PTY, 0, 1, 1, 0);
1512 sdev->rds_alt_freqs_enable = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1513 V4L2_CID_RDS_TX_ALT_FREQS_ENABLE, 0, 1, 1, 0);
1514 sdev->rds_alt_freqs = v4l2_ctrl_new_custom(hdl, &si4713_alt_freqs_ctrl, NULL);
1515 sdev->rds_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1516 V4L2_CID_RDS_TX_DEVIATION, 0, MAX_RDS_DEVIATION,
1517 10, DEFAULT_RDS_DEVIATION);
1519 * Report step as 8. From RDS spec, psname
1520 * should be 8. But there are receivers which scroll strings
1523 sdev->rds_ps_name = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1524 V4L2_CID_RDS_TX_PS_NAME, 0, MAX_RDS_PS_NAME, 8, 0);
1526 * Report step as 32 (2A block). From RDS spec,
1527 * radio text should be 32 for 2A block. But there are receivers
1528 * which scroll strings sized as 32xN. Setting default to 32.
1530 sdev->rds_radio_text = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1531 V4L2_CID_RDS_TX_RADIO_TEXT, 0, MAX_RDS_RADIO_TEXT, 32, 0);
1533 sdev->limiter_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1534 V4L2_CID_AUDIO_LIMITER_ENABLED, 0, 1, 1, 1);
1535 sdev->limiter_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1536 V4L2_CID_AUDIO_LIMITER_RELEASE_TIME, 250,
1537 MAX_LIMITER_RELEASE_TIME, 10, DEFAULT_LIMITER_RTIME);
1538 sdev->limiter_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1539 V4L2_CID_AUDIO_LIMITER_DEVIATION, 0,
1540 MAX_LIMITER_DEVIATION, 10, DEFAULT_LIMITER_DEV);
1542 sdev->compression_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1543 V4L2_CID_AUDIO_COMPRESSION_ENABLED, 0, 1, 1, 1);
1544 sdev->compression_gain = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1545 V4L2_CID_AUDIO_COMPRESSION_GAIN, 0, MAX_ACOMP_GAIN, 1,
1546 DEFAULT_ACOMP_GAIN);
1547 sdev->compression_threshold = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1548 V4L2_CID_AUDIO_COMPRESSION_THRESHOLD,
1549 MIN_ACOMP_THRESHOLD, MAX_ACOMP_THRESHOLD, 1,
1550 DEFAULT_ACOMP_THRESHOLD);
1551 sdev->compression_attack_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1552 V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME, 0,
1553 MAX_ACOMP_ATTACK_TIME, 500, DEFAULT_ACOMP_ATIME);
1554 sdev->compression_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1555 V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME, 100000,
1556 MAX_ACOMP_RELEASE_TIME, 100000, DEFAULT_ACOMP_RTIME);
1558 sdev->pilot_tone_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1559 V4L2_CID_PILOT_TONE_ENABLED, 0, 1, 1, 1);
1560 sdev->pilot_tone_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1561 V4L2_CID_PILOT_TONE_DEVIATION, 0, MAX_PILOT_DEVIATION,
1562 10, DEFAULT_PILOT_DEVIATION);
1563 sdev->pilot_tone_freq = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1564 V4L2_CID_PILOT_TONE_FREQUENCY, 0, MAX_PILOT_FREQUENCY,
1565 1, DEFAULT_PILOT_FREQUENCY);
1567 sdev->tune_preemphasis = v4l2_ctrl_new_std_menu(hdl, &si4713_ctrl_ops,
1568 V4L2_CID_TUNE_PREEMPHASIS,
1569 V4L2_PREEMPHASIS_75_uS, 0, V4L2_PREEMPHASIS_50_uS);
1570 sdev->tune_pwr_level = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1571 V4L2_CID_TUNE_POWER_LEVEL, 0, SI4713_MAX_POWER,
1572 1, DEFAULT_POWER_LEVEL);
1573 sdev->tune_ant_cap = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
1574 V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0, SI4713_MAX_ANTCAP,
1581 v4l2_ctrl_cluster(29, &sdev->mute);
1582 sdev->sd.ctrl_handler = hdl;
1585 rval = devm_request_irq(&client->dev, client->irq,
1586 si4713_handler, IRQF_TRIGGER_FALLING,
1587 client->name, sdev);
1589 v4l2_err(&sdev->sd, "Could not request IRQ\n");
1592 v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n");
1594 v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n");
1597 rval = si4713_initialize(sdev);
1599 v4l2_err(&sdev->sd, "Failed to probe device information.\n");
1603 if (!np && (!pdata || !pdata->is_platform_device))
1606 si4713_pdev = platform_device_alloc("radio-si4713", -1);
1612 si4713_pdev_pdata.subdev = client;
1613 rval = platform_device_add_data(si4713_pdev, &si4713_pdev_pdata,
1614 sizeof(si4713_pdev_pdata));
1618 rval = platform_device_add(si4713_pdev);
1622 sdev->pd = si4713_pdev;
1627 platform_device_put(si4713_pdev);
1628 v4l2_device_unregister_subdev(&sdev->sd);
1630 v4l2_ctrl_handler_free(hdl);
1635 /* si4713_remove - remove the device */
1636 static int si4713_remove(struct i2c_client *client)
1638 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1639 struct si4713_device *sdev = to_si4713_device(sd);
1641 platform_device_unregister(sdev->pd);
1643 if (sdev->power_state)
1644 si4713_set_power_state(sdev, POWER_DOWN);
1646 v4l2_device_unregister_subdev(sd);
1647 v4l2_ctrl_handler_free(sd->ctrl_handler);
1652 /* si4713_i2c_driver - i2c driver interface */
1653 static const struct i2c_device_id si4713_id[] = {
1657 MODULE_DEVICE_TABLE(i2c, si4713_id);
1659 #if IS_ENABLED(CONFIG_OF)
1660 static const struct of_device_id si4713_of_match[] = {
1661 { .compatible = "silabs,si4713" },
1664 MODULE_DEVICE_TABLE(of, si4713_of_match);
1667 static struct i2c_driver si4713_i2c_driver = {
1670 .of_match_table = of_match_ptr(si4713_of_match),
1672 .probe = si4713_probe,
1673 .remove = si4713_remove,
1674 .id_table = si4713_id,
1677 module_i2c_driver(si4713_i2c_driver);