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iwl3945: do not print RFKILL message
[linux/fpc-iii.git] / sound / soc / codecs / sgtl5000.c
blob1f4093f3f3a19219318eb0f3c407d8f302ce34d3
1 /*
2 * sgtl5000.c -- SGTL5000 ALSA SoC Audio driver
3 *
4 * Copyright 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/init.h>
14 #include <linux/delay.h>
15 #include <linux/slab.h>
16 #include <linux/pm.h>
17 #include <linux/i2c.h>
18 #include <linux/clk.h>
19 #include <linux/regmap.h>
20 #include <linux/regulator/driver.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/regulator/consumer.h>
23 #include <linux/of_device.h>
24 #include <sound/core.h>
25 #include <sound/tlv.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/soc.h>
29 #include <sound/soc-dapm.h>
30 #include <sound/initval.h>
31
32 #include "sgtl5000.h"
33
34 #define SGTL5000_DAP_REG_OFFSET 0x0100
35 #define SGTL5000_MAX_REG_OFFSET 0x013A
36
37 /* default value of sgtl5000 registers */
38 static const struct reg_default sgtl5000_reg_defaults[] = {
39 { SGTL5000_CHIP_CLK_CTRL, 0x0008 },
40 { SGTL5000_CHIP_I2S_CTRL, 0x0010 },
41 { SGTL5000_CHIP_SSS_CTRL, 0x0010 },
42 { SGTL5000_CHIP_DAC_VOL, 0x3c3c },
43 { SGTL5000_CHIP_PAD_STRENGTH, 0x015f },
44 { SGTL5000_CHIP_ANA_HP_CTRL, 0x1818 },
45 { SGTL5000_CHIP_ANA_CTRL, 0x0111 },
46 { SGTL5000_CHIP_LINE_OUT_VOL, 0x0404 },
47 { SGTL5000_CHIP_ANA_POWER, 0x7060 },
48 { SGTL5000_CHIP_PLL_CTRL, 0x5000 },
49 { SGTL5000_DAP_BASS_ENHANCE, 0x0040 },
50 { SGTL5000_DAP_BASS_ENHANCE_CTRL, 0x051f },
51 { SGTL5000_DAP_SURROUND, 0x0040 },
52 { SGTL5000_DAP_EQ_BASS_BAND0, 0x002f },
53 { SGTL5000_DAP_EQ_BASS_BAND1, 0x002f },
54 { SGTL5000_DAP_EQ_BASS_BAND2, 0x002f },
55 { SGTL5000_DAP_EQ_BASS_BAND3, 0x002f },
56 { SGTL5000_DAP_EQ_BASS_BAND4, 0x002f },
57 { SGTL5000_DAP_MAIN_CHAN, 0x8000 },
58 { SGTL5000_DAP_AVC_CTRL, 0x0510 },
59 { SGTL5000_DAP_AVC_THRESHOLD, 0x1473 },
60 { SGTL5000_DAP_AVC_ATTACK, 0x0028 },
61 { SGTL5000_DAP_AVC_DECAY, 0x0050 },
62 };
63
64 /* regulator supplies for sgtl5000, VDDD is an optional external supply */
65 enum sgtl5000_regulator_supplies {
66 VDDA,
67 VDDIO,
68 VDDD,
69 SGTL5000_SUPPLY_NUM
70 };
71
72 /* vddd is optional supply */
73 static const char *supply_names[SGTL5000_SUPPLY_NUM] = {
74 "VDDA",
75 "VDDIO",
76 "VDDD"
77 };
78
79 #define LDO_CONSUMER_NAME "VDDD_LDO"
80 #define LDO_VOLTAGE 1200000
81
82 static struct regulator_consumer_supply ldo_consumer[] = {
83 REGULATOR_SUPPLY(LDO_CONSUMER_NAME, NULL),
84 };
85
86 static struct regulator_init_data ldo_init_data = {
87 .constraints = {
88 .min_uV = 1200000,
89 .max_uV = 1200000,
90 .valid_modes_mask = REGULATOR_MODE_NORMAL,
91 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
92 },
93 .num_consumer_supplies = 1,
94 .consumer_supplies = &ldo_consumer[0],
95 };
96
97 /*
98 * sgtl5000 internal ldo regulator,
99 * enabled when VDDD not provided
100 */
101 struct ldo_regulator {
102 struct regulator_desc desc;
103 struct regulator_dev *dev;
104 int voltage;
105 void *codec_data;
106 bool enabled;
107 };
108
109 /* sgtl5000 private structure in codec */
110 struct sgtl5000_priv {
111 int sysclk; /* sysclk rate */
112 int master; /* i2s master or not */
113 int fmt; /* i2s data format */
114 struct regulator_bulk_data supplies[SGTL5000_SUPPLY_NUM];
115 struct ldo_regulator *ldo;
116 struct regmap *regmap;
117 struct clk *mclk;
118 };
119
120 /*
121 * mic_bias power on/off share the same register bits with
122 * output impedance of mic bias, when power on mic bias, we
123 * need reclaim it to impedance value.
124 * 0x0 = Powered off
125 * 0x1 = 2Kohm
126 * 0x2 = 4Kohm
127 * 0x3 = 8Kohm
128 */
129 static int mic_bias_event(struct snd_soc_dapm_widget *w,
130 struct snd_kcontrol *kcontrol, int event)
131 {
132 switch (event) {
133 case SND_SOC_DAPM_POST_PMU:
134 /* change mic bias resistor to 4Kohm */
135 snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
136 SGTL5000_BIAS_R_MASK,
137 SGTL5000_BIAS_R_4k << SGTL5000_BIAS_R_SHIFT);
138 break;
139
140 case SND_SOC_DAPM_PRE_PMD:
141 snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
142 SGTL5000_BIAS_R_MASK, 0);
143 break;
144 }
145 return 0;
146 }
147
148 /*
149 * As manual described, ADC/DAC only works when VAG powerup,
150 * So enabled VAG before ADC/DAC up.
151 * In power down case, we need wait 400ms when vag fully ramped down.
152 */
153 static int power_vag_event(struct snd_soc_dapm_widget *w,
154 struct snd_kcontrol *kcontrol, int event)
155 {
156 const u32 mask = SGTL5000_DAC_POWERUP | SGTL5000_ADC_POWERUP;
157
158 switch (event) {
159 case SND_SOC_DAPM_POST_PMU:
160 snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER,
161 SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
162 break;
163
164 case SND_SOC_DAPM_PRE_PMD:
165 /*
166 * Don't clear VAG_POWERUP, when both DAC and ADC are
167 * operational to prevent inadvertently starving the
168 * other one of them.
