2 * Driver for the Texas Instruments WL1273 FM radio.
4 * Copyright (C) 2011 Nokia Corporation
5 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/delay.h>
22 #include <linux/firmware.h>
23 #include <linux/interrupt.h>
24 #include <linux/mfd/wl1273-core.h>
25 #include <linux/slab.h>
26 #include <linux/module.h>
27 #include <media/v4l2-common.h>
28 #include <media/v4l2-ctrls.h>
29 #include <media/v4l2-device.h>
30 #include <media/v4l2-ioctl.h>
32 #define DRIVER_DESC "Wl1273 FM Radio"
34 #define WL1273_POWER_SET_OFF 0
35 #define WL1273_POWER_SET_FM BIT(0)
36 #define WL1273_POWER_SET_RDS BIT(1)
37 #define WL1273_POWER_SET_RETENTION BIT(4)
39 #define WL1273_PUPD_SET_OFF 0x00
40 #define WL1273_PUPD_SET_ON 0x01
41 #define WL1273_PUPD_SET_RETENTION 0x10
43 #define WL1273_FREQ(x) (x * 10000 / 625)
44 #define WL1273_INV_FREQ(x) (x * 625 / 10000)
47 * static int radio_nr - The number of the radio device
52 module_param(radio_nr, int, 0);
53 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
55 struct wl1273_device {
59 unsigned int preemphasis;
61 unsigned int tx_power;
62 unsigned int rx_frequency;
63 unsigned int tx_frequency;
64 unsigned int rangelow;
65 unsigned int rangehigh;
72 wait_queue_head_t read_queue;
73 struct mutex lock; /* for serializing fm radio operations */
74 struct completion busy;
76 unsigned char *buffer;
77 unsigned int buf_size;
78 unsigned int rd_index;
79 unsigned int wr_index;
81 /* Selected interrupts */
85 struct v4l2_ctrl_handler ctrl_handler;
86 struct v4l2_device v4l2dev;
87 struct video_device videodev;
89 struct wl1273_core *core;
92 unsigned int rds_users;
95 #define WL1273_IRQ_MASK (WL1273_FR_EVENT | \
99 * static unsigned int rds_buf - the number of RDS buffer blocks used.
101 * The default number is 100.
103 static unsigned int rds_buf = 100;
104 module_param(rds_buf, uint, 0);
105 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
107 static int wl1273_fm_write_fw(struct wl1273_core *core,
110 struct i2c_client *client = core->client;
114 msg.addr = client->addr;
117 for (i = 0; i <= len; i++) {
122 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
124 r = i2c_transfer(client->adapter, &msg, 1);
125 if (r < 0 && i < len + 1)
129 dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
130 dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
132 /* Last transfer always fails. */
133 if (i == len || r == 1)
139 #define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status)
140 #define WL1273_RDS_CORRECTABLE_ERROR (1 << 3)
141 #define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4)
143 static int wl1273_fm_rds(struct wl1273_device *radio)
145 struct wl1273_core *core = radio->core;
146 struct i2c_client *client = core->client;
148 u8 b0 = WL1273_RDS_DATA_GET, status;
149 struct v4l2_rds_data rds = { 0, 0, 0 };
150 struct i2c_msg msg[] = {
152 .addr = client->addr,
158 .addr = client->addr,
166 if (core->mode != WL1273_MODE_RX)
169 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
173 if ((val & 0x01) == 0) {
174 /* RDS decoder not synchronized */
178 /* copy all four RDS blocks to internal buffer */
180 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
181 if (r != ARRAY_SIZE(msg)) {
182 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
183 ": %s: read_rds error r == %i)\n",
189 if (!WL1273_FIFO_HAS_DATA(status))
192 /* copy bits 0-2 (the block ID) to bits 3-5 */
193 rds.block = V4L2_RDS_BLOCK_MSK & status;
194 rds.block |= rds.block << 3;
196 /* copy the error bits to standard positions */
197 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
198 rds.block |= V4L2_RDS_BLOCK_ERROR;
199 rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
200 } else if (WL1273_RDS_CORRECTABLE_ERROR & status) {
201 rds.block &= ~V4L2_RDS_BLOCK_ERROR;
202 rds.block |= V4L2_RDS_BLOCK_CORRECTED;
205 /* copy RDS block to internal buffer */
206 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
207 radio->wr_index += 3;
209 /* wrap write pointer */
210 if (radio->wr_index >= radio->buf_size)
213 /* check for overflow & start over */
214 if (radio->wr_index == radio->rd_index) {
215 dev_dbg(radio->dev, "RDS OVERFLOW");
221 } while (WL1273_FIFO_HAS_DATA(status));
223 /* wake up read queue */
224 if (radio->wr_index != radio->rd_index)
225 wake_up_interruptible(&radio->read_queue);
230 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
232 struct wl1273_device *radio = dev_id;
233 struct wl1273_core *core = radio->core;
237 r = core->read(core, WL1273_FLAG_GET, &flags);
241 if (flags & WL1273_BL_EVENT) {
242 radio->irq_received = flags;
243 dev_dbg(radio->dev, "IRQ: BL\n");
246 if (flags & WL1273_RDS_EVENT) {
249 wl1273_fm_rds(radio);
252 if (flags & WL1273_BBLK_EVENT)
253 dev_dbg(radio->dev, "IRQ: BBLK\n");
255 if (flags & WL1273_LSYNC_EVENT)
256 dev_dbg(radio->dev, "IRQ: LSYNC\n");
