1 /*
2 * Driver for the Texas Instruments WL1273 FM radio.
3 *
4 * Copyright (C) 2011 Nokia Corporation
5 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
6 *
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.
10 *
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.
15 *
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
19 */
20
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>
31
32 #define DRIVER_DESC "Wl1273 FM Radio"
33
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)
38
39 #define WL1273_PUPD_SET_OFF 0x00
40 #define WL1273_PUPD_SET_ON 0x01
41 #define WL1273_PUPD_SET_RETENTION 0x10
42
43 #define WL1273_FREQ(x) (x * 10000 / 625)
44 #define WL1273_INV_FREQ(x) (x * 625 / 10000)
45
46 /*
47 * static int radio_nr - The number of the radio device
48 *
49 * The default is 0.
50 */
51 static int radio_nr;
52 module_param(radio_nr, int, 0);
53 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
54
55 struct wl1273_device {
56 char *bus_type;
57
58 u8 forbidden;
59 unsigned int preemphasis;
60 unsigned int spacing;
61 unsigned int tx_power;
62 unsigned int rx_frequency;
63 unsigned int tx_frequency;
64 unsigned int rangelow;
65 unsigned int rangehigh;
66 unsigned int band;
67 bool stereo;
68
69 /* RDS */
70 unsigned int rds_on;
71
72 wait_queue_head_t read_queue;
73 struct mutex lock; /* for serializing fm radio operations */
74 struct completion busy;
75
76 unsigned char *buffer;
77 unsigned int buf_size;
78 unsigned int rd_index;
79 unsigned int wr_index;
80
81 /* Selected interrupts */
82 u16 irq_flags;
83 u16 irq_received;
84
85 struct v4l2_ctrl_handler ctrl_handler;
86 struct v4l2_device v4l2dev;
87 struct video_device videodev;
88 struct device *dev;
89 struct wl1273_core *core;
90 struct file *owner;
91 char *write_buf;
92 unsigned int rds_users;
93 };
94
95 #define WL1273_IRQ_MASK (WL1273_FR_EVENT | \
96 WL1273_POW_ENB_EVENT)
97
98 /*
99 * static unsigned int rds_buf - the number of RDS buffer blocks used.
100 *
101 * The default number is 100.
102 */
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");
106
wl1273_fm_write_fw(struct wl1273_core * core,__u8 * fw,int len)107 static int wl1273_fm_write_fw(struct wl1273_core *core,
108 __u8 *fw, int len)
109 {
110 struct i2c_client *client = core->client;
111 struct i2c_msg msg;
112 int i, r = 0;
113
114 msg.addr = client->addr;
115 msg.flags = 0;
116
117 for (i = 0; i <= len; i++) {
118 msg.len = fw[0];
119 msg.buf = fw + 1;
120
121 fw += msg.len + 1;
122 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
123
124 r = i2c_transfer(client->adapter, &msg, 1);
125 if (r < 0 && i < len + 1)
126 break;
127 }
128
129 dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
130 dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
131
132 /* Last transfer always fails. */
133 if (i == len || r == 1)
134 r = 0;
135
136 return r;
137 }
138
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)
142
wl1273_fm_rds(struct wl1273_device * radio)143 static int wl1273_fm_rds(struct wl1273_device *radio)
144 {
145 struct wl1273_core *core = radio->core;
146 struct i2c_client *client = core->client;
147 u16 val;
148 u8 b0 = WL1273_RDS_DATA_GET, status;
149 struct v4l2_rds_data rds = { 0, 0, 0 };
150 struct i2c_msg msg[] = {
151 {
152 .addr = client->addr,
153 .flags = 0,
154 .buf = &b0,
155 .len = 1,
156 },
157 {
158 .addr = client->addr,
159 .flags = I2C_M_RD,
160 .buf = (u8 *) &rds,
161 .len = sizeof(rds),
162 }
163 };
164 int r;
165
166 if (core->mode != WL1273_MODE_RX)
167 return 0;
168
169 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
170 if (r)
171 return r;
172
173 if ((val & 0x01) == 0) {
174 /* RDS decoder not synchronized */
175 return -EAGAIN;
176 }
177
178 /* copy all four RDS blocks to internal buffer */
179 do {
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",
184 __func__, r);
185 }
186
187 status = rds.block;
188
189 if (!WL1273_FIFO_HAS_DATA(status))
190 break;
191
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;
195
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;
203 }
204
205 /* copy RDS block to internal buffer */
206 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
207 radio->wr_index += 3;
208
209 /* wrap write pointer */
210 if (radio->wr_index >= radio->buf_size)
211 radio->wr_index = 0;
212
213 /* check for overflow & start over */
214 if (radio->wr_index == radio->rd_index) {
215 dev_dbg(radio->dev, "RDS OVERFLOW");
216
217 radio->rd_index = 0;
218 radio->wr_index = 0;
219 break;
220 }
221 } while (WL1273_FIFO_HAS_DATA(status));
222
223 /* wake up read queue */
224 if (radio->wr_index != radio->rd_index)
225 wake_up_interruptible(&radio->read_queue);
226
227 return 0;
228 }
229
wl1273_fm_irq_thread_handler(int irq,void * dev_id)230 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
231 {
232 struct wl1273_device *radio = dev_id;
233 struct wl1273_core *core = radio->core;
234 u16 flags;
235 int r;
236
237 r = core->read(core, WL1273_FLAG_GET, &flags);
238 if (r)
239 goto out;
240
241 if (flags & WL1273_BL_EVENT) {
242 radio->irq_received = flags;
243 dev_dbg(radio->dev, "IRQ: BL\n");
244 }
245
246 if (flags & WL1273_RDS_EVENT) {
247 msleep(200);
248
249 wl1273_fm_rds(radio);
250 }
251
252 if (flags & WL1273_BBLK_EVENT)
253 dev_dbg(radio->dev, "IRQ: BBLK\n");
254
255 if (flags & WL1273_LSYNC_EVENT)
256 dev_dbg(radio->dev, "IRQ: LSYNC\n");
257
258 if (flags & WL1273_LEV_EVENT) {
259 u16 level;
260
261 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
262 if (r)
263 goto out;
264
265 if (level > 14)
266 dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
267 }
268
269 if (flags & WL1273_IFFR_EVENT)
270 dev_dbg(radio->dev, "IRQ: IFFR\n");
271
272 if (flags & WL1273_PI_EVENT)
273 dev_dbg(radio->dev, "IRQ: PI\n");
274
275 if (flags & WL1273_PD_EVENT)
276 dev_dbg(radio->dev, "IRQ: PD\n");
277
278 if (flags & WL1273_STIC_EVENT)
279 dev_dbg(radio->dev, "IRQ: STIC\n");
280
281 if (flags & WL1273_MAL_EVENT)
282 dev_dbg(radio->dev, "IRQ: MAL\n");
283
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");
288 }
289
290 if (flags & WL1273_SCAN_OVER_EVENT)
291 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
292
293 if (flags & WL1273_ERROR_EVENT)
294 dev_dbg(radio->dev, "IRQ: ERROR\n");
295
296 if (flags & WL1273_FR_EVENT) {
297 u16 freq;
298
299 dev_dbg(radio->dev, "IRQ: FR:\n");
300
301 if (core->mode == WL1273_MODE_RX) {
302 r = core->write(core, WL1273_TUNER_MODE_SET,
303 TUNER_MODE_STOP_SEARCH);
304 if (r) {
305 dev_err(radio->dev,
306 "%s: TUNER_MODE_SET fails: %d\n",
307 __func__, r);
308 goto out;
309 }
310
311 r = core->read(core, WL1273_FREQ_SET, &freq);
312 if (r)
313 goto out;
314
315 if (radio->band == WL1273_BAND_JAPAN)
316 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
317 freq * 50;
318 else
319 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
320 freq * 50;
321 /*
322 * The driver works better with this msleep,
323 * the documentation doesn't mention it.