169 */
170 if ((snd_soc_read(w->codec, SGTL5000_CHIP_ANA_POWER) &
171 mask) != mask) {
172 snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER,
173 SGTL5000_VAG_POWERUP, 0);
174 msleep(400);
175 }
176 break;
177 default:
178 break;
179 }
180
181 return 0;
182 }
183
184 /* input sources for ADC */
185 static const char *adc_mux_text[] = {
186 "MIC_IN", "LINE_IN"
187 };
188
189 static const struct soc_enum adc_enum =
190 SOC_ENUM_SINGLE(SGTL5000_CHIP_ANA_CTRL, 2, 2, adc_mux_text);
191
192 static const struct snd_kcontrol_new adc_mux =
193 SOC_DAPM_ENUM("Capture Mux", adc_enum);
194
195 /* input sources for DAC */
196 static const char *dac_mux_text[] = {
197 "DAC", "LINE_IN"
198 };
199
200 static const struct soc_enum dac_enum =
201 SOC_ENUM_SINGLE(SGTL5000_CHIP_ANA_CTRL, 6, 2, dac_mux_text);
202
203 static const struct snd_kcontrol_new dac_mux =
204 SOC_DAPM_ENUM("Headphone Mux", dac_enum);
205
206 static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = {
207 SND_SOC_DAPM_INPUT("LINE_IN"),
208 SND_SOC_DAPM_INPUT("MIC_IN"),
209
210 SND_SOC_DAPM_OUTPUT("HP_OUT"),
211 SND_SOC_DAPM_OUTPUT("LINE_OUT"),
212
213 SND_SOC_DAPM_SUPPLY("Mic Bias", SGTL5000_CHIP_MIC_CTRL, 8, 0,
214 mic_bias_event,
215 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
216
217 SND_SOC_DAPM_PGA("HP", SGTL5000_CHIP_ANA_POWER, 4, 0, NULL, 0),
218 SND_SOC_DAPM_PGA("LO", SGTL5000_CHIP_ANA_POWER, 0, 0, NULL, 0),
219
220 SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0, &adc_mux),
221 SND_SOC_DAPM_MUX("Headphone Mux", SND_SOC_NOPM, 0, 0, &dac_mux),
222
223 /* aif for i2s input */
224 SND_SOC_DAPM_AIF_IN("AIFIN", "Playback",
225 0, SGTL5000_CHIP_DIG_POWER,
226 0, 0),
227
228 /* aif for i2s output */
229 SND_SOC_DAPM_AIF_OUT("AIFOUT", "Capture",
230 0, SGTL5000_CHIP_DIG_POWER,
231 1, 0),
232
233 SND_SOC_DAPM_ADC("ADC", "Capture", SGTL5000_CHIP_ANA_POWER, 1, 0),
234 SND_SOC_DAPM_DAC("DAC", "Playback", SGTL5000_CHIP_ANA_POWER, 3, 0),
235
236 SND_SOC_DAPM_PRE("VAG_POWER_PRE", power_vag_event),
237 SND_SOC_DAPM_POST("VAG_POWER_POST", power_vag_event),
238 };
239
240 /* routes for sgtl5000 */
241 static const struct snd_soc_dapm_route sgtl5000_dapm_routes[] = {
242 {"Capture Mux", "LINE_IN", "LINE_IN"}, /* line_in --> adc_mux */
243 {"Capture Mux", "MIC_IN", "MIC_IN"}, /* mic_in --> adc_mux */
244
245 {"ADC", NULL, "Capture Mux"}, /* adc_mux --> adc */
246 {"AIFOUT", NULL, "ADC"}, /* adc --> i2s_out */
247
248 {"DAC", NULL, "AIFIN"}, /* i2s-->dac,skip audio mux */
249 {"Headphone Mux", "DAC", "DAC"}, /* dac --> hp_mux */
250 {"LO", NULL, "DAC"}, /* dac --> line_out */
251
252 {"Headphone Mux", "LINE_IN", "LINE_IN"},/* line_in --> hp_mux */
253 {"HP", NULL, "Headphone Mux"}, /* hp_mux --> hp */
254
255 {"LINE_OUT", NULL, "LO"},
256 {"HP_OUT", NULL, "HP"},
257 };
258
259 /* custom function to fetch info of PCM playback volume */
260 static int dac_info_volsw(struct snd_kcontrol *kcontrol,
261 struct snd_ctl_elem_info *uinfo)
262 {
263 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
264 uinfo->count = 2;
265 uinfo->value.integer.min = 0;
266 uinfo->value.integer.max = 0xfc - 0x3c;
267 return 0;
268 }
269
270 /*
271 * custom function to get of PCM playback volume
272 *
273 * dac volume register
274 * 15-------------8-7--------------0
275 * | R channel vol | L channel vol |
276 * -------------------------------
277 *
278 * PCM volume with 0.5017 dB steps from 0 to -90 dB
279 *
280 * register values map to dB
281 * 0x3B and less = Reserved
282 * 0x3C = 0 dB
283 * 0x3D = -0.5 dB
284 * 0xF0 = -90 dB
285 * 0xFC and greater = Muted
286 *
287 * register value map to userspace value
288 *
289 * register value 0x3c(0dB) 0xf0(-90dB)0xfc
290 * ------------------------------
291 * userspace value 0xc0 0
292 */
293 static int dac_get_volsw(struct snd_kcontrol *kcontrol,
294 struct snd_ctl_elem_value *ucontrol)
295 {
296 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
297 int reg;
298 int l;
299 int r;
300
301 reg = snd_soc_read(codec, SGTL5000_CHIP_DAC_VOL);
302
303 /* get left channel volume */
304 l = (reg & SGTL5000_DAC_VOL_LEFT_MASK) >> SGTL5000_DAC_VOL_LEFT_SHIFT;
305
306 /* get right channel volume */
307 r = (reg & SGTL5000_DAC_VOL_RIGHT_MASK) >> SGTL5000_DAC_VOL_RIGHT_SHIFT;
308
309 /* make sure value fall in (0x3c,0xfc) */
310 l = clamp(l, 0x3c, 0xfc);
311 r = clamp(r, 0x3c, 0xfc);
312
313 /* invert it and map to userspace value */
314 l = 0xfc - l;
315 r = 0xfc - r;
316
317 ucontrol->value.integer.value[0] = l;
318 ucontrol->value.integer.value[1] = r;
319
320 return 0;
321 }
322
323 /*
324 * custom function to put of PCM playback volume
325 *
326 * dac volume register
327 * 15-------------8-7--------------0
328 * | R channel vol | L channel vol |
329 * -------------------------------
330 *
331 * PCM volume with 0.5017 dB steps from 0 to -90 dB
332 *
333 * register values map to dB
334 * 0x3B and less = Reserved
335 * 0x3C = 0 dB
336 * 0x3D = -0.5 dB
337 * 0xF0 = -90 dB
338 * 0xFC and greater = Muted
339 *
340 * userspace value map to register value
341 *
342 * userspace value 0xc0 0
343 * ------------------------------
344 * register value 0x3c(0dB) 0xf0(-90dB)0xfc
345 */
346 static int dac_put_volsw(struct snd_kcontrol *kcontrol,
347 struct snd_ctl_elem_value *ucontrol)
348 {
349 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
350 int reg;
351 int l;
352 int r;
353
354 l = ucontrol->value.integer.value[0];
355 r = ucontrol->value.integer.value[1];
356
357 /* make sure userspace volume fall in (0, 0xfc-0x3c) */
358 l = clamp(l, 0, 0xfc - 0x3c);
359 r = clamp(r, 0, 0xfc - 0x3c);
360
361 /* invert it, get the value can be set to register */
362 l = 0xfc - l;
363 r = 0xfc - r;
364
365 /* shift to get the register value */
366 reg = l << SGTL5000_DAC_VOL_LEFT_SHIFT |
367 r << SGTL5000_DAC_VOL_RIGHT_SHIFT;
368
369 snd_soc_write(codec, SGTL5000_CHIP_DAC_VOL, reg);
370
371 return 0;
372 }
373
374 static const DECLARE_TLV_DB_SCALE(capture_6db_attenuate, -600, 600, 0);
375
376 /* tlv for mic gain, 0db 20db 30db 40db */
377 static const unsigned int mic_gain_tlv[] = {
378 TLV_DB_RANGE_HEAD(2),
379 0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
380 1, 3, TLV_DB_SCALE_ITEM(2000, 1000, 0),
381 };
382
383 /* tlv for hp volume, -51.5db to 12.0db, step .5db */
384 static const DECLARE_TLV_DB_SCALE(headphone_volume, -5150, 50, 0);
385
386 static const struct snd_kcontrol_new sgtl5000_snd_controls[] = {
387 /* SOC_DOUBLE_S8_TLV with invert */
388 {
389 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
390 .name = "PCM Playback Volume",
391 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
392 SNDRV_CTL_ELEM_ACCESS_READWRITE,
393 .info = dac_info_volsw,
394 .get = dac_get_volsw,
395 .put = dac_put_volsw,
396 },
397
398 SOC_DOUBLE("Capture Volume", SGTL5000_CHIP_ANA_ADC_CTRL, 0, 4, 0xf, 0),
399 SOC_SINGLE_TLV("Capture Attenuate Switch (-6dB)",
400 SGTL5000_CHIP_ANA_ADC_CTRL,
401 8, 1, 0, capture_6db_attenuate),
402 SOC_SINGLE("Capture ZC Switch", SGTL5000_CHIP_ANA_CTRL, 1, 1, 0),
403
404 SOC_DOUBLE_TLV("Headphone Playback Volume",
405 SGTL5000_CHIP_ANA_HP_CTRL,
406 0, 8,
407 0x7f, 1,
408 headphone_volume),
409 SOC_SINGLE("Headphone Playback ZC Switch", SGTL5000_CHIP_ANA_CTRL,
410 5, 1, 0),
411
412 SOC_SINGLE_TLV("Mic Volume", SGTL5000_CHIP_MIC_CTRL,
413 0, 3, 0, mic_gain_tlv),
414 };
415
416 /* mute the codec used by alsa core */
417 static int sgtl5000_digital_mute(struct snd_soc_dai *codec_dai, int mute)
418 {
419 struct snd_soc_codec *codec = codec_dai->codec;
420 u16 adcdac_ctrl = SGTL5000_DAC_MUTE_LEFT | SGTL5000_DAC_MUTE_RIGHT;
421
422 snd_soc_update_bits(codec, SGTL5000_CHIP_ADCDAC_CTRL,
423 adcdac_ctrl, mute ? adcdac_ctrl : 0);
424
425 return 0;
426 }
427
428 /* set codec format */
429 static int sgtl5000_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
430 {
431 struct snd_soc_codec *codec = codec_dai->codec;
432 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
433 u16 i2sctl = 0;
434
435 sgtl5000->master = 0;
436 /*
437 * i2s clock and frame master setting.
