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Merge branch 'for-linus' of git://git.kernel.dk/linux-block
[deliverable/linux.git] / sound / soc / codecs / max98090.c
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83f7cbc4
KM		 1/*
2 * max98090.c -- MAX98090 ALSA SoC Audio driver
3 * based on Rev0p8 datasheet
4 *
5 * Copyright (C) 2012 Renesas Solutions Corp.
6 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
7 *
8 * Based on
9 *
10 * max98095.c
11 * Copyright 2011 Maxim Integrated Products
12 *
13 * https://github.com/hardkernel/linux/commit/\
14 * 3417d7166b17113b3b33b0a337c74d1c7cc313df#sound/soc/codecs/max98090.c
15 * Copyright 2011 Maxim Integrated Products
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License version 2 as
19 * published by the Free Software Foundation.
20 */
21
22#include <linux/i2c.h>
23#include <linux/module.h>
24#include <linux/regmap.h>
25#include <sound/soc.h>
26#include <sound/tlv.h>
27
28/*
29 *
30 * MAX98090 Registers Definition
31 *
32 */
33
34/* RESET / STATUS / INTERRUPT REGISTERS */
35#define MAX98090_0x00_SW_RESET 0x00
36#define MAX98090_0x01_INT_STS 0x01
37#define MAX98090_0x02_JACK_STS 0x02
38#define MAX98090_0x03_INT_MASK 0x03
39
40/* QUICK SETUP REGISTERS */
41#define MAX98090_0x04_SYS_CLK 0x04
42#define MAX98090_0x05_SAMPLE_RATE 0x05
43#define MAX98090_0x06_DAI_IF 0x06
44#define MAX98090_0x07_DAC_PATH 0x07
45#define MAX98090_0x08_MIC_TO_ADC 0x08
46#define MAX98090_0x09_LINE_TO_ADC 0x09
47#define MAX98090_0x0A_ANALOG_MIC_LOOP 0x0A
48#define MAX98090_0x0B_ANALOG_LINE_LOOP 0x0B
49
50/* ANALOG INPUT CONFIGURATION REGISTERS */
51#define MAX98090_0x0D_INPUT_CONFIG 0x0D
52#define MAX98090_0x0E_LINE_IN_LVL 0x0E
53#define MAX98090_0x0F_LINI_IN_CFG 0x0F
54#define MAX98090_0x10_MIC1_IN_LVL 0x10
55#define MAX98090_0x11_MIC2_IN_LVL 0x11
56
57/* MICROPHONE CONFIGURATION REGISTERS */
58#define MAX98090_0x12_MIC_BIAS_VOL 0x12
59#define MAX98090_0x13_DIGITAL_MIC_CFG 0x13
60#define MAX98090_0x14_DIGITAL_MIC_MODE 0x14
61
62/* ADC PATH AND CONFIGURATION REGISTERS */
63#define MAX98090_0x15_L_ADC_MIX 0x15
64#define MAX98090_0x16_R_ADC_MIX 0x16
65#define MAX98090_0x17_L_ADC_LVL 0x17
66#define MAX98090_0x18_R_ADC_LVL 0x18
67#define MAX98090_0x19_ADC_BIQUAD_LVL 0x19
68#define MAX98090_0x1A_ADC_SIDETONE 0x1A
69
70/* CLOCK CONFIGURATION REGISTERS */
71#define MAX98090_0x1B_SYS_CLK 0x1B
72#define MAX98090_0x1C_CLK_MODE 0x1C
73#define MAX98090_0x1D_ANY_CLK1 0x1D
74#define MAX98090_0x1E_ANY_CLK2 0x1E
75#define MAX98090_0x1F_ANY_CLK3 0x1F
76#define MAX98090_0x20_ANY_CLK4 0x20
77#define MAX98090_0x21_MASTER_MODE 0x21
78
79/* INTERFACE CONTROL REGISTERS */
80#define MAX98090_0x22_DAI_IF_FMT 0x22
81#define MAX98090_0x23_DAI_TDM_FMT1 0x23
82#define MAX98090_0x24_DAI_TDM_FMT2 0x24
83#define MAX98090_0x25_DAI_IO_CFG 0x25
84#define MAX98090_0x26_FILTER_CFG 0x26
85#define MAX98090_0x27_DAI_PLAYBACK_LVL 0x27