324 */
325 usleep_range(10000, 15000);
326
327 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
328
329 } else {
330 r = core->read(core, WL1273_CHANL_SET, &freq);
331 if (r)
332 goto out;
333
334 dev_dbg(radio->dev, "%dkHz\n", freq);
335 }
336 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
337 }
338
339 out:
340 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
341 complete(&radio->busy);
342
343 return IRQ_HANDLED;
344 }
345
wl1273_fm_set_tx_freq(struct wl1273_device * radio,unsigned int freq)346 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
347 {
348 struct wl1273_core *core = radio->core;
349 int r = 0;
350 unsigned long t;
351
352 if (freq < WL1273_BAND_TX_LOW) {
353 dev_err(radio->dev,
354 "Frequency out of range: %d < %d\n", freq,
355 WL1273_BAND_TX_LOW);
356 return -ERANGE;
357 }
358
359 if (freq > WL1273_BAND_TX_HIGH) {
360 dev_err(radio->dev,
361 "Frequency out of range: %d > %d\n", freq,
362 WL1273_BAND_TX_HIGH);
363 return -ERANGE;
364 }
365
366 /*
367 * The driver works better with this sleep,
368 * the documentation doesn't mention it.
369 */
370 usleep_range(5000, 10000);
371
372 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
373
374 /* Set the current tx channel */
375 r = core->write(core, WL1273_CHANL_SET, freq / 10);
376 if (r)
377 return r;
378
379 reinit_completion(&radio->busy);
380
381 /* wait for the FR IRQ */
382 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
383 if (!t)
384 return -ETIMEDOUT;
385
386 dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);
387
388 /* Enable the output power */
389 r = core->write(core, WL1273_POWER_ENB_SET, 1);
390 if (r)
391 return r;
392
393 reinit_completion(&radio->busy);
394
395 /* wait for the POWER_ENB IRQ */
396 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
397 if (!t)
398 return -ETIMEDOUT;
399
400 radio->tx_frequency = freq;
401 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);
402
403 return 0;
404 }
405
wl1273_fm_set_rx_freq(struct wl1273_device * radio,unsigned int freq)406 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
407 {
408 struct wl1273_core *core = radio->core;
409 int r, f;
410 unsigned long t;
411
412 if (freq < radio->rangelow) {
413 dev_err(radio->dev,
414 "Frequency out of range: %d < %d\n", freq,
415 radio->rangelow);
416 r = -ERANGE;
417 goto err;
418 }
419
420 if (freq > radio->rangehigh) {
421 dev_err(radio->dev,
422 "Frequency out of range: %d > %d\n", freq,
423 radio->rangehigh);
424 r = -ERANGE;
425 goto err;
426 }
427
428 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
429
430 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
431
432 if (radio->band == WL1273_BAND_JAPAN)
433 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
434 else
435 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
436
437 r = core->write(core, WL1273_FREQ_SET, f);
438 if (r) {
439 dev_err(radio->dev, "FREQ_SET fails\n");
440 goto err;
441 }
442
443 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
444 if (r) {
445 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
446 goto err;
447 }
448
449 reinit_completion(&radio->busy);
450
451 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
452 if (!t) {
453 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
454 return -ETIMEDOUT;
455 }
456
457 radio->rd_index = 0;
458 radio->wr_index = 0;
459 radio->rx_frequency = freq;
460 return 0;
461 err:
462 return r;
463 }
464
wl1273_fm_get_freq(struct wl1273_device * radio)465 static int wl1273_fm_get_freq(struct wl1273_device *radio)
466 {
467 struct wl1273_core *core = radio->core;
468 unsigned int freq;
469 u16 f;
470 int r;
471
472 if (core->mode == WL1273_MODE_RX) {
473 r = core->read(core, WL1273_FREQ_SET, &f);
474 if (r)
475 return r;
476
477 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
478 if (radio->band == WL1273_BAND_JAPAN)
479 freq = WL1273_BAND_JAPAN_LOW + 50 * f;
480 else
481 freq = WL1273_BAND_OTHER_LOW + 50 * f;
482 } else {
483 r = core->read(core, WL1273_CHANL_SET, &f);
484 if (r)
485 return r;
486
487 freq = f * 10;
488 }
489
490 return freq;
491 }
492
493 /**
494 * wl1273_fm_upload_firmware_patch() - Upload the firmware.
495 * @radio: A pointer to the device struct.
496 *
497 * The firmware file consists of arrays of bytes where the first byte
498 * gives the array length. The first byte in the file gives the
499 * number of these arrays.
500 */
wl1273_fm_upload_firmware_patch(struct wl1273_device * radio)501 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
502 {
503 struct wl1273_core *core = radio->core;
504 unsigned int packet_num;
505 const struct firmware *fw_p;
506 const char *fw_name = "radio-wl1273-fw.bin";
507 struct device *dev = radio->dev;
508 __u8 *ptr;
509 int r;
510
511 dev_dbg(dev, "%s:\n", __func__);
512
513 /*
514 * Uploading the firmware patch is not always necessary,
515 * so we only print an info message.
516 */
517 if (request_firmware(&fw_p, fw_name, dev)) {
518 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
519
520 return 0;
521 }
522
523 ptr = (__u8 *) fw_p->data;
524 packet_num = ptr[0];
525 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
526
527 r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
528 if (r) {
529 dev_err(dev, "FW upload error: %d\n", r);
530 goto out;
531 }
532
533 /* ignore possible error here */
534 core->write(core, WL1273_RESET, 0);
535
536 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
537 out:
538 release_firmware(fw_p);
539 return r;
540 }
541
wl1273_fm_stop(struct wl1273_device * radio)542 static int wl1273_fm_stop(struct wl1273_device *radio)
543 {
544 struct wl1273_core *core = radio->core;
545
546 if (core->mode == WL1273_MODE_RX) {
547 int r = core->write(core, WL1273_POWER_SET,
548 WL1273_POWER_SET_OFF);
549 if (r)
550 dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
551 __func__, r);
552 } else if (core->mode == WL1273_MODE_TX) {
553 int r = core->write(core, WL1273_PUPD_SET,
554 WL1273_PUPD_SET_OFF);
555 if (r)
556 dev_err(radio->dev,
557 "%s: PUPD_SET fails: %d\n", __func__, r);
558 }
559
560 if (core->pdata->disable) {
561 core->pdata->disable();
562 dev_dbg(radio->dev, "Back to reset\n");
563 }
564
565 return 0;
566 }
567
wl1273_fm_start(struct wl1273_device * radio,int new_mode)568 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
569 {
570 struct wl1273_core *core = radio->core;
571 struct wl1273_fm_platform_data *pdata = core->pdata;
572 struct device *dev = radio->dev;
573 int r = -EINVAL;
574
575 if (pdata->enable && core->mode == WL1273_MODE_OFF) {
576 dev_dbg(radio->dev, "Out of reset\n");
577
578 pdata->enable();
579 msleep(250);
580 }
581
582 if (new_mode == WL1273_MODE_RX) {
583 u16 val = WL1273_POWER_SET_FM;
584
585 if (radio->rds_on)
586 val |= WL1273_POWER_SET_RDS;
587
588 /* If this fails try again */
589 r = core->write(core, WL1273_POWER_SET, val);
590 if (r) {
591 msleep(100);
592
593 r = core->write(core, WL1273_POWER_SET, val);
594 if (r) {
595 dev_err(dev, "%s: POWER_SET fails\n", __func__);
596 goto fail;
597 }
598 }
599
600 /* rds buffer configuration */
601 radio->wr_index = 0;
602 radio->rd_index = 0;
603
604 } else if (new_mode == WL1273_MODE_TX) {
605 /* If this fails try again once */
606 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
607 if (r) {
608 msleep(100);
609 r = core->write(core, WL1273_PUPD_SET,
610 WL1273_PUPD_SET_ON);
611 if (r) {
612 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
613 goto fail;
614 }
615 }
616
617 if (radio->rds_on)
618 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
619 else
620 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
621 } else {
622 dev_warn(dev, "%s: Illegal mode.\n", __func__);
623 }
624
625 if (core->mode == WL1273_MODE_OFF) {
626 r = wl1273_fm_upload_firmware_patch(radio);
627 if (r)
628 dev_warn(dev, "Firmware upload failed.\n");
629
630 /*
631 * Sometimes the chip is in a wrong power state at this point.
