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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 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include "fmdrv.h" | |
25 | #include "fmdrv_common.h" | |
26 | #include "fmdrv_rx.h" | |
27 | ||
28 | void fm_rx_reset_rds_cache(struct fmdev *fmdev) | |
29 | { | |
30 | fmdev->rx.rds.flag = FM_RDS_DISABLE; | |
31 | fmdev->rx.rds.last_blk_idx = 0; | |
32 | fmdev->rx.rds.wr_idx = 0; | |
33 | fmdev->rx.rds.rd_idx = 0; | |
34 | ||
35 | if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) | |
36 | fmdev->irq_info.mask |= FM_LEV_EVENT; | |
37 | } | |
38 | ||
39 | void fm_rx_reset_station_info(struct fmdev *fmdev) | |
40 | { | |
41 | fmdev->rx.stat_info.picode = FM_NO_PI_CODE; | |
42 | fmdev->rx.stat_info.afcache_size = 0; | |
43 | fmdev->rx.stat_info.af_list_max = 0; | |
44 | } | |
45 | ||
d24674c6 | 46 | int fm_rx_set_freq(struct fmdev *fmdev, u32 freq) |
59da522a MH |
47 | { |
48 | unsigned long timeleft; | |
49 | u16 payload, curr_frq, intr_flag; | |
50 | u32 curr_frq_in_khz; | |
d24674c6 XW |
51 | u32 resp_len; |
52 | int ret; | |
59da522a MH |
53 | |
54 | if (freq < fmdev->rx.region.bot_freq || freq > fmdev->rx.region.top_freq) { | |
55 | fmerr("Invalid frequency %d\n", freq); | |
56 | return -EINVAL; | |
57 | } | |
58 | ||
59 | /* Set audio enable */ | |
60 | payload = FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG; | |
61 | ||
62 | ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, REG_WR, &payload, | |
63 | sizeof(payload), NULL, NULL); | |
64 | if (ret < 0) | |
65 | return ret; | |
66 | ||
67 | /* Set hilo to automatic selection */ | |
68 | payload = FM_RX_IFFREQ_HILO_AUTOMATIC; | |
69 | ret = fmc_send_cmd(fmdev, HILO_SET, REG_WR, &payload, | |
70 | sizeof(payload), NULL, NULL); | |
71 | if (ret < 0) | |
72 | return ret; | |
73 | ||
74 | /* Calculate frequency index and set*/ | |
75 | payload = (freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL; | |
76 | ||
77 | ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload, | |
78 | sizeof(payload), NULL, NULL); | |
79 | if (ret < 0) | |
80 | return ret; | |
81 | ||
82 | /* Read flags - just to clear any pending interrupts if we had */ | |
83 | ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL); | |
84 | if (ret < 0) | |
85 | return ret; | |
86 | ||
87 | /* Enable FR, BL interrupts */ | |
88 | intr_flag = fmdev->irq_info.mask; | |
89 | fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT); | |
90 | payload = fmdev->irq_info.mask; | |
91 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
92 | sizeof(payload), NULL, NULL); | |
93 | if (ret < 0) | |
94 | return ret; | |
95 | ||
96 | /* Start tune */ | |
97 | payload = FM_TUNER_PRESET_MODE; | |
98 | ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload, | |
99 | sizeof(payload), NULL, NULL); | |
100 | if (ret < 0) | |
101 | goto exit; | |
102 | ||
103 | /* Wait for tune ended interrupt */ | |
104 | init_completion(&fmdev->maintask_comp); | |
105 | timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, | |
106 | FM_DRV_TX_TIMEOUT); | |
107 | if (!timeleft) { | |
108 | fmerr("Timeout(%d sec),didn't get tune ended int\n", | |
109 | jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000); | |
110 | ret = -ETIMEDOUT; | |
111 | goto exit; | |
112 | } | |
113 | ||
114 | /* Read freq back to confirm */ | |
115 | ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, &curr_frq, &resp_len); | |
116 | if (ret < 0) | |
