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ASoC: Add Freescale SGTL5000 codec support
[mirror_ubuntu-artful-kernel.git] / sound / soc / codecs / sgtl5000.c
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9b34e6cc
ZZ		 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/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22#include <linux/regulator/consumer.h>
23#include <sound/core.h>
24#include <sound/tlv.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
28#include <sound/soc-dapm.h>
29#include <sound/initval.h>
30#include <mach/hardware.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 except DAP */
38static const u16 sgtl5000_regs[SGTL5000_MAX_REG_OFFSET >> 1] = {
39 0xa011, /* 0x0000, CHIP_ID. 11 stand for revison 17 */
40 0x0000, /* 0x0002, CHIP_DIG_POWER. */
41 0x0008, /* 0x0004, CHIP_CKL_CTRL */
42 0x0010, /* 0x0006, CHIP_I2S_CTRL */
43 0x0000, /* 0x0008, reserved */
44 0x0008, /* 0x000A, CHIP_SSS_CTRL */
45 0x0000, /* 0x000C, reserved */
46 0x020c, /* 0x000E, CHIP_ADCDAC_CTRL */
47 0x3c3c, /* 0x0010, CHIP_DAC_VOL */
48 0x0000, /* 0x0012, reserved */
49 0x015f, /* 0x0014, CHIP_PAD_STRENGTH */
50 0x0000, /* 0x0016, reserved */
51 0x0000, /* 0x0018, reserved */
52 0x0000, /* 0x001A, reserved */
53 0x0000, /* 0x001E, reserved */
54 0x0000, /* 0x0020, CHIP_ANA_ADC_CTRL */
55 0x1818, /* 0x0022, CHIP_ANA_HP_CTRL */
56 0x0111, /* 0x0024, CHIP_ANN_CTRL */
57 0x0000, /* 0x0026, CHIP_LINREG_CTRL */
58 0x0000, /* 0x0028, CHIP_REF_CTRL */
59 0x0000, /* 0x002A, CHIP_MIC_CTRL */
60 0x0000, /* 0x002C, CHIP_LINE_OUT_CTRL */
61 0x0404, /* 0x002E, CHIP_LINE_OUT_VOL */
62 0x7060, /* 0x0030, CHIP_ANA_POWER */
63 0x5000, /* 0x0032, CHIP_PLL_CTRL */
64 0x0000, /* 0x0034, CHIP_CLK_TOP_CTRL */
65 0x0000, /* 0x0036, CHIP_ANA_STATUS */
66 0x0000, /* 0x0038, reserved */
67 0x0000, /* 0x003A, CHIP_ANA_TEST2 */
68 0x0000, /* 0x003C, CHIP_SHORT_CTRL */
69 0x0000, /* reserved */
70};
71
72/* default value of dap registers */
73static const u16 sgtl5000_dap_regs[] = {
74 0x0000, /* 0x0100, DAP_CONTROL */
75 0x0000, /* 0x0102, DAP_PEQ */
76 0x0040, /* 0x0104, DAP_BASS_ENHANCE */
77 0x051f, /* 0x0106, DAP_BASS_ENHANCE_CTRL */
78 0x0000, /* 0x0108, DAP_AUDIO_EQ */
79 0x0040, /* 0x010A, DAP_SGTL_SURROUND */
80 0x0000, /* 0x010C, DAP_FILTER_COEF_ACCESS */
81 0x0000, /* 0x010E, DAP_COEF_WR_B0_MSB */
82 0x0000, /* 0x0110, DAP_COEF_WR_B0_LSB */
83 0x0000, /* 0x0112, reserved */
84 0x0000, /* 0x0114, reserved */
85 0x002f, /* 0x0116, DAP_AUDIO_EQ_BASS_BAND0 */
86 0x002f, /* 0x0118, DAP_AUDIO_EQ_BAND0 */
87 0x002f, /* 0x011A, DAP_AUDIO_EQ_BAND2 */
88 0x002f, /* 0x011C, DAP_AUDIO_EQ_BAND3 */
89 0x002f, /* 0x011E, DAP_AUDIO_EQ_TREBLE_BAND4 */
90 0x8000, /* 0x0120, DAP_MAIN_CHAN */
91 0x0000, /* 0x0122, DAP_MIX_CHAN */
92 0x0510, /* 0x0124, DAP_AVC_CTRL */
93 0x1473, /* 0x0126, DAP_AVC_THRESHOLD */
94 0x0028, /* 0x0128, DAP_AVC_ATTACK */
95 0x0050, /* 0x012A, DAP_AVC_DECAY */
96 0x0000, /* 0x012C, DAP_COEF_WR_B1_MSB */
97 0x0000, /* 0x012E, DAP_COEF_WR_B1_LSB */
98 0x0000, /* 0x0130, DAP_COEF_WR_B2_MSB */
99 0x0000, /* 0x0132, DAP_COEF_WR_B2_LSB */
100 0x0000, /* 0x0134, DAP_COEF_WR_A1_MSB */
101 0x0000, /* 0x0136, DAP_COEF_WR_A1_LSB */
102 0x0000, /* 0x0138, DAP_COEF_WR_A2_MSB */
103 0x0000, /* 0x013A, DAP_COEF_WR_A2_LSB */
104};
105
106/* regulator supplies for sgtl5000, VDDD is an optional external supply */
107enum sgtl5000_regulator_supplies {
108 VDDA,
109 VDDIO,
110 VDDD,
111 SGTL5000_SUPPLY_NUM
112};
113
114/* vddd is optional supply */
115static const char *supply_names[SGTL5000_SUPPLY_NUM] = {
116 "VDDA",
117 "VDDIO",
118 "VDDD"
119};
120
121#define LDO_CONSUMER_NAME "VDDD_LDO"
122#define LDO_VOLTAGE 1200000
123
124static struct regulator_consumer_supply ldo_consumer[] = {
125 REGULATOR_SUPPLY(LDO_CONSUMER_NAME, NULL),
126};
127
128struct regulator_init_data ldo_init_data = {
129 .constraints = {
130 .min_uV = 850000,
131 .max_uV = 1600000,
132 .valid_modes_mask = REGULATOR_MODE_NORMAL,
133 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
134 },
135 .num_consumer_supplies = 1,
136 .consumer_supplies = &ldo_consumer[0],
137};
138
139/*
140 * sgtl5000 internal ldo regulator,
141 * enabled when VDDD not provided
142 */
143struct ldo_regulator {
144 struct regulator_desc desc;
145 struct regulator_dev *dev;
146 int voltage;
147 void *codec_data;
148 bool enabled;
149};
150
151/* sgtl5000 private structure in codec */
152struct sgtl5000_priv {
153 int sysclk; /* sysclk rate */
154 int master; /* i2s master or not */
155 int fmt; /* i2s data format */
156 struct regulator_bulk_data supplies[SGTL5000_SUPPLY_NUM];
157 struct ldo_regulator *ldo;
158};
159
160/*
161 * mic_bias power on/off share the same register bits with
162 * output impedance of mic bias, when power on mic bias, we
163 * need reclaim it to impedance value.