438 * ONLY support:
439 * - clock and frame slave,
440 * - clock and frame master
441 */
442 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
443 case SND_SOC_DAIFMT_CBS_CFS:
444 break;
445 case SND_SOC_DAIFMT_CBM_CFM:
446 i2sctl |= SGTL5000_I2S_MASTER;
447 sgtl5000->master = 1;
448 break;
449 default:
450 return -EINVAL;
451 }
452
453 /* setting i2s data format */
454 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
455 case SND_SOC_DAIFMT_DSP_A:
456 i2sctl |= SGTL5000_I2S_MODE_PCM;
457 break;
458 case SND_SOC_DAIFMT_DSP_B:
459 i2sctl |= SGTL5000_I2S_MODE_PCM;
460 i2sctl |= SGTL5000_I2S_LRALIGN;
461 break;
462 case SND_SOC_DAIFMT_I2S:
463 i2sctl |= SGTL5000_I2S_MODE_I2S_LJ;
464 break;
465 case SND_SOC_DAIFMT_RIGHT_J:
466 i2sctl |= SGTL5000_I2S_MODE_RJ;
467 i2sctl |= SGTL5000_I2S_LRPOL;
468 break;
469 case SND_SOC_DAIFMT_LEFT_J:
470 i2sctl |= SGTL5000_I2S_MODE_I2S_LJ;
471 i2sctl |= SGTL5000_I2S_LRALIGN;
472 break;
473 default:
474 return -EINVAL;
475 }
476
477 sgtl5000->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
478
479 /* Clock inversion */
480 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
481 case SND_SOC_DAIFMT_NB_NF:
482 break;
483 case SND_SOC_DAIFMT_IB_NF:
484 i2sctl |= SGTL5000_I2S_SCLK_INV;
485 break;
486 default:
487 return -EINVAL;
488 }
489
490 snd_soc_write(codec, SGTL5000_CHIP_I2S_CTRL, i2sctl);
491
492 return 0;
493 }
494
495 /* set codec sysclk */
496 static int sgtl5000_set_dai_sysclk(struct snd_soc_dai *codec_dai,
497 int clk_id, unsigned int freq, int dir)
498 {
499 struct snd_soc_codec *codec = codec_dai->codec;
500 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
501
502 switch (clk_id) {
503 case SGTL5000_SYSCLK:
504 sgtl5000->sysclk = freq;
505 break;
506 default:
507 return -EINVAL;
508 }
509
510 return 0;
511 }
512
513 /*
514 * set clock according to i2s frame clock,
515 * sgtl5000 provide 2 clock sources.
516 * 1. sys_mclk. sample freq can only configure to
517 * 1/256, 1/384, 1/512 of sys_mclk.
518 * 2. pll. can derive any audio clocks.
519 *
520 * clock setting rules:
521 * 1. in slave mode, only sys_mclk can use.
522 * 2. as constraint by sys_mclk, sample freq should
523 * set to 32k, 44.1k and above.
524 * 3. using sys_mclk prefer to pll to save power.
525 */
526 static int sgtl5000_set_clock(struct snd_soc_codec *codec, int frame_rate)
527 {
528 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
529 int clk_ctl = 0;
530 int sys_fs; /* sample freq */
531
532 /*
533 * sample freq should be divided by frame clock,
534 * if frame clock lower than 44.1khz, sample feq should set to
535 * 32khz or 44.1khz.
536 */
537 switch (frame_rate) {
538 case 8000:
539 case 16000:
540 sys_fs = 32000;
541 break;
542 case 11025:
543 case 22050:
544 sys_fs = 44100;
545 break;
546 default:
547 sys_fs = frame_rate;
548 break;
549 }
550
551 /* set divided factor of frame clock */
552 switch (sys_fs / frame_rate) {
553 case 4:
554 clk_ctl |= SGTL5000_RATE_MODE_DIV_4 << SGTL5000_RATE_MODE_SHIFT;
555 break;
556 case 2:
557 clk_ctl |= SGTL5000_RATE_MODE_DIV_2 << SGTL5000_RATE_MODE_SHIFT;
558 break;
559 case 1:
560 clk_ctl |= SGTL5000_RATE_MODE_DIV_1 << SGTL5000_RATE_MODE_SHIFT;
561 break;
562 default:
563 return -EINVAL;
564 }
565
566 /* set the sys_fs according to frame rate */
567 switch (sys_fs) {
568 case 32000:
569 clk_ctl |= SGTL5000_SYS_FS_32k << SGTL5000_SYS_FS_SHIFT;
570 break;
571 case 44100:
572 clk_ctl |= SGTL5000_SYS_FS_44_1k << SGTL5000_SYS_FS_SHIFT;
573 break;
574 case 48000:
575 clk_ctl |= SGTL5000_SYS_FS_48k << SGTL5000_SYS_FS_SHIFT;
576 break;
577 case 96000:
578 clk_ctl |= SGTL5000_SYS_FS_96k << SGTL5000_SYS_FS_SHIFT;
579 break;
580 default:
581 dev_err(codec->dev, "frame rate %d not supported\n",
582 frame_rate);
583 return -EINVAL;
584 }
585
586 /*
587 * calculate the divider of mclk/sample_freq,
588 * factor of freq =96k can only be 256, since mclk in range (12m,27m)
589 */
590 switch (sgtl5000->sysclk / sys_fs) {
591 case 256:
592 clk_ctl |= SGTL5000_MCLK_FREQ_256FS <<
593 SGTL5000_MCLK_FREQ_SHIFT;
594 break;
595 case 384:
596 clk_ctl |= SGTL5000_MCLK_FREQ_384FS <<
597 SGTL5000_MCLK_FREQ_SHIFT;
598 break;
599 case 512:
600 clk_ctl |= SGTL5000_MCLK_FREQ_512FS <<
601 SGTL5000_MCLK_FREQ_SHIFT;
602 break;
603 default:
604 /* if mclk not satisify the divider, use pll */
605 if (sgtl5000->master) {
606 clk_ctl |= SGTL5000_MCLK_FREQ_PLL <<
607 SGTL5000_MCLK_FREQ_SHIFT;
608 } else {
609 dev_err(codec->dev,
610 "PLL not supported in slave mode\n");
611 return -EINVAL;
612 }
613 }
614
615 /* if using pll, please check manual 6.4.2 for detail */
616 if ((clk_ctl & SGTL5000_MCLK_FREQ_MASK) == SGTL5000_MCLK_FREQ_PLL) {
617 u64 out, t;
618 int div2;
619 int pll_ctl;
620 unsigned int in, int_div, frac_div;
621
622 if (sgtl5000->sysclk > 17000000) {
623 div2 = 1;
624 in = sgtl5000->sysclk / 2;
625 } else {
626 div2 = 0;
627 in = sgtl5000->sysclk;
628 }
629 if (sys_fs == 44100)
630 out = 180633600;
631 else
632 out = 196608000;
633 t = do_div(out, in);
634 int_div = out;
635 t *= 2048;
636 do_div(t, in);
637 frac_div = t;
638 pll_ctl = int_div << SGTL5000_PLL_INT_DIV_SHIFT |
639 frac_div << SGTL5000_PLL_FRAC_DIV_SHIFT;
640
641 snd_soc_write(codec, SGTL5000_CHIP_PLL_CTRL, pll_ctl);
642 if (div2)
643 snd_soc_update_bits(codec,
644 SGTL5000_CHIP_CLK_TOP_CTRL,
645 SGTL5000_INPUT_FREQ_DIV2,
646 SGTL5000_INPUT_FREQ_DIV2);
647 else
648 snd_soc_update_bits(codec,
649 SGTL5000_CHIP_CLK_TOP_CTRL,
650 SGTL5000_INPUT_FREQ_DIV2,
651 0);
652
653 /* power up pll */
654 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
655 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP,
656 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP);
657
658 /* if using pll, clk_ctrl must be set after pll power up */
