2 * sgtl5000.c -- SGTL5000 ALSA SoC Audio driver
4 * Copyright 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
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.
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>
17 #include <linux/i2c.h>
18 #include <linux/clk.h>
19 #include <linux/regulator/driver.h>
20 #include <linux/regulator/machine.h>
21 #include <linux/regulator/consumer.h>
22 #include <linux/of_device.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>
33 #define SGTL5000_DAP_REG_OFFSET 0x0100
34 #define SGTL5000_MAX_REG_OFFSET 0x013A
36 /* default value of sgtl5000 registers */
37 static const u16 sgtl5000_regs[SGTL5000_MAX_REG_OFFSET] = {
38 [SGTL5000_CHIP_CLK_CTRL] = 0x0008,
39 [SGTL5000_CHIP_I2S_CTRL] = 0x0010,
40 [SGTL5000_CHIP_SSS_CTRL] = 0x0008,
41 [SGTL5000_CHIP_DAC_VOL] = 0x3c3c,
42 [SGTL5000_CHIP_PAD_STRENGTH] = 0x015f,
43 [SGTL5000_CHIP_ANA_HP_CTRL] = 0x1818,
44 [SGTL5000_CHIP_ANA_CTRL] = 0x0111,
45 [SGTL5000_CHIP_LINE_OUT_VOL] = 0x0404,
46 [SGTL5000_CHIP_ANA_POWER] = 0x7060,
47 [SGTL5000_CHIP_PLL_CTRL] = 0x5000,
48 [SGTL5000_DAP_BASS_ENHANCE] = 0x0040,
49 [SGTL5000_DAP_BASS_ENHANCE_CTRL] = 0x051f,
50 [SGTL5000_DAP_SURROUND] = 0x0040,
51 [SGTL5000_DAP_EQ_BASS_BAND0] = 0x002f,
52 [SGTL5000_DAP_EQ_BASS_BAND1] = 0x002f,
53 [SGTL5000_DAP_EQ_BASS_BAND2] = 0x002f,
54 [SGTL5000_DAP_EQ_BASS_BAND3] = 0x002f,
55 [SGTL5000_DAP_EQ_BASS_BAND4] = 0x002f,
56 [SGTL5000_DAP_MAIN_CHAN] = 0x8000,
57 [SGTL5000_DAP_AVC_CTRL] = 0x0510,
58 [SGTL5000_DAP_AVC_THRESHOLD] = 0x1473,
59 [SGTL5000_DAP_AVC_ATTACK] = 0x0028,
60 [SGTL5000_DAP_AVC_DECAY] = 0x0050,
63 /* regulator supplies for sgtl5000, VDDD is an optional external supply */
64 enum sgtl5000_regulator_supplies {
71 /* vddd is optional supply */
72 static const char *supply_names[SGTL5000_SUPPLY_NUM] = {
78 #define LDO_CONSUMER_NAME "VDDD_LDO"
79 #define LDO_VOLTAGE 1200000
81 static struct regulator_consumer_supply ldo_consumer[] = {
82 REGULATOR_SUPPLY(LDO_CONSUMER_NAME, NULL),
85 static struct regulator_init_data ldo_init_data = {
89 .valid_modes_mask = REGULATOR_MODE_NORMAL,
90 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
92 .num_consumer_supplies = 1,
93 .consumer_supplies = &ldo_consumer[0],
97 * sgtl5000 internal ldo regulator,
98 * enabled when VDDD not provided
100 struct ldo_regulator {
101 struct regulator_desc desc;
102 struct regulator_dev *dev;
108 /* sgtl5000 private structure in codec */
109 struct sgtl5000_priv {
110 int sysclk; /* sysclk rate */
111 int master; /* i2s master or not */
112 int fmt; /* i2s data format */
113 struct regulator_bulk_data supplies[SGTL5000_SUPPLY_NUM];
114 struct ldo_regulator *ldo;
118 * mic_bias power on/off share the same register bits with
119 * output impedance of mic bias, when power on mic bias, we
120 * need reclaim it to impedance value.
126 static int mic_bias_event(struct snd_soc_dapm_widget *w,
127 struct snd_kcontrol *kcontrol, int event)
130 case SND_SOC_DAPM_POST_PMU:
131 /* change mic bias resistor to 4Kohm */
132 snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
133 SGTL5000_BIAS_R_MASK,
134 SGTL5000_BIAS_R_4k << SGTL5000_BIAS_R_SHIFT);
137 case SND_SOC_DAPM_PRE_PMD:
138 snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL,
139 SGTL5000_BIAS_R_MASK, 0);
146 * As manual described, ADC/DAC only works when VAG powerup,
147 * So enabled VAG before ADC/DAC up.
148 * In power down case, we need wait 400ms when vag fully ramped down.