86#define MAX98090_0x28_EQ_PLAYBACK_LVL 0x28
87
88/* HEADPHONE CONTROL REGISTERS */
89#define MAX98090_0x29_L_HP_MIX 0x29
90#define MAX98090_0x2A_R_HP_MIX 0x2A
91#define MAX98090_0x2B_HP_CTR 0x2B
92#define MAX98090_0x2C_L_HP_VOL 0x2C
93#define MAX98090_0x2D_R_HP_VOL 0x2D
94
95/* SPEAKER CONFIGURATION REGISTERS */
96#define MAX98090_0x2E_L_SPK_MIX 0x2E
97#define MAX98090_0x2F_R_SPK_MIX 0x2F
98#define MAX98090_0x30_SPK_CTR 0x30
99#define MAX98090_0x31_L_SPK_VOL 0x31
100#define MAX98090_0x32_R_SPK_VOL 0x32
101
102/* ALC CONFIGURATION REGISTERS */
103#define MAX98090_0x33_ALC_TIMING 0x33
104#define MAX98090_0x34_ALC_COMPRESSOR 0x34
105#define MAX98090_0x35_ALC_EXPANDER 0x35
106#define MAX98090_0x36_ALC_GAIN 0x36
107
108/* RECEIVER AND LINE_OUTPUT REGISTERS */
109#define MAX98090_0x37_RCV_LOUT_L_MIX 0x37
110#define MAX98090_0x38_RCV_LOUT_L_CNTL 0x38
111#define MAX98090_0x39_RCV_LOUT_L_VOL 0x39
112#define MAX98090_0x3A_LOUT_R_MIX 0x3A
113#define MAX98090_0x3B_LOUT_R_CNTL 0x3B
114#define MAX98090_0x3C_LOUT_R_VOL 0x3C
115
116/* JACK DETECT AND ENABLE REGISTERS */
117#define MAX98090_0x3D_JACK_DETECT 0x3D
118#define MAX98090_0x3E_IN_ENABLE 0x3E
119#define MAX98090_0x3F_OUT_ENABLE 0x3F
120#define MAX98090_0x40_LVL_CTR 0x40
121#define MAX98090_0x41_DSP_FILTER_ENABLE 0x41
122
123/* BIAS AND POWER MODE CONFIGURATION REGISTERS */
124#define MAX98090_0x42_BIAS_CTR 0x42
125#define MAX98090_0x43_DAC_CTR 0x43
126#define MAX98090_0x44_ADC_CTR 0x44
127#define MAX98090_0x45_DEV_SHUTDOWN 0x45
128
129/* REVISION ID REGISTER */
130#define MAX98090_0xFF_REV_ID 0xFF
131
132#define MAX98090_REG_MAX_CACHED 0x45
133#define MAX98090_REG_END 0xFF
134
135/*
136 *
137 * MAX98090 Registers Bit Fields
138 *
139 */
140
141/* MAX98090_0x06_DAI_IF */
142#define MAX98090_DAI_IF_MASK 0x3F
143#define MAX98090_RJ_M (1 << 5)
144#define MAX98090_RJ_S (1 << 4)
145#define MAX98090_LJ_M (1 << 3)
146#define MAX98090_LJ_S (1 << 2)
147#define MAX98090_I2S_M (1 << 1)
148#define MAX98090_I2S_S (1 << 0)
149
150/* MAX98090_0x45_DEV_SHUTDOWN */
151#define MAX98090_SHDNRUN (1 << 7)
152
153/* codec private data */
154struct max98090_priv {
155 struct regmap *regmap;
156};
157
158static const struct reg_default max98090_reg_defaults[] = {
159 /* RESET / STATUS / INTERRUPT REGISTERS */
160 {MAX98090_0x00_SW_RESET, 0x00},
161 {MAX98090_0x01_INT_STS, 0x00},
162 {MAX98090_0x02_JACK_STS, 0x00},
163 {MAX98090_0x03_INT_MASK, 0x04},
164
165 /* QUICK SETUP REGISTERS */
166 {MAX98090_0x04_SYS_CLK, 0x00},
167 {MAX98090_0x05_SAMPLE_RATE, 0x00},
168 {MAX98090_0x06_DAI_IF, 0x00},
169 {MAX98090_0x07_DAC_PATH, 0x00},
170 {MAX98090_0x08_MIC_TO_ADC, 0x00},
171 {MAX98090_0x09_LINE_TO_ADC, 0x00},
172 {MAX98090_0x0A_ANALOG_MIC_LOOP, 0x00},
173 {MAX98090_0x0B_ANALOG_LINE_LOOP, 0x00},
174
175 /* ANALOG INPUT CONFIGURATION REGISTERS */
176 {MAX98090_0x0D_INPUT_CONFIG, 0x00},
