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924914ee MB |
1 | /* |
2 | * wm8776.c -- WM8776 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2009 Wolfson Microelectronics plc | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * TODO: Input ALC/limiter support | |
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 <linux/spi/spi.h> | |
5a0e3ad6 | 23 | #include <linux/slab.h> |
924914ee MB |
24 | #include <sound/core.h> |
25 | #include <sound/pcm.h> | |
26 | #include <sound/pcm_params.h> | |
27 | #include <sound/soc.h> | |
28 | #include <sound/soc-dapm.h> | |
29 | #include <sound/initval.h> | |
30 | #include <sound/tlv.h> | |
31 | ||
32 | #include "wm8776.h" | |
33 | ||
34 | static struct snd_soc_codec *wm8776_codec; | |
35 | struct snd_soc_codec_device soc_codec_dev_wm8776; | |
36 | ||
37 | /* codec private data */ | |
38 | struct wm8776_priv { | |
39 | struct snd_soc_codec codec; | |
40 | u16 reg_cache[WM8776_CACHEREGNUM]; | |
41 | int sysclk[2]; | |
42 | }; | |
43 | ||
44 | #ifdef CONFIG_SPI_MASTER | |
45 | static int wm8776_spi_write(struct spi_device *spi, const char *data, int len); | |
46 | #endif | |
47 | ||
48 | static const u16 wm8776_reg[WM8776_CACHEREGNUM] = { | |
49 | 0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */ | |
50 | 0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */ | |
51 | 0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */ | |
52 | 0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */ | |
53 | 0xa6, 0x01, 0x01 | |
54 | }; | |
55 | ||
924914ee MB |
56 | static int wm8776_reset(struct snd_soc_codec *codec) |
57 | { | |
35b1207b | 58 | return snd_soc_write(codec, WM8776_RESET, 0); |
924914ee MB |
59 | } |
60 | ||
61 | static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1); | |
62 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); | |
63 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1); | |
64 | ||
65 | static const struct snd_kcontrol_new wm8776_snd_controls[] = { | |
66 | SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL, | |
67 | 0, 127, 0, hp_tlv), | |
68 | SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL, | |
69 | 0, 255, 0, dac_tlv), | |
70 | SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0), | |
71 | ||
72 | SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0), | |
73 | ||
74 | SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL, | |
75 | 0, 255, 0, adc_tlv), | |
76 | SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1), | |
77 | SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0), | |
78 | SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1), | |
79 | }; | |
80 | ||
81 | static const struct snd_kcontrol_new inmix_controls[] = { | |
82 | SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0), | |
83 | SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0), | |
84 | SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0), | |
85 | SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0), | |
86 | SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0), | |
87 | }; | |
88 | ||
89 | static const struct snd_kcontrol_new outmix_controls[] = { | |
90 | SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0), | |
91 | SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0), | |
92 | SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0), | |
93 | }; | |
94 | ||
95 | static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = { | |
96 | SND_SOC_DAPM_INPUT("AUX"), | |
97 | SND_SOC_DAPM_INPUT("AUX"), | |
98 | ||
99 | SND_SOC_DAPM_INPUT("AIN1"), | |
100 | SND_SOC_DAPM_INPUT("AIN2"), | |
101 | SND_SOC_DAPM_INPUT("AIN3"), | |
102 | SND_SOC_DAPM_INPUT("AIN4"), | |
103 | SND_SOC_DAPM_INPUT("AIN5"), | |
104 | ||
105 | SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1, | |