150 static int power_vag_event(struct snd_soc_dapm_widget *w,
151 struct snd_kcontrol *kcontrol, int event)
154 case SND_SOC_DAPM_PRE_PMU:
155 snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER,
156 SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
159 case SND_SOC_DAPM_POST_PMD:
160 snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER,
161 SGTL5000_VAG_POWERUP, 0);
171 /* input sources for ADC */
172 static const char *adc_mux_text[] = {
176 static const struct soc_enum adc_enum =
177 SOC_ENUM_SINGLE(SGTL5000_CHIP_ANA_CTRL, 2, 2, adc_mux_text);
179 static const struct snd_kcontrol_new adc_mux =
180 SOC_DAPM_ENUM("Capture Mux", adc_enum);
182 /* input sources for DAC */
183 static const char *dac_mux_text[] = {
187 static const struct soc_enum dac_enum =
188 SOC_ENUM_SINGLE(SGTL5000_CHIP_ANA_CTRL, 6, 2, dac_mux_text);
190 static const struct snd_kcontrol_new dac_mux =
191 SOC_DAPM_ENUM("Headphone Mux", dac_enum);
193 static const struct snd_soc_dapm_widget sgtl5000_dapm_widgets[] = {
194 SND_SOC_DAPM_INPUT("LINE_IN"),
195 SND_SOC_DAPM_INPUT("MIC_IN"),
197 SND_SOC_DAPM_OUTPUT("HP_OUT"),
198 SND_SOC_DAPM_OUTPUT("LINE_OUT"),
200 SND_SOC_DAPM_SUPPLY("Mic Bias", SGTL5000_CHIP_MIC_CTRL, 8, 0,
202 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
204 SND_SOC_DAPM_PGA("HP", SGTL5000_CHIP_ANA_POWER, 4, 0, NULL, 0),
205 SND_SOC_DAPM_PGA("LO", SGTL5000_CHIP_ANA_POWER, 0, 0, NULL, 0),
207 SND_SOC_DAPM_MUX("Capture Mux", SND_SOC_NOPM, 0, 0, &adc_mux),
208 SND_SOC_DAPM_MUX("Headphone Mux", SND_SOC_NOPM, 0, 0, &dac_mux),
210 /* aif for i2s input */
211 SND_SOC_DAPM_AIF_IN("AIFIN", "Playback",
212 0, SGTL5000_CHIP_DIG_POWER,
215 /* aif for i2s output */
216 SND_SOC_DAPM_AIF_OUT("AIFOUT", "Capture",
217 0, SGTL5000_CHIP_DIG_POWER,
220 SND_SOC_DAPM_SUPPLY("VAG_POWER", SGTL5000_CHIP_ANA_POWER, 7, 0,
222 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
224 SND_SOC_DAPM_ADC("ADC", "Capture", SGTL5000_CHIP_ANA_POWER, 1, 0),
225 SND_SOC_DAPM_DAC("DAC", "Playback", SGTL5000_CHIP_ANA_POWER, 3, 0),
228 /* routes for sgtl5000 */
229 static const struct snd_soc_dapm_route sgtl5000_dapm_routes[] = {
230 {"Capture Mux", "LINE_IN", "LINE_IN"}, /* line_in --> adc_mux */
231 {"Capture Mux", "MIC_IN", "MIC_IN"}, /* mic_in --> adc_mux */
233 {"ADC", NULL, "VAG_POWER"},
234 {"ADC", NULL, "Capture Mux"}, /* adc_mux --> adc */
235 {"AIFOUT", NULL, "ADC"}, /* adc --> i2s_out */
237 {"DAC", NULL, "VAG_POWER"},
238 {"DAC", NULL, "AIFIN"}, /* i2s-->dac,skip audio mux */
239 {"Headphone Mux", "DAC", "DAC"}, /* dac --> hp_mux */
240 {"LO", NULL, "DAC"}, /* dac --> line_out */
242 {"Headphone Mux", "LINE_IN", "LINE_IN"},/* line_in --> hp_mux */
243 {"HP", NULL, "Headphone Mux"}, /* hp_mux --> hp */
245 {"LINE_OUT", NULL, "LO"},
246 {"HP_OUT", NULL, "HP"},
249 /* custom function to fetch info of PCM playback volume */
250 static int dac_info_volsw(struct snd_kcontrol *kcontrol,
251 struct snd_ctl_elem_info *uinfo)
253 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
255 uinfo->value.integer.min = 0;
256 uinfo->value.integer.max = 0xfc - 0x3c;
261 * custom function to get of PCM playback volume
263 * dac volume register
264 * 15-------------8-7--------------0
265 * | R channel vol | L channel vol |
266 * -------------------------------
268 * PCM volume with 0.5017 dB steps from 0 to -90 dB
270 * register values map to dB
271 * 0x3B and less = Reserved
275 * 0xFC and greater = Muted
277 * register value map to userspace value
279 * register value 0x3c(0dB) 0xf0(-90dB)0xfc
280 * ------------------------------
281 * userspace value 0xc0 0
283 static int dac_get_volsw(struct snd_kcontrol *kcontrol,
284 struct snd_ctl_elem_value *ucontrol)
286 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
291 reg = snd_soc_read(codec, SGTL5000_CHIP_DAC_VOL);
293 /* get left channel volume */
294 l = (reg & SGTL5000_DAC_VOL_LEFT_MASK) >> SGTL5000_DAC_VOL_LEFT_SHIFT;
296 /* get right channel volume */
297 r = (reg & SGTL5000_DAC_VOL_RIGHT_MASK) >> SGTL5000_DAC_VOL_RIGHT_SHIFT;
299 /* make sure value fall in (0x3c,0xfc) */
300 l = clamp(l, 0x3c, 0xfc);
301 r = clamp(r, 0x3c, 0xfc);
303 /* invert it and map to userspace value */
307 ucontrol->value.integer.value[0] = l;
308 ucontrol->value.integer.value[1] = r;
314 * custom function to put of PCM playback volume
316 * dac volume register
317 * 15-------------8-7--------------0
318 * | R channel vol | L channel vol |
319 * -------------------------------
