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bd6d4177 MA |
1 | /* |
2 | * wm8711.c -- WM8711 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2006 Wolfson Microelectronics | |
5 | * | |
6 | * Author: Mike Arthur <linux@wolfsonmicro.com> | |
7 | * | |
8 | * Based on wm8731.c by Richard Purdie | |
9 | * | |
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. | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/pm.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <sound/core.h> | |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/soc.h> | |
26 | #include <sound/soc-dapm.h> | |
27 | #include <sound/initval.h> | |
28 | ||
29 | #include "wm8711.h" | |
30 | ||
318b0b8d | 31 | static struct snd_soc_codec *wm8711_codec; |
bd6d4177 MA |
32 | |
33 | /* codec private data */ | |
34 | struct wm8711_priv { | |
318b0b8d MB |
35 | struct snd_soc_codec codec; |
36 | u16 reg_cache[WM8711_CACHEREGNUM]; | |
bd6d4177 MA |
37 | unsigned int sysclk; |
38 | }; | |
39 | ||
40 | /* | |
41 | * wm8711 register cache | |
42 | * We can't read the WM8711 register space when we are | |
43 | * using 2 wire for device control, so we cache them instead. | |
44 | * There is no point in caching the reset register | |
45 | */ | |
46 | static const u16 wm8711_reg[WM8711_CACHEREGNUM] = { | |
47 | 0x0079, 0x0079, 0x000a, 0x0008, | |
48 | 0x009f, 0x000a, 0x0000, 0x0000 | |
49 | }; | |
50 | ||
51 | /* | |
52 | * read wm8711 register cache | |
53 | */ | |
54 | static inline unsigned int wm8711_read_reg_cache(struct snd_soc_codec *codec, | |
55 | unsigned int reg) | |
56 | { | |
57 | u16 *cache = codec->reg_cache; | |
58 | if (reg == WM8711_RESET) | |
59 | return 0; | |
60 | if (reg >= WM8711_CACHEREGNUM) | |
61 | return -1; | |
62 | return cache[reg]; | |
63 | } | |
64 | ||
65 | /* | |
66 | * write wm8711 register cache | |
67 | */ | |
68 | static inline void wm8711_write_reg_cache(struct snd_soc_codec *codec, | |
69 | u16 reg, unsigned int value) | |
70 | { | |
71 | u16 *cache = codec->reg_cache; | |
72 | if (reg >= WM8711_CACHEREGNUM) | |
73 | return; | |
74 | cache[reg] = value; | |
75 | } | |
76 | ||
77 | /* | |
78 | * write to the WM8711 register space | |
79 | */ | |
80 | static int wm8711_write(struct snd_soc_codec *codec, unsigned int reg, | |
81 | unsigned int value) | |
82 | { | |
83 | u8 data[2]; | |
84 | ||
85 | /* data is | |
86 | * D15..D9 WM8753 register offset | |
87 | * D8...D0 register data | |
88 | */ | |
89 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); | |
90 | data[1] = value & 0x00ff; | |
91 | ||
92 | wm8711_write_reg_cache(codec, reg, value); | |
93 | if (codec->hw_write(codec->control_data, data, 2) == 2) | |
94 | return 0; | |
95 | else | |
96 | return -EIO; | |
97 | } | |
98 | ||
99 | #define wm8711_reset(c) wm8711_write(c, WM8711_RESET, 0) | |
100 | ||
101 | static const struct snd_kcontrol_new wm8711_snd_controls[] = { | |
102 | ||
103 | SOC_DOUBLE_R("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V, | |
104 | 0, 127, 0), | |
105 | SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V, | |
106 | 7, 1, 0), | |
107 | ||
108 | }; | |
109 | ||
110 | /* add non dapm controls */ | |
111 | static int wm8711_add_controls(struct snd_soc_codec *codec) | |
112 | { | |
113 | int err, i; | |
114 | ||
115 | for (i = 0; i < ARRAY_SIZE(wm8711_snd_controls); i++) { | |
116 | err = snd_ctl_add(codec->card, | |
117 | snd_soc_cnew(&wm8711_snd_controls[i], codec, | |
118 | NULL)); | |
119 | if (err < 0) | |
120 | return err; | |
121 | } | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | /* Output Mixer */ | |
