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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / media / radio / radio-wl1273.c
blob9cf6731fb816b4fe2bb27c6ce06f37658995faf3
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
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
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
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
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
351 if (freq < WL1273_BAND_TX_LOW) {
352 dev_err(radio->dev,
353 "Frequency out of range: %d < %d\n", freq,
354 WL1273_BAND_TX_LOW);
355 return -ERANGE;
356 }
357
358 if (freq > WL1273_BAND_TX_HIGH) {
359 dev_err(radio->dev,
360 "Frequency out of range: %d > %d\n", freq,
361 WL1273_BAND_TX_HIGH);
362 return -ERANGE;
363 }
364
365 /*
366 * The driver works better with this sleep,
367 * the documentation doesn't mention it.
368 */
369 usleep_range(5000, 10000);
370
371 dev_dbg(radio->dev, "%s: freq: %d kHz\n", __func__, freq);
372
373 /* Set the current tx channel */
374 r = core->write(core, WL1273_CHANL_SET, freq / 10);
375 if (r)
376 return r;
377
378 reinit_completion(&radio->busy);
379
380 /* wait for the FR IRQ */
381 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
382 if (!r)
383 return -ETIMEDOUT;
384
385 dev_dbg(radio->dev, "WL1273_CHANL_SET: %d\n", r);
386
387 /* Enable the output power */
388 r = core->write(core, WL1273_POWER_ENB_SET, 1);
389 if (r)
390 return r;
391
392 reinit_completion(&radio->busy);
393
394 /* wait for the POWER_ENB IRQ */
395 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
396 if (!r)
397 return -ETIMEDOUT;
398
399 radio->tx_frequency = freq;
400 dev_dbg(radio->dev, "WL1273_POWER_ENB_SET: %d\n", r);
401
402 return 0;
403 }
404
405 static int wl1273_fm_set_rx_freq(struct wl1273_device *radio, unsigned int freq)
406 {
407 struct wl1273_core *core = radio->core;
408 int r, f;
409
410 if (freq < radio->rangelow) {
411 dev_err(radio->dev,
412 "Frequency out of range: %d < %d\n", freq,
413 radio->rangelow);
414 r = -ERANGE;
415 goto err;
416 }
417
418 if (freq > radio->rangehigh) {
419 dev_err(radio->dev,
420 "Frequency out of range: %d > %d\n", freq,
421 radio->rangehigh);
422 r = -ERANGE;
423 goto err;
424 }
425
426 dev_dbg(radio->dev, "%s: %dkHz\n", __func__, freq);
427
428 core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
429
430 if (radio->band == WL1273_BAND_JAPAN)
431 f = (freq - WL1273_BAND_JAPAN_LOW) / 50;
432 else
433 f = (freq - WL1273_BAND_OTHER_LOW) / 50;
434
435 r = core->write(core, WL1273_FREQ_SET, f);
436 if (r) {
437 dev_err(radio->dev, "FREQ_SET fails\n");
438 goto err;
439 }
440
441 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_PRESET);
442 if (r) {
443 dev_err(radio->dev, "TUNER_MODE_SET fails\n");
444 goto err;
445 }
446
447 reinit_completion(&radio->busy);
448
449 r = wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(2000));
450 if (!r) {
451 dev_err(radio->dev, "%s: TIMEOUT\n", __func__);
452 return -ETIMEDOUT;
453 }
454
455 radio->rd_index = 0;
456 radio->wr_index = 0;
457 radio->rx_frequency = freq;
458 return 0;
459 err:
460 return r;
461 }
462
463 static int wl1273_fm_get_freq(struct wl1273_device *radio)
464 {
465 struct wl1273_core *core = radio->core;
466 unsigned int freq;
467 u16 f;
468 int r;
469
470 if (core->mode == WL1273_MODE_RX) {
471 r = core->read(core, WL1273_FREQ_SET, &f);
472 if (r)
473 return r;
474
475 dev_dbg(radio->dev, "Freq get: 0x%04x\n", f);
476 if (radio->band == WL1273_BAND_JAPAN)
477 freq = WL1273_BAND_JAPAN_LOW + 50 * f;
478 else
479 freq = WL1273_BAND_OTHER_LOW + 50 * f;
480 } else {
481 r = core->read(core, WL1273_CHANL_SET, &f);
482 if (r)
483 return r;
484
485 freq = f * 10;
486 }
487
488 return freq;
489 }
490
491 /**
492 * wl1273_fm_upload_firmware_patch() - Upload the firmware.
493 * @radio: A pointer to the device struct.
494 *
495 * The firmware file consists of arrays of bytes where the first byte
496 * gives the array length. The first byte in the file gives the
497 * number of these arrays.
498 */
499 static int wl1273_fm_upload_firmware_patch(struct wl1273_device *radio)
500 {
501 struct wl1273_core *core = radio->core;
502 unsigned int packet_num;
503 const struct firmware *fw_p;
504 const char *fw_name = "radio-wl1273-fw.bin";
505 struct device *dev = radio->dev;
506 __u8 *ptr;
507 int r;
508
509 dev_dbg(dev, "%s:\n", __func__);
510
511 /*
512 * Uploading the firmware patch is not always necessary,
513 * so we only print an info message.
514 */
515 if (request_firmware(&fw_p, fw_name, dev)) {
516 dev_info(dev, "%s - %s not found\n", __func__, fw_name);
517
518 return 0;
519 }
520
521 ptr = (__u8 *) fw_p->data;
522 packet_num = ptr[0];
523 dev_dbg(dev, "%s: packets: %d\n", __func__, packet_num);
524
525 r = wl1273_fm_write_fw(core, ptr + 1, packet_num);
526 if (r) {
527 dev_err(dev, "FW upload error: %d\n", r);
528 goto out;
529 }
530
531 /* ignore possible error here */
532 core->write(core, WL1273_RESET, 0);
533
534 dev_dbg(dev, "%s - download OK, r: %d\n", __func__, r);
535 out:
536 release_firmware(fw_p);
537 return r;
538 }
539
540 static int wl1273_fm_stop(struct wl1273_device *radio)
541 {
542 struct wl1273_core *core = radio->core;
543
544 if (core->mode == WL1273_MODE_RX) {
545 int r = core->write(core, WL1273_POWER_SET,
546 WL1273_POWER_SET_OFF);
547 if (r)
548 dev_err(radio->dev, "%s: POWER_SET fails: %d\n",
549 __func__, r);
550 } else if (core->mode == WL1273_MODE_TX) {
551 int r = core->write(core, WL1273_PUPD_SET,
552 WL1273_PUPD_SET_OFF);
553 if (r)
554 dev_err(radio->dev,
555 "%s: PUPD_SET fails: %d\n", __func__, r);
556 }
557
558 if (core->pdata->disable) {
559 core->pdata->disable();
560 dev_dbg(radio->dev, "Back to reset\n");
561 }
562
563 return 0;
564 }
565
566 static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
567 {
568 struct wl1273_core *core = radio->core;
569 struct wl1273_fm_platform_data *pdata = core->pdata;
570 struct device *dev = radio->dev;
571 int r = -EINVAL;
572
573 if (pdata->enable && core->mode == WL1273_MODE_OFF) {
574 dev_dbg(radio->dev, "Out of reset\n");
575
576 pdata->enable();
577 msleep(250);
578 }
579
580 if (new_mode == WL1273_MODE_RX) {
581 u16 val = WL1273_POWER_SET_FM;
582
583 if (radio->rds_on)
584 val |= WL1273_POWER_SET_RDS;
585
586 /* If this fails try again */
587 r = core->write(core, WL1273_POWER_SET, val);
588 if (r) {
589 msleep(100);
590
591 r = core->write(core, WL1273_POWER_SET, val);
592 if (r) {
593 dev_err(dev, "%s: POWER_SET fails\n", __func__);
594 goto fail;
595 }
596 }
597
598 /* rds buffer configuration */
599 radio->wr_index = 0;
600 radio->rd_index = 0;
601
602 } else if (new_mode == WL1273_MODE_TX) {
603 /* If this fails try again once */
604 r = core->write(core, WL1273_PUPD_SET, WL1273_PUPD_SET_ON);
605 if (r) {
606 msleep(100);
607 r = core->write(core, WL1273_PUPD_SET,
608 WL1273_PUPD_SET_ON);
609 if (r) {
610 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
611 goto fail;
612 }
613 }
614
615 if (radio->rds_on)
616 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
617 else
618 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
619 } else {
620 dev_warn(dev, "%s: Illegal mode.\n", __func__);
621 }
622
623 if (core->mode == WL1273_MODE_OFF) {
624 r = wl1273_fm_upload_firmware_patch(radio);
625 if (r)
626 dev_warn(dev, "Firmware upload failed.\n");
627
628 /*
629 * Sometimes the chip is in a wrong power state at this point.
