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[mirror_ubuntu-artful-kernel.git] / drivers / media / radio / wl128x / fmdrv_rx.c
CommitLineData
59da522a
MH		 1/*
2 * FM Driver for Connectivity chip of Texas Instruments.
3 * This sub-module of FM driver implements FM RX functionality.
4 *
5 * Copyright (C) 2011 Texas Instruments
6 * Author: Raja Mani <raja_mani@ti.com>
7 * Author: Manjunatha Halli <manjunatha_halli@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
59da522a
MH		 18 */
19
20#include "fmdrv.h"
21#include "fmdrv_common.h"
22#include "fmdrv_rx.h"
23
24void fm_rx_reset_rds_cache(struct fmdev *fmdev)
25{
26 fmdev->rx.rds.flag = FM_RDS_DISABLE;
27 fmdev->rx.rds.last_blk_idx = 0;
28 fmdev->rx.rds.wr_idx = 0;
29 fmdev->rx.rds.rd_idx = 0;
30
31 if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
32 fmdev->irq_info.mask |= FM_LEV_EVENT;
33}
34
35void fm_rx_reset_station_info(struct fmdev *fmdev)
36{
37 fmdev->rx.stat_info.picode = FM_NO_PI_CODE;
38 fmdev->rx.stat_info.afcache_size = 0;
39 fmdev->rx.stat_info.af_list_max = 0;
40}
41
d24674c6 42int fm_rx_set_freq(struct fmdev *fmdev, u32 freq)
59da522a
MH		 43{
44 unsigned long timeleft;
45 u16 payload, curr_frq, intr_flag;
46 u32 curr_frq_in_khz;
d24674c6
XW		 47 u32 resp_len;
48 int ret;
59da522a
MH		 49
50 if (freq < fmdev->rx.region.bot_freq || freq > fmdev->rx.region.top_freq) {
51 fmerr("Invalid frequency %d\n", freq);
52 return -EINVAL;
53 }
54
55 /* Set audio enable */
56 payload = FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG;
57
58 ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, REG_WR, &payload,
59 sizeof(payload), NULL, NULL);
60 if (ret < 0)
61 return ret;
62
63 /* Set hilo to automatic selection */
64 payload = FM_RX_IFFREQ_HILO_AUTOMATIC;
65 ret = fmc_send_cmd(fmdev, HILO_SET, REG_WR, &payload,
66 sizeof(payload), NULL, NULL);
67 if (ret < 0)
68 return ret;
69
70 /* Calculate frequency index and set*/
71 payload = (freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
72
73 ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
74 sizeof(payload), NULL, NULL);
75 if (ret < 0)
76 return ret;
77
78 /* Read flags - just to clear any pending interrupts if we had */
79 ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
80 if (ret < 0)
81 return ret;
82
83 /* Enable FR, BL interrupts */
84 intr_flag = fmdev->irq_info.mask;
85 fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
86 payload = fmdev->irq_info.mask;
87 ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
88 sizeof(payload), NULL, NULL);
89 if (ret < 0)
90 return ret;
91
92 /* Start tune */
93 payload = FM_TUNER_PRESET_MODE;
94 ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
95 sizeof(payload), NULL, NULL);
96 if (ret < 0)
97 goto exit;
98
99 /* Wait for tune ended interrupt */
100 init_completion(&fmdev->maintask_comp);
101 timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
102 FM_DRV_TX_TIMEOUT);
103 if (!timeleft) {
104 fmerr("Timeout(%d sec),didn't get tune ended int\n",
105 jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
106 ret = -ETIMEDOUT;
107 goto exit;
108 }
109
110 /* Read freq back to confirm */
111 ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, &curr_frq, &resp_len);
112 if (ret < 0)
113 goto exit;
114
2a8b7e58 115 curr_frq = be16_to_cpu((__force __be16)curr_frq);
59da522a
MH		 116 curr_frq_in_khz = (fmdev->rx.region.bot_freq + ((u32)curr_frq * FM_FREQ_MUL));
117
118 if (curr_frq_in_khz != freq) {
e84541f0
MCC		 119 pr_info("Frequency is set to (%d) but requested freq is (%d)\n",
120 curr_frq_in_khz, freq);
59da522a
MH		 121 }
122
123 /* Update local cache */
124 fmdev->rx.freq = curr_frq_in_khz;
125exit:
126 /* Re-enable default FM interrupts */
127 fmdev->irq_info.mask = intr_flag;
128 payload = fmdev->irq_info.mask;
129 ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
130 sizeof(payload), NULL, NULL);
131 if (ret < 0)
132 return ret;
133
134 /* Reset RDS cache and current station pointers */
135 fm_rx_reset_rds_cache(fmdev);
