2 * wm8750.c -- WM8750 ALSA SoC audio driver
4 * Copyright 2005 Openedhand Ltd.
6 * Author: Richard Purdie <richard@openedhand.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
20 #include <linux/i2c.h>
21 #include <linux/platform_device.h>
22 #include <sound/driver.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/initval.h>
32 #define AUDIO_NAME "WM8750"
33 #define WM8750_VERSION "0.11"
39 #define WM8750_DEBUG 0
42 #define dbg(format, arg...) \
43 printk(KERN_DEBUG AUDIO_NAME ": " format "\n" , ## arg)
45 #define dbg(format, arg...) do {} while (0)
47 #define err(format, arg...) \
48 printk(KERN_ERR AUDIO_NAME ": " format "\n" , ## arg)
49 #define info(format, arg...) \
50 printk(KERN_INFO AUDIO_NAME ": " format "\n" , ## arg)
51 #define warn(format, arg...) \
52 printk(KERN_WARNING AUDIO_NAME ": " format "\n" , ## arg)
55 * wm8750 register cache
56 * We can't read the WM8750 register space when we
57 * are using 2 wire for device control, so we cache them instead.
59 static const u16 wm8750_reg[] = {
60 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
61 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
62 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
63 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
64 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
65 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
66 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
67 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
68 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
69 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
70 0x0079, 0x0079, 0x0079, /* 40 */
73 #define WM8750_HIFI_DAIFMT \
74 (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_RIGHT_J | \
75 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_IB_NF | \
79 (SND_SOC_DAIDIR_PLAYBACK | SND_SOC_DAIDIR_CAPTURE)
81 #define WM8750_HIFI_FSB \
82 (SND_SOC_FSBD(1) | SND_SOC_FSBD(2) | SND_SOC_FSBD(4) | \
83 SND_SOC_FSBD(8) | SND_SOC_FSBD(16))
85 #define WM8750_HIFI_RATES \
86 (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
87 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
88 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
90 #define WM8750_HIFI_BITS \
91 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
92 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
94 static struct snd_soc_dai_mode wm8750_modes[] = {
95 /* common codec frame and clock master modes */
98 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
99 .pcmfmt = WM8750_HIFI_BITS,
100 .pcmrate = SNDRV_PCM_RATE_8000,
101 .pcmdir = WM8750_DIR,
102 .flags = SND_SOC_DAI_BFS_DIV,
104 .bfs = WM8750_HIFI_FSB,
107 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
108 .pcmfmt = WM8750_HIFI_BITS,
109 .pcmrate = SNDRV_PCM_RATE_8000,
110 .pcmdir = WM8750_DIR,
111 .flags = SND_SOC_DAI_BFS_DIV,
113 .bfs = WM8750_HIFI_FSB,
116 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
117 .pcmfmt = WM8750_HIFI_BITS,
118 .pcmrate = SNDRV_PCM_RATE_8000,
119 .pcmdir = WM8750_DIR,
120 .flags = SND_SOC_DAI_BFS_DIV,
122 .bfs = WM8750_HIFI_FSB,
125 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
126 .pcmfmt = WM8750_HIFI_BITS,
127 .pcmrate = SNDRV_PCM_RATE_8000,
128 .pcmdir = WM8750_DIR,
129 .flags = SND_SOC_DAI_BFS_DIV,
131 .bfs = WM8750_HIFI_FSB,
134 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
135 .pcmfmt = WM8750_HIFI_BITS,
136 .pcmrate = SNDRV_PCM_RATE_8000,
137 .pcmdir = WM8750_DIR,
138 .flags = SND_SOC_DAI_BFS_DIV,
140 .bfs = WM8750_HIFI_FSB,
145 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
146 .pcmfmt = WM8750_HIFI_BITS,
147 .pcmrate = SNDRV_PCM_RATE_11025,
148 .pcmdir = WM8750_DIR,
149 .flags = SND_SOC_DAI_BFS_DIV,
151 .bfs = WM8750_HIFI_FSB,
154 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
155 .pcmfmt = WM8750_HIFI_BITS,
156 .pcmrate = SNDRV_PCM_RATE_11025,
157 .pcmdir = WM8750_DIR,
158 .flags = SND_SOC_DAI_BFS_DIV,
160 .bfs = WM8750_HIFI_FSB,
163 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
164 .pcmfmt = WM8750_HIFI_BITS,
165 .pcmrate = SNDRV_PCM_RATE_11025,
166 .pcmdir = WM8750_DIR,
167 .flags = SND_SOC_DAI_BFS_DIV,
169 .bfs = WM8750_HIFI_FSB,
174 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
175 .pcmfmt = WM8750_HIFI_BITS,