177 {MAX98090_0x0E_LINE_IN_LVL, 0x1B},
178 {MAX98090_0x0F_LINI_IN_CFG, 0x00},
179 {MAX98090_0x10_MIC1_IN_LVL, 0x11},
180 {MAX98090_0x11_MIC2_IN_LVL, 0x11},
181
182 /* MICROPHONE CONFIGURATION REGISTERS */
183 {MAX98090_0x12_MIC_BIAS_VOL, 0x00},
184 {MAX98090_0x13_DIGITAL_MIC_CFG, 0x00},
185 {MAX98090_0x14_DIGITAL_MIC_MODE, 0x00},
186
187 /* ADC PATH AND CONFIGURATION REGISTERS */
188 {MAX98090_0x15_L_ADC_MIX, 0x00},
189 {MAX98090_0x16_R_ADC_MIX, 0x00},
190 {MAX98090_0x17_L_ADC_LVL, 0x03},
191 {MAX98090_0x18_R_ADC_LVL, 0x03},
192 {MAX98090_0x19_ADC_BIQUAD_LVL, 0x00},
193 {MAX98090_0x1A_ADC_SIDETONE, 0x00},
194
195 /* CLOCK CONFIGURATION REGISTERS */
196 {MAX98090_0x1B_SYS_CLK, 0x00},
197 {MAX98090_0x1C_CLK_MODE, 0x00},
198 {MAX98090_0x1D_ANY_CLK1, 0x00},
199 {MAX98090_0x1E_ANY_CLK2, 0x00},
200 {MAX98090_0x1F_ANY_CLK3, 0x00},
201 {MAX98090_0x20_ANY_CLK4, 0x00},
202 {MAX98090_0x21_MASTER_MODE, 0x00},
203
204 /* INTERFACE CONTROL REGISTERS */
205 {MAX98090_0x22_DAI_IF_FMT, 0x00},
206 {MAX98090_0x23_DAI_TDM_FMT1, 0x00},
207 {MAX98090_0x24_DAI_TDM_FMT2, 0x00},
208 {MAX98090_0x25_DAI_IO_CFG, 0x00},
209 {MAX98090_0x26_FILTER_CFG, 0x80},
210 {MAX98090_0x27_DAI_PLAYBACK_LVL, 0x00},
211 {MAX98090_0x28_EQ_PLAYBACK_LVL, 0x00},
212
213 /* HEADPHONE CONTROL REGISTERS */
214 {MAX98090_0x29_L_HP_MIX, 0x00},
215 {MAX98090_0x2A_R_HP_MIX, 0x00},
216 {MAX98090_0x2B_HP_CTR, 0x00},
217 {MAX98090_0x2C_L_HP_VOL, 0x1A},
218 {MAX98090_0x2D_R_HP_VOL, 0x1A},
219
220 /* SPEAKER CONFIGURATION REGISTERS */
221 {MAX98090_0x2E_L_SPK_MIX, 0x00},
222 {MAX98090_0x2F_R_SPK_MIX, 0x00},
223 {MAX98090_0x30_SPK_CTR, 0x00},
224 {MAX98090_0x31_L_SPK_VOL, 0x2C},
225 {MAX98090_0x32_R_SPK_VOL, 0x2C},
226
227 /* ALC CONFIGURATION REGISTERS */
228 {MAX98090_0x33_ALC_TIMING, 0x00},
229 {MAX98090_0x34_ALC_COMPRESSOR, 0x00},
230 {MAX98090_0x35_ALC_EXPANDER, 0x00},
231 {MAX98090_0x36_ALC_GAIN, 0x00},
232
233 /* RECEIVER AND LINE_OUTPUT REGISTERS */
234 {MAX98090_0x37_RCV_LOUT_L_MIX, 0x00},
235 {MAX98090_0x38_RCV_LOUT_L_CNTL, 0x00},
236 {MAX98090_0x39_RCV_LOUT_L_VOL, 0x15},
237 {MAX98090_0x3A_LOUT_R_MIX, 0x00},
238 {MAX98090_0x3B_LOUT_R_CNTL, 0x00},
239 {MAX98090_0x3C_LOUT_R_VOL, 0x15},
240
241 /* JACK DETECT AND ENABLE REGISTERS */
242 {MAX98090_0x3D_JACK_DETECT, 0x00},
243 {MAX98090_0x3E_IN_ENABLE, 0x00},
244 {MAX98090_0x3F_OUT_ENABLE, 0x00},
245 {MAX98090_0x40_LVL_CTR, 0x00},
246 {MAX98090_0x41_DSP_FILTER_ENABLE, 0x00},
247
248 /* BIAS AND POWER MODE CONFIGURATION REGISTERS */
249 {MAX98090_0x42_BIAS_CTR, 0x00},
250 {MAX98090_0x43_DAC_CTR, 0x00},
251 {MAX98090_0x44_ADC_CTR, 0x06},
252 {MAX98090_0x45_DEV_SHUTDOWN, 0x00},
253};
254
255static const unsigned int max98090_hp_tlv[] = {
256 TLV_DB_RANGE_HEAD(5),
257 0x0, 0x6, TLV_DB_SCALE_ITEM(-6700, 400, 0),
258 0x7, 0xE, TLV_DB_SCALE_ITEM(-4000, 300, 0),
259 0xF, 0x15, TLV_DB_SCALE_ITEM(-1700, 200, 0),