117 | goto exit; | |
118 | ||
119 | curr_frq = be16_to_cpu(curr_frq); | |
120 | curr_frq_in_khz = (fmdev->rx.region.bot_freq + ((u32)curr_frq * FM_FREQ_MUL)); | |
121 | ||
122 | if (curr_frq_in_khz != freq) { | |
123 | pr_info("Frequency is set to (%d) but " | |
124 | "requested freq is (%d)\n", curr_frq_in_khz, freq); | |
125 | } | |
126 | ||
127 | /* Update local cache */ | |
128 | fmdev->rx.freq = curr_frq_in_khz; | |
129 | exit: | |
130 | /* Re-enable default FM interrupts */ | |
131 | fmdev->irq_info.mask = intr_flag; | |
132 | payload = fmdev->irq_info.mask; | |
133 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
134 | sizeof(payload), NULL, NULL); | |
135 | if (ret < 0) | |
136 | return ret; | |
137 | ||
138 | /* Reset RDS cache and current station pointers */ | |
139 | fm_rx_reset_rds_cache(fmdev); | |
140 | fm_rx_reset_station_info(fmdev); | |
141 | ||
142 | return ret; | |
143 | } | |
144 | ||
d24674c6 | 145 | static int fm_rx_set_channel_spacing(struct fmdev *fmdev, u32 spacing) |
59da522a MH |
146 | { |
147 | u16 payload; | |
d24674c6 | 148 | int ret; |
59da522a MH |
149 | |
150 | if (spacing > 0 && spacing <= 50000) | |
151 | spacing = FM_CHANNEL_SPACING_50KHZ; | |
152 | else if (spacing > 50000 && spacing <= 100000) | |
153 | spacing = FM_CHANNEL_SPACING_100KHZ; | |
154 | else | |
155 | spacing = FM_CHANNEL_SPACING_200KHZ; | |
156 | ||
157 | /* set channel spacing */ | |
158 | payload = spacing; | |
159 | ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload, | |
160 | sizeof(payload), NULL, NULL); | |
161 | if (ret < 0) | |
162 | return ret; | |
163 | ||
164 | fmdev->rx.region.chanl_space = spacing * FM_FREQ_MUL; | |
165 | ||
166 | return ret; | |
167 | } | |
168 | ||
d24674c6 | 169 | int fm_rx_seek(struct fmdev *fmdev, u32 seek_upward, |
59da522a MH |
170 | u32 wrap_around, u32 spacing) |
171 | { | |
172 | u32 resp_len; | |
173 | u16 curr_frq, next_frq, last_frq; | |
174 | u16 payload, int_reason, intr_flag; | |
175 | u16 offset, space_idx; | |
176 | unsigned long timeleft; | |
d24674c6 | 177 | int ret; |
59da522a MH |
178 | |
179 | /* Set channel spacing */ | |
180 | ret = fm_rx_set_channel_spacing(fmdev, spacing); | |
181 | if (ret < 0) { | |
182 | fmerr("Failed to set channel spacing\n"); | |
183 | return ret; | |
184 | } | |
185 | ||
186 | /* Read the current frequency from chip */ | |
187 | ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, | |
188 | sizeof(curr_frq), &curr_frq, &resp_len); | |
189 | if (ret < 0) | |
190 | return ret; | |
191 | ||
192 | curr_frq = be16_to_cpu(curr_frq); | |
193 | last_frq = (fmdev->rx.region.top_freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL; | |
194 | ||
195 | /* Check the offset in order to be aligned to the channel spacing*/ | |
196 | space_idx = fmdev->rx.region.chanl_space / FM_FREQ_MUL; | |
197 | offset = curr_frq % space_idx; | |
198 | ||
199 | next_frq = seek_upward ? curr_frq + space_idx /* Seek Up */ : | |
200 | curr_frq - space_idx /* Seek Down */ ; | |
201 | ||
202 | /* | |
203 | * Add or subtract offset in order to stay aligned to the channel | |
204 | * spacing. | |
205 | */ | |
206 | if ((short)next_frq < 0) | |
207 | next_frq = last_frq - offset; | |
208 | else if (next_frq > last_frq) | |
209 | next_frq = 0 + offset; | |
210 | ||
211 | again: | |
212 | /* Set calculated next frequency to perform seek */ | |
213 | payload = next_frq; | |
214 | ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload, | |
215 | sizeof(payload), NULL, NULL); | |