321 * PCM volume with 0.5017 dB steps from 0 to -90 dB
323 * register values map to dB
324 * 0x3B and less = Reserved
328 * 0xFC and greater = Muted
330 * userspace value map to register value
332 * userspace value 0xc0 0
333 * ------------------------------
334 * register value 0x3c(0dB) 0xf0(-90dB)0xfc
336 static int dac_put_volsw(struct snd_kcontrol *kcontrol,
337 struct snd_ctl_elem_value *ucontrol)
339 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
344 l = ucontrol->value.integer.value[0];
345 r = ucontrol->value.integer.value[1];
347 /* make sure userspace volume fall in (0, 0xfc-0x3c) */
348 l = clamp(l, 0, 0xfc - 0x3c);
349 r = clamp(r, 0, 0xfc - 0x3c);
351 /* invert it, get the value can be set to register */
355 /* shift to get the register value */
356 reg = l << SGTL5000_DAC_VOL_LEFT_SHIFT |
357 r << SGTL5000_DAC_VOL_RIGHT_SHIFT;
359 snd_soc_write(codec, SGTL5000_CHIP_DAC_VOL, reg);
364 static const DECLARE_TLV_DB_SCALE(capture_6db_attenuate, -600, 600, 0);
366 /* tlv for mic gain, 0db 20db 30db 40db */
367 static const unsigned int mic_gain_tlv[] = {
368 TLV_DB_RANGE_HEAD(2),
369 0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
370 1, 3, TLV_DB_SCALE_ITEM(2000, 1000, 0),
373 /* tlv for hp volume, -51.5db to 12.0db, step .5db */
374 static const DECLARE_TLV_DB_SCALE(headphone_volume, -5150, 50, 0);
376 static const struct snd_kcontrol_new sgtl5000_snd_controls[] = {
377 /* SOC_DOUBLE_S8_TLV with invert */
379 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
380 .name = "PCM Playback Volume",
381 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |
382 SNDRV_CTL_ELEM_ACCESS_READWRITE,
383 .info = dac_info_volsw,
384 .get = dac_get_volsw,
385 .put = dac_put_volsw,
388 SOC_DOUBLE("Capture Volume", SGTL5000_CHIP_ANA_ADC_CTRL, 0, 4, 0xf, 0),
389 SOC_SINGLE_TLV("Capture Attenuate Switch (-6dB)",
390 SGTL5000_CHIP_ANA_ADC_CTRL,
391 8, 2, 0, capture_6db_attenuate),
392 SOC_SINGLE("Capture ZC Switch", SGTL5000_CHIP_ANA_CTRL, 1, 1, 0),
394 SOC_DOUBLE_TLV("Headphone Playback Volume",
395 SGTL5000_CHIP_ANA_HP_CTRL,
399 SOC_SINGLE("Headphone Playback ZC Switch", SGTL5000_CHIP_ANA_CTRL,
402 SOC_SINGLE_TLV("Mic Volume", SGTL5000_CHIP_MIC_CTRL,
403 0, 4, 0, mic_gain_tlv),
406 /* mute the codec used by alsa core */
407 static int sgtl5000_digital_mute(struct snd_soc_dai *codec_dai, int mute)
409 struct snd_soc_codec *codec = codec_dai->codec;
410 u16 adcdac_ctrl = SGTL5000_DAC_MUTE_LEFT | SGTL5000_DAC_MUTE_RIGHT;
412 snd_soc_update_bits(codec, SGTL5000_CHIP_ADCDAC_CTRL,
413 adcdac_ctrl, mute ? adcdac_ctrl : 0);
418 /* set codec format */
419 static int sgtl5000_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
421 struct snd_soc_codec *codec = codec_dai->codec;
422 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
425 sgtl5000->master = 0;
427 * i2s clock and frame master setting.
429 * - clock and frame slave,
430 * - clock and frame master
432 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
433 case SND_SOC_DAIFMT_CBS_CFS:
435 case SND_SOC_DAIFMT_CBM_CFM:
436 i2sctl |= SGTL5000_I2S_MASTER;
437 sgtl5000->master = 1;
443 /* setting i2s data format */
444 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
445 case SND_SOC_DAIFMT_DSP_A:
446 i2sctl |= SGTL5000_I2S_MODE_PCM;
448 case SND_SOC_DAIFMT_DSP_B:
449 i2sctl |= SGTL5000_I2S_MODE_PCM;
450 i2sctl |= SGTL5000_I2S_LRALIGN;
452 case SND_SOC_DAIFMT_I2S:
453 i2sctl |= SGTL5000_I2S_MODE_I2S_LJ;
455 case SND_SOC_DAIFMT_RIGHT_J:
456 i2sctl |= SGTL5000_I2S_MODE_RJ;
457 i2sctl |= SGTL5000_I2S_LRPOL;
459 case SND_SOC_DAIFMT_LEFT_J:
460 i2sctl |= SGTL5000_I2S_MODE_I2S_LJ;
461 i2sctl |= SGTL5000_I2S_LRALIGN;
467 sgtl5000->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
469 /* Clock inversion */
470 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
471 case SND_SOC_DAIFMT_NB_NF:
473 case SND_SOC_DAIFMT_IB_NF:
474 i2sctl |= SGTL5000_I2S_SCLK_INV;
480 snd_soc_write(codec, SGTL5000_CHIP_I2S_CTRL, i2sctl);
485 /* set codec sysclk */
486 static int sgtl5000_set_dai_sysclk(struct snd_soc_dai *codec_dai,
487 int clk_id, unsigned int freq, int dir)
489 struct snd_soc_codec *codec = codec_dai->codec;
490 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
493 case SGTL5000_SYSCLK:
494 sgtl5000->sysclk = freq;
504 * set clock according to i2s frame clock,
505 * sgtl5000 provide 2 clock sources.
506 * 1. sys_mclk. sample freq can only configure to
507 * 1/256, 1/384, 1/512 of sys_mclk.
508 * 2. pll. can derive any audio clocks.