176 .pcmrate = SNDRV_PCM_RATE_16000,
177 .pcmdir = WM8750_DIR,
178 .flags = SND_SOC_DAI_BFS_DIV,
180 .bfs = WM8750_HIFI_FSB,
183 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
184 .pcmfmt = WM8750_HIFI_BITS,
185 .pcmrate = SNDRV_PCM_RATE_16000,
186 .pcmdir = WM8750_DIR,
187 .flags = SND_SOC_DAI_BFS_DIV,
189 .bfs = WM8750_HIFI_FSB
192 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
193 .pcmfmt = WM8750_HIFI_BITS,
194 .pcmrate = SNDRV_PCM_RATE_16000,
195 .pcmdir = WM8750_DIR,
196 .flags = SND_SOC_DAI_BFS_DIV,
198 .bfs = WM8750_HIFI_FSB,
203 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
204 .pcmfmt = WM8750_HIFI_BITS,
205 .pcmrate = SNDRV_PCM_RATE_22050,
206 .pcmdir = WM8750_DIR,
207 .flags = SND_SOC_DAI_BFS_DIV,
209 .bfs = WM8750_HIFI_FSB,
212 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
213 .pcmfmt = WM8750_HIFI_BITS,
214 .pcmrate = SNDRV_PCM_RATE_22050,
215 .pcmdir = WM8750_DIR,
216 .flags = SND_SOC_DAI_BFS_DIV,
218 .bfs = WM8750_HIFI_FSB,
221 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
222 .pcmfmt = WM8750_HIFI_BITS,
223 .pcmrate = SNDRV_PCM_RATE_22050,
224 .pcmdir = WM8750_DIR,
225 .flags = SND_SOC_DAI_BFS_DIV,
227 .bfs = WM8750_HIFI_FSB,
232 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
233 .pcmfmt = WM8750_HIFI_BITS,
234 .pcmrate = SNDRV_PCM_RATE_32000,
235 .pcmdir = WM8750_DIR,
236 .flags = SND_SOC_DAI_BFS_DIV,
238 .bfs = WM8750_HIFI_FSB,
241 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
242 .pcmfmt = WM8750_HIFI_BITS,
243 .pcmrate = SNDRV_PCM_RATE_32000,
244 .pcmdir = WM8750_DIR,
245 .flags = SND_SOC_DAI_BFS_DIV,
247 .bfs = WM8750_HIFI_FSB,
250 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
251 .pcmfmt = WM8750_HIFI_BITS,
252 .pcmrate = SNDRV_PCM_RATE_32000,
253 .pcmdir = WM8750_DIR,
254 .flags = SND_SOC_DAI_BFS_DIV,
256 .bfs = WM8750_HIFI_FSB,
261 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
262 .pcmfmt = WM8750_HIFI_BITS,
263 .pcmrate = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
264 .pcmdir = WM8750_DIR,
265 .flags = SND_SOC_DAI_BFS_DIV,
267 .bfs = WM8750_HIFI_FSB,
270 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
271 .pcmfmt = WM8750_HIFI_BITS,
272 .pcmrate = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
273 .pcmdir = WM8750_DIR,
274 .flags = SND_SOC_DAI_BFS_DIV,
276 .bfs = WM8750_HIFI_FSB,
279 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
280 .pcmfmt = WM8750_HIFI_BITS,
281 .pcmrate = SNDRV_PCM_RATE_44100,
282 .pcmdir = WM8750_DIR,
283 .flags = SND_SOC_DAI_BFS_DIV,
285 .bfs = WM8750_HIFI_FSB,
288 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
289 .pcmfmt = WM8750_HIFI_BITS,
290 .pcmrate = SNDRV_PCM_RATE_48000,
291 .pcmdir = WM8750_DIR,
292 .flags = SND_SOC_DAI_BFS_DIV,
294 .bfs = WM8750_HIFI_FSB,
299 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
300 .pcmfmt = WM8750_HIFI_BITS,
301 .pcmrate = SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000,
302 .pcmdir = WM8750_DIR,
303 .flags = SND_SOC_DAI_BFS_DIV,
305 .bfs = WM8750_HIFI_FSB,
308 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
309 .pcmfmt = WM8750_HIFI_BITS,
310 .pcmrate = SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000,
311 .pcmdir = WM8750_DIR,
312 .flags = SND_SOC_DAI_BFS_DIV,
314 .bfs = WM8750_HIFI_FSB,
317 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
318 .pcmfmt = WM8750_HIFI_BITS,
319 .pcmrate = SNDRV_PCM_RATE_88200,
320 .pcmdir = WM8750_DIR,
321 .flags = SND_SOC_DAI_BFS_DIV,
323 .bfs = WM8750_HIFI_FSB,
326 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
327 .pcmfmt = WM8750_HIFI_BITS,
328 .pcmrate = SNDRV_PCM_RATE_96000,
329 .pcmdir = WM8750_DIR,
330 .flags = SND_SOC_DAI_BFS_DIV,
332 .bfs = WM8750_HIFI_FSB,
335 /* codec frame and clock slave modes */
337 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
338 .pcmfmt = WM8750_HIFI_BITS,
339 .pcmrate = WM8750_HIFI_RATES,
340 .pcmdir = WM8750_DIR,
341 .flags = SND_SOC_DAI_BFS_DIV,
342 .fs = SND_SOC_FS_ALL,
343 .bfs = SND_SOC_FSB_ALL,
348 * read wm8750 register cache
350 static inline unsigned int wm8750_read_reg_cache(struct snd_soc_codec *codec,
353 u16 *cache = codec->reg_cache;
354 if (reg > WM8750_CACHE_REGNUM)
360 * write wm8750 register cache
362 static inline void wm8750_write_reg_cache(struct snd_soc_codec *codec,