127 | static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = { | |
128 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0), | |
129 | SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0), | |
130 | }; | |
131 | ||
132 | static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = { | |
133 | SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1, | |
134 | &wm8711_output_mixer_controls[0], | |
135 | ARRAY_SIZE(wm8711_output_mixer_controls)), | |
136 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1), | |
137 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
138 | SND_SOC_DAPM_OUTPUT("LHPOUT"), | |
139 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
140 | SND_SOC_DAPM_OUTPUT("RHPOUT"), | |
141 | }; | |
142 | ||
143 | static const struct snd_soc_dapm_route intercon[] = { | |
144 | /* output mixer */ | |
145 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, | |
146 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, | |
147 | ||
148 | /* outputs */ | |
149 | {"RHPOUT", NULL, "Output Mixer"}, | |
150 | {"ROUT", NULL, "Output Mixer"}, | |
151 | {"LHPOUT", NULL, "Output Mixer"}, | |
152 | {"LOUT", NULL, "Output Mixer"}, | |
153 | }; | |
154 | ||
155 | static int wm8711_add_widgets(struct snd_soc_codec *codec) | |
156 | { | |
157 | snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets, | |
158 | ARRAY_SIZE(wm8711_dapm_widgets)); | |
159 | ||
160 | snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); | |
161 | ||
162 | snd_soc_dapm_new_widgets(codec); | |
163 | return 0; | |
164 | } | |
165 | ||
166 | struct _coeff_div { | |
167 | u32 mclk; | |
168 | u32 rate; | |
169 | u16 fs; | |
170 | u8 sr:4; | |
171 | u8 bosr:1; | |
172 | u8 usb:1; | |
173 | }; | |
174 | ||
175 | /* codec mclk clock divider coefficients */ | |
176 | static const struct _coeff_div coeff_div[] = { | |
177 | /* 48k */ | |
178 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, | |
179 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, | |
180 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, | |
181 | ||
182 | /* 32k */ | |
183 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, | |
184 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, | |
185 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, | |
186 | ||
187 | /* 8k */ | |
188 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, | |
189 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, | |
190 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, | |
191 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, | |
192 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, | |
193 | ||
194 | /* 96k */ | |
195 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, | |
196 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, | |
197 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, | |
198 | ||
199 | /* 44.1k */ | |
200 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, | |
201 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, | |
202 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, | |
203 | ||
204 | /* 88.2k */ | |
205 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, | |
206 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, | |
207 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, | |
208 | }; | |
209 | ||
210 | static inline int get_coeff(int mclk, int rate) | |
211 | { | |
212 | int i; | |
213 | ||
214 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
215 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
216 | return i; | |
217 | } | |
218 | return 0; | |
219 | } | |
