1
// SPDX-License-Identifier: GPL-2.0-or-later
3
* This driver supports the digital controls for the internal codec
4
* found in Allwinner's A33 SoCs.
6
* (C) Copyright 2010-2016
7
* Reuuimlla Technology Co., Ltd. <www.reuuimllatech.com>
8
* huangxin <huangxin@Reuuimllatech.com>
9
* Mylène Josserand <mylene.josserand@free-electrons.com>
12
#include <linux/module.h>
13
#include <linux/delay.h>
14
#include <linux/clk.h>
16
#include <linux/pm_runtime.h>
17
#include <linux/regmap.h>
18
#include <linux/log2.h>
20
#include <sound/pcm_params.h>
21
#include <sound/soc.h>
22
#include <sound/soc-dapm.h>
24
#define SUN8I_SYSCLK_CTL 0x00c
25
#define SUN8I_SYSCLK_CTL_AIF1CLK_ENA 11
26
#define SUN8I_SYSCLK_CTL_AIF1CLK_SRC_PLL 9
27
#define SUN8I_SYSCLK_CTL_AIF1CLK_SRC 8
28
#define SUN8I_SYSCLK_CTL_SYSCLK_ENA 3
29
#define SUN8I_SYSCLK_CTL_SYSCLK_SRC 0
30
#define SUN8I_MOD_CLK_ENA 0x010
31
#define SUN8I_MOD_CLK_ENA_AIF1 15
32
#define SUN8I_MOD_CLK_ENA_ADC 3
33
#define SUN8I_MOD_CLK_ENA_DAC 2
34
#define SUN8I_MOD_RST_CTL 0x014
35
#define SUN8I_MOD_RST_CTL_AIF1 15
36
#define SUN8I_MOD_RST_CTL_ADC 3
37
#define SUN8I_MOD_RST_CTL_DAC 2
38
#define SUN8I_SYS_SR_CTRL 0x018
39
#define SUN8I_SYS_SR_CTRL_AIF1_FS 12
40
#define SUN8I_SYS_SR_CTRL_AIF2_FS 8
41
#define SUN8I_AIF1CLK_CTRL 0x040
42
#define SUN8I_AIF1CLK_CTRL_AIF1_MSTR_MOD 15
43
#define SUN8I_AIF1CLK_CTRL_AIF1_BCLK_INV 14
44
#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_INV 13
45
#define SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV 9
46
#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV 6
47
#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ 4
48
#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_16 (1 << 4)
49
#define SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT 2
50
#define SUN8I_AIF1_ADCDAT_CTRL 0x044
51
#define SUN8I_AIF1_ADCDAT_CTRL_AIF1_DA0L_ENA 15
52
#define SUN8I_AIF1_ADCDAT_CTRL_AIF1_DA0R_ENA 14
53
#define SUN8I_AIF1_DACDAT_CTRL 0x048
54
#define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_ENA 15
55
#define SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_ENA 14
56
#define SUN8I_AIF1_MXR_SRC 0x04c
57
#define SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_AIF1DA0L 15
58
#define SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_AIF2DACL 14
59
#define SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_ADCL 13
60
#define SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_AIF2DACR 12
61
#define SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_AIF1DA0R 11
62
#define SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_AIF2DACR 10
63
#define SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_ADCR 9
64
#define SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_AIF2DACL 8
65
#define SUN8I_ADC_DIG_CTRL 0x100
66
#define SUN8I_ADC_DIG_CTRL_ENDA 15
67
#define SUN8I_ADC_DIG_CTRL_ADOUT_DTS 2
68
#define SUN8I_ADC_DIG_CTRL_ADOUT_DLY 1
69
#define SUN8I_DAC_DIG_CTRL 0x120
70
#define SUN8I_DAC_DIG_CTRL_ENDA 15
71
#define SUN8I_DAC_MXR_SRC 0x130
72
#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA0L 15
73