363 unsigned int reg, unsigned int value)
365 u16 *cache = codec->reg_cache;
366 if (reg > WM8750_CACHE_REGNUM)
371 static int wm8750_write(struct snd_soc_codec *codec, unsigned int reg,
377 * D15..D9 WM8753 register offset
378 * D8...D0 register data
380 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
381 data[1] = value & 0x00ff;
383 wm8750_write_reg_cache (codec, reg, value);
384 if (codec->hw_write(codec->control_data, data, 2) == 2)
390 #define wm8750_reset(c) wm8750_write(c, WM8750_RESET, 0)
395 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
396 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
397 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
398 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
399 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
400 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
401 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
402 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
404 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
406 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
408 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
410 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
411 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
413 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
414 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
415 "Mono (Right)", "Digital Mono"};
417 static const struct soc_enum wm8750_enum[] = {
418 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
419 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
420 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
421 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
422 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
423 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
424 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
425 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
426 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
427 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
428 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
429 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
430 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
431 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
432 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
433 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
434 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
438 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
440 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
441 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
442 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
444 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
445 WM8750_ROUT1V, 7, 1, 0),
446 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
447 WM8750_ROUT2V, 7, 1, 0),
449 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
451 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
452 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
453 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
455 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
457 SOC_ENUM("Bass Boost", wm8750_enum[0]),
458 SOC_ENUM("Bass Filter", wm8750_enum[1]),
459 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
461 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 0),
462 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
464 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
465 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
466 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
467 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
468 SOC_ENUM("3D Mode", wm8750_enum[5]),
470 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
471 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
472 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
473 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
474 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
475 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
476 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
477 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
478 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
