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)
54 static struct workqueue_struct *wm8750_workq = NULL;
55 static struct work_struct wm8750_dapm_work;
58 * wm8750 register cache
59 * We can't read the WM8750 register space when we
60 * are using 2 wire for device control, so we cache them instead.
62 static const u16 wm8750_reg[] = {
63 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
64 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
65 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
66 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
67 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
68 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
69 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
70 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
71 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
72 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
73 0x0079, 0x0079, 0x0079, /* 40 */
76 #define WM8750_HIFI_DAIFMT \
77 (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_RIGHT_J | \
78 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_IB_NF | \
82 (SND_SOC_DAIDIR_PLAYBACK | SND_SOC_DAIDIR_CAPTURE)
84 #define WM8750_HIFI_FSB \
85 (SND_SOC_FSBD(1) | SND_SOC_FSBD(2) | SND_SOC_FSBD(4) | \
86 SND_SOC_FSBD(8) | SND_SOC_FSBD(16))
88 #define WM8750_HIFI_RATES \
89 (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
90 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
91 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
93 #define WM8750_HIFI_BITS \
94 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
95 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
97 static struct snd_soc_dai_mode wm8750_modes[] = {
98 /* common codec frame and clock master modes */
101 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
102 .pcmfmt = WM8750_HIFI_BITS,
103 .pcmrate = SNDRV_PCM_RATE_8000,
104 .pcmdir = WM8750_DIR,
105 .flags = SND_SOC_DAI_BFS_DIV,
107 .bfs = WM8750_HIFI_FSB,
110 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
111 .pcmfmt = WM8750_HIFI_BITS,
112 .pcmrate = SNDRV_PCM_RATE_8000,
113 .pcmdir = WM8750_DIR,
114 .flags = SND_SOC_DAI_BFS_DIV,
116 .bfs = WM8750_HIFI_FSB,
119 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
120 .pcmfmt = WM8750_HIFI_BITS,
121 .pcmrate = SNDRV_PCM_RATE_8000,
122 .pcmdir = WM8750_DIR,
123 .flags = SND_SOC_DAI_BFS_DIV,
125 .bfs = WM8750_HIFI_FSB,
128 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
129 .pcmfmt = WM8750_HIFI_BITS,
130 .pcmrate = SNDRV_PCM_RATE_8000,
131 .pcmdir = WM8750_DIR,
132 .flags = SND_SOC_DAI_BFS_DIV,
134 .bfs = WM8750_HIFI_FSB,
137 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
138 .pcmfmt = WM8750_HIFI_BITS,
139 .pcmrate = SNDRV_PCM_RATE_8000,
140 .pcmdir = WM8750_DIR,
141 .flags = SND_SOC_DAI_BFS_DIV,
143 .bfs = WM8750_HIFI_FSB,
148 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
149 .pcmfmt = WM8750_HIFI_BITS,
150 .pcmrate = SNDRV_PCM_RATE_11025,
151 .pcmdir = WM8750_DIR,
152 .flags = SND_SOC_DAI_BFS_DIV,
154 .bfs = WM8750_HIFI_FSB,
157 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
158 .pcmfmt = WM8750_HIFI_BITS,
159 .pcmrate = SNDRV_PCM_RATE_11025,
160 .pcmdir = WM8750_DIR,
161 .flags = SND_SOC_DAI_BFS_DIV,
163 .bfs = WM8750_HIFI_FSB,
166 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
167 .pcmfmt = WM8750_HIFI_BITS,
168 .pcmrate = SNDRV_PCM_RATE_11025,
169 .pcmdir = WM8750_DIR,
170 .flags = SND_SOC_DAI_BFS_DIV,
172 .bfs = WM8750_HIFI_FSB,
177 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
178 .pcmfmt = WM8750_HIFI_BITS,
179 .pcmrate = SNDRV_PCM_RATE_16000,
180 .pcmdir = WM8750_DIR,
181 .flags = SND_SOC_DAI_BFS_DIV,
183 .bfs = WM8750_HIFI_FSB,
186 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
187 .pcmfmt = WM8750_HIFI_BITS,
188 .pcmrate = SNDRV_PCM_RATE_16000,
189 .pcmdir = WM8750_DIR,
190 .flags = SND_SOC_DAI_BFS_DIV,
192 .bfs = WM8750_HIFI_FSB