258 if (flags & WL1273_LEV_EVENT) {
261 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
266 dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
269 if (flags & WL1273_IFFR_EVENT)
270 dev_dbg(radio->dev, "IRQ: IFFR\n");
272 if (flags & WL1273_PI_EVENT)
273 dev_dbg(radio->dev, "IRQ: PI\n");
275 if (flags & WL1273_PD_EVENT)
276 dev_dbg(radio->dev, "IRQ: PD\n");
278 if (flags & WL1273_STIC_EVENT)
279 dev_dbg(radio->dev, "IRQ: STIC\n");
281 if (flags & WL1273_MAL_EVENT)
282 dev_dbg(radio->dev, "IRQ: MAL\n");
284 if (flags & WL1273_POW_ENB_EVENT) {
285 complete(&radio->busy);
286 dev_dbg(radio->dev, "NOT BUSY\n");
287 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
290 if (flags & WL1273_SCAN_OVER_EVENT)
291 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
293 if (flags & WL1273_ERROR_EVENT)
294 dev_dbg(radio->dev, "IRQ: ERROR\n");
296 if (flags & WL1273_FR_EVENT) {
299 dev_dbg(radio->dev, "IRQ: FR:\n");
301 if (core->mode == WL1273_MODE_RX) {
302 r = core->write(core, WL1273_TUNER_MODE_SET,
303 TUNER_MODE_STOP_SEARCH);
306 "%s: TUNER_MODE_SET fails: %d\n",
311 r = core->read(core, WL1273_FREQ_SET, &freq);
315 if (radio->band == WL1273_BAND_JAPAN)
316 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
319 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
322 * The driver works better with this msleep,
323 * the documentation doesn't mention it.
325 usleep_range(10000, 15000);
327 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
330 r = core->read(core, WL1273_CHANL_SET, &freq);
334 dev_dbg(radio->dev, "%dkHz\n", freq);
336 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
340 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
341 complete(&radio->busy);
346 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
348 struct wl1273_core *core = radio->core;
351 if (freq < WL1273_BAND_TX_LOW) {
353 "Frequency out of range: %d < %d\n", freq,
358 if (freq > WL1273_BAND_TX_HIGH) {
360 "Frequency out of range: %d > %d\n", freq,
361 WL1273_BAND_TX_HIGH);
366 * The driver works better with this sleep,
367 * the documentation doesn't mention it.
369 usleep_range(5000, 10000);
371 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
373 /* Set the current tx channel */
374 r = core->write(core, WL1273_CHANL_SET, freq / 10);
378 INIT_COMPLETION(radio->busy);
380 /* wait for the FR IRQ */
381 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
385 dev_dbg(radio->dev, "WL1273_CHANL_SET: %d\n", r);
387 /* Enable the output power */
388 r = core->write(core, WL1273_POWER_ENB_SET, 1);
392 INIT_COMPLETION(radio->busy);
394 /* wait for the POWER_ENB IRQ */
395 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
399 radio->tx_frequency = freq;
400 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %d\n", r);
405 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
407 struct wl1273_core *core = radio->core;
410 if (freq < radio->rangelow) {
412 "Frequency out of range: %d < %d\n", freq,
418 if (freq > radio->rangehigh) {
420 "Frequency out of range: %d > %d\n", freq,
426 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
428 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
430 if (radio->band == WL1273_BAND_JAPAN)
431 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
433 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
435 r = core->write(core, WL1273_FREQ_SET, f);
437 dev_err(radio->dev, "FREQ_SET fails\n");
441 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
443 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
447 INIT_COMPLETION(radio->busy);
449 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
451 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
457 radio->rx_frequency = freq;
463 static int wl1273_fm_get_freq(struct wl1273_device *radio)
465 struct wl1273_core *core = radio->core;
470 if (core->mode == WL1273_MODE_RX) {
471 r = core->read(core, WL1273_FREQ_SET, &f);
475 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
476 if (radio->band == WL1273_BAND_JAPAN)
477 freq = WL1273_BAND_JAPAN_LOW + 50 * f;
479 freq = WL1273_BAND_OTHER_LOW + 50 * f;
481 r = core->read(core, WL1273_CHANL_SET, &f);
492 * wl1273_fm_upload_firmware_patch() - Upload the firmware.
493 * @radio: A pointer to the device struct.
495 * The firmware file consists of arrays of bytes where the first byte
496 * gives the array length. The first byte in the file gives the
497 * number of these arrays.
499 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
501 struct wl1273_core *core = radio->core;
502 unsigned int packet_num;
503 const struct firmware *fw_p;
504 const char *fw_name = "radio-wl1273-fw.bin";
505 struct device *dev = radio->dev;
509 dev_dbg(dev, "%s:\n", __func__);
512 * Uploading the firmware patch is not always necessary,
513 * so we only print an info message.