632 * So we set the power once again.
633 */
634 if (new_mode == WL1273_MODE_RX) {
635 u16 val = WL1273_POWER_SET_FM;
636
637 if (radio->rds_on)
638 val |= WL1273_POWER_SET_RDS;
639
640 r = core->write(core, WL1273_POWER_SET, val);
641 if (r) {
642 dev_err(dev, "%s: POWER_SET fails\n", __func__);
643 goto fail;
644 }
645 } else if (new_mode == WL1273_MODE_TX) {
646 r = core->write(core, WL1273_PUPD_SET,
647 WL1273_PUPD_SET_ON);
648 if (r) {
649 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
650 goto fail;
651 }
652 }
653 }
654
655 return 0;
656 fail:
657 if (pdata->disable)
658 pdata->disable();
659
660 dev_dbg(dev, "%s: return: %d\n", __func__, r);
661 return r;
662 }
663
wl1273_fm_suspend(struct wl1273_device * radio)664 static int wl1273_fm_suspend(struct wl1273_device *radio)
665 {
666 struct wl1273_core *core = radio->core;
667 int r = 0;
668
669 /* Cannot go from OFF to SUSPENDED */
670 if (core->mode == WL1273_MODE_RX)
671 r = core->write(core, WL1273_POWER_SET,
672 WL1273_POWER_SET_RETENTION);
673 else if (core->mode == WL1273_MODE_TX)
674 r = core->write(core, WL1273_PUPD_SET,
675 WL1273_PUPD_SET_RETENTION);
676 else
677 r = -EINVAL;
678
679 if (r) {
680 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
681 goto out;
682 }
683
684 out:
685 return r;
686 }
687
wl1273_fm_set_mode(struct wl1273_device * radio,int mode)688 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
689 {
690 struct wl1273_core *core = radio->core;
691 struct device *dev = radio->dev;
692 int old_mode;
693 int r;
694
695 dev_dbg(dev, "%s\n", __func__);
696 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
697
698 old_mode = core->mode;
699 if (mode & radio->forbidden) {
700 r = -EPERM;
701 goto out;
702 }
703
704 switch (mode) {
705 case WL1273_MODE_RX:
706 case WL1273_MODE_TX:
707 r = wl1273_fm_start(radio, mode);
708 if (r) {
709 dev_err(dev, "%s: Cannot start.\n", __func__);
710 wl1273_fm_stop(radio);
711 goto out;
712 }
713
714 core->mode = mode;
715 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
716 if (r) {
717 dev_err(dev, "INT_MASK_SET fails.\n");
718 goto out;
719 }
720
721 /* remember previous settings */
722 if (mode == WL1273_MODE_RX) {
723 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
724 if (r) {
725 dev_err(dev, "set freq fails: %d.\n", r);
726 goto out;
727 }
728
729 r = core->set_volume(core, core->volume);
730 if (r) {
731 dev_err(dev, "set volume fails: %d.\n", r);
732 goto out;
733 }
734
735 dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
736 core->volume);
737 } else {
738 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
739 if (r) {
740 dev_err(dev, "set freq fails: %d.\n", r);
741 goto out;
742 }
743 }
744
745 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
746
747 r = core->set_audio(core, core->audio_mode);
748 if (r)
749 dev_err(dev, "Cannot set audio mode.\n");
750 break;
751
752 case WL1273_MODE_OFF:
753 r = wl1273_fm_stop(radio);
754 if (r)
755 dev_err(dev, "%s: Off fails: %d\n", __func__, r);
756 else
757 core->mode = WL1273_MODE_OFF;
758
759 break;
760
761 case WL1273_MODE_SUSPENDED:
762 r = wl1273_fm_suspend(radio);
763 if (r)
764 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
765 else
766 core->mode = WL1273_MODE_SUSPENDED;
767
768 break;
769
770 default:
771 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
772 r = -EINVAL;
773 break;
774 }
775 out:
776 if (r)
777 core->mode = old_mode;
778
779 return r;
780 }
781
wl1273_fm_set_seek(struct wl1273_device * radio,unsigned int wrap_around,unsigned int seek_upward,int level)782 static int wl1273_fm_set_seek(struct wl1273_device *radio,
783 unsigned int wrap_around,
784 unsigned int seek_upward,
785 int level)
786 {
787 struct wl1273_core *core = radio->core;
788 int r = 0;
789 unsigned int dir = (seek_upward == 0) ? 0 : 1;
790 unsigned int f;
791
792 f = radio->rx_frequency;
793 dev_dbg(radio->dev, "rx_frequency: %d\n", f);
794
795 if (dir && f + radio->spacing <= radio->rangehigh)
796 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
797 else if (dir && wrap_around)
798 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
799 else if (f - radio->spacing >= radio->rangelow)
800 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
801 else if (wrap_around)
802 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
803
804 if (r)
805 goto out;
806
807 if (level < SCHAR_MIN || level > SCHAR_MAX)
808 return -EINVAL;
809
810 reinit_completion(&radio->busy);
811 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
812
813 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
814 if (r)
815 goto out;
816
817 dev_dbg(radio->dev, "%s\n", __func__);
818
819 r = core->write(core, WL1273_SEARCH_LVL_SET, level);
820 if (r)
821 goto out;
822
823 r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
824 if (r)
825 goto out;
826
827 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
828 if (r)
829 goto out;
830
831 /* wait for the FR IRQ */
832 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
833 if (!(radio->irq_received & WL1273_BL_EVENT)) {
834 r = -ETIMEDOUT;
835 goto out;
836 }
837
838 radio->irq_received &= ~WL1273_BL_EVENT;
839
840 if (!wrap_around)
841 goto out;
842
843 /* Wrap around */
844 dev_dbg(radio->dev, "Wrap around in HW seek.\n");
845
846 if (seek_upward)
847 f = radio->rangelow;
848 else
849 f = radio->rangehigh;
850
851 r = wl1273_fm_set_rx_freq(radio, f);
852 if (r)
853 goto out;
854
855 reinit_completion(&radio->busy);
856 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
857
858 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
859 if (r)
860 goto out;
861
862 /* wait for the FR IRQ */
863 if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))
864 r = -ETIMEDOUT;
865 out:
866 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
867 return r;
868 }
869
870 /**
871 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.