136 fm_rx_reset_station_info(fmdev);
137
138 return ret;
139}
140
d24674c6 141static int fm_rx_set_channel_spacing(struct fmdev *fmdev, u32 spacing)
59da522a
MH		 142{
143 u16 payload;
d24674c6 144 int ret;
59da522a
MH		 145
146 if (spacing > 0 && spacing <= 50000)
147 spacing = FM_CHANNEL_SPACING_50KHZ;
148 else if (spacing > 50000 && spacing <= 100000)
149 spacing = FM_CHANNEL_SPACING_100KHZ;
150 else
151 spacing = FM_CHANNEL_SPACING_200KHZ;
152
153 /* set channel spacing */
154 payload = spacing;
155 ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload,
156 sizeof(payload), NULL, NULL);
157 if (ret < 0)
158 return ret;
159
160 fmdev->rx.region.chanl_space = spacing * FM_FREQ_MUL;
161
162 return ret;
163}
164
d24674c6 165int fm_rx_seek(struct fmdev *fmdev, u32 seek_upward,
59da522a
MH		 166 u32 wrap_around, u32 spacing)
167{
168 u32 resp_len;
169 u16 curr_frq, next_frq, last_frq;
170 u16 payload, int_reason, intr_flag;
171 u16 offset, space_idx;
172 unsigned long timeleft;
d24674c6 173 int ret;
59da522a
MH		 174
175 /* Set channel spacing */
176 ret = fm_rx_set_channel_spacing(fmdev, spacing);
177 if (ret < 0) {
178 fmerr("Failed to set channel spacing\n");
179 return ret;
180 }
181
182 /* Read the current frequency from chip */
183 ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL,
184 sizeof(curr_frq), &curr_frq, &resp_len);
185 if (ret < 0)
186 return ret;
187
2a8b7e58 188 curr_frq = be16_to_cpu((__force __be16)curr_frq);
59da522a
MH		 189 last_frq = (fmdev->rx.region.top_freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
190
191 /* Check the offset in order to be aligned to the channel spacing*/
192 space_idx = fmdev->rx.region.chanl_space / FM_FREQ_MUL;
193 offset = curr_frq % space_idx;
194
195 next_frq = seek_upward ? curr_frq + space_idx /* Seek Up */ :
196 curr_frq - space_idx /* Seek Down */ ;
197
198 /*
199 * Add or subtract offset in order to stay aligned to the channel
200 * spacing.
201 */
202 if ((short)next_frq < 0)
203 next_frq = last_frq - offset;
204 else if (next_frq > last_frq)
205 next_frq = 0 + offset;
206
207again:
208 /* Set calculated next frequency to perform seek */
209 payload = next_frq;
210 ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
211 sizeof(payload), NULL, NULL);
212 if (ret < 0)
213 return ret;
214
215 /* Set search direction (0:Seek Down, 1:Seek Up) */
216 payload = (seek_upward ? FM_SEARCH_DIRECTION_UP : FM_SEARCH_DIRECTION_DOWN);
217 ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, REG_WR, &payload,
218 sizeof(payload), NULL, NULL);
219 if (ret < 0)
220 return ret;
221
222 /* Read flags - just to clear any pending interrupts if we had */
223 ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
224 if (ret < 0)
225 return ret;
226
227 /* Enable FR, BL interrupts */
228 intr_flag = fmdev->irq_info.mask;
229 fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
230 payload = fmdev->irq_info.mask;
231 ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
232 sizeof(payload), NULL, NULL);
233 if (ret < 0)
234 return ret;
235
236 /* Start seek */
237 payload = FM_TUNER_AUTONOMOUS_SEARCH_MODE;
238 ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
239 sizeof(payload), NULL, NULL);
240 if (ret < 0)
241 return ret;
242
243 /* Wait for tune ended/band limit reached interrupt */
244 init_completion(&fmdev->maintask_comp);
245 timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
246 FM_DRV_RX_SEEK_TIMEOUT);
247 if (!timeleft) {
248 fmerr("Timeout(%d sec),didn't get tune ended int\n",
249 jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
54f6019b 250 return -ENODATA;
59da522a
MH		 251 }
252
253 int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT);
254
255 /* Re-enable default FM interrupts */
256 fmdev->irq_info.mask = intr_flag;
257 payload = fmdev->irq_info.mask;
258 ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
259 sizeof(payload), NULL, NULL);
260 if (ret < 0)
261 return ret;
262
263 if (int_reason & FM_BL_EVENT) {
264 if (wrap_around == 0) {
265 fmdev->rx.freq = seek_upward ?