515 if (request_firmware(&fw_p, fw_name, dev)) {
516 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
521 ptr = (__u8 *) fw_p->data;
523 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
525 r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
527 dev_err(dev, "FW upload error: %d\n", r);
531 /* ignore possible error here */
532 core->write(core, WL1273_RESET, 0);
534 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
536 release_firmware(fw_p);
540 static int wl1273_fm_stop(struct wl1273_device *radio)
542 struct wl1273_core *core = radio->core;
544 if (core->mode == WL1273_MODE_RX) {
545 int r = core->write(core, WL1273_POWER_SET,
546 WL1273_POWER_SET_OFF);
548 dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
550 } else if (core->mode == WL1273_MODE_TX) {
551 int r = core->write(core, WL1273_PUPD_SET,
552 WL1273_PUPD_SET_OFF);
555 "%s: PUPD_SET fails: %d\n", __func__, r);
558 if (core->pdata->disable) {
559 core->pdata->disable();
560 dev_dbg(radio->dev, "Back to reset\n");
566 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
568 struct wl1273_core *core = radio->core;
569 struct wl1273_fm_platform_data *pdata = core->pdata;
570 struct device *dev = radio->dev;
573 if (pdata->enable && core->mode == WL1273_MODE_OFF) {
574 dev_dbg(radio->dev, "Out of reset\n");
580 if (new_mode == WL1273_MODE_RX) {
581 u16 val = WL1273_POWER_SET_FM;
584 val |= WL1273_POWER_SET_RDS;
586 /* If this fails try again */
587 r = core->write(core, WL1273_POWER_SET, val);
591 r = core->write(core, WL1273_POWER_SET, val);
593 dev_err(dev, "%s: POWER_SET fails\n", __func__);
598 /* rds buffer configuration */
602 } else if (new_mode == WL1273_MODE_TX) {
603 /* If this fails try again once */
604 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
607 r = core->write(core, WL1273_PUPD_SET,
610 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
616 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
618 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
620 dev_warn(dev, "%s: Illegal mode.\n", __func__);
623 if (core->mode == WL1273_MODE_OFF) {
624 r = wl1273_fm_upload_firmware_patch(radio);
626 dev_warn(dev, "Firmware upload failed.\n");
629 * Sometimes the chip is in a wrong power state at this point.
630 * So we set the power once again.
632 if (new_mode == WL1273_MODE_RX) {
633 u16 val = WL1273_POWER_SET_FM;
636 val |= WL1273_POWER_SET_RDS;
638 r = core->write(core, WL1273_POWER_SET, val);
640 dev_err(dev, "%s: POWER_SET fails\n", __func__);
643 } else if (new_mode == WL1273_MODE_TX) {
644 r = core->write(core, WL1273_PUPD_SET,
647 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
658 dev_dbg(dev, "%s: return: %d\n", __func__, r);
662 static int wl1273_fm_suspend(struct wl1273_device *radio)
664 struct wl1273_core *core = radio->core;
667 /* Cannot go from OFF to SUSPENDED */
668 if (core->mode == WL1273_MODE_RX)
669 r = core->write(core, WL1273_POWER_SET,
670 WL1273_POWER_SET_RETENTION);
671 else if (core->mode == WL1273_MODE_TX)
672 r = core->write(core, WL1273_PUPD_SET,
673 WL1273_PUPD_SET_RETENTION);
678 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
686 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
688 struct wl1273_core *core = radio->core;
689 struct device *dev = radio->dev;
693 dev_dbg(dev, "%s\n", __func__);
694 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
696 old_mode = core->mode;
697 if (mode & radio->forbidden) {
705 r = wl1273_fm_start(radio, mode);
707 dev_err(dev, "%s: Cannot start.\n", __func__);
708 wl1273_fm_stop(radio);
713 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
715 dev_err(dev, "INT_MASK_SET fails.\n");
719 /* remember previous settings */
720 if (mode == WL1273_MODE_RX) {
721 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
723 dev_err(dev, "set freq fails: %d.\n", r);
727 r = core->set_volume(core, core->volume);
729 dev_err(dev, "set volume fails: %d.\n", r);
733 dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
736 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
738 dev_err(dev, "set freq fails: %d.\n", r);
743 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
745 r = core->set_audio(core, core->audio_mode);
747 dev_err(dev, "Cannot set audio mode.\n");
750 case WL1273_MODE_OFF:
751 r = wl1273_fm_stop(radio);
753 dev_err(dev, "%s: Off fails: %d\n", __func__, r);
755 core->mode = WL1273_MODE_OFF;
759 case WL1273_MODE_SUSPENDED:
760 r = wl1273_fm_suspend(radio);
762 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
764 core->mode = WL1273_MODE_SUSPENDED;
769 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
775 core->mode = old_mode;
780 static int wl1273_fm_set_seek(struct wl1273_device *radio,
781 unsigned int wrap_around,
782 unsigned int seek_upward,
785 struct wl1273_core *core = radio->core;
787 unsigned int dir = (seek_upward == 0) ? 0 : 1;
790 f = radio->rx_frequency;
791 dev_dbg(radio->dev, "rx_frequency: %d\n", f);
793 if (dir && f + radio->spacing <= radio->rangehigh)
794 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
795 else if (dir && wrap_around)
796 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
797 else if (f - radio->spacing >= radio->rangelow)
798 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
799 else if (wrap_around)
800 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
805 if (level < SCHAR_MIN || level > SCHAR_MAX)
808 INIT_COMPLETION(radio->busy);
809 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
811 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
815 dev_dbg(radio->dev, "%s\n", __func__);
817 r = core->write(core, WL1273_SEARCH_LVL_SET, level);
821 r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
825 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
829 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
830 if (!(radio->irq_received & WL1273_BL_EVENT))
833 radio->irq_received &= ~WL1273_BL_EVENT;
839 dev_dbg(radio->dev, "Wrap around in HW seek.\n");
844 f = radio->rangehigh;
846 r = wl1273_fm_set_rx_freq(radio, f);
850 INIT_COMPLETION(radio->busy);
851 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
853 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
857 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
859 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
864 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.