872 * @radio: A pointer to the device struct.
873 */
wl1273_fm_get_tx_ctune(struct wl1273_device * radio)874 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
875 {
876 struct wl1273_core *core = radio->core;
877 struct device *dev = radio->dev;
878 u16 val;
879 int r;
880
881 if (core->mode == WL1273_MODE_OFF ||
882 core->mode == WL1273_MODE_SUSPENDED)
883 return -EPERM;
884
885 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
886 if (r) {
887 dev_err(dev, "%s: read error: %d\n", __func__, r);
888 goto out;
889 }
890
891 out:
892 return val;
893 }
894
895 /**
896 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
897 * @radio: A pointer to the device struct.
898 * @preemphasis: The new pre-amphasis value.
899 *
900 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
901 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
902 */
wl1273_fm_set_preemphasis(struct wl1273_device * radio,unsigned int preemphasis)903 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
904 unsigned int preemphasis)
905 {
906 struct wl1273_core *core = radio->core;
907 int r;
908 u16 em;
909
910 if (core->mode == WL1273_MODE_OFF ||
911 core->mode == WL1273_MODE_SUSPENDED)
912 return -EPERM;
913
914 mutex_lock(&core->lock);
915
916 switch (preemphasis) {
917 case V4L2_PREEMPHASIS_DISABLED:
918 em = 1;
919 break;
920 case V4L2_PREEMPHASIS_50_uS:
921 em = 0;
922 break;
923 case V4L2_PREEMPHASIS_75_uS:
924 em = 2;
925 break;
926 default:
927 r = -EINVAL;
928 goto out;
929 }
930
931 r = core->write(core, WL1273_PREMPH_SET, em);
932 if (r)
933 goto out;
934
935 radio->preemphasis = preemphasis;
936
937 out:
938 mutex_unlock(&core->lock);
939 return r;
940 }
941
wl1273_fm_rds_on(struct wl1273_device * radio)942 static int wl1273_fm_rds_on(struct wl1273_device *radio)
943 {
944 struct wl1273_core *core = radio->core;
945 int r;
946
947 dev_dbg(radio->dev, "%s\n", __func__);
948 if (radio->rds_on)
949 return 0;
950
951 r = core->write(core, WL1273_POWER_SET,
952 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
953 if (r)
954 goto out;
955
956 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
957 if (r)
958 dev_err(radio->dev, "set freq fails: %d.\n", r);
959 out:
960 return r;
961 }
962
wl1273_fm_rds_off(struct wl1273_device * radio)963 static int wl1273_fm_rds_off(struct wl1273_device *radio)
964 {
965 struct wl1273_core *core = radio->core;
966 int r;
967
968 if (!radio->rds_on)
969 return 0;
970
971 radio->irq_flags &= ~WL1273_RDS_EVENT;
972
973 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
974 if (r)
975 goto out;
976
977 /* Service pending read */
978 wake_up_interruptible(&radio->read_queue);
979
980 dev_dbg(radio->dev, "%s\n", __func__);
981
982 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
983 if (r)
984 goto out;
985
986 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
987 if (r)
988 dev_err(radio->dev, "set freq fails: %d.\n", r);
989 out:
990 dev_dbg(radio->dev, "%s: exiting...\n", __func__);
991
992 return r;
993 }
994
wl1273_fm_set_rds(struct wl1273_device * radio,unsigned int new_mode)995 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
996 {
997 int r = 0;
998 struct wl1273_core *core = radio->core;
999
1000 if (core->mode == WL1273_MODE_OFF ||
1001 core->mode == WL1273_MODE_SUSPENDED)
1002 return -EPERM;
1003
1004 if (new_mode == WL1273_RDS_RESET) {
1005 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1006 return r;
1007 }
1008
1009 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1010 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1011 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1012 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1013 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1014 r = wl1273_fm_rds_off(radio);
1015 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1016 r = wl1273_fm_rds_on(radio);
1017 } else {
1018 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1019 __func__, new_mode);
1020 r = -EINVAL;
1021 }
1022
1023 if (!r)
1024 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1025
1026 return r;
1027 }
1028
wl1273_fm_fops_write(struct file * file,const char __user * buf,size_t count,loff_t * ppos)1029 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1030 size_t count, loff_t *ppos)
1031 {
1032 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1033 struct wl1273_core *core = radio->core;
1034 u16 val;
1035 int r;
1036
1037 dev_dbg(radio->dev, "%s\n", __func__);
1038
1039 if (core->mode != WL1273_MODE_TX)
1040 return count;
1041
1042 if (radio->rds_users == 0) {
1043 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1044 return 0;
1045 }
1046
1047 if (mutex_lock_interruptible(&core->lock))
1048 return -EINTR;
1049 /*
1050 * Multiple processes can open the device, but only
1051 * one gets to write to it.
1052 */
1053 if (radio->owner && radio->owner != file) {
1054 r = -EBUSY;
1055 goto out;
1056 }
1057 radio->owner = file;
1058
1059 /* Manual Mode */
1060 if (count > 255)
1061 val = 255;
1062 else
1063 val = count;
1064
1065 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1066
1067 if (copy_from_user(radio->write_buf + 1, buf, val)) {
1068 r = -EFAULT;
1069 goto out;
1070 }
1071
1072 dev_dbg(radio->dev, "Count: %d\n", val);
1073 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1074
1075 radio->write_buf[0] = WL1273_RDS_DATA_SET;
1076 core->write_data(core, radio->write_buf, val + 1);
1077
1078 r = val;
1079 out:
1080 mutex_unlock(&core->lock);
1081
1082 return r;
1083 }
1084
wl1273_fm_fops_poll(struct file * file,struct poll_table_struct * pts)1085 static unsigned int wl1273_fm_fops_poll(struct file *file,
1086 struct poll_table_struct *pts)
1087 {
1088 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1089 struct wl1273_core *core = radio->core;
1090
1091 if (radio->owner && radio->owner != file)
1092 return -EBUSY;
1093
1094 radio->owner = file;
1095
1096 if (core->mode == WL1273_MODE_RX) {
1097 poll_wait(file, &radio->read_queue, pts);
1098
1099 if (radio->rd_index != radio->wr_index)
1100 return POLLIN | POLLRDNORM;
1101
1102 } else if (core->mode == WL1273_MODE_TX) {
1103 return POLLOUT | POLLWRNORM;
1104 }
1105
1106 return 0;
1107 }
1108
wl1273_fm_fops_open(struct file * file)1109 static int wl1273_fm_fops_open(struct file *file)
1110 {
1111 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1112 struct wl1273_core *core = radio->core;
1113 int r = 0;
1114
1115 dev_dbg(radio->dev, "%s\n", __func__);
1116
1117 if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1118 !radio->rds_users) {
1119 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1120
1121 if (mutex_lock_interruptible(&core->lock))
1122 return -EINTR;
1123
1124 radio->irq_flags |= WL1273_RDS_EVENT;
1125
1126 r = core->write(core, WL1273_INT_MASK_SET,
1127 radio->irq_flags);
1128 if (r) {
1129 mutex_unlock(&core->lock);
1130 goto out;
1131 }
1132
1133 radio->rds_users++;
1134
1135 mutex_unlock(&core->lock);
1136 }
1137 out:
1138 return r;
1139 }
1140
wl1273_fm_fops_release(struct file * file)1141 static int wl1273_fm_fops_release(struct file *file)
1142 {
1143 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1144 struct wl1273_core *core = radio->core;
1145 int r = 0;
1146
1147 dev_dbg(radio->dev, "%s\n", __func__);
1148
1149 if (radio->rds_users > 0) {
1150 radio->rds_users--;
1151 if (radio->rds_users == 0) {
1152 mutex_lock(&core->lock);
1153
1154 radio->irq_flags &= ~WL1273_RDS_EVENT;
1155
1156 if (core->mode == WL1273_MODE_RX) {
1157 r = core->write(core,
1158 WL1273_INT_MASK_SET,
1159 radio->irq_flags);
1160 if (r) {
1161 mutex_unlock(&core->lock);
1162 goto out;
1163 }
1164 }
1165 mutex_unlock(&core->lock);
1166 }
1167 }
1168
1169 if (file == radio->owner)
1170 radio->owner = NULL;
1171 out:
1172 return r;
1173 }
1174
wl1273_fm_fops_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)1175 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1176 size_t count, loff_t *ppos)
1177 {
1178 int r = 0;
1179 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1180 struct wl1273_core *core = radio->core;
1181 unsigned int block_count = 0;
1182 u16 val;
1183
1184 dev_dbg(radio->dev, "%s\n", __func__);
1185
1186 if (core->mode != WL1273_MODE_RX)
1187 return 0;
1188
1189 if (radio->rds_users == 0) {
1190 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1191 return 0;
1192 }
1193
1194 if (mutex_lock_interruptible(&core->lock))
1195 return -EINTR;
1196
1197 /*
1198 * Multiple processes can open the device, but only
1199 * one at a time gets read access.