266 fmdev->rx.region.top_freq :
267 fmdev->rx.region.bot_freq;
268 } else {
269 fmdev->rx.freq = seek_upward ?
270 fmdev->rx.region.bot_freq :
271 fmdev->rx.region.top_freq;
272 /* Calculate frequency index to write */
273 next_frq = (fmdev->rx.freq -
274 fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
275 goto again;
276 }
277 } else {
278 /* Read freq to know where operation tune operation stopped */
279 ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2,
280 &curr_frq, &resp_len);
281 if (ret < 0)
282 return ret;
283
2a8b7e58 284 curr_frq = be16_to_cpu((__force __be16)curr_frq);
59da522a
MH		 285 fmdev->rx.freq = (fmdev->rx.region.bot_freq +
286 ((u32)curr_frq * FM_FREQ_MUL));
287
288 }
289 /* Reset RDS cache and current station pointers */
290 fm_rx_reset_rds_cache(fmdev);
291 fm_rx_reset_station_info(fmdev);
292
293 return ret;
294}
295
d24674c6 296int fm_rx_set_volume(struct fmdev *fmdev, u16 vol_to_set)
59da522a
MH		 297{
298 u16 payload;
d24674c6 299 int ret;
59da522a
MH		 300
301 if (fmdev->curr_fmmode != FM_MODE_RX)
302 return -EPERM;
303
5a3ef810 304 if (vol_to_set > FM_RX_VOLUME_MAX) {
59da522a
MH		 305 fmerr("Volume is not within(%d-%d) range\n",
306 FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX);
307 return -EINVAL;
308 }
309 vol_to_set *= FM_RX_VOLUME_GAIN_STEP;
310
311 payload = vol_to_set;
312 ret = fmc_send_cmd(fmdev, VOLUME_SET, REG_WR, &payload,
313 sizeof(payload), NULL, NULL);
314 if (ret < 0)
315 return ret;
316
317 fmdev->rx.volume = vol_to_set;
318 return ret;
319}
320
321/* Get volume */
d24674c6 322int fm_rx_get_volume(struct fmdev *fmdev, u16 *curr_vol)
59da522a
MH		 323{
324 if (fmdev->curr_fmmode != FM_MODE_RX)
325 return -EPERM;
326
327 if (curr_vol == NULL) {
328 fmerr("Invalid memory\n");
329 return -ENOMEM;
330 }
331
332 *curr_vol = fmdev->rx.volume / FM_RX_VOLUME_GAIN_STEP;
333
334 return 0;
335}
336
337/* To get current band's bottom and top frequency */
d24674c6 338int fm_rx_get_band_freq_range(struct fmdev *fmdev, u32 *bot_freq, u32 *top_freq)
59da522a
MH		 339{
340 if (bot_freq != NULL)
341 *bot_freq = fmdev->rx.region.bot_freq;
342
343 if (top_freq != NULL)
344 *top_freq = fmdev->rx.region.top_freq;
345
346 return 0;
347}
348
349/* Returns current band index (0-Europe/US; 1-Japan) */
350void fm_rx_get_region(struct fmdev *fmdev, u8 *region)
351{
352 *region = fmdev->rx.region.fm_band;
353}
354
355/* Sets band (0-Europe/US; 1-Japan) */
d24674c6 356int fm_rx_set_region(struct fmdev *fmdev, u8 region_to_set)
59da522a
MH		 357{
358 u16 payload;
359 u32 new_frq = 0;
d24674c6 360 int ret;
59da522a
MH		 361
362 if (region_to_set != FM_BAND_EUROPE_US &&
363 region_to_set != FM_BAND_JAPAN) {
364 fmerr("Invalid band\n");
365 return -EINVAL;
366 }
367
368 if (fmdev->rx.region.fm_band == region_to_set) {
369 fmerr("Requested band is already configured\n");
370 return 0;
371 }
372
373 /* Send cmd to set the band */
374 payload = (u16)region_to_set;
375 ret = fmc_send_cmd(fmdev, BAND_SET, REG_WR, &payload,