865 * @radio: A pointer to the device struct.
867 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
869 struct wl1273_core *core = radio->core;
870 struct device *dev = radio->dev;
874 if (core->mode == WL1273_MODE_OFF ||
875 core->mode == WL1273_MODE_SUSPENDED)
878 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
880 dev_err(dev, "%s: read error: %d\n", __func__, r);
889 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
890 * @radio: A pointer to the device struct.
891 * @preemphasis: The new pre-amphasis value.
893 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
894 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
896 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
897 unsigned int preemphasis)
899 struct wl1273_core *core = radio->core;
903 if (core->mode == WL1273_MODE_OFF ||
904 core->mode == WL1273_MODE_SUSPENDED)
907 mutex_lock(&core->lock);
909 switch (preemphasis) {
910 case V4L2_PREEMPHASIS_DISABLED:
913 case V4L2_PREEMPHASIS_50_uS:
916 case V4L2_PREEMPHASIS_75_uS:
924 r = core->write(core, WL1273_PREMPH_SET, em);
928 radio->preemphasis = preemphasis;
931 mutex_unlock(&core->lock);
935 static int wl1273_fm_rds_on(struct wl1273_device *radio)
937 struct wl1273_core *core = radio->core;
940 dev_dbg(radio->dev, "%s\n", __func__);
944 r = core->write(core, WL1273_POWER_SET,
945 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
949 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
951 dev_err(radio->dev, "set freq fails: %d.\n", r);
956 static int wl1273_fm_rds_off(struct wl1273_device *radio)
958 struct wl1273_core *core = radio->core;
964 radio->irq_flags &= ~WL1273_RDS_EVENT;
966 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
970 /* Service pending read */
971 wake_up_interruptible(&radio->read_queue);
973 dev_dbg(radio->dev, "%s\n", __func__);
975 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
979 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
981 dev_err(radio->dev, "set freq fails: %d.\n", r);
983 dev_dbg(radio->dev, "%s: exiting...\n", __func__);
988 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
991 struct wl1273_core *core = radio->core;
993 if (core->mode == WL1273_MODE_OFF ||
994 core->mode == WL1273_MODE_SUSPENDED)
997 if (new_mode == WL1273_RDS_RESET) {
998 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1002 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1003 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1004 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1005 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1006 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1007 r = wl1273_fm_rds_off(radio);
1008 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1009 r = wl1273_fm_rds_on(radio);
1011 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1012 __func__, new_mode);
1017 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1022 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1023 size_t count, loff_t *ppos)
1025 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1026 struct wl1273_core *core = radio->core;
1030 dev_dbg(radio->dev, "%s\n", __func__);
1032 if (core->mode != WL1273_MODE_TX)
1035 if (radio->rds_users == 0) {
1036 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1040 if (mutex_lock_interruptible(&core->lock))
1043 * Multiple processes can open the device, but only
1044 * one gets to write to it.