#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA1L 14
74
#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF2DACL 13
75
#define SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_ADCL 12
76
#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA0R 11
77
#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA1R 10
78
#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF2DACR 9
79
#define SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_ADCR 8
81
#define SUN8I_SYS_SR_CTRL_AIF1_FS_MASK GENMASK(15, 12)
82
#define SUN8I_SYS_SR_CTRL_AIF2_FS_MASK GENMASK(11, 8)
83
#define SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_MASK GENMASK(5, 4)
84
#define SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_MASK GENMASK(8, 6)
85
#define SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV_MASK GENMASK(12, 9)
89
struct regmap *regmap;
90
struct clk *clk_module;
94
static int sun8i_codec_runtime_resume(struct device *dev)
96
struct sun8i_codec *scodec = dev_get_drvdata(dev);
99
ret = clk_prepare_enable(scodec->clk_module);
101
dev_err(dev, "Failed to enable the module clock\n");
105
ret = clk_prepare_enable(scodec->clk_bus);
107
dev_err(dev, "Failed to enable the bus clock\n");
108
goto err_disable_modclk;
111
regcache_cache_only(scodec->regmap, false);
113
ret = regcache_sync(scodec->regmap);
115
dev_err(dev, "Failed to sync regmap cache\n");
116
goto err_disable_clk;
122
clk_disable_unprepare(scodec->clk_bus);
125
clk_disable_unprepare(scodec->clk_module);
130
static int sun8i_codec_runtime_suspend(struct device *dev)
132
struct sun8i_codec *scodec = dev_get_drvdata(dev);
134
regcache_cache_only(scodec->regmap, true);
135
regcache_mark_dirty(scodec->regmap);
137
clk_disable_unprepare(scodec->clk_module);
138
clk_disable_unprepare(scodec->clk_bus);
143
static int sun8i_codec_get_hw_rate(struct snd_pcm_hw_params *params)
145
unsigned int rate = params_rate(params);
176
static int sun8i_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
178
struct sun8i_codec *scodec = snd_soc_component_get_drvdata(dai->component);
182
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
183
case SND_SOC_DAIFMT_CBS_CFS: /* Codec slave, DAI master */
186
case SND_SOC_DAIFMT_CBM_CFM: /* Codec Master, DAI slave */
192
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
193
BIT(SUN8I_AIF1CLK_CTRL_AIF1_MSTR_MOD),
194
value << SUN8I_AIF1CLK_CTRL_AIF1_MSTR_MOD);
196
/* clock inversion */
197
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
198
case SND_SOC_DAIFMT_NB_NF: /* Normal */
201
case SND_SOC_DAIFMT_IB_IF: /* Inversion */
207
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
208
BIT(SUN8I_AIF1CLK_CTRL_AIF1_BCLK_INV),
209
value << SUN8I_AIF1CLK_CTRL_AIF1_BCLK_INV);
212
* It appears that the DAI and the codec don't share the same
213
* polarity for the LRCK signal when they mean 'normal' and
214
* 'inverted' in the datasheet.
216
* Since the DAI here is our regular i2s driver that have been
217
* tested with way more codecs than just this one, it means
218
* that the codec probably gets it backward, and we have to
219
* invert the value here.