376 sizeof(payload), NULL, NULL);
377 if (ret < 0)
378 return ret;
379
380 fmc_update_region_info(fmdev, region_to_set);
381
382 /* Check whether current RX frequency is within band boundary */
383 if (fmdev->rx.freq < fmdev->rx.region.bot_freq)
384 new_frq = fmdev->rx.region.bot_freq;
385 else if (fmdev->rx.freq > fmdev->rx.region.top_freq)
386 new_frq = fmdev->rx.region.top_freq;
387
388 if (new_frq) {
e84541f0
MCC		 389 fmdbg("Current freq is not within band limit boundary,switching to %d KHz\n",
390 new_frq);
59da522a
MH		 391 /* Current RX frequency is not in range. So, update it */
392 ret = fm_rx_set_freq(fmdev, new_frq);
393 }
394
395 return ret;
396}
397
398/* Reads current mute mode (Mute Off/On/Attenuate)*/
d24674c6 399int fm_rx_get_mute_mode(struct fmdev *fmdev, u8 *curr_mute_mode)
59da522a
MH		 400{
401 if (fmdev->curr_fmmode != FM_MODE_RX)
402 return -EPERM;
403
404 if (curr_mute_mode == NULL) {
405 fmerr("Invalid memory\n");
406 return -ENOMEM;
407 }
408
409 *curr_mute_mode = fmdev->rx.mute_mode;
410
411 return 0;
412}
413
d24674c6 414static int fm_config_rx_mute_reg(struct fmdev *fmdev)
59da522a
MH		 415{
416 u16 payload, muteval;
d24674c6 417 int ret;
59da522a
MH		 418
419 muteval = 0;
420 switch (fmdev->rx.mute_mode) {
421 case FM_MUTE_ON:
422 muteval = FM_RX_AC_MUTE_MODE;
423 break;
424
425 case FM_MUTE_OFF:
426 muteval = FM_RX_UNMUTE_MODE;
427 break;
428
429 case FM_MUTE_ATTENUATE:
430 muteval = FM_RX_SOFT_MUTE_FORCE_MODE;
431 break;
432 }
433 if (fmdev->rx.rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON)
434 muteval |= FM_RX_RF_DEP_MODE;
435 else
436 muteval &= ~FM_RX_RF_DEP_MODE;
437
438 payload = muteval;
439 ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, REG_WR, &payload,
440 sizeof(payload), NULL, NULL);
441 if (ret < 0)
442 return ret;
443
444 return 0;
445}
446
447/* Configures mute mode (Mute Off/On/Attenuate) */
d24674c6 448int fm_rx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset)
59da522a
MH		 449{
450 u8 org_state;
d24674c6 451 int ret;
59da522a
MH		 452
453 if (fmdev->rx.mute_mode == mute_mode_toset)
454 return 0;
455
456 org_state = fmdev->rx.mute_mode;
457 fmdev->rx.mute_mode = mute_mode_toset;
458
459 ret = fm_config_rx_mute_reg(fmdev);
460 if (ret < 0) {
461 fmdev->rx.mute_mode = org_state;
462 return ret;
463 }
464
465 return 0;
466}
467
468/* Gets RF dependent soft mute mode enable/disable status */
d24674c6 469int fm_rx_get_rfdepend_softmute(struct fmdev *fmdev, u8 *curr_mute_mode)
59da522a
MH		 470{
471 if (fmdev->curr_fmmode != FM_MODE_RX)
472 return -EPERM;
473
474 if (curr_mute_mode == NULL) {
475 fmerr("Invalid memory\n");
476 return -ENOMEM;
477 }
478
479 *curr_mute_mode = fmdev->rx.rf_depend_mute;
480
481 return 0;
482}
483
484/* Sets RF dependent soft mute mode */
d24674c6 485int fm_rx_set_rfdepend_softmute(struct fmdev *fmdev, u8 rfdepend_mute)
59da522a
MH		 486{
487 u8 org_state;
d24674c6 488 int ret;
59da522a
MH		 489
490 if (fmdev->curr_fmmode != FM_MODE_RX)
491 return -EPERM;
492