1046 if (radio->owner && radio->owner != file) {
1050 radio->owner = file;
1058 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1060 if (copy_from_user(radio->write_buf + 1, buf, val)) {
1065 dev_dbg(radio->dev, "Count: %d\n", val);
1066 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1068 radio->write_buf[0] = WL1273_RDS_DATA_SET;
1069 core->write_data(core, radio->write_buf, val + 1);
1073 mutex_unlock(&core->lock);
1078 static unsigned int wl1273_fm_fops_poll(struct file *file,
1079 struct poll_table_struct *pts)
1081 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1082 struct wl1273_core *core = radio->core;
1084 if (radio->owner && radio->owner != file)
1087 radio->owner = file;
1089 if (core->mode == WL1273_MODE_RX) {
1090 poll_wait(file, &radio->read_queue, pts);
1092 if (radio->rd_index != radio->wr_index)
1093 return POLLIN | POLLRDNORM;
1095 } else if (core->mode == WL1273_MODE_TX) {
1096 return POLLOUT | POLLWRNORM;
1102 static int wl1273_fm_fops_open(struct file *file)
1104 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1105 struct wl1273_core *core = radio->core;
1108 dev_dbg(radio->dev, "%s\n", __func__);
1110 if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1111 !radio->rds_users) {
1112 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1114 if (mutex_lock_interruptible(&core->lock))
1117 radio->irq_flags |= WL1273_RDS_EVENT;
1119 r = core->write(core, WL1273_INT_MASK_SET,
1122 mutex_unlock(&core->lock);
1128 mutex_unlock(&core->lock);
1134 static int wl1273_fm_fops_release(struct file *file)
1136 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1137 struct wl1273_core *core = radio->core;
1140 dev_dbg(radio->dev, "%s\n", __func__);
1142 if (radio->rds_users > 0) {
1144 if (radio->rds_users == 0) {
1145 if (mutex_lock_interruptible(&core->lock))
1148 radio->irq_flags &= ~WL1273_RDS_EVENT;
1150 if (core->mode == WL1273_MODE_RX) {
1151 r = core->write(core,
1152 WL1273_INT_MASK_SET,
1155 mutex_unlock(&core->lock);
1159 mutex_unlock(&core->lock);
1163 if (file == radio->owner)
1164 radio->owner = NULL;
1169 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1170 size_t count, loff_t *ppos)
1173 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1174 struct wl1273_core *core = radio->core;
1175 unsigned int block_count = 0;
1178 dev_dbg(radio->dev, "%s\n", __func__);
1180 if (core->mode != WL1273_MODE_RX)
1183 if (radio->rds_users == 0) {
1184 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1188 if (mutex_lock_interruptible(&core->lock))
1192 * Multiple processes can open the device, but only
1193 * one at a time gets read access.
1195 if (radio->owner && radio->owner != file) {
1199 radio->owner = file;
1201 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1203 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1205 } else if (val == 0) {
1206 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1211 /* block if no new data available */
1212 while (radio->wr_index == radio->rd_index) {
1213 if (file->f_flags & O_NONBLOCK) {
1218 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1219 if (wait_event_interruptible(radio->read_queue,
1221 radio->rd_index) < 0) {
1227 /* calculate block count from byte count */
1228 count /= RDS_BLOCK_SIZE;
1230 /* copy RDS blocks from the internal buffer and to user buffer */
1231 while (block_count < count) {
1232 if (radio->rd_index == radio->wr_index)
1235 /* always transfer complete RDS blocks */
1236 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1240 /* increment and wrap the read pointer */
1241 radio->rd_index += RDS_BLOCK_SIZE;
1242 if (radio->rd_index >= radio->buf_size)
1243 radio->rd_index = 0;
1245 /* increment counters */
1247 buf += RDS_BLOCK_SIZE;
1248 r += RDS_BLOCK_SIZE;
1252 dev_dbg(radio->dev, "%s: exit\n", __func__);
1253 mutex_unlock(&core->lock);
1258 static const struct v4l2_file_operations wl1273_fops = {
1259 .owner = THIS_MODULE,
1260 .read = wl1273_fm_fops_read,
1261 .write = wl1273_fm_fops_write,
1262 .poll = wl1273_fm_fops_poll,
1263 .unlocked_ioctl = video_ioctl2,
1264 .open = wl1273_fm_fops_open,
1265 .release = wl1273_fm_fops_release,
1268 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1269 struct v4l2_capability *capability)
1271 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1273 dev_dbg(radio->dev, "%s\n", __func__);
1275 strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1276 sizeof(capability->driver));
1277 strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1278 sizeof(capability->card));
1279 strlcpy(capability->bus_info, radio->bus_type,
1280 sizeof(capability->bus_info));
1282 capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
1283 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1284 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1285 V4L2_CAP_RDS_OUTPUT;
1290 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1293 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1295 dev_dbg(radio->dev, "%s\n", __func__);
1302 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1305 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1307 dev_dbg(radio->dev, "%s\n", __func__);
1316 * wl1273_fm_set_tx_power() - Set the transmission power value.
1317 * @core: A pointer to the device struct.
1318 * @power: The new power value.