216 | if (ret < 0) | |
217 | return ret; | |
218 | ||
219 | /* Set search direction (0:Seek Down, 1:Seek Up) */ | |
220 | payload = (seek_upward ? FM_SEARCH_DIRECTION_UP : FM_SEARCH_DIRECTION_DOWN); | |
221 | ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, REG_WR, &payload, | |
222 | sizeof(payload), NULL, NULL); | |
223 | if (ret < 0) | |
224 | return ret; | |
225 | ||
226 | /* Read flags - just to clear any pending interrupts if we had */ | |
227 | ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL); | |
228 | if (ret < 0) | |
229 | return ret; | |
230 | ||
231 | /* Enable FR, BL interrupts */ | |
232 | intr_flag = fmdev->irq_info.mask; | |
233 | fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT); | |
234 | payload = fmdev->irq_info.mask; | |
235 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
236 | sizeof(payload), NULL, NULL); | |
237 | if (ret < 0) | |
238 | return ret; | |
239 | ||
240 | /* Start seek */ | |
241 | payload = FM_TUNER_AUTONOMOUS_SEARCH_MODE; | |
242 | ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload, | |
243 | sizeof(payload), NULL, NULL); | |
244 | if (ret < 0) | |
245 | return ret; | |
246 | ||
247 | /* Wait for tune ended/band limit reached interrupt */ | |
248 | init_completion(&fmdev->maintask_comp); | |
249 | timeleft = wait_for_completion_timeout(&fmdev->maintask_comp, | |
250 | FM_DRV_RX_SEEK_TIMEOUT); | |
251 | if (!timeleft) { | |
252 | fmerr("Timeout(%d sec),didn't get tune ended int\n", | |
253 | jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000); | |
54f6019b | 254 | return -ENODATA; |
59da522a MH |
255 | } |
256 | ||
257 | int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT); | |
258 | ||
259 | /* Re-enable default FM interrupts */ | |
260 | fmdev->irq_info.mask = intr_flag; | |
261 | payload = fmdev->irq_info.mask; | |
262 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
263 | sizeof(payload), NULL, NULL); | |
264 | if (ret < 0) | |
265 | return ret; | |
266 | ||
267 | if (int_reason & FM_BL_EVENT) { | |
268 | if (wrap_around == 0) { | |
269 | fmdev->rx.freq = seek_upward ? | |
270 | fmdev->rx.region.top_freq : | |
271 | fmdev->rx.region.bot_freq; | |
272 | } else { | |
273 | fmdev->rx.freq = seek_upward ? | |
274 | fmdev->rx.region.bot_freq : | |
275 | fmdev->rx.region.top_freq; | |
276 | /* Calculate frequency index to write */ | |
277 | next_frq = (fmdev->rx.freq - | |
278 | fmdev->rx.region.bot_freq) / FM_FREQ_MUL; | |
279 | goto again; | |
280 | } | |
281 | } else { | |
282 | /* Read freq to know where operation tune operation stopped */ | |
283 | ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, | |
284 | &curr_frq, &resp_len); | |
285 | if (ret < 0) | |
286 | return ret; | |
287 | ||
288 | curr_frq = be16_to_cpu(curr_frq); | |
289 | fmdev->rx.freq = (fmdev->rx.region.bot_freq + | |
290 | ((u32)curr_frq * FM_FREQ_MUL)); | |
291 | ||
292 | } | |
293 | /* Reset RDS cache and current station pointers */ | |
294 | fm_rx_reset_rds_cache(fmdev); | |
295 | fm_rx_reset_station_info(fmdev); | |
296 | ||
297 | return ret; | |
298 | } | |
299 | ||
d24674c6 | 300 | int fm_rx_set_volume(struct fmdev *fmdev, u16 vol_to_set) |
59da522a MH |
301 | { |
302 | u16 payload; | |
d24674c6 | 303 | int ret; |
59da522a MH |
304 | |
305 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
306 | return -EPERM; | |
307 | ||
5a3ef810 | 308 | if (vol_to_set > FM_RX_VOLUME_MAX) { |
59da522a MH |
309 | fmerr("Volume is not within(%d-%d) range\n", |