510 * clock setting rules:
511 * 1. in slave mode, only sys_mclk can use.
512 * 2. as constraint by sys_mclk, sample freq should
513 * set to 32k, 44.1k and above.
514 * 3. using sys_mclk prefer to pll to save power.
516 static int sgtl5000_set_clock(struct snd_soc_codec *codec, int frame_rate)
518 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
520 int sys_fs; /* sample freq */
523 * sample freq should be divided by frame clock,
524 * if frame clock lower than 44.1khz, sample feq should set to
527 switch (frame_rate) {
541 /* set divided factor of frame clock */
542 switch (sys_fs / frame_rate) {
544 clk_ctl |= SGTL5000_RATE_MODE_DIV_4 << SGTL5000_RATE_MODE_SHIFT;
547 clk_ctl |= SGTL5000_RATE_MODE_DIV_2 << SGTL5000_RATE_MODE_SHIFT;
550 clk_ctl |= SGTL5000_RATE_MODE_DIV_1 << SGTL5000_RATE_MODE_SHIFT;
556 /* set the sys_fs according to frame rate */
559 clk_ctl |= SGTL5000_SYS_FS_32k << SGTL5000_SYS_FS_SHIFT;
562 clk_ctl |= SGTL5000_SYS_FS_44_1k << SGTL5000_SYS_FS_SHIFT;
565 clk_ctl |= SGTL5000_SYS_FS_48k << SGTL5000_SYS_FS_SHIFT;
568 clk_ctl |= SGTL5000_SYS_FS_96k << SGTL5000_SYS_FS_SHIFT;
571 dev_err(codec->dev, "frame rate %d not supported\n",
577 * calculate the divider of mclk/sample_freq,
578 * factor of freq =96k can only be 256, since mclk in range (12m,27m)
580 switch (sgtl5000->sysclk / sys_fs) {
582 clk_ctl |= SGTL5000_MCLK_FREQ_256FS <<
583 SGTL5000_MCLK_FREQ_SHIFT;
586 clk_ctl |= SGTL5000_MCLK_FREQ_384FS <<
587 SGTL5000_MCLK_FREQ_SHIFT;
590 clk_ctl |= SGTL5000_MCLK_FREQ_512FS <<
591 SGTL5000_MCLK_FREQ_SHIFT;
594 /* if mclk not satisify the divider, use pll */
595 if (sgtl5000->master) {
596 clk_ctl |= SGTL5000_MCLK_FREQ_PLL <<
597 SGTL5000_MCLK_FREQ_SHIFT;
600 "PLL not supported in slave mode\n");
605 /* if using pll, please check manual 6.4.2 for detail */
606 if ((clk_ctl & SGTL5000_MCLK_FREQ_MASK) == SGTL5000_MCLK_FREQ_PLL) {
610 unsigned int in, int_div, frac_div;
612 if (sgtl5000->sysclk > 17000000) {
614 in = sgtl5000->sysclk / 2;
617 in = sgtl5000->sysclk;
628 pll_ctl = int_div << SGTL5000_PLL_INT_DIV_SHIFT |
629 frac_div << SGTL5000_PLL_FRAC_DIV_SHIFT;
631 snd_soc_write(codec, SGTL5000_CHIP_PLL_CTRL, pll_ctl);
633 snd_soc_update_bits(codec,
634 SGTL5000_CHIP_CLK_TOP_CTRL,
635 SGTL5000_INPUT_FREQ_DIV2,
636 SGTL5000_INPUT_FREQ_DIV2);
638 snd_soc_update_bits(codec,
639 SGTL5000_CHIP_CLK_TOP_CTRL,
640 SGTL5000_INPUT_FREQ_DIV2,
644 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
645 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP,
646 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP);
649 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
650 SGTL5000_PLL_POWERUP | SGTL5000_VCOAMP_POWERUP,
654 /* if using pll, clk_ctrl must be set after pll power up */
655 snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL, clk_ctl);
661 * Set PCM DAI bit size and sample rate.
