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