195 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
196 .pcmfmt = WM8750_HIFI_BITS,
197 .pcmrate = SNDRV_PCM_RATE_16000,
198 .pcmdir = WM8750_DIR,
199 .flags = SND_SOC_DAI_BFS_DIV,
201 .bfs = WM8750_HIFI_FSB,
206 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
207 .pcmfmt = WM8750_HIFI_BITS,
208 .pcmrate = SNDRV_PCM_RATE_22050,
209 .pcmdir = WM8750_DIR,
210 .flags = SND_SOC_DAI_BFS_DIV,
212 .bfs = WM8750_HIFI_FSB,
215 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
216 .pcmfmt = WM8750_HIFI_BITS,
217 .pcmrate = SNDRV_PCM_RATE_22050,
218 .pcmdir = WM8750_DIR,
219 .flags = SND_SOC_DAI_BFS_DIV,
221 .bfs = WM8750_HIFI_FSB,
224 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
225 .pcmfmt = WM8750_HIFI_BITS,
226 .pcmrate = SNDRV_PCM_RATE_22050,
227 .pcmdir = WM8750_DIR,
228 .flags = SND_SOC_DAI_BFS_DIV,
230 .bfs = WM8750_HIFI_FSB,
235 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
236 .pcmfmt = WM8750_HIFI_BITS,
237 .pcmrate = SNDRV_PCM_RATE_32000,
238 .pcmdir = WM8750_DIR,
239 .flags = SND_SOC_DAI_BFS_DIV,
241 .bfs = WM8750_HIFI_FSB,
244 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
245 .pcmfmt = WM8750_HIFI_BITS,
246 .pcmrate = SNDRV_PCM_RATE_32000,
247 .pcmdir = WM8750_DIR,
248 .flags = SND_SOC_DAI_BFS_DIV,
250 .bfs = WM8750_HIFI_FSB,
253 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
254 .pcmfmt = WM8750_HIFI_BITS,
255 .pcmrate = SNDRV_PCM_RATE_32000,
256 .pcmdir = WM8750_DIR,
257 .flags = SND_SOC_DAI_BFS_DIV,
259 .bfs = WM8750_HIFI_FSB,
264 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
265 .pcmfmt = WM8750_HIFI_BITS,
266 .pcmrate = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
267 .pcmdir = WM8750_DIR,
268 .flags = SND_SOC_DAI_BFS_DIV,
270 .bfs = WM8750_HIFI_FSB,
273 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
274 .pcmfmt = WM8750_HIFI_BITS,
275 .pcmrate = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
276 .pcmdir = WM8750_DIR,
277 .flags = SND_SOC_DAI_BFS_DIV,
279 .bfs = WM8750_HIFI_FSB,
282 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
283 .pcmfmt = WM8750_HIFI_BITS,
284 .pcmrate = SNDRV_PCM_RATE_44100,
285 .pcmdir = WM8750_DIR,
286 .flags = SND_SOC_DAI_BFS_DIV,
288 .bfs = WM8750_HIFI_FSB,
291 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
292 .pcmfmt = WM8750_HIFI_BITS,
293 .pcmrate = SNDRV_PCM_RATE_48000,
294 .pcmdir = WM8750_DIR,
295 .flags = SND_SOC_DAI_BFS_DIV,
297 .bfs = WM8750_HIFI_FSB,
302 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
303 .pcmfmt = WM8750_HIFI_BITS,
304 .pcmrate = SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000,
305 .pcmdir = WM8750_DIR,
306 .flags = SND_SOC_DAI_BFS_DIV,
308 .bfs = WM8750_HIFI_FSB,
311 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
312 .pcmfmt = WM8750_HIFI_BITS,
313 .pcmrate = SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000,
314 .pcmdir = WM8750_DIR,
315 .flags = SND_SOC_DAI_BFS_DIV,
317 .bfs = WM8750_HIFI_FSB,
320 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
321 .pcmfmt = WM8750_HIFI_BITS,
322 .pcmrate = SNDRV_PCM_RATE_88200,
323 .pcmdir = WM8750_DIR,
324 .flags = SND_SOC_DAI_BFS_DIV,
326 .bfs = WM8750_HIFI_FSB,
329 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBM_CFM,
330 .pcmfmt = WM8750_HIFI_BITS,
331 .pcmrate = SNDRV_PCM_RATE_96000,
332 .pcmdir = WM8750_DIR,
333 .flags = SND_SOC_DAI_BFS_DIV,
335 .bfs = WM8750_HIFI_FSB,
338 /* codec frame and clock slave modes */
340 .fmt = WM8750_HIFI_DAIFMT | SND_SOC_DAIFMT_CBS_CFS,
341 .pcmfmt = WM8750_HIFI_BITS,
342 .pcmrate = WM8750_HIFI_RATES,
343 .pcmdir = WM8750_DIR,
344 .flags = SND_SOC_DAI_BFS_DIV,
345 .fs = SND_SOC_FS_ALL,
346 .bfs = SND_SOC_FSB_ALL,
351 * read wm8750 register cache
353 static inline unsigned int wm8750_read_reg_cache(struct snd_soc_codec *codec,
356 u16 *cache = codec->reg_cache;
357 if (reg > WM8750_CACHE_REGNUM)
363 * write wm8750 register cache