310 | FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX); | |
311 | return -EINVAL; | |
312 | } | |
313 | vol_to_set *= FM_RX_VOLUME_GAIN_STEP; | |
314 | ||
315 | payload = vol_to_set; | |
316 | ret = fmc_send_cmd(fmdev, VOLUME_SET, REG_WR, &payload, | |
317 | sizeof(payload), NULL, NULL); | |
318 | if (ret < 0) | |
319 | return ret; | |
320 | ||
321 | fmdev->rx.volume = vol_to_set; | |
322 | return ret; | |
323 | } | |
324 | ||
325 | /* Get volume */ | |
d24674c6 | 326 | int fm_rx_get_volume(struct fmdev *fmdev, u16 *curr_vol) |
59da522a MH |
327 | { |
328 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
329 | return -EPERM; | |
330 | ||
331 | if (curr_vol == NULL) { | |
332 | fmerr("Invalid memory\n"); | |
333 | return -ENOMEM; | |
334 | } | |
335 | ||
336 | *curr_vol = fmdev->rx.volume / FM_RX_VOLUME_GAIN_STEP; | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | /* To get current band's bottom and top frequency */ | |
d24674c6 | 342 | int fm_rx_get_band_freq_range(struct fmdev *fmdev, u32 *bot_freq, u32 *top_freq) |
59da522a MH |
343 | { |
344 | if (bot_freq != NULL) | |
345 | *bot_freq = fmdev->rx.region.bot_freq; | |
346 | ||
347 | if (top_freq != NULL) | |
348 | *top_freq = fmdev->rx.region.top_freq; | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | /* Returns current band index (0-Europe/US; 1-Japan) */ | |
354 | void fm_rx_get_region(struct fmdev *fmdev, u8 *region) | |
355 | { | |
356 | *region = fmdev->rx.region.fm_band; | |
357 | } | |
358 | ||
359 | /* Sets band (0-Europe/US; 1-Japan) */ | |
d24674c6 | 360 | int fm_rx_set_region(struct fmdev *fmdev, u8 region_to_set) |
59da522a MH |
361 | { |
362 | u16 payload; | |
363 | u32 new_frq = 0; | |
d24674c6 | 364 | int ret; |
59da522a MH |
365 | |
366 | if (region_to_set != FM_BAND_EUROPE_US && | |
367 | region_to_set != FM_BAND_JAPAN) { | |
368 | fmerr("Invalid band\n"); | |
369 | return -EINVAL; | |
370 | } | |
371 | ||
372 | if (fmdev->rx.region.fm_band == region_to_set) { | |
373 | fmerr("Requested band is already configured\n"); | |
374 | return 0; | |
375 | } | |
376 | ||
377 | /* Send cmd to set the band */ | |
378 | payload = (u16)region_to_set; | |
379 | ret = fmc_send_cmd(fmdev, BAND_SET, REG_WR, &payload, | |
380 | sizeof(payload), NULL, NULL); | |
381 | if (ret < 0) | |
382 | return ret; | |
383 | ||
384 | fmc_update_region_info(fmdev, region_to_set); | |
385 | ||
386 | /* Check whether current RX frequency is within band boundary */ | |
387 | if (fmdev->rx.freq < fmdev->rx.region.bot_freq) | |
388 | new_frq = fmdev->rx.region.bot_freq; | |
389 | else if (fmdev->rx.freq > fmdev->rx.region.top_freq) | |
390 | new_frq = fmdev->rx.region.top_freq; | |
391 | ||
392 | if (new_frq) { | |
393 | fmdbg("Current freq is not within band limit boundary," | |
394 | "switching to %d KHz\n", new_frq); | |
395 | /* Current RX frequency is not in range. So, update it */ | |
396 | ret = fm_rx_set_freq(fmdev, new_frq); | |
397 | } | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
402 | /* Reads current mute mode (Mute Off/On/Attenuate)*/ | |
d24674c6 | 403 | int fm_rx_get_mute_mode(struct fmdev *fmdev, u8 *curr_mute_mode) |
59da522a MH |
404 | { |
405 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
406 | return -EPERM; | |
407 | ||
408 | if (curr_mute_mode == NULL) { | |
409 | fmerr("Invalid memory\n"); | |
410 | return -ENOMEM; | |
411 | } | |
412 | ||
413 | *curr_mute_mode = fmdev->rx.mute_mode; | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