220 | ||
221 | static int wm8711_hw_params(struct snd_pcm_substream *substream, | |
222 | struct snd_pcm_hw_params *params, | |
223 | struct snd_soc_dai *dai) | |
224 | { | |
225 | struct snd_soc_codec *codec = dai->codec; | |
226 | struct wm8711_priv *wm8711 = codec->private_data; | |
227 | u16 iface = wm8711_read_reg_cache(codec, WM8711_IFACE) & 0xfffc; | |
228 | int i = get_coeff(wm8711->sysclk, params_rate(params)); | |
229 | u16 srate = (coeff_div[i].sr << 2) | | |
230 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; | |
231 | ||
232 | wm8711_write(codec, WM8711_SRATE, srate); | |
233 | ||
234 | /* bit size */ | |
235 | switch (params_format(params)) { | |
236 | case SNDRV_PCM_FORMAT_S16_LE: | |
237 | break; | |
238 | case SNDRV_PCM_FORMAT_S20_3LE: | |
239 | iface |= 0x0004; | |
240 | break; | |
241 | case SNDRV_PCM_FORMAT_S24_LE: | |
242 | iface |= 0x0008; | |
243 | break; | |
244 | } | |
245 | ||
246 | wm8711_write(codec, WM8711_IFACE, iface); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | static int wm8711_pcm_prepare(struct snd_pcm_substream *substream, | |
251 | struct snd_soc_dai *dai) | |
252 | { | |
253 | struct snd_soc_codec *codec = dai->codec; | |
254 | ||
255 | /* set active */ | |
256 | wm8711_write(codec, WM8711_ACTIVE, 0x0001); | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | static void wm8711_shutdown(struct snd_pcm_substream *substream, | |
262 | struct snd_soc_dai *dai) | |
263 | { | |
264 | struct snd_soc_codec *codec = dai->codec; | |
265 | ||
266 | /* deactivate */ | |
267 | if (!codec->active) { | |
268 | udelay(50); | |
269 | wm8711_write(codec, WM8711_ACTIVE, 0x0); | |
270 | } | |
271 | } | |
272 | ||
273 | static int wm8711_mute(struct snd_soc_dai *dai, int mute) | |
274 | { | |
275 | struct snd_soc_codec *codec = dai->codec; | |
276 | u16 mute_reg = wm8711_read_reg_cache(codec, WM8711_APDIGI) & 0xfff7; | |
277 | ||
278 | if (mute) | |
279 | wm8711_write(codec, WM8711_APDIGI, mute_reg | 0x8); | |
280 | else | |
281 | wm8711_write(codec, WM8711_APDIGI, mute_reg); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
287 | int clk_id, unsigned int freq, int dir) | |
288 | { | |
289 | struct snd_soc_codec *codec = codec_dai->codec; | |
290 | struct wm8711_priv *wm8711 = codec->private_data; | |
291 | ||
292 | switch (freq) { | |
293 | case 11289600: | |
294 | case 12000000: | |
295 | case 12288000: | |
296 | case 16934400: | |
297 | case 18432000: | |
298 | wm8711->sysclk = freq; | |
299 | return 0; | |
300 | } | |
301 | return -EINVAL; | |
302 | } | |
303 | ||
304 | static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
305 | unsigned int fmt) | |
306 | { | |
307 | struct snd_soc_codec *codec = codec_dai->codec; | |
308 | u16 iface = 0; | |
309 | ||
310 | /* set master/slave audio interface */ | |
311 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
312 | case SND_SOC_DAIFMT_CBM_CFM: | |
313 | iface |= 0x0040; | |
314 | break; | |
315 | case SND_SOC_DAIFMT_CBS_CFS: | |
316 | break; | |
317 | default: | |
318 | return -EINVAL; | |
319 | } | |
320 | ||
321 | /* interface format */ | |
322 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
323 | case SND_SOC_DAIFMT_I2S: | |
324 | iface |= 0x0002; | |
325 | break; | |
326 | case SND_SOC_DAIFMT_RIGHT_J: | |
327 | break; | |
328 | case SND_SOC_DAIFMT_LEFT_J: | |
329 | iface |= 0x0001; | |
330 | break; | |
331 | case SND_SOC_DAIFMT_DSP_A: | |
332 | iface |= 0x0003; | |
333 | break; | |
334 | case SND_SOC_DAIFMT_DSP_B: | |
335 | iface |= 0x0013; | |
336 | break; | |
337 | default: | |
338 | return -EINVAL; | |