659 snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL, clk_ctl);
660 } else {
661 /* otherwise, clk_ctrl must be set before pll power down */
662 snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL, clk_ctl);
663
664 /* power down pll */
665 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
666 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP,
667 0);
668 }
669
670 return 0;
671 }
672
673 /*
674 * Set PCM DAI bit size and sample rate.
675 * input: params_rate, params_fmt
676 */
677 static int sgtl5000_pcm_hw_params(struct snd_pcm_substream *substream,
678 struct snd_pcm_hw_params *params,
679 struct snd_soc_dai *dai)
680 {
681 struct snd_soc_codec *codec = dai->codec;
682 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
683 int channels = params_channels(params);
684 int i2s_ctl = 0;
685 int stereo;
686 int ret;
687
688 /* sysclk should already set */
689 if (!sgtl5000->sysclk) {
690 dev_err(codec->dev, "%s: set sysclk first!\n", __func__);
691 return -EFAULT;
692 }
693
694 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
695 stereo = SGTL5000_DAC_STEREO;
696 else
697 stereo = SGTL5000_ADC_STEREO;
698
699 /* set mono to save power */
700 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER, stereo,
701 channels == 1 ? 0 : stereo);
702
703 /* set codec clock base on lrclk */
704 ret = sgtl5000_set_clock(codec, params_rate(params));
705 if (ret)
706 return ret;
707
708 /* set i2s data format */
709 switch (params_format(params)) {
710 case SNDRV_PCM_FORMAT_S16_LE:
711 if (sgtl5000->fmt == SND_SOC_DAIFMT_RIGHT_J)
712 return -EINVAL;
713 i2s_ctl |= SGTL5000_I2S_DLEN_16 << SGTL5000_I2S_DLEN_SHIFT;
714 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_32FS <<
715 SGTL5000_I2S_SCLKFREQ_SHIFT;
716 break;
717 case SNDRV_PCM_FORMAT_S20_3LE:
718 i2s_ctl |= SGTL5000_I2S_DLEN_20 << SGTL5000_I2S_DLEN_SHIFT;
719 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
720 SGTL5000_I2S_SCLKFREQ_SHIFT;
721 break;
722 case SNDRV_PCM_FORMAT_S24_LE:
723 i2s_ctl |= SGTL5000_I2S_DLEN_24 << SGTL5000_I2S_DLEN_SHIFT;
724 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
725 SGTL5000_I2S_SCLKFREQ_SHIFT;
726 break;
727 case SNDRV_PCM_FORMAT_S32_LE:
728 if (sgtl5000->fmt == SND_SOC_DAIFMT_RIGHT_J)
729 return -EINVAL;
730 i2s_ctl |= SGTL5000_I2S_DLEN_32 << SGTL5000_I2S_DLEN_SHIFT;
731 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
732 SGTL5000_I2S_SCLKFREQ_SHIFT;
733 break;
734 default:
735 return -EINVAL;
736 }
737
738 snd_soc_update_bits(codec, SGTL5000_CHIP_I2S_CTRL,
739 SGTL5000_I2S_DLEN_MASK | SGTL5000_I2S_SCLKFREQ_MASK,
740 i2s_ctl);
741
742 return 0;
743 }
744
745 #ifdef CONFIG_REGULATOR
746 static int ldo_regulator_is_enabled(struct regulator_dev *dev)
747 {
748 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
749
750 return ldo->enabled;
751 }
752
753 static int ldo_regulator_enable(struct regulator_dev *dev)
754 {
755 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
756 struct snd_soc_codec *codec = (struct snd_soc_codec *)ldo->codec_data;
757 int reg;
758
759 if (ldo_regulator_is_enabled(dev))
760 return 0;
761
762 /* set regulator value firstly */
763 reg = (1600 - ldo->voltage / 1000) / 50;
764 reg = clamp(reg, 0x0, 0xf);
765
766 /* amend the voltage value, unit: uV */
767 ldo->voltage = (1600 - reg * 50) * 1000;
768
769 /* set voltage to register */
770 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
771 SGTL5000_LINREG_VDDD_MASK, reg);
772
773 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
774 SGTL5000_LINEREG_D_POWERUP,
775 SGTL5000_LINEREG_D_POWERUP);
776
777 /* when internal ldo enabled, simple digital power can be disabled */
778 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
779 SGTL5000_LINREG_SIMPLE_POWERUP,
780 0);
781
782 ldo->enabled = 1;
783 return 0;
784 }
785
786 static int ldo_regulator_disable(struct regulator_dev *dev)
787 {
788 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
789 struct snd_soc_codec *codec = (struct snd_soc_codec *)ldo->codec_data;
790
791 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
792 SGTL5000_LINEREG_D_POWERUP,
793 0);
794
795 /* clear voltage info */
796 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
797 SGTL5000_LINREG_VDDD_MASK, 0);
798
799 ldo->enabled = 0;
800
801 return 0;
802 }
803
804 static int ldo_regulator_get_voltage(struct regulator_dev *dev)
805 {
806 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
807
808 return ldo->voltage;
809 }
810
811 static struct regulator_ops ldo_regulator_ops = {
812 .is_enabled = ldo_regulator_is_enabled,
813 .enable = ldo_regulator_enable,
814 .disable = ldo_regulator_disable,
815 .get_voltage = ldo_regulator_get_voltage,
816 };
817
818 static int ldo_regulator_register(struct snd_soc_codec *codec,
819 struct regulator_init_data *init_data,
820 int voltage)
821 {
822 struct ldo_regulator *ldo;
823 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
824 struct regulator_config config = { };
825
826 ldo = kzalloc(sizeof(struct ldo_regulator), GFP_KERNEL);
827
828 if (!ldo) {
829 dev_err(codec->dev, "failed to allocate ldo_regulator\n");
830 return -ENOMEM;
831 }
832
833 ldo->desc.name = kstrdup(dev_name(codec->dev), GFP_KERNEL);
834 if (!ldo->desc.name) {
835 kfree(ldo);
836 dev_err(codec->dev, "failed to allocate decs name memory\n");
837 return -ENOMEM;
838 }
839
840 ldo->desc.type = REGULATOR_VOLTAGE;
841 ldo->desc.owner = THIS_MODULE;
842 ldo->desc.ops = &ldo_regulator_ops;
843 ldo->desc.n_voltages = 1;
844
845 ldo->codec_data = codec;
846 ldo->voltage = voltage;
847
848 config.dev = codec->dev;
849 config.driver_data = ldo;
850 config.init_data = init_data;
851
852 ldo->dev = regulator_register(&ldo->desc, &config);
853 if (IS_ERR(ldo->dev)) {
854 int ret = PTR_ERR(ldo->dev);
855