662 * input: params_rate, params_fmt
664 static int sgtl5000_pcm_hw_params(struct snd_pcm_substream *substream,
665 struct snd_pcm_hw_params *params,
666 struct snd_soc_dai *dai)
668 struct snd_soc_codec *codec = dai->codec;
669 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
670 int channels = params_channels(params);
675 /* sysclk should already set */
676 if (!sgtl5000->sysclk) {
677 dev_err(codec->dev, "%s: set sysclk first!\n", __func__);
681 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
682 stereo = SGTL5000_DAC_STEREO;
684 stereo = SGTL5000_ADC_STEREO;
686 /* set mono to save power */
687 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER, stereo,
688 channels == 1 ? 0 : stereo);
690 /* set codec clock base on lrclk */
691 ret = sgtl5000_set_clock(codec, params_rate(params));
695 /* set i2s data format */
696 switch (params_format(params)) {
697 case SNDRV_PCM_FORMAT_S16_LE:
698 if (sgtl5000->fmt == SND_SOC_DAIFMT_RIGHT_J)
700 i2s_ctl |= SGTL5000_I2S_DLEN_16 << SGTL5000_I2S_DLEN_SHIFT;
701 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_32FS <<
702 SGTL5000_I2S_SCLKFREQ_SHIFT;
704 case SNDRV_PCM_FORMAT_S20_3LE:
705 i2s_ctl |= SGTL5000_I2S_DLEN_20 << SGTL5000_I2S_DLEN_SHIFT;
706 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
707 SGTL5000_I2S_SCLKFREQ_SHIFT;
709 case SNDRV_PCM_FORMAT_S24_LE:
710 i2s_ctl |= SGTL5000_I2S_DLEN_24 << SGTL5000_I2S_DLEN_SHIFT;
711 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
712 SGTL5000_I2S_SCLKFREQ_SHIFT;
714 case SNDRV_PCM_FORMAT_S32_LE:
715 if (sgtl5000->fmt == SND_SOC_DAIFMT_RIGHT_J)
717 i2s_ctl |= SGTL5000_I2S_DLEN_32 << SGTL5000_I2S_DLEN_SHIFT;
718 i2s_ctl |= SGTL5000_I2S_SCLKFREQ_64FS <<
719 SGTL5000_I2S_SCLKFREQ_SHIFT;
725 snd_soc_update_bits(codec, SGTL5000_CHIP_I2S_CTRL,
726 SGTL5000_I2S_DLEN_MASK | SGTL5000_I2S_SCLKFREQ_MASK,
732 #ifdef CONFIG_REGULATOR
733 static int ldo_regulator_is_enabled(struct regulator_dev *dev)
735 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
740 static int ldo_regulator_enable(struct regulator_dev *dev)
742 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
743 struct snd_soc_codec *codec = (struct snd_soc_codec *)ldo->codec_data;
746 if (ldo_regulator_is_enabled(dev))
749 /* set regulator value firstly */
750 reg = (1600 - ldo->voltage / 1000) / 50;
751 reg = clamp(reg, 0x0, 0xf);
753 /* amend the voltage value, unit: uV */
754 ldo->voltage = (1600 - reg * 50) * 1000;
756 /* set voltage to register */
757 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
758 SGTL5000_LINREG_VDDD_MASK, reg);
760 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
761 SGTL5000_LINEREG_D_POWERUP,
762 SGTL5000_LINEREG_D_POWERUP);
764 /* when internal ldo enabled, simple digital power can be disabled */
765 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
766 SGTL5000_LINREG_SIMPLE_POWERUP,
773 static int ldo_regulator_disable(struct regulator_dev *dev)
775 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
776 struct snd_soc_codec *codec = (struct snd_soc_codec *)ldo->codec_data;
778 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
779 SGTL5000_LINEREG_D_POWERUP,
782 /* clear voltage info */
783 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
784 SGTL5000_LINREG_VDDD_MASK, 0);
791 static int ldo_regulator_get_voltage(struct regulator_dev *dev)
793 struct ldo_regulator *ldo = rdev_get_drvdata(dev);
798 static struct regulator_ops ldo_regulator_ops = {
799 .is_enabled = ldo_regulator_is_enabled,
800 .enable = ldo_regulator_enable,
801 .disable = ldo_regulator_disable,
802 .get_voltage = ldo_regulator_get_voltage,
805 static int ldo_regulator_register(struct snd_soc_codec *codec,
806 struct regulator_init_data *init_data,
809 struct ldo_regulator *ldo;
810 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
812 ldo = kzalloc(sizeof(struct ldo_regulator), GFP_KERNEL);
815 dev_err(codec->dev, "failed to allocate ldo_regulator\n");
819 ldo->desc.name = kstrdup(dev_name(codec->dev), GFP_KERNEL);
820 if (!ldo->desc.name) {
822 dev_err(codec->dev, "failed to allocate decs name memory\n");
826 ldo->desc.type = REGULATOR_VOLTAGE;
827 ldo->desc.owner = THIS_MODULE;
828 ldo->desc.ops = &ldo_regulator_ops;
829 ldo->desc.n_voltages = 1;
831 ldo->codec_data = codec;
832 ldo->voltage = voltage;
834 ldo->dev = regulator_register(&ldo->desc, codec->dev,
835 init_data, ldo, NULL);
836 if (IS_ERR(ldo->dev)) {
837 int ret = PTR_ERR(ldo->dev);
839 dev_err(codec->dev, "failed to register regulator\n");
840 kfree(ldo->desc.name);
850 static int ldo_regulator_remove(struct snd_soc_codec *codec)
852 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
853 struct ldo_regulator *ldo = sgtl5000->ldo;
858 regulator_unregister(ldo->dev);
859 kfree(ldo->desc.name);
865 static int ldo_regulator_register(struct snd_soc_codec *codec,
866 struct regulator_init_data *init_data,
869 dev_err(codec->dev, "this setup needs regulator support in the kernel\n");
873 static int ldo_regulator_remove(struct snd_soc_codec *codec)
881 * common state changes:
883 * off --> standby --> prepare --> on
884 * standby --> prepare --> on
887 * on --> prepare --> standby
889 static int sgtl5000_set_bias_level(struct snd_soc_codec *codec,
890 enum snd_soc_bias_level level)
893 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
896 case SND_SOC_BIAS_ON:
897 case SND_SOC_BIAS_PREPARE:
899 case SND_SOC_BIAS_STANDBY:
900 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
901 ret = regulator_bulk_enable(
902 ARRAY_SIZE(sgtl5000->supplies),
910 case SND_SOC_BIAS_OFF:
911 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
916 codec->dapm.bias_level = level;
920 #define SGTL5000_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
921 SNDRV_PCM_FMTBIT_S20_3LE |\
922 SNDRV_PCM_FMTBIT_S24_LE |\
923 SNDRV_PCM_FMTBIT_S32_LE)
925 static const struct snd_soc_dai_ops sgtl5000_ops = {
926 .hw_params = sgtl5000_pcm_hw_params,
927 .digital_mute = sgtl5000_digital_mute,
928 .set_fmt = sgtl5000_set_dai_fmt,
929 .set_sysclk = sgtl5000_set_dai_sysclk,
932 static struct snd_soc_dai_driver sgtl5000_dai = {
935 .stream_name = "Playback",
939 * only support 8~48K + 96K,
940 * TODO modify hw_param to support more
942 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_96000,
943 .formats = SGTL5000_FORMATS,
946 .stream_name = "Capture",
949 .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_96000,
950 .formats = SGTL5000_FORMATS,
952 .ops = &sgtl5000_ops,
953 .symmetric_rates = 1,
956 static int sgtl5000_volatile_register(struct snd_soc_codec *codec,
960 case SGTL5000_CHIP_ID:
961 case SGTL5000_CHIP_ADCDAC_CTRL:
962 case SGTL5000_CHIP_ANA_STATUS:
969 #ifdef CONFIG_SUSPEND
970 static int sgtl5000_suspend(struct snd_soc_codec *codec)
972 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_OFF);
978 * restore all sgtl5000 registers,
979 * since a big hole between dap and regular registers,
980 * we will restore them respectively.