493 if (rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_ON &&
494 rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_OFF) {
495 fmerr("Invalid RF dependent soft mute\n");
496 return -EINVAL;
497 }
498 if (fmdev->rx.rf_depend_mute == rfdepend_mute)
499 return 0;
500
501 org_state = fmdev->rx.rf_depend_mute;
502 fmdev->rx.rf_depend_mute = rfdepend_mute;
503
504 ret = fm_config_rx_mute_reg(fmdev);
505 if (ret < 0) {
506 fmdev->rx.rf_depend_mute = org_state;
507 return ret;
508 }
509
510 return 0;
511}
512
513/* Returns the signal strength level of current channel */
d24674c6 514int fm_rx_get_rssi_level(struct fmdev *fmdev, u16 *rssilvl)
59da522a 515{
2a8b7e58 516 __be16 curr_rssi_lel;
59da522a 517 u32 resp_len;
d24674c6 518 int ret;
59da522a
MH		 519
520 if (rssilvl == NULL) {
521 fmerr("Invalid memory\n");
522 return -ENOMEM;
523 }
524 /* Read current RSSI level */
525 ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, REG_RD, NULL, 2,
526 &curr_rssi_lel, &resp_len);
527 if (ret < 0)
528 return ret;
529
530 *rssilvl = be16_to_cpu(curr_rssi_lel);
531
532 return 0;
533}
534
535/*
536 * Sets the signal strength level that once reached
537 * will stop the auto search process
538 */
d24674c6 539int fm_rx_set_rssi_threshold(struct fmdev *fmdev, short rssi_lvl_toset)
59da522a
MH		 540{
541 u16 payload;
d24674c6 542 int ret;
59da522a
MH		 543
544 if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN ||
545 rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) {
546 fmerr("Invalid RSSI threshold level\n");
547 return -EINVAL;
548 }
549 payload = (u16)rssi_lvl_toset;
550 ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, REG_WR, &payload,
551 sizeof(payload), NULL, NULL);
552 if (ret < 0)
553 return ret;
554
555 fmdev->rx.rssi_threshold = rssi_lvl_toset;
556
557 return 0;
558}
559
560/* Returns current RX RSSI threshold value */
d24674c6 561int fm_rx_get_rssi_threshold(struct fmdev *fmdev, short *curr_rssi_lvl)
59da522a
MH		 562{
563 if (fmdev->curr_fmmode != FM_MODE_RX)
564 return -EPERM;
565
566 if (curr_rssi_lvl == NULL) {
567 fmerr("Invalid memory\n");
568 return -ENOMEM;
569 }
570
571 *curr_rssi_lvl = fmdev->rx.rssi_threshold;
572
573 return 0;
574}
575
576/* Sets RX stereo/mono modes */
d24674c6 577int fm_rx_set_stereo_mono(struct fmdev *fmdev, u16 mode)
59da522a
MH		 578{
579 u16 payload;
d24674c6 580 int ret;
59da522a
MH		 581
582 if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) {
583 fmerr("Invalid mode\n");
584 return -EINVAL;
585 }
586
587 /* Set stereo/mono mode */
588 payload = (u16)mode;
589 ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_WR, &payload,
590 sizeof(payload), NULL, NULL);
591 if (ret < 0)
592 return ret;
593
594 /* Set stereo blending mode */
595 payload = FM_STEREO_SOFT_BLEND;
596 ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, REG_WR, &payload,
597 sizeof(payload), NULL, NULL);
598 if (ret < 0)
599 return ret;
600
601 return 0;
602}
603
604/* Gets current RX stereo/mono mode */
