1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Driver for the Texas Instruments WL1273 FM radio.
4 *
5 * Copyright (C) 2011 Nokia Corporation
6 * Author: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
7 */
8
9 #include <linux/delay.h>
10 #include <linux/firmware.h>
11 #include <linux/interrupt.h>
12 #include <linux/mfd/wl1273-core.h>
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <media/v4l2-common.h>
16 #include <media/v4l2-ctrls.h>
17 #include <media/v4l2-device.h>
18 #include <media/v4l2-ioctl.h>
19
20 #define DRIVER_DESC "Wl1273 FM Radio"
21
22 #define WL1273_POWER_SET_OFF 0
23 #define WL1273_POWER_SET_FM BIT(0)
24 #define WL1273_POWER_SET_RDS BIT(1)
25 #define WL1273_POWER_SET_RETENTION BIT(4)
26
27 #define WL1273_PUPD_SET_OFF 0x00
28 #define WL1273_PUPD_SET_ON 0x01
29 #define WL1273_PUPD_SET_RETENTION 0x10
30
31 #define WL1273_FREQ(x) (x * 10000 / 625)
32 #define WL1273_INV_FREQ(x) (x * 625 / 10000)
33
34 /*
35 * static int radio_nr - The number of the radio device
36 *
37 * The default is 0.
38 */
39 static int radio_nr;
40 module_param(radio_nr, int, 0);
41 MODULE_PARM_DESC(radio_nr, "The number of the radio device. Default = 0");
42
43 struct wl1273_device {
44 char *bus_type;
45
46 u8 forbidden;
47 unsigned int preemphasis;
48 unsigned int spacing;
49 unsigned int tx_power;
50 unsigned int rx_frequency;
51 unsigned int tx_frequency;
52 unsigned int rangelow;
53 unsigned int rangehigh;
54 unsigned int band;
55 bool stereo;
56
57 /* RDS */
58 unsigned int rds_on;
59
60 wait_queue_head_t read_queue;
61 struct mutex lock; /* for serializing fm radio operations */
62 struct completion busy;
63
64 unsigned char *buffer;
65 unsigned int buf_size;
66 unsigned int rd_index;
67 unsigned int wr_index;
68
69 /* Selected interrupts */
70 u16 irq_flags;
71 u16 irq_received;
72
73 struct v4l2_ctrl_handler ctrl_handler;
74 struct v4l2_device v4l2dev;
75 struct video_device videodev;
76 struct device *dev;
77 struct wl1273_core *core;
78 struct file *owner;
79 char *write_buf;
80 unsigned int rds_users;
81 };
82
83 #define WL1273_IRQ_MASK (WL1273_FR_EVENT | \
84 WL1273_POW_ENB_EVENT)
85
86 /*
87 * static unsigned int rds_buf - the number of RDS buffer blocks used.
88 *
89 * The default number is 100.
90 */
91 static unsigned int rds_buf = 100;
92 module_param(rds_buf, uint, 0);
93 MODULE_PARM_DESC(rds_buf, "Number of RDS buffer entries. Default = 100");
94
wl1273_fm_write_fw(struct wl1273_core * core,__u8 * fw,int len)95 static int wl1273_fm_write_fw(struct wl1273_core *core,
96 __u8 *fw, int len)
97 {
98 struct i2c_client *client = core->client;
99 struct i2c_msg msg;
100 int i, r = 0;
101
102 msg.addr = client->addr;
103 msg.flags = 0;
104
105 for (i = 0; i <= len; i++) {
106 msg.len = fw[0];
107 msg.buf = fw + 1;
108
109 fw += msg.len + 1;
110 dev_dbg(&client->dev, "%s:len[%d]: %d\n", __func__, i, msg.len);
111
112 r = i2c_transfer(client->adapter, &msg, 1);
113 if (r < 0 && i < len + 1)
114 break;
115 }
116
117 dev_dbg(&client->dev, "%s: i: %d\n", __func__, i);
118 dev_dbg(&client->dev, "%s: len + 1: %d\n", __func__, len + 1);
119
120 /* Last transfer always fails. */
121 if (i == len || r == 1)
122 r = 0;
123
124 return r;
125 }
126
127 #define WL1273_FIFO_HAS_DATA(status) (1 << 5 & status)
128 #define WL1273_RDS_CORRECTABLE_ERROR (1 << 3)
129 #define WL1273_RDS_UNCORRECTABLE_ERROR (1 << 4)
130
wl1273_fm_rds(struct wl1273_device * radio)131 static int wl1273_fm_rds(struct wl1273_device *radio)
132 {
133 struct wl1273_core *core = radio->core;
134 struct i2c_client *client = core->client;
135 u16 val;
136 u8 b0 = WL1273_RDS_DATA_GET, status;
137 struct v4l2_rds_data rds = { 0, 0, 0 };
138 struct i2c_msg msg[] = {
139 {
140 .addr = client->addr,
141 .flags = 0,
142 .buf = &b0,
143 .len = 1,
144 },
145 {
146 .addr = client->addr,
147 .flags = I2C_M_RD,
148 .buf = (u8 *) &rds,
149 .len = sizeof(rds),
150 }
151 };
152 int r;
153
154 if (core->mode != WL1273_MODE_RX)
155 return 0;
156
157 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
158 if (r)
159 return r;
160
161 if ((val & 0x01) == 0) {
162 /* RDS decoder not synchronized */
163 return -EAGAIN;
164 }
165
166 /* copy all four RDS blocks to internal buffer */
167 do {
168 r = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
169 if (r != ARRAY_SIZE(msg)) {
170 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
171 ": %s: read_rds error r == %i)\n",
172 __func__, r);
173 }
174
175 status = rds.block;
176
177 if (!WL1273_FIFO_HAS_DATA(status))
178 break;
179
180 /* copy bits 0-2 (the block ID) to bits 3-5 */
181 rds.block = V4L2_RDS_BLOCK_MSK & status;
182 rds.block |= rds.block << 3;
183
184 /* copy the error bits to standard positions */
185 if (WL1273_RDS_UNCORRECTABLE_ERROR & status) {
186 rds.block |= V4L2_RDS_BLOCK_ERROR;
187 rds.block &= ~V4L2_RDS_BLOCK_CORRECTED;
188 } else if (WL1273_RDS_CORRECTABLE_ERROR & status) {
189 rds.block &= ~V4L2_RDS_BLOCK_ERROR;
190 rds.block |= V4L2_RDS_BLOCK_CORRECTED;
191 }
192
193 /* copy RDS block to internal buffer */
194 memcpy(&radio->buffer[radio->wr_index], &rds, RDS_BLOCK_SIZE);
195 radio->wr_index += 3;
196
197 /* wrap write pointer */
198 if (radio->wr_index >= radio->buf_size)
199 radio->wr_index = 0;
200
201 /* check for overflow & start over */
202 if (radio->wr_index == radio->rd_index) {
203 dev_dbg(radio->dev, "RDS OVERFLOW");
204
205 radio->rd_index = 0;
206 radio->wr_index = 0;
207 break;
208 }
209 } while (WL1273_FIFO_HAS_DATA(status));
210
211 /* wake up read queue */
212 if (radio->wr_index != radio->rd_index)
213 wake_up_interruptible(&radio->read_queue);
214
215 return 0;
216 }
217
wl1273_fm_irq_thread_handler(int irq,void * dev_id)218 static irqreturn_t wl1273_fm_irq_thread_handler(int irq, void *dev_id)
219 {
220 struct wl1273_device *radio = dev_id;
221 struct wl1273_core *core = radio->core;
222 u16 flags;
223 int r;
224
225 r = core->read(core, WL1273_FLAG_GET, &flags);
226 if (r)
227 goto out;
228
229 if (flags & WL1273_BL_EVENT) {
230 radio->irq_received = flags;
231 dev_dbg(radio->dev, "IRQ: BL\n");
232 }
233
234 if (flags & WL1273_RDS_EVENT) {
235 msleep(200);
236
237 wl1273_fm_rds(radio);
238 }
239
240 if (flags & WL1273_BBLK_EVENT)