982 static int sgtl5000_restore_regs(struct snd_soc_codec *codec)
984 u16 *cache = codec->reg_cache;
987 /* restore regular registers */
988 for (reg = 0; reg <= SGTL5000_CHIP_SHORT_CTRL; reg += 2) {
990 /* These regs should restore in particular order */
991 if (reg == SGTL5000_CHIP_ANA_POWER ||
992 reg == SGTL5000_CHIP_CLK_CTRL ||
993 reg == SGTL5000_CHIP_LINREG_CTRL ||
994 reg == SGTL5000_CHIP_LINE_OUT_CTRL ||
995 reg == SGTL5000_CHIP_REF_CTRL)
998 snd_soc_write(codec, reg, cache[reg]);
1001 /* restore dap registers */
1002 for (reg = SGTL5000_DAP_REG_OFFSET; reg < SGTL5000_MAX_REG_OFFSET; reg += 2)
1003 snd_soc_write(codec, reg, cache[reg]);
1006 * restore these regs according to the power setting sequence in
1007 * sgtl5000_set_power_regs() and clock setting sequence in
1008 * sgtl5000_set_clock().
1010 * The order of restore is:
1011 * 1. SGTL5000_CHIP_CLK_CTRL MCLK_FREQ bits (1:0) should be restore after
1012 * SGTL5000_CHIP_ANA_POWER PLL bits set
1013 * 2. SGTL5000_CHIP_LINREG_CTRL should be set before
1014 * SGTL5000_CHIP_ANA_POWER LINREG_D restored
1015 * 3. SGTL5000_CHIP_REF_CTRL controls Analog Ground Voltage,
1016 * prefer to resotre it after SGTL5000_CHIP_ANA_POWER restored
1018 snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL,
1019 cache[SGTL5000_CHIP_LINREG_CTRL]);
1021 snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER,
1022 cache[SGTL5000_CHIP_ANA_POWER]);
1024 snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL,
1025 cache[SGTL5000_CHIP_CLK_CTRL]);
1027 snd_soc_write(codec, SGTL5000_CHIP_REF_CTRL,
1028 cache[SGTL5000_CHIP_REF_CTRL]);
1030 snd_soc_write(codec, SGTL5000_CHIP_LINE_OUT_CTRL,
1031 cache[SGTL5000_CHIP_LINE_OUT_CTRL]);
1035 static int sgtl5000_resume(struct snd_soc_codec *codec)
1037 /* Bring the codec back up to standby to enable regulators */
1038 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1040 /* Restore registers by cached in memory */
1041 sgtl5000_restore_regs(codec);
1045 #define sgtl5000_suspend NULL
1046 #define sgtl5000_resume NULL
1047 #endif /* CONFIG_SUSPEND */
1050 * sgtl5000 has 3 internal power supplies:
1051 * 1. VAG, normally set to vdda/2
1052 * 2. chargepump, set to different value
1053 * according to voltage of vdda and vddio
1054 * 3. line out VAG, normally set to vddio/2
1056 * and should be set according to:
1057 * 1. vddd provided by external or not
1058 * 2. vdda and vddio voltage value. > 3.1v or not
1059 * 3. chip revision >=0x11 or not. If >=0x11, not use external vddd.
1061 static int sgtl5000_set_power_regs(struct snd_soc_codec *codec)
1069 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1071 vdda = regulator_get_voltage(sgtl5000->supplies[VDDA].consumer);
1072 vddio = regulator_get_voltage(sgtl5000->supplies[VDDIO].consumer);
1073 vddd = regulator_get_voltage(sgtl5000->supplies[VDDD].consumer);
1076 vddio = vddio / 1000;
1079 if (vdda <= 0 || vddio <= 0 || vddd < 0) {
1080 dev_err(codec->dev, "regulator voltage not set correctly\n");
1085 /* according to datasheet, maximum voltage of supplies */
1086 if (vdda > 3600 || vddio > 3600 || vddd > 1980) {
1088 "exceed max voltage vdda %dmV vddio %dmV vddd %dmV\n",
1095 ana_pwr = snd_soc_read(codec, SGTL5000_CHIP_ANA_POWER);
1096 ana_pwr |= SGTL5000_DAC_STEREO |
1097 SGTL5000_ADC_STEREO |
1098 SGTL5000_REFTOP_POWERUP;
1099 lreg_ctrl = snd_soc_read(codec, SGTL5000_CHIP_LINREG_CTRL);
1101 if (vddio < 3100 && vdda < 3100) {
1102 /* enable internal oscillator used for charge pump */
1103 snd_soc_update_bits(codec, SGTL5000_CHIP_CLK_TOP_CTRL,
1104 SGTL5000_INT_OSC_EN,
1105 SGTL5000_INT_OSC_EN);
1106 /* Enable VDDC charge pump */
1107 ana_pwr |= SGTL5000_VDDC_CHRGPMP_POWERUP;
1108 } else if (vddio >= 3100 && vdda >= 3100) {
1110 * if vddio and vddd > 3.1v,
1111 * charge pump should be clean before set ana_pwr
1113 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1114 SGTL5000_VDDC_CHRGPMP_POWERUP, 0);
1116 /* VDDC use VDDIO rail */
1117 lreg_ctrl |= SGTL5000_VDDC_ASSN_OVRD;
1118 lreg_ctrl |= SGTL5000_VDDC_MAN_ASSN_VDDIO <<
1119 SGTL5000_VDDC_MAN_ASSN_SHIFT;
1122 snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL, lreg_ctrl);
1124 snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER, ana_pwr);
1126 /* set voltage to register */
1127 snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,
1128 SGTL5000_LINREG_VDDD_MASK, 0x8);
1131 * if vddd linear reg has been enabled,
1132 * simple digital supply should be clear to get
1133 * proper VDDD voltage.