164 * 0x0 = Powered off
165 * 0x1 = 2Kohm
166 * 0x2 = 4Kohm
167 * 0x3 = 8Kohm
168 */
169static int mic_bias_event(struct snd_soc_dapm_widget *w,
170 struct snd_kcontrol *kcontrol, int event)
171{
172 switch (event) {
173 case SND_SOC_DAPM_POST_PMU:
174 /* change mic bias resistor to 4Kohm */
175 snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
176 SGTL5000_BIAS_R_4k, SGTL5000_BIAS_R_4k);
177 break;
178
179 case SND_SOC_DAPM_PRE_PMD:
180 /*
181 * SGTL5000_BIAS_R_8k as mask to clean the two bits
182 * of mic bias and output impedance
183 */
184 snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
185 SGTL5000_BIAS_R_8k, 0);
186 break;
187 }
188 return 0;
189}
190
191/*
192 * using codec assist to small pop, hp_powerup or lineout_powerup
193 * should stay setting until vag_powerup is fully ramped down,
194 * vag fully ramped down require 400ms.
195 */
196static int small_pop_event(struct snd_soc_dapm_widget *w,
197 struct snd_kcontrol *kcontrol, int event)
198{
199 switch (event) {
200 case SND_SOC_DAPM_PRE_PMU:
201 snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER,
202 SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
203 break;
204
205 case SND_SOC_DAPM_PRE_PMD:
206 snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER,
207 SGTL5000_VAG_POWERUP, 0);
208 msleep(400);
209 break;
210 default:
211 break;
212 }
213
214 return 0;
215}
216
217/* input sources for ADC */
218static const char *adc_mux_text[] = {
219 "MIC_IN", "LINE_IN"
220};
221
222static const struct soc_enum adc_enum =
223SOC_ENUM_SINGLE(SGTL5000_CHIP_ANA_CTRL, 2, 2, adc_mux_text);
224
225static const struct snd_kcontrol_new adc_mux =
226SOC_DAPM_ENUM("Capture Mux", adc_enum);
227
228/* input sources for DAC */
229static const char *dac_mux_text[] = {
230 "DAC", "LINE_IN"
231};
232
233static const struct soc_enum dac_enum =
234SOC_ENUM_SINGLE(SGTL5000_CHIP_ANA_CTRL, 6, 2, dac_mux_text);
235
236static const struct snd_kcontrol_new dac_mux =
237SOC_DAPM_ENUM("Headphone Mux", dac_enum);
238
239static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = {
240 SND_SOC_DAPM_INPUT("LINE_IN"),
241 SND_SOC_DAPM_INPUT("MIC_IN"),
242
243 SND_SOC_DAPM_OUTPUT("HP_OUT"),
244 SND_SOC_DAPM_OUTPUT("LINE_OUT"),
245
246 SND_SOC_DAPM_MICBIAS_E("Mic Bias", SGTL5000_CHIP_MIC_CTRL, 8, 0,
247 mic_bias_event,
248 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
249
250 SND_SOC_DAPM_PGA_E("HP", SGTL5000_CHIP_ANA_POWER, 4, 0, NULL, 0,
251 small_pop_event,
252 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD),
253 SND_SOC_DAPM_PGA_E("LO", SGTL5000_CHIP_ANA_POWER, 0, 0, NULL, 0,
254 small_pop_event,
255 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD),
256
257 SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0, &adc_mux),
258 SND_SOC_DAPM_MUX("Headphone Mux", SND_SOC_NOPM, 0, 0, &dac_mux),
259
260 /* aif for i2s input */
261 SND_SOC_DAPM_AIF_IN("AIFIN", "Playback",
262 0, SGTL5000_CHIP_DIG_POWER,
263 0, 0),
264
265 /* aif for i2s output */
266 SND_SOC_DAPM_AIF_OUT("AIFOUT", "Capture",
267 0, SGTL5000_CHIP_DIG_POWER,
268 1, 0),
269
270 SND_SOC_DAPM_ADC("ADC", "Capture", SGTL5000_CHIP_ANA_POWER, 1, 0),
271
272 SND_SOC_DAPM_DAC("DAC", "Playback", SGTL5000_CHIP_ANA_POWER, 3, 0),
273};
274
275/* routes for sgtl5000 */
276static const struct snd_soc_dapm_route audio_map[] = {
277 {"Capture Mux", "LINE_IN", "LINE_IN"}, /* line_in --> adc_mux */
278 {"Capture Mux", "MIC_IN", "MIC_IN"}, /* mic_in --> adc_mux */
279
280 {"ADC", NULL, "Capture Mux"}, /* adc_mux --> adc */
281 {"AIFOUT", NULL, "ADC"}, /* adc --> i2s_out */
282
283 {"DAC", NULL, "AIFIN"}, /* i2s-->dac,skip audio mux */
284 {"Headphone Mux", "DAC", "DAC"}, /* dac --> hp_mux */
285 {"LO", NULL, "DAC"}, /* dac --> line_out */
286
287 {"Headphone Mux", "LINE_IN", "LINE_IN"},/* line_in --> hp_mux */
288 {"HP", NULL, "Headphone Mux"}, /* hp_mux --> hp */
289
290 {"LINE_OUT", NULL, "LO"},
291 {"HP_OUT", NULL, "HP"},
292};
293
294/* custom function to fetch info of PCM playback volume */
295static int dac_info_volsw(struct snd_kcontrol *kcontrol,
296 struct snd_ctl_elem_info *uinfo)
297{
298 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
299 uinfo->count = 2;
300 uinfo->value.integer.min = 0;
301 uinfo->value.integer.max = 0xfc - 0x3c;
302 return 0;
303}
304
305/*
306 * custom function to get of PCM playback volume
307 *
308 * dac volume register
309 * 15-------------8-7--------------0
310 * | R channel vol | L channel vol |
311 * -------------------------------
312 *
313 * PCM volume with 0.5017 dB steps from 0 to -90 dB
314 *
315 * register values map to dB
316 * 0x3B and less = Reserved
317 * 0x3C = 0 dB
318 * 0x3D = -0.5 dB
319 * 0xF0 = -90 dB
320 * 0xFC and greater = Muted
321 *
322 * register value map to userspace value
323 *
324 * register value 0x3c(0dB) 0xf0(-90dB)0xfc
325 * ------------------------------
326 * userspace value 0xc0 0
327 */
328static int dac_get_volsw(struct snd_kcontrol *kcontrol,
329 struct snd_ctl_elem_value *ucontrol)
330{
331 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
332 int reg;
333 int l;
334 int r;
335
336 reg = snd_soc_read(codec, SGTL5000_CHIP_DAC_VOL);
337
338 /* get left channel volume */
339 l = (reg & SGTL5000_DAC_VOL_LEFT_MASK) >> SGTL5000_DAC_VOL_LEFT_SHIFT;
340
341 /* get right channel volume */
342 r = (reg & SGTL5000_DAC_VOL_RIGHT_MASK) >> SGTL5000_DAC_VOL_RIGHT_SHIFT;
343
344 /* make sure value fall in (0x3c,0xfc) */
345 l = clamp(l, 0x3c, 0xfc);
346 r = clamp(r, 0x3c, 0xfc);
347
348 /* invert it and map to userspace value */