d24674c6 605int fm_rx_get_stereo_mono(struct fmdev *fmdev, u16 *mode)
59da522a 606{
2a8b7e58 607 __be16 curr_mode;
d24674c6
XW		 608 u32 resp_len;
609 int ret;
59da522a
MH		 610
611 if (mode == NULL) {
612 fmerr("Invalid memory\n");
613 return -ENOMEM;
614 }
615
616 ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_RD, NULL, 2,
617 &curr_mode, &resp_len);
618 if (ret < 0)
619 return ret;
620
621 *mode = be16_to_cpu(curr_mode);
622
623 return 0;
624}
625
626/* Choose RX de-emphasis filter mode (50us/75us) */
d24674c6 627int fm_rx_set_deemphasis_mode(struct fmdev *fmdev, u16 mode)
59da522a
MH		 628{
629 u16 payload;
d24674c6 630 int ret;
59da522a
MH		 631
632 if (fmdev->curr_fmmode != FM_MODE_RX)
633 return -EPERM;
634
635 if (mode != FM_RX_EMPHASIS_FILTER_50_USEC &&
636 mode != FM_RX_EMPHASIS_FILTER_75_USEC) {
637 fmerr("Invalid rx de-emphasis mode (%d)\n", mode);
638 return -EINVAL;
639 }
640
641 payload = mode;
642 ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, REG_WR, &payload,
643 sizeof(payload), NULL, NULL);
644 if (ret < 0)
645 return ret;
646
647 fmdev->rx.deemphasis_mode = mode;
648
649 return 0;
650}
651
652/* Gets current RX de-emphasis filter mode */
d24674c6 653int fm_rx_get_deemph_mode(struct fmdev *fmdev, u16 *curr_deemphasis_mode)
59da522a
MH		 654{
655 if (fmdev->curr_fmmode != FM_MODE_RX)
656 return -EPERM;
657
658 if (curr_deemphasis_mode == NULL) {
659 fmerr("Invalid memory\n");
660 return -ENOMEM;
661 }
662
663 *curr_deemphasis_mode = fmdev->rx.deemphasis_mode;
664
665 return 0;
666}
667
668/* Enable/Disable RX RDS */
d24674c6 669int fm_rx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
59da522a
MH		 670{
671 u16 payload;
d24674c6 672 int ret;
59da522a
MH		 673
674 if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) {
675 fmerr("Invalid rds option\n");
676 return -EINVAL;
677 }
678
679 if (rds_en_dis == FM_RDS_ENABLE
680 && fmdev->rx.rds.flag == FM_RDS_DISABLE) {
681 /* Turn on RX RDS and RDS circuit */
682 payload = FM_RX_PWR_SET_FM_AND_RDS_BLK_ON;
683 ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
684 sizeof(payload), NULL, NULL);
685 if (ret < 0)
686 return ret;
687
688 /* Clear and reset RDS FIFO */
689 payload = FM_RX_RDS_FLUSH_FIFO;
690 ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, REG_WR, &payload,
691 sizeof(payload), NULL, NULL);
692 if (ret < 0)
693 return ret;
694
695 /* Read flags - just to clear any pending interrupts. */
696 ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2,
697 NULL, NULL);
698 if (ret < 0)
699 return ret;
700
701 /* Set RDS FIFO threshold value */
702 payload = FM_RX_RDS_FIFO_THRESHOLD;
703 ret = fmc_send_cmd(fmdev, RDS_MEM_SET, REG_WR, &payload,
704 sizeof(payload), NULL, NULL);
705 if (ret < 0)
706 return ret;
707
708 /* Enable RDS interrupt */
709 fmdev->irq_info.mask |= FM_RDS_EVENT;
710 payload = fmdev->irq_info.mask;
711 ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
712 sizeof(payload), NULL, NULL);
713 if (ret < 0) {
714 fmdev->irq_info.mask &= ~FM_RDS_EVENT;
715 return ret;