260 0x16, 0x1B, TLV_DB_SCALE_ITEM(-400, 100, 0),
261 0x1C, 0x1F, TLV_DB_SCALE_ITEM(150, 50, 0),
262};
263
264static struct snd_kcontrol_new max98090_snd_controls[] = {
265 SOC_DOUBLE_R_TLV("Headphone Volume", MAX98090_0x2C_L_HP_VOL,
266 MAX98090_0x2D_R_HP_VOL, 0, 31, 0, max98090_hp_tlv),
267};
268
269/* Left HeadPhone Mixer Switch */
270static struct snd_kcontrol_new max98090_left_hp_mixer_controls[] = {
271 SOC_DAPM_SINGLE("DACR Switch", MAX98090_0x29_L_HP_MIX, 1, 1, 0),
272 SOC_DAPM_SINGLE("DACL Switch", MAX98090_0x29_L_HP_MIX, 0, 1, 0),
273};
274
275/* Right HeadPhone Mixer Switch */
276static struct snd_kcontrol_new max98090_right_hp_mixer_controls[] = {
277 SOC_DAPM_SINGLE("DACR Switch", MAX98090_0x2A_R_HP_MIX, 1, 1, 0),
278 SOC_DAPM_SINGLE("DACL Switch", MAX98090_0x2A_R_HP_MIX, 0, 1, 0),
279};
280
281static struct snd_soc_dapm_widget max98090_dapm_widgets[] = {
282 /* Output */
283 SND_SOC_DAPM_OUTPUT("HPL"),
284 SND_SOC_DAPM_OUTPUT("HPR"),
285
286 /* PGA */
287 SND_SOC_DAPM_PGA("HPL Out", MAX98090_0x3F_OUT_ENABLE, 7, 0, NULL, 0),
288 SND_SOC_DAPM_PGA("HPR Out", MAX98090_0x3F_OUT_ENABLE, 6, 0, NULL, 0),
289
290 /* Mixer */
291 SND_SOC_DAPM_MIXER("HPL Mixer", SND_SOC_NOPM, 0, 0,
292 max98090_left_hp_mixer_controls,
293 ARRAY_SIZE(max98090_left_hp_mixer_controls)),
294
295 SND_SOC_DAPM_MIXER("HPR Mixer", SND_SOC_NOPM, 0, 0,
296 max98090_right_hp_mixer_controls,
297 ARRAY_SIZE(max98090_right_hp_mixer_controls)),
298
299 /* DAC */
300 SND_SOC_DAPM_DAC("DACL", "Hifi Playback", MAX98090_0x3F_OUT_ENABLE, 0, 0),
301 SND_SOC_DAPM_DAC("DACR", "Hifi Playback", MAX98090_0x3F_OUT_ENABLE, 1, 0),
302};
303
304static struct snd_soc_dapm_route max98090_audio_map[] = {
305 /* Output */
306 {"HPL", NULL, "HPL Out"},
307 {"HPR", NULL, "HPR Out"},
308
309 /* PGA */
310 {"HPL Out", NULL, "HPL Mixer"},
311 {"HPR Out", NULL, "HPR Mixer"},
312
313 /* Mixer*/
314 {"HPL Mixer", "DACR Switch", "DACR"},
315 {"HPL Mixer", "DACL Switch", "DACL"},
316
317 {"HPR Mixer", "DACR Switch", "DACR"},
318 {"HPR Mixer", "DACL Switch", "DACL"},
319};
320
321static bool max98090_volatile(struct device *dev, unsigned int reg)
322{
323 if ((reg == MAX98090_0x01_INT_STS) ||
324 (reg == MAX98090_0x02_JACK_STS) ||
325 (reg > MAX98090_REG_MAX_CACHED))
326 return true;
327
328 return false;
329}
330
331static int max98090_dai_hw_params(struct snd_pcm_substream *substream,
332 struct snd_pcm_hw_params *params,
333 struct snd_soc_dai *dai)
334{
335 struct snd_soc_codec *codec = dai->codec;
336 unsigned int val;
337
338 switch (params_rate(params)) {
339 case 96000:
340 val = 1 << 5;
341 break;
342 case 32000:
343 val = 1 << 4;
344 break;
345 case 48000:
346 val = 1 << 3;
347 break;
348 case 44100:
349 val = 1 << 2;
350 break;
351 case 16000:
352 val = 1 << 1;
353 break;
354 case 8000:
355 val = 1 << 0;
356 break;
357 default:
358 dev_err(codec->dev, "unsupported rate\n");