349 l = 0xfc - l;
350 r = 0xfc - r;
351
352 ucontrol->value.integer.value[0] = l;
353 ucontrol->value.integer.value[1] = r;
354
355 return 0;
356}
357
358/*
359 * custom function to put of PCM playback volume
360 *
361 * dac volume register
362 * 15-------------8-7--------------0
363 * | R channel vol | L channel vol |
364 * -------------------------------
365 *
366 * PCM volume with 0.5017 dB steps from 0 to -90 dB
367 *
368 * register values map to dB
369 * 0x3B and less = Reserved
370 * 0x3C = 0 dB
371 * 0x3D = -0.5 dB
372 * 0xF0 = -90 dB
373 * 0xFC and greater = Muted
374 *
375 * userspace value map to register value
376 *
377 * userspace value 0xc0 0
378 * ------------------------------
379 * register value 0x3c(0dB) 0xf0(-90dB)0xfc
380 */
381static int dac_put_volsw(struct snd_kcontrol *kcontrol,
382 struct snd_ctl_elem_value *ucontrol)
383{
384 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
385 int reg;
386 int l;
387 int r;
388
389 l = ucontrol->value.integer.value[0];
390 r = ucontrol->value.integer.value[1];
391
392 /* make sure userspace volume fall in (0, 0xfc-0x3c) */
393 l = clamp(l, 0, 0xfc - 0x3c);
394 r = clamp(r, 0, 0xfc - 0x3c);
395
396 /* invert it, get the value can be set to register */
397 l = 0xfc - l;
398 r = 0xfc - r;
399
400 /* shift to get the register value */
401 reg = l << SGTL5000_DAC_VOL_LEFT_SHIFT |
402 r << SGTL5000_DAC_VOL_RIGHT_SHIFT;
403
404 snd_soc_write(codec, SGTL5000_CHIP_DAC_VOL, reg);
405
406 return 0;
407}
408
409static const DECLARE_TLV_DB_SCALE(capture_6db_attenuate, -600, 600, 0);
410
411/* tlv for mic gain, 0db 20db 30db 40db */
412static const unsigned int mic_gain_tlv[] = {
413 TLV_DB_RANGE_HEAD(4),
414 0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
415 1, 3, TLV_DB_SCALE_ITEM(2000, 1000, 0),
416};
417
418/* tlv for hp volume, -51.5db to 12.0db, step .5db */
419static const DECLARE_TLV_DB_SCALE(headphone_volume, -5150, 50, 0);
420
421static const struct snd_kcontrol_new sgtl5000_snd_controls[] = {
422 /* SOC_DOUBLE_S8_TLV with invert */
423 {
424 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
425 .name = "PCM Playback Volume",
426 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
427 SNDRV_CTL_ELEM_ACCESS_READWRITE,
428 .info = dac_info_volsw,
429 .get = dac_get_volsw,
430 .put = dac_put_volsw,
431 },
432
433 SOC_DOUBLE("Capture Volume", SGTL5000_CHIP_ANA_ADC_CTRL, 0, 4, 0xf, 0),
434 SOC_SINGLE_TLV("Capture Attenuate Switch (-6dB)",
435 SGTL5000_CHIP_ANA_ADC_CTRL,
436 8, 2, 0, capture_6db_attenuate),
437 SOC_SINGLE("Capture ZC Switch", SGTL5000_CHIP_ANA_CTRL, 1, 1, 0),
438
439 SOC_DOUBLE_TLV("Headphone Playback Volume",
440 SGTL5000_CHIP_ANA_HP_CTRL,
441 0, 8,
442 0x7f, 1,
443 headphone_volume),
444 SOC_SINGLE("Headphone Playback ZC Switch", SGTL5000_CHIP_ANA_CTRL,
445 5, 1, 0),
446
447 SOC_SINGLE_TLV("Mic Volume", SGTL5000_CHIP_MIC_CTRL,
448 0, 4, 0, mic_gain_tlv),
449};
450
451/* mute the codec used by alsa core */
452static int sgtl5000_digital_mute(struct snd_soc_dai *codec_dai, int mute)
453{
454 struct snd_soc_codec *codec = codec_dai->codec;
455 u16 adcdac_ctrl = SGTL5000_DAC_MUTE_LEFT | SGTL5000_DAC_MUTE_RIGHT;
456
457 snd_soc_update_bits(codec, SGTL5000_CHIP_ADCDAC_CTRL,
458 adcdac_ctrl, mute ? adcdac_ctrl : 0);
459
460 return 0;
461}
462
463/* set codec format */
464static int sgtl5000_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
465{
466 struct snd_soc_codec *codec = codec_dai->codec;
467 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
468 u16 i2sctl = 0;
469
470 sgtl5000->master = 0;
471 /*
472 * i2s clock and frame master setting.
473 * ONLY support:
474 * - clock and frame slave,
475 * - clock and frame master
476 */
477 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
478 case SND_SOC_DAIFMT_CBS_CFS:
479 break;
480 case SND_SOC_DAIFMT_CBM_CFM:
481 i2sctl |= SGTL5000_I2S_MASTER;
482 sgtl5000->master = 1;
483 break;
484 default:
485 return -EINVAL;
486 }
487
488 /* setting i2s data format */
489 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
490 case SND_SOC_DAIFMT_DSP_A:
491 i2sctl |= SGTL5000_I2S_MODE_PCM;
492 break;
493 case SND_SOC_DAIFMT_DSP_B:
494 i2sctl |= SGTL5000_I2S_MODE_PCM;
495 i2sctl |= SGTL5000_I2S_LRALIGN;
496 break;
497 case SND_SOC_DAIFMT_I2S:
498 i2sctl |= SGTL5000_I2S_MODE_I2S_LJ;
499 break;
500 case SND_SOC_DAIFMT_RIGHT_J:
501 i2sctl |= SGTL5000_I2S_MODE_RJ;
502 i2sctl |= SGTL5000_I2S_LRPOL;
503 break;
504 case SND_SOC_DAIFMT_LEFT_J:
505 i2sctl |= SGTL5000_I2S_MODE_I2S_LJ;
506 i2sctl |= SGTL5000_I2S_LRALIGN;
507 break;
508 default:
509 return -EINVAL;
510 }
511
512 sgtl5000->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
513
514 /* Clock inversion */
515 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
516 case SND_SOC_DAIFMT_NB_NF:
517 break;
518 case SND_SOC_DAIFMT_IB_NF:
519 i2sctl |= SGTL5000_I2S_SCLK_INV;
520 break;
521 default:
522 return -EINVAL;
523 }
524
525 snd_soc_write(codec, SGTL5000_CHIP_I2S_CTRL, i2sctl);
526
527 return 0;
528}
529
530/* set codec sysclk */
531static int sgtl5000_set_dai_sysclk(struct snd_soc_dai *codec_dai,
532 int clk_id, unsigned int freq, int dir)
533{
534 struct snd_soc_codec *codec = codec_dai->codec;
535 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
536
537 switch (clk_id) {
538 case SGTL5000_SYSCLK:
539 sgtl5000->sysclk = freq;
540 break;
541 default:
542 return -EINVAL;
543 }
544
545 return 0;
546}
547
548/*
549 * set clock according to i2s frame clock,
550 * sgtl5000 provide 2 clock sources.