716 }
717
718 /* Update our local flag */
719 fmdev->rx.rds.flag = FM_RDS_ENABLE;
720 } else if (rds_en_dis == FM_RDS_DISABLE
721 && fmdev->rx.rds.flag == FM_RDS_ENABLE) {
722 /* Turn off RX RDS */
723 payload = FM_RX_PWR_SET_FM_ON_RDS_OFF;
724 ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
725 sizeof(payload), NULL, NULL);
726 if (ret < 0)
727 return ret;
728
729 /* Reset RDS pointers */
730 fmdev->rx.rds.last_blk_idx = 0;
731 fmdev->rx.rds.wr_idx = 0;
732 fmdev->rx.rds.rd_idx = 0;
733 fm_rx_reset_station_info(fmdev);
734
735 /* Update RDS local cache */
736 fmdev->irq_info.mask &= ~(FM_RDS_EVENT);
737 fmdev->rx.rds.flag = FM_RDS_DISABLE;
738 }
739
740 return 0;
741}
742
743/* Returns current RX RDS enable/disable status */
d24674c6 744int fm_rx_get_rds_mode(struct fmdev *fmdev, u8 *curr_rds_en_dis)
59da522a
MH		 745{
746 if (fmdev->curr_fmmode != FM_MODE_RX)
747 return -EPERM;
748
749 if (curr_rds_en_dis == NULL) {
750 fmerr("Invalid memory\n");
751 return -ENOMEM;
752 }
753
754 *curr_rds_en_dis = fmdev->rx.rds.flag;
755
756 return 0;
757}
758
759/* Sets RDS operation mode (RDS/RDBS) */
d24674c6 760int fm_rx_set_rds_system(struct fmdev *fmdev, u8 rds_mode)
59da522a
MH		 761{
762 u16 payload;
d24674c6 763 int ret;
59da522a
MH		 764
765 if (fmdev->curr_fmmode != FM_MODE_RX)
766 return -EPERM;
767
768 if (rds_mode != FM_RDS_SYSTEM_RDS && rds_mode != FM_RDS_SYSTEM_RBDS) {
769 fmerr("Invalid rds mode\n");
770 return -EINVAL;
771 }
772 /* Set RDS operation mode */
773 payload = (u16)rds_mode;
774 ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, REG_WR, &payload,
775 sizeof(payload), NULL, NULL);
776 if (ret < 0)
777 return ret;
778
779 fmdev->rx.rds_mode = rds_mode;
780
59da522a
MH		 781 return 0;
782}
783
784/* Configures Alternate Frequency switch mode */
d24674c6 785int fm_rx_set_af_switch(struct fmdev *fmdev, u8 af_mode)
59da522a
MH		 786{
787 u16 payload;
d24674c6 788 int ret;
59da522a
MH		 789
790 if (fmdev->curr_fmmode != FM_MODE_RX)
791 return -EPERM;
792
793 if (af_mode != FM_RX_RDS_AF_SWITCH_MODE_ON &&
794 af_mode != FM_RX_RDS_AF_SWITCH_MODE_OFF) {
795 fmerr("Invalid af mode\n");
796 return -EINVAL;
797 }
798 /* Enable/disable low RSSI interrupt based on af_mode */
799 if (af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
800 fmdev->irq_info.mask |= FM_LEV_EVENT;
801 else
802 fmdev->irq_info.mask &= ~FM_LEV_EVENT;
803
804 payload = fmdev->irq_info.mask;
805 ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
806 sizeof(payload), NULL, NULL);
807 if (ret < 0)
808 return ret;
809
810 fmdev->rx.af_mode = af_mode;
811
812 return 0;
813}
814
815/* Returns Alternate Frequency switch status */
d24674c6 816int fm_rx_get_af_switch(struct fmdev *fmdev, u8 *af_mode)
59da522a
MH		 817{
818 if (fmdev->curr_fmmode != FM_MODE_RX)
819 return -EPERM;
820
821 if (af_mode == NULL) {
822 fmerr("Invalid memory\n");
823 return -ENOMEM;
824 }
825
826 *af_mode = fmdev->rx.af_mode;
827
828 return 0;
829}
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