1320 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1322 struct wl1273_core *core = radio->core;
1325 if (core->mode == WL1273_MODE_OFF ||
1326 core->mode == WL1273_MODE_SUSPENDED)
1329 mutex_lock(&core->lock);
1331 /* Convert the dBuV value to chip presentation */
1332 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1336 radio->tx_power = power;
1339 mutex_unlock(&core->lock);
1343 #define WL1273_SPACING_50kHz 1
1344 #define WL1273_SPACING_100kHz 2
1345 #define WL1273_SPACING_200kHz 4
1347 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1348 unsigned int spacing)
1350 struct wl1273_core *core = radio->core;
1354 r = core->write(core, WL1273_SCAN_SPACING_SET,
1355 WL1273_SPACING_100kHz);
1356 radio->spacing = 100;
1357 } else if (spacing - 50000 < 25000) {
1358 r = core->write(core, WL1273_SCAN_SPACING_SET,
1359 WL1273_SPACING_50kHz);
1360 radio->spacing = 50;
1361 } else if (spacing - 100000 < 50000) {
1362 r = core->write(core, WL1273_SCAN_SPACING_SET,
1363 WL1273_SPACING_100kHz);
1364 radio->spacing = 100;
1366 r = core->write(core, WL1273_SCAN_SPACING_SET,
1367 WL1273_SPACING_200kHz);
1368 radio->spacing = 200;
1374 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1376 struct wl1273_device *radio = ctrl->priv;
1377 struct wl1273_core *core = radio->core;
1379 dev_dbg(radio->dev, "%s\n", __func__);
1381 if (mutex_lock_interruptible(&core->lock))
1385 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1386 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1390 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1391 __func__, ctrl->id);
1395 mutex_unlock(&core->lock);
1400 #define WL1273_MUTE_SOFT_ENABLE (1 << 0)
1401 #define WL1273_MUTE_AC (1 << 1)
1402 #define WL1273_MUTE_HARD_LEFT (1 << 2)
1403 #define WL1273_MUTE_HARD_RIGHT (1 << 3)
1404 #define WL1273_MUTE_SOFT_FORCE (1 << 4)
1406 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1408 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1411 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1413 struct wl1273_device *radio = to_radio(ctrl);
1414 struct wl1273_core *core = radio->core;
1417 dev_dbg(radio->dev, "%s\n", __func__);
1420 case V4L2_CID_AUDIO_MUTE:
1421 if (mutex_lock_interruptible(&core->lock))
1424 if (core->mode == WL1273_MODE_RX && ctrl->val)
1425 r = core->write(core,
1426 WL1273_MUTE_STATUS_SET,
1427 WL1273_MUTE_HARD_LEFT |
1428 WL1273_MUTE_HARD_RIGHT);
1429 else if (core->mode == WL1273_MODE_RX)
1430 r = core->write(core,
1431 WL1273_MUTE_STATUS_SET, 0x0);
1432 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1433 r = core->write(core, WL1273_MUTE, 1);
1434 else if (core->mode == WL1273_MODE_TX)
1435 r = core->write(core, WL1273_MUTE, 0);
1437 mutex_unlock(&core->lock);
1440 case V4L2_CID_AUDIO_VOLUME:
1442 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1444 r = core->set_volume(core, core->volume);
1447 case V4L2_CID_TUNE_PREEMPHASIS:
1448 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1451 case V4L2_CID_TUNE_POWER_LEVEL:
1452 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1456 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1457 __func__, ctrl->id);
1461 dev_dbg(radio->dev, "%s\n", __func__);
1465 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1466 struct v4l2_audio *audio)
1468 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1470 dev_dbg(radio->dev, "%s\n", __func__);
1472 if (audio->index > 1)
1475 strlcpy(audio->name, "Radio", sizeof(audio->name));
1476 audio->capability = V4L2_AUDCAP_STEREO;
1481 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1482 const struct v4l2_audio *audio)
1484 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1486 dev_dbg(radio->dev, "%s\n", __func__);
1488 if (audio->index != 0)
1494 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1495 #define WL1273_RDS_SYNCHRONIZED 1
1497 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1498 struct v4l2_tuner *tuner)
1500 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1501 struct wl1273_core *core = radio->core;
1505 dev_dbg(radio->dev, "%s\n", __func__);
1507 if (tuner->index > 0)
1510 strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1511 tuner->type = V4L2_TUNER_RADIO;
1513 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1514 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1516 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1517 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1518 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1521 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1523 tuner->audmode = V4L2_TUNER_MODE_MONO;
1525 if (core->mode != WL1273_MODE_RX)
1528 if (mutex_lock_interruptible(&core->lock))
1531 r = core->read(core, WL1273_STEREO_GET, &val);
1536 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1538 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1540 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1544 tuner->signal = (s16) val;
1545 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1549 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1553 if (val == WL1273_RDS_SYNCHRONIZED)
1554 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1556 mutex_unlock(&core->lock);
1561 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1562 struct v4l2_tuner *tuner)
1564 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1565 struct wl1273_core *core = radio->core;
1568 dev_dbg(radio->dev, "%s\n", __func__);
1569 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1570 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1571 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1572 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1573 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1574 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1576 if (tuner->index > 0)
1579 if (mutex_lock_interruptible(&core->lock))
1582 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1586 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1587 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1589 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1592 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1594 if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1595 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1597 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1601 radio->stereo = false;
1602 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1603 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1605 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1609 radio->stereo = true;
1611 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1612 __func__, tuner->audmode);
1618 mutex_unlock(&core->lock);
1623 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1624 struct v4l2_frequency *freq)