106 | inmix_controls, ARRAY_SIZE(inmix_controls)), | |
107 | ||
108 | SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1), | |
109 | SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1), | |
110 | ||
111 | SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, | |
112 | outmix_controls, ARRAY_SIZE(outmix_controls)), | |
113 | ||
114 | SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0), | |
115 | ||
116 | SND_SOC_DAPM_OUTPUT("VOUT"), | |
117 | ||
118 | SND_SOC_DAPM_OUTPUT("HPOUTL"), | |
119 | SND_SOC_DAPM_OUTPUT("HPOUTR"), | |
120 | }; | |
121 | ||
122 | static const struct snd_soc_dapm_route routes[] = { | |
123 | { "Input Mixer", "AIN1 Switch", "AIN1" }, | |
124 | { "Input Mixer", "AIN2 Switch", "AIN2" }, | |
125 | { "Input Mixer", "AIN3 Switch", "AIN3" }, | |
126 | { "Input Mixer", "AIN4 Switch", "AIN4" }, | |
127 | { "Input Mixer", "AIN5 Switch", "AIN5" }, | |
128 | ||
129 | { "ADC", NULL, "Input Mixer" }, | |
130 | ||
131 | { "Output Mixer", "DAC Switch", "DAC" }, | |
132 | { "Output Mixer", "AUX Switch", "AUX" }, | |
133 | { "Output Mixer", "Bypass Switch", "Input Mixer" }, | |
134 | ||
135 | { "VOUT", NULL, "Output Mixer" }, | |
136 | ||
137 | { "Headphone PGA", NULL, "Output Mixer" }, | |
138 | ||
139 | { "HPOUTL", NULL, "Headphone PGA" }, | |
140 | { "HPOUTR", NULL, "Headphone PGA" }, | |
141 | }; | |
142 | ||
143 | static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
144 | { | |
145 | struct snd_soc_codec *codec = dai->codec; | |
146 | int reg, iface, master; | |
147 | ||
148 | switch (dai->id) { | |
149 | case WM8776_DAI_DAC: | |
150 | reg = WM8776_DACIFCTRL; | |
151 | master = 0x80; | |
152 | break; | |
153 | case WM8776_DAI_ADC: | |
154 | reg = WM8776_ADCIFCTRL; | |
155 | master = 0x100; | |
156 | break; | |
157 | default: | |
158 | return -EINVAL; | |
159 | } | |
160 | ||
161 | iface = 0; | |
162 | ||
163 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
164 | case SND_SOC_DAIFMT_CBM_CFM: | |
165 | break; | |
166 | case SND_SOC_DAIFMT_CBS_CFS: | |
167 | master = 0; | |
168 | break; | |
169 | default: | |
170 | return -EINVAL; | |
171 | } | |
172 | ||
173 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
174 | case SND_SOC_DAIFMT_I2S: | |
175 | iface |= 0x0002; | |
176 | break; | |
177 | case SND_SOC_DAIFMT_RIGHT_J: | |
178 | break; | |
179 | case SND_SOC_DAIFMT_LEFT_J: | |
180 | iface |= 0x0001; | |
181 | break; | |
182 | /* FIXME: CHECK A/B */ | |
183 | case SND_SOC_DAIFMT_DSP_A: | |
184 | iface |= 0x0003; | |
185 | break; | |
186 | case SND_SOC_DAIFMT_DSP_B: | |
187 | iface |= 0x0007; | |
188 | break; | |
189 | default: | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
193 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
194 | case SND_SOC_DAIFMT_NB_NF: | |
195 | break; | |
196 | case SND_SOC_DAIFMT_IB_IF: | |
197 | iface |= 0x00c; | |
198 | break; | |
199 | case SND_SOC_DAIFMT_IB_NF: | |
200 | iface |= 0x008; | |
201 | break; | |
202 | case SND_SOC_DAIFMT_NB_IF: | |
203 | iface |= 0x004; | |
204 | break; | |
205 | default: | |
206 | return -EINVAL; | |
207 | } | |
208 | ||
209 | /* Finally, write out the values */ | |
210 | snd_soc_update_bits(codec, reg, 0xf, iface); | |
211 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master); | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
216 | static int mclk_ratios[] = { | |
217 | 128, | |
218 | 192, | |
219 | 256, | |
220 | 384, | |
221 | 512, | |
222 | 768, | |
223 | }; | |
224 | ||
225 | static int wm8776_hw_params(struct snd_pcm_substream *substream, | |
226 | struct snd_pcm_hw_params *params, | |
227 | struct snd_soc_dai *dai) | |
228 | { | |
229 | struct snd_soc_codec *codec = dai->codec; | |
