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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> | |
924914ee MB |
28 | #include <sound/initval.h> |
29 | #include <sound/tlv.h> | |
30 | ||
31 | #include "wm8776.h" | |
32 | ||
924914ee MB |
33 | /* codec private data */ |
34 | struct wm8776_priv { | |
f0fba2ad | 35 | enum snd_soc_control_type control_type; |
924914ee MB |
36 | int sysclk[2]; |
37 | }; | |
38 | ||
924914ee MB |
39 | static const u16 wm8776_reg[WM8776_CACHEREGNUM] = { |
40 | 0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */ | |
41 | 0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */ | |
42 | 0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */ | |
43 | 0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */ | |
44 | 0xa6, 0x01, 0x01 | |
45 | }; | |
46 | ||
924914ee MB |
47 | static int wm8776_reset(struct snd_soc_codec *codec) |
48 | { | |
35b1207b | 49 | return snd_soc_write(codec, WM8776_RESET, 0); |
924914ee MB |
50 | } |
51 | ||
52 | static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1); | |
53 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); | |
54 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1); | |
55 | ||
56 | static const struct snd_kcontrol_new wm8776_snd_controls[] = { | |
57 | SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL, | |
58 | 0, 127, 0, hp_tlv), | |
59 | SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL, | |
60 | 0, 255, 0, dac_tlv), | |
61 | SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0), | |
62 | ||
63 | SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0), | |
64 | ||
65 | SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL, | |
66 | 0, 255, 0, adc_tlv), | |
67 | SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1), | |
68 | SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0), | |
69 | SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1), | |
70 | }; | |
71 | ||
72 | static const struct snd_kcontrol_new inmix_controls[] = { | |
73 | SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0), | |
74 | SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0), | |
75 | SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0), | |
76 | SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0), | |
77 | SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0), | |
78 | }; | |
79 | ||
80 | static const struct snd_kcontrol_new outmix_controls[] = { | |
81 | SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0), | |
82 | SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0), | |
83 | SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0), | |
84 | }; | |
85 | ||
86 | static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = { | |
87 | SND_SOC_DAPM_INPUT("AUX"), | |
924914ee MB |
88 | |
89 | SND_SOC_DAPM_INPUT("AIN1"), | |
90 | SND_SOC_DAPM_INPUT("AIN2"), | |
91 | SND_SOC_DAPM_INPUT("AIN3"), | |
92 | SND_SOC_DAPM_INPUT("AIN4"), | |
93 | SND_SOC_DAPM_INPUT("AIN5"), | |
94 | ||
95 | SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1, | |
96 | inmix_controls, ARRAY_SIZE(inmix_controls)), | |
97 | ||
98 | SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1), | |
99 | SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1), | |
100 | ||
101 | SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, | |
102 | outmix_controls, ARRAY_SIZE(outmix_controls)), | |
103 | ||
104 | SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0), | |
105 | ||
106 | SND_SOC_DAPM_OUTPUT("VOUT"), | |
107 | ||
108 | SND_SOC_DAPM_OUTPUT("HPOUTL"), | |
109 | SND_SOC_DAPM_OUTPUT("HPOUTR"), | |
110 | }; | |
111 | ||
112 | static const struct snd_soc_dapm_route routes[] = { | |
113 | { "Input Mixer", "AIN1 Switch", "AIN1" }, | |
114 | { "Input Mixer", "AIN2 Switch", "AIN2" }, | |
115 | { "Input Mixer", "AIN3 Switch", "AIN3" }, | |
116 | { "Input Mixer", "AIN4 Switch", "AIN4" }, | |
117 | { "Input Mixer", "AIN5 Switch", "AIN5" }, | |
118 | ||
119 | { "ADC", NULL, "Input Mixer" }, | |
120 | ||
121 | { "Output Mixer", "DAC Switch", "DAC" }, | |
122 | { "Output Mixer", "AUX Switch", "AUX" }, | |
