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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 | ||
31 | #define AUDIO_NAME "wm8711" | |
32 | #define WM8711_VERSION "0.3" | |
33 | ||
34 | /* codec private data */ | |
35 | struct wm8711_priv { | |
36 | unsigned int sysclk; | |
37 | }; | |
38 | ||
39 | /* | |
40 | * wm8711 register cache | |
41 | * We can't read the WM8711 register space when we are | |
42 | * using 2 wire for device control, so we cache them instead. | |
43 | * There is no point in caching the reset register | |
44 | */ | |
45 | static const u16 wm8711_reg[WM8711_CACHEREGNUM] = { | |
46 | 0x0079, 0x0079, 0x000a, 0x0008, | |
47 | 0x009f, 0x000a, 0x0000, 0x0000 | |
48 | }; | |
49 | ||
50 | /* | |
51 | * read wm8711 register cache | |
52 | */ | |
53 | static inline unsigned int wm8711_read_reg_cache(struct snd_soc_codec *codec, | |
54 | unsigned int reg) | |
55 | { | |
56 | u16 *cache = codec->reg_cache; | |
57 | if (reg == WM8711_RESET) | |
58 | return 0; | |
59 | if (reg >= WM8711_CACHEREGNUM) | |
60 | return -1; | |
61 | return cache[reg]; | |
62 | } | |
63 | ||
64 | /* | |
65 | * write wm8711 register cache | |
66 | */ | |
67 | static inline void wm8711_write_reg_cache(struct snd_soc_codec *codec, | |
68 | u16 reg, unsigned int value) | |
69 | { | |
70 | u16 *cache = codec->reg_cache; | |
71 | if (reg >= WM8711_CACHEREGNUM) | |
72 | return; | |
73 | cache[reg] = value; | |
74 | } | |
75 | ||
76 | /* | |
77 | * write to the WM8711 register space | |
78 | */ | |
79 | static int wm8711_write(struct snd_soc_codec *codec, unsigned int reg, | |
80 | unsigned int value) | |
81 | { | |
82 | u8 data[2]; | |
83 | ||
84 | /* data is | |
85 | * D15..D9 WM8753 register offset | |
86 | * D8...D0 register data | |
87 | */ | |
88 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); | |
89 | data[1] = value & 0x00ff; | |
90 | ||
91 | wm8711_write_reg_cache(codec, reg, value); | |
92 | if (codec->hw_write(codec->control_data, data, 2) == 2) | |
93 | return 0; | |
94 | else | |
95 | return -EIO; | |
96 | } | |
97 | ||
98 | #define wm8711_reset(c) wm8711_write(c, WM8711_RESET, 0) | |
99 | ||
100 | static const struct snd_kcontrol_new wm8711_snd_controls[] = { | |
101 | ||
102 | SOC_DOUBLE_R("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V, | |
103 | 0, 127, 0), | |
104 | SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V, | |
105 | 7, 1, 0), | |
106 | ||
107 | }; | |
108 | ||
109 | /* add non dapm controls */ | |
110 | static int wm8711_add_controls(struct snd_soc_codec *codec) | |
111 | { | |
112 | int err, i; | |
113 | ||
114 | for (i = 0; i < ARRAY_SIZE(wm8711_snd_controls); i++) { | |
115 | err = snd_ctl_add(codec->card, | |
116 | snd_soc_cnew(&wm8711_snd_controls[i], codec, | |
117 | NULL)); | |
118 | if (err < 0) | |
119 | return err; | |
120 | } | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | /* Output Mixer */ | |
126 | static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = { | |
127 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0), | |
128 | SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0), | |
129 | }; | |
130 | ||
131 | static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = { | |
132 | SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1, | |
133 | &wm8711_output_mixer_controls[0], | |
134 | ARRAY_SIZE(wm8711_output_mixer_controls)), | |
135 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1), | |
136 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
137 | SND_SOC_DAPM_OUTPUT("LHPOUT"), | |
138 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