230 | struct wm8776_priv *wm8776 = codec->private_data; | |
231 | int iface_reg, iface; | |
232 | int ratio_shift, master; | |
233 | int i; | |
234 | ||
235 | iface = 0; | |
236 | ||
237 | switch (dai->id) { | |
238 | case WM8776_DAI_DAC: | |
239 | iface_reg = WM8776_DACIFCTRL; | |
240 | master = 0x80; | |
241 | ratio_shift = 4; | |
242 | break; | |
243 | case WM8776_DAI_ADC: | |
244 | iface_reg = WM8776_ADCIFCTRL; | |
245 | master = 0x100; | |
246 | ratio_shift = 0; | |
247 | break; | |
248 | default: | |
249 | return -EINVAL; | |
250 | } | |
251 | ||
252 | ||
253 | /* Set word length */ | |
254 | switch (params_format(params)) { | |
255 | case SNDRV_PCM_FORMAT_S16_LE: | |
256 | break; | |
257 | case SNDRV_PCM_FORMAT_S20_3LE: | |
258 | iface |= 0x10; | |
259 | break; | |
260 | case SNDRV_PCM_FORMAT_S24_LE: | |
261 | iface |= 0x20; | |
262 | break; | |
263 | case SNDRV_PCM_FORMAT_S32_LE: | |
264 | iface |= 0x30; | |
265 | break; | |
266 | } | |
267 | ||
268 | /* Only need to set MCLK/LRCLK ratio if we're master */ | |
269 | if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) { | |
270 | for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) { | |
271 | if (wm8776->sysclk[dai->id] / params_rate(params) | |
272 | == mclk_ratios[i]) | |
273 | break; | |
274 | } | |
275 | ||
276 | if (i == ARRAY_SIZE(mclk_ratios)) { | |
277 | dev_err(codec->dev, | |
278 | "Unable to configure MCLK ratio %d/%d\n", | |
279 | wm8776->sysclk[dai->id], params_rate(params)); | |
280 | return -EINVAL; | |
281 | } | |
282 | ||
283 | dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]); | |
284 | ||
285 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, | |
286 | 0x7 << ratio_shift, i << ratio_shift); | |
287 | } else { | |
288 | dev_dbg(codec->dev, "DAI in slave mode\n"); | |
289 | } | |
290 | ||
291 | snd_soc_update_bits(codec, iface_reg, 0x30, iface); | |
292 | ||
293 | return 0; | |
294 | } | |
295 | ||
296 | static int wm8776_mute(struct snd_soc_dai *dai, int mute) | |
297 | { | |
298 | struct snd_soc_codec *codec = dai->codec; | |
299 | ||
300 | return snd_soc_write(codec, WM8776_DACMUTE, !!mute); | |
301 | } | |
302 | ||
303 | static int wm8776_set_sysclk(struct snd_soc_dai *dai, | |
304 | int clk_id, unsigned int freq, int dir) | |
305 | { | |
306 | struct snd_soc_codec *codec = dai->codec; | |
307 | struct wm8776_priv *wm8776 = codec->private_data; | |
308 | ||
309 | BUG_ON(dai->id >= ARRAY_SIZE(wm8776->sysclk)); | |
310 | ||
311 | wm8776->sysclk[dai->id] = freq; | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
316 | static int wm8776_set_bias_level(struct snd_soc_codec *codec, | |
317 | enum snd_soc_bias_level level) | |
318 | { | |
319 | switch (level) { | |
320 | case SND_SOC_BIAS_ON: | |
321 | break; | |
322 | case SND_SOC_BIAS_PREPARE: | |
323 | break; | |
324 | case SND_SOC_BIAS_STANDBY: | |
325 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
326 | /* Disable the global powerdown; DAPM does the rest */ | |
327 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0); | |
328 | } | |
329 | ||
330 | break; | |
331 | case SND_SOC_BIAS_OFF: | |
332 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1); | |
333 | break; | |
334 | } | |
335 | ||
336 | codec->bias_level = level; | |
337 | return 0; | |
338 | } | |
339 | ||
340 | #define WM8776_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
341 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ | |
342 | SNDRV_PCM_RATE_96000) | |
343 | ||
344 | ||
345 | #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
346 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
347 | ||
348 | static struct snd_soc_dai_ops wm8776_dac_ops = { | |
349 | .digital_mute = wm8776_mute, | |
350 | .hw_params = wm8776_hw_params, | |
351 | .set_fmt = wm8776_set_fmt, | |