241 dev_dbg(radio->dev, "IRQ: BBLK\n");
242
243 if (flags & WL1273_LSYNC_EVENT)
244 dev_dbg(radio->dev, "IRQ: LSYNC\n");
245
246 if (flags & WL1273_LEV_EVENT) {
247 u16 level;
248
249 r = core->read(core, WL1273_RSSI_LVL_GET, &level);
250 if (r)
251 goto out;
252
253 if (level > 14)
254 dev_dbg(radio->dev, "IRQ: LEV: 0x%x04\n", level);
255 }
256
257 if (flags & WL1273_IFFR_EVENT)
258 dev_dbg(radio->dev, "IRQ: IFFR\n");
259
260 if (flags & WL1273_PI_EVENT)
261 dev_dbg(radio->dev, "IRQ: PI\n");
262
263 if (flags & WL1273_PD_EVENT)
264 dev_dbg(radio->dev, "IRQ: PD\n");
265
266 if (flags & WL1273_STIC_EVENT)
267 dev_dbg(radio->dev, "IRQ: STIC\n");
268
269 if (flags & WL1273_MAL_EVENT)
270 dev_dbg(radio->dev, "IRQ: MAL\n");
271
272 if (flags & WL1273_POW_ENB_EVENT) {
273 complete(&radio->busy);
274 dev_dbg(radio->dev, "NOT BUSY\n");
275 dev_dbg(radio->dev, "IRQ: POW_ENB\n");
276 }
277
278 if (flags & WL1273_SCAN_OVER_EVENT)
279 dev_dbg(radio->dev, "IRQ: SCAN_OVER\n");
280
281 if (flags & WL1273_ERROR_EVENT)
282 dev_dbg(radio->dev, "IRQ: ERROR\n");
283
284 if (flags & WL1273_FR_EVENT) {
285 u16 freq;
286
287 dev_dbg(radio->dev, "IRQ: FR:\n");
288
289 if (core->mode == WL1273_MODE_RX) {
290 r = core->write(core, WL1273_TUNER_MODE_SET,
291 TUNER_MODE_STOP_SEARCH);
292 if (r) {
293 dev_err(radio->dev,
294 "%s: TUNER_MODE_SET fails: %d\n",
295 __func__, r);
296 goto out;
297 }
298
299 r = core->read(core, WL1273_FREQ_SET, &freq);
300 if (r)
301 goto out;
302
303 if (radio->band == WL1273_BAND_JAPAN)
304 radio->rx_frequency = WL1273_BAND_JAPAN_LOW +
305 freq * 50;
306 else
307 radio->rx_frequency = WL1273_BAND_OTHER_LOW +
308 freq * 50;
309 /*
310 * The driver works better with this msleep,
311 * the documentation doesn't mention it.
312 */
313 usleep_range(10000, 15000);
314
315 dev_dbg(radio->dev, "%dkHz\n", radio->rx_frequency);
316
317 } else {
318 r = core->read(core, WL1273_CHANL_SET, &freq);
319 if (r)
320 goto out;
321
322 dev_dbg(radio->dev, "%dkHz\n", freq);
323 }
324 dev_dbg(radio->dev, "%s: NOT BUSY\n", __func__);
325 }
326
327 out:
328 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
329 complete(&radio->busy);
330
331 return IRQ_HANDLED;
332 }
333
wl1273_fm_set_tx_freq(struct wl1273_device * radio,unsigned int freq)334 static int wl1273_fm_set_tx_freq(struct wl1273_device *radio, unsigned int freq)
335 {
336 struct wl1273_core *core = radio->core;
337 int r = 0;
338 unsigned long t;
339
340 if (freq < WL1273_BAND_TX_LOW) {
341 dev_err(radio->dev,
342 "Frequency out of range: %d < %d\n", freq,
343 WL1273_BAND_TX_LOW);
344 return -ERANGE;
345 }
346
347 if (freq > WL1273_BAND_TX_HIGH) {
348 dev_err(radio->dev,
349 "Frequency out of range: %d > %d\n", freq,
350 WL1273_BAND_TX_HIGH);
351 return -ERANGE;
352 }
353
354 /*
355 * The driver works better with this sleep,
356 * the documentation doesn't mention it.
357 */
358 usleep_range(5000, 10000);
359
360 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
361
362 /* Set the current tx channel */
363 r = core->write(core, WL1273_CHANL_SET, freq / 10);
364 if (r)
365 return r;
366
367 reinit_completion(&radio->busy);
368
369 /* wait for the FR IRQ */
370 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
371 if (!t)
372 return -ETIMEDOUT;
373
374 dev_dbg(radio->dev, "WL1273_CHANL_SET: %lu\n", t);
375
376 /* Enable the output power */
377 r = core->write(core, WL1273_POWER_ENB_SET, 1);
378 if (r)
379 return r;
380
381 reinit_completion(&radio->busy);
382
383 /* wait for the POWER_ENB IRQ */
384 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
385 if (!t)
386 return -ETIMEDOUT;
387
388 radio->tx_frequency = freq;
389 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %lu\n", t);
390
391 return 0;
392 }
393
wl1273_fm_set_rx_freq(struct wl1273_device * radio,unsigned int freq)394 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
395 {
396 struct wl1273_core *core = radio->core;
397 int r, f;
398 unsigned long t;
399
400 if (freq < radio->rangelow) {
401 dev_err(radio->dev,
402 "Frequency out of range: %d < %d\n", freq,
403 radio->rangelow);
404 r = -ERANGE;
405 goto err;
406 }
407
408 if (freq > radio->rangehigh) {
409 dev_err(radio->dev,
410 "Frequency out of range: %d > %d\n", freq,
411 radio->rangehigh);
412 r = -ERANGE;
413 goto err;
414 }
415
416 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
417
418 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
419
420 if (radio->band == WL1273_BAND_JAPAN)
421 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
422 else
423 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
424
425 r = core->write(core, WL1273_FREQ_SET, f);
426 if (r) {
427 dev_err(radio->dev, "FREQ_SET fails\n");
428 goto err;
429 }
430
431 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
432 if (r) {
433 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
434 goto err;
435 }
436
437 reinit_completion(&radio->busy);
438
439 t = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
440 if (!t) {
441 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
442 return -ETIMEDOUT;
443 }
444
445 radio->rd_index = 0;
446 radio->wr_index = 0;
447 radio->rx_frequency = freq;
448 return 0;
449 err:
450 return r;
451 }
452
wl1273_fm_get_freq(struct wl1273_device * radio)453 static int wl1273_fm_get_freq(struct wl1273_device *radio)
454 {
455 struct wl1273_core *core = radio->core;
456 unsigned int freq;
457 u16 f;
458 int r;
459
460 if (core->mode == WL1273_MODE_RX) {
461 r = core->read(core, WL1273_FREQ_SET, &f);
462 if (r)
463 return r;
464
465 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
466 if (radio->band == WL1273_BAND_JAPAN)
467 freq = WL1273_BAND_JAPAN_LOW + 50 * f;
468 else
469 freq = WL1273_BAND_OTHER_LOW + 50 * f;
470 } else {
471 r = core->read(core, WL1273_CHANL_SET, &f);
472 if (r)
473 return r;
474
475 freq = f * 10;
476 }
477
478 return freq;
479 }
480
481 /**
482 * wl1273_fm_upload_firmware_patch() - Upload the firmware.
483 * @radio: A pointer to the device struct.
484 *
485 * The firmware file consists of arrays of bytes where the first byte
486 * gives the array length. The first byte in the file gives the
487 * number of these arrays.