630 * So we set the power once again.
631 */
632 if (new_mode == WL1273_MODE_RX) {
633 u16 val = WL1273_POWER_SET_FM;
634
635 if (radio->rds_on)
636 val |= WL1273_POWER_SET_RDS;
637
638 r = core->write(core, WL1273_POWER_SET, val);
639 if (r) {
640 dev_err(dev, "%s: POWER_SET fails\n", __func__);
641 goto fail;
642 }
643 } else if (new_mode == WL1273_MODE_TX) {
644 r = core->write(core, WL1273_PUPD_SET,
645 WL1273_PUPD_SET_ON);
646 if (r) {
647 dev_err(dev, "%s: PUPD_SET fails\n", __func__);
648 goto fail;
649 }
650 }
651 }
652
653 return 0;
654 fail:
655 if (pdata->disable)
656 pdata->disable();
657
658 dev_dbg(dev, "%s: return: %d\n", __func__, r);
659 return r;
660 }
661
662 static int wl1273_fm_suspend(struct wl1273_device *radio)
663 {
664 struct wl1273_core *core = radio->core;
665 int r = 0;
666
667 /* Cannot go from OFF to SUSPENDED */
668 if (core->mode == WL1273_MODE_RX)
669 r = core->write(core, WL1273_POWER_SET,
670 WL1273_POWER_SET_RETENTION);
671 else if (core->mode == WL1273_MODE_TX)
672 r = core->write(core, WL1273_PUPD_SET,
673 WL1273_PUPD_SET_RETENTION);
674 else
675 r = -EINVAL;
676
677 if (r) {
678 dev_err(radio->dev, "%s: POWER_SET fails: %d\n", __func__, r);
679 goto out;
680 }
681
682 out:
683 return r;
684 }
685
686 static int wl1273_fm_set_mode(struct wl1273_device *radio, int mode)
687 {
688 struct wl1273_core *core = radio->core;
689 struct device *dev = radio->dev;
690 int old_mode;
691 int r;
692
693 dev_dbg(dev, "%s\n", __func__);
694 dev_dbg(dev, "Forbidden modes: 0x%02x\n", radio->forbidden);
695
696 old_mode = core->mode;
697 if (mode & radio->forbidden) {
698 r = -EPERM;
699 goto out;
700 }
701
702 switch (mode) {
703 case WL1273_MODE_RX:
704 case WL1273_MODE_TX:
705 r = wl1273_fm_start(radio, mode);
706 if (r) {
707 dev_err(dev, "%s: Cannot start.\n", __func__);
708 wl1273_fm_stop(radio);
709 goto out;
710 }
711
712 core->mode = mode;
713 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
714 if (r) {
715 dev_err(dev, "INT_MASK_SET fails.\n");
716 goto out;
717 }
718
719 /* remember previous settings */
720 if (mode == WL1273_MODE_RX) {
721 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
722 if (r) {
723 dev_err(dev, "set freq fails: %d.\n", r);
724 goto out;
725 }
726
727 r = core->set_volume(core, core->volume);
728 if (r) {
729 dev_err(dev, "set volume fails: %d.\n", r);
730 goto out;
731 }
732
733 dev_dbg(dev, "%s: Set vol: %d.\n", __func__,
734 core->volume);
735 } else {
736 r = wl1273_fm_set_tx_freq(radio, radio->tx_frequency);
737 if (r) {
738 dev_err(dev, "set freq fails: %d.\n", r);
739 goto out;
740 }
741 }
742
743 dev_dbg(radio->dev, "%s: Set audio mode.\n", __func__);
744
745 r = core->set_audio(core, core->audio_mode);
746 if (r)
747 dev_err(dev, "Cannot set audio mode.\n");
748 break;
749
750 case WL1273_MODE_OFF:
751 r = wl1273_fm_stop(radio);
752 if (r)
753 dev_err(dev, "%s: Off fails: %d\n", __func__, r);
754 else
755 core->mode = WL1273_MODE_OFF;
756
757 break;
758
759 case WL1273_MODE_SUSPENDED:
760 r = wl1273_fm_suspend(radio);
761 if (r)
762 dev_err(dev, "%s: Suspend fails: %d\n", __func__, r);
763 else
764 core->mode = WL1273_MODE_SUSPENDED;
765
766 break;
767
768 default:
769 dev_err(dev, "%s: Unknown mode: %d\n", __func__, mode);
770 r = -EINVAL;
771 break;
772 }
773 out:
774 if (r)
775 core->mode = old_mode;
776
777 return r;
778 }
779
780 static int wl1273_fm_set_seek(struct wl1273_device *radio,
781 unsigned int wrap_around,
782 unsigned int seek_upward,
783 int level)
784 {
785 struct wl1273_core *core = radio->core;
786 int r = 0;
787 unsigned int dir = (seek_upward == 0) ? 0 : 1;
788 unsigned int f;
789
790 f = radio->rx_frequency;
791 dev_dbg(radio->dev, "rx_frequency: %d\n", f);
792
793 if (dir && f + radio->spacing <= radio->rangehigh)
794 r = wl1273_fm_set_rx_freq(radio, f + radio->spacing);
795 else if (dir && wrap_around)
796 r = wl1273_fm_set_rx_freq(radio, radio->rangelow);
797 else if (f - radio->spacing >= radio->rangelow)
798 r = wl1273_fm_set_rx_freq(radio, f - radio->spacing);
799 else if (wrap_around)
800 r = wl1273_fm_set_rx_freq(radio, radio->rangehigh);
801
802 if (r)
803 goto out;
804
805 if (level < SCHAR_MIN || level > SCHAR_MAX)
806 return -EINVAL;
807
808 reinit_completion(&radio->busy);
809 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
810
811 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
812 if (r)
813 goto out;
814
815 dev_dbg(radio->dev, "%s\n", __func__);
816
817 r = core->write(core, WL1273_SEARCH_LVL_SET, level);
818 if (r)
819 goto out;
820
821 r = core->write(core, WL1273_SEARCH_DIR_SET, dir);
822 if (r)
823 goto out;
824
825 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
826 if (r)
827 goto out;
828
829 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
830 if (!(radio->irq_received & WL1273_BL_EVENT))
831 goto out;
832
833 radio->irq_received &= ~WL1273_BL_EVENT;
834
835 if (!wrap_around)
836 goto out;
837
838 /* Wrap around */
839 dev_dbg(radio->dev, "Wrap around in HW seek.\n");
840
841 if (seek_upward)
842 f = radio->rangelow;
843 else
844 f = radio->rangehigh;
845
846 r = wl1273_fm_set_rx_freq(radio, f);
847 if (r)
848 goto out;
849
850 reinit_completion(&radio->busy);
851 dev_dbg(radio->dev, "%s: BUSY\n", __func__);
852
853 r = core->write(core, WL1273_TUNER_MODE_SET, TUNER_MODE_AUTO_SEEK);
854 if (r)
855 goto out;
856
857 wait_for_completion_timeout(&radio->busy, msecs_to_jiffies(1000));
858 out:
859 dev_dbg(radio->dev, "%s: Err: %d\n", __func__, r);
860 return r;
861 }
862
863 /**
864 * wl1273_fm_get_tx_ctune() - Get the TX tuning capacitor value.