1626 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1627 struct wl1273_core *core = radio->core;
1629 dev_dbg(radio->dev, "%s\n", __func__);
1631 if (mutex_lock_interruptible(&core->lock))
1634 freq->type = V4L2_TUNER_RADIO;
1635 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1637 mutex_unlock(&core->lock);
1642 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1643 struct v4l2_frequency *freq)
1645 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1646 struct wl1273_core *core = radio->core;
1649 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1651 if (freq->type != V4L2_TUNER_RADIO) {
1653 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1657 if (mutex_lock_interruptible(&core->lock))
1660 if (core->mode == WL1273_MODE_RX) {
1661 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1663 r = wl1273_fm_set_rx_freq(radio,
1664 WL1273_INV_FREQ(freq->frequency));
1666 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1667 ": set frequency failed with %d\n", r);
1669 r = wl1273_fm_set_tx_freq(radio,
1670 WL1273_INV_FREQ(freq->frequency));
1672 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1673 ": set frequency failed with %d\n", r);
1676 mutex_unlock(&core->lock);
1678 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1682 #define WL1273_DEFAULT_SEEK_LEVEL 7
1684 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1685 const struct v4l2_hw_freq_seek *seek)
1687 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1688 struct wl1273_core *core = radio->core;
1691 dev_dbg(radio->dev, "%s\n", __func__);
1693 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1696 if (file->f_flags & O_NONBLOCK)
1697 return -EWOULDBLOCK;
1699 if (mutex_lock_interruptible(&core->lock))
1702 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1706 r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1708 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1710 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1711 WL1273_DEFAULT_SEEK_LEVEL);
1713 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1716 mutex_unlock(&core->lock);
1720 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1721 const struct v4l2_modulator *modulator)
1723 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1724 struct wl1273_core *core = radio->core;
1727 dev_dbg(radio->dev, "%s\n", __func__);
1729 if (modulator->index > 0)
1732 if (mutex_lock_interruptible(&core->lock))
1735 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1739 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1740 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1742 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1744 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1745 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1747 r = core->write(core, WL1273_MONO_SET,
1750 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1751 "MONO_SET fails: %d\n", r);
1753 mutex_unlock(&core->lock);
1758 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1759 struct v4l2_modulator *modulator)
1761 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1762 struct wl1273_core *core = radio->core;
1766 dev_dbg(radio->dev, "%s\n", __func__);
1768 strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1769 sizeof(modulator->name));
1771 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1772 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1774 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1775 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1777 if (core->mode != WL1273_MODE_TX)
1780 if (mutex_lock_interruptible(&core->lock))
1783 r = core->read(core, WL1273_MONO_SET, &val);
1787 if (val == WL1273_TX_STEREO)
1788 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1790 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1793 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1795 mutex_unlock(&core->lock);
1800 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1802 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1803 struct wl1273_core *core = radio->core;
1804 struct device *dev = radio->dev;
1808 dev_info(dev, DRIVER_DESC);
1810 if (core->mode == WL1273_MODE_OFF) {
1811 dev_info(dev, "Mode: Off\n");
1815 if (core->mode == WL1273_MODE_SUSPENDED) {
1816 dev_info(dev, "Mode: Suspended\n");
1820 r = core->read(core, WL1273_ASIC_ID_GET, &val);
1822 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1824 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1826 r = core->read(core, WL1273_ASIC_VER_GET, &val);
1828 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1830 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1832 r = core->read(core, WL1273_FIRM_VER_GET, &val);
1834 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1836 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1838 r = core->read(core, WL1273_BAND_SET, &val);
1840 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1842 dev_info(dev, "BAND: %d\n", val);
1844 if (core->mode == WL1273_MODE_TX) {
1845 r = core->read(core, WL1273_PUPD_SET, &val);
1847 dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1849 dev_info(dev, "PUPD: 0x%04x\n", val);
1851 r = core->read(core, WL1273_CHANL_SET, &val);
1853 dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1855 dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1856 } else if (core->mode == WL1273_MODE_RX) {
1857 int bf = radio->rangelow;
1859 r = core->read(core, WL1273_FREQ_SET, &val);
1861 dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1863 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1865 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1867 dev_err(dev, "%s: Get MOST_MODE fails.\n",
1870 dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1872 dev_info(dev, "MOST_MODE: Force mono output\n");
1874 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1876 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1878 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1881 "MOST_BLEND: Switched blend & hysteresis.\n");
1883 dev_info(dev, "MOST_BLEND: Soft blend.\n");
1885 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1887 r = core->read(core, WL1273_STEREO_GET, &val);
1889 dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1891 dev_info(dev, "STEREO: Not detected\n");
1893 dev_info(dev, "STEREO: Detected\n");
1895 dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1897 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1899 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1901 dev_info(dev, "RX signal strength: %d\n", (s16) val);
1903 r = core->read(core, WL1273_POWER_SET, &val);
1905 dev_err(dev, "%s: Get POWER fails.\n", __func__);
1907 dev_info(dev, "POWER: 0x%04x\n", val);
1909 r = core->read(core, WL1273_INT_MASK_SET, &val);