488 */
wl1273_fm_upload_firmware_patch(struct wl1273_device * radio)489 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
490 {
491 struct wl1273_core *core = radio->core;
492 unsigned int packet_num;
493 const struct firmware *fw_p;
494 const char *fw_name = "radio-wl1273-fw.bin";
495 struct device *dev = radio->dev;
496 __u8 *ptr;
497 int r;
498
499 dev_dbg(dev, "%s:\n", __func__);
500
501 /*
502 * Uploading the firmware patch is not always necessary,
503 * so we only print an info message.
504 */
505 if (request_firmware(&fw_p, fw_name, dev)) {
506 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
507
508 return 0;
509 }
510
511 ptr = (__u8 *) fw_p->data;
512 packet_num = ptr[0];
513 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
514
515 r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
516 if (r) {
517 dev_err(dev, "FW upload error: %d\n", r);
518 goto out;
519 }
520
521 /* ignore possible error here */
522 core->write(core, WL1273_RESET, 0);
523
524 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
525 out:
526 release_firmware(fw_p);
527 return r;
528 }
529
wl1273_fm_stop(struct wl1273_device * radio)530 static int wl1273_fm_stop(struct wl1273_device *radio)
531 {
532 struct wl1273_core *core = radio->core;
533
534 if (core->mode == WL1273_MODE_RX) {
535 int r = core->write(core, WL1273_POWER_SET,
536 WL1273_POWER_SET_OFF);
537 if (r)
538 dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
539 __func__, r);
540 } else if (core->mode == WL1273_MODE_TX) {
541 int r = core->write(core, WL1273_PUPD_SET,
542 WL1273_PUPD_SET_OFF);
543 if (r)
544 dev_err(radio->dev,
545 "%s: PUPD_SET fails: %d\n", __func__, r);
546 }
547
548 if (core->pdata->disable) {
549 core->pdata->disable();
550 dev_dbg(radio->dev, "Back to reset\n");
551 }
552
553 return 0;
554 }
555
wl1273_fm_start(struct wl1273_device * radio,int new_mode)556 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
557 {
558 struct wl1273_core *core = radio->core;
559 struct wl1273_fm_platform_data *pdata = core->pdata;
560 struct device *dev = radio->dev;
561 int r = -EINVAL;
562
563 if (pdata->enable && core->mode == WL1273_MODE_OFF) {
564 dev_dbg(radio->dev, "Out of reset\n");
565
566 pdata->enable();
567 msleep(250);
568 }
569
570 if (new_mode == WL1273_MODE_RX) {
571 u16 val = WL1273_POWER_SET_FM;
572
573 if (radio->rds_on)
574 val |= WL1273_POWER_SET_RDS;
575
576 /* If this fails try again */
577 r = core->write(core, WL1273_POWER_SET, val);
578 if (r) {
579 msleep(100);
580
581 r = core->write(core, WL1273_POWER_SET, val);
582 if (r) {
583 dev_err(dev, "%s: POWER_SET fails\n", __func__);
584 goto fail;
585 }
586 }
587
588 /* rds buffer configuration */
589 radio->wr_index = 0;
590 radio->rd_index = 0;
591
592 } else if (new_mode == WL1273_MODE_TX) {
593 /* If this fails try again once */
594 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
595 if (r) {
596 msleep(100);
597 r = core->write(core, WL1273_PUPD_SET,
598 WL1273_PUPD_SET_ON);
599 if (r) {
600 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
601 goto fail;
602 }
603 }
604
605 if (radio->rds_on) {
606 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
607 if (r) {
608 dev_err(dev, "%s: RDS_DATA_ENB ON fails\n",
609 __func__);
610 goto fail;
611 }
612 } else {
613 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
614 if (r) {
615 dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n",
616 __func__);
617 goto fail;
618 }
619 }
620 } else {
621 dev_warn(dev, "%s: Illegal mode.\n", __func__);
622 }
623
624 if (core->mode == WL1273_MODE_OFF) {
625 r = wl1273_fm_upload_firmware_patch(radio);
626 if (r)
627 dev_warn(dev, "Firmware upload failed.\n");
628
629 /*
630 * Sometimes the chip is in a wrong power state at this point.
631 * So we set the power once again.
632 */
633 if (new_mode == WL1273_MODE_RX) {
634 u16 val = WL1273_POWER_SET_FM;
635
636 if (radio->rds_on)
637 val |= WL1273_POWER_SET_RDS;
638
639 r = core->write(core, WL1273_POWER_SET, val);
640 if (r) {
641 dev_err(dev, "%s: POWER_SET fails\n", __func__);
642 goto fail;
643 }
644 } else if (new_mode == WL1273_MODE_TX) {
645 r = core->write(core, WL1273_PUPD_SET,
646 WL1273_PUPD_SET_ON);
647 if (r) {
648 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
649 goto fail;
650 }
651 }
652 }
653
654 return 0;
655 fail:
656 if (pdata->disable)
657 pdata->disable();
658
659 dev_dbg(dev, "%s: return: %d\n", __func__, r);
660 return r;
661 }
662
wl1273_fm_suspend(struct wl1273_device * radio)663 static int wl1273_fm_suspend(struct wl1273_device *radio)
664 {
665 struct wl1273_core *core = radio->core;
666 int r;
667
668 /* Cannot go from OFF to SUSPENDED */
669 if (core->mode == WL1273_MODE_RX)
670 r = core->write(core, WL1273_POWER_SET,
671 WL1273_POWER_SET_RETENTION);
672 else if (core->mode == WL1273_MODE_TX)
673 r = core->write(core, WL1273_PUPD_SET,
674 WL1273_PUPD_SET_RETENTION);
675 else
676 r = -EINVAL;
677
678 if (r) {
679 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
680 goto out;
681 }
682
683 out:
684 return r;
685 }
686
wl1273_fm_set_mode(struct wl1273_device * radio,int mode)687 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
688 {
689 struct wl1273_core *core = radio->core;
690 struct device *dev = radio->dev;
691 int old_mode;
692 int r;
693
694 dev_dbg(dev, "%s\n", __func__);
695 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
696
697 old_mode = core->mode;
698 if (mode & radio->forbidden) {
699 r = -EPERM;
700 goto out;
701 }
702
703 switch (mode) {
704 case WL1273_MODE_RX:
705 case WL1273_MODE_TX:
706 r = wl1273_fm_start(radio, mode);
707 if (r) {
708 dev_err(dev, "%s: Cannot start.\n", __func__);
709 wl1273_fm_stop(radio);
710 goto out;
711 }
712
713 core->mode = mode;
714 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
715 if (r) {
716 dev_err(dev, "INT_MASK_SET fails.\n");
717 goto out;
718 }
719
720 /* remember previous settings */
721 if (mode == WL1273_MODE_RX) {
722 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
723 if (r) {
724 dev_err(dev, "set freq fails: %d.\n", r);
725 goto out;
726 }
727
728 r = core->set_volume(core, core->volume);
729 if (r) {
730 dev_err(dev, "set volume fails: %d.\n", r);
731 goto out;
732 }
733
734 dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
735 core->volume);
736 } else {
737 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
738 if (r) {
739 dev_err(dev, "set freq fails: %d.\n", r);
740 goto out;
741 }
742 }
743
744 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
745
746 r = core->set_audio(core, core->audio_mode);
747 if (r)
748 dev_err(dev, "Cannot set audio mode.\n");
749 break;
750
751 case WL1273_MODE_OFF:
752 r = wl1273_fm_stop(radio);
753 if (r)
754 dev_err(dev, "%s: Off fails: %d\n", __func__, r);
755 else
756 core->mode = WL1273_MODE_OFF;
757
758 break;
759
760 case WL1273_MODE_SUSPENDED:
761 r = wl1273_fm_suspend(radio);
762 if (r)
763 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
764 else
765 core->mode = WL1273_MODE_SUSPENDED;
766
767 break;
768
769 default:
770 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
771 r = -EINVAL;
772 break;
773 }
774 out:
775 if (r)
776 core->mode = old_mode;
777
778 return r;
779 }
780
wl1273_fm_set_seek(struct wl1273_device * radio,unsigned int wrap_around,unsigned int seek_upward,int level)781 static int wl1273_fm_set_seek(struct wl1273_device *radio,
782 unsigned int wrap_around,
783 unsigned int seek_upward,
784 int level)
785 {
786 struct wl1273_core *core = radio->core;
787 int r = 0;
788 unsigned int dir = (seek_upward == 0) ? 0 : 1;
789 unsigned int f;
790
791 f = radio->rx_frequency;
792 dev_dbg(radio->dev, "rx_frequency: %d\n", f);
793
794 if (dir && f + radio->spacing <= radio->rangehigh)
795 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
796 else if (dir && wrap_around)
797 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
798 else if (f - radio->spacing >= radio->rangelow)
799 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
800 else if (wrap_around)
801 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
802
803 if (r)
804 goto out;
805
806 if (level < SCHAR_MIN || level > SCHAR_MAX)
807 return -EINVAL;
808
809 reinit_completion(&radio->busy);
810 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
811
812 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
813 if (r)
814 goto out;
815
816 dev_dbg(radio->dev, "%s\n", __func__);
817
818 r = core->write(core, WL1273_SEARCH_LVL_SET, level);
819 if (r)
820 goto out;
821
822 r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
823 if (r)
824 goto out;
825
826 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
827 if (r)
828 goto out;
829
830 /* wait for the FR IRQ */
831 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
832 if (!(radio->irq_received & WL1273_BL_EVENT)) {
833 r = -ETIMEDOUT;
834 goto out;
835 }
836
837 radio->irq_received &= ~WL1273_BL_EVENT;
838
839 if (!wrap_around)
840 goto out;
841
842 /* Wrap around */
843 dev_dbg(radio->dev, "Wrap around in HW seek.\n");
844
845 if (seek_upward)
846 f = radio->rangelow;
847 else
848 f = radio->rangehigh;
849
850 r = wl1273_fm_set_rx_freq(radio, f);
851 if (r)
852 goto out;
853
854 reinit_completion(&radio->busy);
855 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
856
857 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
858 if (r)
859 goto out;
860
861 /* wait for the FR IRQ */
862 if (!wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000)))
863 r = -ETIMEDOUT;
864 out:
865 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
866 return r;
867 }
868
869 /**
870 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.