139 | SND_SOC_DAPM_OUTPUT("RHPOUT"), | |
140 | }; | |
141 | ||
142 | static const struct snd_soc_dapm_route intercon[] = { | |
143 | /* output mixer */ | |
144 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, | |
145 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, | |
146 | ||
147 | /* outputs */ | |
148 | {"RHPOUT", NULL, "Output Mixer"}, | |
149 | {"ROUT", NULL, "Output Mixer"}, | |
150 | {"LHPOUT", NULL, "Output Mixer"}, | |
151 | {"LOUT", NULL, "Output Mixer"}, | |
152 | }; | |
153 | ||
154 | static int wm8711_add_widgets(struct snd_soc_codec *codec) | |
155 | { | |
156 | snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets, | |
157 | ARRAY_SIZE(wm8711_dapm_widgets)); | |
158 | ||
159 | snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); | |
160 | ||
161 | snd_soc_dapm_new_widgets(codec); | |
162 | return 0; | |
163 | } | |
164 | ||
165 | struct _coeff_div { | |
166 | u32 mclk; | |
167 | u32 rate; | |
168 | u16 fs; | |
169 | u8 sr:4; | |
170 | u8 bosr:1; | |
171 | u8 usb:1; | |
172 | }; | |
173 | ||
174 | /* codec mclk clock divider coefficients */ | |
175 | static const struct _coeff_div coeff_div[] = { | |
176 | /* 48k */ | |
177 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, | |
178 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, | |
179 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, | |
180 | ||
181 | /* 32k */ | |
182 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, | |
183 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, | |
184 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, | |
185 | ||
186 | /* 8k */ | |
187 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, | |
188 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, | |
189 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, | |
190 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, | |
191 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, | |
192 | ||
193 | /* 96k */ | |
194 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, | |
195 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, | |
196 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, | |
197 | ||
198 | /* 44.1k */ | |
199 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, | |
200 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, | |
201 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, | |
202 | ||
203 | /* 88.2k */ | |
204 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, | |
205 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, | |
206 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, | |
207 | }; | |
208 | ||
209 | static inline int get_coeff(int mclk, int rate) | |
210 | { | |
211 | int i; | |
212 | ||
213 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
214 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
215 | return i; | |
216 | } | |
217 | return 0; | |
218 | } | |
219 | ||
220 | static int wm8711_hw_params(struct snd_pcm_substream *substream, | |
221 | struct snd_pcm_hw_params *params, | |
222 | struct snd_soc_dai *dai) | |
223 | { | |
224 | struct snd_soc_codec *codec = dai->codec; | |
225 | struct wm8711_priv *wm8711 = codec->private_data; | |
226 | u16 iface = wm8711_read_reg_cache(codec, WM8711_IFACE) & 0xfffc; | |
227 | int i = get_coeff(wm8711->sysclk, params_rate(params)); | |
228 | u16 srate = (coeff_div[i].sr << 2) | | |
229 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; | |
230 | ||
231 | wm8711_write(codec, WM8711_SRATE, srate); | |
232 | ||
233 | /* bit size */ | |
234 | switch (params_format(params)) { | |