352 | .set_sysclk = wm8776_set_sysclk, | |
353 | }; | |
354 | ||
355 | static struct snd_soc_dai_ops wm8776_adc_ops = { | |
356 | .hw_params = wm8776_hw_params, | |
357 | .set_fmt = wm8776_set_fmt, | |
358 | .set_sysclk = wm8776_set_sysclk, | |
359 | }; | |
360 | ||
361 | struct snd_soc_dai wm8776_dai[] = { | |
362 | { | |
363 | .name = "WM8776 Playback", | |
364 | .id = WM8776_DAI_DAC, | |
365 | .playback = { | |
366 | .stream_name = "Playback", | |
367 | .channels_min = 2, | |
368 | .channels_max = 2, | |
369 | .rates = WM8776_RATES, | |
370 | .formats = WM8776_FORMATS, | |
371 | }, | |
372 | .ops = &wm8776_dac_ops, | |
373 | }, | |
374 | { | |
375 | .name = "WM8776 Capture", | |
376 | .id = WM8776_DAI_ADC, | |
377 | .capture = { | |
378 | .stream_name = "Capture", | |
379 | .channels_min = 2, | |
380 | .channels_max = 2, | |
381 | .rates = WM8776_RATES, | |
382 | .formats = WM8776_FORMATS, | |
383 | }, | |
384 | .ops = &wm8776_adc_ops, | |
385 | }, | |
386 | }; | |
387 | EXPORT_SYMBOL_GPL(wm8776_dai); | |
388 | ||
389 | #ifdef CONFIG_PM | |
390 | static int wm8776_suspend(struct platform_device *pdev, pm_message_t state) | |
391 | { | |
392 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
393 | struct snd_soc_codec *codec = socdev->card->codec; | |
394 | ||
395 | wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | static int wm8776_resume(struct platform_device *pdev) | |
401 | { | |
402 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
403 | struct snd_soc_codec *codec = socdev->card->codec; | |
404 | int i; | |
405 | u8 data[2]; | |
406 | u16 *cache = codec->reg_cache; | |
407 | ||
408 | /* Sync reg_cache with the hardware */ | |
409 | for (i = 0; i < ARRAY_SIZE(wm8776_reg); i++) { | |
e0fb28e0 MB |
410 | if (cache[i] == wm8776_reg[i]) |
411 | continue; | |
924914ee MB |
412 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
413 | data[1] = cache[i] & 0x00ff; | |
414 | codec->hw_write(codec->control_data, data, 2); | |
415 | } | |
416 | ||
417 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
418 | ||
419 | return 0; | |
420 | } | |
421 | #else | |
422 | #define wm8776_suspend NULL | |
423 | #define wm8776_resume NULL | |
424 | #endif | |
425 | ||
426 | static int wm8776_probe(struct platform_device *pdev) | |
427 | { | |
428 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
429 | struct snd_soc_codec *codec; | |
430 | int ret = 0; | |
431 | ||
432 | if (wm8776_codec == NULL) { | |
433 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
434 | return -ENODEV; | |
435 | } | |
436 | ||
437 | socdev->card->codec = wm8776_codec; | |
438 | codec = wm8776_codec; | |
439 | ||
440 | /* register pcms */ | |
441 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
442 | if (ret < 0) { | |
443 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); | |
444 | goto pcm_err; | |
445 | } | |
446 | ||
447 | snd_soc_add_controls(codec, wm8776_snd_controls, | |
448 | ARRAY_SIZE(wm8776_snd_controls)); | |
449 | snd_soc_dapm_new_controls(codec, wm8776_dapm_widgets, | |
450 | ARRAY_SIZE(wm8776_dapm_widgets)); | |
451 | snd_soc_dapm_add_routes(codec, routes, ARRAY_SIZE(routes)); | |
452 | ||
924914ee MB |
453 | return ret; |
454 | ||
924914ee MB |
455 | pcm_err: |
456 | return ret; | |
457 | } | |
458 | ||
459 | /* power down chip */ | |
460 | static int wm8776_remove(struct platform_device *pdev) | |
461 | { | |
462 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
463 | ||
464 | snd_soc_free_pcms(socdev); | |
465 | snd_soc_dapm_free(socdev); | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | struct snd_soc_codec_device soc_codec_dev_wm8776 = { | |
471 | .probe = wm8776_probe, | |
472 | .remove = wm8776_remove, | |