365 static inline void wm8750_write_reg_cache(struct snd_soc_codec *codec,
366 unsigned int reg, unsigned int value)
368 u16 *cache = codec->reg_cache;
369 if (reg > WM8750_CACHE_REGNUM)
374 static int wm8750_write(struct snd_soc_codec *codec, unsigned int reg,
380 * D15..D9 WM8753 register offset
381 * D8...D0 register data
383 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
384 data[1] = value & 0x00ff;
386 wm8750_write_reg_cache (codec, reg, value);
387 if (codec->hw_write(codec->control_data, data, 2) == 2)
393 #define wm8750_reset(c) wm8750_write(c, WM8750_RESET, 0)
398 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
399 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
400 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
401 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
402 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
403 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
404 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
405 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
407 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
409 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
411 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
413 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
414 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
416 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
417 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
418 "Mono (Right)", "Digital Mono"};
420 static const struct soc_enum wm8750_enum[] = {
421 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
422 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
423 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
424 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
425 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
426 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
427 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
428 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
429 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
430 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
431 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
432 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
433 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
434 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
435 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
436 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
437 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
441 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
443 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
444 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
445 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
447 SOC_DOUBLE_R("Out1 Playback ZC Switch", WM8750_LOUT1V,
448 WM8750_ROUT1V, 7, 1, 0),
449 SOC_DOUBLE_R("Out2 Playback ZC Switch", WM8750_LOUT2V,
450 WM8750_ROUT2V, 7, 1, 0),
452 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
454 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
455 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
456 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
458 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
460 SOC_ENUM("Bass Boost", wm8750_enum[0]),
461 SOC_ENUM("Bass Filter", wm8750_enum[1]),
462 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
464 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 0),
465 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
467 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
468 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
469 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
470 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
471 SOC_ENUM("3D Mode", wm8750_enum[5]),
473 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
474 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