871 * @radio: A pointer to the device struct.
872 */
wl1273_fm_get_tx_ctune(struct wl1273_device * radio)873 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
874 {
875 struct wl1273_core *core = radio->core;
876 struct device *dev = radio->dev;
877 u16 val;
878 int r;
879
880 if (core->mode == WL1273_MODE_OFF ||
881 core->mode == WL1273_MODE_SUSPENDED)
882 return -EPERM;
883
884 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
885 if (r) {
886 dev_err(dev, "%s: read error: %d\n", __func__, r);
887 goto out;
888 }
889
890 out:
891 return val;
892 }
893
894 /**
895 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
896 * @radio: A pointer to the device struct.
897 * @preemphasis: The new pre-amphasis value.
898 *
899 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
900 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
901 */
wl1273_fm_set_preemphasis(struct wl1273_device * radio,unsigned int preemphasis)902 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
903 unsigned int preemphasis)
904 {
905 struct wl1273_core *core = radio->core;
906 int r;
907 u16 em;
908
909 if (core->mode == WL1273_MODE_OFF ||
910 core->mode == WL1273_MODE_SUSPENDED)
911 return -EPERM;
912
913 mutex_lock(&core->lock);
914
915 switch (preemphasis) {
916 case V4L2_PREEMPHASIS_DISABLED:
917 em = 1;
918 break;
919 case V4L2_PREEMPHASIS_50_uS:
920 em = 0;
921 break;
922 case V4L2_PREEMPHASIS_75_uS:
923 em = 2;
924 break;
925 default:
926 r = -EINVAL;
927 goto out;
928 }
929
930 r = core->write(core, WL1273_PREMPH_SET, em);
931 if (r)
932 goto out;
933
934 radio->preemphasis = preemphasis;
935
936 out:
937 mutex_unlock(&core->lock);
938 return r;
939 }
940
wl1273_fm_rds_on(struct wl1273_device * radio)941 static int wl1273_fm_rds_on(struct wl1273_device *radio)
942 {
943 struct wl1273_core *core = radio->core;
944 int r;
945
946 dev_dbg(radio->dev, "%s\n", __func__);
947 if (radio->rds_on)
948 return 0;
949
950 r = core->write(core, WL1273_POWER_SET,
951 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
952 if (r)
953 goto out;
954
955 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
956 if (r)
957 dev_err(radio->dev, "set freq fails: %d.\n", r);
958 out:
959 return r;
960 }
961
wl1273_fm_rds_off(struct wl1273_device * radio)962 static int wl1273_fm_rds_off(struct wl1273_device *radio)
963 {
964 struct wl1273_core *core = radio->core;
965 int r;
966
967 if (!radio->rds_on)
968 return 0;
969
970 radio->irq_flags &= ~WL1273_RDS_EVENT;
971
972 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
973 if (r)
974 goto out;
975
976 /* Service pending read */
977 wake_up_interruptible(&radio->read_queue);
978
979 dev_dbg(radio->dev, "%s\n", __func__);
980
981 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
982 if (r)
983 goto out;
984
985 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
986 if (r)
987 dev_err(radio->dev, "set freq fails: %d.\n", r);
988 out:
989 dev_dbg(radio->dev, "%s: exiting...\n", __func__);
990
991 return r;
992 }
993
wl1273_fm_set_rds(struct wl1273_device * radio,unsigned int new_mode)994 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
995 {
996 int r = 0;
997 struct wl1273_core *core = radio->core;
998
999 if (core->mode == WL1273_MODE_OFF ||
1000 core->mode == WL1273_MODE_SUSPENDED)
1001 return -EPERM;
1002
1003 if (new_mode == WL1273_RDS_RESET) {
1004 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
1005 return r;
1006 }
1007
1008 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1009 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1010 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1011 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1012 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1013 r = wl1273_fm_rds_off(radio);
1014 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1015 r = wl1273_fm_rds_on(radio);
1016 } else {
1017 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1018 __func__, new_mode);
1019 r = -EINVAL;
1020 }
1021
1022 if (!r)
1023 radio->rds_on = new_mode == WL1273_RDS_ON;
1024
1025 return r;
1026 }
1027
wl1273_fm_fops_write(struct file * file,const char __user * buf,size_t count,loff_t * ppos)1028 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1029 size_t count, loff_t *ppos)
1030 {
1031 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1032 struct wl1273_core *core = radio->core;
1033 u16 val;
1034 int r;
1035
1036 dev_dbg(radio->dev, "%s\n", __func__);
1037
1038 if (core->mode != WL1273_MODE_TX)
1039 return count;
1040
1041 if (radio->rds_users == 0) {
1042 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1043 return 0;
1044 }
1045
1046 if (mutex_lock_interruptible(&core->lock))
1047 return -EINTR;
1048 /*
1049 * Multiple processes can open the device, but only
1050 * one gets to write to it.