235 | case SNDRV_PCM_FORMAT_S16_LE: | |
236 | break; | |
237 | case SNDRV_PCM_FORMAT_S20_3LE: | |
238 | iface |= 0x0004; | |
239 | break; | |
240 | case SNDRV_PCM_FORMAT_S24_LE: | |
241 | iface |= 0x0008; | |
242 | break; | |
243 | } | |
244 | ||
245 | wm8711_write(codec, WM8711_IFACE, iface); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | static int wm8711_pcm_prepare(struct snd_pcm_substream *substream, | |
250 | struct snd_soc_dai *dai) | |
251 | { | |
252 | struct snd_soc_codec *codec = dai->codec; | |
253 | ||
254 | /* set active */ | |
255 | wm8711_write(codec, WM8711_ACTIVE, 0x0001); | |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
260 | static void wm8711_shutdown(struct snd_pcm_substream *substream, | |
261 | struct snd_soc_dai *dai) | |
262 | { | |
263 | struct snd_soc_codec *codec = dai->codec; | |
264 | ||
265 | /* deactivate */ | |
266 | if (!codec->active) { | |
267 | udelay(50); | |
268 | wm8711_write(codec, WM8711_ACTIVE, 0x0); | |
269 | } | |
270 | } | |
271 | ||
272 | static int wm8711_mute(struct snd_soc_dai *dai, int mute) | |
273 | { | |
274 | struct snd_soc_codec *codec = dai->codec; | |
275 | u16 mute_reg = wm8711_read_reg_cache(codec, WM8711_APDIGI) & 0xfff7; | |
276 | ||
277 | if (mute) | |
278 | wm8711_write(codec, WM8711_APDIGI, mute_reg | 0x8); | |
279 | else | |
280 | wm8711_write(codec, WM8711_APDIGI, mute_reg); | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
285 | static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
286 | int clk_id, unsigned int freq, int dir) | |
287 | { | |
288 | struct snd_soc_codec *codec = codec_dai->codec; | |
289 | struct wm8711_priv *wm8711 = codec->private_data; | |
290 | ||
291 | switch (freq) { | |
292 | case 11289600: | |
293 | case 12000000: | |
294 | case 12288000: | |
295 | case 16934400: | |
296 | case 18432000: | |
297 | wm8711->sysclk = freq; | |
298 | return 0; | |
299 | } | |
300 | return -EINVAL; | |
301 | } | |
302 | ||
303 | static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
304 | unsigned int fmt) | |
305 | { | |
306 | struct snd_soc_codec *codec = codec_dai->codec; | |
307 | u16 iface = 0; | |
308 | ||
309 | /* set master/slave audio interface */ | |
310 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
311 | case SND_SOC_DAIFMT_CBM_CFM: | |
312 | iface |= 0x0040; | |
313 | break; | |
314 | case SND_SOC_DAIFMT_CBS_CFS: | |
315 | break; | |
316 | default: | |
317 | return -EINVAL; | |
318 | } | |
319 | ||
320 | /* interface format */ | |
321 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
322 | case SND_SOC_DAIFMT_I2S: | |
323 | iface |= 0x0002; | |
324 | break; | |
325 | case SND_SOC_DAIFMT_RIGHT_J: | |
326 | break; | |
327 | case SND_SOC_DAIFMT_LEFT_J: | |
328 | iface |= 0x0001; | |
329 | break; | |
330 | case SND_SOC_DAIFMT_DSP_A: | |
331 | iface |= 0x0003; | |
332 | break; | |
333 | case SND_SOC_DAIFMT_DSP_B: | |
334 | iface |= 0x0013; | |
335 | break; | |
336 | default: | |
337 | return -EINVAL; | |
338 | } | |
339 | ||
340 | /* clock inversion */ | |
341 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
342 | case SND_SOC_DAIFMT_NB_NF: | |
343 | break; | |
344 | case SND_SOC_DAIFMT_IB_IF: | |
345 | iface |= 0x0090; | |
346 | break; | |
347 | case SND_SOC_DAIFMT_IB_NF: | |
348 | iface |= 0x0080; | |
349 | break; | |
350 | case SND_SOC_DAIFMT_NB_IF: | |
351 | iface |= 0x0010; | |
352 | break; | |
353 | default: | |
354 | return -EINVAL; | |
355 | } | |
356 | ||
357 | /* set iface */ | |
358 | wm8711_write(codec, WM8711_IFACE, iface); | |
359 | return 0; | |
360 | } | |
