1 // SPDX-License-Identifier: GPL-2.0-only
3 * Driver for the Texas Instruments WL1273 FM radio.
5 * Copyright (C) 2011 Nokia Corporation
6 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
9 #include <linux/delay.h>
10 #include <linux/firmware.h>
11 #include <linux/interrupt.h>
12 #include <linux/mfd/wl1273-core.h>
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <media/v4l2-common.h>
16 #include <media/v4l2-ctrls.h>
17 #include <media/v4l2-device.h>
18 #include <media/v4l2-ioctl.h>
20 #define DRIVER_DESC "Wl1273 FM Radio"
22 #define WL1273_POWER_SET_OFF 0
23 #define WL1273_POWER_SET_FM BIT(0)
24 #define WL1273_POWER_SET_RDS BIT(1)
25 #define WL1273_POWER_SET_RETENTION BIT(4)
27 #define WL1273_PUPD_SET_OFF 0x00
28 #define WL1273_PUPD_SET_ON 0x01
29 #define WL1273_PUPD_SET_RETENTION 0x10
31 #define WL1273_FREQ(x) (x * 10000 / 625)
32 #define WL1273_INV_FREQ(x) (x * 625 / 10000)
35 * static int radio_nr - The number of the radio device
40 module_param(radio_nr, int, 0);
41 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
43 struct wl1273_device {
47 unsigned int preemphasis;
49 unsigned int tx_power;
50 unsigned int rx_frequency;
51 unsigned int tx_frequency;
52 unsigned int rangelow;
53 unsigned int rangehigh;
60 wait_queue_head_t read_queue;
61 struct mutex lock; /* for serializing fm radio operations */
62 struct completion busy;
64 unsigned char *buffer;
65 unsigned int buf_size;
66 unsigned int rd_index;
67 unsigned int wr_index;
69 /* Selected interrupts */
73 struct v4l2_ctrl_handler ctrl_handler;
74 struct v4l2_device v4l2dev;
75 struct video_device videodev;
77 struct wl1273_core *core;
80 unsigned int rds_users;
83 #define WL1273_IRQ_MASK (WL1273_FR_EVENT | \
87 * static unsigned int rds_buf - the number of RDS buffer blocks used.
89 * The default number is 100.
91 static unsigned int rds_buf = 100;
92 module_param(rds_buf, uint, 0);
93 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
95 static int wl1273_fm_write_fw(struct wl1273_core *core,
98 struct i2c_client *client = core->client;
102 msg.addr = client->addr;
105 for (i = 0; i <= len; i++) {
110 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
112 r = i2c_transfer(client->adapter, &msg, 1);
113 if (r < 0 && i < len + 1)
117 dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
118 dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
120 /* Last transfer always fails. */
121 if (i == len || r == 1)
127 #define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status)
128 #define WL1273_RDS_CORRECTABLE_ERROR (1 << 3)
129 #define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4)
131 static int wl1273_fm_rds(struct wl1273_device *radio)
133 struct wl1273_core *core = radio->core;
134 struct i2c_client *client = core->client;
136 u8 b0 = WL1273_RDS_DATA_GET, status;
137 struct v4l2_rds_data rds = { 0, 0, 0 };
138 struct i2c_msg msg[] = {
140 .addr = client->addr,
146 .addr = client->addr,
154 if (core->mode != WL1273_MODE_RX)
157 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
161 if ((val & 0x01) == 0) {
162 /* RDS decoder not synchronized */
166 /* copy all four RDS blocks to internal buffer */
168 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
169 if (r != ARRAY_SIZE(msg)) {
170 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
171 ": %s: read_rds error r == %i)\n",
177 if (!WL1273_FIFO_HAS_DATA(status))
180 /* copy bits 0-2 (the block ID) to bits 3-5 */
181 rds.block = V4L2_RDS_BLOCK_MSK & status;
182 rds.block |= rds.block << 3;
184 /* copy the error bits to standard positions */
185 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
186 rds.block |= V4L2_RDS_BLOCK_ERROR;
187 rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
188 } else if (WL1273_RDS_CORRECTABLE_ERROR & status) {
189 rds.block &= ~V4L2_RDS_BLOCK_ERROR;
190 rds.block |= V4L2_RDS_BLOCK_CORRECTED;
193 /* copy RDS block to internal buffer */
194 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
195 radio->wr_index += 3;
197 /* wrap write pointer */
198 if (radio->wr_index >= radio->buf_size)
201 /* check for overflow & start over */
202 if (radio->wr_index == radio->rd_index) {
203 dev_dbg(radio->dev, "RDS OVERFLOW");
209 } while (WL1273_FIFO_HAS_DATA(status));
211 /* wake up read queue */
212 if (radio->wr_index != radio->rd_index)
213 wake_up_interruptible(&radio->read_queue);
218 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
220 struct wl1273_device *radio = dev_id;
221 struct wl1273_core *core = radio->core;
225 r = core->read(core, WL1273_FLAG_GET, &flags);
229 if (flags & WL1273_BL_EVENT) {
230 radio->irq_received = flags;
231 dev_dbg(radio->dev, "IRQ: BL\n");
234 if (flags & WL1273_RDS_EVENT) {
237 wl1273_fm_rds(radio);
240 if (flags & WL1273_BBLK_EVENT)
241 dev_dbg(radio->dev, "IRQ: BBLK\n");
243 if (flags & WL1273_LSYNC_EVENT)