473 | .suspend = wm8776_suspend, | |
474 | .resume = wm8776_resume, | |
475 | }; | |
476 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8776); | |
477 | ||
35b1207b MB |
478 | static int wm8776_register(struct wm8776_priv *wm8776, |
479 | enum snd_soc_control_type control) | |
924914ee MB |
480 | { |
481 | int ret, i; | |
482 | struct snd_soc_codec *codec = &wm8776->codec; | |
483 | ||
484 | if (wm8776_codec) { | |
485 | dev_err(codec->dev, "Another WM8776 is registered\n"); | |
486 | ret = -EINVAL; | |
487 | goto err; | |
488 | } | |
489 | ||
490 | mutex_init(&codec->mutex); | |
491 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
492 | INIT_LIST_HEAD(&codec->dapm_paths); | |
493 | ||
494 | codec->private_data = wm8776; | |
495 | codec->name = "WM8776"; | |
496 | codec->owner = THIS_MODULE; | |
924914ee MB |
497 | codec->bias_level = SND_SOC_BIAS_OFF; |
498 | codec->set_bias_level = wm8776_set_bias_level; | |
499 | codec->dai = wm8776_dai; | |
500 | codec->num_dai = ARRAY_SIZE(wm8776_dai); | |
501 | codec->reg_cache_size = WM8776_CACHEREGNUM; | |
502 | codec->reg_cache = &wm8776->reg_cache; | |
503 | ||
504 | memcpy(codec->reg_cache, wm8776_reg, sizeof(wm8776_reg)); | |
505 | ||
35b1207b MB |
506 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); |
507 | if (ret < 0) { | |
508 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
509 | goto err; | |
510 | } | |
511 | ||
924914ee MB |
512 | for (i = 0; i < ARRAY_SIZE(wm8776_dai); i++) |
513 | wm8776_dai[i].dev = codec->dev; | |
514 | ||
515 | ret = wm8776_reset(codec); | |
516 | if (ret < 0) { | |
517 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); | |
518 | goto err; | |
519 | } | |
520 | ||
521 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
522 | ||
523 | /* Latch the update bits; right channel only since we always | |
524 | * update both. */ | |
525 | snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100); | |
526 | snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100); | |
527 | ||
528 | wm8776_codec = codec; | |
529 | ||
530 | ret = snd_soc_register_codec(codec); | |
531 | if (ret != 0) { | |
532 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
533 | goto err; | |
534 | } | |
535 | ||
536 | ret = snd_soc_register_dais(wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
537 | if (ret != 0) { | |
538 | dev_err(codec->dev, "Failed to register DAIs: %d\n", ret); | |
539 | goto err_codec; | |
540 | } | |
541 | ||
542 | return 0; | |
543 | ||
544 | err_codec: | |
545 | snd_soc_unregister_codec(codec); | |
546 | err: | |
547 | kfree(wm8776); | |
548 | return ret; | |
549 | } | |
550 | ||
551 | static void wm8776_unregister(struct wm8776_priv *wm8776) | |
552 | { | |
553 | wm8776_set_bias_level(&wm8776->codec, SND_SOC_BIAS_OFF); | |
554 | snd_soc_unregister_dais(wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
555 | snd_soc_unregister_codec(&wm8776->codec); | |
556 | kfree(wm8776); | |
557 | wm8776_codec = NULL; | |
558 | } | |
559 | ||
560 | #if defined(CONFIG_SPI_MASTER) | |
561 | static int wm8776_spi_write(struct spi_device *spi, const char *data, int len) | |
562 | { | |
563 | struct spi_transfer t; | |
564 | struct spi_message m; | |
565 | u8 msg[2]; | |
566 | ||
567 | if (len <= 0) | |
568 | return 0; | |
569 | ||
570 | msg[0] = data[0]; | |
571 | msg[1] = data[1]; | |
572 | ||
573 | spi_message_init(&m); | |
574 | memset(&t, 0, (sizeof t)); | |
575 | ||
576 | t.tx_buf = &msg[0]; | |
577 | t.len = len; | |
578 | ||
579 | spi_message_add_tail(&t, &m); | |
580 | spi_sync(spi, &m); | |
581 | ||
582 | return len; | |
583 | } | |
584 | ||
585 | static int __devinit wm8776_spi_probe(struct spi_device *spi) | |
586 | { | |
587 | struct snd_soc_codec *codec; | |
588 | struct wm8776_priv *wm8776; | |