1051 */
1052 if (radio->owner && radio->owner != file) {
1053 r = -EBUSY;
1054 goto out;
1055 }
1056 radio->owner = file;
1057
1058 /* Manual Mode */
1059 if (count > 255)
1060 val = 255;
1061 else
1062 val = count;
1063
1064 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1065
1066 if (copy_from_user(radio->write_buf + 1, buf, val)) {
1067 r = -EFAULT;
1068 goto out;
1069 }
1070
1071 dev_dbg(radio->dev, "Count: %d\n", val);
1072 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1073
1074 radio->write_buf[0] = WL1273_RDS_DATA_SET;
1075 core->write_data(core, radio->write_buf, val + 1);
1076
1077 r = val;
1078 out:
1079 mutex_unlock(&core->lock);
1080
1081 return r;
1082 }
1083
wl1273_fm_fops_poll(struct file * file,struct poll_table_struct * pts)1084 static __poll_t wl1273_fm_fops_poll(struct file *file,
1085 struct poll_table_struct *pts)
1086 {
1087 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1088 struct wl1273_core *core = radio->core;
1089
1090 if (radio->owner && radio->owner != file)
1091 return EPOLLERR;
1092
1093 radio->owner = file;
1094
1095 if (core->mode == WL1273_MODE_RX) {
1096 poll_wait(file, &radio->read_queue, pts);
1097
1098 if (radio->rd_index != radio->wr_index)
1099 return EPOLLIN | EPOLLRDNORM;
1100
1101 } else if (core->mode == WL1273_MODE_TX) {
1102 return EPOLLOUT | EPOLLWRNORM;
1103 }
1104
1105 return 0;
1106 }
1107
wl1273_fm_fops_open(struct file * file)1108 static int wl1273_fm_fops_open(struct file *file)
1109 {
1110 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1111 struct wl1273_core *core = radio->core;
1112 int r = 0;
1113
1114 dev_dbg(radio->dev, "%s\n", __func__);
1115
1116 if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1117 !radio->rds_users) {
1118 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1119
1120 if (mutex_lock_interruptible(&core->lock))
1121 return -EINTR;
1122
1123 radio->irq_flags |= WL1273_RDS_EVENT;
1124
1125 r = core->write(core, WL1273_INT_MASK_SET,
1126 radio->irq_flags);
1127 if (r) {
1128 mutex_unlock(&core->lock);
1129 goto out;
1130 }
1131
1132 radio->rds_users++;
1133
1134 mutex_unlock(&core->lock);
1135 }
1136 out:
1137 return r;
1138 }
1139
wl1273_fm_fops_release(struct file * file)1140 static int wl1273_fm_fops_release(struct file *file)
1141 {
1142 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1143 struct wl1273_core *core = radio->core;
1144 int r = 0;
1145
1146 dev_dbg(radio->dev, "%s\n", __func__);
1147
1148 if (radio->rds_users > 0) {
1149 radio->rds_users--;
1150 if (radio->rds_users == 0) {
1151 mutex_lock(&core->lock);
1152
1153 radio->irq_flags &= ~WL1273_RDS_EVENT;
1154
1155 if (core->mode == WL1273_MODE_RX) {
1156 r = core->write(core,
1157 WL1273_INT_MASK_SET,
1158 radio->irq_flags);
1159 if (r) {
1160 mutex_unlock(&core->lock);
1161 goto out;
1162 }
1163 }
1164 mutex_unlock(&core->lock);
1165 }
1166 }
1167
1168 if (file == radio->owner)
1169 radio->owner = NULL;
1170 out:
1171 return r;
1172 }
1173
wl1273_fm_fops_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)1174 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1175 size_t count, loff_t *ppos)
1176 {
1177 int r = 0;
1178 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1179 struct wl1273_core *core = radio->core;
1180 unsigned int block_count = 0;
1181 u16 val;
1182
1183 dev_dbg(radio->dev, "%s\n", __func__);
1184
1185 if (core->mode != WL1273_MODE_RX)
1186 return 0;
1187
1188 if (radio->rds_users == 0) {
1189 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1190 return 0;
1191 }
1192
1193 if (mutex_lock_interruptible(&core->lock))
1194 return -EINTR;
1195
1196 /*
1197 * Multiple processes can open the device, but only
1198 * one at a time gets read access.
1199 */
1200 if (radio->owner && radio->owner != file) {
1201 r = -EBUSY;
1202 goto out;
1203 }
1204 radio->owner = file;
1205
1206 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1207 if (r) {
1208 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1209 goto out;
1210 } else if (val == 0) {
1211 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1212 r = -ENODATA;
1213 goto out;
1214 }
1215
1216 /* block if no new data available */
1217 while (radio->wr_index == radio->rd_index) {
1218 if (file->f_flags & O_NONBLOCK) {
1219 r = -EWOULDBLOCK;
1220 goto out;
1221 }
1222
1223 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1224 if (wait_event_interruptible(radio->read_queue,
1225 radio->wr_index !=
1226 radio->rd_index) < 0) {
1227 r = -EINTR;
1228 goto out;
1229 }
1230 }
1231
1232 /* calculate block count from byte count */
1233 count /= RDS_BLOCK_SIZE;
1234
1235 /* copy RDS blocks from the internal buffer and to user buffer */
1236 while (block_count < count) {
1237 if (radio->rd_index == radio->wr_index)
1238 break;
1239
1240 /* always transfer complete RDS blocks */
1241 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1242 RDS_BLOCK_SIZE))
1243 break;
1244
1245 /* increment and wrap the read pointer */
1246 radio->rd_index += RDS_BLOCK_SIZE;
1247 if (radio->rd_index >= radio->buf_size)
1248 radio->rd_index = 0;
1249
1250 /* increment counters */
1251 block_count++;
1252 buf += RDS_BLOCK_SIZE;
1253 r += RDS_BLOCK_SIZE;
1254 }
1255
1256 out:
1257 dev_dbg(radio->dev, "%s: exit\n", __func__);
1258 mutex_unlock(&core->lock);
1259
1260 return r;
1261 }
1262
1263 static const struct v4l2_file_operations wl1273_fops = {
1264 .owner = THIS_MODULE,
1265 .read = wl1273_fm_fops_read,
1266 .write = wl1273_fm_fops_write,
1267 .poll = wl1273_fm_fops_poll,
1268 .unlocked_ioctl = video_ioctl2,
1269 .open = wl1273_fm_fops_open,
1270 .release = wl1273_fm_fops_release,
1271 };
1272
wl1273_fm_vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * capability)1273 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1274 struct v4l2_capability *capability)
1275 {
1276 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1277
1278 dev_dbg(radio->dev, "%s\n", __func__);
1279
1280 strscpy(capability->driver, WL1273_FM_DRIVER_NAME,
1281 sizeof(capability->driver));
1282 strscpy(capability->card, "TI Wl1273 FM Radio",
1283 sizeof(capability->card));
1284 strscpy(capability->bus_info, radio->bus_type,
1285 sizeof(capability->bus_info));
1286 return 0;
1287 }
1288
wl1273_fm_vidioc_g_input(struct file * file,void * priv,unsigned int * i)1289 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1290 unsigned int *i)
1291 {
1292 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1293
1294 dev_dbg(radio->dev, "%s\n", __func__);
1295
1296 *i = 0;
1297
1298 return 0;
1299 }
1300
wl1273_fm_vidioc_s_input(struct file * file,void * priv,unsigned int i)1301 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1302 unsigned int i)
1303 {
1304 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1305
1306 dev_dbg(radio->dev, "%s\n", __func__);
1307
1308 if (i != 0)
1309 return -EINVAL;
1310
1311 return 0;
1312 }
1313
1314 /**
1315 * wl1273_fm_set_tx_power() - Set the transmission power value.
1316 * @radio: A pointer to the device struct.
1317 * @power: The new power value.