244 dev_dbg(radio->dev, "IRQ: LSYNC\n");
246 if (flags & WL1273_LEV_EVENT) {
249 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
254 dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
257 if (flags & WL1273_IFFR_EVENT)
258 dev_dbg(radio->dev, "IRQ: IFFR\n");
260 if (flags & WL1273_PI_EVENT)
261 dev_dbg(radio->dev, "IRQ: PI\n");
263 if (flags & WL1273_PD_EVENT)
264 dev_dbg(radio->dev, "IRQ: PD\n");
266 if (flags & WL1273_STIC_EVENT)
267 dev_dbg(radio->dev, "IRQ: STIC\n");
269 if (flags & WL1273_MAL_EVENT)
270 dev_dbg(radio->dev, "IRQ: MAL\n");
272 if (flags & WL1273_POW_ENB_EVENT) {
273 complete(&radio->busy);
274 dev_dbg(radio->dev, "NOT BUSY\n");
275 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
278 if (flags & WL1273_SCAN_OVER_EVENT)
279 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
281 if (flags & WL1273_ERROR_EVENT)
282 dev_dbg(radio->dev, "IRQ: ERROR\n");
284 if (flags & WL1273_FR_EVENT) {
287 dev_dbg(radio->dev, "IRQ: FR:\n");
289 if (core->mode == WL1273_MODE_RX) {
290 r = core->write(core, WL1273_TUNER_MODE_SET,
291 TUNER_MODE_STOP_SEARCH);
294 "%s: TUNER_MODE_SET fails: %d\n",
299 r = core->read(core, WL1273_FREQ_SET, &freq);
303 if (radio->band == WL1273_BAND_JAPAN)
304 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
307 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
310 * The driver works better with this msleep,
311 * the documentation doesn't mention it.
313 usleep_range(10000, 15000);
315 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
318 r = core->read(core, WL1273_CHANL_SET, &freq);
322 dev_dbg(radio->dev, "%dkHz\n", freq);
324 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
328 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
329 complete(&radio->busy);
334 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
336 struct wl1273_core *core = radio->core;
340 if (freq < WL1273_BAND_TX_LOW) {
342 "Frequency out of range: %d < %d\n", freq,
347 if (freq > WL1273_BAND_TX_HIGH) {
349 "Frequency out of range: %d > %d\n", freq,
350 WL1273_BAND_TX_HIGH);
355 * The driver works better with this sleep,
356 * the documentation doesn't mention it.
358 usleep_range(5000, 10000);
360 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
362 /* Set the current tx channel */
363 r = core->write(core, WL1273_CHANL_SET, freq / 10);
367 reinit_completion(&radio->busy);
369 /* wait for the FR IRQ */
370 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
374 dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);
376 /* Enable the output power */
377 r = core->write(core, WL1273_POWER_ENB_SET, 1);
381 reinit_completion(&radio->busy);
383 /* wait for the POWER_ENB IRQ */
384 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
388 radio->tx_frequency = freq;
389 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);
394 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
396 struct wl1273_core *core = radio->core;
400 if (freq < radio->rangelow) {
402 "Frequency out of range: %d < %d\n", freq,
408 if (freq > radio->rangehigh) {
410 "Frequency out of range: %d > %d\n", freq,
416 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
418 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
420 if (radio->band == WL1273_BAND_JAPAN)
421 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
423 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
425 r = core->write(core, WL1273_FREQ_SET, f);
427 dev_err(radio->dev, "FREQ_SET fails\n");
431 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
433 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
437 reinit_completion(&radio->busy);
439 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
441 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
447 radio->rx_frequency = freq;
453 static int wl1273_fm_get_freq(struct wl1273_device *radio)
455 struct wl1273_core *core = radio->core;
460 if (core->mode == WL1273_MODE_RX) {
461 r = core->read(core, WL1273_FREQ_SET, &f);
465 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
466 if (radio->band == WL1273_BAND_JAPAN)
467 freq = WL1273_BAND_JAPAN_LOW + 50 * f;
469 freq = WL1273_BAND_OTHER_LOW + 50 * f;
471 r = core->read(core, WL1273_CHANL_SET, &f);
482 * wl1273_fm_upload_firmware_patch() - Upload the firmware.
483 * @radio: A pointer to the device struct.
485 * The firmware file consists of arrays of bytes where the first byte
486 * gives the array length. The first byte in the file gives the
487 * number of these arrays.
489 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
491 struct wl1273_core *core = radio->core;
492 unsigned int packet_num;
493 const struct firmware *fw_p;
494 const char *fw_name = "radio-wl1273-fw.bin";
495 struct device *dev = radio->dev;
499 dev_dbg(dev, "%s:\n", __func__);
502 * Uploading the firmware patch is not always necessary,
503 * so we only print an info message.