d24674c6 | 418 | static int fm_config_rx_mute_reg(struct fmdev *fmdev) |
59da522a MH |
419 | { |
420 | u16 payload, muteval; | |
d24674c6 | 421 | int ret; |
59da522a MH |
422 | |
423 | muteval = 0; | |
424 | switch (fmdev->rx.mute_mode) { | |
425 | case FM_MUTE_ON: | |
426 | muteval = FM_RX_AC_MUTE_MODE; | |
427 | break; | |
428 | ||
429 | case FM_MUTE_OFF: | |
430 | muteval = FM_RX_UNMUTE_MODE; | |
431 | break; | |
432 | ||
433 | case FM_MUTE_ATTENUATE: | |
434 | muteval = FM_RX_SOFT_MUTE_FORCE_MODE; | |
435 | break; | |
436 | } | |
437 | if (fmdev->rx.rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON) | |
438 | muteval |= FM_RX_RF_DEP_MODE; | |
439 | else | |
440 | muteval &= ~FM_RX_RF_DEP_MODE; | |
441 | ||
442 | payload = muteval; | |
443 | ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, REG_WR, &payload, | |
444 | sizeof(payload), NULL, NULL); | |
445 | if (ret < 0) | |
446 | return ret; | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | /* Configures mute mode (Mute Off/On/Attenuate) */ | |
d24674c6 | 452 | int fm_rx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset) |
59da522a MH |
453 | { |
454 | u8 org_state; | |
d24674c6 | 455 | int ret; |
59da522a MH |
456 | |
457 | if (fmdev->rx.mute_mode == mute_mode_toset) | |
458 | return 0; | |
459 | ||
460 | org_state = fmdev->rx.mute_mode; | |
461 | fmdev->rx.mute_mode = mute_mode_toset; | |
462 | ||
463 | ret = fm_config_rx_mute_reg(fmdev); | |
464 | if (ret < 0) { | |
465 | fmdev->rx.mute_mode = org_state; | |
466 | return ret; | |
467 | } | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | /* Gets RF dependent soft mute mode enable/disable status */ | |
d24674c6 | 473 | int fm_rx_get_rfdepend_softmute(struct fmdev *fmdev, u8 *curr_mute_mode) |
59da522a MH |
474 | { |
475 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
476 | return -EPERM; | |
477 | ||
478 | if (curr_mute_mode == NULL) { | |
479 | fmerr("Invalid memory\n"); | |
480 | return -ENOMEM; | |
481 | } | |
482 | ||
483 | *curr_mute_mode = fmdev->rx.rf_depend_mute; | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
488 | /* Sets RF dependent soft mute mode */ | |
d24674c6 | 489 | int fm_rx_set_rfdepend_softmute(struct fmdev *fmdev, u8 rfdepend_mute) |
59da522a MH |
490 | { |
491 | u8 org_state; | |
d24674c6 | 492 | int ret; |
59da522a MH |
493 | |
494 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
495 | return -EPERM; | |
496 | ||
497 | if (rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_ON && | |
498 | rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_OFF) { | |
499 | fmerr("Invalid RF dependent soft mute\n"); | |
500 | return -EINVAL; | |
501 | } | |
502 | if (fmdev->rx.rf_depend_mute == rfdepend_mute) | |
503 | return 0; | |
504 | ||
505 | org_state = fmdev->rx.rf_depend_mute; | |
506 | fmdev->rx.rf_depend_mute = rfdepend_mute; | |
507 | ||
508 | ret = fm_config_rx_mute_reg(fmdev); | |
509 | if (ret < 0) { | |
510 | fmdev->rx.rf_depend_mute = org_state; | |
511 | return ret; | |
512 | } | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
517 | /* Returns the signal strength level of current channel */ | |
d24674c6 | 518 | int fm_rx_get_rssi_level(struct fmdev *fmdev, u16 *rssilvl) |
59da522a MH |
519 | { |
520 | u16 curr_rssi_lel; | |
521 | u32 resp_len; | |
d24674c6 | 522 | int ret; |
59da522a MH |
523 | |
524 | if (rssilvl == NULL) { | |
525 | fmerr("Invalid memory\n"); | |
526 | return -ENOMEM; | |