1200 */
1201 if (radio->owner && radio->owner != file) {
1202 r = -EBUSY;
1203 goto out;
1204 }
1205 radio->owner = file;
1206
1207 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1208 if (r) {
1209 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1210 goto out;
1211 } else if (val == 0) {
1212 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1213 r = -ENODATA;
1214 goto out;
1215 }
1216
1217 /* block if no new data available */
1218 while (radio->wr_index == radio->rd_index) {
1219 if (file->f_flags & O_NONBLOCK) {
1220 r = -EWOULDBLOCK;
1221 goto out;
1222 }
1223
1224 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1225 if (wait_event_interruptible(radio->read_queue,
1226 radio->wr_index !=
1227 radio->rd_index) < 0) {
1228 r = -EINTR;
1229 goto out;
1230 }
1231 }
1232
1233 /* calculate block count from byte count */
1234 count /= RDS_BLOCK_SIZE;
1235
1236 /* copy RDS blocks from the internal buffer and to user buffer */
1237 while (block_count < count) {
1238 if (radio->rd_index == radio->wr_index)
1239 break;
1240
1241 /* always transfer complete RDS blocks */
1242 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1243 RDS_BLOCK_SIZE))
1244 break;
1245
1246 /* increment and wrap the read pointer */
1247 radio->rd_index += RDS_BLOCK_SIZE;
1248 if (radio->rd_index >= radio->buf_size)
1249 radio->rd_index = 0;
1250
1251 /* increment counters */
1252 block_count++;
1253 buf += RDS_BLOCK_SIZE;
1254 r += RDS_BLOCK_SIZE;
1255 }
1256
1257 out:
1258 dev_dbg(radio->dev, "%s: exit\n", __func__);
1259 mutex_unlock(&core->lock);
1260
1261 return r;
1262 }
1263
1264 static const struct v4l2_file_operations wl1273_fops = {
1265 .owner = THIS_MODULE,
1266 .read = wl1273_fm_fops_read,
1267 .write = wl1273_fm_fops_write,
1268 .poll = wl1273_fm_fops_poll,
1269 .unlocked_ioctl = video_ioctl2,
1270 .open = wl1273_fm_fops_open,
1271 .release = wl1273_fm_fops_release,
1272 };
1273
wl1273_fm_vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * capability)1274 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1275 struct v4l2_capability *capability)
1276 {
1277 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1278
1279 dev_dbg(radio->dev, "%s\n", __func__);
1280
1281 strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1282 sizeof(capability->driver));
1283 strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1284 sizeof(capability->card));
1285 strlcpy(capability->bus_info, radio->bus_type,
1286 sizeof(capability->bus_info));
1287
1288 capability->device_caps = V4L2_CAP_HW_FREQ_SEEK |
1289 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1290 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1291 V4L2_CAP_RDS_OUTPUT;
1292 capability->capabilities = capability->device_caps |
1293 V4L2_CAP_DEVICE_CAPS;
1294
1295 return 0;
1296 }
1297
wl1273_fm_vidioc_g_input(struct file * file,void * priv,unsigned int * i)1298 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1299 unsigned int *i)
1300 {
1301 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1302
1303 dev_dbg(radio->dev, "%s\n", __func__);
1304
1305 *i = 0;
1306
1307 return 0;
1308 }
1309
wl1273_fm_vidioc_s_input(struct file * file,void * priv,unsigned int i)1310 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1311 unsigned int i)
1312 {
1313 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1314
1315 dev_dbg(radio->dev, "%s\n", __func__);
1316
1317 if (i != 0)
1318 return -EINVAL;
1319
1320 return 0;
1321 }
1322
1323 /**
1324 * wl1273_fm_set_tx_power() - Set the transmission power value.
1325 * @core: A pointer to the device struct.
1326 * @power: The new power value.