856 dev_err(codec->dev, "failed to register regulator\n");
857 kfree(ldo->desc.name);
858 kfree(ldo);
859
860 return ret;
861 }
862 sgtl5000->ldo = ldo;
863
864 return 0;
865 }
866
867 static int ldo_regulator_remove(struct snd_soc_codec *codec)
868 {
869 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
870 struct ldo_regulator *ldo = sgtl5000->ldo;
871
872 if (!ldo)
873 return 0;
874
875 regulator_unregister(ldo->dev);
876 kfree(ldo->desc.name);
877 kfree(ldo);
878
879 return 0;
880 }
881 #else
882 static int ldo_regulator_register(struct snd_soc_codec *codec,
883 struct regulator_init_data *init_data,
884 int voltage)
885 {
886 dev_err(codec->dev, "this setup needs regulator support in the kernel\n");
887 return -EINVAL;
888 }
889
890 static int ldo_regulator_remove(struct snd_soc_codec *codec)
891 {
892 return 0;
893 }
894 #endif
895
896 /*
897 * set dac bias
898 * common state changes:
899 * startup:
900 * off --> standby --> prepare --> on
901 * standby --> prepare --> on
902 *
903 * stop:
904 * on --> prepare --> standby
905 */
906 static int sgtl5000_set_bias_level(struct snd_soc_codec *codec,
907 enum snd_soc_bias_level level)
908 {
909 int ret;
910 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
911
912 switch (level) {
913 case SND_SOC_BIAS_ON:
914 case SND_SOC_BIAS_PREPARE:
915 break;
916 case SND_SOC_BIAS_STANDBY:
917 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
918 ret = regulator_bulk_enable(
919 ARRAY_SIZE(sgtl5000->supplies),
920 sgtl5000->supplies);
921 if (ret)
922 return ret;
923 udelay(10);
924
925 regcache_cache_only(sgtl5000->regmap, false);
926
927 ret = regcache_sync(sgtl5000->regmap);
928 if (ret != 0) {
929 dev_err(codec->dev,
930 "Failed to restore cache: %d\n", ret);
931
932 regcache_cache_only(sgtl5000->regmap, true);
933 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
934 sgtl5000->supplies);
935
936 return ret;
937 }
938 }
939
940 break;
941 case SND_SOC_BIAS_OFF:
942 regcache_cache_only(sgtl5000->regmap, true);
943 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
944 sgtl5000->supplies);
945 break;
946 }
947
948 codec->dapm.bias_level = level;
949 return 0;
950 }
951
952 #define SGTL5000_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
953 SNDRV_PCM_FMTBIT_S20_3LE |\
954 SNDRV_PCM_FMTBIT_S24_LE |\
955 SNDRV_PCM_FMTBIT_S32_LE)
956
957 static const struct snd_soc_dai_ops sgtl5000_ops = {
958 .hw_params = sgtl5000_pcm_hw_params,
959 .digital_mute = sgtl5000_digital_mute,
960 .set_fmt = sgtl5000_set_dai_fmt,
961 .set_sysclk = sgtl5000_set_dai_sysclk,
962 };
963
964 static struct snd_soc_dai_driver sgtl5000_dai = {
965 .name = "sgtl5000",
966 .playback = {
967 .stream_name = "Playback",
968 .channels_min = 1,
969 .channels_max = 2,
970 /*
971 * only support 8~48K + 96K,
972 * TODO modify hw_param to support more
973 */
974 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_96000,
975 .formats = SGTL5000_FORMATS,
976 },
977 .capture = {
978 .stream_name = "Capture",
979 .channels_min = 1,
980 .channels_max = 2,
981 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_96000,
982 .formats = SGTL5000_FORMATS,
983 },
984 .ops = &sgtl5000_ops,
985 .symmetric_rates = 1,
986 };
987
988 static bool sgtl5000_volatile(struct device *dev, unsigned int reg)
989 {
990 switch (reg) {
991 case SGTL5000_CHIP_ID:
992 case SGTL5000_CHIP_ADCDAC_CTRL:
993 case SGTL5000_CHIP_ANA_STATUS:
994 return true;
995 }
996
997 return false;
998 }
999
1000 static bool sgtl5000_readable(struct device *dev, unsigned int reg)
1001 {
1002 switch (reg) {
1003 case SGTL5000_CHIP_ID:
1004 case SGTL5000_CHIP_DIG_POWER:
1005 case SGTL5000_CHIP_CLK_CTRL:
1006 case SGTL5000_CHIP_I2S_CTRL:
1007 case SGTL5000_CHIP_SSS_CTRL:
1008 case SGTL5000_CHIP_ADCDAC_CTRL:
1009 case SGTL5000_CHIP_DAC_VOL:
1010 case SGTL5000_CHIP_PAD_STRENGTH:
1011 case SGTL5000_CHIP_ANA_ADC_CTRL:
1012 case SGTL5000_CHIP_ANA_HP_CTRL:
1013 case SGTL5000_CHIP_ANA_CTRL:
1014 case SGTL5000_CHIP_LINREG_CTRL:
1015 case SGTL5000_CHIP_REF_CTRL:
1016 case SGTL5000_CHIP_MIC_CTRL:
1017 case SGTL5000_CHIP_LINE_OUT_CTRL:
1018 case SGTL5000_CHIP_LINE_OUT_VOL:
1019 case SGTL5000_CHIP_ANA_POWER:
1020 case SGTL5000_CHIP_PLL_CTRL:
1021 case SGTL5000_CHIP_CLK_TOP_CTRL:
1022 case SGTL5000_CHIP_ANA_STATUS:
1023 case SGTL5000_CHIP_SHORT_CTRL:
1024 case SGTL5000_CHIP_ANA_TEST2:
1025 case SGTL5000_DAP_CTRL:
1026 case SGTL5000_DAP_PEQ:
1027 case SGTL5000_DAP_BASS_ENHANCE:
1028 case SGTL5000_DAP_BASS_ENHANCE_CTRL:
1029 case SGTL5000_DAP_AUDIO_EQ:
1030 case SGTL5000_DAP_SURROUND:
1031 case SGTL5000_DAP_FLT_COEF_ACCESS:
1032 case SGTL5000_DAP_COEF_WR_B0_MSB:
1033 case SGTL5000_DAP_COEF_WR_B0_LSB:
1034 case SGTL5000_DAP_EQ_BASS_BAND0:
1035 case SGTL5000_DAP_EQ_BASS_BAND1:
1036 case SGTL5000_DAP_EQ_BASS_BAND2:
1037 case SGTL5000_DAP_EQ_BASS_BAND3:
1038 case SGTL5000_DAP_EQ_BASS_BAND4:
1039 case SGTL5000_DAP_MAIN_CHAN:
1040 case SGTL5000_DAP_MIX_CHAN:
1041 case SGTL5000_DAP_AVC_CTRL:
1042 case SGTL5000_DAP_AVC_THRESHOLD:
1043 case SGTL5000_DAP_AVC_ATTACK:
1044 case SGTL5000_DAP_AVC_DECAY:
1045 case SGTL5000_DAP_COEF_WR_B1_MSB:
1046 case SGTL5000_DAP_COEF_WR_B1_LSB:
1047 case SGTL5000_DAP_COEF_WR_B2_MSB:
1048 case SGTL5000_DAP_COEF_WR_B2_LSB:
1049 case SGTL5000_DAP_COEF_WR_A1_MSB:
1050 case SGTL5000_DAP_COEF_WR_A1_LSB:
1051 case SGTL5000_DAP_COEF_WR_A2_MSB:
1052 case SGTL5000_DAP_COEF_WR_A2_LSB:
1053 return true;
1054
1055 default:
1056 return false;
1057 }
1058 }
1059
1060 #ifdef CONFIG_SUSPEND
1061 static int sgtl5000_suspend(struct snd_soc_codec *codec)
1062 {
1063 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_OFF);
1064
1065 return 0;
1066 }
1067
1068 /*
1069 * restore all sgtl5000 registers,
1070 * since a big hole between dap and regular registers,
1071 * we will restore them respectively.