865 * @radio: A pointer to the device struct.
866 */
867 static unsigned int wl1273_fm_get_tx_ctune(struct wl1273_device *radio)
868 {
869 struct wl1273_core *core = radio->core;
870 struct device *dev = radio->dev;
871 u16 val;
872 int r;
873
874 if (core->mode == WL1273_MODE_OFF ||
875 core->mode == WL1273_MODE_SUSPENDED)
876 return -EPERM;
877
878 r = core->read(core, WL1273_READ_FMANT_TUNE_VALUE, &val);
879 if (r) {
880 dev_err(dev, "%s: read error: %d\n", __func__, r);
881 goto out;
882 }
883
884 out:
885 return val;
886 }
887
888 /**
889 * wl1273_fm_set_preemphasis() - Set the TX pre-emphasis value.
890 * @radio: A pointer to the device struct.
891 * @preemphasis: The new pre-amphasis value.
892 *
893 * Possible pre-emphasis values are: V4L2_PREEMPHASIS_DISABLED,
894 * V4L2_PREEMPHASIS_50_uS and V4L2_PREEMPHASIS_75_uS.
895 */
896 static int wl1273_fm_set_preemphasis(struct wl1273_device *radio,
897 unsigned int preemphasis)
898 {
899 struct wl1273_core *core = radio->core;
900 int r;
901 u16 em;
902
903 if (core->mode == WL1273_MODE_OFF ||
904 core->mode == WL1273_MODE_SUSPENDED)
905 return -EPERM;
906
907 mutex_lock(&core->lock);
908
909 switch (preemphasis) {
910 case V4L2_PREEMPHASIS_DISABLED:
911 em = 1;
912 break;
913 case V4L2_PREEMPHASIS_50_uS:
914 em = 0;
915 break;
916 case V4L2_PREEMPHASIS_75_uS:
917 em = 2;
918 break;
919 default:
920 r = -EINVAL;
921 goto out;
922 }
923
924 r = core->write(core, WL1273_PREMPH_SET, em);
925 if (r)
926 goto out;
927
928 radio->preemphasis = preemphasis;
929
930 out:
931 mutex_unlock(&core->lock);
932 return r;
933 }
934
935 static int wl1273_fm_rds_on(struct wl1273_device *radio)
936 {
937 struct wl1273_core *core = radio->core;
938 int r;
939
940 dev_dbg(radio->dev, "%s\n", __func__);
941 if (radio->rds_on)
942 return 0;
943
944 r = core->write(core, WL1273_POWER_SET,
945 WL1273_POWER_SET_FM | WL1273_POWER_SET_RDS);
946 if (r)
947 goto out;
948
949 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
950 if (r)
951 dev_err(radio->dev, "set freq fails: %d.\n", r);
952 out:
953 return r;
954 }
955
956 static int wl1273_fm_rds_off(struct wl1273_device *radio)
957 {
958 struct wl1273_core *core = radio->core;
959 int r;
960
961 if (!radio->rds_on)
962 return 0;
963
964 radio->irq_flags &= ~WL1273_RDS_EVENT;
965
966 r = core->write(core, WL1273_INT_MASK_SET, radio->irq_flags);
967 if (r)
968 goto out;
969
970 /* Service pending read */
971 wake_up_interruptible(&radio->read_queue);
972
973 dev_dbg(radio->dev, "%s\n", __func__);
974
975 r = core->write(core, WL1273_POWER_SET, WL1273_POWER_SET_FM);
976 if (r)
977 goto out;
978
979 r = wl1273_fm_set_rx_freq(radio, radio->rx_frequency);
980 if (r)
981 dev_err(radio->dev, "set freq fails: %d.\n", r);
982 out:
983 dev_dbg(radio->dev, "%s: exiting...\n", __func__);
984
985 return r;
986 }
987
988 static int wl1273_fm_set_rds(struct wl1273_device *radio, unsigned int new_mode)
989 {
990 int r = 0;
991 struct wl1273_core *core = radio->core;
992
993 if (core->mode == WL1273_MODE_OFF ||
994 core->mode == WL1273_MODE_SUSPENDED)
995 return -EPERM;
996
997 if (new_mode == WL1273_RDS_RESET) {
998 r = core->write(core, WL1273_RDS_CNTRL_SET, 1);
999 return r;
1000 }
1001
1002 if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_OFF) {
1003 r = core->write(core, WL1273_RDS_DATA_ENB, 0);
1004 } else if (core->mode == WL1273_MODE_TX && new_mode == WL1273_RDS_ON) {
1005 r = core->write(core, WL1273_RDS_DATA_ENB, 1);
1006 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_OFF) {
1007 r = wl1273_fm_rds_off(radio);
1008 } else if (core->mode == WL1273_MODE_RX && new_mode == WL1273_RDS_ON) {
1009 r = wl1273_fm_rds_on(radio);
1010 } else {
1011 dev_err(radio->dev, "%s: Unknown mode: %d\n",
1012 __func__, new_mode);
1013 r = -EINVAL;
1014 }
1015
1016 if (!r)
1017 radio->rds_on = (new_mode == WL1273_RDS_ON) ? true : false;
1018
1019 return r;
1020 }
1021
1022 static ssize_t wl1273_fm_fops_write(struct file *file, const char __user *buf,
1023 size_t count, loff_t *ppos)
1024 {
1025 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1026 struct wl1273_core *core = radio->core;
1027 u16 val;
1028 int r;
1029
1030 dev_dbg(radio->dev, "%s\n", __func__);
1031
1032 if (core->mode != WL1273_MODE_TX)
1033 return count;
1034
1035 if (radio->rds_users == 0) {
1036 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1037 return 0;
1038 }
1039
1040 if (mutex_lock_interruptible(&core->lock))
1041 return -EINTR;
1042 /*
1043 * Multiple processes can open the device, but only
1044 * one gets to write to it.
