Commit | Line | Data |
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a3a83d9a KM |
1 | /* |
2 | * ak4642.c -- AK4642/AK4643 ALSA Soc Audio driver | |
3 | * | |
4 | * Copyright (C) 2009 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <morimoto.kuninori@renesas.com> | |
6 | * | |
7 | * Based on wm8731.c by Richard Purdie | |
8 | * Based on ak4535.c by Richard Purdie | |
9 | * Based on wm8753.c by Liam Girdwood | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | ||
16 | /* ** CAUTION ** | |
17 | * | |
18 | * This is very simple driver. | |
19 | * It can use headphone output / stereo input only | |
20 | * | |
21 | * AK4642 is not tested. | |
22 | * AK4643 is tested. | |
23 | */ | |
24 | ||
a3a83d9a | 25 | #include <linux/delay.h> |
a3a83d9a KM |
26 | #include <linux/i2c.h> |
27 | #include <linux/platform_device.h> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
ce6120cc | 29 | #include <sound/soc.h> |
a3a83d9a | 30 | #include <sound/initval.h> |
a300de3c | 31 | #include <sound/tlv.h> |
a3a83d9a | 32 | |
a3a83d9a KM |
33 | #define AK4642_VERSION "0.0.1" |
34 | ||
35 | #define PW_MGMT1 0x00 | |
36 | #define PW_MGMT2 0x01 | |
37 | #define SG_SL1 0x02 | |
38 | #define SG_SL2 0x03 | |
39 | #define MD_CTL1 0x04 | |
40 | #define MD_CTL2 0x05 | |
41 | #define TIMER 0x06 | |
42 | #define ALC_CTL1 0x07 | |
43 | #define ALC_CTL2 0x08 | |
44 | #define L_IVC 0x09 | |
45 | #define L_DVC 0x0a | |
46 | #define ALC_CTL3 0x0b | |
47 | #define R_IVC 0x0c | |
48 | #define R_DVC 0x0d | |
49 | #define MD_CTL3 0x0e | |
50 | #define MD_CTL4 0x0f | |
51 | #define PW_MGMT3 0x10 | |
52 | #define DF_S 0x11 | |
53 | #define FIL3_0 0x12 | |
54 | #define FIL3_1 0x13 | |
55 | #define FIL3_2 0x14 | |
56 | #define FIL3_3 0x15 | |
57 | #define EQ_0 0x16 | |
58 | #define EQ_1 0x17 | |
59 | #define EQ_2 0x18 | |
60 | #define EQ_3 0x19 | |
61 | #define EQ_4 0x1a | |
62 | #define EQ_5 0x1b | |
63 | #define FIL1_0 0x1c | |
64 | #define FIL1_1 0x1d | |
65 | #define FIL1_2 0x1e | |
66 | #define FIL1_3 0x1f | |
67 | #define PW_MGMT4 0x20 | |
68 | #define MD_CTL5 0x21 | |
69 | #define LO_MS 0x22 | |
70 | #define HP_MS 0x23 | |
71 | #define SPK_MS 0x24 | |
72 | ||
73 | #define AK4642_CACHEREGNUM 0x25 | |
74 | ||
a3471239 KM |
75 | /* PW_MGMT1*/ |
76 | #define PMVCM (1 << 6) /* VCOM Power Management */ | |
77 | #define PMMIN (1 << 5) /* MIN Input Power Management */ | |
78 | #define PMDAC (1 << 2) /* DAC Power Management */ | |
79 | #define PMADL (1 << 0) /* MIC Amp Lch and ADC Lch Power Management */ | |
80 | ||
0643ce8f KM |
81 | /* PW_MGMT2 */ |
82 | #define HPMTN (1 << 6) | |
83 | #define PMHPL (1 << 5) | |
84 | #define PMHPR (1 << 4) | |
85 | #define MS (1 << 3) /* master/slave select */ | |
86 | #define MCKO (1 << 1) | |
87 | #define PMPLL (1 << 0) | |
88 | ||
89 | #define PMHP_MASK (PMHPL | PMHPR) | |
90 | #define PMHP PMHP_MASK | |
91 | ||
a3471239 KM |
92 | /* PW_MGMT3 */ |
93 | #define PMADR (1 << 0) /* MIC L / ADC R Power Management */ | |