339 | } | |
340 | ||
341 | /* clock inversion */ | |
342 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
343 | case SND_SOC_DAIFMT_NB_NF: | |
344 | break; | |
345 | case SND_SOC_DAIFMT_IB_IF: | |
346 | iface |= 0x0090; | |
347 | break; | |
348 | case SND_SOC_DAIFMT_IB_NF: | |
349 | iface |= 0x0080; | |
350 | break; | |
351 | case SND_SOC_DAIFMT_NB_IF: | |
352 | iface |= 0x0010; | |
353 | break; | |
354 | default: | |
355 | return -EINVAL; | |
356 | } | |
357 | ||
358 | /* set iface */ | |
359 | wm8711_write(codec, WM8711_IFACE, iface); | |
360 | return 0; | |
361 | } | |
362 | ||
363 | ||
364 | static int wm8711_set_bias_level(struct snd_soc_codec *codec, | |
365 | enum snd_soc_bias_level level) | |
366 | { | |
367 | u16 reg = wm8711_read_reg_cache(codec, WM8711_PWR) & 0xff7f; | |
368 | ||
369 | switch (level) { | |
370 | case SND_SOC_BIAS_ON: | |
371 | wm8711_write(codec, WM8711_PWR, reg); | |
372 | break; | |
373 | case SND_SOC_BIAS_PREPARE: | |
374 | break; | |
375 | case SND_SOC_BIAS_STANDBY: | |
376 | wm8711_write(codec, WM8711_PWR, reg | 0x0040); | |
377 | break; | |
378 | case SND_SOC_BIAS_OFF: | |
379 | wm8711_write(codec, WM8711_ACTIVE, 0x0); | |
380 | wm8711_write(codec, WM8711_PWR, 0xffff); | |
381 | break; | |
382 | } | |
383 | codec->bias_level = level; | |
384 | return 0; | |
385 | } | |
386 | ||
387 | #define WM8711_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
388 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
389 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
390 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ | |
391 | SNDRV_PCM_RATE_96000) | |
392 | ||
393 | #define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
394 | SNDRV_PCM_FMTBIT_S24_LE) | |
395 | ||
396 | static struct snd_soc_dai_ops wm8711_ops = { | |
397 | .prepare = wm8711_pcm_prepare, | |
398 | .hw_params = wm8711_hw_params, | |
399 | .shutdown = wm8711_shutdown, | |
400 | .digital_mute = wm8711_mute, | |
401 | .set_sysclk = wm8711_set_dai_sysclk, | |
402 | .set_fmt = wm8711_set_dai_fmt, | |
403 | }; | |
404 | ||
405 | struct snd_soc_dai wm8711_dai = { | |
406 | .name = "WM8711", | |
407 | .playback = { | |
408 | .stream_name = "Playback", | |
409 | .channels_min = 1, | |
410 | .channels_max = 2, | |
411 | .rates = WM8711_RATES, | |
412 | .formats = WM8711_FORMATS,}, | |
413 | .ops = &wm8711_ops, | |
414 | }; | |
415 | EXPORT_SYMBOL_GPL(wm8711_dai); | |
416 | ||
417 | static int wm8711_suspend(struct platform_device *pdev, pm_message_t state) | |
418 | { | |
419 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
420 | struct snd_soc_codec *codec = socdev->card->codec; | |
421 | ||
422 | wm8711_write(codec, WM8711_ACTIVE, 0x0); | |
423 | wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static int wm8711_resume(struct platform_device *pdev) | |
428 | { | |
429 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
430 | struct snd_soc_codec *codec = socdev->card->codec; | |
431 | int i; | |
432 | u8 data[2]; | |
433 | u16 *cache = codec->reg_cache; | |
434 | ||
435 | /* Sync reg_cache with the hardware */ | |
436 | for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) { | |
437 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
438 | data[1] = cache[i] & 0x00ff; | |
439 | codec->hw_write(codec->control_data, data, 2); | |
440 | } | |
441 | wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
442 | wm8711_set_bias_level(codec, codec->suspend_bias_level); | |
443 | return 0; | |
444 | } | |
445 | ||
318b0b8d | 446 | static int wm8711_probe(struct platform_device *pdev) |