1135 if (ana_pwr & SGTL5000_LINEREG_D_POWERUP)
1136 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1137 SGTL5000_LINREG_SIMPLE_POWERUP,
1140 snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,
1141 SGTL5000_LINREG_SIMPLE_POWERUP |
1142 SGTL5000_STARTUP_POWERUP,
1146 * set ADC/DAC VAG to vdda / 2,
1147 * should stay in range (0.8v, 1.575v)
1150 if (vag <= SGTL5000_ANA_GND_BASE)
1152 else if (vag >= SGTL5000_ANA_GND_BASE + SGTL5000_ANA_GND_STP *
1153 (SGTL5000_ANA_GND_MASK >> SGTL5000_ANA_GND_SHIFT))
1154 vag = SGTL5000_ANA_GND_MASK >> SGTL5000_ANA_GND_SHIFT;
1156 vag = (vag - SGTL5000_ANA_GND_BASE) / SGTL5000_ANA_GND_STP;
1158 snd_soc_update_bits(codec, SGTL5000_CHIP_REF_CTRL,
1159 SGTL5000_ANA_GND_MASK, vag << SGTL5000_ANA_GND_SHIFT);
1161 /* set line out VAG to vddio / 2, in range (0.8v, 1.675v) */
1163 if (vag <= SGTL5000_LINE_OUT_GND_BASE)
1165 else if (vag >= SGTL5000_LINE_OUT_GND_BASE +
1166 SGTL5000_LINE_OUT_GND_STP * SGTL5000_LINE_OUT_GND_MAX)
1167 vag = SGTL5000_LINE_OUT_GND_MAX;
1169 vag = (vag - SGTL5000_LINE_OUT_GND_BASE) /
1170 SGTL5000_LINE_OUT_GND_STP;
1172 snd_soc_update_bits(codec, SGTL5000_CHIP_LINE_OUT_CTRL,
1173 SGTL5000_LINE_OUT_CURRENT_MASK |
1174 SGTL5000_LINE_OUT_GND_MASK,
1175 vag << SGTL5000_LINE_OUT_GND_SHIFT |
1176 SGTL5000_LINE_OUT_CURRENT_360u <<
1177 SGTL5000_LINE_OUT_CURRENT_SHIFT);
1182 static int sgtl5000_replace_vddd_with_ldo(struct snd_soc_codec *codec)
1184 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1187 /* set internal ldo to 1.2v */
1188 ret = ldo_regulator_register(codec, &ldo_init_data, LDO_VOLTAGE);
1191 "Failed to register vddd internal supplies: %d\n", ret);
1195 sgtl5000->supplies[VDDD].supply = LDO_CONSUMER_NAME;
1197 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
1198 sgtl5000->supplies);
1201 ldo_regulator_remove(codec);
1202 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
1206 dev_info(codec->dev, "Using internal LDO instead of VDDD\n");
1210 static int sgtl5000_enable_regulators(struct snd_soc_codec *codec)
1216 int external_vddd = 0;
1217 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1219 for (i = 0; i < ARRAY_SIZE(sgtl5000->supplies); i++)
1220 sgtl5000->supplies[i].supply = supply_names[i];
1222 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
1223 sgtl5000->supplies);
1227 ret = sgtl5000_replace_vddd_with_ldo(codec);
1232 ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
1233 sgtl5000->supplies);
1235 goto err_regulator_free;
1237 /* wait for all power rails bring up */
1240 /* read chip information */
1241 reg = snd_soc_read(codec, SGTL5000_CHIP_ID);
1242 if (((reg & SGTL5000_PARTID_MASK) >> SGTL5000_PARTID_SHIFT) !=
1243 SGTL5000_PARTID_PART_ID) {
1245 "Device with ID register %x is not a sgtl5000\n", reg);
1247 goto err_regulator_disable;
1250 rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT;
1251 dev_info(codec->dev, "sgtl5000 revision 0x%x\n", rev);
1254 * workaround for revision 0x11 and later,
1255 * roll back to use internal LDO
1257 if (external_vddd && rev >= 0x11) {
1258 /* disable all regulator first */
1259 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1260 sgtl5000->supplies);
1261 /* free VDDD regulator */
1262 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1263 sgtl5000->supplies);
1265 ret = sgtl5000_replace_vddd_with_ldo(codec);
1269 ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
1270 sgtl5000->supplies);
1272 goto err_regulator_free;
1274 /* wait for all power rails bring up */
1280 err_regulator_disable:
1281 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1282 sgtl5000->supplies);
1284 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1285 sgtl5000->supplies);
1287 ldo_regulator_remove(codec);
1292 static int sgtl5000_probe(struct snd_soc_codec *codec)
1295 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1297 /* setup i2c data ops */
1298 ret = snd_soc_codec_set_cache_io(codec, 16, 16, SND_SOC_I2C);
1300 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1304 ret = sgtl5000_enable_regulators(codec);
1308 /* power up sgtl5000 */
1309 ret = sgtl5000_set_power_regs(codec);
1313 /* enable small pop, introduce 400ms delay in turning off */
1314 snd_soc_update_bits(codec, SGTL5000_CHIP_REF_CTRL,
1316 SGTL5000_SMALL_POP);
1318 /* disable short cut detector */
1319 snd_soc_write(codec, SGTL5000_CHIP_SHORT_CTRL, 0);
1322 * set i2s as default input of sound switch
1323 * TODO: add sound switch to control and dapm widge.