527 | } | |
528 | /* Read current RSSI level */ | |
529 | ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, REG_RD, NULL, 2, | |
530 | &curr_rssi_lel, &resp_len); | |
531 | if (ret < 0) | |
532 | return ret; | |
533 | ||
534 | *rssilvl = be16_to_cpu(curr_rssi_lel); | |
535 | ||
536 | return 0; | |
537 | } | |
538 | ||
539 | /* | |
540 | * Sets the signal strength level that once reached | |
541 | * will stop the auto search process | |
542 | */ | |
d24674c6 | 543 | int fm_rx_set_rssi_threshold(struct fmdev *fmdev, short rssi_lvl_toset) |
59da522a MH |
544 | { |
545 | u16 payload; | |
d24674c6 | 546 | int ret; |
59da522a MH |
547 | |
548 | if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN || | |
549 | rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) { | |
550 | fmerr("Invalid RSSI threshold level\n"); | |
551 | return -EINVAL; | |
552 | } | |
553 | payload = (u16)rssi_lvl_toset; | |
554 | ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, REG_WR, &payload, | |
555 | sizeof(payload), NULL, NULL); | |
556 | if (ret < 0) | |
557 | return ret; | |
558 | ||
559 | fmdev->rx.rssi_threshold = rssi_lvl_toset; | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
564 | /* Returns current RX RSSI threshold value */ | |
d24674c6 | 565 | int fm_rx_get_rssi_threshold(struct fmdev *fmdev, short *curr_rssi_lvl) |
59da522a MH |
566 | { |
567 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
568 | return -EPERM; | |
569 | ||
570 | if (curr_rssi_lvl == NULL) { | |
571 | fmerr("Invalid memory\n"); | |
572 | return -ENOMEM; | |
573 | } | |
574 | ||
575 | *curr_rssi_lvl = fmdev->rx.rssi_threshold; | |
576 | ||
577 | return 0; | |
578 | } | |
579 | ||
580 | /* Sets RX stereo/mono modes */ | |
d24674c6 | 581 | int fm_rx_set_stereo_mono(struct fmdev *fmdev, u16 mode) |
59da522a MH |
582 | { |
583 | u16 payload; | |
d24674c6 | 584 | int ret; |
59da522a MH |
585 | |
586 | if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) { | |
587 | fmerr("Invalid mode\n"); | |
588 | return -EINVAL; | |
589 | } | |
590 | ||
591 | /* Set stereo/mono mode */ | |
592 | payload = (u16)mode; | |
593 | ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_WR, &payload, | |
594 | sizeof(payload), NULL, NULL); | |
595 | if (ret < 0) | |
596 | return ret; | |
597 | ||
598 | /* Set stereo blending mode */ | |
599 | payload = FM_STEREO_SOFT_BLEND; | |
600 | ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, REG_WR, &payload, | |
601 | sizeof(payload), NULL, NULL); | |
602 | if (ret < 0) | |
603 | return ret; | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | /* Gets current RX stereo/mono mode */ | |
d24674c6 | 609 | int fm_rx_get_stereo_mono(struct fmdev *fmdev, u16 *mode) |
59da522a MH |
610 | { |
611 | u16 curr_mode; | |
d24674c6 XW |
612 | u32 resp_len; |
613 | int ret; | |
59da522a MH |
614 | |
615 | if (mode == NULL) { | |
616 | fmerr("Invalid memory\n"); | |
617 | return -ENOMEM; | |
618 | } | |
619 | ||
620 | ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_RD, NULL, 2, | |
621 | &curr_mode, &resp_len); | |
622 | if (ret < 0) | |
623 | return ret; | |
624 | ||
625 | *mode = be16_to_cpu(curr_mode); | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
630 | /* Choose RX de-emphasis filter mode (50us/75us) */ | |
d24674c6 | 631 | int fm_rx_set_deemphasis_mode(struct fmdev *fmdev, u16 mode) |
59da522a MH |
632 | { |
633 | u16 payload; | |
d24674c6 | 634 | int ret; |
59da522a MH |
635 | |
636 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