1072 */
1073 static int sgtl5000_restore_regs(struct snd_soc_codec *codec)
1074 {
1075 u16 *cache = codec->reg_cache;
1076 u16 reg;
1077
1078 /* restore regular registers */
1079 for (reg = 0; reg <= SGTL5000_CHIP_SHORT_CTRL; reg += 2) {
1080
1081 /* These regs should restore in particular order */
1082 if (reg == SGTL5000_CHIP_ANA_POWER ||
1083 reg == SGTL5000_CHIP_CLK_CTRL ||
1084 reg == SGTL5000_CHIP_LINREG_CTRL ||
1085 reg == SGTL5000_CHIP_LINE_OUT_CTRL ||
1086 reg == SGTL5000_CHIP_REF_CTRL)
1087 continue;
1088
1089 snd_soc_write(codec, reg, cache[reg]);
1090 }
1091
1092 /* restore dap registers */
1093 for (reg = SGTL5000_DAP_REG_OFFSET; reg < SGTL5000_MAX_REG_OFFSET; reg += 2)
1094 snd_soc_write(codec, reg, cache[reg]);
1095
1096 /*
1097 * restore these regs according to the power setting sequence in
1098 * sgtl5000_set_power_regs() and clock setting sequence in
1099 * sgtl5000_set_clock().
1100 *
1101 * The order of restore is:
1102 * 1. SGTL5000_CHIP_CLK_CTRL MCLK_FREQ bits (1:0) should be restore after
1103 * SGTL5000_CHIP_ANA_POWER PLL bits set
1104 * 2. SGTL5000_CHIP_LINREG_CTRL should be set before
1105 * SGTL5000_CHIP_ANA_POWER LINREG_D restored
1106 * 3. SGTL5000_CHIP_REF_CTRL controls Analog Ground Voltage,
1107 * prefer to resotre it after SGTL5000_CHIP_ANA_POWER restored
1108 */
1109 snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL,
1110 cache[SGTL5000_CHIP_LINREG_CTRL]);
1111
1112 snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER,
1113 cache[SGTL5000_CHIP_ANA_POWER]);
1114
1115 snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL,
1116 cache[SGTL5000_CHIP_CLK_CTRL]);
1117
1118 snd_soc_write(codec, SGTL5000_CHIP_REF_CTRL,
1119 cache[SGTL5000_CHIP_REF_CTRL]);
1120
1121 snd_soc_write(codec, SGTL5000_CHIP_LINE_OUT_CTRL,
1122 cache[SGTL5000_CHIP_LINE_OUT_CTRL]);
1123 return 0;
1124 }
1125
1126 static int sgtl5000_resume(struct snd_soc_codec *codec)
1127 {
1128 /* Bring the codec back up to standby to enable regulators */
1129 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1130
1131 /* Restore registers by cached in memory */
1132 sgtl5000_restore_regs(codec);
1133 return 0;
1134 }
1135 #else
1136 #define sgtl5000_suspend NULL
1137 #define sgtl5000_resume NULL
1138 #endif /* CONFIG_SUSPEND */
1139
1140 /*
1141 * sgtl5000 has 3 internal power supplies:
1142 * 1. VAG, normally set to vdda/2
1143 * 2. chargepump, set to different value
1144 * according to voltage of vdda and vddio
1145 * 3. line out VAG, normally set to vddio/2
1146 *
1147 * and should be set according to:
1148 * 1. vddd provided by external or not
1149 * 2. vdda and vddio voltage value. > 3.1v or not
1150 * 3. chip revision >=0x11 or not. If >=0x11, not use external vddd.
1151 */
1152 static int sgtl5000_set_power_regs(struct snd_soc_codec *codec)
1153 {
1154 int vddd;
1155 int vdda;
1156 int vddio;
1157 u16 ana_pwr;
1158 u16 lreg_ctrl;
1159 int vag;
1160 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1161
1162 vdda = regulator_get_voltage(sgtl5000->supplies[VDDA].consumer);
1163 vddio = regulator_get_voltage(sgtl5000->supplies[VDDIO].consumer);
1164 vddd = regulator_get_voltage(sgtl5000->supplies[VDDD].consumer);
1165
1166 vdda = vdda / 1000;
1167 vddio = vddio / 1000;
1168 vddd = vddd / 1000;
1169
1170 if (vdda <= 0 || vddio <= 0 || vddd < 0) {
1171 dev_err(codec->dev, "regulator voltage not set correctly\n");
1172
1173 return -EINVAL;
1174 }
1175
1176 /* according to datasheet, maximum voltage of supplies */
1177 if (vdda > 3600 || vddio > 3600 || vddd > 1980) {
1178 dev_err(codec->dev,
1179 "exceed max voltage vdda %dmV vddio %dmV vddd %dmV\n",
1180 vdda, vddio, vddd);
1181
1182 return -EINVAL;
1183 }
1184
1185 /* reset value */
1186 ana_pwr = snd_soc_read(codec, SGTL5000_CHIP_ANA_POWER);
1187 ana_pwr |= SGTL5000_DAC_STEREO |
1188 SGTL5000_ADC_STEREO |
1189 SGTL5000_REFTOP_POWERUP;
1190 lreg_ctrl = snd_soc_read(codec, SGTL5000_CHIP_LINREG_CTRL);
1191
1192 if (vddio < 3100 && vdda < 3100) {
1193 /* enable internal oscillator used for charge pump */
1194 snd_soc_update_bits(codec, SGTL5000_CHIP_CLK_TOP_CTRL,
1195 SGTL5000_INT_OSC_EN,
1196 SGTL5000_INT_OSC_EN);
1197 /* Enable VDDC charge pump */
1198 ana_pwr |= SGTL5000_VDDC_CHRGPMP_POWERUP;
1199 } else if (vddio >= 3100 && vdda >= 3100) {
1200 /*
1201 * if vddio and vddd > 3.1v,
1202 * charge pump should be clean before set ana_pwr
1203 */
1204 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1205 SGTL5000_VDDC_CHRGPMP_POWERUP, 0);
1206
1207 /* VDDC use VDDIO rail */
1208 lreg_ctrl |= SGTL5000_VDDC_ASSN_OVRD;
1209 lreg_ctrl |= SGTL5000_VDDC_MAN_ASSN_VDDIO <<
1210 SGTL5000_VDDC_MAN_ASSN_SHIFT;
1211 }
1212
1213 snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL, lreg_ctrl);
1214
1215 snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER, ana_pwr);
1216
1217 /* set voltage to register */
1218 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
1219 SGTL5000_LINREG_VDDD_MASK, 0x8);
1220
1221 /*
1222 * if vddd linear reg has been enabled,
1223 * simple digital supply should be clear to get
1224 * proper VDDD voltage.