221
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
222
BIT(SUN8I_AIF1CLK_CTRL_AIF1_LRCK_INV),
223
!value << SUN8I_AIF1CLK_CTRL_AIF1_LRCK_INV);
226
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
227
case SND_SOC_DAIFMT_I2S:
230
case SND_SOC_DAIFMT_LEFT_J:
233
case SND_SOC_DAIFMT_RIGHT_J:
236
case SND_SOC_DAIFMT_DSP_A:
237
case SND_SOC_DAIFMT_DSP_B:
243
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
244
BIT(SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT),
245
value << SUN8I_AIF1CLK_CTRL_AIF1_DATA_FMT);
250
struct sun8i_codec_clk_div {
255
static const struct sun8i_codec_clk_div sun8i_codec_bclk_div[] = {
256
{ .div = 1, .val = 0 },
257
{ .div = 2, .val = 1 },
258
{ .div = 4, .val = 2 },
259
{ .div = 6, .val = 3 },
260
{ .div = 8, .val = 4 },
261
{ .div = 12, .val = 5 },
262
{ .div = 16, .val = 6 },
263
{ .div = 24, .val = 7 },
264
{ .div = 32, .val = 8 },
265
{ .div = 48, .val = 9 },
266
{ .div = 64, .val = 10 },
267
{ .div = 96, .val = 11 },
268
{ .div = 128, .val = 12 },
269
{ .div = 192, .val = 13 },
272
static u8 sun8i_codec_get_bclk_div(struct sun8i_codec *scodec,
274
unsigned int word_size)
276
unsigned long clk_rate = clk_get_rate(scodec->clk_module);
277
unsigned int div = clk_rate / rate / word_size / 2;
278
unsigned int best_val = 0, best_diff = ~0;
281
for (i = 0; i < ARRAY_SIZE(sun8i_codec_bclk_div); i++) {
282
const struct sun8i_codec_clk_div *bdiv = &sun8i_codec_bclk_div[i];
283
unsigned int diff = abs(bdiv->div - div);
285
if (diff < best_diff) {
287
best_val = bdiv->val;
294
static int sun8i_codec_get_lrck_div(unsigned int channels,
295
unsigned int word_size)
297
unsigned int div = word_size * channels;
299
if (div < 16 || div > 256)
302
return ilog2(div) - 4;
305
static int sun8i_codec_hw_params(struct snd_pcm_substream *substream,
306
struct snd_pcm_hw_params *params,
307
struct snd_soc_dai *dai)
309
struct sun8i_codec *scodec = snd_soc_component_get_drvdata(dai->component);
310
int sample_rate, lrck_div;
314
* The CPU DAI handles only a sample of 16 bits. Configure the
315
* codec to handle this type of sample resolution.
317
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
318
SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_MASK,
319
SUN8I_AIF1CLK_CTRL_AIF1_WORD_SIZ_16);
321
bclk_div = sun8i_codec_get_bclk_div(scodec, params_rate(params), 16);
322
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
323
SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV_MASK,
324
bclk_div << SUN8I_AIF1CLK_CTRL_AIF1_BCLK_DIV);
326
lrck_div = sun8i_codec_get_lrck_div(params_channels(params),
327
params_physical_width(params));
331
regmap_update_bits(scodec->regmap, SUN8I_AIF1CLK_CTRL,
332
SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV_MASK,
333
lrck_div << SUN8I_AIF1CLK_CTRL_AIF1_LRCK_DIV);
335
sample_rate = sun8i_codec_get_hw_rate(params);
339
regmap_update_bits(scodec->regmap, SUN8I_SYS_SR_CTRL,
340