123 | { "Output Mixer", "Bypass Switch", "Input Mixer" }, | |
124 | ||
125 | { "VOUT", NULL, "Output Mixer" }, | |
126 | ||
127 | { "Headphone PGA", NULL, "Output Mixer" }, | |
128 | ||
129 | { "HPOUTL", NULL, "Headphone PGA" }, | |
130 | { "HPOUTR", NULL, "Headphone PGA" }, | |
131 | }; | |
132 | ||
133 | static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
134 | { | |
135 | struct snd_soc_codec *codec = dai->codec; | |
136 | int reg, iface, master; | |
137 | ||
f0fba2ad | 138 | switch (dai->driver->id) { |
924914ee MB |
139 | case WM8776_DAI_DAC: |
140 | reg = WM8776_DACIFCTRL; | |
141 | master = 0x80; | |
142 | break; | |
143 | case WM8776_DAI_ADC: | |
144 | reg = WM8776_ADCIFCTRL; | |
145 | master = 0x100; | |
146 | break; | |
147 | default: | |
148 | return -EINVAL; | |
149 | } | |
150 | ||
151 | iface = 0; | |
152 | ||
153 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
154 | case SND_SOC_DAIFMT_CBM_CFM: | |
155 | break; | |
156 | case SND_SOC_DAIFMT_CBS_CFS: | |
157 | master = 0; | |
158 | break; | |
159 | default: | |
160 | return -EINVAL; | |
161 | } | |
162 | ||
163 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
164 | case SND_SOC_DAIFMT_I2S: | |
165 | iface |= 0x0002; | |
166 | break; | |
167 | case SND_SOC_DAIFMT_RIGHT_J: | |
168 | break; | |
169 | case SND_SOC_DAIFMT_LEFT_J: | |
170 | iface |= 0x0001; | |
171 | break; | |
924914ee MB |
172 | default: |
173 | return -EINVAL; | |
174 | } | |
175 | ||
176 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
177 | case SND_SOC_DAIFMT_NB_NF: | |
178 | break; | |
179 | case SND_SOC_DAIFMT_IB_IF: | |
180 | iface |= 0x00c; | |
181 | break; | |
182 | case SND_SOC_DAIFMT_IB_NF: | |
183 | iface |= 0x008; | |
184 | break; | |
185 | case SND_SOC_DAIFMT_NB_IF: | |
186 | iface |= 0x004; | |
187 | break; | |
188 | default: | |
189 | return -EINVAL; | |
190 | } | |
191 | ||
192 | /* Finally, write out the values */ | |
193 | snd_soc_update_bits(codec, reg, 0xf, iface); | |
194 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master); | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | static int mclk_ratios[] = { | |
200 | 128, | |
201 | 192, | |
202 | 256, | |
203 | 384, | |
204 | 512, | |
205 | 768, | |
206 | }; | |
207 | ||
208 | static int wm8776_hw_params(struct snd_pcm_substream *substream, | |
209 | struct snd_pcm_hw_params *params, | |
210 | struct snd_soc_dai *dai) | |
211 | { | |
212 | struct snd_soc_codec *codec = dai->codec; | |
b2c812e2 | 213 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); |
924914ee MB |
214 | int iface_reg, iface; |
215 | int ratio_shift, master; | |
216 | int i; | |
217 | ||
218 | iface = 0; | |
219 | ||
f0fba2ad | 220 | switch (dai->driver->id) { |
924914ee MB |
221 | case WM8776_DAI_DAC: |
222 | iface_reg = WM8776_DACIFCTRL; | |
223 | master = 0x80; | |
224 | ratio_shift = 4; | |
225 | break; | |
226 | case WM8776_DAI_ADC: | |
227 | iface_reg = WM8776_ADCIFCTRL; | |
228 | master = 0x100; | |
229 | ratio_shift = 0; | |
230 | break; | |
231 | default: | |
232 | return -EINVAL; | |
233 | } | |
234 | ||
235 | ||
236 | /* Set word length */ | |
237 | switch (params_format(params)) { | |
238 | case SNDRV_PCM_FORMAT_S16_LE: | |
239 | break; | |
240 | case SNDRV_PCM_FORMAT_S20_3LE: | |
241 | iface |= 0x10; | |
242 | break; | |
243 | case SNDRV_PCM_FORMAT_S24_LE: | |
244 | iface |= 0x20; | |
245 | break; | |
246 | case SNDRV_PCM_FORMAT_S32_LE: | |
247 | iface |= 0x30; | |
248 | break; | |
249 | } | |
250 | ||
251 | /* Only need to set MCLK/LRCLK ratio if we're master */ | |
252 | if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) { | |
253 | for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) { | |
f0fba2ad | 254 | if (wm8776->sysclk[dai->driver->id] / params_rate(params) |
924914ee MB |
255 | == mclk_ratios[i]) |
256 | break; | |
257 | } | |
258 | ||
259 | if (i == ARRAY_SIZE(mclk_ratios)) { | |
260 | dev_err(codec->dev, | |
261 | "Unable to configure MCLK ratio %d/%d\n", | |
f0fba2ad | 262 | wm8776->sysclk[dai->driver->id], params_rate(params)); |
924914ee MB |
263 | return -EINVAL; |
264 | } | |
265 | ||