361 | ||
362 | ||
363 | static int wm8711_set_bias_level(struct snd_soc_codec *codec, | |
364 | enum snd_soc_bias_level level) | |
365 | { | |
366 | u16 reg = wm8711_read_reg_cache(codec, WM8711_PWR) & 0xff7f; | |
367 | ||
368 | switch (level) { | |
369 | case SND_SOC_BIAS_ON: | |
370 | wm8711_write(codec, WM8711_PWR, reg); | |
371 | break; | |
372 | case SND_SOC_BIAS_PREPARE: | |
373 | break; | |
374 | case SND_SOC_BIAS_STANDBY: | |
375 | wm8711_write(codec, WM8711_PWR, reg | 0x0040); | |
376 | break; | |
377 | case SND_SOC_BIAS_OFF: | |
378 | wm8711_write(codec, WM8711_ACTIVE, 0x0); | |
379 | wm8711_write(codec, WM8711_PWR, 0xffff); | |
380 | break; | |
381 | } | |
382 | codec->bias_level = level; | |
383 | return 0; | |
384 | } | |
385 | ||
386 | #define WM8711_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
387 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
388 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
389 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ | |
390 | SNDRV_PCM_RATE_96000) | |
391 | ||
392 | #define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
393 | SNDRV_PCM_FMTBIT_S24_LE) | |
394 | ||
395 | static struct snd_soc_dai_ops wm8711_ops = { | |
396 | .prepare = wm8711_pcm_prepare, | |
397 | .hw_params = wm8711_hw_params, | |
398 | .shutdown = wm8711_shutdown, | |
399 | .digital_mute = wm8711_mute, | |
400 | .set_sysclk = wm8711_set_dai_sysclk, | |
401 | .set_fmt = wm8711_set_dai_fmt, | |
402 | }; | |
403 | ||
404 | struct snd_soc_dai wm8711_dai = { | |
405 | .name = "WM8711", | |
406 | .playback = { | |
407 | .stream_name = "Playback", | |
408 | .channels_min = 1, | |
409 | .channels_max = 2, | |
410 | .rates = WM8711_RATES, | |
411 | .formats = WM8711_FORMATS,}, | |
412 | .ops = &wm8711_ops, | |
413 | }; | |
414 | EXPORT_SYMBOL_GPL(wm8711_dai); | |
415 | ||
416 | static int wm8711_suspend(struct platform_device *pdev, pm_message_t state) | |
417 | { | |
418 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
419 | struct snd_soc_codec *codec = socdev->card->codec; | |
420 | ||
421 | wm8711_write(codec, WM8711_ACTIVE, 0x0); | |
422 | wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
423 | return 0; | |
424 | } | |
425 | ||
426 | static int wm8711_resume(struct platform_device *pdev) | |
427 | { | |
428 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
429 | struct snd_soc_codec *codec = socdev->card->codec; | |
430 | int i; | |
431 | u8 data[2]; | |
432 | u16 *cache = codec->reg_cache; | |
433 | ||
434 | /* Sync reg_cache with the hardware */ | |
435 | for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) { | |
436 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
437 | data[1] = cache[i] & 0x00ff; | |
438 | codec->hw_write(codec->control_data, data, 2); | |
439 | } | |
440 | wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
441 | wm8711_set_bias_level(codec, codec->suspend_bias_level); | |
442 | return 0; | |
443 | } | |
444 | ||
445 | /* | |
446 | * initialise the WM8711 driver | |
447 | * register the mixer and dsp interfaces with the kernel | |
448 | */ | |
449 | static int wm8711_init(struct snd_soc_device *socdev) | |
450 | { | |
451 | struct snd_soc_codec *codec = socdev->card->codec; | |
452 | int reg, ret = 0; | |
453 | ||
454 | codec->name = "WM8711"; | |
455 | codec->owner = THIS_MODULE; | |
456 | codec->read = wm8711_read_reg_cache; | |
457 | codec->write = wm8711_write; | |
458 | codec->set_bias_level = wm8711_set_bias_level; | |
459 | codec->dai = &wm8711_dai; | |
460 | codec->num_dai = 1; | |