1327 */
wl1273_fm_set_tx_power(struct wl1273_device * radio,u16 power)1328 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1329 {
1330 struct wl1273_core *core = radio->core;
1331 int r;
1332
1333 if (core->mode == WL1273_MODE_OFF ||
1334 core->mode == WL1273_MODE_SUSPENDED)
1335 return -EPERM;
1336
1337 mutex_lock(&core->lock);
1338
1339 /* Convert the dBuV value to chip presentation */
1340 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1341 if (r)
1342 goto out;
1343
1344 radio->tx_power = power;
1345
1346 out:
1347 mutex_unlock(&core->lock);
1348 return r;
1349 }
1350
1351 #define WL1273_SPACING_50kHz 1
1352 #define WL1273_SPACING_100kHz 2
1353 #define WL1273_SPACING_200kHz 4
1354
wl1273_fm_tx_set_spacing(struct wl1273_device * radio,unsigned int spacing)1355 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1356 unsigned int spacing)
1357 {
1358 struct wl1273_core *core = radio->core;
1359 int r;
1360
1361 if (spacing == 0) {
1362 r = core->write(core, WL1273_SCAN_SPACING_SET,
1363 WL1273_SPACING_100kHz);
1364 radio->spacing = 100;
1365 } else if (spacing - 50000 < 25000) {
1366 r = core->write(core, WL1273_SCAN_SPACING_SET,
1367 WL1273_SPACING_50kHz);
1368 radio->spacing = 50;
1369 } else if (spacing - 100000 < 50000) {
1370 r = core->write(core, WL1273_SCAN_SPACING_SET,
1371 WL1273_SPACING_100kHz);
1372 radio->spacing = 100;
1373 } else {
1374 r = core->write(core, WL1273_SCAN_SPACING_SET,
1375 WL1273_SPACING_200kHz);
1376 radio->spacing = 200;
1377 }
1378
1379 return r;
1380 }
1381
wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl * ctrl)1382 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1383 {
1384 struct wl1273_device *radio = ctrl->priv;
1385 struct wl1273_core *core = radio->core;
1386
1387 dev_dbg(radio->dev, "%s\n", __func__);
1388
1389 if (mutex_lock_interruptible(&core->lock))
1390 return -EINTR;
1391
1392 switch (ctrl->id) {
1393 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1394 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1395 break;
1396
1397 default:
1398 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1399 __func__, ctrl->id);
1400 break;
1401 }
1402
1403 mutex_unlock(&core->lock);
1404
1405 return 0;
1406 }
1407
1408 #define WL1273_MUTE_SOFT_ENABLE (1 << 0)
1409 #define WL1273_MUTE_AC (1 << 1)
1410 #define WL1273_MUTE_HARD_LEFT (1 << 2)
1411 #define WL1273_MUTE_HARD_RIGHT (1 << 3)
1412 #define WL1273_MUTE_SOFT_FORCE (1 << 4)
1413
to_radio(struct v4l2_ctrl * ctrl)1414 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1415 {
1416 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1417 }
1418
wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl * ctrl)1419 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1420 {
1421 struct wl1273_device *radio = to_radio(ctrl);
1422 struct wl1273_core *core = radio->core;
1423 int r = 0;
1424
1425 dev_dbg(radio->dev, "%s\n", __func__);
1426
1427 switch (ctrl->id) {
1428 case V4L2_CID_AUDIO_MUTE:
1429 if (mutex_lock_interruptible(&core->lock))
1430 return -EINTR;
1431
1432 if (core->mode == WL1273_MODE_RX && ctrl->val)
1433 r = core->write(core,
1434 WL1273_MUTE_STATUS_SET,
1435 WL1273_MUTE_HARD_LEFT |
1436 WL1273_MUTE_HARD_RIGHT);
1437 else if (core->mode == WL1273_MODE_RX)
1438 r = core->write(core,
1439 WL1273_MUTE_STATUS_SET, 0x0);
1440 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1441 r = core->write(core, WL1273_MUTE, 1);
1442 else if (core->mode == WL1273_MODE_TX)
1443 r = core->write(core, WL1273_MUTE, 0);
1444
1445 mutex_unlock(&core->lock);
1446 break;
1447
1448 case V4L2_CID_AUDIO_VOLUME:
1449 if (ctrl->val == 0)
1450 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1451 else
1452 r = core->set_volume(core, core->volume);
1453 break;
1454
1455 case V4L2_CID_TUNE_PREEMPHASIS:
1456 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1457 break;
1458
1459 case V4L2_CID_TUNE_POWER_LEVEL:
1460 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1461 break;
1462
1463 default:
1464 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1465 __func__, ctrl->id);
1466 break;
1467 }
1468
1469 dev_dbg(radio->dev, "%s\n", __func__);
1470 return r;
1471 }
1472
wl1273_fm_vidioc_g_audio(struct file * file,void * priv,struct v4l2_audio * audio)1473 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1474 struct v4l2_audio *audio)
1475 {
1476 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1477
1478 dev_dbg(radio->dev, "%s\n", __func__);
1479
1480 if (audio->index > 1)
1481 return -EINVAL;
1482
1483 strlcpy(audio->name, "Radio", sizeof(audio->name));
1484 audio->capability = V4L2_AUDCAP_STEREO;
1485
1486 return 0;
1487 }
1488
wl1273_fm_vidioc_s_audio(struct file * file,void * priv,const struct v4l2_audio * audio)1489 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1490 const struct v4l2_audio *audio)
1491 {
1492 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1493
1494 dev_dbg(radio->dev, "%s\n", __func__);
1495
1496 if (audio->index != 0)
1497 return -EINVAL;
1498
1499 return 0;
1500 }
1501
1502 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1503 #define WL1273_RDS_SYNCHRONIZED 1
1504
wl1273_fm_vidioc_g_tuner(struct file * file,void * priv,struct v4l2_tuner * tuner)1505 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1506 struct v4l2_tuner *tuner)
1507 {
1508 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1509 struct wl1273_core *core = radio->core;
1510 u16 val;
1511 int r;
1512
1513 dev_dbg(radio->dev, "%s\n", __func__);
1514
1515 if (tuner->index > 0)
1516 return -EINVAL;
1517
1518 strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1519 tuner->type = V4L2_TUNER_RADIO;
1520
1521 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1522 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1523
1524 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1525 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1526 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1527
1528 if (radio->stereo)
1529 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1530 else
1531 tuner->audmode = V4L2_TUNER_MODE_MONO;
1532
1533 if (core->mode != WL1273_MODE_RX)
1534 return 0;
1535
1536 if (mutex_lock_interruptible(&core->lock))
1537 return -EINTR;
1538
1539 r = core->read(core, WL1273_STEREO_GET, &val);
1540 if (r)
1541 goto out;
1542
1543 if (val == 1)
1544 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1545 else
1546 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1547
1548 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1549 if (r)
1550 goto out;
1551
1552 tuner->signal = (s16) val;
1553 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1554
1555 tuner->afc = 0;
1556
1557 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1558 if (r)
1559 goto out;
1560
1561 if (val == WL1273_RDS_SYNCHRONIZED)
1562 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1563 out:
1564 mutex_unlock(&core->lock);
1565
1566 return r;
1567 }
1568
wl1273_fm_vidioc_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * tuner)1569 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1570 const struct v4l2_tuner *tuner)
1571 {
1572 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1573 struct wl1273_core *core = radio->core;
1574 int r = 0;
1575
1576 dev_dbg(radio->dev, "%s\n", __func__);
1577 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1578 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1579 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1580 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1581 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1582 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1583
1584 if (tuner->index > 0)
1585 return -EINVAL;
1586
1587 if (mutex_lock_interruptible(&core->lock))
1588 return -EINTR;
1589
1590 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1591 if (r)
1592 goto out;
1593
1594 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1595 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1596 else
1597 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1598
1599 if (r)
1600 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1601
1602 if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1603 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1604 if (r < 0) {
1605 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1606 __func__, r);
1607 goto out;
1608 }
1609 radio->stereo = false;
1610 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1611 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1612 if (r < 0) {
1613 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1614 __func__, r);
1615 goto out;