551 * 1. sys_mclk. sample freq can only configure to
552 * 1/256, 1/384, 1/512 of sys_mclk.
553 * 2. pll. can derive any audio clocks.
554 *
555 * clock setting rules:
556 * 1. in slave mode, only sys_mclk can use.
557 * 2. as constraint by sys_mclk, sample freq should
558 * set to 32k, 44.1k and above.
559 * 3. using sys_mclk prefer to pll to save power.
560 */
561static int sgtl5000_set_clock(struct snd_soc_codec *codec, int frame_rate)
562{
563 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
564 int clk_ctl = 0;
565 int sys_fs; /* sample freq */
566
567 /*
568 * sample freq should be divided by frame clock,
569 * if frame clock lower than 44.1khz, sample feq should set to
570 * 32khz or 44.1khz.
571 */
572 switch (frame_rate) {
573 case 8000:
574 case 16000:
575 sys_fs = 32000;
576 break;
577 case 11025:
578 case 22050:
579 sys_fs = 44100;
580 break;
581 default:
582 sys_fs = frame_rate;
583 break;
584 }
585
586 /* set divided factor of frame clock */
587 switch (sys_fs / frame_rate) {
588 case 4:
589 clk_ctl |= SGTL5000_RATE_MODE_DIV_4 << SGTL5000_RATE_MODE_SHIFT;
590 break;
591 case 2:
592 clk_ctl |= SGTL5000_RATE_MODE_DIV_2 << SGTL5000_RATE_MODE_SHIFT;
593 break;
594 case 1:
595 clk_ctl |= SGTL5000_RATE_MODE_DIV_1 << SGTL5000_RATE_MODE_SHIFT;
596 break;
597 default:
598 return -EINVAL;
599 }
600
601 /* set the sys_fs according to frame rate */
602 switch (sys_fs) {
603 case 32000:
604 clk_ctl |= SGTL5000_SYS_FS_32k << SGTL5000_SYS_FS_SHIFT;
605 break;
606 case 44100:
607 clk_ctl |= SGTL5000_SYS_FS_44_1k << SGTL5000_SYS_FS_SHIFT;
608 break;
609 case 48000:
610 clk_ctl |= SGTL5000_SYS_FS_48k << SGTL5000_SYS_FS_SHIFT;
611 break;
612 case 96000:
613 clk_ctl |= SGTL5000_SYS_FS_96k << SGTL5000_SYS_FS_SHIFT;
614 break;
615 default:
616 dev_err(codec->dev, "frame rate %d not supported\n",
617 frame_rate);
618 return -EINVAL;
619 }
620
621 /*
622 * calculate the divider of mclk/sample_freq,
623 * factor of freq =96k can only be 256, since mclk in range (12m,27m)
624 */
625 switch (sgtl5000->sysclk / sys_fs) {
626 case 256:
627 clk_ctl |= SGTL5000_MCLK_FREQ_256FS <<
628 SGTL5000_MCLK_FREQ_SHIFT;
629 break;
630 case 384:
631 clk_ctl |= SGTL5000_MCLK_FREQ_384FS <<
632 SGTL5000_MCLK_FREQ_SHIFT;
633 break;
634 case 512:
635 clk_ctl |= SGTL5000_MCLK_FREQ_512FS <<
636 SGTL5000_MCLK_FREQ_SHIFT;
637 break;
638 default:
639 /* if mclk not satisify the divider, use pll */
640 if (sgtl5000->master) {
641 clk_ctl |= SGTL5000_MCLK_FREQ_PLL <<
642 SGTL5000_MCLK_FREQ_SHIFT;
643 } else {
644 dev_err(codec->dev,
645 "PLL not supported in slave mode\n");
646 return -EINVAL;
647 }
648 }
649
650 /* if using pll, please check manual 6.4.2 for detail */
651 if ((clk_ctl & SGTL5000_MCLK_FREQ_MASK) == SGTL5000_MCLK_FREQ_PLL) {
652 u64 out, t;
653 int div2;
654 int pll_ctl;
655 unsigned int in, int_div, frac_div;
656
657 if (sgtl5000->sysclk > 17000000) {
658 div2 = 1;
659 in = sgtl5000->sysclk / 2;
660 } else {
661 div2 = 0;
662 in = sgtl5000->sysclk;
663 }
664 if (sys_fs == 44100)
665 out = 180633600;
666 else
667 out = 196608000;
668 t = do_div(out, in);
669 int_div = out;
670 t *= 2048;
671 do_div(t, in);
672 frac_div = t;
673 pll_ctl = int_div << SGTL5000_PLL_INT_DIV_SHIFT |
674 frac_div << SGTL5000_PLL_FRAC_DIV_SHIFT;
675
676 snd_soc_write(codec, SGTL5000_CHIP_PLL_CTRL, pll_ctl);
677 if (div2)
678 snd_soc_update_bits(codec,
679 SGTL5000_CHIP_CLK_TOP_CTRL,
680 SGTL5000_INPUT_FREQ_DIV2,
681 SGTL5000_INPUT_FREQ_DIV2);
682 else
683 snd_soc_update_bits(codec,
684 SGTL5000_CHIP_CLK_TOP_CTRL,
685 SGTL5000_INPUT_FREQ_DIV2,
686 0);
687
688 /* power up pll */
689 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
690 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP,
691 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP);
692 } else {
693 /* power down pll */
694 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
695 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP,
696 0);
697 }
698
699 /* if using pll, clk_ctrl must be set after pll power up */
700 snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL, clk_ctl);
701
702 return 0;
703}
704
705/*
706 * Set PCM DAI bit size and sample rate.