1045 */
1046 if (radio->owner && radio->owner != file) {
1047 r = -EBUSY;
1048 goto out;
1049 }
1050 radio->owner = file;
1051
1052 /* Manual Mode */
1053 if (count > 255)
1054 val = 255;
1055 else
1056 val = count;
1057
1058 core->write(core, WL1273_RDS_CONFIG_DATA_SET, val);
1059
1060 if (copy_from_user(radio->write_buf + 1, buf, val)) {
1061 r = -EFAULT;
1062 goto out;
1063 }
1064
1065 dev_dbg(radio->dev, "Count: %d\n", val);
1066 dev_dbg(radio->dev, "From user: \"%s\"\n", radio->write_buf);
1067
1068 radio->write_buf[0] = WL1273_RDS_DATA_SET;
1069 core->write_data(core, radio->write_buf, val + 1);
1070
1071 r = val;
1072 out:
1073 mutex_unlock(&core->lock);
1074
1075 return r;
1076 }
1077
1078 static unsigned int wl1273_fm_fops_poll(struct file *file,
1079 struct poll_table_struct *pts)
1080 {
1081 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1082 struct wl1273_core *core = radio->core;
1083
1084 if (radio->owner && radio->owner != file)
1085 return -EBUSY;
1086
1087 radio->owner = file;
1088
1089 if (core->mode == WL1273_MODE_RX) {
1090 poll_wait(file, &radio->read_queue, pts);
1091
1092 if (radio->rd_index != radio->wr_index)
1093 return POLLIN | POLLRDNORM;
1094
1095 } else if (core->mode == WL1273_MODE_TX) {
1096 return POLLOUT | POLLWRNORM;
1097 }
1098
1099 return 0;
1100 }
1101
1102 static int wl1273_fm_fops_open(struct file *file)
1103 {
1104 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1105 struct wl1273_core *core = radio->core;
1106 int r = 0;
1107
1108 dev_dbg(radio->dev, "%s\n", __func__);
1109
1110 if (core->mode == WL1273_MODE_RX && radio->rds_on &&
1111 !radio->rds_users) {
1112 dev_dbg(radio->dev, "%s: Mode: %d\n", __func__, core->mode);
1113
1114 if (mutex_lock_interruptible(&core->lock))
1115 return -EINTR;
1116
1117 radio->irq_flags |= WL1273_RDS_EVENT;
1118
1119 r = core->write(core, WL1273_INT_MASK_SET,
1120 radio->irq_flags);
1121 if (r) {
1122 mutex_unlock(&core->lock);
1123 goto out;
1124 }
1125
1126 radio->rds_users++;
1127
1128 mutex_unlock(&core->lock);
1129 }
1130 out:
1131 return r;
1132 }
1133
1134 static int wl1273_fm_fops_release(struct file *file)
1135 {
1136 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1137 struct wl1273_core *core = radio->core;
1138 int r = 0;
1139
1140 dev_dbg(radio->dev, "%s\n", __func__);
1141
1142 if (radio->rds_users > 0) {
1143 radio->rds_users--;
1144 if (radio->rds_users == 0) {
1145 if (mutex_lock_interruptible(&core->lock))
1146 return -EINTR;
1147
1148 radio->irq_flags &= ~WL1273_RDS_EVENT;
1149
1150 if (core->mode == WL1273_MODE_RX) {
1151 r = core->write(core,
1152 WL1273_INT_MASK_SET,
1153 radio->irq_flags);
1154 if (r) {
1155 mutex_unlock(&core->lock);
1156 goto out;
1157 }
1158 }
1159 mutex_unlock(&core->lock);
1160 }
1161 }
1162
1163 if (file == radio->owner)
1164 radio->owner = NULL;
1165 out:
1166 return r;
1167 }
1168
1169 static ssize_t wl1273_fm_fops_read(struct file *file, char __user *buf,
1170 size_t count, loff_t *ppos)
1171 {
1172 int r = 0;
1173 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1174 struct wl1273_core *core = radio->core;
1175 unsigned int block_count = 0;
1176 u16 val;
1177
1178 dev_dbg(radio->dev, "%s\n", __func__);
1179
1180 if (core->mode != WL1273_MODE_RX)
1181 return 0;
1182
1183 if (radio->rds_users == 0) {
1184 dev_warn(radio->dev, "%s: RDS not on.\n", __func__);
1185 return 0;
1186 }
1187
1188 if (mutex_lock_interruptible(&core->lock))
1189 return -EINTR;
1190
1191 /*
1192 * Multiple processes can open the device, but only
1193 * one at a time gets read access.
1194 */
1195 if (radio->owner && radio->owner != file) {
1196 r = -EBUSY;
1197 goto out;
1198 }
1199 radio->owner = file;
1200
1201 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1202 if (r) {
1203 dev_err(radio->dev, "%s: Get RDS_SYNC fails.\n", __func__);
1204 goto out;
1205 } else if (val == 0) {
1206 dev_info(radio->dev, "RDS_SYNC: Not synchronized\n");
1207 r = -ENODATA;
1208 goto out;
1209 }
1210
1211 /* block if no new data available */
1212 while (radio->wr_index == radio->rd_index) {
1213 if (file->f_flags & O_NONBLOCK) {
1214 r = -EWOULDBLOCK;
1215 goto out;
1216 }
1217
1218 dev_dbg(radio->dev, "%s: Wait for RDS data.\n", __func__);
1219 if (wait_event_interruptible(radio->read_queue,
1220 radio->wr_index !=
1221 radio->rd_index) < 0) {
1222 r = -EINTR;
1223 goto out;
1224 }
1225 }
1226
1227 /* calculate block count from byte count */
1228 count /= RDS_BLOCK_SIZE;
1229
1230 /* copy RDS blocks from the internal buffer and to user buffer */
1231 while (block_count < count) {
1232 if (radio->rd_index == radio->wr_index)
1233 break;
1234
1235 /* always transfer complete RDS blocks */
1236 if (copy_to_user(buf, &radio->buffer[radio->rd_index],
1237 RDS_BLOCK_SIZE))
1238 break;
1239
1240 /* increment and wrap the read pointer */
1241 radio->rd_index += RDS_BLOCK_SIZE;
1242 if (radio->rd_index >= radio->buf_size)
1243 radio->rd_index = 0;
1244
1245 /* increment counters */
1246 block_count++;
1247 buf += RDS_BLOCK_SIZE;
1248 r += RDS_BLOCK_SIZE;
1249 }
1250
1251 out:
1252 dev_dbg(radio->dev, "%s: exit\n", __func__);
1253 mutex_unlock(&core->lock);
1254
1255 return r;
1256 }
1257
1258 static const struct v4l2_file_operations wl1273_fops = {
1259 .owner = THIS_MODULE,
1260 .read = wl1273_fm_fops_read,
1261 .write = wl1273_fm_fops_write,
1262 .poll = wl1273_fm_fops_poll,
1263 .unlocked_ioctl = video_ioctl2,
1264 .open = wl1273_fm_fops_open,
1265 .release = wl1273_fm_fops_release,
1266 };
1267
1268 static int wl1273_fm_vidioc_querycap(struct file *file, void *priv,
1269 struct v4l2_capability *capability)
1270 {
1271 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1272
1273 dev_dbg(radio->dev, "%s\n", __func__);
1274
1275 strlcpy(capability->driver, WL1273_FM_DRIVER_NAME,
1276 sizeof(capability->driver));
1277 strlcpy(capability->card, "Texas Instruments Wl1273 FM Radio",
1278 sizeof(capability->card));
1279 strlcpy(capability->bus_info, radio->bus_type,
1280 sizeof(capability->bus_info));
1281
1282 capability->capabilities = V4L2_CAP_HW_FREQ_SEEK |
1283 V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_AUDIO |
1284 V4L2_CAP_RDS_CAPTURE | V4L2_CAP_MODULATOR |
1285 V4L2_CAP_RDS_OUTPUT;
1286
1287 return 0;
1288 }
1289
1290 static int wl1273_fm_vidioc_g_input(struct file *file, void *priv,
1291 unsigned int *i)
1292 {
1293 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1294
1295 dev_dbg(radio->dev, "%s\n", __func__);
1296
1297 *i = 0;
1298
1299 return 0;
1300 }
1301
1302 static int wl1273_fm_vidioc_s_input(struct file *file, void *priv,
1303 unsigned int i)
1304 {
1305 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1306
1307 dev_dbg(radio->dev, "%s\n", __func__);
1308
1309 if (i != 0)
1310 return -EINVAL;
1311
1312 return 0;
1313 }
1314
1315 /**
1316 * wl1273_fm_set_tx_power() - Set the transmission power value.