1616 }
1617 radio->stereo = true;
1618 } else {
1619 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1620 __func__, tuner->audmode);
1621 r = -EINVAL;
1622 goto out;
1623 }
1624
1625 out:
1626 mutex_unlock(&core->lock);
1627
1628 return r;
1629 }
1630
wl1273_fm_vidioc_g_frequency(struct file * file,void * priv,struct v4l2_frequency * freq)1631 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1632 struct v4l2_frequency *freq)
1633 {
1634 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1635 struct wl1273_core *core = radio->core;
1636
1637 dev_dbg(radio->dev, "%s\n", __func__);
1638
1639 if (mutex_lock_interruptible(&core->lock))
1640 return -EINTR;
1641
1642 freq->type = V4L2_TUNER_RADIO;
1643 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1644
1645 mutex_unlock(&core->lock);
1646
1647 return 0;
1648 }
1649
wl1273_fm_vidioc_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * freq)1650 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1651 const struct v4l2_frequency *freq)
1652 {
1653 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1654 struct wl1273_core *core = radio->core;
1655 int r;
1656
1657 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1658
1659 if (freq->type != V4L2_TUNER_RADIO) {
1660 dev_dbg(radio->dev,
1661 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1662 return -EINVAL;
1663 }
1664
1665 if (mutex_lock_interruptible(&core->lock))
1666 return -EINTR;
1667
1668 if (core->mode == WL1273_MODE_RX) {
1669 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1670
1671 r = wl1273_fm_set_rx_freq(radio,
1672 WL1273_INV_FREQ(freq->frequency));
1673 if (r)
1674 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1675 ": set frequency failed with %d\n", r);
1676 } else {
1677 r = wl1273_fm_set_tx_freq(radio,
1678 WL1273_INV_FREQ(freq->frequency));
1679 if (r)
1680 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1681 ": set frequency failed with %d\n", r);
1682 }
1683
1684 mutex_unlock(&core->lock);
1685
1686 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1687 return r;
1688 }
1689
1690 #define WL1273_DEFAULT_SEEK_LEVEL 7
1691
wl1273_fm_vidioc_s_hw_freq_seek(struct file * file,void * priv,const struct v4l2_hw_freq_seek * seek)1692 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1693 const struct v4l2_hw_freq_seek *seek)
1694 {
1695 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1696 struct wl1273_core *core = radio->core;
1697 int r;
1698
1699 dev_dbg(radio->dev, "%s\n", __func__);
1700
1701 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1702 return -EINVAL;
1703
1704 if (file->f_flags & O_NONBLOCK)
1705 return -EWOULDBLOCK;
1706
1707 if (mutex_lock_interruptible(&core->lock))
1708 return -EINTR;
1709
1710 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1711 if (r)
1712 goto out;
1713
1714 r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1715 if (r)
1716 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1717
1718 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1719 WL1273_DEFAULT_SEEK_LEVEL);
1720 if (r)
1721 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1722
1723 out:
1724 mutex_unlock(&core->lock);
1725 return r;
1726 }
1727
wl1273_fm_vidioc_s_modulator(struct file * file,void * priv,const struct v4l2_modulator * modulator)1728 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1729 const struct v4l2_modulator *modulator)
1730 {
1731 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1732 struct wl1273_core *core = radio->core;
1733 int r = 0;
1734
1735 dev_dbg(radio->dev, "%s\n", __func__);
1736
1737 if (modulator->index > 0)
1738 return -EINVAL;
1739
1740 if (mutex_lock_interruptible(&core->lock))
1741 return -EINTR;
1742
1743 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1744 if (r)
1745 goto out;
1746
1747 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1748 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1749 else
1750 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1751
1752 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1753 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1754 else
1755 r = core->write(core, WL1273_MONO_SET,
1756 WL1273_RX_STEREO);
1757 if (r < 0)
1758 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1759 "MONO_SET fails: %d\n", r);
1760 out:
1761 mutex_unlock(&core->lock);
1762
1763 return r;
1764 }
1765
wl1273_fm_vidioc_g_modulator(struct file * file,void * priv,struct v4l2_modulator * modulator)1766 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1767 struct v4l2_modulator *modulator)
1768 {
1769 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1770 struct wl1273_core *core = radio->core;
1771 u16 val;
1772 int r;
1773
1774 dev_dbg(radio->dev, "%s\n", __func__);
1775
1776 strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1777 sizeof(modulator->name));
1778
1779 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1780 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1781
1782 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1783 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1784
1785 if (core->mode != WL1273_MODE_TX)
1786 return 0;
1787
1788 if (mutex_lock_interruptible(&core->lock))
1789 return -EINTR;
1790
1791 r = core->read(core, WL1273_MONO_SET, &val);
1792 if (r)
1793 goto out;
1794
1795 if (val == WL1273_TX_STEREO)
1796 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1797 else
1798 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1799
1800 if (radio->rds_on)
1801 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1802 out:
1803 mutex_unlock(&core->lock);
1804
1805 return 0;
1806 }
1807
wl1273_fm_vidioc_log_status(struct file * file,void * priv)1808 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1809 {
1810 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1811 struct wl1273_core *core = radio->core;
1812 struct device *dev = radio->dev;
1813 u16 val;
1814 int r;
1815
1816 dev_info(dev, DRIVER_DESC);
1817
1818 if (core->mode == WL1273_MODE_OFF) {
1819 dev_info(dev, "Mode: Off\n");
1820 return 0;
1821 }
1822
1823 if (core->mode == WL1273_MODE_SUSPENDED) {
1824 dev_info(dev, "Mode: Suspended\n");
1825 return 0;
1826 }
1827
1828 r = core->read(core, WL1273_ASIC_ID_GET, &val);
1829 if (r)
1830 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1831 else
1832 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1833
1834 r = core->read(core, WL1273_ASIC_VER_GET, &val);
1835 if (r)
1836 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1837 else
1838 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1839
1840 r = core->read(core, WL1273_FIRM_VER_GET, &val);
1841 if (r)
1842 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1843 else
1844 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1845
1846 r = core->read(core, WL1273_BAND_SET, &val);
1847 if (r)
1848 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1849 else
1850 dev_info(dev, "BAND: %d\n", val);
1851
1852 if (core->mode == WL1273_MODE_TX) {
1853 r = core->read(core, WL1273_PUPD_SET, &val);
1854 if (r)
1855 dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1856 else
1857 dev_info(dev, "PUPD: 0x%04x\n", val);
1858
1859 r = core->read(core, WL1273_CHANL_SET, &val);
1860 if (r)
1861 dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1862 else
1863 dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1864 } else if (core->mode == WL1273_MODE_RX) {
1865 int bf = radio->rangelow;
1866
1867 r = core->read(core, WL1273_FREQ_SET, &val);
1868 if (r)
1869 dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1870 else
1871 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1872
1873 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1874 if (r)
1875 dev_err(dev, "%s: Get MOST_MODE fails.\n",
1876 __func__);
1877 else if (val == 0)
1878 dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1879 else if (val == 1)
1880 dev_info(dev, "MOST_MODE: Force mono output\n");
1881 else
1882 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1883
1884 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1885 if (r)
1886 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1887 else if (val == 0)
1888 dev_info(dev,
1889 "MOST_BLEND: Switched blend & hysteresis.\n");
1890 else if (val == 1)
1891 dev_info(dev, "MOST_BLEND: Soft blend.\n");
1892 else
1893 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1894
1895 r = core->read(core, WL1273_STEREO_GET, &val);
1896 if (r)
1897 dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1898 else if (val == 0)
1899 dev_info(dev, "STEREO: Not detected\n");
1900 else if (val == 1)