707 * input: params_rate, params_fmt
708 */
709static int sgtl5000_pcm_hw_params(struct snd_pcm_substream *substream,
710 struct snd_pcm_hw_params *params,
711 struct snd_soc_dai *dai)
712{
713 struct snd_soc_pcm_runtime *rtd = substream->private_data;
714 struct snd_soc_codec *codec = rtd->codec;
715 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
716 int channels = params_channels(params);
717 int i2s_ctl = 0;
718 int stereo;
719 int ret;
720
721 /* sysclk should already set */
722 if (!sgtl5000->sysclk) {
723 dev_err(codec->dev, "%s: set sysclk first!\n", __func__);
724 return -EFAULT;
725 }
726
727 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
728 stereo = SGTL5000_DAC_STEREO;
729 else
730 stereo = SGTL5000_ADC_STEREO;
731
732 /* set mono to save power */
733 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER, stereo,
734 channels == 1 ? 0 : stereo);
735
736 /* set codec clock base on lrclk */
737 ret = sgtl5000_set_clock(codec, params_rate(params));
738 if (ret)
739 return ret;
740
741 /* set i2s data format */
742 switch (params_format(params)) {
743 case SNDRV_PCM_FORMAT_S16_LE:
744 if (sgtl5000->fmt == SND_SOC_DAIFMT_RIGHT_J)
745 return -EINVAL;
746 i2s_ctl |= SGTL5000_I2S_DLEN_16 << SGTL5000_I2S_DLEN_SHIFT;
747 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_32FS <<
748 SGTL5000_I2S_SCLKFREQ_SHIFT;
749 break;
750 case SNDRV_PCM_FORMAT_S20_3LE:
751 i2s_ctl |= SGTL5000_I2S_DLEN_20 << SGTL5000_I2S_DLEN_SHIFT;
752 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
753 SGTL5000_I2S_SCLKFREQ_SHIFT;
754 break;
755 case SNDRV_PCM_FORMAT_S24_LE:
756 i2s_ctl |= SGTL5000_I2S_DLEN_24 << SGTL5000_I2S_DLEN_SHIFT;
757 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
758 SGTL5000_I2S_SCLKFREQ_SHIFT;
759 break;
760 case SNDRV_PCM_FORMAT_S32_LE:
761 if (sgtl5000->fmt == SND_SOC_DAIFMT_RIGHT_J)
762 return -EINVAL;
763 i2s_ctl |= SGTL5000_I2S_DLEN_32 << SGTL5000_I2S_DLEN_SHIFT;
764 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
765 SGTL5000_I2S_SCLKFREQ_SHIFT;
766 break;
767 default:
768 return -EINVAL;
769 }
770
771 snd_soc_update_bits(codec, SGTL5000_CHIP_I2S_CTRL, i2s_ctl, i2s_ctl);
772
773 return 0;
774}
775
776static int ldo_regulator_is_enabled(struct regulator_dev *dev)
777{
778 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
779
780 return ldo->enabled;
781}
782
783static int ldo_regulator_enable(struct regulator_dev *dev)
784{
785 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
786 struct snd_soc_codec *codec = (struct snd_soc_codec *)ldo->codec_data;
787 int reg;
788
789 if (ldo_regulator_is_enabled(dev))
790 return 0;
791
792 /* set regulator value firstly */
793 reg = (1600 - ldo->voltage / 1000) / 50;
794 reg = clamp(reg, 0x0, 0xf);
795
796 /* amend the voltage value, unit: uV */
797 ldo->voltage = (1600 - reg * 50) * 1000;
798
799 /* set voltage to register */
800 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
801 (0x1 << 4) - 1, reg);
802
803 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
804 SGTL5000_LINEREG_D_POWERUP,
805 SGTL5000_LINEREG_D_POWERUP);
806
807 /* when internal ldo enabled, simple digital power can be disabled */
808 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
809 SGTL5000_LINREG_SIMPLE_POWERUP,
810 0);
811
812 ldo->enabled = 1;
813 return 0;
814}
815
816static int ldo_regulator_disable(struct regulator_dev *dev)
817{
818 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
819 struct snd_soc_codec *codec = (struct snd_soc_codec *)ldo->codec_data;
820
821 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
822 SGTL5000_LINEREG_D_POWERUP,
823 0);
824
825 /* clear voltage info */
826 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
827 (0x1 << 4) - 1, 0);
828
829 ldo->enabled = 0;
830
831 return 0;
832}
833
834static int ldo_regulator_get_voltage(struct regulator_dev *dev)
835{
836 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
837
838 return ldo->voltage;
839}
840
841static struct regulator_ops ldo_regulator_ops = {
842 .is_enabled = ldo_regulator_is_enabled,
843 .enable = ldo_regulator_enable,
844 .disable = ldo_regulator_disable,
845 .get_voltage = ldo_regulator_get_voltage,
846};
847
848static int ldo_regulator_register(struct snd_soc_codec *codec,
849 struct regulator_init_data *init_data,
850 int voltage)
851{
852 struct ldo_regulator *ldo;
853
854 ldo = kzalloc(sizeof(struct ldo_regulator), GFP_KERNEL);
855
856 if (!ldo) {
857 dev_err(codec->dev, "failed to allocate ldo_regulator\n");
858 return -ENOMEM;
859 }
860
861 ldo->desc.name = kstrdup(dev_name(codec->dev), GFP_KERNEL);
862 if (!ldo->desc.name) {
863 kfree(ldo);
864 dev_err(codec->dev, "failed to allocate decs name memory\n");
865 return -ENOMEM;
866 }
867
868 ldo->desc.type = REGULATOR_VOLTAGE;
869 ldo->desc.owner = THIS_MODULE;
870 ldo->desc.ops = &ldo_regulator_ops;
871 ldo->desc.n_voltages = 1;
872
873 ldo->codec_data = codec;
874 ldo->voltage = voltage;
875
876 ldo->dev = regulator_register(&ldo->desc, codec->dev,
877 init_data, ldo);
878 if (IS_ERR(ldo->dev)) {
879 dev_err(codec->dev, "failed to register regulator\n");
880 kfree(ldo->desc.name);
881 kfree(ldo);
882
883 return PTR_ERR(ldo->dev);
884 }
885
886 return 0;
887}
888
889static int ldo_regulator_remove(struct snd_soc_codec *codec)
890{
891 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
892 struct ldo_regulator *ldo = sgtl5000->ldo;
893
894 if (!ldo)
895 return 0;
896
897 regulator_unregister(ldo->dev);
898 kfree(ldo->desc.name);
899 kfree(ldo);
900
901 return 0;
902}
903
904/*
905 * set dac bias
906 * common state changes:
907 * startup:
908 * off --> standby --> prepare --> on
909 * standby --> prepare --> on
910 *
911 * stop:
912 * on --> prepare --> standby
913 */
914static int sgtl5000_set_bias_level(struct snd_soc_codec *codec,
915 enum snd_soc_bias_level level)
916{
917 int ret;
918 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
919
920 switch (level) {
921 case SND_SOC_BIAS_ON:
922 case SND_SOC_BIAS_PREPARE:
923 break;
924 case SND_SOC_BIAS_STANDBY:
925 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
926 ret = regulator_bulk_enable(
927 ARRAY_SIZE(sgtl5000->supplies),
928 sgtl5000->supplies);
929 if (ret)
930 return ret;
931 udelay(10);
932 }
933
934 break;
935 case SND_SOC_BIAS_OFF:
936 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
937 sgtl5000->supplies);
938 break;
939 }
940
941 codec->dapm.bias_level = level;
942 return 0;
943}
944
945#define SGTL5000_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
946 SNDRV_PCM_FMTBIT_S20_3LE |\
947 SNDRV_PCM_FMTBIT_S24_LE |\
948 SNDRV_PCM_FMTBIT_S32_LE)
949
950struct snd_soc_dai_ops sgtl5000_ops = {
951 .hw_params = sgtl5000_pcm_hw_params,
952 .digital_mute = sgtl5000_digital_mute,
953 .set_fmt = sgtl5000_set_dai_fmt,
954 .set_sysclk = sgtl5000_set_dai_sysclk,
955};
956
957static struct snd_soc_dai_driver sgtl5000_dai = {
958 .name = "sgtl5000",
959 .playback = {
960 .stream_name = "Playback",
961 .channels_min = 1,
962 .channels_max = 2,
963 /*
964 * only support 8~48K + 96K,
965 * TODO modify hw_param to support more
966 */
967 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_96000,
968 .formats = SGTL5000_FORMATS,
969 },
970 .capture = {
971 .stream_name = "Capture",
972 .channels_min = 1,
973 .channels_max = 2,
974 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_96000,
975 .formats = SGTL5000_FORMATS,
976 },
977 .ops = &sgtl5000_ops,
978 .symmetric_rates = 1,
979};
980
981static int sgtl5000_volatile_register(struct snd_soc_codec *codec,
982 unsigned int reg)
983{
984 switch (reg) {
985 case SGTL5000_CHIP_ID:
986 case SGTL5000_CHIP_ADCDAC_CTRL:
987 case SGTL5000_CHIP_ANA_STATUS:
988 return 1;
989 }
990
991 return 0;
992}
993
994#ifdef CONFIG_SUSPEND
995static int sgtl5000_suspend(struct snd_soc_codec *codec, pm_message_t state)
996{
997 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_OFF);
998
999 return 0;
1000}
1001
1002/*
1003 * restore all sgtl5000 registers,
1004 * since a big hole between dap and regular registers,
1005 * we will restore them respectively.