1318 */
wl1273_fm_set_tx_power(struct wl1273_device * radio,u16 power)1319 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1320 {
1321 struct wl1273_core *core = radio->core;
1322 int r;
1323
1324 if (core->mode == WL1273_MODE_OFF ||
1325 core->mode == WL1273_MODE_SUSPENDED)
1326 return -EPERM;
1327
1328 mutex_lock(&core->lock);
1329
1330 /* Convert the dBuV value to chip presentation */
1331 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1332 if (r)
1333 goto out;
1334
1335 radio->tx_power = power;
1336
1337 out:
1338 mutex_unlock(&core->lock);
1339 return r;
1340 }
1341
1342 #define WL1273_SPACING_50kHz 1
1343 #define WL1273_SPACING_100kHz 2
1344 #define WL1273_SPACING_200kHz 4
1345
wl1273_fm_tx_set_spacing(struct wl1273_device * radio,unsigned int spacing)1346 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1347 unsigned int spacing)
1348 {
1349 struct wl1273_core *core = radio->core;
1350 int r;
1351
1352 if (spacing == 0) {
1353 r = core->write(core, WL1273_SCAN_SPACING_SET,
1354 WL1273_SPACING_100kHz);
1355 radio->spacing = 100;
1356 } else if (spacing - 50000 < 25000) {
1357 r = core->write(core, WL1273_SCAN_SPACING_SET,
1358 WL1273_SPACING_50kHz);
1359 radio->spacing = 50;
1360 } else if (spacing - 100000 < 50000) {
1361 r = core->write(core, WL1273_SCAN_SPACING_SET,
1362 WL1273_SPACING_100kHz);
1363 radio->spacing = 100;
1364 } else {
1365 r = core->write(core, WL1273_SCAN_SPACING_SET,
1366 WL1273_SPACING_200kHz);
1367 radio->spacing = 200;
1368 }
1369
1370 return r;
1371 }
1372
wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl * ctrl)1373 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1374 {
1375 struct wl1273_device *radio = ctrl->priv;
1376 struct wl1273_core *core = radio->core;
1377
1378 dev_dbg(radio->dev, "%s\n", __func__);
1379
1380 if (mutex_lock_interruptible(&core->lock))
1381 return -EINTR;
1382
1383 switch (ctrl->id) {
1384 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1385 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1386 break;
1387
1388 default:
1389 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1390 __func__, ctrl->id);
1391 break;
1392 }
1393
1394 mutex_unlock(&core->lock);
1395
1396 return 0;
1397 }
1398
1399 #define WL1273_MUTE_SOFT_ENABLE (1 << 0)
1400 #define WL1273_MUTE_AC (1 << 1)
1401 #define WL1273_MUTE_HARD_LEFT (1 << 2)
1402 #define WL1273_MUTE_HARD_RIGHT (1 << 3)
1403 #define WL1273_MUTE_SOFT_FORCE (1 << 4)
1404
to_radio(struct v4l2_ctrl * ctrl)1405 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1406 {
1407 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1408 }
1409
wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl * ctrl)1410 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1411 {
1412 struct wl1273_device *radio = to_radio(ctrl);
1413 struct wl1273_core *core = radio->core;
1414 int r = 0;
1415
1416 dev_dbg(radio->dev, "%s\n", __func__);
1417
1418 switch (ctrl->id) {
1419 case V4L2_CID_AUDIO_MUTE:
1420 if (mutex_lock_interruptible(&core->lock))
1421 return -EINTR;
1422
1423 if (core->mode == WL1273_MODE_RX && ctrl->val)
1424 r = core->write(core,
1425 WL1273_MUTE_STATUS_SET,
1426 WL1273_MUTE_HARD_LEFT |
1427 WL1273_MUTE_HARD_RIGHT);
1428 else if (core->mode == WL1273_MODE_RX)
1429 r = core->write(core,
1430 WL1273_MUTE_STATUS_SET, 0x0);
1431 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1432 r = core->write(core, WL1273_MUTE, 1);
1433 else if (core->mode == WL1273_MODE_TX)
1434 r = core->write(core, WL1273_MUTE, 0);
1435
1436 mutex_unlock(&core->lock);
1437 break;
1438
1439 case V4L2_CID_AUDIO_VOLUME:
1440 if (ctrl->val == 0)
1441 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1442 else
1443 r = core->set_volume(core, core->volume);
1444 break;
1445
1446 case V4L2_CID_TUNE_PREEMPHASIS:
1447 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1448 break;
1449
1450 case V4L2_CID_TUNE_POWER_LEVEL:
1451 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1452 break;
1453
1454 default:
1455 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1456 __func__, ctrl->id);
1457 break;
1458 }
1459
1460 dev_dbg(radio->dev, "%s\n", __func__);
1461 return r;
1462 }
1463
wl1273_fm_vidioc_g_audio(struct file * file,void * priv,struct v4l2_audio * audio)1464 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1465 struct v4l2_audio *audio)
1466 {
1467 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1468
1469 dev_dbg(radio->dev, "%s\n", __func__);
1470
1471 if (audio->index > 1)
1472 return -EINVAL;
1473
1474 strscpy(audio->name, "Radio", sizeof(audio->name));
1475 audio->capability = V4L2_AUDCAP_STEREO;
1476
1477 return 0;
1478 }
1479
wl1273_fm_vidioc_s_audio(struct file * file,void * priv,const struct v4l2_audio * audio)1480 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1481 const struct v4l2_audio *audio)
1482 {
1483 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1484
1485 dev_dbg(radio->dev, "%s\n", __func__);
1486
1487 if (audio->index != 0)
1488 return -EINVAL;
1489
1490 return 0;
1491 }
1492
1493 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1494 #define WL1273_RDS_SYNCHRONIZED 1
1495
wl1273_fm_vidioc_g_tuner(struct file * file,void * priv,struct v4l2_tuner * tuner)1496 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1497 struct v4l2_tuner *tuner)
1498 {
1499 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1500 struct wl1273_core *core = radio->core;
1501 u16 val;
1502 int r;
1503
1504 dev_dbg(radio->dev, "%s\n", __func__);
1505
1506 if (tuner->index > 0)
1507 return -EINVAL;
1508
1509 strscpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1510 tuner->type = V4L2_TUNER_RADIO;
1511
1512 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1513 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1514
1515 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1516 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1517 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1518
1519 if (radio->stereo)
1520 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1521 else
1522 tuner->audmode = V4L2_TUNER_MODE_MONO;
1523
1524 if (core->mode != WL1273_MODE_RX)
1525 return 0;
1526
1527 if (mutex_lock_interruptible(&core->lock))
1528 return -EINTR;
1529
1530 r = core->read(core, WL1273_STEREO_GET, &val);
1531 if (r)
1532 goto out;
1533
1534 if (val == 1)
1535 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1536 else
1537 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1538
1539 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1540 if (r)
1541 goto out;
1542
1543 tuner->signal = (s16) val;
1544 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1545
1546 tuner->afc = 0;
1547
1548 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1549 if (r)
1550 goto out;
1551
1552 if (val == WL1273_RDS_SYNCHRONIZED)
1553 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1554 out:
1555 mutex_unlock(&core->lock);
1556
1557 return r;
1558 }
1559
wl1273_fm_vidioc_s_tuner(struct file * file,void * priv,const struct v4l2_tuner * tuner)1560 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1561 const struct v4l2_tuner *tuner)
1562 {
1563 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1564 struct wl1273_core *core = radio->core;
1565 int r = 0;
1566
1567 dev_dbg(radio->dev, "%s\n", __func__);
1568 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1569 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1570 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1571 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1572 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1573 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1574
1575 if (tuner->index > 0)
1576 return -EINVAL;
1577
1578 if (mutex_lock_interruptible(&core->lock))
1579 return -EINTR;
1580
1581 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1582 if (r)
1583 goto out;
1584
1585 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1586 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1587 else
1588 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1589
1590 if (r)
1591 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1592
1593 if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1594 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1595 if (r < 0) {
1596 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1597 __func__, r);
1598 goto out;
1599 }
1600 radio->stereo = false;
1601 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1602 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
1603 if (r < 0) {