479 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
481 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
482 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
484 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
485 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
487 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
490 /* ADCDAC Bit 0 - ADCHPD */
491 /* ADCDAC Bit 4 - HPOR */
492 /* ADCTL1 Bit 2,3 - DATSEL */
493 /* ADCTL1 Bit 4,5 - DMONOMIX */
494 /* ADCTL1 Bit 6,7 - VSEL */
495 /* ADCTL2 Bit 2 - LRCM */
496 /* ADCTL2 Bit 3 - TRI */
497 /* ADCTL3 Bit 5 - HPFLREN */
498 /* ADCTL3 Bit 6 - VROI */
499 /* ADCTL3 Bit 7,8 - ADCLRM */
500 /* ADCIN Bit 4 - LDCM */
501 /* ADCIN Bit 5 - RDCM */
503 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
505 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
506 WM8750_LOUTM2, 4, 7, 1),
507 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
508 WM8750_ROUTM2, 4, 7, 1),
509 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
510 WM8750_MOUTM2, 4, 7, 1),
512 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
514 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
516 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
519 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
523 /* add non dapm controls */
524 static int wm8750_add_controls(struct snd_soc_codec *codec)
528 for (i = 0; i < ARRAY_SIZE(wm8750_snd_controls); i++) {
529 err = snd_ctl_add(codec->card,
530 snd_soc_cnew(&wm8750_snd_controls[i],codec, NULL));
542 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
543 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
544 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
545 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
546 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
550 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
551 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
552 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
553 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
554 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
558 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
559 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
560 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
561 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
562 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
566 static const struct snd_kcontrol_new wm8750_left_line_controls =
567 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
570 static const struct snd_kcontrol_new wm8750_right_line_controls =
571 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
574 static const struct snd_kcontrol_new wm8750_left_pga_controls =
575 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
578 static const struct snd_kcontrol_new wm8750_right_pga_controls =
579 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
582 static const struct snd_kcontrol_new wm8750_out3_controls =
583 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
585 /* Differential Mux */
586 static const struct snd_kcontrol_new wm8750_diffmux_controls =
587 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
590 static const struct snd_kcontrol_new wm8750_monomux_controls =
591 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
593 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
594 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
595 &wm8750_left_mixer_controls[0],
596 ARRAY_SIZE(wm8750_left_mixer_controls)),
597 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
598 &wm8750_right_mixer_controls[0],
599 ARRAY_SIZE(wm8750_right_mixer_controls)),
600 SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
601 &wm8750_mono_mixer_controls[0],
602 ARRAY_SIZE(wm8750_mono_mixer_controls)),
604 SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
605 SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
606 SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
607 SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
608 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
609 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
611 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
612 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