bd6d4177 | 447 | { |
318b0b8d MB |
448 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
449 | struct snd_soc_codec *codec; | |
450 | int ret = 0; | |
bd6d4177 | 451 | |
318b0b8d MB |
452 | if (wm8711_codec == NULL) { |
453 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
454 | return -ENODEV; | |
455 | } | |
bd6d4177 | 456 | |
318b0b8d MB |
457 | socdev->card->codec = wm8711_codec; |
458 | codec = wm8711_codec; | |
bd6d4177 MA |
459 | |
460 | /* register pcms */ | |
461 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
462 | if (ret < 0) { | |
318b0b8d | 463 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
bd6d4177 MA |
464 | goto pcm_err; |
465 | } | |
466 | ||
318b0b8d MB |
467 | snd_soc_add_controls(codec, wm8711_snd_controls, |
468 | ARRAY_SIZE(wm8711_snd_controls)); | |
bd6d4177 MA |
469 | wm8711_add_widgets(codec); |
470 | ret = snd_soc_init_card(socdev); | |
471 | if (ret < 0) { | |
318b0b8d | 472 | dev_err(codec->dev, "failed to register card: %d\n", ret); |
bd6d4177 MA |
473 | goto card_err; |
474 | } | |
318b0b8d | 475 | |
bd6d4177 MA |
476 | return ret; |
477 | ||
478 | card_err: | |
479 | snd_soc_free_pcms(socdev); | |
480 | snd_soc_dapm_free(socdev); | |
481 | pcm_err: | |
bd6d4177 MA |
482 | return ret; |
483 | } | |
484 | ||
318b0b8d MB |
485 | /* power down chip */ |
486 | static int wm8711_remove(struct platform_device *pdev) | |
487 | { | |
488 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
bd6d4177 | 489 | |
318b0b8d MB |
490 | snd_soc_free_pcms(socdev); |
491 | snd_soc_dapm_free(socdev); | |
bd6d4177 | 492 | |
318b0b8d MB |
493 | return 0; |
494 | } | |
bd6d4177 | 495 | |
318b0b8d MB |
496 | struct snd_soc_codec_device soc_codec_dev_wm8711 = { |
497 | .probe = wm8711_probe, | |
498 | .remove = wm8711_remove, | |
499 | .suspend = wm8711_suspend, | |
500 | .resume = wm8711_resume, | |
501 | }; | |
502 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711); | |
bd6d4177 | 503 | |
318b0b8d | 504 | static int wm8711_register(struct wm8711_priv *wm8711) |
bd6d4177 | 505 | { |
bd6d4177 | 506 | int ret; |
318b0b8d MB |
507 | struct snd_soc_codec *codec = &wm8711->codec; |
508 | u16 reg; | |
bd6d4177 | 509 | |
318b0b8d MB |
510 | if (wm8711_codec) { |
511 | dev_err(codec->dev, "Another WM8711 is registered\n"); | |
512 | return -EINVAL; | |
bd6d4177 MA |
513 | } |
514 | ||
318b0b8d MB |
515 | mutex_init(&codec->mutex); |
516 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
517 | INIT_LIST_HEAD(&codec->dapm_paths); | |
bd6d4177 | 518 | |
318b0b8d MB |
519 | codec->private_data = wm8711; |
520 | codec->name = "WM8711"; | |
521 | codec->owner = THIS_MODULE; | |
522 | codec->read = wm8711_read_reg_cache; | |
523 | codec->write = wm8711_write; | |
524 | codec->bias_level = SND_SOC_BIAS_OFF; | |
525 | codec->set_bias_level = wm8711_set_bias_level; | |
526 | codec->dai = &wm8711_dai; | |
527 | codec->num_dai = 1; | |
528 | codec->reg_cache_size = WM8711_CACHEREGNUM; | |
529 | codec->reg_cache = &wm8711->reg_cache; | |
bd6d4177 | 530 | |
318b0b8d | 531 | memcpy(codec->reg_cache, wm8711_reg, sizeof(wm8711_reg)); |
bd6d4177 | 532 | |
318b0b8d | 533 | ret = wm8711_reset(codec); |
bd6d4177 | 534 | if (ret < 0) { |
318b0b8d MB |
535 | dev_err(codec->dev, "Failed to issue reset\n"); |
536 | return ret; | |
bd6d4177 | 537 | } |
bd6d4177 | 538 | |
318b0b8d | 539 | wm8711_dai.dev = codec->dev; |
bd6d4177 | 540 | |
318b0b8d MB |
541 | wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
542 | ||
543 | /* Latch the update bits */ | |
544 | reg = wm8711_read_reg_cache(codec, WM8711_LOUT1V); | |