461 | codec->reg_cache_size = ARRAY_SIZE(wm8711_reg); | |
462 | codec->reg_cache = kmemdup(wm8711_reg, sizeof(wm8711_reg), GFP_KERNEL); | |
463 | ||
464 | if (codec->reg_cache == NULL) | |
465 | return -ENOMEM; | |
466 | ||
467 | wm8711_reset(codec); | |
468 | ||
469 | /* register pcms */ | |
470 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
471 | if (ret < 0) { | |
472 | printk(KERN_ERR "wm8711: failed to create pcms\n"); | |
473 | goto pcm_err; | |
474 | } | |
475 | ||
476 | /* power on device */ | |
477 | wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
478 | ||
479 | /* set the update bits */ | |
480 | reg = wm8711_read_reg_cache(codec, WM8711_LOUT1V); | |
481 | wm8711_write(codec, WM8711_LOUT1V, reg | 0x0100); | |
482 | reg = wm8711_read_reg_cache(codec, WM8711_ROUT1V); | |
483 | wm8711_write(codec, WM8711_ROUT1V, reg | 0x0100); | |
484 | ||
485 | wm8711_add_controls(codec); | |
486 | wm8711_add_widgets(codec); | |
487 | ret = snd_soc_init_card(socdev); | |
488 | if (ret < 0) { | |
489 | printk(KERN_ERR "wm8711: failed to register card\n"); | |
490 | goto card_err; | |
491 | } | |
492 | return ret; | |
493 | ||
494 | card_err: | |
495 | snd_soc_free_pcms(socdev); | |
496 | snd_soc_dapm_free(socdev); | |
497 | pcm_err: | |
498 | kfree(codec->reg_cache); | |
499 | return ret; | |
500 | } | |
501 | ||
502 | static struct snd_soc_device *wm8711_socdev; | |
503 | ||
504 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
505 | ||
506 | /* | |
507 | * WM8711 2 wire address is determined by GPIO5 | |
508 | * state during powerup. | |
509 | * low = 0x1a | |
510 | * high = 0x1b | |
511 | */ | |
512 | #define I2C_DRIVERID_WM8711 0xfefe /* liam - need a proper id */ | |
513 | ||
514 | static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END }; | |
515 | ||
516 | /* Magic definition of all other variables and things */ | |
517 | I2C_CLIENT_INSMOD; | |
518 | ||
519 | static struct i2c_driver wm8711_i2c_driver; | |
520 | static struct i2c_client client_template; | |
521 | ||
522 | /* If the i2c layer weren't so broken, we could pass this kind of data | |
523 | around */ | |
524 | ||
525 | static int wm8711_codec_probe(struct i2c_adapter *adap, int addr, int kind) | |
526 | { | |
527 | struct snd_soc_device *socdev = wm8711_socdev; | |
528 | struct wm8711_setup_data *setup = socdev->codec_data; | |
529 | struct snd_soc_codec *codec = socdev->card->codec; | |
530 | struct i2c_client *i2c; | |
531 | int ret; | |
532 | ||
533 | if (addr != setup->i2c_address) | |
534 | return -ENODEV; | |
535 | ||
536 | client_template.adapter = adap; | |
537 | client_template.addr = addr; | |
538 | ||
539 | i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL); | |
540 | if (i2c == NULL) { | |
541 | kfree(codec); | |
542 | return -ENOMEM; | |
543 | } | |
544 | ||
545 | i2c_set_clientdata(i2c, codec); | |
546 | ||
547 | codec->control_data = i2c; | |
548 | ||
549 | ret = i2c_attach_client(i2c); | |
550 | if (ret < 0) { | |
551 | pr_err("failed to attach codec at addr %x\n", addr); | |
552 | goto err; | |
553 | } | |
554 | ||
555 | ret = wm8711_init(socdev); | |
556 | if (ret < 0) { | |
557 | pr_err("failed to initialise WM8711\n"); | |
558 | goto err; | |
559 | } | |
560 | return ret; | |
561 | ||
562 | err: | |
563 | kfree(codec); | |
564 | kfree(i2c); | |
565 | return ret; | |
566 | } | |
567 | ||
568 | static int wm8711_i2c_detach(struct i2c_client *client) | |
569 | { | |
570 | struct snd_soc_codec *codec = i2c_get_clientdata(client); | |
571 | ||
572 | i2c_detach_client(client); | |
573 | kfree(codec->reg_cache); | |