1604 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1605 __func__, r);
1606 goto out;
1607 }
1608 radio->stereo = true;
1609 } else {
1610 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1611 __func__, tuner->audmode);
1612 r = -EINVAL;
1613 goto out;
1614 }
1615
1616 out:
1617 mutex_unlock(&core->lock);
1618
1619 return r;
1620 }
1621
wl1273_fm_vidioc_g_frequency(struct file * file,void * priv,struct v4l2_frequency * freq)1622 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1623 struct v4l2_frequency *freq)
1624 {
1625 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1626 struct wl1273_core *core = radio->core;
1627
1628 dev_dbg(radio->dev, "%s\n", __func__);
1629
1630 if (mutex_lock_interruptible(&core->lock))
1631 return -EINTR;
1632
1633 freq->type = V4L2_TUNER_RADIO;
1634 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1635
1636 mutex_unlock(&core->lock);
1637
1638 return 0;
1639 }
1640
wl1273_fm_vidioc_s_frequency(struct file * file,void * priv,const struct v4l2_frequency * freq)1641 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1642 const struct v4l2_frequency *freq)
1643 {
1644 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1645 struct wl1273_core *core = radio->core;
1646 int r;
1647
1648 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1649
1650 if (freq->type != V4L2_TUNER_RADIO) {
1651 dev_dbg(radio->dev,
1652 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1653 return -EINVAL;
1654 }
1655
1656 if (mutex_lock_interruptible(&core->lock))
1657 return -EINTR;
1658
1659 if (core->mode == WL1273_MODE_RX) {
1660 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1661
1662 r = wl1273_fm_set_rx_freq(radio,
1663 WL1273_INV_FREQ(freq->frequency));
1664 if (r)
1665 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1666 ": set frequency failed with %d\n", r);
1667 } else {
1668 r = wl1273_fm_set_tx_freq(radio,
1669 WL1273_INV_FREQ(freq->frequency));
1670 if (r)
1671 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1672 ": set frequency failed with %d\n", r);
1673 }
1674
1675 mutex_unlock(&core->lock);
1676
1677 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1678 return r;
1679 }
1680
1681 #define WL1273_DEFAULT_SEEK_LEVEL 7
1682
wl1273_fm_vidioc_s_hw_freq_seek(struct file * file,void * priv,const struct v4l2_hw_freq_seek * seek)1683 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1684 const struct v4l2_hw_freq_seek *seek)
1685 {
1686 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1687 struct wl1273_core *core = radio->core;
1688 int r;
1689
1690 dev_dbg(radio->dev, "%s\n", __func__);
1691
1692 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1693 return -EINVAL;
1694
1695 if (file->f_flags & O_NONBLOCK)
1696 return -EWOULDBLOCK;
1697
1698 if (mutex_lock_interruptible(&core->lock))
1699 return -EINTR;
1700
1701 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1702 if (r)
1703 goto out;
1704
1705 r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1706 if (r)
1707 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1708
1709 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1710 WL1273_DEFAULT_SEEK_LEVEL);
1711 if (r)
1712 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1713
1714 out:
1715 mutex_unlock(&core->lock);
1716 return r;
1717 }
1718
wl1273_fm_vidioc_s_modulator(struct file * file,void * priv,const struct v4l2_modulator * modulator)1719 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1720 const struct v4l2_modulator *modulator)
1721 {
1722 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1723 struct wl1273_core *core = radio->core;
1724 int r = 0;
1725
1726 dev_dbg(radio->dev, "%s\n", __func__);
1727
1728 if (modulator->index > 0)
1729 return -EINVAL;
1730
1731 if (mutex_lock_interruptible(&core->lock))
1732 return -EINTR;
1733
1734 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1735 if (r)
1736 goto out;
1737
1738 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1739 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1740 else
1741 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1742
1743 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1744 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1745 else
1746 r = core->write(core, WL1273_MONO_SET,
1747 WL1273_RX_STEREO);
1748 if (r < 0)
1749 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1750 "MONO_SET fails: %d\n", r);
1751 out:
1752 mutex_unlock(&core->lock);
1753
1754 return r;
1755 }
1756
wl1273_fm_vidioc_g_modulator(struct file * file,void * priv,struct v4l2_modulator * modulator)1757 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1758 struct v4l2_modulator *modulator)
1759 {
1760 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1761 struct wl1273_core *core = radio->core;
1762 u16 val;
1763 int r;
1764
1765 dev_dbg(radio->dev, "%s\n", __func__);
1766
1767 strscpy(modulator->name, WL1273_FM_DRIVER_NAME,
1768 sizeof(modulator->name));
1769
1770 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1771 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1772
1773 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1774 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1775
1776 if (core->mode != WL1273_MODE_TX)
1777 return 0;
1778
1779 if (mutex_lock_interruptible(&core->lock))
1780 return -EINTR;
1781
1782 r = core->read(core, WL1273_MONO_SET, &val);
1783 if (r)
1784 goto out;
1785
1786 if (val == WL1273_TX_STEREO)
1787 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1788 else
1789 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1790
1791 if (radio->rds_on)
1792 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1793 out:
1794 mutex_unlock(&core->lock);
1795
1796 return 0;
1797 }
1798
wl1273_fm_vidioc_log_status(struct file * file,void * priv)1799 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1800 {
1801 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1802 struct wl1273_core *core = radio->core;
1803 struct device *dev = radio->dev;
1804 u16 val;
1805 int r;
1806
1807 dev_info(dev, DRIVER_DESC);
1808
1809 if (core->mode == WL1273_MODE_OFF) {
1810 dev_info(dev, "Mode: Off\n");
1811 return 0;
1812 }
1813
1814 if (core->mode == WL1273_MODE_SUSPENDED) {
1815 dev_info(dev, "Mode: Suspended\n");
1816 return 0;
1817 }
1818
1819 r = core->read(core, WL1273_ASIC_ID_GET, &val);
1820 if (r)
1821 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1822 else
1823 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1824
1825 r = core->read(core, WL1273_ASIC_VER_GET, &val);
1826 if (r)
1827 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1828 else
1829 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1830
1831 r = core->read(core, WL1273_FIRM_VER_GET, &val);
1832 if (r)
1833 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1834 else
1835 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1836
1837 r = core->read(core, WL1273_BAND_SET, &val);
1838 if (r)
1839 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1840 else
1841 dev_info(dev, "BAND: %d\n", val);
1842
1843 if (core->mode == WL1273_MODE_TX) {
1844 r = core->read(core, WL1273_PUPD_SET, &val);
1845 if (r)
1846 dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1847 else
1848 dev_info(dev, "PUPD: 0x%04x\n", val);
1849
1850 r = core->read(core, WL1273_CHANL_SET, &val);
1851 if (r)
1852 dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1853 else
1854 dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1855 } else if (core->mode == WL1273_MODE_RX) {
1856 int bf = radio->rangelow;
1857
1858 r = core->read(core, WL1273_FREQ_SET, &val);
1859 if (r)
1860 dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1861 else
1862 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1863
1864 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1865 if (r)
1866 dev_err(dev, "%s: Get MOST_MODE fails.\n",
1867 __func__);
1868 else if (val == 0)
1869 dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1870 else if (val == 1)
1871 dev_info(dev, "MOST_MODE: Force mono output\n");
1872 else
1873 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1874
1875 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1876 if (r)
1877 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1878 else if (val == 0)
1879 dev_info(dev,
1880 "MOST_BLEND: Switched blend & hysteresis.\n");
1881 else if (val == 1)
1882 dev_info(dev, "MOST_BLEND: Soft blend.\n");
1883 else
1884 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1885
1886 r = core->read(core, WL1273_STEREO_GET, &val);
1887 if (r)
1888 dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1889 else if (val == 0)