613 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
615 SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
616 &wm8750_left_pga_controls),
617 SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
618 &wm8750_right_pga_controls),
619 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
620 &wm8750_left_line_controls),
621 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
622 &wm8750_right_line_controls),
624 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
625 SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
626 SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
628 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
629 &wm8750_diffmux_controls),
630 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
631 &wm8750_monomux_controls),
632 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
633 &wm8750_monomux_controls),
635 SND_SOC_DAPM_OUTPUT("LOUT1"),
636 SND_SOC_DAPM_OUTPUT("ROUT1"),
637 SND_SOC_DAPM_OUTPUT("LOUT2"),
638 SND_SOC_DAPM_OUTPUT("ROUT2"),
639 SND_SOC_DAPM_OUTPUT("MONO"),
640 SND_SOC_DAPM_OUTPUT("OUT3"),
642 SND_SOC_DAPM_INPUT("LINPUT1"),
643 SND_SOC_DAPM_INPUT("LINPUT2"),
644 SND_SOC_DAPM_INPUT("LINPUT3"),
645 SND_SOC_DAPM_INPUT("RINPUT1"),
646 SND_SOC_DAPM_INPUT("RINPUT2"),
647 SND_SOC_DAPM_INPUT("RINPUT3"),
650 static const char *audio_map[][3] = {
652 {"Left Mixer", "Playback Switch", "Left DAC"},
653 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
654 {"Left Mixer", "Right Playback Switch", "Right DAC"},
655 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
658 {"Right Mixer", "Left Playback Switch", "Left DAC"},
659 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
660 {"Right Mixer", "Playback Switch", "Right DAC"},
661 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
664 {"Left Out 1", NULL, "Left Mixer"},
665 {"LOUT1", NULL, "Left Out 1"},
668 {"Left Out 2", NULL, "Left Mixer"},
669 {"LOUT2", NULL, "Left Out 2"},
672 {"Right Out 1", NULL, "Right Mixer"},
673 {"ROUT1", NULL, "Right Out 1"},
676 {"Right Out 2", NULL, "Right Mixer"},
677 {"ROUT2", NULL, "Right Out 2"},
680 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
681 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
682 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
683 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
686 {"Mono Out 1", NULL, "Mono Mixer"},
687 {"MONO1", NULL, "Mono Out 1"},
690 {"Out3 Mux", "VREF", "VREF"},
691 {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
692 {"Out3 Mux", "ROUT1", "Right Mixer"},
693 {"Out3 Mux", "MonoOut", "MONO1"},
694 {"Out 3", NULL, "Out3 Mux"},
695 {"OUT3", NULL, "Out 3"},
698 {"Left Line Mux", "Line 1", "LINPUT1"},
699 {"Left Line Mux", "Line 2", "LINPUT2"},
700 {"Left Line Mux", "Line 3", "LINPUT3"},
701 {"Left Line Mux", "PGA", "Left PGA Mux"},
702 {"Left Line Mux", "Differential", "Differential Mux"},
705 {"Right Line Mux", "Line 1", "RINPUT1"},
706 {"Right Line Mux", "Line 2", "RINPUT2"},
707 {"Right Line Mux", "Line 3", "RINPUT3"},
708 {"Right Line Mux", "PGA", "Right PGA Mux"},
709 {"Right Line Mux", "Differential", "Differential Mux"},
712 {"Left PGA Mux", "Line 1", "LINPUT1"},
713 {"Left PGA Mux", "Line 2", "LINPUT2"},
714 {"Left PGA Mux", "Line 3", "LINPUT3"},
715 {"Left PGA Mux", "Differential", "Differential Mux"},
718 {"Right PGA Mux", "Line 1", "RINPUT1"},
719 {"Right PGA Mux", "Line 2", "RINPUT2"},
720 {"Right PGA Mux", "Line 3", "RINPUT3"},
721 {"Right PGA Mux", "Differential", "Differential Mux"},
723 /* Differential Mux */
724 {"Differential Mux", "Line 1", "LINPUT1"},
725 {"Differential Mux", "Line 1", "RINPUT1"},
726 {"Differential Mux", "Line 2", "LINPUT2"},
727 {"Differential Mux", "Line 2", "RINPUT2"},
730 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
731 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
732 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
735 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
736 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
737 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
740 {"Left ADC", NULL, "Left ADC Mux"},
741 {"Right ADC", NULL, "Right ADC Mux"},
747 static int wm8750_add_widgets(struct snd_soc_codec *codec)
751 for(i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {
752 snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
755 /* set up audio path audio_mapnects */
756 for(i = 0; audio_map[i][0] != NULL; i++) {
757 snd_soc_dapm_connect_input(codec, audio_map[i][0],
758 audio_map[i][1], audio_map[i][2]);
761 snd_soc_dapm_new_widgets(codec);
773 /* codec hifi mclk clock divider coefficients */
774 static const struct _coeff_div coeff_div[] = {
776 {12288000, 8000, 1536, 0x6, 0x0},
777 {11289600, 8000, 1408, 0x16, 0x0},
778 {18432000, 8000, 2304, 0x7, 0x0},
779 {16934400, 8000, 2112, 0x17, 0x0},
780 {12000000, 8000, 1500, 0x6, 0x1},
783 {11289600, 11025, 1024, 0x18, 0x0},
784 {16934400, 11025, 1536, 0x19, 0x0},
785 {12000000, 11025, 1088, 0x19, 0x1},
788 {12288000, 16000, 768, 0xa, 0x0},
789 {18432000, 16000, 1152, 0xb, 0x0},
790 {12000000, 16000, 750, 0xa, 0x1},
793 {11289600, 22050, 512, 0x1a, 0x0},
794 {16934400, 22050, 768, 0x1b, 0x0},
795 {12000000, 22050, 544, 0x1b, 0x1},
798 {12288000, 32000, 384, 0xc, 0x0},
799 {18432000, 32000, 576, 0xd, 0x0},
800 {12000000, 32000, 375, 0xa, 0x1},
803 {11289600, 44100, 256, 0x10, 0x0},
804 {16934400, 44100, 384, 0x11, 0x0},
805 {12000000, 44100, 272, 0x11, 0x1},
808 {12288000, 48000, 256, 0x0, 0x0},
809 {18432000, 48000, 384, 0x1, 0x0},
810 {12000000, 48000, 250, 0x0, 0x1},
813 {11289600, 88200, 128, 0x1e, 0x0},
814 {16934400, 88200, 192, 0x1f, 0x0},
815 {12000000, 88200, 136, 0x1f, 0x1},
818 {12288000, 96000, 128, 0xe, 0x0},
819 {18432000, 96000, 192, 0xf, 0x0},
820 {12000000, 96000, 125, 0xe, 0x1},
823 static inline int get_coeff(int mclk, int rate)
827 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
828 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
832 printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
837 /* WM8750 supports numerous input clocks per sample rate */
838 static unsigned int wm8750_config_sysclk(struct snd_soc_codec_dai *dai,
839 struct snd_soc_clock_info *info, unsigned int clk)
845 static int wm8750_pcm_prepare(struct snd_pcm_substream *substream)
847 struct snd_soc_pcm_runtime *rtd = substream->private_data;
848 struct snd_soc_device *socdev = rtd->socdev;
849 struct snd_soc_codec *codec = socdev->codec;
850 u16 iface = 0, bfs, srate = 0;
851 int i = get_coeff(rtd->codec_dai->mclk,
852 snd_soc_get_rate(rtd->codec_dai->dai_runtime.pcmrate));
854 /* is coefficient valid ? */
858 bfs = SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs);
860 /* set master/slave audio interface */
861 switch (rtd->codec_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK) {
862 case SND_SOC_DAIFMT_CBM_CFM:
865 case SND_SOC_DAIFMT_CBS_CFS:
869 /* interface format */
870 switch (rtd->codec_dai->dai_runtime.fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
871 case SND_SOC_DAIFMT_I2S:
874 case SND_SOC_DAIFMT_RIGHT_J:
876 case SND_SOC_DAIFMT_LEFT_J:
879 case SND_SOC_DAIFMT_DSP_A:
882 case SND_SOC_DAIFMT_DSP_B:
888 switch (rtd->codec_dai->dai_runtime.pcmfmt) {
889 case SNDRV_PCM_FMTBIT_S16_LE:
891 case SNDRV_PCM_FMTBIT_S20_3LE:
894 case SNDRV_PCM_FMTBIT_S24_LE:
897 case SNDRV_PCM_FMTBIT_S32_LE:
902 /* clock inversion */
903 switch (rtd->codec_dai->dai_runtime.fmt & SND_SOC_DAIFMT_INV_MASK) {
904 case SND_SOC_DAIFMT_NB_NF:
906 case SND_SOC_DAIFMT_IB_IF:
909 case SND_SOC_DAIFMT_IB_NF:
912 case SND_SOC_DAIFMT_NB_IF:
917 /* set bclk divisor rate */
932 /* set iface & srate */
933 wm8750_write(codec, WM8750_IFACE, iface);
934 wm8750_write(codec, WM8750_SRATE, srate |
935 (coeff_div[i].sr << 1) | coeff_div[i].usb);
940 static int wm8750_mute(struct snd_soc_codec *codec,
941 struct snd_soc_codec_dai *dai, int mute)
943 u16 mute_reg = wm8750_read_reg_cache(codec, WM8750_ADCDAC) & 0xfff7;
945 wm8750_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
947 wm8750_write(codec, WM8750_ADCDAC, mute_reg);
951 static int wm8750_dapm_event(struct snd_soc_codec *codec, int event)
953 u16 pwr_reg = wm8750_read_reg_cache(codec, WM8750_PWR1) & 0xfe3e;
956 case SNDRV_CTL_POWER_D0: /* full On */
957 /* set vmid to 50k and unmute dac */
958 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
960 case SNDRV_CTL_POWER_D1: /* partial On */
961 case SNDRV_CTL_POWER_D2: /* partial On */
962 /* set vmid to 5k for quick power up */
963 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