1325 snd_soc_write(codec, SGTL5000_CHIP_SSS_CTRL,
1326 SGTL5000_DAC_SEL_I2S_IN << SGTL5000_DAC_SEL_SHIFT);
1327 snd_soc_write(codec, SGTL5000_CHIP_DIG_POWER,
1328 SGTL5000_ADC_EN | SGTL5000_DAC_EN);
1330 /* enable dac volume ramp by default */
1331 snd_soc_write(codec, SGTL5000_CHIP_ADCDAC_CTRL,
1332 SGTL5000_DAC_VOL_RAMP_EN |
1333 SGTL5000_DAC_MUTE_RIGHT |
1334 SGTL5000_DAC_MUTE_LEFT);
1336 snd_soc_write(codec, SGTL5000_CHIP_PAD_STRENGTH, 0x015f);
1338 snd_soc_write(codec, SGTL5000_CHIP_ANA_CTRL,
1339 SGTL5000_HP_ZCD_EN |
1340 SGTL5000_ADC_ZCD_EN);
1342 snd_soc_write(codec, SGTL5000_CHIP_MIC_CTRL, 0);
1347 * Enable DAP in kcontrol and dapm.
1349 snd_soc_write(codec, SGTL5000_DAP_CTRL, 0);
1351 /* leading to standby state */
1352 ret = sgtl5000_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1356 snd_soc_dapm_new_widgets(&codec->dapm);
1361 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1362 sgtl5000->supplies);
1363 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1364 sgtl5000->supplies);
1365 ldo_regulator_remove(codec);
1370 static int sgtl5000_remove(struct snd_soc_codec *codec)
1372 struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
1374 sgtl5000_set_bias_level(codec, SND_SOC_BIAS_OFF);
1376 regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
1377 sgtl5000->supplies);
1378 regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
1379 sgtl5000->supplies);
1380 ldo_regulator_remove(codec);
1385 static struct snd_soc_codec_driver sgtl5000_driver = {
1386 .probe = sgtl5000_probe,
1387 .remove = sgtl5000_remove,
1388 .suspend = sgtl5000_suspend,
1389 .resume = sgtl5000_resume,
1390 .set_bias_level = sgtl5000_set_bias_level,
1391 .reg_cache_size = ARRAY_SIZE(sgtl5000_regs),
1392 .reg_word_size = sizeof(u16),
1393 .reg_cache_step = 2,
1394 .reg_cache_default = sgtl5000_regs,
1395 .volatile_register = sgtl5000_volatile_register,
1396 .controls = sgtl5000_snd_controls,
1397 .num_controls = ARRAY_SIZE(sgtl5000_snd_controls),
1398 .dapm_widgets = sgtl5000_dapm_widgets,
1399 .num_dapm_widgets = ARRAY_SIZE(sgtl5000_dapm_widgets),
1400 .dapm_routes = sgtl5000_dapm_routes,
1401 .num_dapm_routes = ARRAY_SIZE(sgtl5000_dapm_routes),
1404 static __devinit int sgtl5000_i2c_probe(struct i2c_client *client,
1405 const struct i2c_device_id *id)
1407 struct sgtl5000_priv *sgtl5000;
1410 sgtl5000 = devm_kzalloc(&client->dev, sizeof(struct sgtl5000_priv),
1415 i2c_set_clientdata(client, sgtl5000);
1417 ret = snd_soc_register_codec(&client->dev,
1418 &sgtl5000_driver, &sgtl5000_dai, 1);
1422 static __devexit int sgtl5000_i2c_remove(struct i2c_client *client)
1424 snd_soc_unregister_codec(&client->dev);
1429 static const struct i2c_device_id sgtl5000_id[] = {
1434 MODULE_DEVICE_TABLE(i2c, sgtl5000_id);
1436 static const struct of_device_id sgtl5000_dt_ids[] = {
1437 { .compatible = "fsl,sgtl5000", },
1440 MODULE_DEVICE_TABLE(of, sgtl5000_dt_ids);
1442 static struct i2c_driver sgtl5000_i2c_driver = {
1445 .owner = THIS_MODULE,
1446 .of_match_table = sgtl5000_dt_ids,
1448 .probe = sgtl5000_i2c_probe,
1449 .remove = __devexit_p(sgtl5000_i2c_remove),
1450 .id_table = sgtl5000_id,
1453 module_i2c_driver(sgtl5000_i2c_driver);
1455 MODULE_DESCRIPTION("Freescale SGTL5000 ALSA SoC Codec Driver");
1456 MODULE_AUTHOR("Zeng Zhaoming <zengzm.kernel@gmail.com>");
1457 MODULE_LICENSE("GPL");