94 | ||
95 | /* SG_SL1 */ | |
96 | #define MINS (1 << 6) /* Switch from MIN to Speaker */ | |
97 | #define DACL (1 << 4) /* Switch from DAC to Stereo or Receiver */ | |
98 | #define PMMP (1 << 2) /* MPWR pin Power Management */ | |
99 | #define MGAIN0 (1 << 0) /* MIC amp gain*/ | |
100 | ||
101 | /* TIMER */ | |
102 | #define ZTM(param) ((param & 0x3) << 4) /* ALC Zoro Crossing TimeOut */ | |
103 | #define WTM(param) (((param & 0x4) << 4) | ((param & 0x3) << 2)) | |
104 | ||
105 | /* ALC_CTL1 */ | |
106 | #define ALC (1 << 5) /* ALC Enable */ | |
107 | #define LMTH0 (1 << 0) /* ALC Limiter / Recovery Level */ | |
108 | ||
4b6316b4 KM |
109 | /* MD_CTL1 */ |
110 | #define PLL3 (1 << 7) | |
111 | #define PLL2 (1 << 6) | |
112 | #define PLL1 (1 << 5) | |
113 | #define PLL0 (1 << 4) | |
114 | #define PLL_MASK (PLL3 | PLL2 | PLL1 | PLL0) | |
115 | ||
0643ce8f KM |
116 | #define BCKO_MASK (1 << 3) |
117 | #define BCKO_64 BCKO_MASK | |
118 | ||
1ad747ca KM |
119 | /* MD_CTL2 */ |
120 | #define FS0 (1 << 0) | |
121 | #define FS1 (1 << 1) | |
122 | #define FS2 (1 << 2) | |
123 | #define FS3 (1 << 5) | |
124 | #define FS_MASK (FS0 | FS1 | FS2 | FS3) | |
125 | ||
a3471239 KM |
126 | /* MD_CTL3 */ |
127 | #define BST1 (1 << 3) | |
128 | ||
129 | /* MD_CTL4 */ | |
130 | #define DACH (1 << 0) | |
a3a83d9a | 131 | |
a300de3c KM |
132 | /* |
133 | * Playback Volume (table 39) | |
134 | * | |
135 | * max : 0x00 : +12.0 dB | |
136 | * ( 0.5 dB step ) | |
137 | * min : 0xFE : -115.0 dB | |
138 | * mute: 0xFF | |
139 | */ | |
140 | static const DECLARE_TLV_DB_SCALE(out_tlv, -11500, 50, 1); | |
141 | ||
142 | static const struct snd_kcontrol_new ak4642_snd_controls[] = { | |
143 | ||
144 | SOC_DOUBLE_R_TLV("Digital Playback Volume", L_DVC, R_DVC, | |
145 | 0, 0xFF, 1, out_tlv), | |
146 | }; | |
147 | ||
148 | ||
a3a83d9a KM |
149 | /* codec private data */ |
150 | struct ak4642_priv { | |
f0fba2ad LG |
151 | unsigned int sysclk; |
152 | enum snd_soc_control_type control_type; | |
153 | void *control_data; | |
a3a83d9a KM |
154 | }; |
155 | ||
a3a83d9a KM |
156 | /* |
157 | * ak4642 register cache | |
158 | */ | |
159 | static const u16 ak4642_reg[AK4642_CACHEREGNUM] = { | |
160 | 0x0000, 0x0000, 0x0001, 0x0000, | |
161 | 0x0002, 0x0000, 0x0000, 0x0000, | |
162 | 0x00e1, 0x00e1, 0x0018, 0x0000, | |
163 | 0x00e1, 0x0018, 0x0011, 0x0008, | |
164 | 0x0000, 0x0000, 0x0000, 0x0000, | |
165 | 0x0000, 0x0000, 0x0000, 0x0000, | |
166 | 0x0000, 0x0000, 0x0000, 0x0000, | |
167 | 0x0000, 0x0000, 0x0000, 0x0000, | |
168 | 0x0000, 0x0000, 0x0000, 0x0000, | |
169 | 0x0000, | |
170 | }; | |
171 | ||
172 | /* | |
173 | * read ak4642 register cache | |
174 | */ | |
175 | static inline unsigned int ak4642_read_reg_cache(struct snd_soc_codec *codec, | |
176 | unsigned int reg) | |
177 | { | |
178 | u16 *cache = codec->reg_cache; | |
179 | if (reg >= AK4642_CACHEREGNUM) | |
180 | return -1; | |
181 | return cache[reg]; | |