505 if (request_firmware(&fw_p, fw_name, dev)) {
506 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
511 ptr = (__u8 *) fw_p->data;
513 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
515 r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
517 dev_err(dev, "FW upload error: %d\n", r);
521 /* ignore possible error here */
522 core->write(core, WL1273_RESET, 0);
524 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
526 release_firmware(fw_p);
530 static int wl1273_fm_stop(struct wl1273_device *radio)
532 struct wl1273_core *core = radio->core;
534 if (core->mode == WL1273_MODE_RX) {
535 int r = core->write(core, WL1273_POWER_SET,
536 WL1273_POWER_SET_OFF);
538 dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
540 } else if (core->mode == WL1273_MODE_TX) {
541 int r = core->write(core, WL1273_PUPD_SET,
542 WL1273_PUPD_SET_OFF);
545 "%s: PUPD_SET fails: %d\n", __func__, r);
548 if (core->pdata->disable) {
549 core->pdata->disable();
550 dev_dbg(radio->dev, "Back to reset\n");
556 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
558 struct wl1273_core *core = radio->core;
559 struct wl1273_fm_platform_data *pdata = core->pdata;
560 struct device *dev = radio->dev;
563 if (pdata->enable && core->mode == WL1273_MODE_OFF) {
564 dev_dbg(radio->dev, "Out of reset\n");
570 if (new_mode == WL1273_MODE_RX) {
571 u16 val = WL1273_POWER_SET_FM;
574 val |= WL1273_POWER_SET_RDS;
576 /* If this fails try again */
577 r = core->write(core, WL1273_POWER_SET, val);
581 r = core->write(core, WL1273_POWER_SET, val);
583 dev_err(dev, "%s: POWER_SET fails\n", __func__);
588 /* rds buffer configuration */
592 } else if (new_mode == WL1273_MODE_TX) {
593 /* If this fails try again once */
594 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
597 r = core->write(core, WL1273_PUPD_SET,
600 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
606 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
608 dev_err(dev, "%s: RDS_DATA_ENB ON fails\n",
613 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
615 dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n",
621 dev_warn(dev, "%s: Illegal mode.\n", __func__);
624 if (core->mode == WL1273_MODE_OFF) {
625 r = wl1273_fm_upload_firmware_patch(radio);
627 dev_warn(dev, "Firmware upload failed.\n");
630 * Sometimes the chip is in a wrong power state at this point.
631 * So we set the power once again.
633 if (new_mode == WL1273_MODE_RX) {
634 u16 val = WL1273_POWER_SET_FM;
637 val |= WL1273_POWER_SET_RDS;
639 r = core->write(core, WL1273_POWER_SET, val);
641 dev_err(dev, "%s: POWER_SET fails\n", __func__);
644 } else if (new_mode == WL1273_MODE_TX) {
645 r = core->write(core, WL1273_PUPD_SET,
648 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
659 dev_dbg(dev, "%s: return: %d\n", __func__, r);
663 static int wl1273_fm_suspend(struct wl1273_device *radio)
665 struct wl1273_core *core = radio->core;
668 /* Cannot go from OFF to SUSPENDED */
669 if (core->mode == WL1273_MODE_RX)
670 r = core->write(core, WL1273_POWER_SET,
671 WL1273_POWER_SET_RETENTION);
672 else if (core->mode == WL1273_MODE_TX)
673 r = core->write(core, WL1273_PUPD_SET,
674 WL1273_PUPD_SET_RETENTION);
679 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
687 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
689 struct wl1273_core *core = radio->core;
690 struct device *dev = radio->dev;
694 dev_dbg(dev, "%s\n", __func__);
695 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
697 old_mode = core->mode;
698 if (mode & radio->forbidden) {
706 r = wl1273_fm_start(radio, mode);
708 dev_err(dev, "%s: Cannot start.\n", __func__);
709 wl1273_fm_stop(radio);
714 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
716 dev_err(dev, "INT_MASK_SET fails.\n");
720 /* remember previous settings */
721 if (mode == WL1273_MODE_RX) {
722 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
724 dev_err(dev, "set freq fails: %d.\n", r);
728 r = core->set_volume(core, core->volume);
730 dev_err(dev, "set volume fails: %d.\n", r);
734 dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
737 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
739 dev_err(dev, "set freq fails: %d.\n", r);
744 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
746 r = core->set_audio(core, core->audio_mode);
748 dev_err(dev, "Cannot set audio mode.\n");
751 case WL1273_MODE_OFF:
752 r = wl1273_fm_stop(radio);
754 dev_err(dev, "%s: Off fails: %d\n", __func__, r);
756 core->mode = WL1273_MODE_OFF;
760 case WL1273_MODE_SUSPENDED:
761 r = wl1273_fm_suspend(radio);
763 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
765 core->mode = WL1273_MODE_SUSPENDED;
770 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
776 core->mode = old_mode;
781 static int wl1273_fm_set_seek(struct wl1273_device *radio,
782 unsigned int wrap_around,
783 unsigned int seek_upward,
786 struct wl1273_core *core = radio->core;
788 unsigned int dir = (seek_upward == 0) ? 0 : 1;
791 f = radio->rx_frequency;
792 dev_dbg(radio->dev, "rx_frequency: %d\n", f);
794 if (dir && f + radio->spacing <= radio->rangehigh)
795 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
796 else if (dir && wrap_around)
797 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
798 else if (f - radio->spacing >= radio->rangelow)
799 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
800 else if (wrap_around)
801 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
806 if (level < SCHAR_MIN || level > SCHAR_MAX)
809 reinit_completion(&radio->busy);
810 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
812 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
816 dev_dbg(radio->dev, "%s\n", __func__);
818 r = core->write(core, WL1273_SEARCH_LVL_SET, level);
822 r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
826 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
830 /* wait for the FR IRQ */
831 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
832 if (!(radio->irq_received & WL1273_BL_EVENT)) {
837 radio->irq_received &= ~WL1273_BL_EVENT;
843 dev_dbg(radio->dev, "Wrap around in HW seek.\n");
848 f = radio->rangehigh;
850 r = wl1273_fm_set_rx_freq(radio, f);
854 reinit_completion(&radio->busy);
855 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
857 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
861 /* wait for the FR IRQ */
862 if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))
865 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
870 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.