266 | dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]); | |
267 | ||
268 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, | |
269 | 0x7 << ratio_shift, i << ratio_shift); | |
270 | } else { | |
271 | dev_dbg(codec->dev, "DAI in slave mode\n"); | |
272 | } | |
273 | ||
274 | snd_soc_update_bits(codec, iface_reg, 0x30, iface); | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | static int wm8776_mute(struct snd_soc_dai *dai, int mute) | |
280 | { | |
281 | struct snd_soc_codec *codec = dai->codec; | |
282 | ||
283 | return snd_soc_write(codec, WM8776_DACMUTE, !!mute); | |
284 | } | |
285 | ||
286 | static int wm8776_set_sysclk(struct snd_soc_dai *dai, | |
287 | int clk_id, unsigned int freq, int dir) | |
288 | { | |
289 | struct snd_soc_codec *codec = dai->codec; | |
b2c812e2 | 290 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); |
924914ee | 291 | |
f0fba2ad | 292 | BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk)); |
924914ee | 293 | |
f0fba2ad | 294 | wm8776->sysclk[dai->driver->id] = freq; |
924914ee MB |
295 | |
296 | return 0; | |
297 | } | |
298 | ||
299 | static int wm8776_set_bias_level(struct snd_soc_codec *codec, | |
300 | enum snd_soc_bias_level level) | |
301 | { | |
302 | switch (level) { | |
303 | case SND_SOC_BIAS_ON: | |
304 | break; | |
305 | case SND_SOC_BIAS_PREPARE: | |
306 | break; | |
307 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 308 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { |
924914ee MB |
309 | /* Disable the global powerdown; DAPM does the rest */ |
310 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0); | |
311 | } | |
312 | ||
313 | break; | |
314 | case SND_SOC_BIAS_OFF: | |
315 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1); | |
316 | break; | |
317 | } | |
318 | ||
ce6120cc | 319 | codec->dapm.bias_level = level; |
924914ee MB |
320 | return 0; |
321 | } | |
322 | ||
323 | #define WM8776_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
324 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ | |
325 | SNDRV_PCM_RATE_96000) | |
326 | ||
327 | ||
328 | #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
329 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
330 | ||
331 | static struct snd_soc_dai_ops wm8776_dac_ops = { | |
332 | .digital_mute = wm8776_mute, | |
333 | .hw_params = wm8776_hw_params, | |
334 | .set_fmt = wm8776_set_fmt, | |
335 | .set_sysclk = wm8776_set_sysclk, | |
336 | }; | |
337 | ||
338 | static struct snd_soc_dai_ops wm8776_adc_ops = { | |
339 | .hw_params = wm8776_hw_params, | |
340 | .set_fmt = wm8776_set_fmt, | |
341 | .set_sysclk = wm8776_set_sysclk, | |
342 | }; | |
343 | ||
f0fba2ad | 344 | static struct snd_soc_dai_driver wm8776_dai[] = { |
924914ee | 345 | { |
f0fba2ad LG |
346 | .name = "wm8776-hifi-playback", |
347 | .id = WM8776_DAI_DAC, | |
924914ee MB |
348 | .playback = { |
349 | .stream_name = "Playback", | |
350 | .channels_min = 2, | |
351 | .channels_max = 2, | |
352 | .rates = WM8776_RATES, | |
353 | .formats = WM8776_FORMATS, | |
354 | }, | |
355 | .ops = &wm8776_dac_ops, | |
356 | }, | |
357 | { | |
f0fba2ad LG |
358 | .name = "wm8776-hifi-capture", |
359 | .id = WM8776_DAI_ADC, | |
924914ee MB |
360 | .capture = { |
361 | .stream_name = "Capture", | |
362 | .channels_min = 2, | |
363 | .channels_max = 2, | |
364 | .rates = WM8776_RATES, | |
365 | .formats = WM8776_FORMATS, | |
366 | }, | |
367 | .ops = &wm8776_adc_ops, | |
368 | }, | |
369 | }; | |
924914ee MB |
370 | |
371 | #ifdef CONFIG_PM | |
f0fba2ad | 372 | static int wm8776_suspend(struct snd_soc_codec *codec, pm_message_t state) |
924914ee | 373 | { |
924914ee MB |
374 | wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
f0fba2ad | 379 | static int wm8776_resume(struct snd_soc_codec *codec) |
924914ee | 380 | { |
924914ee MB |
381 | int i; |
382 | u8 data[2]; | |
383 | u16 *cache = codec->reg_cache; | |
384 | ||
385 | /* Sync reg_cache with the hardware */ | |
386 | for (i = 0; i < ARRAY_SIZE(wm8776_reg); i++) { | |
e0fb28e0 MB |
387 | if (cache[i] == wm8776_reg[i]) |
388 | continue; | |
924914ee MB |