475 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
476 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
477 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
478 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
479 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
480 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
481 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
482 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
484 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
485 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
487 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
488 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
490 SOC_SINGLE("Right Out2 Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
493 /* ADCDAC Bit 0 - ADCHPD */
494 /* ADCDAC Bit 4 - HPOR */
495 /* ADCTL1 Bit 2,3 - DATSEL */
496 /* ADCTL1 Bit 4,5 - DMONOMIX */
497 /* ADCTL1 Bit 6,7 - VSEL */
498 /* ADCTL2 Bit 2 - LRCM */
499 /* ADCTL2 Bit 3 - TRI */
500 /* ADCTL3 Bit 5 - HPFLREN */
501 /* ADCTL3 Bit 6 - VROI */
502 /* ADCTL3 Bit 7,8 - ADCLRM */
503 /* ADCIN Bit 4 - LDCM */
504 /* ADCIN Bit 5 - RDCM */
506 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
508 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
509 WM8750_LOUTM2, 4, 7, 1),
510 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
511 WM8750_ROUTM2, 4, 7, 1),
512 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
513 WM8750_MOUTM2, 4, 7, 1),
515 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
517 SOC_DOUBLE_R("Out1 Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V, 0, 127, 0),
518 SOC_DOUBLE_R("Out2 Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V, 0, 127, 0),
520 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
524 /* add non dapm controls */
525 static int wm8750_add_controls(struct snd_soc_codec *codec)
529 for (i = 0; i < ARRAY_SIZE(wm8750_snd_controls); i++) {
530 err = snd_ctl_add(codec->card,
531 snd_soc_cnew(&wm8750_snd_controls[i],codec, NULL));
543 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
544 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
545 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
546 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
547 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
551 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
552 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
553 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
554 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
555 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
559 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
560 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
561 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
562 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
563 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
567 static const struct snd_kcontrol_new wm8750_left_line_controls =
568 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
571 static const struct snd_kcontrol_new wm8750_right_line_controls =
572 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
575 static const struct snd_kcontrol_new wm8750_left_pga_controls =
576 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
579 static const struct snd_kcontrol_new wm8750_right_pga_controls =
580 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
583 static const struct snd_kcontrol_new wm8750_out3_controls =
584 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
586 /* Differential Mux */
587 static const struct snd_kcontrol_new wm8750_diffmux_controls =
588 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
591 static const struct snd_kcontrol_new wm8750_monomux_controls =
592 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
594 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
595 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