871 * @radio: A pointer to the device struct.
873 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
875 struct wl1273_core *core = radio->core;
876 struct device *dev = radio->dev;
880 if (core->mode == WL1273_MODE_OFF ||
881 core->mode == WL1273_MODE_SUSPENDED)
884 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
886 dev_err(dev, "%s: read error: %d\n", __func__, r);
895 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
896 * @radio: A pointer to the device struct.
897 * @preemphasis: The new pre-amphasis value.
899 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
900 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
902 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
903 unsigned int preemphasis)
905 struct wl1273_core *core = radio->core;
909 if (core->mode == WL1273_MODE_OFF ||
910 core->mode == WL1273_MODE_SUSPENDED)
913 mutex_lock(&core->lock);
915 switch (preemphasis) {
916 case V4L2_PREEMPHASIS_DISABLED:
919 case V4L2_PREEMPHASIS_50_uS:
922 case V4L2_PREEMPHASIS_75_uS:
930 r = core->write(core, WL1273_PREMPH_SET, em);
934 radio->preemphasis = preemphasis;
937 mutex_unlock(&core->lock);
941 static int wl1273_fm_rds_on(struct wl1273_device *radio)
943 struct wl1273_core *core = radio->core;
946 dev_dbg(radio->dev, "%s\n", __func__);
950 r = core->write(core, WL1273_POWER_SET,
951 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
955 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
957 dev_err(radio->dev, "set freq fails: %d.\n", r);
962 static int wl1273_fm_rds_off(struct wl1273_device *radio)
964 struct wl1273_core *core = radio->core;
970 radio->irq_flags &= ~WL1273_RDS_EVENT;
972 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
976 /* Service pending read */
977 wake_up_interruptible(&radio->read_queue);
979 dev_dbg(radio->dev, "%s\n", __func__);
981 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
985 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
987 dev_err(radio->dev, "set freq fails: %d.\n", r);
989 dev_dbg(radio->dev, "%s: exiting...\n", __func__);
994 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
997 struct wl1273_core *core = radio->core;
999 if (core->mode == WL1273_MODE_OFF ||
1000 core->mode == WL1273_MODE_SUSPENDED)
1003 if (new_mode == WL1273_RDS_RESET) {
1004 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1008 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1009 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1010 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1011 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1012 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1013 r = wl1273_fm_rds_off(radio);
1014 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1015 r = wl1273_fm_rds_on(radio);
1017 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1018 __func__, new_mode);
1023 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1028 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1029 size_t count, loff_t *ppos)
1031 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1032 struct wl1273_core *core = radio->core;
1036 dev_dbg(radio->dev, "%s\n", __func__);
1038 if (core->mode != WL1273_MODE_TX)
1041 if (radio->rds_users == 0) {
1042 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1046 if (mutex_lock_interruptible(&core->lock))
1049 * Multiple processes can open the device, but only
1050 * one gets to write to it.