1006 */
1007static int sgtl5000_restore_regs(struct snd_soc_codec *codec)
1008{
1009 u16 *cache = codec->reg_cache;
1010 int i;
1011 int regular_regs = SGTL5000_CHIP_SHORT_CTRL >> 1;
1012
1013 /* restore regular registers */
1014 for (i = 0; i < regular_regs; i++) {
1015 int reg = i << 1;
1016
1017 /* this regs depends on the others */
1018 if (reg == SGTL5000_CHIP_ANA_POWER ||
1019 reg == SGTL5000_CHIP_CLK_CTRL ||
1020 reg == SGTL5000_CHIP_LINREG_CTRL ||
1021 reg == SGTL5000_CHIP_LINE_OUT_CTRL ||
1022 reg == SGTL5000_CHIP_CLK_CTRL)
1023 continue;
1024
1025 snd_soc_write(codec, reg, cache[i]);
1026 }
1027
1028 /* restore dap registers */
1029 for (i = SGTL5000_DAP_REG_OFFSET >> 1;
1030 i < SGTL5000_MAX_REG_OFFSET >> 1; i++) {
1031 int reg = i << 1;
1032
1033 snd_soc_write(codec, reg, cache[i]);
1034 }
1035
1036 /*
1037 * restore power and other regs according
1038 * to set_power() and set_clock()
1039 */
1040 snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL,
1041 cache[SGTL5000_CHIP_LINREG_CTRL >> 1]);
1042
1043 snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER,
1044 cache[SGTL5000_CHIP_ANA_POWER >> 1]);
1045
1046 snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL,
1047 cache[SGTL5000_CHIP_CLK_CTRL >> 1]);
1048
1049 snd_soc_write(codec, SGTL5000_CHIP_REF_CTRL,
1050 cache[SGTL5000_CHIP_REF_CTRL >> 1]);
1051
1052 snd_soc_write(codec, SGTL5000_CHIP_LINE_OUT_CTRL,
1053 cache[SGTL5000_CHIP_LINE_OUT_CTRL >> 1]);
1054 return 0;
1055}
1056
1057static int sgtl5000_resume(struct snd_soc_codec *codec)
1058{
1059 /* Bring the codec back up to standby to enable regulators */
1060 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1061
1062 /* Restore registers by cached in memory */
1063 sgtl5000_restore_regs(codec);
1064 return 0;
1065}
1066#else
1067#define sgtl5000_suspend NULL
1068#define sgtl5000_resume NULL
1069#endif /* CONFIG_SUSPEND */
1070
1071/*
1072 * sgtl5000 has 3 internal power supplies:
1073 * 1. VAG, normally set to vdda/2
1074 * 2. chargepump, set to different value
1075 * according to voltage of vdda and vddio
1076 * 3. line out VAG, normally set to vddio/2
1077 *
1078 * and should be set according to:
1079 * 1. vddd provided by external or not
1080 * 2. vdda and vddio voltage value. > 3.1v or not
1081 * 3. chip revision >=0x11 or not. If >=0x11, not use external vddd.
1082 */
1083static int sgtl5000_set_power_regs(struct snd_soc_codec *codec)
1084{
1085 int vddd;
1086 int vdda;
1087 int vddio;
1088 u16 ana_pwr;
1089 u16 lreg_ctrl;
1090 int vag;
1091 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1092
1093 vdda = regulator_get_voltage(sgtl5000->supplies[VDDA].consumer);
1094 vddio = regulator_get_voltage(sgtl5000->supplies[VDDIO].consumer);
1095 vddd = regulator_get_voltage(sgtl5000->supplies[VDDD].consumer);
1096
1097 vdda = vdda / 1000;
1098 vddio = vddio / 1000;
1099 vddd = vddd / 1000;
1100
1101 if (vdda <= 0 || vddio <= 0 || vddd < 0) {
1102 dev_err(codec->dev, "regulator voltage not set correctly\n");
1103
1104 return -EINVAL;
1105 }
1106
1107 /* according to datasheet, maximum voltage of supplies */
1108 if (vdda > 3600 || vddio > 3600 || vddd > 1980) {
1109 dev_err(codec->dev,
1110 "exceed max voltage vdda %dmv vddio %dma vddd %dma\n",
1111 vdda, vddio, vddd);
1112
1113 return -EINVAL;
1114 }
1115
1116 /* reset value */
1117 ana_pwr = snd_soc_read(codec, SGTL5000_CHIP_ANA_POWER);
1118 ana_pwr |= SGTL5000_DAC_STEREO |
1119 SGTL5000_ADC_STEREO |
1120 SGTL5000_REFTOP_POWERUP;
1121 lreg_ctrl = snd_soc_read(codec, SGTL5000_CHIP_LINREG_CTRL);
1122
1123 if (vddio < 3100 && vdda < 3100) {
1124 /* enable internal oscillator used for charge pump */
1125 snd_soc_update_bits(codec, SGTL5000_CHIP_CLK_TOP_CTRL,
1126 SGTL5000_INT_OSC_EN,
1127 SGTL5000_INT_OSC_EN);
1128 /* Enable VDDC charge pump */
1129 ana_pwr |= SGTL5000_VDDC_CHRGPMP_POWERUP;
1130 } else if (vddio >= 3100 && vdda >= 3100) {
1131 /*
1132 * if vddio and vddd > 3.1v,
1133 * charge pump should be clean before set ana_pwr
1134 */
1135 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1136 SGTL5000_VDDC_CHRGPMP_POWERUP, 0);
1137
1138 /* VDDC use VDDIO rail */
1139 lreg_ctrl |= SGTL5000_VDDC_ASSN_OVRD;
1140 lreg_ctrl |= SGTL5000_VDDC_MAN_ASSN_VDDIO <<
1141 SGTL5000_VDDC_MAN_ASSN_SHIFT;
1142 }
1143
1144 snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL, lreg_ctrl);
1145
1146 snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER, ana_pwr);
1147
1148 /* set voltage to register */
1149 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
1150 (0x1 << 4) - 1, 0x8);
1151
1152 /*
1153 * if vddd linear reg has been enabled,
1154 * simple digital supply should be clear to get
1155 * proper VDDD voltage.