596 &wm8750_left_mixer_controls[0],
597 ARRAY_SIZE(wm8750_left_mixer_controls)),
598 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
599 &wm8750_right_mixer_controls[0],
600 ARRAY_SIZE(wm8750_right_mixer_controls)),
601 SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
602 &wm8750_mono_mixer_controls[0],
603 ARRAY_SIZE(wm8750_mono_mixer_controls)),
605 SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
606 SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
607 SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
608 SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
609 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
610 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
612 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
613 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
614 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
616 SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
617 &wm8750_left_pga_controls),
618 SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
619 &wm8750_right_pga_controls),
620 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
621 &wm8750_left_line_controls),
622 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
623 &wm8750_right_line_controls),
625 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
626 SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
627 SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
629 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
630 &wm8750_diffmux_controls),
631 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
632 &wm8750_monomux_controls),
633 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
634 &wm8750_monomux_controls),
636 SND_SOC_DAPM_OUTPUT("LOUT1"),
637 SND_SOC_DAPM_OUTPUT("ROUT1"),
638 SND_SOC_DAPM_OUTPUT("LOUT2"),
639 SND_SOC_DAPM_OUTPUT("ROUT2"),
640 SND_SOC_DAPM_OUTPUT("MONO"),
641 SND_SOC_DAPM_OUTPUT("OUT3"),
643 SND_SOC_DAPM_INPUT("LINPUT1"),
644 SND_SOC_DAPM_INPUT("LINPUT2"),
645 SND_SOC_DAPM_INPUT("LINPUT3"),
646 SND_SOC_DAPM_INPUT("RINPUT1"),
647 SND_SOC_DAPM_INPUT("RINPUT2"),
648 SND_SOC_DAPM_INPUT("RINPUT3"),
651 static const char *audio_map[][3] = {
653 {"Left Mixer", "Playback Switch", "Left DAC"},
654 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
655 {"Left Mixer", "Right Playback Switch", "Right DAC"},
656 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
659 {"Right Mixer", "Left Playback Switch", "Left DAC"},
660 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
661 {"Right Mixer", "Playback Switch", "Right DAC"},
662 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
665 {"Left Out 1", NULL, "Left Mixer"},
666 {"LOUT1", NULL, "Left Out 1"},
669 {"Left Out 2", NULL, "Left Mixer"},
670 {"LOUT2", NULL, "Left Out 2"},
673 {"Right Out 1", NULL, "Right Mixer"},
674 {"ROUT1", NULL, "Right Out 1"},
677 {"Right Out 2", NULL, "Right Mixer"},
678 {"ROUT2", NULL, "Right Out 2"},
681 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
682 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
683 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
684 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
687 {"Mono Out 1", NULL, "Mono Mixer"},
688 {"MONO1", NULL, "Mono Out 1"},
691 {"Out3 Mux", "VREF", "VREF"},
692 {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
693 {"Out3 Mux", "ROUT1", "Right Mixer"},
694 {"Out3 Mux", "MonoOut", "MONO1"},
695 {"Out 3", NULL, "Out3 Mux"},
696 {"OUT3", NULL, "Out 3"},
699 {"Left Line Mux", "Line 1", "LINPUT1"},
700 {"Left Line Mux", "Line 2", "LINPUT2"},
701 {"Left Line Mux", "Line 3", "LINPUT3"},
702 {"Left Line Mux", "PGA", "Left PGA Mux"},
703 {"Left Line Mux", "Differential", "Differential Mux"},
706 {"Right Line Mux", "Line 1", "RINPUT1"},
707 {"Right Line Mux", "Line 2", "RINPUT2"},
708 {"Right Line Mux", "Line 3", "RINPUT3"},
709 {"Right Line Mux", "PGA", "Right PGA Mux"},