1052 if (radio->owner && radio->owner != file) {
1056 radio->owner = file;
1064 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1066 if (copy_from_user(radio->write_buf + 1, buf, val)) {
1071 dev_dbg(radio->dev, "Count: %d\n", val);
1072 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1074 radio->write_buf[0] = WL1273_RDS_DATA_SET;
1075 core->write_data(core, radio->write_buf, val + 1);
1079 mutex_unlock(&core->lock);
1084 static __poll_t wl1273_fm_fops_poll(struct file *file,
1085 struct poll_table_struct *pts)
1087 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1088 struct wl1273_core *core = radio->core;
1090 if (radio->owner && radio->owner != file)
1093 radio->owner = file;
1095 if (core->mode == WL1273_MODE_RX) {
1096 poll_wait(file, &radio->read_queue, pts);
1098 if (radio->rd_index != radio->wr_index)
1099 return EPOLLIN | EPOLLRDNORM;
1101 } else if (core->mode == WL1273_MODE_TX) {
1102 return EPOLLOUT | EPOLLWRNORM;
1108 static int wl1273_fm_fops_open(struct file *file)
1110 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1111 struct wl1273_core *core = radio->core;
1114 dev_dbg(radio->dev, "%s\n", __func__);
1116 if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1117 !radio->rds_users) {
1118 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1120 if (mutex_lock_interruptible(&core->lock))
1123 radio->irq_flags |= WL1273_RDS_EVENT;
1125 r = core->write(core, WL1273_INT_MASK_SET,
1128 mutex_unlock(&core->lock);
1134 mutex_unlock(&core->lock);
1140 static int wl1273_fm_fops_release(struct file *file)
1142 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1143 struct wl1273_core *core = radio->core;
1146 dev_dbg(radio->dev, "%s\n", __func__);
1148 if (radio->rds_users > 0) {
1150 if (radio->rds_users == 0) {
1151 mutex_lock(&core->lock);
1153 radio->irq_flags &= ~WL1273_RDS_EVENT;
1155 if (core->mode == WL1273_MODE_RX) {
1156 r = core->write(core,
1157 WL1273_INT_MASK_SET,
1160 mutex_unlock(&core->lock);
1164 mutex_unlock(&core->lock);
1168 if (file == radio->owner)
1169 radio->owner = NULL;
1174 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1175 size_t count, loff_t *ppos)
1178 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1179 struct wl1273_core *core = radio->core;
1180 unsigned int block_count = 0;
1183 dev_dbg(radio->dev, "%s\n", __func__);
1185 if (core->mode != WL1273_MODE_RX)
1188 if (radio->rds_users == 0) {
1189 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1193 if (mutex_lock_interruptible(&core->lock))
1197 * Multiple processes can open the device, but only
1198 * one at a time gets read access.
1200 if (radio->owner && radio->owner != file) {
1204 radio->owner = file;
1206 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1208 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1210 } else if (val == 0) {
1211 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1216 /* block if no new data available */
1217 while (radio->wr_index == radio->rd_index) {
1218 if (file->f_flags & O_NONBLOCK) {
1223 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1224 if (wait_event_interruptible(radio->read_queue,
1226 radio->rd_index) < 0) {
1232 /* calculate block count from byte count */
1233 count /= RDS_BLOCK_SIZE;
1235 /* copy RDS blocks from the internal buffer and to user buffer */
1236 while (block_count < count) {
1237 if (radio->rd_index == radio->wr_index)
1240 /* always transfer complete RDS blocks */
1241 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1245 /* increment and wrap the read pointer */
1246 radio->rd_index += RDS_BLOCK_SIZE;
1247 if (radio->rd_index >= radio->buf_size)
1248 radio->rd_index = 0;
1250 /* increment counters */
1252 buf += RDS_BLOCK_SIZE;
1253 r += RDS_BLOCK_SIZE;
1257 dev_dbg(radio->dev, "%s: exit\n", __func__);
1258 mutex_unlock(&core->lock);
1263 static const struct v4l2_file_operations wl1273_fops = {
1264 .owner = THIS_MODULE,
1265 .read = wl1273_fm_fops_read,
1266 .write = wl1273_fm_fops_write,
1267 .poll = wl1273_fm_fops_poll,
1268 .unlocked_ioctl = video_ioctl2,
1269 .open = wl1273_fm_fops_open,
1270 .release = wl1273_fm_fops_release,
1273 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1274 struct v4l2_capability *capability)
1276 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1278 dev_dbg(radio->dev, "%s\n", __func__);
1280 strscpy(capability->driver, WL1273_FM_DRIVER_NAME,
1281 sizeof(capability->driver));
1282 strscpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1283 sizeof(capability->card));
1284 strscpy(capability->bus_info, radio->bus_type,
1285 sizeof(capability->bus_info));
1289 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1292 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1294 dev_dbg(radio->dev, "%s\n", __func__);
1301 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1304 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1306 dev_dbg(radio->dev, "%s\n", __func__);
1315 * wl1273_fm_set_tx_power() - Set the transmission power value.
1316 * @radio: A pointer to the device struct.
1317 * @power: The new power value.