182 | } | |
183 | ||
184 | /* | |
185 | * write ak4642 register cache | |
186 | */ | |
187 | static inline void ak4642_write_reg_cache(struct snd_soc_codec *codec, | |
188 | u16 reg, unsigned int value) | |
189 | { | |
190 | u16 *cache = codec->reg_cache; | |
191 | if (reg >= AK4642_CACHEREGNUM) | |
192 | return; | |
193 | ||
194 | cache[reg] = value; | |
195 | } | |
196 | ||
197 | /* | |
198 | * write to the AK4642 register space | |
199 | */ | |
200 | static int ak4642_write(struct snd_soc_codec *codec, unsigned int reg, | |
201 | unsigned int value) | |
202 | { | |
203 | u8 data[2]; | |
204 | ||
205 | /* data is | |
206 | * D15..D8 AK4642 register offset | |
207 | * D7...D0 register data | |
208 | */ | |
209 | data[0] = reg & 0xff; | |
210 | data[1] = value & 0xff; | |
211 | ||
212 | if (codec->hw_write(codec->control_data, data, 2) == 2) { | |
213 | ak4642_write_reg_cache(codec, reg, value); | |
214 | return 0; | |
215 | } else | |
216 | return -EIO; | |
217 | } | |
218 | ||
219 | static int ak4642_sync(struct snd_soc_codec *codec) | |
220 | { | |
221 | u16 *cache = codec->reg_cache; | |
222 | int i, r = 0; | |
223 | ||
224 | for (i = 0; i < AK4642_CACHEREGNUM; i++) | |
225 | r |= ak4642_write(codec, i, cache[i]); | |
226 | ||
227 | return r; | |
228 | }; | |
229 | ||
230 | static int ak4642_dai_startup(struct snd_pcm_substream *substream, | |
231 | struct snd_soc_dai *dai) | |
232 | { | |
233 | int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; | |
234 | struct snd_soc_codec *codec = dai->codec; | |
235 | ||
236 | if (is_play) { | |
237 | /* | |
238 | * start headphone output | |
239 | * | |
240 | * PLL, Master Mode | |
241 | * Audio I/F Format :MSB justified (ADC & DAC) | |
a3a83d9a KM |
242 | * Bass Boost Level : Middle |
243 | * | |
244 | * This operation came from example code of | |
245 | * "ASAHI KASEI AK4642" (japanese) manual p97. | |
a3a83d9a | 246 | */ |
a3471239 KM |
247 | snd_soc_update_bits(codec, MD_CTL4, DACH, DACH); |
248 | snd_soc_update_bits(codec, MD_CTL3, BST1, BST1); | |
249 | ak4642_write(codec, L_IVC, 0x91); /* volume */ | |
250 | ak4642_write(codec, R_IVC, 0x91); /* volume */ | |
251 | snd_soc_update_bits(codec, PW_MGMT1, PMVCM | PMMIN | PMDAC, | |
252 | PMVCM | PMMIN | PMDAC); | |
0643ce8f KM |
253 | snd_soc_update_bits(codec, PW_MGMT2, PMHP_MASK, PMHP); |
254 | snd_soc_update_bits(codec, PW_MGMT2, HPMTN, HPMTN); | |
a3a83d9a KM |
255 | } else { |
256 | /* | |
257 | * start stereo input | |
258 | * | |
259 | * PLL Master Mode | |
260 | * Audio I/F Format:MSB justified (ADC & DAC) | |
a3a83d9a KM |
261 | * Pre MIC AMP:+20dB |
262 | * MIC Power On | |
263 | * ALC setting:Refer to Table 35 | |
264 | * ALC bit=“1” | |
265 | * | |
266 | * This operation came from example code of | |
267 | * "ASAHI KASEI AK4642" (japanese) manual p94. | |
268 | */ | |
a3471239 KM |
269 | ak4642_write(codec, SG_SL1, PMMP | MGAIN0); |
270 | ak4642_write(codec, TIMER, ZTM(0x3) | WTM(0x3)); | |