574 | kfree(client); | |
575 | return 0; | |
576 | } | |
577 | ||
578 | static int wm8711_i2c_attach(struct i2c_adapter *adap) | |
579 | { | |
580 | return i2c_probe(adap, &addr_data, wm8711_codec_probe); | |
581 | } | |
582 | ||
583 | /* corgi i2c codec control layer */ | |
584 | static struct i2c_driver wm8711_i2c_driver = { | |
585 | .driver = { | |
586 | .name = "WM8711 I2C Codec", | |
587 | .owner = THIS_MODULE, | |
588 | }, | |
589 | .id = I2C_DRIVERID_WM8711, | |
590 | .attach_adapter = wm8711_i2c_attach, | |
591 | .detach_client = wm8711_i2c_detach, | |
592 | .command = NULL, | |
593 | }; | |
594 | ||
595 | static struct i2c_client client_template = { | |
596 | .name = "WM8711", | |
597 | .driver = &wm8711_i2c_driver, | |
598 | }; | |
599 | #endif | |
600 | ||
601 | static int wm8711_probe(struct platform_device *pdev) | |
602 | { | |
603 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
604 | struct wm8711_setup_data *setup; | |
605 | struct snd_soc_codec *codec; | |
606 | struct wm8711_priv *wm8711; | |
607 | int ret = 0; | |
608 | ||
609 | pr_info("WM8711 Audio Codec %s", WM8711_VERSION); | |
610 | ||
611 | setup = socdev->codec_data; | |
612 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
613 | if (codec == NULL) | |
614 | return -ENOMEM; | |
615 | ||
616 | wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL); | |
617 | if (wm8711 == NULL) { | |
618 | kfree(codec); | |
619 | return -ENOMEM; | |
620 | } | |
621 | ||
622 | codec->private_data = wm8711; | |
623 | socdev->card->codec = codec; | |
624 | mutex_init(&codec->mutex); | |
625 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
626 | INIT_LIST_HEAD(&codec->dapm_paths); | |
627 | ||
628 | wm8711_socdev = socdev; | |
629 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
630 | if (setup->i2c_address) { | |
631 | normal_i2c[0] = setup->i2c_address; | |
632 | codec->hw_write = (hw_write_t)i2c_master_send; | |
633 | ret = i2c_add_driver(&wm8711_i2c_driver); | |
634 | if (ret != 0) | |
635 | printk(KERN_ERR "can't add i2c driver"); | |
636 | } | |
637 | #else | |
638 | /* Add other interfaces here */ | |
639 | #endif | |
640 | return ret; | |
641 | } | |
642 | ||
643 | /* power down chip */ | |
644 | static int wm8711_remove(struct platform_device *pdev) | |
645 | { | |
646 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
647 | struct snd_soc_codec *codec = socdev->card->codec; | |
648 | ||
649 | if (codec->control_data) | |
650 | wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
651 | ||
652 | snd_soc_free_pcms(socdev); | |
653 | snd_soc_dapm_free(socdev); | |
654 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
655 | i2c_del_driver(&wm8711_i2c_driver); | |
656 | #endif | |
657 | kfree(codec->private_data); | |
658 | kfree(codec); | |
659 | ||
660 | return 0; | |
661 | } | |
662 | ||
663 | struct snd_soc_codec_device soc_codec_dev_wm8711 = { | |
664 | .probe = wm8711_probe, | |
665 | .remove = wm8711_remove, | |
666 | .suspend = wm8711_suspend, | |
667 | .resume = wm8711_resume, | |
668 | }; | |
669 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711); | |
670 | ||
671 | static int __init wm8711_modinit(void) | |
672 | { | |
673 | return snd_soc_register_dai(&wm8711_dai); | |
674 | } | |
675 | module_init(wm8711_modinit); | |
676 | ||
677 | static void __exit wm8711_exit(void) | |
678 | { | |
679 | snd_soc_unregister_dai(&wm8711_dai); | |
680 | } | |
681 | module_exit(wm8711_exit); | |
682 | ||
683 | MODULE_DESCRIPTION("ASoC WM8711 driver"); | |
684 | MODULE_AUTHOR("Mike Arthur"); | |
685 | MODULE_LICENSE("GPL"); |