359 return -EINVAL;
360 }
361 snd_soc_update_bits(codec, MAX98090_0x05_SAMPLE_RATE, 0x03F, val);
362
363 return 0;
364}
365
366static int max98090_dai_set_sysclk(struct snd_soc_dai *dai,
367 int clk_id, unsigned int freq, int dir)
368{
369 struct snd_soc_codec *codec = dai->codec;
370 unsigned int val;
371
372 snd_soc_update_bits(codec, MAX98090_0x45_DEV_SHUTDOWN,
373 MAX98090_SHDNRUN, 0);
374
375 switch (freq) {
376 case 26000000:
377 val = 1 << 7;
378 break;
379 case 19200000:
380 val = 1 << 6;
381 break;
382 case 13000000:
383 val = 1 << 5;
384 break;
385 case 12288000:
386 val = 1 << 4;
387 break;
388 case 12000000:
389 val = 1 << 3;
390 break;
391 case 11289600:
392 val = 1 << 2;
393 break;
394 default:
395 dev_err(codec->dev, "Invalid master clock frequency\n");
396 return -EINVAL;
397 }
398 snd_soc_update_bits(codec, MAX98090_0x04_SYS_CLK, 0xFD, val);
399
400 snd_soc_update_bits(codec, MAX98090_0x45_DEV_SHUTDOWN,
401 MAX98090_SHDNRUN, MAX98090_SHDNRUN);
402
403 dev_dbg(dai->dev, "sysclk is %uHz\n", freq);
404
405 return 0;
406}
407
408static int max98090_dai_set_fmt(struct snd_soc_dai *dai,
409 unsigned int fmt)
410{
411 struct snd_soc_codec *codec = dai->codec;
412 int is_master;
413 u8 val;
414
415 /* master/slave mode */
416 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
417 case SND_SOC_DAIFMT_CBM_CFM:
418 is_master = 1;
419 break;
420 case SND_SOC_DAIFMT_CBS_CFS:
421 is_master = 0;
422 break;
423 default:
424 dev_err(codec->dev, "unsupported clock\n");
425 return -EINVAL;
426 }
427
428 /* format */
429 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
430 case SND_SOC_DAIFMT_I2S:
431 val = (is_master) ? MAX98090_I2S_M : MAX98090_I2S_S;
432 break;
433 case SND_SOC_DAIFMT_RIGHT_J:
434 val = (is_master) ? MAX98090_RJ_M : MAX98090_RJ_S;
435 break;
436 case SND_SOC_DAIFMT_LEFT_J:
437 val = (is_master) ? MAX98090_LJ_M : MAX98090_LJ_S;
438 break;
439 default:
440 dev_err(codec->dev, "unsupported format\n");
441 return -EINVAL;
442 }
443 snd_soc_update_bits(codec, MAX98090_0x06_DAI_IF,
444 MAX98090_DAI_IF_MASK, val);
445
446 return 0;
447}
448
449#define MAX98090_RATES SNDRV_PCM_RATE_8000_96000
450#define MAX98090_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
451
452static struct snd_soc_dai_ops max98090_dai_ops = {
453 .set_sysclk = max98090_dai_set_sysclk,
454 .set_fmt = max98090_dai_set_fmt,
455 .hw_params = max98090_dai_hw_params,
456};
457
458static struct snd_soc_dai_driver max98090_dai = {
459 .name = "max98090-Hifi",
460 .playback = {
461 .stream_name = "Playback",
462 .channels_min = 1,
463 .channels_max = 2,
464 .rates = MAX98090_RATES,
465 .formats = MAX98090_FORMATS,
466 },
467 .ops = &max98090_dai_ops,
468};
469
470static int max98090_probe(struct snd_soc_codec *codec)
471{
472 struct max98090_priv *priv = snd_soc_codec_get_drvdata(codec);
473 struct device *dev = codec->dev;
474 int ret;