271 | ak4642_write(codec, ALC_CTL1, ALC | LMTH0); | |
272 | snd_soc_update_bits(codec, PW_MGMT1, PMVCM | PMADL, | |
273 | PMVCM | PMADL); | |
274 | snd_soc_update_bits(codec, PW_MGMT3, PMADR, PMADR); | |
a3a83d9a KM |
275 | } |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
280 | static void ak4642_dai_shutdown(struct snd_pcm_substream *substream, | |
281 | struct snd_soc_dai *dai) | |
282 | { | |
283 | int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; | |
284 | struct snd_soc_codec *codec = dai->codec; | |
285 | ||
286 | if (is_play) { | |
287 | /* stop headphone output */ | |
0643ce8f KM |
288 | snd_soc_update_bits(codec, PW_MGMT2, HPMTN, 0); |
289 | snd_soc_update_bits(codec, PW_MGMT2, PMHP_MASK, 0); | |
a3471239 KM |
290 | snd_soc_update_bits(codec, PW_MGMT1, PMMIN | PMDAC, 0); |
291 | snd_soc_update_bits(codec, MD_CTL3, BST1, 0); | |
292 | snd_soc_update_bits(codec, MD_CTL4, DACH, 0); | |
a3a83d9a KM |
293 | } else { |
294 | /* stop stereo input */ | |
a3471239 KM |
295 | snd_soc_update_bits(codec, PW_MGMT1, PMADL, 0); |
296 | snd_soc_update_bits(codec, PW_MGMT3, PMADR, 0); | |
297 | snd_soc_update_bits(codec, ALC_CTL1, ALC, 0); | |
a3a83d9a KM |
298 | } |
299 | } | |
300 | ||
301 | static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai, | |
302 | int clk_id, unsigned int freq, int dir) | |
303 | { | |
304 | struct snd_soc_codec *codec = codec_dai->codec; | |
4b6316b4 KM |
305 | u8 pll; |
306 | ||
307 | switch (freq) { | |
308 | case 11289600: | |
309 | pll = PLL2; | |
310 | break; | |
311 | case 12288000: | |
312 | pll = PLL2 | PLL0; | |
313 | break; | |
314 | case 12000000: | |
315 | pll = PLL2 | PLL1; | |
316 | break; | |
317 | case 24000000: | |
318 | pll = PLL2 | PLL1 | PLL0; | |
319 | break; | |
320 | case 13500000: | |
321 | pll = PLL3 | PLL2; | |
322 | break; | |
323 | case 27000000: | |
324 | pll = PLL3 | PLL2 | PLL0; | |
325 | break; | |
326 | default: | |
327 | return -EINVAL; | |
328 | } | |
329 | snd_soc_update_bits(codec, MD_CTL1, PLL_MASK, pll); | |
a3a83d9a | 330 | |
a3a83d9a KM |
331 | return 0; |
332 | } | |
333 | ||
0643ce8f KM |
334 | static int ak4642_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
335 | { | |
336 | struct snd_soc_codec *codec = dai->codec; | |
337 | u8 data; | |
338 | u8 bcko; | |
339 | ||
340 | data = MCKO | PMPLL; /* use MCKO */ | |
341 | bcko = 0; | |
342 | ||
343 | /* set master/slave audio interface */ | |
344 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
345 | case SND_SOC_DAIFMT_CBM_CFM: | |
346 | data |= MS; | |
347 | bcko = BCKO_64; | |
348 | break; | |
349 | case SND_SOC_DAIFMT_CBS_CFS: | |
350 | break; | |
351 | default: | |
352 | return -EINVAL; | |
353 | } | |
354 | snd_soc_update_bits(codec, PW_MGMT2, MS, data); | |
355 | snd_soc_update_bits(codec, MD_CTL1, BCKO_MASK, bcko); | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
1ad747ca KM |
360 | static int ak4642_dai_hw_params(struct snd_pcm_substream *substream, |