1225 */
1226 if (ana_pwr & SGTL5000_LINEREG_D_POWERUP)
1227 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1228 SGTL5000_LINREG_SIMPLE_POWERUP,
1229 0);
1230 else
1231 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1232 SGTL5000_LINREG_SIMPLE_POWERUP |
1233 SGTL5000_STARTUP_POWERUP,
1234 0);
1235
1236 /*
1237 * set ADC/DAC VAG to vdda / 2,
1238 * should stay in range (0.8v, 1.575v)
1239 */
1240 vag = vdda / 2;
1241 if (vag <= SGTL5000_ANA_GND_BASE)
1242 vag = 0;
1243 else if (vag >= SGTL5000_ANA_GND_BASE + SGTL5000_ANA_GND_STP *
1244 (SGTL5000_ANA_GND_MASK >> SGTL5000_ANA_GND_SHIFT))
1245 vag = SGTL5000_ANA_GND_MASK >> SGTL5000_ANA_GND_SHIFT;
1246 else
1247 vag = (vag - SGTL5000_ANA_GND_BASE) / SGTL5000_ANA_GND_STP;
1248
1249 snd_soc_update_bits(codec, SGTL5000_CHIP_REF_CTRL,
1250 SGTL5000_ANA_GND_MASK, vag << SGTL5000_ANA_GND_SHIFT);
1251
1252 /* set line out VAG to vddio / 2, in range (0.8v, 1.675v) */
1253 vag = vddio / 2;
1254 if (vag <= SGTL5000_LINE_OUT_GND_BASE)
1255 vag = 0;
1256 else if (vag >= SGTL5000_LINE_OUT_GND_BASE +
1257 SGTL5000_LINE_OUT_GND_STP * SGTL5000_LINE_OUT_GND_MAX)
1258 vag = SGTL5000_LINE_OUT_GND_MAX;
1259 else
1260 vag = (vag - SGTL5000_LINE_OUT_GND_BASE) /
1261 SGTL5000_LINE_OUT_GND_STP;
1262
1263 snd_soc_update_bits(codec, SGTL5000_CHIP_LINE_OUT_CTRL,
1264 SGTL5000_LINE_OUT_CURRENT_MASK |
1265 SGTL5000_LINE_OUT_GND_MASK,
1266 vag << SGTL5000_LINE_OUT_GND_SHIFT |
1267 SGTL5000_LINE_OUT_CURRENT_360u <<
1268 SGTL5000_LINE_OUT_CURRENT_SHIFT);
1269
1270 return 0;
1271 }
1272
1273 static int sgtl5000_replace_vddd_with_ldo(struct snd_soc_codec *codec)
1274 {
1275 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1276 int ret;
1277
1278 /* set internal ldo to 1.2v */
1279 ret = ldo_regulator_register(codec, &ldo_init_data, LDO_VOLTAGE);
1280 if (ret) {
1281 dev_err(codec->dev,
1282 "Failed to register vddd internal supplies: %d\n", ret);
1283 return ret;
1284 }
1285
1286 sgtl5000->supplies[VDDD].supply = LDO_CONSUMER_NAME;
1287
1288 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
1289 sgtl5000->supplies);
1290
1291 if (ret) {
1292 ldo_regulator_remove(codec);
1293 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
1294 return ret;
1295 }
1296
1297 dev_info(codec->dev, "Using internal LDO instead of VDDD\n");
1298 return 0;
1299 }
1300
1301 static int sgtl5000_enable_regulators(struct snd_soc_codec *codec)
1302 {
1303 int reg;
1304 int ret;
1305 int rev;
1306 int i;
1307 int external_vddd = 0;
1308 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1309
1310 for (i = 0; i < ARRAY_SIZE(sgtl5000->supplies); i++)
1311 sgtl5000->supplies[i].supply = supply_names[i];
1312
1313 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
1314 sgtl5000->supplies);
1315 if (!ret)
1316 external_vddd = 1;
1317 else {
1318 ret = sgtl5000_replace_vddd_with_ldo(codec);
1319 if (ret)
1320 return ret;
1321 }
1322
1323 ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
1324 sgtl5000->supplies);
1325 if (ret)
1326 goto err_regulator_free;
1327
1328 /* wait for all power rails bring up */
1329 udelay(10);
1330
1331 /*
1332 * workaround for revision 0x11 and later,
1333 * roll back to use internal LDO
1334 */
1335
1336 ret = regmap_read(sgtl5000->regmap, SGTL5000_CHIP_ID, &reg);
1337 if (ret)
1338 goto err_regulator_disable;
1339
1340 rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT;
1341
1342 if (external_vddd && rev >= 0x11) {
1343 /* disable all regulator first */
1344 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1345 sgtl5000->supplies);
1346 /* free VDDD regulator */
1347 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1348 sgtl5000->supplies);
1349
1350 ret = sgtl5000_replace_vddd_with_ldo(codec);
1351 if (ret)
1352 return ret;
1353
1354 ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
1355 sgtl5000->supplies);
1356 if (ret)
1357 goto err_regulator_free;
1358
1359 /* wait for all power rails bring up */
1360 udelay(10);
1361 }
1362
1363 return 0;
1364
1365 err_regulator_disable:
1366 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1367 sgtl5000->supplies);
1368 err_regulator_free:
1369 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1370 sgtl5000->supplies);
1371 if (external_vddd)
1372 ldo_regulator_remove(codec);
1373 return ret;
1374
1375 }
1376
1377 static int sgtl5000_probe(struct snd_soc_codec *codec)
1378 {
1379 int ret;
1380 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1381
1382 /* setup i2c data ops */
1383 codec->control_data = sgtl5000->regmap;
1384 ret = snd_soc_codec_set_cache_io(codec, 16, 16, SND_SOC_REGMAP);
1385 if (ret < 0) {
1386 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1387 return ret;
1388 }
1389
1390 ret = sgtl5000_enable_regulators(codec);
1391 if (ret)
1392 return ret;
1393
1394 /* power up sgtl5000 */
1395 ret = sgtl5000_set_power_regs(codec);
1396 if (ret)
1397 goto err;
1398
1399 /* enable small pop, introduce 400ms delay in turning off */
1400 snd_soc_update_bits(codec, SGTL5000_CHIP_REF_CTRL,
1401 SGTL5000_SMALL_POP,
1402 SGTL5000_SMALL_POP);
1403
1404 /* disable short cut detector */
1405 snd_soc_write(codec, SGTL5000_CHIP_SHORT_CTRL, 0);
1406
1407 /*
1408 * set i2s as default input of sound switch
1409 * TODO: add sound switch to control and dapm widge.
1410 */
1411 snd_soc_write(codec, SGTL5000_CHIP_SSS_CTRL,
1412 SGTL5000_DAC_SEL_I2S_IN << SGTL5000_DAC_SEL_SHIFT);
1413 snd_soc_write(codec, SGTL5000_CHIP_DIG_POWER,
1414 SGTL5000_ADC_EN | SGTL5000_DAC_EN);
1415
1416 /* enable dac volume ramp by default */
1417 snd_soc_write(codec, SGTL5000_CHIP_ADCDAC_CTRL,
1418 SGTL5000_DAC_VOL_RAMP_EN |
1419 SGTL5000_DAC_MUTE_RIGHT |
1420 SGTL5000_DAC_MUTE_LEFT);
1421
1422 snd_soc_write(codec, SGTL5000_CHIP_PAD_STRENGTH, 0x015f);
1423
1424 snd_soc_write(codec, SGTL5000_CHIP_ANA_CTRL,
1425 SGTL5000_HP_ZCD_EN |
1426 SGTL5000_ADC_ZCD_EN);
1427
1428 snd_soc_write(codec, SGTL5000_CHIP_MIC_CTRL, 2);
1429
1430 /*
1431 * disable DAP
1432 * TODO:
1433 * Enable DAP in kcontrol and dapm.