637 | return -EPERM; | |
638 | ||
639 | if (mode != FM_RX_EMPHASIS_FILTER_50_USEC && | |
640 | mode != FM_RX_EMPHASIS_FILTER_75_USEC) { | |
641 | fmerr("Invalid rx de-emphasis mode (%d)\n", mode); | |
642 | return -EINVAL; | |
643 | } | |
644 | ||
645 | payload = mode; | |
646 | ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, REG_WR, &payload, | |
647 | sizeof(payload), NULL, NULL); | |
648 | if (ret < 0) | |
649 | return ret; | |
650 | ||
651 | fmdev->rx.deemphasis_mode = mode; | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | /* Gets current RX de-emphasis filter mode */ | |
d24674c6 | 657 | int fm_rx_get_deemph_mode(struct fmdev *fmdev, u16 *curr_deemphasis_mode) |
59da522a MH |
658 | { |
659 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
660 | return -EPERM; | |
661 | ||
662 | if (curr_deemphasis_mode == NULL) { | |
663 | fmerr("Invalid memory\n"); | |
664 | return -ENOMEM; | |
665 | } | |
666 | ||
667 | *curr_deemphasis_mode = fmdev->rx.deemphasis_mode; | |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
672 | /* Enable/Disable RX RDS */ | |
d24674c6 | 673 | int fm_rx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis) |
59da522a MH |
674 | { |
675 | u16 payload; | |
d24674c6 | 676 | int ret; |
59da522a MH |
677 | |
678 | if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) { | |
679 | fmerr("Invalid rds option\n"); | |
680 | return -EINVAL; | |
681 | } | |
682 | ||
683 | if (rds_en_dis == FM_RDS_ENABLE | |
684 | && fmdev->rx.rds.flag == FM_RDS_DISABLE) { | |
685 | /* Turn on RX RDS and RDS circuit */ | |
686 | payload = FM_RX_PWR_SET_FM_AND_RDS_BLK_ON; | |
687 | ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload, | |
688 | sizeof(payload), NULL, NULL); | |
689 | if (ret < 0) | |
690 | return ret; | |
691 | ||
692 | /* Clear and reset RDS FIFO */ | |
693 | payload = FM_RX_RDS_FLUSH_FIFO; | |
694 | ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, REG_WR, &payload, | |
695 | sizeof(payload), NULL, NULL); | |
696 | if (ret < 0) | |
697 | return ret; | |
698 | ||
699 | /* Read flags - just to clear any pending interrupts. */ | |
700 | ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, | |
701 | NULL, NULL); | |
702 | if (ret < 0) | |
703 | return ret; | |
704 | ||
705 | /* Set RDS FIFO threshold value */ | |
706 | payload = FM_RX_RDS_FIFO_THRESHOLD; | |
707 | ret = fmc_send_cmd(fmdev, RDS_MEM_SET, REG_WR, &payload, | |
708 | sizeof(payload), NULL, NULL); | |
709 | if (ret < 0) | |
710 | return ret; | |
711 | ||
712 | /* Enable RDS interrupt */ | |
713 | fmdev->irq_info.mask |= FM_RDS_EVENT; | |
714 | payload = fmdev->irq_info.mask; | |
715 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
716 | sizeof(payload), NULL, NULL); | |
717 | if (ret < 0) { | |
718 | fmdev->irq_info.mask &= ~FM_RDS_EVENT; | |
719 | return ret; | |
720 | } | |
721 | ||
722 | /* Update our local flag */ | |
723 | fmdev->rx.rds.flag = FM_RDS_ENABLE; | |
724 | } else if (rds_en_dis == FM_RDS_DISABLE | |
725 | && fmdev->rx.rds.flag == FM_RDS_ENABLE) { | |
726 | /* Turn off RX RDS */ | |
727 | payload = FM_RX_PWR_SET_FM_ON_RDS_OFF; | |
728 | ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload, | |
729 | sizeof(payload), NULL, NULL); | |
730 | if (ret < 0) | |
731 | return ret; | |
732 | ||
733 | /* Reset RDS pointers */ | |
734 | fmdev->rx.rds.last_blk_idx = 0; | |
735 | fmdev->rx.rds.wr_idx = 0; | |
736 | fmdev->rx.rds.rd_idx = 0; | |
737 | fm_rx_reset_station_info(fmdev); | |