361 | struct snd_pcm_hw_params *params, | |
362 | struct snd_soc_dai *dai) | |
363 | { | |
364 | struct snd_soc_codec *codec = dai->codec; | |
365 | u8 rate; | |
366 | ||
367 | switch (params_rate(params)) { | |
368 | case 7350: | |
369 | rate = FS2; | |
370 | break; | |
371 | case 8000: | |
372 | rate = 0; | |
373 | break; | |
374 | case 11025: | |
375 | rate = FS2 | FS0; | |
376 | break; | |
377 | case 12000: | |
378 | rate = FS0; | |
379 | break; | |
380 | case 14700: | |
381 | rate = FS2 | FS1; | |
382 | break; | |
383 | case 16000: | |
384 | rate = FS1; | |
385 | break; | |
386 | case 22050: | |
387 | rate = FS2 | FS1 | FS0; | |
388 | break; | |
389 | case 24000: | |
390 | rate = FS1 | FS0; | |
391 | break; | |
392 | case 29400: | |
393 | rate = FS3 | FS2 | FS1; | |
394 | break; | |
395 | case 32000: | |
396 | rate = FS3 | FS1; | |
397 | break; | |
398 | case 44100: | |
399 | rate = FS3 | FS2 | FS1 | FS0; | |
400 | break; | |
401 | case 48000: | |
402 | rate = FS3 | FS1 | FS0; | |
403 | break; | |
404 | default: | |
405 | return -EINVAL; | |
406 | break; | |
407 | } | |
408 | snd_soc_update_bits(codec, MD_CTL2, FS_MASK, rate); | |
a3a83d9a | 409 | |
a3a83d9a KM |
410 | return 0; |
411 | } | |
412 | ||
413 | static struct snd_soc_dai_ops ak4642_dai_ops = { | |
414 | .startup = ak4642_dai_startup, | |
415 | .shutdown = ak4642_dai_shutdown, | |
416 | .set_sysclk = ak4642_dai_set_sysclk, | |
0643ce8f | 417 | .set_fmt = ak4642_dai_set_fmt, |
1ad747ca | 418 | .hw_params = ak4642_dai_hw_params, |
a3a83d9a KM |
419 | }; |
420 | ||
f0fba2ad LG |
421 | static struct snd_soc_dai_driver ak4642_dai = { |
422 | .name = "ak4642-hifi", | |
a3a83d9a KM |
423 | .playback = { |
424 | .stream_name = "Playback", | |
425 | .channels_min = 1, | |
426 | .channels_max = 2, | |
427 | .rates = SNDRV_PCM_RATE_8000_48000, | |
428 | .formats = SNDRV_PCM_FMTBIT_S16_LE }, | |
429 | .capture = { | |
430 | .stream_name = "Capture", | |
431 | .channels_min = 1, | |
432 | .channels_max = 2, | |
433 | .rates = SNDRV_PCM_RATE_8000_48000, | |
434 | .formats = SNDRV_PCM_FMTBIT_S16_LE }, | |
435 | .ops = &ak4642_dai_ops, | |
1ad747ca | 436 | .symmetric_rates = 1, |
a3a83d9a | 437 | }; |
a3a83d9a | 438 | |
f0fba2ad | 439 | static int ak4642_resume(struct snd_soc_codec *codec) |
a3a83d9a | 440 | { |
a3a83d9a KM |
441 | ak4642_sync(codec); |
442 | return 0; | |
443 | } | |
444 | ||
f0fba2ad LG |
445 | |
446 | static int ak4642_probe(struct snd_soc_codec *codec) | |
a3a83d9a | 447 | { |
f0fba2ad | 448 | struct ak4642_priv *ak4642 = snd_soc_codec_get_drvdata(codec); |
a3a83d9a | 449 | |
f0fba2ad | 450 | dev_info(codec->dev, "AK4642 Audio Codec %s", AK4642_VERSION); |
a3a83d9a | 451 | |
a3a83d9a | 452 | codec->hw_write = (hw_write_t)i2c_master_send; |
0ce75aa4 | 453 | codec->control_data = ak4642->control_data; |
a3a83d9a | 454 | |
73bb379f KM |
455 | snd_soc_add_controls(codec, ak4642_snd_controls, |