1434 */
1435 snd_soc_write(codec, SGTL5000_DAP_CTRL, 0);
1436
1437 /* leading to standby state */
1438 ret = sgtl5000_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1439 if (ret)
1440 goto err;
1441
1442 return 0;
1443
1444 err:
1445 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1446 sgtl5000->supplies);
1447 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1448 sgtl5000->supplies);
1449 ldo_regulator_remove(codec);
1450
1451 return ret;
1452 }
1453
1454 static int sgtl5000_remove(struct snd_soc_codec *codec)
1455 {
1456 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1457
1458 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_OFF);
1459
1460 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1461 sgtl5000->supplies);
1462 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1463 sgtl5000->supplies);
1464 ldo_regulator_remove(codec);
1465
1466 return 0;
1467 }
1468
1469 static struct snd_soc_codec_driver sgtl5000_driver = {
1470 .probe = sgtl5000_probe,
1471 .remove = sgtl5000_remove,
1472 .suspend = sgtl5000_suspend,
1473 .resume = sgtl5000_resume,
1474 .set_bias_level = sgtl5000_set_bias_level,
1475 .controls = sgtl5000_snd_controls,
1476 .num_controls = ARRAY_SIZE(sgtl5000_snd_controls),
1477 .dapm_widgets = sgtl5000_dapm_widgets,
1478 .num_dapm_widgets = ARRAY_SIZE(sgtl5000_dapm_widgets),
1479 .dapm_routes = sgtl5000_dapm_routes,
1480 .num_dapm_routes = ARRAY_SIZE(sgtl5000_dapm_routes),
1481 };
1482
1483 static const struct regmap_config sgtl5000_regmap = {
1484 .reg_bits = 16,
1485 .val_bits = 16,
1486 .reg_stride = 2,
1487
1488 .max_register = SGTL5000_MAX_REG_OFFSET,
1489 .volatile_reg = sgtl5000_volatile,
1490 .readable_reg = sgtl5000_readable,
1491
1492 .cache_type = REGCACHE_RBTREE,
1493 .reg_defaults = sgtl5000_reg_defaults,
1494 .num_reg_defaults = ARRAY_SIZE(sgtl5000_reg_defaults),
1495 };
1496
1497 /*
1498 * Write all the default values from sgtl5000_reg_defaults[] array into the
1499 * sgtl5000 registers, to make sure we always start with the sane registers
1500 * values as stated in the datasheet.
1501 *
1502 * Since sgtl5000 does not have a reset line, nor a reset command in software,
1503 * we follow this approach to guarantee we always start from the default values
1504 * and avoid problems like, not being able to probe after an audio playback
1505 * followed by a system reset or a 'reboot' command in Linux
1506 */
1507 static int sgtl5000_fill_defaults(struct sgtl5000_priv *sgtl5000)
1508 {
1509 int i, ret, val, index;
1510
1511 for (i = 0; i < ARRAY_SIZE(sgtl5000_reg_defaults); i++) {
1512 val = sgtl5000_reg_defaults[i].def;
1513 index = sgtl5000_reg_defaults[i].reg;
1514 ret = regmap_write(sgtl5000->regmap, index, val);
1515 if (ret)
1516 return ret;
1517 }
1518
1519 return 0;
1520 }
1521
1522 static int sgtl5000_i2c_probe(struct i2c_client *client,
1523 const struct i2c_device_id *id)
1524 {
1525 struct sgtl5000_priv *sgtl5000;
1526 int ret, reg, rev;
1527
1528 sgtl5000 = devm_kzalloc(&client->dev, sizeof(struct sgtl5000_priv),
1529 GFP_KERNEL);
1530 if (!sgtl5000)
1531 return -ENOMEM;
1532
1533 sgtl5000->regmap = devm_regmap_init_i2c(client, &sgtl5000_regmap);
1534 if (IS_ERR(sgtl5000->regmap)) {
1535 ret = PTR_ERR(sgtl5000->regmap);
1536 dev_err(&client->dev, "Failed to allocate regmap: %d\n", ret);
1537 return ret;
1538 }
1539
1540 sgtl5000->mclk = devm_clk_get(&client->dev, NULL);
1541 if (IS_ERR(sgtl5000->mclk)) {
1542 ret = PTR_ERR(sgtl5000->mclk);
1543 dev_err(&client->dev, "Failed to get mclock: %d\n", ret);
1544 /* Defer the probe to see if the clk will be provided later */
1545 if (ret == -ENOENT)
1546 return -EPROBE_DEFER;
1547 return ret;
1548 }
1549
1550 ret = clk_prepare_enable(sgtl5000->mclk);
1551 if (ret)
1552 return ret;
1553
1554 /* read chip information */
1555 ret = regmap_read(sgtl5000->regmap, SGTL5000_CHIP_ID, &reg);
1556 if (ret)
1557 goto disable_clk;
1558
1559 if (((reg & SGTL5000_PARTID_MASK) >> SGTL5000_PARTID_SHIFT) !=
1560 SGTL5000_PARTID_PART_ID) {
1561 dev_err(&client->dev,
1562 "Device with ID register %x is not a sgtl5000\n", reg);
1563 ret = -ENODEV;
1564 goto disable_clk;
1565 }
1566
1567 rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT;
1568 dev_info(&client->dev, "sgtl5000 revision 0x%x\n", rev);
1569
1570 i2c_set_clientdata(client, sgtl5000);
1571
1572 /* Ensure sgtl5000 will start with sane register values */
1573 ret = sgtl5000_fill_defaults(sgtl5000);
1574 if (ret)
1575 goto disable_clk;
1576
1577 ret = snd_soc_register_codec(&client->dev,
1578 &sgtl5000_driver, &sgtl5000_dai, 1);
1579 if (ret)
1580 goto disable_clk;
1581
1582 return 0;
1583
1584 disable_clk:
1585 clk_disable_unprepare(sgtl5000->mclk);
1586 return ret;
1587 }
1588
1589 static int sgtl5000_i2c_remove(struct i2c_client *client)
1590 {
1591 struct sgtl5000_priv *sgtl5000 = i2c_get_clientdata(client);
1592
1593 snd_soc_unregister_codec(&client->dev);
1594 clk_disable_unprepare(sgtl5000->mclk);
1595 return 0;
1596 }
1597
1598 static const struct i2c_device_id sgtl5000_id[] = {
1599 {"sgtl5000", 0},
1600 {},
1601 };
1602
1603 MODULE_DEVICE_TABLE(i2c, sgtl5000_id);
1604
1605 static const struct of_device_id sgtl5000_dt_ids[] = {
1606 { .compatible = "fsl,sgtl5000", },
1607 { /* sentinel */ }
1608 };
1609 MODULE_DEVICE_TABLE(of, sgtl5000_dt_ids);
1610
1611 static struct i2c_driver sgtl5000_i2c_driver = {
1612 .driver = {
1613 .name = "sgtl5000",
1614 .owner = THIS_MODULE,
1615 .of_match_table = sgtl5000_dt_ids,
1616 },
1617 .probe = sgtl5000_i2c_probe,
1618 .remove = sgtl5000_i2c_remove,
1619 .id_table = sgtl5000_id,
1620 };
1621
1622 module_i2c_driver(sgtl5000_i2c_driver);
1623
1624 MODULE_DESCRIPTION("Freescale SGTL5000 ALSA SoC Codec Driver");
1625 MODULE_AUTHOR("Zeng Zhaoming <zengzm.kernel@gmail.com>");
1626 MODULE_LICENSE("GPL");
Linux with added FPC-III support