1911 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1913 dev_info(dev, "INT_MASK: 0x%04x\n", val);
1915 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1917 dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1920 dev_info(dev, "RDS_SYNC: Not synchronized\n");
1923 dev_info(dev, "RDS_SYNC: Synchronized\n");
1925 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1927 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1929 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1932 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1934 r = core->read(core, WL1273_VOLUME_SET, &val);
1936 dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1938 dev_info(dev, "VOLUME: 0x%04x\n", val);
1944 static void wl1273_vdev_release(struct video_device *dev)
1948 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1949 .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1950 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1953 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1954 .vidioc_querycap = wl1273_fm_vidioc_querycap,
1955 .vidioc_g_input = wl1273_fm_vidioc_g_input,
1956 .vidioc_s_input = wl1273_fm_vidioc_s_input,
1957 .vidioc_g_audio = wl1273_fm_vidioc_g_audio,
1958 .vidioc_s_audio = wl1273_fm_vidioc_s_audio,
1959 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner,
1960 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner,
1961 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency,
1962 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency,
1963 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,
1964 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator,
1965 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator,
1966 .vidioc_log_status = wl1273_fm_vidioc_log_status,
1969 static struct video_device wl1273_viddev_template = {
1970 .fops = &wl1273_fops,
1971 .ioctl_ops = &wl1273_ioctl_ops,
1972 .name = WL1273_FM_DRIVER_NAME,
1973 .release = wl1273_vdev_release,
1976 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1978 struct wl1273_device *radio = platform_get_drvdata(pdev);
1979 struct wl1273_core *core = radio->core;
1981 dev_info(&pdev->dev, "%s.\n", __func__);
1983 free_irq(core->client->irq, radio);
1984 core->pdata->free_resources();
1986 v4l2_ctrl_handler_free(&radio->ctrl_handler);
1987 video_unregister_device(&radio->videodev);
1988 v4l2_device_unregister(&radio->v4l2dev);
1993 static int wl1273_fm_radio_probe(struct platform_device *pdev)
1995 struct wl1273_core **core = pdev->dev.platform_data;
1996 struct wl1273_device *radio;
1997 struct v4l2_ctrl *ctrl;
2000 pr_debug("%s\n", __func__);
2003 dev_err(&pdev->dev, "No platform data.\n");
2008 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2014 /* RDS buffer allocation */
2015 radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2016 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2017 if (!radio->buffer) {
2018 pr_err("Cannot allocate memory for RDS buffer.\n");
2023 radio->core = *core;
2024 radio->irq_flags = WL1273_IRQ_MASK;
2025 radio->dev = &radio->core->client->dev;
2026 radio->rds_on = false;
2027 radio->core->mode = WL1273_MODE_OFF;
2028 radio->tx_power = 118;
2029 radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2030 radio->band = WL1273_BAND_OTHER;
2031 radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2032 radio->core->channel_number = 2;
2033 radio->core->volume = WL1273_DEFAULT_VOLUME;
2034 radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2035 radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2036 radio->rangelow = WL1273_BAND_OTHER_LOW;
2037 radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2038 radio->stereo = true;
2039 radio->bus_type = "I2C";
2041 if (radio->core->pdata->request_resources) {
2042 r = radio->core->pdata->request_resources(radio->core->client);
2044 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2045 ": Cannot get platform data\n");
2049 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2051 r = request_threaded_irq(radio->core->client->irq, NULL,
2052 wl1273_fm_irq_thread_handler,
2053 IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2054 "wl1273-fm", radio);
2056 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2057 ": Unable to register IRQ handler: %d\n", r);
2058 goto err_request_irq;
2061 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
2067 init_completion(&radio->busy);
2068 init_waitqueue_head(&radio->read_queue);
2070 radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2071 if (!radio->write_buf) {
2076 radio->dev = &pdev->dev;
2077 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2078 radio->rds_users = 0;
2080 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2082 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2086 /* V4L2 configuration */
2087 memcpy(&radio->videodev, &wl1273_viddev_template,
2088 sizeof(wl1273_viddev_template));
2090 radio->videodev.v4l2_dev = &radio->v4l2dev;
2092 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2094 /* add in ascending ID order */
2095 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2096 V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2097 WL1273_DEFAULT_VOLUME);
2099 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2100 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2102 v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2103 V4L2_CID_TUNE_PREEMPHASIS,
2104 V4L2_PREEMPHASIS_75_uS, 0x03,
2105 V4L2_PREEMPHASIS_50_uS);
2107 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2108 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2110 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2111 V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2114 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2116 if (radio->ctrl_handler.error) {
2117 r = radio->ctrl_handler.error;
2118 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2119 goto handler_init_err;
2122 video_set_drvdata(&radio->videodev, radio);
2123 platform_set_drvdata(pdev, radio);
2125 /* register video device */
2126 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2128 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2129 ": Could not register video device\n");
2130 goto handler_init_err;
2136 v4l2_ctrl_handler_free(&radio->ctrl_handler);
2137 v4l2_device_unregister(&radio->v4l2dev);
2139 free_irq(radio->core->client->irq, radio);
2141 radio->core->pdata->free_resources();
2146 static struct platform_driver wl1273_fm_radio_driver = {
2147 .probe = wl1273_fm_radio_probe,
2148 .remove = wl1273_fm_radio_remove,
2150 .name = "wl1273_fm_radio",
2151 .owner = THIS_MODULE,
2155 module_platform_driver(wl1273_fm_radio_driver);
2157 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2158 MODULE_DESCRIPTION(DRIVER_DESC);
2159 MODULE_LICENSE("GPL");
2160 MODULE_ALIAS("platform:wl1273_fm_radio");