1319 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1321 struct wl1273_core *core = radio->core;
1324 if (core->mode == WL1273_MODE_OFF ||
1325 core->mode == WL1273_MODE_SUSPENDED)
1328 mutex_lock(&core->lock);
1330 /* Convert the dBuV value to chip presentation */
1331 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1335 radio->tx_power = power;
1338 mutex_unlock(&core->lock);
1342 #define WL1273_SPACING_50kHz 1
1343 #define WL1273_SPACING_100kHz 2
1344 #define WL1273_SPACING_200kHz 4
1346 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1347 unsigned int spacing)
1349 struct wl1273_core *core = radio->core;
1353 r = core->write(core, WL1273_SCAN_SPACING_SET,
1354 WL1273_SPACING_100kHz);
1355 radio->spacing = 100;
1356 } else if (spacing - 50000 < 25000) {
1357 r = core->write(core, WL1273_SCAN_SPACING_SET,
1358 WL1273_SPACING_50kHz);
1359 radio->spacing = 50;
1360 } else if (spacing - 100000 < 50000) {
1361 r = core->write(core, WL1273_SCAN_SPACING_SET,
1362 WL1273_SPACING_100kHz);
1363 radio->spacing = 100;
1365 r = core->write(core, WL1273_SCAN_SPACING_SET,
1366 WL1273_SPACING_200kHz);
1367 radio->spacing = 200;
1373 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1375 struct wl1273_device *radio = ctrl->priv;
1376 struct wl1273_core *core = radio->core;
1378 dev_dbg(radio->dev, "%s\n", __func__);
1380 if (mutex_lock_interruptible(&core->lock))
1384 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1385 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1389 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1390 __func__, ctrl->id);
1394 mutex_unlock(&core->lock);
1399 #define WL1273_MUTE_SOFT_ENABLE (1 << 0)
1400 #define WL1273_MUTE_AC (1 << 1)
1401 #define WL1273_MUTE_HARD_LEFT (1 << 2)
1402 #define WL1273_MUTE_HARD_RIGHT (1 << 3)
1403 #define WL1273_MUTE_SOFT_FORCE (1 << 4)
1405 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1407 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1410 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1412 struct wl1273_device *radio = to_radio(ctrl);
1413 struct wl1273_core *core = radio->core;
1416 dev_dbg(radio->dev, "%s\n", __func__);
1419 case V4L2_CID_AUDIO_MUTE:
1420 if (mutex_lock_interruptible(&core->lock))
1423 if (core->mode == WL1273_MODE_RX && ctrl->val)
1424 r = core->write(core,
1425 WL1273_MUTE_STATUS_SET,
1426 WL1273_MUTE_HARD_LEFT |
1427 WL1273_MUTE_HARD_RIGHT);
1428 else if (core->mode == WL1273_MODE_RX)
1429 r = core->write(core,
1430 WL1273_MUTE_STATUS_SET, 0x0);
1431 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1432 r = core->write(core, WL1273_MUTE, 1);
1433 else if (core->mode == WL1273_MODE_TX)
1434 r = core->write(core, WL1273_MUTE, 0);
1436 mutex_unlock(&core->lock);
1439 case V4L2_CID_AUDIO_VOLUME:
1441 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1443 r = core->set_volume(core, core->volume);
1446 case V4L2_CID_TUNE_PREEMPHASIS:
1447 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1450 case V4L2_CID_TUNE_POWER_LEVEL:
1451 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1455 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1456 __func__, ctrl->id);
1460 dev_dbg(radio->dev, "%s\n", __func__);
1464 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1465 struct v4l2_audio *audio)
1467 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1469 dev_dbg(radio->dev, "%s\n", __func__);
1471 if (audio->index > 1)
1474 strscpy(audio->name, "Radio", sizeof(audio->name));
1475 audio->capability = V4L2_AUDCAP_STEREO;
1480 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1481 const struct v4l2_audio *audio)
1483 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1485 dev_dbg(radio->dev, "%s\n", __func__);
1487 if (audio->index != 0)
1493 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1494 #define WL1273_RDS_SYNCHRONIZED 1
1496 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1497 struct v4l2_tuner *tuner)
1499 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1500 struct wl1273_core *core = radio->core;
1504 dev_dbg(radio->dev, "%s\n", __func__);
1506 if (tuner->index > 0)
1509 strscpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1510 tuner->type = V4L2_TUNER_RADIO;
1512 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1513 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1515 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1516 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1517 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1520 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1522 tuner->audmode = V4L2_TUNER_MODE_MONO;
1524 if (core->mode != WL1273_MODE_RX)
1527 if (mutex_lock_interruptible(&core->lock))
1530 r = core->read(core, WL1273_STEREO_GET, &val);
1535 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1537 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1539 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1543 tuner->signal = (s16) val;
1544 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1548 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1552 if (val == WL1273_RDS_SYNCHRONIZED)
1553 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1555 mutex_unlock(&core->lock);
1560 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1561 const struct v4l2_tuner *tuner)
1563 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1564 struct wl1273_core *core = radio->core;
1567 dev_dbg(radio->dev, "%s\n", __func__);
1568 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1569 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1570 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1571 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1572 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1573 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1575 if (tuner->index > 0)
1578 if (mutex_lock_interruptible(&core->lock))
1581 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1585 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1586 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1588 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1591 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1593 if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1594 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1596 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1600 radio->stereo = false;
1601 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1602 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1604 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1608 radio->stereo = true;
1610 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1611 __func__, tuner->audmode);
1617 mutex_unlock(&core->lock);
1622 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1623 struct v4l2_frequency *freq)
1625 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1626 struct wl1273_core *core = radio->core;