456 | ARRAY_SIZE(ak4642_snd_controls)); | |
a3a83d9a | 457 | |
f0fba2ad | 458 | return 0; |
a3a83d9a KM |
459 | } |
460 | ||
f0fba2ad | 461 | static struct snd_soc_codec_driver soc_codec_dev_ak4642 = { |
0ce75aa4 KM |
462 | .probe = ak4642_probe, |
463 | .resume = ak4642_resume, | |
464 | .read = ak4642_read_reg_cache, | |
465 | .write = ak4642_write, | |
466 | .reg_cache_size = ARRAY_SIZE(ak4642_reg), | |
467 | .reg_word_size = sizeof(u8), | |
f0fba2ad LG |
468 | .reg_cache_default = ak4642_reg, |
469 | }; | |
470 | ||
a3a83d9a | 471 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
f0fba2ad LG |
472 | static __devinit int ak4642_i2c_probe(struct i2c_client *i2c, |
473 | const struct i2c_device_id *id) | |
a3a83d9a KM |
474 | { |
475 | struct ak4642_priv *ak4642; | |
a3a83d9a KM |
476 | int ret; |
477 | ||
478 | ak4642 = kzalloc(sizeof(struct ak4642_priv), GFP_KERNEL); | |
0ce75aa4 | 479 | if (!ak4642) |
a3a83d9a KM |
480 | return -ENOMEM; |
481 | ||
a3a83d9a | 482 | i2c_set_clientdata(i2c, ak4642); |
f0fba2ad LG |
483 | ak4642->control_data = i2c; |
484 | ak4642->control_type = SND_SOC_I2C; | |
a3a83d9a | 485 | |
f0fba2ad LG |
486 | ret = snd_soc_register_codec(&i2c->dev, |
487 | &soc_codec_dev_ak4642, &ak4642_dai, 1); | |
488 | if (ret < 0) | |
7bcaad91 | 489 | kfree(ak4642); |
a3a83d9a KM |
490 | return ret; |
491 | } | |
492 | ||
f0fba2ad | 493 | static __devexit int ak4642_i2c_remove(struct i2c_client *client) |
a3a83d9a | 494 | { |
f0fba2ad LG |
495 | snd_soc_unregister_codec(&client->dev); |
496 | kfree(i2c_get_clientdata(client)); | |
a3a83d9a KM |
497 | return 0; |
498 | } | |
499 | ||
500 | static const struct i2c_device_id ak4642_i2c_id[] = { | |
501 | { "ak4642", 0 }, | |
502 | { "ak4643", 0 }, | |
503 | { } | |
504 | }; | |
505 | MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id); | |
506 | ||
507 | static struct i2c_driver ak4642_i2c_driver = { | |
508 | .driver = { | |
f0fba2ad | 509 | .name = "ak4642-codec", |
a3a83d9a KM |
510 | .owner = THIS_MODULE, |
511 | }, | |
0ce75aa4 KM |
512 | .probe = ak4642_i2c_probe, |
513 | .remove = __devexit_p(ak4642_i2c_remove), | |
514 | .id_table = ak4642_i2c_id, | |
a3a83d9a | 515 | }; |
a3a83d9a KM |
516 | #endif |
517 | ||
a3a83d9a KM |
518 | static int __init ak4642_modinit(void) |
519 | { | |
1cf86f6f | 520 | int ret = 0; |
a3a83d9a KM |
521 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
522 | ret = i2c_add_driver(&ak4642_i2c_driver); | |
523 | #endif | |
524 | return ret; | |
525 | ||
526 | } | |
527 | module_init(ak4642_modinit); | |
528 | ||
529 | static void __exit ak4642_exit(void) | |
530 | { | |
531 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
532 | i2c_del_driver(&ak4642_i2c_driver); | |
533 | #endif | |
534 | ||
535 | } | |
536 | module_exit(ak4642_exit); | |
537 | ||
538 | MODULE_DESCRIPTION("Soc AK4642 driver"); | |
539 | MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@renesas.com>"); | |
540 | MODULE_LICENSE("GPL"); |