710 {"Right Line Mux", "Differential", "Differential Mux"},
713 {"Left PGA Mux", "Line 1", "LINPUT1"},
714 {"Left PGA Mux", "Line 2", "LINPUT2"},
715 {"Left PGA Mux", "Line 3", "LINPUT3"},
716 {"Left PGA Mux", "Differential", "Differential Mux"},
719 {"Right PGA Mux", "Line 1", "RINPUT1"},
720 {"Right PGA Mux", "Line 2", "RINPUT2"},
721 {"Right PGA Mux", "Line 3", "RINPUT3"},
722 {"Right PGA Mux", "Differential", "Differential Mux"},
724 /* Differential Mux */
725 {"Differential Mux", "Line 1", "LINPUT1"},
726 {"Differential Mux", "Line 1", "RINPUT1"},
727 {"Differential Mux", "Line 2", "LINPUT2"},
728 {"Differential Mux", "Line 2", "RINPUT2"},
731 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
732 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
733 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
736 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
737 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
738 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
741 {"Left ADC", NULL, "Left ADC Mux"},
742 {"Right ADC", NULL, "Right ADC Mux"},
748 static int wm8750_add_widgets(struct snd_soc_codec *codec)
752 for(i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {
753 snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
756 /* set up audio path audio_mapnects */
757 for(i = 0; audio_map[i][0] != NULL; i++) {
758 snd_soc_dapm_connect_input(codec, audio_map[i][0],
759 audio_map[i][1], audio_map[i][2]);
762 snd_soc_dapm_new_widgets(codec);
774 /* codec hifi mclk clock divider coefficients */
775 static const struct _coeff_div coeff_div[] = {
777 {12288000, 8000, 1536, 0x6, 0x0},
778 {11289600, 8000, 1408, 0x16, 0x0},
779 {18432000, 8000, 2304, 0x7, 0x0},
780 {16934400, 8000, 2112, 0x17, 0x0},
781 {12000000, 8000, 1500, 0x6, 0x1},
784 {11289600, 11025, 1024, 0x18, 0x0},
785 {16934400, 11025, 1536, 0x19, 0x0},
786 {12000000, 11025, 1088, 0x19, 0x1},
789 {12288000, 16000, 768, 0xa, 0x0},
790 {18432000, 16000, 1152, 0xb, 0x0},
791 {12000000, 16000, 750, 0xa, 0x1},
794 {11289600, 22050, 512, 0x1a, 0x0},
795 {16934400, 22050, 768, 0x1b, 0x0},
796 {12000000, 22050, 544, 0x1b, 0x1},
799 {12288000, 32000, 384, 0xc, 0x0},
800 {18432000, 32000, 576, 0xd, 0x0},
801 {12000000, 32000, 375, 0xa, 0x1},
804 {11289600, 44100, 256, 0x10, 0x0},
805 {16934400, 44100, 384, 0x11, 0x0},
806 {12000000, 44100, 272, 0x11, 0x1},
809 {12288000, 48000, 256, 0x0, 0x0},
810 {18432000, 48000, 384, 0x1, 0x0},
811 {12000000, 48000, 250, 0x0, 0x1},
814 {11289600, 88200, 128, 0x1e, 0x0},
815 {16934400, 88200, 192, 0x1f, 0x0},
816 {12000000, 88200, 136, 0x1f, 0x1},
819 {12288000, 96000, 128, 0xe, 0x0},
820 {18432000, 96000, 192, 0xf, 0x0},
821 {12000000, 96000, 125, 0xe, 0x1},
824 static inline int get_coeff(int mclk, int rate)
828 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
829 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
833 printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
838 /* WM8750 supports numerous input clocks per sample rate */
839 static unsigned int wm8750_config_sysclk(struct snd_soc_codec_dai *dai,
840 struct snd_soc_clock_info *info, unsigned int clk)
846 static int wm8750_pcm_prepare(struct snd_pcm_substream *substream)
848 struct snd_soc_pcm_runtime *rtd = substream->private_data;
849 struct snd_soc_device *socdev = rtd->socdev;
850 struct snd_soc_codec *codec = socdev->codec;
851 u16 iface = 0, bfs, srate = 0;
852 int i = get_coeff(rtd->codec_dai->mclk,
853 snd_soc_get_rate(rtd->codec_dai->dai_runtime.pcmrate));
855 /* is coefficient valid ? */
859 bfs = SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs);
861 /* set master/slave audio interface */
862 switch (rtd->codec_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK) {
863 case SND_SOC_DAIFMT_CBM_CFM:
866 case SND_SOC_DAIFMT_CBS_CFS:
870 /* interface format */
871 switch (rtd->codec_dai->dai_runtime.fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