SUN8I_SYS_SR_CTRL_AIF1_FS_MASK,
341
sample_rate << SUN8I_SYS_SR_CTRL_AIF1_FS);
342
regmap_update_bits(scodec->regmap, SUN8I_SYS_SR_CTRL,
343
SUN8I_SYS_SR_CTRL_AIF2_FS_MASK,
344
sample_rate << SUN8I_SYS_SR_CTRL_AIF2_FS);
349
static const struct snd_kcontrol_new sun8i_dac_mixer_controls[] = {
350
SOC_DAPM_DOUBLE("AIF1 Slot 0 Digital DAC Playback Switch",
352
SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA0L,
353
SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA0R, 1, 0),
354
SOC_DAPM_DOUBLE("AIF1 Slot 1 Digital DAC Playback Switch",
356
SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF1DA1L,
357
SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF1DA1R, 1, 0),
358
SOC_DAPM_DOUBLE("AIF2 Digital DAC Playback Switch", SUN8I_DAC_MXR_SRC,
359
SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_AIF2DACL,
360
SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_AIF2DACR, 1, 0),
361
SOC_DAPM_DOUBLE("ADC Digital DAC Playback Switch", SUN8I_DAC_MXR_SRC,
362
SUN8I_DAC_MXR_SRC_DACL_MXR_SRC_ADCL,
363
SUN8I_DAC_MXR_SRC_DACR_MXR_SRC_ADCR, 1, 0),
366
static const struct snd_kcontrol_new sun8i_input_mixer_controls[] = {
367
SOC_DAPM_DOUBLE("AIF1 Slot 0 Digital ADC Capture Switch",
369
SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_AIF1DA0L,
370
SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_AIF1DA0R, 1, 0),
371
SOC_DAPM_DOUBLE("AIF2 Digital ADC Capture Switch", SUN8I_AIF1_MXR_SRC,
372
SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_AIF2DACL,
373
SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_AIF2DACR, 1, 0),
374
SOC_DAPM_DOUBLE("AIF1 Data Digital ADC Capture Switch",
376
SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_ADCL,
377
SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_ADCR, 1, 0),
378
SOC_DAPM_DOUBLE("AIF2 Inv Digital ADC Capture Switch",
380
SUN8I_AIF1_MXR_SRC_AD0L_MXL_SRC_AIF2DACR,
381
SUN8I_AIF1_MXR_SRC_AD0R_MXR_SRC_AIF2DACL, 1, 0),
384
static const struct snd_soc_dapm_widget sun8i_codec_dapm_widgets[] = {
385
/* Digital parts of the DACs and ADC */
386
SND_SOC_DAPM_SUPPLY("DAC", SUN8I_DAC_DIG_CTRL, SUN8I_DAC_DIG_CTRL_ENDA,
388
SND_SOC_DAPM_SUPPLY("ADC", SUN8I_ADC_DIG_CTRL, SUN8I_ADC_DIG_CTRL_ENDA,
392
SND_SOC_DAPM_AIF_IN("AIF1 Slot 0 Left", "Playback", 0,
393
SUN8I_AIF1_DACDAT_CTRL,
394
SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0L_ENA, 0),
395
SND_SOC_DAPM_AIF_IN("AIF1 Slot 0 Right", "Playback", 0,
396
SUN8I_AIF1_DACDAT_CTRL,
397
SUN8I_AIF1_DACDAT_CTRL_AIF1_DA0R_ENA, 0),
400
SND_SOC_DAPM_AIF_IN("AIF1 Slot 0 Left ADC", "Capture", 0,
401
SUN8I_AIF1_ADCDAT_CTRL,
402
SUN8I_AIF1_ADCDAT_CTRL_AIF1_DA0L_ENA, 0),
403
SND_SOC_DAPM_AIF_IN("AIF1 Slot 0 Right ADC", "Capture", 0,
404
SUN8I_AIF1_ADCDAT_CTRL,
405
SUN8I_AIF1_ADCDAT_CTRL_AIF1_DA0R_ENA, 0),
407
/* DAC and ADC Mixers */
408
SOC_MIXER_ARRAY("Left Digital DAC Mixer", SND_SOC_NOPM, 0, 0,
409
sun8i_dac_mixer_controls),
410
SOC_MIXER_ARRAY("Right Digital DAC Mixer", SND_SOC_NOPM, 0, 0,