1628 dev_dbg(radio->dev, "%s\n", __func__);
1630 if (mutex_lock_interruptible(&core->lock))
1633 freq->type = V4L2_TUNER_RADIO;
1634 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1636 mutex_unlock(&core->lock);
1641 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1642 const struct v4l2_frequency *freq)
1644 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1645 struct wl1273_core *core = radio->core;
1648 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1650 if (freq->type != V4L2_TUNER_RADIO) {
1652 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1656 if (mutex_lock_interruptible(&core->lock))
1659 if (core->mode == WL1273_MODE_RX) {
1660 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1662 r = wl1273_fm_set_rx_freq(radio,
1663 WL1273_INV_FREQ(freq->frequency));
1665 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1666 ": set frequency failed with %d\n", r);
1668 r = wl1273_fm_set_tx_freq(radio,
1669 WL1273_INV_FREQ(freq->frequency));
1671 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1672 ": set frequency failed with %d\n", r);
1675 mutex_unlock(&core->lock);
1677 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1681 #define WL1273_DEFAULT_SEEK_LEVEL 7
1683 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1684 const struct v4l2_hw_freq_seek *seek)
1686 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1687 struct wl1273_core *core = radio->core;
1690 dev_dbg(radio->dev, "%s\n", __func__);
1692 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1695 if (file->f_flags & O_NONBLOCK)
1696 return -EWOULDBLOCK;
1698 if (mutex_lock_interruptible(&core->lock))
1701 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1705 r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1707 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1709 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1710 WL1273_DEFAULT_SEEK_LEVEL);
1712 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1715 mutex_unlock(&core->lock);
1719 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1720 const struct v4l2_modulator *modulator)
1722 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1723 struct wl1273_core *core = radio->core;
1726 dev_dbg(radio->dev, "%s\n", __func__);
1728 if (modulator->index > 0)
1731 if (mutex_lock_interruptible(&core->lock))
1734 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1738 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1739 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1741 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1743 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1744 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1746 r = core->write(core, WL1273_MONO_SET,
1749 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1750 "MONO_SET fails: %d\n", r);
1752 mutex_unlock(&core->lock);
1757 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1758 struct v4l2_modulator *modulator)
1760 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1761 struct wl1273_core *core = radio->core;
1765 dev_dbg(radio->dev, "%s\n", __func__);
1767 strscpy(modulator->name, WL1273_FM_DRIVER_NAME,
1768 sizeof(modulator->name));
1770 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1771 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1773 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1774 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1776 if (core->mode != WL1273_MODE_TX)
1779 if (mutex_lock_interruptible(&core->lock))
1782 r = core->read(core, WL1273_MONO_SET, &val);
1786 if (val == WL1273_TX_STEREO)
1787 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1789 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1792 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1794 mutex_unlock(&core->lock);
1799 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1801 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1802 struct wl1273_core *core = radio->core;
1803 struct device *dev = radio->dev;
1807 dev_info(dev, DRIVER_DESC);
1809 if (core->mode == WL1273_MODE_OFF) {
1810 dev_info(dev, "Mode: Off\n");
1814 if (core->mode == WL1273_MODE_SUSPENDED) {
1815 dev_info(dev, "Mode: Suspended\n");
1819 r = core->read(core, WL1273_ASIC_ID_GET, &val);
1821 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1823 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1825 r = core->read(core, WL1273_ASIC_VER_GET, &val);
1827 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1829 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1831 r = core->read(core, WL1273_FIRM_VER_GET, &val);
1833 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1835 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1837 r = core->read(core, WL1273_BAND_SET, &val);
1839 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1841 dev_info(dev, "BAND: %d\n", val);
1843 if (core->mode == WL1273_MODE_TX) {
1844 r = core->read(core, WL1273_PUPD_SET, &val);
1846 dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1848 dev_info(dev, "PUPD: 0x%04x\n", val);
1850 r = core->read(core, WL1273_CHANL_SET, &val);
1852 dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1854 dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1855 } else if (core->mode == WL1273_MODE_RX) {
1856 int bf = radio->rangelow;
1858 r = core->read(core, WL1273_FREQ_SET, &val);
1860 dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1862 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1864 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1866 dev_err(dev, "%s: Get MOST_MODE fails.\n",
1869 dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1871 dev_info(dev, "MOST_MODE: Force mono output\n");
1873 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1875 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1877 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1880 "MOST_BLEND: Switched blend & hysteresis.\n");
1882 dev_info(dev, "MOST_BLEND: Soft blend.\n");
1884 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1886 r = core->read(core, WL1273_STEREO_GET, &val);
1888 dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1890 dev_info(dev, "STEREO: Not detected\n");
1892 dev_info(dev, "STEREO: Detected\n");
1894 dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1896 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1898 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1900 dev_info(dev, "RX signal strength: %d\n", (s16) val);
1902 r = core->read(core, WL1273_POWER_SET, &val);
1904 dev_err(dev, "%s: Get POWER fails.\n", __func__);
1906 dev_info(dev, "POWER: 0x%04x\n", val);
1908 r = core->read(core, WL1273_INT_MASK_SET, &val);
1910 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1912 dev_info(dev, "INT_MASK: 0x%04x\n", val);