872 case SND_SOC_DAIFMT_I2S:
875 case SND_SOC_DAIFMT_RIGHT_J:
877 case SND_SOC_DAIFMT_LEFT_J:
880 case SND_SOC_DAIFMT_DSP_A:
883 case SND_SOC_DAIFMT_DSP_B:
889 switch (rtd->codec_dai->dai_runtime.pcmfmt) {
890 case SNDRV_PCM_FMTBIT_S16_LE:
892 case SNDRV_PCM_FMTBIT_S20_3LE:
895 case SNDRV_PCM_FMTBIT_S24_LE:
898 case SNDRV_PCM_FMTBIT_S32_LE:
903 /* clock inversion */
904 switch (rtd->codec_dai->dai_runtime.fmt & SND_SOC_DAIFMT_INV_MASK) {
905 case SND_SOC_DAIFMT_NB_NF:
907 case SND_SOC_DAIFMT_IB_IF:
910 case SND_SOC_DAIFMT_IB_NF:
913 case SND_SOC_DAIFMT_NB_IF:
918 /* set bclk divisor rate */
933 /* set iface & srate */
934 wm8750_write(codec, WM8750_IFACE, iface);
935 wm8750_write(codec, WM8750_SRATE, srate |
936 (coeff_div[i].sr << 1) | coeff_div[i].usb);
941 static int wm8750_mute(struct snd_soc_codec *codec,
942 struct snd_soc_codec_dai *dai, int mute)
944 u16 mute_reg = wm8750_read_reg_cache(codec, WM8750_ADCDAC) & 0xfff7;
946 wm8750_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
948 wm8750_write(codec, WM8750_ADCDAC, mute_reg);
952 static int wm8750_dapm_event(struct snd_soc_codec *codec, int event)
954 u16 pwr_reg = wm8750_read_reg_cache(codec, WM8750_PWR1) & 0xfe3e;
957 case SNDRV_CTL_POWER_D0: /* full On */
958 /* set vmid to 50k and unmute dac */
959 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
961 case SNDRV_CTL_POWER_D1: /* partial On */
962 case SNDRV_CTL_POWER_D2: /* partial On */
963 /* set vmid to 5k for quick power up */
964 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
966 case SNDRV_CTL_POWER_D3hot: /* Off, with power */
967 /* mute dac and set vmid to 500k, enable VREF */
968 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
970 case SNDRV_CTL_POWER_D3cold: /* Off, without power */
971 wm8750_write(codec, WM8750_PWR1, 0x0001);
974 codec->dapm_state = event;
978 struct snd_soc_codec_dai wm8750_dai = {
981 .stream_name = "Playback",
986 .stream_name = "Capture",
990 .config_sysclk = wm8750_config_sysclk,
991 .digital_mute = wm8750_mute,
993 .prepare = wm8750_pcm_prepare,
996 .num_modes = ARRAY_SIZE(wm8750_modes),
997 .mode = wm8750_modes,
1000 EXPORT_SYMBOL_GPL(wm8750_dai);
1002 static void wm8750_work(void *data)
1004 struct snd_soc_codec *codec = (struct snd_soc_codec *)data;
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 queue_delayed_work(wm8750_workq, &wm8750_dapm_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 queue_delayed_work(wm8750_workq, &wm8750_dapm_work,
1086 msecs_to_jiffies(1000));
1088 /* set the update bits */
1089 reg = wm8750_read_reg_cache(codec, WM8750_LDAC);
1090 wm8750_write(codec, WM8750_LDAC, reg | 0x0100);
1091 reg = wm8750_read_reg_cache(codec, WM8750_RDAC);
1092 wm8750_write(codec, WM8750_RDAC, reg | 0x0100);
1093 reg = wm8750_read_reg_cache(codec, WM8750_LOUT1V);
1094 wm8750_write(codec, WM8750_LOUT1V, reg | 0x0100);
1095 reg = wm8750_read_reg_cache(codec, WM8750_ROUT1V);
1096 wm8750_write(codec, WM8750_ROUT1V, reg | 0x0100);
1097 reg = wm8750_read_reg_cache(codec, WM8750_LOUT2V);
1098 wm8750_write(codec, WM8750_LOUT2V, reg | 0x0100);
1099 reg = wm8750_read_reg_cache(codec, WM8750_ROUT2V);
1100 wm8750_write(codec, WM8750_ROUT2V, reg | 0x0100);
1101 reg = wm8750_read_reg_cache(codec, WM8750_LINVOL);
1102 wm8750_write(codec, WM8750_LINVOL, reg | 0x0100);
1103 reg = wm8750_read_reg_cache(codec, WM8750_RINVOL);
1104 wm8750_write(codec, WM8750_RINVOL, reg | 0x0100);
1106 wm8750_add_controls(codec);
1107 wm8750_add_widgets(codec);
1108 ret = snd_soc_register_card(socdev);
1110 snd_soc_free_pcms(socdev);
1111 snd_soc_dapm_free(socdev);
1117 /* If the i2c layer weren't so broken, we could pass this kind of data
1119 static struct snd_soc_device *wm8750_socdev;
1121 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1124 * WM8731 2 wire address is determined by GPIO5
1125 * state during powerup.