965 case SNDRV_CTL_POWER_D3hot: /* Off, with power */
966 /* mute dac and set vmid to 500k, enable VREF */
967 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
969 case SNDRV_CTL_POWER_D3cold: /* Off, without power */
970 wm8750_write(codec, WM8750_PWR1, 0x0001);
973 codec->dapm_state = event;
977 struct snd_soc_codec_dai wm8750_dai = {
980 .stream_name = "Playback",
985 .stream_name = "Capture",
989 .config_sysclk = wm8750_config_sysclk,
990 .digital_mute = wm8750_mute,
992 .prepare = wm8750_pcm_prepare,
995 .num_modes = ARRAY_SIZE(wm8750_modes),
996 .mode = wm8750_modes,
999 EXPORT_SYMBOL_GPL(wm8750_dai);
1001 static void wm8750_work(struct work_struct *work)
1003 struct snd_soc_codec *codec =
1004 container_of(work, struct snd_soc_codec, delayed_work.work);
1005 wm8750_dapm_event(codec, codec->dapm_state);
1008 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
1010 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1011 struct snd_soc_codec *codec = socdev->codec;
1013 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3cold);
1017 static int wm8750_resume(struct platform_device *pdev)
1019 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1020 struct snd_soc_codec *codec = socdev->codec;
1023 u16 *cache = codec->reg_cache;
1025 /* Sync reg_cache with the hardware */
1026 for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
1027 if (i == WM8750_RESET)
1029 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
1030 data[1] = cache[i] & 0x00ff;
1031 codec->hw_write(codec->control_data, data, 2);
1034 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3hot);
1036 /* charge wm8750 caps */
1037 if (codec->suspend_dapm_state == SNDRV_CTL_POWER_D0) {
1038 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D2);
1039 codec->dapm_state = SNDRV_CTL_POWER_D0;
1040 schedule_delayed_work(&codec->delayed_work,
1041 msecs_to_jiffies(1000));
1048 * initialise the WM8750 driver
1049 * register the mixer and dsp interfaces with the kernel
1051 static int wm8750_init(struct snd_soc_device *socdev)
1053 struct snd_soc_codec *codec = socdev->codec;
1056 codec->name = "WM8750";
1057 codec->owner = THIS_MODULE;
1058 codec->read = wm8750_read_reg_cache;
1059 codec->write = wm8750_write;
1060 codec->dapm_event = wm8750_dapm_event;
1061 codec->dai = &wm8750_dai;
1063 codec->reg_cache_size = ARRAY_SIZE(wm8750_reg);
1066 kzalloc(sizeof(u16) * ARRAY_SIZE(wm8750_reg), GFP_KERNEL);
1067 if (codec->reg_cache == NULL)
1069 memcpy(codec->reg_cache, wm8750_reg,
1070 sizeof(u16) * ARRAY_SIZE(wm8750_reg));
1071 codec->reg_cache_size = sizeof(u16) * ARRAY_SIZE(wm8750_reg);
1073 wm8750_reset(codec);
1076 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1078 kfree(codec->reg_cache);
1082 /* charge output caps */
1083 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D2);
1084 codec->dapm_state = SNDRV_CTL_POWER_D3hot;
1085 schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
1087 /* set the update bits */
1088 reg = wm8750_read_reg_cache(codec, WM8750_LDAC);
1089 wm8750_write(codec, WM8750_LDAC, reg | 0x0100);
1090 reg = wm8750_read_reg_cache(codec, WM8750_RDAC);
1091 wm8750_write(codec, WM8750_RDAC, reg | 0x0100);
1092 reg = wm8750_read_reg_cache(codec, WM8750_LOUT1V);
1093 wm8750_write(codec, WM8750_LOUT1V, reg | 0x0100);
1094 reg = wm8750_read_reg_cache(codec, WM8750_ROUT1V);
1095 wm8750_write(codec, WM8750_ROUT1V, reg | 0x0100);
1096 reg = wm8750_read_reg_cache(codec, WM8750_LOUT2V);
1097 wm8750_write(codec, WM8750_LOUT2V, reg | 0x0100);
1098 reg = wm8750_read_reg_cache(codec, WM8750_ROUT2V);
1099 wm8750_write(codec, WM8750_ROUT2V, reg | 0x0100);
1100 reg = wm8750_read_reg_cache(codec, WM8750_LINVOL);
1101 wm8750_write(codec, WM8750_LINVOL, reg | 0x0100);
1102 reg = wm8750_read_reg_cache(codec, WM8750_RINVOL);
1103 wm8750_write(codec, WM8750_RINVOL, reg | 0x0100);
1105 wm8750_add_controls(codec);
1106 wm8750_add_widgets(codec);
1107 ret = snd_soc_register_card(socdev);
1109 snd_soc_free_pcms(socdev);
1110 snd_soc_dapm_free(socdev);
1116 /* If the i2c layer weren't so broken, we could pass this kind of data
1118 static struct snd_soc_device *wm8750_socdev;
1120 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1123 * WM8731 2 wire address is determined by GPIO5
1124 * state during powerup.