1914 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1916 dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1919 dev_info(dev, "RDS_SYNC: Not synchronized\n");
1922 dev_info(dev, "RDS_SYNC: Synchronized\n");
1924 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1926 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1928 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1931 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1933 r = core->read(core, WL1273_VOLUME_SET, &val);
1935 dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1937 dev_info(dev, "VOLUME: 0x%04x\n", val);
1943 static void wl1273_vdev_release(struct video_device *dev)
1947 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1948 .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1949 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1952 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1953 .vidioc_querycap = wl1273_fm_vidioc_querycap,
1954 .vidioc_g_input = wl1273_fm_vidioc_g_input,
1955 .vidioc_s_input = wl1273_fm_vidioc_s_input,
1956 .vidioc_g_audio = wl1273_fm_vidioc_g_audio,
1957 .vidioc_s_audio = wl1273_fm_vidioc_s_audio,
1958 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner,
1959 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner,
1960 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency,
1961 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency,
1962 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,
1963 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator,
1964 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator,
1965 .vidioc_log_status = wl1273_fm_vidioc_log_status,
1968 static const struct video_device wl1273_viddev_template = {
1969 .fops = &wl1273_fops,
1970 .ioctl_ops = &wl1273_ioctl_ops,
1971 .name = WL1273_FM_DRIVER_NAME,
1972 .release = wl1273_vdev_release,
1973 .vfl_dir = VFL_DIR_TX,
1974 .device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |
1975 V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1976 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1977 V4L2_CAP_RDS_OUTPUT,
1980 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1982 struct wl1273_device *radio = platform_get_drvdata(pdev);
1983 struct wl1273_core *core = radio->core;
1985 dev_info(&pdev->dev, "%s.\n", __func__);
1987 free_irq(core->client->irq, radio);
1988 core->pdata->free_resources();
1990 v4l2_ctrl_handler_free(&radio->ctrl_handler);
1991 video_unregister_device(&radio->videodev);
1992 v4l2_device_unregister(&radio->v4l2dev);
1997 static int wl1273_fm_radio_probe(struct platform_device *pdev)
1999 struct wl1273_core **core = pdev->dev.platform_data;
2000 struct wl1273_device *radio;
2001 struct v4l2_ctrl *ctrl;
2004 pr_debug("%s\n", __func__);
2007 dev_err(&pdev->dev, "No platform data.\n");
2012 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2018 /* RDS buffer allocation */
2019 radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2020 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2021 if (!radio->buffer) {
2022 pr_err("Cannot allocate memory for RDS buffer.\n");
2027 radio->core = *core;
2028 radio->irq_flags = WL1273_IRQ_MASK;
2029 radio->dev = &radio->core->client->dev;
2030 radio->rds_on = false;
2031 radio->core->mode = WL1273_MODE_OFF;
2032 radio->tx_power = 118;
2033 radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2034 radio->band = WL1273_BAND_OTHER;
2035 radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2036 radio->core->channel_number = 2;
2037 radio->core->volume = WL1273_DEFAULT_VOLUME;
2038 radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2039 radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2040 radio->rangelow = WL1273_BAND_OTHER_LOW;
2041 radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2042 radio->stereo = true;
2043 radio->bus_type = "I2C";
2045 if (radio->core->pdata->request_resources) {
2046 r = radio->core->pdata->request_resources(radio->core->client);
2048 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2049 ": Cannot get platform data\n");
2053 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2055 r = request_threaded_irq(radio->core->client->irq, NULL,
2056 wl1273_fm_irq_thread_handler,
2057 IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2058 "wl1273-fm", radio);
2060 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2061 ": Unable to register IRQ handler: %d\n", r);
2062 goto err_request_irq;
2065 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured");
2070 init_completion(&radio->busy);
2071 init_waitqueue_head(&radio->read_queue);
2073 radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2074 if (!radio->write_buf) {
2079 radio->dev = &pdev->dev;
2080 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2081 radio->rds_users = 0;
2083 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2085 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2089 /* V4L2 configuration */
2090 radio->videodev = wl1273_viddev_template;
2092 radio->videodev.v4l2_dev = &radio->v4l2dev;
2094 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2096 /* add in ascending ID order */
2097 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2098 V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2099 WL1273_DEFAULT_VOLUME);
2101 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2102 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2104 v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2105 V4L2_CID_TUNE_PREEMPHASIS,
2106 V4L2_PREEMPHASIS_75_uS, 0x03,
2107 V4L2_PREEMPHASIS_50_uS);
2109 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2110 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2112 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2113 V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2116 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2118 if (radio->ctrl_handler.error) {
2119 r = radio->ctrl_handler.error;
2120 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2121 goto handler_init_err;
2124 video_set_drvdata(&radio->videodev, radio);
2125 platform_set_drvdata(pdev, radio);
2127 /* register video device */
2128 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2130 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2131 ": Could not register video device\n");
2132 goto handler_init_err;
2138 v4l2_ctrl_handler_free(&radio->ctrl_handler);
2139 v4l2_device_unregister(&radio->v4l2dev);
2141 free_irq(radio->core->client->irq, radio);
2143 radio->core->pdata->free_resources();
2148 static struct platform_driver wl1273_fm_radio_driver = {
2149 .probe = wl1273_fm_radio_probe,
2150 .remove = wl1273_fm_radio_remove,
2152 .name = "wl1273_fm_radio",
2156 module_platform_driver(wl1273_fm_radio_driver);
2158 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2159 MODULE_DESCRIPTION(DRIVER_DESC);
2160 MODULE_LICENSE("GPL");
2161 MODULE_ALIAS("platform:wl1273_fm_radio");