589 | ||
590 | wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); | |
591 | if (wm8776 == NULL) | |
592 | return -ENOMEM; | |
593 | ||
594 | codec = &wm8776->codec; | |
595 | codec->control_data = spi; | |
596 | codec->hw_write = (hw_write_t)wm8776_spi_write; | |
597 | codec->dev = &spi->dev; | |
598 | ||
599 | dev_set_drvdata(&spi->dev, wm8776); | |
600 | ||
35b1207b | 601 | return wm8776_register(wm8776, SND_SOC_SPI); |
924914ee MB |
602 | } |
603 | ||
604 | static int __devexit wm8776_spi_remove(struct spi_device *spi) | |
605 | { | |
606 | struct wm8776_priv *wm8776 = dev_get_drvdata(&spi->dev); | |
607 | ||
608 | wm8776_unregister(wm8776); | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
924914ee MB |
613 | static struct spi_driver wm8776_spi_driver = { |
614 | .driver = { | |
615 | .name = "wm8776", | |
616 | .bus = &spi_bus_type, | |
617 | .owner = THIS_MODULE, | |
618 | }, | |
619 | .probe = wm8776_spi_probe, | |
924914ee MB |
620 | .remove = __devexit_p(wm8776_spi_remove), |
621 | }; | |
622 | #endif /* CONFIG_SPI_MASTER */ | |
623 | ||
624 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
625 | static __devinit int wm8776_i2c_probe(struct i2c_client *i2c, | |
626 | const struct i2c_device_id *id) | |
627 | { | |
628 | struct wm8776_priv *wm8776; | |
629 | struct snd_soc_codec *codec; | |
630 | ||
631 | wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); | |
632 | if (wm8776 == NULL) | |
633 | return -ENOMEM; | |
634 | ||
635 | codec = &wm8776->codec; | |
636 | codec->hw_write = (hw_write_t)i2c_master_send; | |
637 | ||
638 | i2c_set_clientdata(i2c, wm8776); | |
639 | codec->control_data = i2c; | |
640 | ||
641 | codec->dev = &i2c->dev; | |
642 | ||
35b1207b | 643 | return wm8776_register(wm8776, SND_SOC_I2C); |
924914ee MB |
644 | } |
645 | ||
646 | static __devexit int wm8776_i2c_remove(struct i2c_client *client) | |
647 | { | |
648 | struct wm8776_priv *wm8776 = i2c_get_clientdata(client); | |
649 | wm8776_unregister(wm8776); | |
650 | return 0; | |
651 | } | |
652 | ||
924914ee MB |
653 | static const struct i2c_device_id wm8776_i2c_id[] = { |
654 | { "wm8776", 0 }, | |
655 | { } | |
656 | }; | |
657 | MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id); | |
658 | ||
659 | static struct i2c_driver wm8776_i2c_driver = { | |
660 | .driver = { | |
661 | .name = "wm8776", | |
662 | .owner = THIS_MODULE, | |
663 | }, | |
664 | .probe = wm8776_i2c_probe, | |
665 | .remove = __devexit_p(wm8776_i2c_remove), | |
924914ee MB |
666 | .id_table = wm8776_i2c_id, |
667 | }; | |
668 | #endif | |
669 | ||
670 | static int __init wm8776_modinit(void) | |
671 | { | |
672 | int ret; | |
673 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
674 | ret = i2c_add_driver(&wm8776_i2c_driver); | |
675 | if (ret != 0) { | |
676 | printk(KERN_ERR "Failed to register WM8776 I2C driver: %d\n", | |
677 | ret); | |
678 | } | |
679 | #endif | |
680 | #if defined(CONFIG_SPI_MASTER) | |
681 | ret = spi_register_driver(&wm8776_spi_driver); | |
682 | if (ret != 0) { | |
683 | printk(KERN_ERR "Failed to register WM8776 SPI driver: %d\n", | |
684 | ret); | |
685 | } | |
686 | #endif | |
687 | return 0; | |
688 | } | |
689 | module_init(wm8776_modinit); | |
690 | ||
691 | static void __exit wm8776_exit(void) | |
692 | { | |
693 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
694 | i2c_del_driver(&wm8776_i2c_driver); | |
695 | #endif | |
696 | #if defined(CONFIG_SPI_MASTER) | |
697 | spi_unregister_driver(&wm8776_spi_driver); | |
698 | #endif | |
699 | } | |
700 | module_exit(wm8776_exit); | |
701 | ||
702 | MODULE_DESCRIPTION("ASoC WM8776 driver"); | |
703 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
704 | MODULE_LICENSE("GPL"); |