411
sun8i_dac_mixer_controls),
412
SOC_MIXER_ARRAY("Left Digital ADC Mixer", SND_SOC_NOPM, 0, 0,
413
sun8i_input_mixer_controls),
414
SOC_MIXER_ARRAY("Right Digital ADC Mixer", SND_SOC_NOPM, 0, 0,
415
sun8i_input_mixer_controls),
418
SND_SOC_DAPM_SUPPLY("MODCLK AFI1", SUN8I_MOD_CLK_ENA,
419
SUN8I_MOD_CLK_ENA_AIF1, 0, NULL, 0),
420
SND_SOC_DAPM_SUPPLY("MODCLK DAC", SUN8I_MOD_CLK_ENA,
421
SUN8I_MOD_CLK_ENA_DAC, 0, NULL, 0),
422
SND_SOC_DAPM_SUPPLY("MODCLK ADC", SUN8I_MOD_CLK_ENA,
423
SUN8I_MOD_CLK_ENA_ADC, 0, NULL, 0),
424
SND_SOC_DAPM_SUPPLY("AIF1", SUN8I_SYSCLK_CTL,
425
SUN8I_SYSCLK_CTL_AIF1CLK_ENA, 0, NULL, 0),
426
SND_SOC_DAPM_SUPPLY("SYSCLK", SUN8I_SYSCLK_CTL,
427
SUN8I_SYSCLK_CTL_SYSCLK_ENA, 0, NULL, 0),
429
SND_SOC_DAPM_SUPPLY("AIF1 PLL", SUN8I_SYSCLK_CTL,
430
SUN8I_SYSCLK_CTL_AIF1CLK_SRC_PLL, 0, NULL, 0),
431
/* Inversion as 0=AIF1, 1=AIF2 */
432
SND_SOC_DAPM_SUPPLY("SYSCLK AIF1", SUN8I_SYSCLK_CTL,
433
SUN8I_SYSCLK_CTL_SYSCLK_SRC, 1, NULL, 0),
436
SND_SOC_DAPM_SUPPLY("RST AIF1", SUN8I_MOD_RST_CTL,
437
SUN8I_MOD_RST_CTL_AIF1, 0, NULL, 0),
438
SND_SOC_DAPM_SUPPLY("RST DAC", SUN8I_MOD_RST_CTL,
439
SUN8I_MOD_RST_CTL_DAC, 0, NULL, 0),
440
SND_SOC_DAPM_SUPPLY("RST ADC", SUN8I_MOD_RST_CTL,
441
SUN8I_MOD_RST_CTL_ADC, 0, NULL, 0),
443
SND_SOC_DAPM_MIC("Headset Mic", NULL),
444
SND_SOC_DAPM_MIC("Mic", NULL),
448
static const struct snd_soc_dapm_route sun8i_codec_dapm_routes[] = {
450
{ "AIF1", NULL, "SYSCLK AIF1" },
451
{ "AIF1 PLL", NULL, "AIF1" },
452
{ "RST AIF1", NULL, "AIF1 PLL" },
453
{ "MODCLK AFI1", NULL, "RST AIF1" },
454
{ "DAC", NULL, "MODCLK AFI1" },
455
{ "ADC", NULL, "MODCLK AFI1" },
457
{ "RST DAC", NULL, "SYSCLK" },
458
{ "MODCLK DAC", NULL, "RST DAC" },
459
{ "DAC", NULL, "MODCLK DAC" },
461
{ "RST ADC", NULL, "SYSCLK" },
462
{ "MODCLK ADC", NULL, "RST ADC" },
463
{ "ADC", NULL, "MODCLK ADC" },
466
{ "AIF1 Slot 0 Right", NULL, "DAC" },
467
{ "AIF1 Slot 0 Left", NULL, "DAC" },
469
/* DAC Mixer Routes */
470
{ "Left Digital DAC Mixer", "AIF1 Slot 0 Digital DAC Playback Switch",
472
{ "Right Digital DAC Mixer", "AIF1 Slot 0 Digital DAC Playback Switch",
473
"AIF1 Slot 0 Right"},
476
{ "AIF1 Slot 0 Right ADC", NULL, "ADC" },
477
{ "AIF1 Slot 0 Left ADC", NULL, "ADC" },
479
/* ADC Mixer Routes */
480
{ "Left Digital ADC Mixer", "AIF1 Data Digital ADC Capture Switch",
481
"AIF1 Slot 0 Left ADC" },
482
{ "Right Digital ADC Mixer", "AIF1 Data Digital ADC Capture Switch",
483
"AIF1 Slot 0 Right ADC" },
486
static const struct snd_soc_dai_ops sun8i_codec_dai_ops = {
487
.hw_params = sun8i_codec_hw_params,
488
.set_fmt = sun8i_set_fmt,
491
static struct snd_soc_dai_driver sun8i_codec_dai = {
493
/* playback capabilities */
495
.stream_name = "Playback",
498
.rates = SNDRV_PCM_RATE_8000_192000,
499
.formats = SNDRV_PCM_FMTBIT_S16_LE,
501
/* capture capabilities */
503
.stream_name = "Capture",
506
.rates = SNDRV_PCM_RATE_8000_192000,
507