1156 */
1157 if (ana_pwr & SGTL5000_LINEREG_D_POWERUP)
1158 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1159 SGTL5000_LINREG_SIMPLE_POWERUP,
1160 0);
1161 else
1162 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1163 SGTL5000_LINREG_SIMPLE_POWERUP |
1164 SGTL5000_STARTUP_POWERUP,
1165 0);
1166
1167 /*
1168 * set ADC/DAC VAG to vdda / 2,
1169 * should stay in range (0.8v, 1.575v)
1170 */
1171 vag = vdda / 2;
1172 if (vag <= SGTL5000_ANA_GND_BASE)
1173 vag = 0;
1174 else if (vag >= SGTL5000_ANA_GND_BASE + SGTL5000_ANA_GND_STP *
1175 (SGTL5000_ANA_GND_MASK >> SGTL5000_ANA_GND_SHIFT))
1176 vag = SGTL5000_ANA_GND_MASK >> SGTL5000_ANA_GND_SHIFT;
1177 else
1178 vag = (vag - SGTL5000_ANA_GND_BASE) / SGTL5000_ANA_GND_STP;
1179
1180 snd_soc_update_bits(codec, SGTL5000_CHIP_REF_CTRL,
1181 vag << SGTL5000_ANA_GND_SHIFT,
1182 vag << SGTL5000_ANA_GND_SHIFT);
1183
1184 /* set line out VAG to vddio / 2, in range (0.8v, 1.675v) */
1185 vag = vddio / 2;
1186 if (vag <= SGTL5000_LINE_OUT_GND_BASE)
1187 vag = 0;
1188 else if (vag >= SGTL5000_LINE_OUT_GND_BASE +
1189 SGTL5000_LINE_OUT_GND_STP * SGTL5000_LINE_OUT_GND_MAX)
1190 vag = SGTL5000_LINE_OUT_GND_MAX;
1191 else
1192 vag = (vag - SGTL5000_LINE_OUT_GND_BASE) /
1193 SGTL5000_LINE_OUT_GND_STP;
1194
1195 snd_soc_update_bits(codec, SGTL5000_CHIP_LINE_OUT_CTRL,
1196 vag << SGTL5000_LINE_OUT_GND_SHIFT |
1197 SGTL5000_LINE_OUT_CURRENT_360u <<
1198 SGTL5000_LINE_OUT_CURRENT_SHIFT,
1199 vag << SGTL5000_LINE_OUT_GND_SHIFT |
1200 SGTL5000_LINE_OUT_CURRENT_360u <<
1201 SGTL5000_LINE_OUT_CURRENT_SHIFT);
1202
1203 return 0;
1204}
1205
1206static int sgtl5000_enable_regulators(struct snd_soc_codec *codec)
1207{
1208 u16 reg;
1209 int ret;
1210 int rev;
1211 int i;
1212 int external_vddd = 0;
1213 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1214
1215 for (i = 0; i < ARRAY_SIZE(sgtl5000->supplies); i++)
1216 sgtl5000->supplies[i].supply = supply_names[i];
1217
1218 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
1219 sgtl5000->supplies);
1220 if (!ret)
1221 external_vddd = 1;
1222 else {
1223 /* set internal ldo to 1.2v */
1224 int voltage = LDO_VOLTAGE;
1225
1226 ret = ldo_regulator_register(codec, &ldo_init_data, voltage);
1227 if (ret) {
1228 dev_err(codec->dev,
1229 "Failed to register vddd internal supplies: %d\n",
1230 ret);
1231 return ret;
1232 }
1233
1234 sgtl5000->supplies[VDDD].supply = LDO_CONSUMER_NAME;
1235
1236 ret = regulator_bulk_get(codec->dev,
1237 ARRAY_SIZE(sgtl5000->supplies),
1238 sgtl5000->supplies);
1239
1240 if (ret) {
1241 ldo_regulator_remove(codec);
1242 dev_err(codec->dev,
1243 "Failed to request supplies: %d\n", ret);
1244
1245 return ret;
1246 }
1247 }
1248
1249 ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
1250 sgtl5000->supplies);
1251 if (ret)
1252 goto err_regulator_free;
1253
1254 /* wait for all power rails bring up */
1255 udelay(10);
1256
1257 /* read chip information */
1258 reg = snd_soc_read(codec, SGTL5000_CHIP_ID);
1259 if (((reg & SGTL5000_PARTID_MASK) >> SGTL5000_PARTID_SHIFT) !=
1260 SGTL5000_PARTID_PART_ID) {
1261 dev_err(codec->dev,
1262 "Device with ID register %x is not a sgtl5000\n", reg);
1263 ret = -ENODEV;
1264 goto err_regulator_disable;
1265 }
1266
1267 rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT;
1268 dev_info(codec->dev, "sgtl5000 revision %d\n", rev);
1269
1270 /*
1271 * workaround for revision 0x11 and later,
1272 * roll back to use internal LDO
1273 */
1274 if (external_vddd && rev >= 0x11) {
1275 int voltage = LDO_VOLTAGE;
1276 /* disable all regulator first */
1277 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1278 sgtl5000->supplies);
1279 /* free VDDD regulator */
1280 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1281 sgtl5000->supplies);
1282
1283 ret = ldo_regulator_register(codec, &ldo_init_data, voltage);
1284 if (ret)
1285 return ret;
1286
1287 sgtl5000->supplies[VDDD].supply = LDO_CONSUMER_NAME;
1288
1289 ret = regulator_bulk_get(codec->dev,
1290 ARRAY_SIZE(sgtl5000->supplies),
1291 sgtl5000->supplies);
1292 if (ret) {
1293 ldo_regulator_remove(codec);
1294 dev_err(codec->dev,
1295 "Failed to request supplies: %d\n", ret);
1296
1297 return ret;
1298 }
1299
1300 ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
1301 sgtl5000->supplies);
1302 if (ret)
1303 goto err_regulator_free;
1304
1305 /* wait for all power rails bring up */
1306 udelay(10);
1307 }
1308
1309 return 0;
1310
1311err_regulator_disable:
1312 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1313 sgtl5000->supplies);
1314err_regulator_free:
1315 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1316 sgtl5000->supplies);
1317 if (external_vddd)
1318 ldo_regulator_remove(codec);
1319 return ret;
1320
1321}
1322
1323static int sgtl5000_probe(struct snd_soc_codec *codec)
1324{
1325 int ret;
1326 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1327
1328 /* setup i2c data ops */
1329 ret = snd_soc_codec_set_cache_io(codec, 16, 16, SND_SOC_I2C);
1330 if (ret < 0) {
1331 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1332 return ret;
1333 }
1334
1335 ret = sgtl5000_enable_regulators(codec);
1336 if (ret)
1337 return ret;
1338
1339 /* power up sgtl5000 */
1340 ret = sgtl5000_set_power_regs(codec);
1341 if (ret)
1342 goto err;
1343
1344 /* enable small pop, introduce 400ms delay in turning off */
1345 snd_soc_update_bits(codec, SGTL5000_CHIP_REF_CTRL,
1346 SGTL5000_SMALL_POP,
1347 SGTL5000_SMALL_POP);
1348
1349 /* disable short cut detector */
1350 snd_soc_write(codec, SGTL5000_CHIP_SHORT_CTRL, 0);
1351
1352 /*
1353 * set i2s as default input of sound switch
1354 * TODO: add sound switch to control and dapm widge.