1129 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
1131 /* Magic definition of all other variables and things */
1134 static struct i2c_driver wm8750_i2c_driver;
1135 static struct i2c_client client_template;
1137 static int wm8750_codec_probe(struct i2c_adapter *adap, int addr, int kind)
1139 struct snd_soc_device *socdev = wm8750_socdev;
1140 struct wm8750_setup_data *setup = socdev->codec_data;
1141 struct snd_soc_codec *codec = socdev->codec;
1142 struct i2c_client *i2c;
1145 if (addr != setup->i2c_address)
1148 client_template.adapter = adap;
1149 client_template.addr = addr;
1151 i2c = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
1156 memcpy(i2c, &client_template, sizeof(struct i2c_client));
1157 i2c_set_clientdata(i2c, codec);
1158 codec->control_data = i2c;
1160 ret = i2c_attach_client(i2c);
1162 err("failed to attach codec at addr %x\n", addr);
1166 ret = wm8750_init(socdev);
1168 err("failed to initialise WM8750\n");
1179 static int wm8750_i2c_detach(struct i2c_client *client)
1181 struct snd_soc_codec *codec = i2c_get_clientdata(client);
1182 i2c_detach_client(client);
1183 kfree(codec->reg_cache);
1188 static int wm8750_i2c_attach(struct i2c_adapter *adap)
1190 return i2c_probe(adap, &addr_data, wm8750_codec_probe);
1193 /* corgi i2c codec control layer */
1194 static struct i2c_driver wm8750_i2c_driver = {
1196 .name = "WM8750 I2C Codec",
1197 .owner = THIS_MODULE,
1199 .id = I2C_DRIVERID_WM8750,
1200 .attach_adapter = wm8750_i2c_attach,
1201 .detach_client = wm8750_i2c_detach,
1205 static struct i2c_client client_template = {
1207 .driver = &wm8750_i2c_driver,
1211 static int wm8750_probe(struct platform_device *pdev)
1213 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1214 struct wm8750_setup_data *setup = socdev->codec_data;
1215 struct snd_soc_codec *codec;
1218 info("WM8750 Audio Codec %s", WM8750_VERSION);
1219 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
1223 socdev->codec = codec;
1224 mutex_init(&codec->mutex);
1225 INIT_LIST_HEAD(&codec->dapm_widgets);
1226 INIT_LIST_HEAD(&codec->dapm_paths);
1227 wm8750_socdev = socdev;
1228 INIT_WORK(&wm8750_dapm_work, wm8750_work, codec);
1229 wm8750_workq = create_workqueue("wm8750");
1230 if (wm8750_workq == NULL) {
1234 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1235 if (setup->i2c_address) {
1236 normal_i2c[0] = setup->i2c_address;
1237 codec->hw_write = (hw_write_t)i2c_master_send;
1238 ret = i2c_add_driver(&wm8750_i2c_driver);
1240 printk(KERN_ERR "can't add i2c driver");
1243 /* Add other interfaces here */
1249 /* power down chip */
1250 static int wm8750_remove(struct platform_device *pdev)
1252 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1253 struct snd_soc_codec *codec = socdev->codec;
1255 if (codec->control_data)
1256 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3cold);
1258 destroy_workqueue(wm8750_workq);
1259 snd_soc_free_pcms(socdev);
1260 snd_soc_dapm_free(socdev);
1261 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1262 i2c_del_driver(&wm8750_i2c_driver);
1269 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1270 .probe = wm8750_probe,
1271 .remove = wm8750_remove,
1272 .suspend = wm8750_suspend,
1273 .resume = wm8750_resume,
1276 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1278 MODULE_DESCRIPTION("ASoC WM8750 driver");
1279 MODULE_AUTHOR("Liam Girdwood");
1280 MODULE_LICENSE("GPL");