475
476 codec->control_data = priv->regmap;
477 ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
478 if (ret < 0) {
479 dev_err(dev, "Failed to set cache I/O: %d\n", ret);
480 return ret;
481 }
482
483 /* Device active */
484 snd_soc_update_bits(codec, MAX98090_0x45_DEV_SHUTDOWN,
485 MAX98090_SHDNRUN, MAX98090_SHDNRUN);
486
487 return 0;
488}
489
490static int max98090_remove(struct snd_soc_codec *codec)
491{
492 return 0;
493}
494
495static struct snd_soc_codec_driver soc_codec_dev_max98090 = {
496 .probe = max98090_probe,
497 .remove = max98090_remove,
498 .controls = max98090_snd_controls,
499 .num_controls = ARRAY_SIZE(max98090_snd_controls),
500 .dapm_widgets = max98090_dapm_widgets,
501 .num_dapm_widgets = ARRAY_SIZE(max98090_dapm_widgets),
502 .dapm_routes = max98090_audio_map,
503 .num_dapm_routes = ARRAY_SIZE(max98090_audio_map),
504};
505
506static const struct regmap_config max98090_regmap = {
507 .reg_bits = 8,
508 .val_bits = 8,
509 .max_register = MAX98090_REG_END,
510 .volatile_reg = max98090_volatile,
511 .cache_type = REGCACHE_RBTREE,
512 .reg_defaults = max98090_reg_defaults,
513 .num_reg_defaults = ARRAY_SIZE(max98090_reg_defaults),
514};
515
516static int max98090_i2c_probe(struct i2c_client *i2c,
517 const struct i2c_device_id *id)
518{
519 struct max98090_priv *priv;
520 struct device *dev = &i2c->dev;
521 unsigned int val;
522 int ret;
523
524 priv = devm_kzalloc(dev, sizeof(struct max98090_priv),
525 GFP_KERNEL);
526 if (!priv)
527 return -ENOMEM;
528
529 priv->regmap = devm_regmap_init_i2c(i2c, &max98090_regmap);
530 if (IS_ERR(priv->regmap)) {
531 ret = PTR_ERR(priv->regmap);
532 dev_err(dev, "Failed to init regmap: %d\n", ret);
533 return ret;
534 }
535
536 i2c_set_clientdata(i2c, priv);
537
538 ret = regmap_read(priv->regmap, MAX98090_0xFF_REV_ID, &val);
539 if (ret < 0) {
540 dev_err(dev, "Failed to read device revision: %d\n", ret);
541 return ret;
542 }
543 dev_info(dev, "revision 0x%02x\n", val);
544
545 ret = snd_soc_register_codec(dev,
546 &soc_codec_dev_max98090,
547 &max98090_dai, 1);
548
549 return ret;
550}
551
552static int max98090_i2c_remove(struct i2c_client *client)
553{
554 snd_soc_unregister_codec(&client->dev);
555 return 0;
556}
557
558static const struct i2c_device_id max98090_i2c_id[] = {
559 { "max98090", 0 },
560 { }
561};
562MODULE_DEVICE_TABLE(i2c, max98090_i2c_id);
563
564static struct i2c_driver max98090_i2c_driver = {
565 .driver = {
566 .name = "max98090",
567 .owner = THIS_MODULE,
568 },
569 .probe = max98090_i2c_probe,
570 .remove = max98090_i2c_remove,
571 .id_table = max98090_i2c_id,
572};
573module_i2c_driver(max98090_i2c_driver);
574
575MODULE_DESCRIPTION("ALSA SoC MAX98090 driver");
576MODULE_AUTHOR("Peter Hsiang, Kuninori Morimoto");
577MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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