1890 dev_info(dev, "STEREO: Not detected\n");
1891 else if (val == 1)
1892 dev_info(dev, "STEREO: Detected\n");
1893 else
1894 dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1895
1896 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1897 if (r)
1898 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1899 else
1900 dev_info(dev, "RX signal strength: %d\n", (s16) val);
1901
1902 r = core->read(core, WL1273_POWER_SET, &val);
1903 if (r)
1904 dev_err(dev, "%s: Get POWER fails.\n", __func__);
1905 else
1906 dev_info(dev, "POWER: 0x%04x\n", val);
1907
1908 r = core->read(core, WL1273_INT_MASK_SET, &val);
1909 if (r)
1910 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1911 else
1912 dev_info(dev, "INT_MASK: 0x%04x\n", val);
1913
1914 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1915 if (r)
1916 dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1917 __func__);
1918 else if (val == 0)
1919 dev_info(dev, "RDS_SYNC: Not synchronized\n");
1920
1921 else if (val == 1)
1922 dev_info(dev, "RDS_SYNC: Synchronized\n");
1923 else
1924 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1925
1926 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1927 if (r)
1928 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1929 __func__);
1930 else
1931 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1932
1933 r = core->read(core, WL1273_VOLUME_SET, &val);
1934 if (r)
1935 dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1936 else
1937 dev_info(dev, "VOLUME: 0x%04x\n", val);
1938 }
1939
1940 return 0;
1941 }
1942
wl1273_vdev_release(struct video_device * dev)1943 static void wl1273_vdev_release(struct video_device *dev)
1944 {
1945 }
1946
1947 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1948 .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1949 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1950 };
1951
1952 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1953 .vidioc_querycap = wl1273_fm_vidioc_querycap,
1954 .vidioc_g_input = wl1273_fm_vidioc_g_input,
1955 .vidioc_s_input = wl1273_fm_vidioc_s_input,
1956 .vidioc_g_audio = wl1273_fm_vidioc_g_audio,
1957 .vidioc_s_audio = wl1273_fm_vidioc_s_audio,
1958 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner,
1959 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner,
1960 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency,
1961 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency,
1962 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,
1963 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator,
1964 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator,
1965 .vidioc_log_status = wl1273_fm_vidioc_log_status,
1966 };
1967
1968 static const struct video_device wl1273_viddev_template = {
1969 .fops = &wl1273_fops,
1970 .ioctl_ops = &wl1273_ioctl_ops,
1971 .name = WL1273_FM_DRIVER_NAME,
1972 .release = wl1273_vdev_release,
1973 .vfl_dir = VFL_DIR_TX,
1974 .device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER |
1975 V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1976 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1977 V4L2_CAP_RDS_OUTPUT,
1978 };
1979
wl1273_fm_radio_remove(struct platform_device * pdev)1980 static void wl1273_fm_radio_remove(struct platform_device *pdev)
1981 {
1982 struct wl1273_device *radio = platform_get_drvdata(pdev);
1983 struct wl1273_core *core = radio->core;
1984
1985 dev_info(&pdev->dev, "%s.\n", __func__);
1986
1987 free_irq(core->client->irq, radio);
1988 core->pdata->free_resources();
1989
1990 v4l2_ctrl_handler_free(&radio->ctrl_handler);
1991 video_unregister_device(&radio->videodev);
1992 v4l2_device_unregister(&radio->v4l2dev);
1993 }
1994
wl1273_fm_radio_probe(struct platform_device * pdev)1995 static int wl1273_fm_radio_probe(struct platform_device *pdev)
1996 {
1997 struct wl1273_core **core = pdev->dev.platform_data;
1998 struct wl1273_device *radio;
1999 struct v4l2_ctrl *ctrl;
2000 int r = 0;
2001
2002 pr_debug("%s\n", __func__);
2003
2004 if (!core) {
2005 dev_err(&pdev->dev, "No platform data.\n");
2006 r = -EINVAL;
2007 goto pdata_err;
2008 }
2009
2010 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2011 if (!radio) {
2012 r = -ENOMEM;
2013 goto pdata_err;
2014 }
2015
2016 /* RDS buffer allocation */
2017 radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2018 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2019 if (!radio->buffer) {
2020 pr_err("Cannot allocate memory for RDS buffer.\n");
2021 r = -ENOMEM;
2022 goto pdata_err;
2023 }
2024
2025 radio->core = *core;
2026 radio->irq_flags = WL1273_IRQ_MASK;
2027 radio->dev = &radio->core->client->dev;
2028 radio->rds_on = false;
2029 radio->core->mode = WL1273_MODE_OFF;
2030 radio->tx_power = 118;
2031 radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2032 radio->band = WL1273_BAND_OTHER;
2033 radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2034 radio->core->channel_number = 2;
2035 radio->core->volume = WL1273_DEFAULT_VOLUME;
2036 radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2037 radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2038 radio->rangelow = WL1273_BAND_OTHER_LOW;
2039 radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2040 radio->stereo = true;
2041 radio->bus_type = "I2C";
2042
2043 if (radio->core->pdata->request_resources) {
2044 r = radio->core->pdata->request_resources(radio->core->client);
2045 if (r) {
2046 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2047 ": Cannot get platform data\n");
2048 goto pdata_err;
2049 }
2050
2051 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2052
2053 r = request_threaded_irq(radio->core->client->irq, NULL,
2054 wl1273_fm_irq_thread_handler,
2055 IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2056 "wl1273-fm", radio);
2057 if (r < 0) {
2058 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2059 ": Unable to register IRQ handler: %d\n", r);
2060 goto err_request_irq;
2061 }
2062 } else {
2063 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ not configured");
2064 r = -EINVAL;
2065 goto pdata_err;
2066 }
2067
2068 init_completion(&radio->busy);
2069 init_waitqueue_head(&radio->read_queue);
2070
2071 radio->write_buf = devm_kzalloc(&pdev->dev, 256, GFP_KERNEL);
2072 if (!radio->write_buf) {
2073 r = -ENOMEM;
2074 goto write_buf_err;
2075 }
2076
2077 radio->dev = &pdev->dev;
2078 radio->v4l2dev.ctrl_handler = &radio->ctrl_handler;
2079 radio->rds_users = 0;
2080
2081 r = v4l2_device_register(&pdev->dev, &radio->v4l2dev);
2082 if (r) {
2083 dev_err(&pdev->dev, "Cannot register v4l2_device.\n");
2084 goto write_buf_err;
2085 }
2086
2087 /* V4L2 configuration */
2088 radio->videodev = wl1273_viddev_template;
2089
2090 radio->videodev.v4l2_dev = &radio->v4l2dev;
2091
2092 v4l2_ctrl_handler_init(&radio->ctrl_handler, 6);
2093
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);
2098
2099 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2100 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
2101
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);
2106
2107 v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2108 V4L2_CID_TUNE_POWER_LEVEL, 91, 122, 1, 118);
2109
2110 ctrl = v4l2_ctrl_new_std(&radio->ctrl_handler, &wl1273_ctrl_ops,
2111 V4L2_CID_TUNE_ANTENNA_CAPACITOR,
2112 0, 255, 1, 255);
2113 if (ctrl)
2114 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
2115
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;
2120 }
2121
2122 video_set_drvdata(&radio->videodev, radio);
2123 platform_set_drvdata(pdev, radio);
2124
2125 /* register video device */
2126 r = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
2127 if (r) {
2128 dev_err(&pdev->dev, WL1273_FM_DRIVER_NAME
2129 ": Could not register video device\n");
2130 goto handler_init_err;
2131 }
2132
2133 return 0;
2134
2135 handler_init_err:
2136 v4l2_ctrl_handler_free(&radio->ctrl_handler);
2137 v4l2_device_unregister(&radio->v4l2dev);
2138 write_buf_err:
2139 free_irq(radio->core->client->irq, radio);
2140 err_request_irq:
2141 radio->core->pdata->free_resources();
2142 pdata_err:
2143 return r;
2144 }
2145
2146 static struct platform_driver wl1273_fm_radio_driver = {
2147 .probe = wl1273_fm_radio_probe,
2148 .remove_new = wl1273_fm_radio_remove,
2149 .driver = {
2150 .name = "wl1273_fm_radio",
2151 },
2152 };
2153
2154 module_platform_driver(wl1273_fm_radio_driver);
2155
2156 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2157 MODULE_DESCRIPTION(DRIVER_DESC);
2158 MODULE_LICENSE("GPL");
2159 MODULE_ALIAS("platform:wl1273_fm_radio");
2160