1901 dev_info(dev, "STEREO: Detected\n");
1902 else
1903 dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1904
1905 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1906 if (r)
1907 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1908 else
1909 dev_info(dev, "RX signal strength: %d\n", (s16) val);
1910
1911 r = core->read(core, WL1273_POWER_SET, &val);
1912 if (r)
1913 dev_err(dev, "%s: Get POWER fails.\n", __func__);
1914 else
1915 dev_info(dev, "POWER: 0x%04x\n", val);
1916
1917 r = core->read(core, WL1273_INT_MASK_SET, &val);
1918 if (r)
1919 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1920 else
1921 dev_info(dev, "INT_MASK: 0x%04x\n", val);
1922
1923 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1924 if (r)
1925 dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1926 __func__);
1927 else if (val == 0)
1928 dev_info(dev, "RDS_SYNC: Not synchronized\n");
1929
1930 else if (val == 1)
1931 dev_info(dev, "RDS_SYNC: Synchronized\n");
1932 else
1933 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1934
1935 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1936 if (r)
1937 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1938 __func__);
1939 else
1940 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1941
1942 r = core->read(core, WL1273_VOLUME_SET, &val);
1943 if (r)
1944 dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1945 else
1946 dev_info(dev, "VOLUME: 0x%04x\n", val);
1947 }
1948
1949 return 0;
1950 }
1951
wl1273_vdev_release(struct video_device * dev)1952 static void wl1273_vdev_release(struct video_device *dev)
1953 {
1954 }
1955
1956 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1957 .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1958 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1959 };
1960
1961 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1962 .vidioc_querycap = wl1273_fm_vidioc_querycap,
1963 .vidioc_g_input = wl1273_fm_vidioc_g_input,
1964 .vidioc_s_input = wl1273_fm_vidioc_s_input,
1965 .vidioc_g_audio = wl1273_fm_vidioc_g_audio,
1966 .vidioc_s_audio = wl1273_fm_vidioc_s_audio,
1967 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner,
1968 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner,
1969 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency,
1970 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency,
1971 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,
1972 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator,
1973 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator,
1974 .vidioc_log_status = wl1273_fm_vidioc_log_status,
1975 };
1976
1977 static struct video_device wl1273_viddev_template = {
1978 .fops = &wl1273_fops,
1979 .ioctl_ops = &wl1273_ioctl_ops,
1980 .name = WL1273_FM_DRIVER_NAME,
1981 .release = wl1273_vdev_release,
1982 .vfl_dir = VFL_DIR_TX,
1983 };
1984
wl1273_fm_radio_remove(struct platform_device * pdev)1985 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1986 {
1987 struct wl1273_device *radio = platform_get_drvdata(pdev);
1988 struct wl1273_core *core = radio->core;
1989
1990 dev_info(&pdev->dev, "%s.\n", __func__);
1991
1992 free_irq(core->client->irq, radio);
1993 core->pdata->free_resources();
1994
1995 v4l2_ctrl_handler_free(&radio->ctrl_handler);
1996 video_unregister_device(&radio->videodev);
1997 v4l2_device_unregister(&radio->v4l2dev);
1998
1999 return 0;
2000 }
2001
wl1273_fm_radio_probe(struct platform_device * pdev)2002 static int wl1273_fm_radio_probe(struct platform_device *pdev)
2003 {
2004 struct wl1273_core **core = pdev->dev.platform_data;
2005 struct wl1273_device *radio;
2006 struct v4l2_ctrl *ctrl;
2007 int r = 0;
2008
2009 pr_debug("%s\n", __func__);
2010
2011 if (!core) {
2012 dev_err(&pdev->dev, "No platform data.\n");
2013 r = -EINVAL;
2014 goto pdata_err;
2015 }
2016
2017 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2018 if (!radio) {
2019 r = -ENOMEM;
2020 goto pdata_err;
2021 }
2022
2023 /* RDS buffer allocation */
2024 radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2025 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2026 if (!radio->buffer) {
2027 pr_err("Cannot allocate memory for RDS buffer.\n");
2028 r = -ENOMEM;
2029 goto pdata_err;
2030 }
2031
2032 radio->core = *core;
2033 radio->irq_flags = WL1273_IRQ_MASK;
2034 radio->dev = &radio->core->client->dev;
2035 radio->rds_on = false;
2036 radio->core->mode = WL1273_MODE_OFF;
2037 radio->tx_power = 118;
2038 radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2039 radio->band = WL1273_BAND_OTHER;
2040 radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2041 radio->core->channel_number = 2;
2042 radio->core->volume = WL1273_DEFAULT_VOLUME;
2043 radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2044 radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2045 radio->rangelow = WL1273_BAND_OTHER_LOW;
2046 radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2047 radio->stereo = true;
2048 radio->bus_type = "I2C";
2049
2050 if (radio->core->pdata->request_resources) {
2051 r = radio->core->pdata->request_resources(radio->core->client);
2052 if (r) {
2053 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2054 ": Cannot get platform data\n");
2055 goto pdata_err;
2056 }
2057
2058 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2059
2060 r = request_threaded_irq(radio->core->client->irq, NULL,
2061 wl1273_fm_irq_thread_handler,
2062 IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2063 "wl1273-fm", radio);
2064 if (r < 0) {
2065 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2066 ": Unable to register IRQ handler: %d\n", r);
2067 goto err_request_irq;
2068 }
2069 } else {
2070 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
2071 " not configured");
2072 r = -EINVAL;
2073 goto pdata_err;
2074 }
2075
2076 init_completion(&radio->busy);
2077 init_waitqueue_head(&radio->read_queue);
2078
2079 radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2080 if (!radio->write_buf) {
2081 r = -ENOMEM;
2082 goto write_buf_err;
2083 }
2084
2085 radio->dev = &pdev->dev;
2086 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2087 radio->rds_users = 0;
2088
2089 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2090 if (r) {
2091 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2092 goto write_buf_err;
2093 }
2094
2095 /* V4L2 configuration */
2096 radio->videodev = wl1273_viddev_template;
2097
2098 radio->videodev.v4l2_dev = &radio->v4l2dev;
2099
2100 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2101
2102 /* add in ascending ID order */
2103 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2104 V4L2_CID_AUDIO_VOLUME, 0, WL1273_MAX_VOLUME, 1,
2105 WL1273_DEFAULT_VOLUME);
2106
2107 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2108 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2109
2110 v4l2_ctrl_new_std_menu(&radio->ctrl_handler, &wl1273_ctrl_ops,
2111 V4L2_CID_TUNE_PREEMPHASIS,
2112 V4L2_PREEMPHASIS_75_uS, 0x03,
2113 V4L2_PREEMPHASIS_50_uS);
2114
2115 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2116 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2117
2118 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2119 V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2120 0, 255, 1, 255);
2121 if (ctrl)
2122 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2123
2124 if (radio->ctrl_handler.error) {
2125 r = radio->ctrl_handler.error;
2126 dev_err(&pdev->dev, "Ctrl handler error: %d\n", r);
2127 goto handler_init_err;
2128 }
2129
2130 video_set_drvdata(&radio->videodev, radio);
2131 platform_set_drvdata(pdev, radio);
2132
2133 /* register video device */
2134 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2135 if (r) {
2136 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2137 ": Could not register video device\n");
2138 goto handler_init_err;
2139 }
2140
2141 return 0;
2142
2143 handler_init_err:
2144 v4l2_ctrl_handler_free(&radio->ctrl_handler);
2145 v4l2_device_unregister(&radio->v4l2dev);
2146 write_buf_err:
2147 free_irq(radio->core->client->irq, radio);
2148 err_request_irq:
2149 radio->core->pdata->free_resources();
2150 pdata_err:
2151 return r;
2152 }
2153
2154 static struct platform_driver wl1273_fm_radio_driver = {
2155 .probe = wl1273_fm_radio_probe,
2156 .remove = wl1273_fm_radio_remove,
2157 .driver = {
2158 .name = "wl1273_fm_radio",
2159 },
2160 };
2161
2162 module_platform_driver(wl1273_fm_radio_driver);
2163
2164 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2165 MODULE_DESCRIPTION(DRIVER_DESC);
2166 MODULE_LICENSE("GPL");
2167 MODULE_ALIAS("platform:wl1273_fm_radio");
2168