1317 * @core: A pointer to the device struct.
1318 * @power: The new power value.
1319 */
1320 static int wl1273_fm_set_tx_power(struct wl1273_device *radio, u16 power)
1321 {
1322 struct wl1273_core *core = radio->core;
1323 int r;
1324
1325 if (core->mode == WL1273_MODE_OFF ||
1326 core->mode == WL1273_MODE_SUSPENDED)
1327 return -EPERM;
1328
1329 mutex_lock(&core->lock);
1330
1331 /* Convert the dBuV value to chip presentation */
1332 r = core->write(core, WL1273_POWER_LEV_SET, 122 - power);
1333 if (r)
1334 goto out;
1335
1336 radio->tx_power = power;
1337
1338 out:
1339 mutex_unlock(&core->lock);
1340 return r;
1341 }
1342
1343 #define WL1273_SPACING_50kHz 1
1344 #define WL1273_SPACING_100kHz 2
1345 #define WL1273_SPACING_200kHz 4
1346
1347 static int wl1273_fm_tx_set_spacing(struct wl1273_device *radio,
1348 unsigned int spacing)
1349 {
1350 struct wl1273_core *core = radio->core;
1351 int r;
1352
1353 if (spacing == 0) {
1354 r = core->write(core, WL1273_SCAN_SPACING_SET,
1355 WL1273_SPACING_100kHz);
1356 radio->spacing = 100;
1357 } else if (spacing - 50000 < 25000) {
1358 r = core->write(core, WL1273_SCAN_SPACING_SET,
1359 WL1273_SPACING_50kHz);
1360 radio->spacing = 50;
1361 } else if (spacing - 100000 < 50000) {
1362 r = core->write(core, WL1273_SCAN_SPACING_SET,
1363 WL1273_SPACING_100kHz);
1364 radio->spacing = 100;
1365 } else {
1366 r = core->write(core, WL1273_SCAN_SPACING_SET,
1367 WL1273_SPACING_200kHz);
1368 radio->spacing = 200;
1369 }
1370
1371 return r;
1372 }
1373
1374 static int wl1273_fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1375 {
1376 struct wl1273_device *radio = ctrl->priv;
1377 struct wl1273_core *core = radio->core;
1378
1379 dev_dbg(radio->dev, "%s\n", __func__);
1380
1381 if (mutex_lock_interruptible(&core->lock))
1382 return -EINTR;
1383
1384 switch (ctrl->id) {
1385 case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
1386 ctrl->val = wl1273_fm_get_tx_ctune(radio);
1387 break;
1388
1389 default:
1390 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1391 __func__, ctrl->id);
1392 break;
1393 }
1394
1395 mutex_unlock(&core->lock);
1396
1397 return 0;
1398 }
1399
1400 #define WL1273_MUTE_SOFT_ENABLE (1 << 0)
1401 #define WL1273_MUTE_AC (1 << 1)
1402 #define WL1273_MUTE_HARD_LEFT (1 << 2)
1403 #define WL1273_MUTE_HARD_RIGHT (1 << 3)
1404 #define WL1273_MUTE_SOFT_FORCE (1 << 4)
1405
1406 static inline struct wl1273_device *to_radio(struct v4l2_ctrl *ctrl)
1407 {
1408 return container_of(ctrl->handler, struct wl1273_device, ctrl_handler);
1409 }
1410
1411 static int wl1273_fm_vidioc_s_ctrl(struct v4l2_ctrl *ctrl)
1412 {
1413 struct wl1273_device *radio = to_radio(ctrl);
1414 struct wl1273_core *core = radio->core;
1415 int r = 0;
1416
1417 dev_dbg(radio->dev, "%s\n", __func__);
1418
1419 switch (ctrl->id) {
1420 case V4L2_CID_AUDIO_MUTE:
1421 if (mutex_lock_interruptible(&core->lock))
1422 return -EINTR;
1423
1424 if (core->mode == WL1273_MODE_RX && ctrl->val)
1425 r = core->write(core,
1426 WL1273_MUTE_STATUS_SET,
1427 WL1273_MUTE_HARD_LEFT |
1428 WL1273_MUTE_HARD_RIGHT);
1429 else if (core->mode == WL1273_MODE_RX)
1430 r = core->write(core,
1431 WL1273_MUTE_STATUS_SET, 0x0);
1432 else if (core->mode == WL1273_MODE_TX && ctrl->val)
1433 r = core->write(core, WL1273_MUTE, 1);
1434 else if (core->mode == WL1273_MODE_TX)
1435 r = core->write(core, WL1273_MUTE, 0);
1436
1437 mutex_unlock(&core->lock);
1438 break;
1439
1440 case V4L2_CID_AUDIO_VOLUME:
1441 if (ctrl->val == 0)
1442 r = wl1273_fm_set_mode(radio, WL1273_MODE_OFF);
1443 else
1444 r = core->set_volume(core, core->volume);
1445 break;
1446
1447 case V4L2_CID_TUNE_PREEMPHASIS:
1448 r = wl1273_fm_set_preemphasis(radio, ctrl->val);
1449 break;
1450
1451 case V4L2_CID_TUNE_POWER_LEVEL:
1452 r = wl1273_fm_set_tx_power(radio, ctrl->val);
1453 break;
1454
1455 default:
1456 dev_warn(radio->dev, "%s: Unknown IOCTL: %d\n",
1457 __func__, ctrl->id);
1458 break;
1459 }
1460
1461 dev_dbg(radio->dev, "%s\n", __func__);
1462 return r;
1463 }
1464
1465 static int wl1273_fm_vidioc_g_audio(struct file *file, void *priv,
1466 struct v4l2_audio *audio)
1467 {
1468 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1469
1470 dev_dbg(radio->dev, "%s\n", __func__);
1471
1472 if (audio->index > 1)
1473 return -EINVAL;
1474
1475 strlcpy(audio->name, "Radio", sizeof(audio->name));
1476 audio->capability = V4L2_AUDCAP_STEREO;
1477
1478 return 0;
1479 }
1480
1481 static int wl1273_fm_vidioc_s_audio(struct file *file, void *priv,
1482 const struct v4l2_audio *audio)
1483 {
1484 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1485
1486 dev_dbg(radio->dev, "%s\n", __func__);
1487
1488 if (audio->index != 0)
1489 return -EINVAL;
1490
1491 return 0;
1492 }
1493
1494 #define WL1273_RDS_NOT_SYNCHRONIZED 0
1495 #define WL1273_RDS_SYNCHRONIZED 1
1496
1497 static int wl1273_fm_vidioc_g_tuner(struct file *file, void *priv,
1498 struct v4l2_tuner *tuner)
1499 {
1500 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1501 struct wl1273_core *core = radio->core;
1502 u16 val;
1503 int r;
1504
1505 dev_dbg(radio->dev, "%s\n", __func__);
1506
1507 if (tuner->index > 0)
1508 return -EINVAL;
1509
1510 strlcpy(tuner->name, WL1273_FM_DRIVER_NAME, sizeof(tuner->name));
1511 tuner->type = V4L2_TUNER_RADIO;
1512
1513 tuner->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1514 tuner->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1515
1516 tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1517 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO |
1518 V4L2_TUNER_CAP_HWSEEK_BOUNDED | V4L2_TUNER_CAP_HWSEEK_WRAP;
1519
1520 if (radio->stereo)
1521 tuner->audmode = V4L2_TUNER_MODE_STEREO;
1522 else
1523 tuner->audmode = V4L2_TUNER_MODE_MONO;
1524
1525 if (core->mode != WL1273_MODE_RX)
1526 return 0;
1527
1528 if (mutex_lock_interruptible(&core->lock))
1529 return -EINTR;
1530
1531 r = core->read(core, WL1273_STEREO_GET, &val);
1532 if (r)
1533 goto out;
1534
1535 if (val == 1)
1536 tuner->rxsubchans = V4L2_TUNER_SUB_STEREO;
1537 else
1538 tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
1539
1540 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1541 if (r)
1542 goto out;
1543
1544 tuner->signal = (s16) val;
1545 dev_dbg(radio->dev, "Signal: %d\n", tuner->signal);
1546
1547 tuner->afc = 0;
1548
1549 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1550 if (r)
1551 goto out;
1552
1553 if (val == WL1273_RDS_SYNCHRONIZED)
1554 tuner->rxsubchans |= V4L2_TUNER_SUB_RDS;
1555 out:
1556 mutex_unlock(&core->lock);
1557
1558 return r;
1559 }
1560
1561 static int wl1273_fm_vidioc_s_tuner(struct file *file, void *priv,
1562 const struct v4l2_tuner *tuner)
1563 {
1564 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1565 struct wl1273_core *core = radio->core;
1566 int r = 0;
1567
1568 dev_dbg(radio->dev, "%s\n", __func__);
1569 dev_dbg(radio->dev, "tuner->index: %d\n", tuner->index);
1570 dev_dbg(radio->dev, "tuner->name: %s\n", tuner->name);
1571 dev_dbg(radio->dev, "tuner->capability: 0x%04x\n", tuner->capability);
1572 dev_dbg(radio->dev, "tuner->rxsubchans: 0x%04x\n", tuner->rxsubchans);
1573 dev_dbg(radio->dev, "tuner->rangelow: %d\n", tuner->rangelow);
1574 dev_dbg(radio->dev, "tuner->rangehigh: %d\n", tuner->rangehigh);
1575
1576 if (tuner->index > 0)
1577 return -EINVAL;
1578
1579 if (mutex_lock_interruptible(&core->lock))
1580 return -EINTR;
1581
1582 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1583 if (r)
1584 goto out;
1585
1586 if (tuner->rxsubchans & V4L2_TUNER_SUB_RDS)
1587 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1588 else
1589 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1590
1591 if (r)
1592 dev_warn(radio->dev, "%s: RDS fails: %d\n", __func__, r);
1593
1594 if (tuner->audmode == V4L2_TUNER_MODE_MONO) {
1595 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
1596 if (r < 0) {
1597 dev_warn(radio->dev, "%s: MOST_MODE fails: %d\n",
1598 __func__, r);
1599 goto out;
1600 }
1601 radio->stereo = false;
1602 } else if (tuner->audmode == V4L2_TUNER_MODE_STEREO) {
1603 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
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 = true;
1610 } else {
1611 dev_err(radio->dev, "%s: tuner->audmode: %d\n",
1612 __func__, tuner->audmode);
1613 r = -EINVAL;
1614 goto out;
1615 }
1616
1617 out:
1618 mutex_unlock(&core->lock);
1619
1620 return r;
1621 }
1622
1623 static int wl1273_fm_vidioc_g_frequency(struct file *file, void *priv,
1624 struct v4l2_frequency *freq)
1625 {
1626 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1627 struct wl1273_core *core = radio->core;
1628
1629 dev_dbg(radio->dev, "%s\n", __func__);
1630
1631 if (mutex_lock_interruptible(&core->lock))
1632 return -EINTR;
1633
1634 freq->type = V4L2_TUNER_RADIO;
1635 freq->frequency = WL1273_FREQ(wl1273_fm_get_freq(radio));
1636
1637 mutex_unlock(&core->lock);
1638
1639 return 0;
1640 }
1641
1642 static int wl1273_fm_vidioc_s_frequency(struct file *file, void *priv,
1643 const struct v4l2_frequency *freq)
1644 {
1645 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1646 struct wl1273_core *core = radio->core;
1647 int r;
1648
1649 dev_dbg(radio->dev, "%s: %d\n", __func__, freq->frequency);
1650
1651 if (freq->type != V4L2_TUNER_RADIO) {
1652 dev_dbg(radio->dev,
1653 "freq->type != V4L2_TUNER_RADIO: %d\n", freq->type);
1654 return -EINVAL;
1655 }
1656
1657 if (mutex_lock_interruptible(&core->lock))
1658 return -EINTR;
1659
1660 if (core->mode == WL1273_MODE_RX) {
1661 dev_dbg(radio->dev, "freq: %d\n", freq->frequency);
1662
1663 r = wl1273_fm_set_rx_freq(radio,
1664 WL1273_INV_FREQ(freq->frequency));
1665 if (r)
1666 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1667 ": set frequency failed with %d\n", r);
1668 } else {
1669 r = wl1273_fm_set_tx_freq(radio,
1670 WL1273_INV_FREQ(freq->frequency));
1671 if (r)
1672 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1673 ": set frequency failed with %d\n", r);
1674 }
1675
1676 mutex_unlock(&core->lock);
1677
1678 dev_dbg(radio->dev, "wl1273_vidioc_s_frequency: DONE\n");
1679 return r;
1680 }
1681
1682 #define WL1273_DEFAULT_SEEK_LEVEL 7
1683
1684 static int wl1273_fm_vidioc_s_hw_freq_seek(struct file *file, void *priv,
1685 const struct v4l2_hw_freq_seek *seek)
1686 {
1687 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1688 struct wl1273_core *core = radio->core;
1689 int r;
1690
1691 dev_dbg(radio->dev, "%s\n", __func__);
1692
1693 if (seek->tuner != 0 || seek->type != V4L2_TUNER_RADIO)
1694 return -EINVAL;
1695
1696 if (file->f_flags & O_NONBLOCK)
1697 return -EWOULDBLOCK;
1698
1699 if (mutex_lock_interruptible(&core->lock))
1700 return -EINTR;
1701
1702 r = wl1273_fm_set_mode(radio, WL1273_MODE_RX);
1703 if (r)
1704 goto out;
1705
1706 r = wl1273_fm_tx_set_spacing(radio, seek->spacing);
1707 if (r)
1708 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1709
1710 r = wl1273_fm_set_seek(radio, seek->wrap_around, seek->seek_upward,
1711 WL1273_DEFAULT_SEEK_LEVEL);
1712 if (r)
1713 dev_warn(radio->dev, "HW seek failed: %d\n", r);
1714
1715 out:
1716 mutex_unlock(&core->lock);
1717 return r;
1718 }
1719
1720 static int wl1273_fm_vidioc_s_modulator(struct file *file, void *priv,
1721 const struct v4l2_modulator *modulator)
1722 {
1723 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1724 struct wl1273_core *core = radio->core;
1725 int r = 0;
1726
1727 dev_dbg(radio->dev, "%s\n", __func__);
1728
1729 if (modulator->index > 0)
1730 return -EINVAL;
1731
1732 if (mutex_lock_interruptible(&core->lock))
1733 return -EINTR;
1734
1735 r = wl1273_fm_set_mode(radio, WL1273_MODE_TX);
1736 if (r)
1737 goto out;
1738
1739 if (modulator->txsubchans & V4L2_TUNER_SUB_RDS)
1740 r = wl1273_fm_set_rds(radio, WL1273_RDS_ON);
1741 else
1742 r = wl1273_fm_set_rds(radio, WL1273_RDS_OFF);
1743
1744 if (modulator->txsubchans & V4L2_TUNER_SUB_MONO)
1745 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
1746 else
1747 r = core->write(core, WL1273_MONO_SET,
1748 WL1273_RX_STEREO);
1749 if (r < 0)
1750 dev_warn(radio->dev, WL1273_FM_DRIVER_NAME
1751 "MONO_SET fails: %d\n", r);
1752 out:
1753 mutex_unlock(&core->lock);
1754
1755 return r;
1756 }
1757
1758 static int wl1273_fm_vidioc_g_modulator(struct file *file, void *priv,
1759 struct v4l2_modulator *modulator)
1760 {
1761 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1762 struct wl1273_core *core = radio->core;
1763 u16 val;
1764 int r;
1765
1766 dev_dbg(radio->dev, "%s\n", __func__);
1767
1768 strlcpy(modulator->name, WL1273_FM_DRIVER_NAME,
1769 sizeof(modulator->name));
1770
1771 modulator->rangelow = WL1273_FREQ(WL1273_BAND_JAPAN_LOW);
1772 modulator->rangehigh = WL1273_FREQ(WL1273_BAND_OTHER_HIGH);
1773
1774 modulator->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS |
1775 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS_BLOCK_IO;
1776
1777 if (core->mode != WL1273_MODE_TX)
1778 return 0;
1779
1780 if (mutex_lock_interruptible(&core->lock))
1781 return -EINTR;
1782
1783 r = core->read(core, WL1273_MONO_SET, &val);
1784 if (r)
1785 goto out;
1786
1787 if (val == WL1273_TX_STEREO)
1788 modulator->txsubchans = V4L2_TUNER_SUB_STEREO;
1789 else
1790 modulator->txsubchans = V4L2_TUNER_SUB_MONO;
1791
1792 if (radio->rds_on)
1793 modulator->txsubchans |= V4L2_TUNER_SUB_RDS;
1794 out:
1795 mutex_unlock(&core->lock);
1796
1797 return 0;
1798 }
1799
1800 static int wl1273_fm_vidioc_log_status(struct file *file, void *priv)
1801 {
1802 struct wl1273_device *radio = video_get_drvdata(video_devdata(file));
1803 struct wl1273_core *core = radio->core;
1804 struct device *dev = radio->dev;
1805 u16 val;
1806 int r;
1807
1808 dev_info(dev, DRIVER_DESC);
1809
1810 if (core->mode == WL1273_MODE_OFF) {
1811 dev_info(dev, "Mode: Off\n");
1812 return 0;
1813 }
1814
1815 if (core->mode == WL1273_MODE_SUSPENDED) {
1816 dev_info(dev, "Mode: Suspended\n");
1817 return 0;
1818 }
1819
1820 r = core->read(core, WL1273_ASIC_ID_GET, &val);
1821 if (r)
1822 dev_err(dev, "%s: Get ASIC_ID fails.\n", __func__);
1823 else
1824 dev_info(dev, "ASIC_ID: 0x%04x\n", val);
1825
1826 r = core->read(core, WL1273_ASIC_VER_GET, &val);
1827 if (r)
1828 dev_err(dev, "%s: Get ASIC_VER fails.\n", __func__);
1829 else
1830 dev_info(dev, "ASIC Version: 0x%04x\n", val);
1831
1832 r = core->read(core, WL1273_FIRM_VER_GET, &val);
1833 if (r)
1834 dev_err(dev, "%s: Get FIRM_VER fails.\n", __func__);
1835 else
1836 dev_info(dev, "FW version: %d(0x%04x)\n", val, val);
1837
1838 r = core->read(core, WL1273_BAND_SET, &val);
1839 if (r)
1840 dev_err(dev, "%s: Get BAND fails.\n", __func__);
1841 else
1842 dev_info(dev, "BAND: %d\n", val);
1843
1844 if (core->mode == WL1273_MODE_TX) {
1845 r = core->read(core, WL1273_PUPD_SET, &val);
1846 if (r)
1847 dev_err(dev, "%s: Get PUPD fails.\n", __func__);
1848 else
1849 dev_info(dev, "PUPD: 0x%04x\n", val);
1850
1851 r = core->read(core, WL1273_CHANL_SET, &val);
1852 if (r)
1853 dev_err(dev, "%s: Get CHANL fails.\n", __func__);
1854 else
1855 dev_info(dev, "Tx frequency: %dkHz\n", val*10);
1856 } else if (core->mode == WL1273_MODE_RX) {
1857 int bf = radio->rangelow;
1858
1859 r = core->read(core, WL1273_FREQ_SET, &val);
1860 if (r)
1861 dev_err(dev, "%s: Get FREQ fails.\n", __func__);
1862 else
1863 dev_info(dev, "RX Frequency: %dkHz\n", bf + val*50);
1864
1865 r = core->read(core, WL1273_MOST_MODE_SET, &val);
1866 if (r)
1867 dev_err(dev, "%s: Get MOST_MODE fails.\n",
1868 __func__);
1869 else if (val == 0)
1870 dev_info(dev, "MOST_MODE: Stereo according to blend\n");
1871 else if (val == 1)
1872 dev_info(dev, "MOST_MODE: Force mono output\n");
1873 else
1874 dev_info(dev, "MOST_MODE: Unexpected value: %d\n", val);
1875
1876 r = core->read(core, WL1273_MOST_BLEND_SET, &val);
1877 if (r)
1878 dev_err(dev, "%s: Get MOST_BLEND fails.\n", __func__);
1879 else if (val == 0)
1880 dev_info(dev,
1881 "MOST_BLEND: Switched blend & hysteresis.\n");
1882 else if (val == 1)
1883 dev_info(dev, "MOST_BLEND: Soft blend.\n");
1884 else
1885 dev_info(dev, "MOST_BLEND: Unexpected val: %d\n", val);
1886
1887 r = core->read(core, WL1273_STEREO_GET, &val);
1888 if (r)
1889 dev_err(dev, "%s: Get STEREO fails.\n", __func__);
1890 else if (val == 0)
1891 dev_info(dev, "STEREO: Not detected\n");
1892 else if (val == 1)
1893 dev_info(dev, "STEREO: Detected\n");
1894 else
1895 dev_info(dev, "STEREO: Unexpected value: %d\n", val);
1896
1897 r = core->read(core, WL1273_RSSI_LVL_GET, &val);
1898 if (r)
1899 dev_err(dev, "%s: Get RSSI_LVL fails.\n", __func__);
1900 else
1901 dev_info(dev, "RX signal strength: %d\n", (s16) val);
1902
1903 r = core->read(core, WL1273_POWER_SET, &val);