.formats = SNDRV_PCM_FMTBIT_S16_LE,
511
.ops = &sun8i_codec_dai_ops,
514
static const struct snd_soc_component_driver sun8i_soc_component = {
515
.dapm_widgets = sun8i_codec_dapm_widgets,
516
.num_dapm_widgets = ARRAY_SIZE(sun8i_codec_dapm_widgets),
517
.dapm_routes = sun8i_codec_dapm_routes,
518
.num_dapm_routes = ARRAY_SIZE(sun8i_codec_dapm_routes),
520
.use_pmdown_time = 1,
522
.non_legacy_dai_naming = 1,
525
static const struct regmap_config sun8i_codec_regmap_config = {
529
.max_register = SUN8I_DAC_MXR_SRC,
531
.cache_type = REGCACHE_FLAT,
534
static int sun8i_codec_probe(struct platform_device *pdev)
536
struct sun8i_codec *scodec;
540
scodec = devm_kzalloc(&pdev->dev, sizeof(*scodec), GFP_KERNEL);
544
scodec->dev = &pdev->dev;
546
scodec->clk_module = devm_clk_get(&pdev->dev, "mod");
547
if (IS_ERR(scodec->clk_module)) {
548
dev_err(&pdev->dev, "Failed to get the module clock\n");
549
return PTR_ERR(scodec->clk_module);
552
scodec->clk_bus = devm_clk_get(&pdev->dev, "bus");
553
if (IS_ERR(scodec->clk_bus)) {
554
dev_err(&pdev->dev, "Failed to get the bus clock\n");
555
return PTR_ERR(scodec->clk_bus);
558
base = devm_platform_ioremap_resource(pdev, 0);
560
dev_err(&pdev->dev, "Failed to map the registers\n");
561
return PTR_ERR(base);
564
scodec->regmap = devm_regmap_init_mmio(&pdev->dev, base,
565
&sun8i_codec_regmap_config);
566
if (IS_ERR(scodec->regmap)) {
567
dev_err(&pdev->dev, "Failed to create our regmap\n");
568
return PTR_ERR(scodec->regmap);
571
platform_set_drvdata(pdev, scodec);
573
pm_runtime_enable(&pdev->dev);
574
if (!pm_runtime_enabled(&pdev->dev)) {
575
ret = sun8i_codec_runtime_resume(&pdev->dev);
580
ret = devm_snd_soc_register_component(&pdev->dev, &sun8i_soc_component,
581
&sun8i_codec_dai, 1);
583
dev_err(&pdev->dev, "Failed to register codec\n");
590
if (!pm_runtime_status_suspended(&pdev->dev))
591
sun8i_codec_runtime_suspend(&pdev->dev);
594
pm_runtime_disable(&pdev->dev);
599
static int sun8i_codec_remove(struct platform_device *pdev)
601
pm_runtime_disable(&pdev->dev);
602
if (!pm_runtime_status_suspended(&pdev->dev))
603
sun8i_codec_runtime_suspend(&pdev->dev);
608
static const struct of_device_id sun8i_codec_of_match[] = {
609
{ .compatible = "allwinner,sun8i-a33-codec" },
612
MODULE_DEVICE_TABLE(of, sun8i_codec_of_match);
614
static const struct dev_pm_ops sun8i_codec_pm_ops = {
615
SET_RUNTIME_PM_OPS(sun8i_codec_runtime_suspend,
616
sun8i_codec_runtime_resume, NULL)
619
static struct platform_driver sun8i_codec_driver = {
621
.name = "sun8i-codec",
622
.of_match_table = sun8i_codec_of_match,
623
.pm = &sun8i_codec_pm_ops,
625
.probe = sun8i_codec_probe,
626
.remove = sun8i_codec_remove,
628
module_platform_driver(sun8i_codec_driver);
630
MODULE_DESCRIPTION("Allwinner A33 (sun8i) codec driver");
631
MODULE_AUTHOR("Mylène Josserand <mylene.josserand@free-electrons.com>");
632
MODULE_LICENSE("GPL");
633
MODULE_ALIAS("platform:sun8i-codec");