545 | wm8711_write(codec, WM8711_LOUT1V, reg | 0x0100); | |
546 | reg = wm8711_read_reg_cache(codec, WM8711_ROUT1V); | |
547 | wm8711_write(codec, WM8711_ROUT1V, reg | 0x0100); | |
548 | ||
549 | wm8711_codec = codec; | |
550 | ||
551 | ret = snd_soc_register_codec(codec); | |
552 | if (ret != 0) { | |
553 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
554 | return ret; | |
555 | } | |
556 | ||
557 | ret = snd_soc_register_dai(&wm8711_dai); | |
558 | if (ret != 0) { | |
559 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
560 | snd_soc_unregister_codec(codec); | |
561 | return ret; | |
562 | } | |
bd6d4177 | 563 | |
bd6d4177 MA |
564 | return 0; |
565 | } | |
566 | ||
318b0b8d | 567 | static void wm8711_unregister(struct wm8711_priv *wm8711) |
bd6d4177 | 568 | { |
318b0b8d MB |
569 | wm8711_set_bias_level(&wm8711->codec, SND_SOC_BIAS_OFF); |
570 | snd_soc_unregister_dai(&wm8711_dai); | |
571 | snd_soc_unregister_codec(&wm8711->codec); | |
572 | kfree(wm8711); | |
573 | wm8711_codec = NULL; | |
bd6d4177 MA |
574 | } |
575 | ||
318b0b8d MB |
576 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
577 | static __devinit int wm8711_i2c_probe(struct i2c_client *i2c, | |
578 | const struct i2c_device_id *id) | |
bd6d4177 | 579 | { |
bd6d4177 | 580 | struct wm8711_priv *wm8711; |
318b0b8d | 581 | struct snd_soc_codec *codec; |
bd6d4177 MA |
582 | |
583 | wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL); | |
318b0b8d | 584 | if (wm8711 == NULL) |
bd6d4177 | 585 | return -ENOMEM; |
bd6d4177 | 586 | |
318b0b8d MB |
587 | codec = &wm8711->codec; |
588 | codec->hw_write = (hw_write_t)i2c_master_send; | |
bd6d4177 | 589 | |
318b0b8d MB |
590 | i2c_set_clientdata(i2c, wm8711); |
591 | codec->control_data = i2c; | |
bd6d4177 | 592 | |
318b0b8d | 593 | codec->dev = &i2c->dev; |
bd6d4177 | 594 | |
318b0b8d MB |
595 | return wm8711_register(wm8711); |
596 | } | |
bd6d4177 | 597 | |
318b0b8d MB |
598 | static __devexit int wm8711_i2c_remove(struct i2c_client *client) |
599 | { | |
600 | struct wm8711_priv *wm8711 = i2c_get_clientdata(client); | |
601 | wm8711_unregister(wm8711); | |
bd6d4177 MA |
602 | return 0; |
603 | } | |
604 | ||
318b0b8d MB |
605 | static const struct i2c_device_id wm8711_i2c_id[] = { |
606 | { "wm8711", 0 }, | |
607 | { } | |
bd6d4177 | 608 | }; |
318b0b8d MB |
609 | MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id); |
610 | ||
611 | static struct i2c_driver wm8711_i2c_driver = { | |
612 | .driver = { | |
613 | .name = "WM8711 I2C Codec", | |
614 | .owner = THIS_MODULE, | |
615 | }, | |
616 | .probe = wm8711_i2c_probe, | |
617 | .remove = __devexit_p(wm8711_i2c_remove), | |
618 | .id_table = wm8711_i2c_id, | |
619 | }; | |
620 | #endif | |
bd6d4177 MA |
621 | |
622 | static int __init wm8711_modinit(void) | |
623 | { | |
318b0b8d MB |
624 | int ret; |
625 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
626 | ret = i2c_add_driver(&wm8711_i2c_driver); | |
627 | if (ret != 0) { | |
628 | printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n", | |
629 | ret); | |
630 | } | |
631 | #endif | |
632 | return 0; | |
bd6d4177 MA |
633 | } |
634 | module_init(wm8711_modinit); | |
635 | ||
636 | static void __exit wm8711_exit(void) | |
637 | { | |
318b0b8d MB |
638 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
639 | i2c_del_driver(&wm8711_i2c_driver); | |
640 | #endif | |
bd6d4177 MA |
641 | } |
642 | module_exit(wm8711_exit); | |
643 | ||
644 | MODULE_DESCRIPTION("ASoC WM8711 driver"); | |
645 | MODULE_AUTHOR("Mike Arthur"); | |
646 | MODULE_LICENSE("GPL"); |