1128 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
1130 /* Magic definition of all other variables and things */
1133 static struct i2c_driver wm8750_i2c_driver;
1134 static struct i2c_client client_template;
1136 static int wm8750_codec_probe(struct i2c_adapter *adap, int addr, int kind)
1138 struct snd_soc_device *socdev = wm8750_socdev;
1139 struct wm8750_setup_data *setup = socdev->codec_data;
1140 struct snd_soc_codec *codec = socdev->codec;
1141 struct i2c_client *i2c;
1144 if (addr != setup->i2c_address)
1147 client_template.adapter = adap;
1148 client_template.addr = addr;
1150 i2c = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
1155 memcpy(i2c, &client_template, sizeof(struct i2c_client));
1156 i2c_set_clientdata(i2c, codec);
1157 codec->control_data = i2c;
1159 ret = i2c_attach_client(i2c);
1161 err("failed to attach codec at addr %x\n", addr);
1165 ret = wm8750_init(socdev);
1167 err("failed to initialise WM8750\n");
1178 static int wm8750_i2c_detach(struct i2c_client *client)
1180 struct snd_soc_codec *codec = i2c_get_clientdata(client);
1181 i2c_detach_client(client);
1182 kfree(codec->reg_cache);
1187 static int wm8750_i2c_attach(struct i2c_adapter *adap)
1189 return i2c_probe(adap, &addr_data, wm8750_codec_probe);
1192 /* corgi i2c codec control layer */
1193 static struct i2c_driver wm8750_i2c_driver = {
1195 .name = "WM8750 I2C Codec",
1196 .owner = THIS_MODULE,
1198 .id = I2C_DRIVERID_WM8750,
1199 .attach_adapter = wm8750_i2c_attach,
1200 .detach_client = wm8750_i2c_detach,
1204 static struct i2c_client client_template = {
1206 .driver = &wm8750_i2c_driver,
1210 static int wm8750_probe(struct platform_device *pdev)
1212 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1213 struct wm8750_setup_data *setup = socdev->codec_data;
1214 struct snd_soc_codec *codec;
1217 info("WM8750 Audio Codec %s", WM8750_VERSION);
1218 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
1222 socdev->codec = codec;
1223 mutex_init(&codec->mutex);
1224 INIT_LIST_HEAD(&codec->dapm_widgets);
1225 INIT_LIST_HEAD(&codec->dapm_paths);
1226 wm8750_socdev = socdev;
1227 INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work);
1228 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1229 if (setup->i2c_address) {
1230 normal_i2c[0] = setup->i2c_address;
1231 codec->hw_write = (hw_write_t)i2c_master_send;
1232 ret = i2c_add_driver(&wm8750_i2c_driver);
1234 printk(KERN_ERR "can't add i2c driver");
1237 /* Add other interfaces here */
1243 /* power down chip */
1244 static int wm8750_remove(struct platform_device *pdev)
1246 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1247 struct snd_soc_codec *codec = socdev->codec;
1249 if (codec->control_data)
1250 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3cold);
1251 flush_scheduled_work();
1252 snd_soc_free_pcms(socdev);
1253 snd_soc_dapm_free(socdev);
1254 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1255 i2c_del_driver(&wm8750_i2c_driver);
1262 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1263 .probe = wm8750_probe,
1264 .remove = wm8750_remove,
1265 .suspend = wm8750_suspend,
1266 .resume = wm8750_resume,
1269 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1271 MODULE_DESCRIPTION("ASoC WM8750 driver");
1272 MODULE_AUTHOR("Liam Girdwood");
1273 MODULE_LICENSE("GPL");