1904 if (r)
1905 dev_err(dev, "%s: Get POWER fails.\n", __func__);
1906 else
1907 dev_info(dev, "POWER: 0x%04x\n", val);
1908
1909 r = core->read(core, WL1273_INT_MASK_SET, &val);
1910 if (r)
1911 dev_err(dev, "%s: Get INT_MASK fails.\n", __func__);
1912 else
1913 dev_info(dev, "INT_MASK: 0x%04x\n", val);
1914
1915 r = core->read(core, WL1273_RDS_SYNC_GET, &val);
1916 if (r)
1917 dev_err(dev, "%s: Get RDS_SYNC fails.\n",
1918 __func__);
1919 else if (val == 0)
1920 dev_info(dev, "RDS_SYNC: Not synchronized\n");
1921
1922 else if (val == 1)
1923 dev_info(dev, "RDS_SYNC: Synchronized\n");
1924 else
1925 dev_info(dev, "RDS_SYNC: Unexpected value: %d\n", val);
1926
1927 r = core->read(core, WL1273_I2S_MODE_CONFIG_SET, &val);
1928 if (r)
1929 dev_err(dev, "%s: Get I2S_MODE_CONFIG fails.\n",
1930 __func__);
1931 else
1932 dev_info(dev, "I2S_MODE_CONFIG: 0x%04x\n", val);
1933
1934 r = core->read(core, WL1273_VOLUME_SET, &val);
1935 if (r)
1936 dev_err(dev, "%s: Get VOLUME fails.\n", __func__);
1937 else
1938 dev_info(dev, "VOLUME: 0x%04x\n", val);
1939 }
1940
1941 return 0;
1942 }
1943
1944 static void wl1273_vdev_release(struct video_device *dev)
1945 {
1946 }
1947
1948 static const struct v4l2_ctrl_ops wl1273_ctrl_ops = {
1949 .s_ctrl = wl1273_fm_vidioc_s_ctrl,
1950 .g_volatile_ctrl = wl1273_fm_g_volatile_ctrl,
1951 };
1952
1953 static const struct v4l2_ioctl_ops wl1273_ioctl_ops = {
1954 .vidioc_querycap = wl1273_fm_vidioc_querycap,
1955 .vidioc_g_input = wl1273_fm_vidioc_g_input,
1956 .vidioc_s_input = wl1273_fm_vidioc_s_input,
1957 .vidioc_g_audio = wl1273_fm_vidioc_g_audio,
1958 .vidioc_s_audio = wl1273_fm_vidioc_s_audio,
1959 .vidioc_g_tuner = wl1273_fm_vidioc_g_tuner,
1960 .vidioc_s_tuner = wl1273_fm_vidioc_s_tuner,
1961 .vidioc_g_frequency = wl1273_fm_vidioc_g_frequency,
1962 .vidioc_s_frequency = wl1273_fm_vidioc_s_frequency,
1963 .vidioc_s_hw_freq_seek = wl1273_fm_vidioc_s_hw_freq_seek,
1964 .vidioc_g_modulator = wl1273_fm_vidioc_g_modulator,
1965 .vidioc_s_modulator = wl1273_fm_vidioc_s_modulator,
1966 .vidioc_log_status = wl1273_fm_vidioc_log_status,
1967 };
1968
1969 static struct video_device wl1273_viddev_template = {
1970 .fops = &wl1273_fops,
1971 .ioctl_ops = &wl1273_ioctl_ops,
1972 .name = WL1273_FM_DRIVER_NAME,
1973 .release = wl1273_vdev_release,
1974 .vfl_dir = VFL_DIR_TX,
1975 };
1976
1977 static int wl1273_fm_radio_remove(struct platform_device *pdev)
1978 {
1979 struct wl1273_device *radio = platform_get_drvdata(pdev);
1980 struct wl1273_core *core = radio->core;
1981
1982 dev_info(&pdev->dev, "%s.\n", __func__);
1983
1984 free_irq(core->client->irq, radio);
1985 core->pdata->free_resources();
1986
1987 v4l2_ctrl_handler_free(&radio->ctrl_handler);
1988 video_unregister_device(&radio->videodev);
1989 v4l2_device_unregister(&radio->v4l2dev);
1990
1991 return 0;
1992 }
1993
1994 static int wl1273_fm_radio_probe(struct platform_device *pdev)
1995 {
1996 struct wl1273_core **core = pdev->dev.platform_data;
1997 struct wl1273_device *radio;
1998 struct v4l2_ctrl *ctrl;
1999 int r = 0;
2000
2001 pr_debug("%s\n", __func__);
2002
2003 if (!core) {
2004 dev_err(&pdev->dev, "No platform data.\n");
2005 r = -EINVAL;
2006 goto pdata_err;
2007 }
2008
2009 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
2010 if (!radio) {
2011 r = -ENOMEM;
2012 goto pdata_err;
2013 }
2014
2015 /* RDS buffer allocation */
2016 radio->buf_size = rds_buf * RDS_BLOCK_SIZE;
2017 radio->buffer = devm_kzalloc(&pdev->dev, radio->buf_size, GFP_KERNEL);
2018 if (!radio->buffer) {
2019 pr_err("Cannot allocate memory for RDS buffer.\n");
2020 r = -ENOMEM;
2021 goto pdata_err;
2022 }
2023
2024 radio->core = *core;
2025 radio->irq_flags = WL1273_IRQ_MASK;
2026 radio->dev = &radio->core->client->dev;
2027 radio->rds_on = false;
2028 radio->core->mode = WL1273_MODE_OFF;
2029 radio->tx_power = 118;
2030 radio->core->audio_mode = WL1273_AUDIO_ANALOG;
2031 radio->band = WL1273_BAND_OTHER;
2032 radio->core->i2s_mode = WL1273_I2S_DEF_MODE;
2033 radio->core->channel_number = 2;
2034 radio->core->volume = WL1273_DEFAULT_VOLUME;
2035 radio->rx_frequency = WL1273_BAND_OTHER_LOW;
2036 radio->tx_frequency = WL1273_BAND_OTHER_HIGH;
2037 radio->rangelow = WL1273_BAND_OTHER_LOW;
2038 radio->rangehigh = WL1273_BAND_OTHER_HIGH;
2039 radio->stereo = true;
2040 radio->bus_type = "I2C";
2041
2042 if (radio->core->pdata->request_resources) {
2043 r = radio->core->pdata->request_resources(radio->core->client);
2044 if (r) {
2045 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2046 ": Cannot get platform data\n");
2047 goto pdata_err;
2048 }
2049
2050 dev_dbg(radio->dev, "irq: %d\n", radio->core->client->irq);
2051
2052 r = request_threaded_irq(radio->core->client->irq, NULL,
2053 wl1273_fm_irq_thread_handler,
2054 IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
2055 "wl1273-fm", radio);
2056 if (r < 0) {
2057 dev_err(radio->dev, WL1273_FM_DRIVER_NAME
2058 ": Unable to register IRQ handler: %d\n", r);
2059 goto err_request_irq;
2060 }
2061 } else {
2062 dev_err(radio->dev, WL1273_FM_DRIVER_NAME ": Core WL1273 IRQ"
2063 " 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 = wl1273_fm_radio_remove,
2149 .driver = {
2150 .name = "wl1273_fm_radio",
2151 .owner = THIS_MODULE,
2152 },
2153 };
2154
2155 module_platform_driver(wl1273_fm_radio_driver);
2156
2157 MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
2158 MODULE_DESCRIPTION(DRIVER_DESC);
2159 MODULE_LICENSE("GPL");
2160 MODULE_ALIAS("platform:wl1273_fm_radio");
Linux with added FPC-III support