738 | ||
739 | /* Update RDS local cache */ | |
740 | fmdev->irq_info.mask &= ~(FM_RDS_EVENT); | |
741 | fmdev->rx.rds.flag = FM_RDS_DISABLE; | |
742 | } | |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
747 | /* Returns current RX RDS enable/disable status */ | |
d24674c6 | 748 | int fm_rx_get_rds_mode(struct fmdev *fmdev, u8 *curr_rds_en_dis) |
59da522a MH |
749 | { |
750 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
751 | return -EPERM; | |
752 | ||
753 | if (curr_rds_en_dis == NULL) { | |
754 | fmerr("Invalid memory\n"); | |
755 | return -ENOMEM; | |
756 | } | |
757 | ||
758 | *curr_rds_en_dis = fmdev->rx.rds.flag; | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
763 | /* Sets RDS operation mode (RDS/RDBS) */ | |
d24674c6 | 764 | int fm_rx_set_rds_system(struct fmdev *fmdev, u8 rds_mode) |
59da522a MH |
765 | { |
766 | u16 payload; | |
d24674c6 | 767 | int ret; |
59da522a MH |
768 | |
769 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
770 | return -EPERM; | |
771 | ||
772 | if (rds_mode != FM_RDS_SYSTEM_RDS && rds_mode != FM_RDS_SYSTEM_RBDS) { | |
773 | fmerr("Invalid rds mode\n"); | |
774 | return -EINVAL; | |
775 | } | |
776 | /* Set RDS operation mode */ | |
777 | payload = (u16)rds_mode; | |
778 | ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, REG_WR, &payload, | |
779 | sizeof(payload), NULL, NULL); | |
780 | if (ret < 0) | |
781 | return ret; | |
782 | ||
783 | fmdev->rx.rds_mode = rds_mode; | |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
788 | /* Returns current RDS operation mode */ | |
d24674c6 | 789 | int fm_rx_get_rds_system(struct fmdev *fmdev, u8 *rds_mode) |
59da522a MH |
790 | { |
791 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
792 | return -EPERM; | |
793 | ||
794 | if (rds_mode == NULL) { | |
795 | fmerr("Invalid memory\n"); | |
796 | return -ENOMEM; | |
797 | } | |
798 | ||
799 | *rds_mode = fmdev->rx.rds_mode; | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | /* Configures Alternate Frequency switch mode */ | |
d24674c6 | 805 | int fm_rx_set_af_switch(struct fmdev *fmdev, u8 af_mode) |
59da522a MH |
806 | { |
807 | u16 payload; | |
d24674c6 | 808 | int ret; |
59da522a MH |
809 | |
810 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
811 | return -EPERM; | |
812 | ||
813 | if (af_mode != FM_RX_RDS_AF_SWITCH_MODE_ON && | |
814 | af_mode != FM_RX_RDS_AF_SWITCH_MODE_OFF) { | |
815 | fmerr("Invalid af mode\n"); | |
816 | return -EINVAL; | |
817 | } | |
818 | /* Enable/disable low RSSI interrupt based on af_mode */ | |
819 | if (af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) | |
820 | fmdev->irq_info.mask |= FM_LEV_EVENT; | |
821 | else | |
822 | fmdev->irq_info.mask &= ~FM_LEV_EVENT; | |
823 | ||
824 | payload = fmdev->irq_info.mask; | |
825 | ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, | |
826 | sizeof(payload), NULL, NULL); | |
827 | if (ret < 0) | |
828 | return ret; | |
829 | ||
830 | fmdev->rx.af_mode = af_mode; | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | /* Returns Alternate Frequency switch status */ | |
d24674c6 | 836 | int fm_rx_get_af_switch(struct fmdev *fmdev, u8 *af_mode) |
59da522a MH |
837 | { |
838 | if (fmdev->curr_fmmode != FM_MODE_RX) | |
839 | return -EPERM; | |
840 | ||
841 | if (af_mode == NULL) { | |
842 | fmerr("Invalid memory\n"); | |
843 | return -ENOMEM; | |
844 | } | |
845 | ||
846 | *af_mode = fmdev->rx.af_mode; | |
847 | ||
848 | return 0; | |
849 | } |