1355 */
1356 snd_soc_write(codec, SGTL5000_CHIP_SSS_CTRL,
1357 SGTL5000_DAC_SEL_I2S_IN << SGTL5000_DAC_SEL_SHIFT);
1358 snd_soc_write(codec, SGTL5000_CHIP_DIG_POWER,
1359 SGTL5000_ADC_EN | SGTL5000_DAC_EN);
1360
1361 /* enable dac volume ramp by default */
1362 snd_soc_write(codec, SGTL5000_CHIP_ADCDAC_CTRL,
1363 SGTL5000_DAC_VOL_RAMP_EN |
1364 SGTL5000_DAC_MUTE_RIGHT |
1365 SGTL5000_DAC_MUTE_LEFT);
1366
1367 snd_soc_write(codec, SGTL5000_CHIP_PAD_STRENGTH, 0x015f);
1368
1369 snd_soc_write(codec, SGTL5000_CHIP_ANA_CTRL,
1370 SGTL5000_HP_ZCD_EN |
1371 SGTL5000_ADC_ZCD_EN);
1372
1373 snd_soc_write(codec, SGTL5000_CHIP_MIC_CTRL, 0);
1374
1375 /*
1376 * disable DAP
1377 * TODO:
1378 * Enable DAP in kcontrol and dapm.
1379 */
1380 snd_soc_write(codec, SGTL5000_DAP_CTRL, 0);
1381
1382 /* leading to standby state */
1383 ret = sgtl5000_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1384 if (ret)
1385 goto err;
1386
1387 snd_soc_add_controls(codec, sgtl5000_snd_controls,
1388 ARRAY_SIZE(sgtl5000_snd_controls));
1389
1390 snd_soc_dapm_new_controls(&codec->dapm, sgtl5000_dapm_widgets,
1391 ARRAY_SIZE(sgtl5000_dapm_widgets));
1392
1393 snd_soc_dapm_add_routes(&codec->dapm, audio_map,
1394 ARRAY_SIZE(audio_map));
1395
1396 snd_soc_dapm_new_widgets(&codec->dapm);
1397
1398 return 0;
1399
1400err:
1401 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1402 sgtl5000->supplies);
1403 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1404 sgtl5000->supplies);
1405 ldo_regulator_remove(codec);
1406
1407 return ret;
1408}
1409
1410static int sgtl5000_remove(struct snd_soc_codec *codec)
1411{
1412 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1413
1414 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_OFF);
1415
1416 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1417 sgtl5000->supplies);
1418 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1419 sgtl5000->supplies);
1420 ldo_regulator_remove(codec);
1421
1422 return 0;
1423}
1424
1425struct snd_soc_codec_driver sgtl5000_driver = {
1426 .probe = sgtl5000_probe,
1427 .remove = sgtl5000_remove,
1428 .suspend = sgtl5000_suspend,
1429 .resume = sgtl5000_resume,
1430 .set_bias_level = sgtl5000_set_bias_level,
1431 .reg_cache_size = ARRAY_SIZE(sgtl5000_regs),
1432 .reg_word_size = sizeof(u16),
1433 .reg_cache_step = 2,
1434 .reg_cache_default = sgtl5000_regs,
1435 .volatile_register = sgtl5000_volatile_register,
1436};
1437
1438static __devinit int sgtl5000_i2c_probe(struct i2c_client *client,
1439 const struct i2c_device_id *id)
1440{
1441 struct sgtl5000_priv *sgtl5000;
1442 int ret;
1443
1444 sgtl5000 = kzalloc(sizeof(struct sgtl5000_priv), GFP_KERNEL);
1445 if (!sgtl5000)
1446 return -ENOMEM;
1447
1448 /*
1449 * copy DAP default values to default value array.
1450 * sgtl5000 register space has a big hole, merge it
1451 * at init phase makes life easy.
1452 * FIXME: should we drop 'const' of sgtl5000_regs?
1453 */
1454 memcpy((void *)(&sgtl5000_regs[0] + (SGTL5000_DAP_REG_OFFSET >> 1)),
1455 sgtl5000_dap_regs,
1456 SGTL5000_MAX_REG_OFFSET - SGTL5000_DAP_REG_OFFSET);
1457
1458 i2c_set_clientdata(client, sgtl5000);
1459
1460 ret = snd_soc_register_codec(&client->dev,
1461 &sgtl5000_driver, &sgtl5000_dai, 1);
1462 if (ret) {
1463 dev_err(&client->dev, "Failed to register codec: %d\n", ret);
1464 kfree(sgtl5000);
1465 return ret;
1466 }
1467
1468 return 0;
1469}
1470
1471static __devexit int sgtl5000_i2c_remove(struct i2c_client *client)
1472{
1473 struct sgtl5000_priv *sgtl5000 = i2c_get_clientdata(client);
1474
1475 snd_soc_unregister_codec(&client->dev);
1476
1477 kfree(sgtl5000);
1478 return 0;
1479}
1480
1481static const struct i2c_device_id sgtl5000_id[] = {
1482 {"sgtl5000", 0},
1483 {},
1484};
1485
1486MODULE_DEVICE_TABLE(i2c, sgtl5000_id);
1487
1488static struct i2c_driver sgtl5000_i2c_driver = {
1489 .driver = {
1490 .name = "sgtl5000",
1491 .owner = THIS_MODULE,
1492 },
1493 .probe = sgtl5000_i2c_probe,
1494 .remove = __devexit_p(sgtl5000_i2c_remove),
1495 .id_table = sgtl5000_id,
1496};
1497
1498static int __init sgtl5000_modinit(void)
1499{
1500 return i2c_add_driver(&sgtl5000_i2c_driver);
1501}
1502module_init(sgtl5000_modinit);
1503
1504static void __exit sgtl5000_exit(void)
1505{
1506 i2c_del_driver(&sgtl5000_i2c_driver);
1507}
1508module_exit(sgtl5000_exit);
1509
1510MODULE_DESCRIPTION("Freescale SGTL5000 ALSA SoC Codec Driver");
1511MODULE_AUTHOR("Zeng Zhaoming <zhaoming.zeng@freescale.com>");
1512MODULE_LICENSE("GPL");
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