389 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
390 | data[1] = cache[i] & 0x00ff; | |
391 | codec->hw_write(codec->control_data, data, 2); | |
392 | } | |
393 | ||
394 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
395 | ||
396 | return 0; | |
397 | } | |
398 | #else | |
399 | #define wm8776_suspend NULL | |
400 | #define wm8776_resume NULL | |
401 | #endif | |
402 | ||
f0fba2ad | 403 | static int wm8776_probe(struct snd_soc_codec *codec) |
924914ee | 404 | { |
f0fba2ad | 405 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); |
ce6120cc | 406 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
924914ee MB |
407 | int ret = 0; |
408 | ||
f0fba2ad LG |
409 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type); |
410 | if (ret < 0) { | |
411 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
412 | return ret; | |
924914ee MB |
413 | } |
414 | ||
f0fba2ad | 415 | ret = wm8776_reset(codec); |
924914ee | 416 | if (ret < 0) { |
f0fba2ad LG |
417 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); |
418 | return ret; | |
924914ee MB |
419 | } |
420 | ||
f0fba2ad LG |
421 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
422 | ||
423 | /* Latch the update bits; right channel only since we always | |
424 | * update both. */ | |
425 | snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100); | |
426 | snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100); | |
427 | ||
924914ee MB |
428 | snd_soc_add_controls(codec, wm8776_snd_controls, |
429 | ARRAY_SIZE(wm8776_snd_controls)); | |
ce6120cc | 430 | snd_soc_dapm_new_controls(dapm, wm8776_dapm_widgets, |
924914ee | 431 | ARRAY_SIZE(wm8776_dapm_widgets)); |
ce6120cc | 432 | snd_soc_dapm_add_routes(dapm, routes, ARRAY_SIZE(routes)); |
924914ee | 433 | |
924914ee | 434 | return ret; |
924914ee MB |
435 | } |
436 | ||
437 | /* power down chip */ | |
f0fba2ad | 438 | static int wm8776_remove(struct snd_soc_codec *codec) |
924914ee | 439 | { |
f0fba2ad | 440 | wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); |
924914ee MB |
441 | return 0; |
442 | } | |
443 | ||
f0fba2ad | 444 | static struct snd_soc_codec_driver soc_codec_dev_wm8776 = { |
924914ee MB |
445 | .probe = wm8776_probe, |
446 | .remove = wm8776_remove, | |
447 | .suspend = wm8776_suspend, | |
448 | .resume = wm8776_resume, | |
f0fba2ad | 449 | .set_bias_level = wm8776_set_bias_level, |
e5eec34c | 450 | .reg_cache_size = ARRAY_SIZE(wm8776_reg), |
f0fba2ad LG |
451 | .reg_word_size = sizeof(u16), |
452 | .reg_cache_default = wm8776_reg, | |
924914ee | 453 | }; |
924914ee MB |
454 | |
455 | #if defined(CONFIG_SPI_MASTER) | |
924914ee MB |
456 | static int __devinit wm8776_spi_probe(struct spi_device *spi) |
457 | { | |
924914ee | 458 | struct wm8776_priv *wm8776; |
f0fba2ad | 459 | int ret; |
924914ee MB |
460 | |
461 | wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); | |
462 | if (wm8776 == NULL) | |
463 | return -ENOMEM; | |
464 | ||
f0fba2ad LG |
465 | wm8776->control_type = SND_SOC_SPI; |
466 | spi_set_drvdata(spi, wm8776); | |
924914ee | 467 | |
f0fba2ad LG |
468 | ret = snd_soc_register_codec(&spi->dev, |
469 | &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
470 | if (ret < 0) | |
471 | kfree(wm8776); | |
472 | return ret; | |
924914ee MB |
473 | } |
474 | ||
475 | static int __devexit wm8776_spi_remove(struct spi_device *spi) | |
476 | { | |
f0fba2ad LG |
477 | snd_soc_unregister_codec(&spi->dev); |
478 | kfree(spi_get_drvdata(spi)); | |
924914ee MB |
479 | return 0; |
480 | } | |
481 | ||
924914ee MB |
482 | static struct spi_driver wm8776_spi_driver = { |
483 | .driver = { | |
f0fba2ad | 484 | .name = "wm8776-codec", |
924914ee MB |
485 | .owner = THIS_MODULE, |
486 | }, | |
487 | .probe = wm8776_spi_probe, | |
924914ee MB |
488 | .remove = __devexit_p(wm8776_spi_remove), |
489 | }; | |
490 | #endif /* CONFIG_SPI_MASTER */ | |
491 | ||
492 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
493 | static __devinit int wm8776_i2c_probe(struct i2c_client *i2c, | |
494 | const struct i2c_device_id *id) | |
495 | { | |
496 | struct wm8776_priv *wm8776; | |
f0fba2ad | 497 | int ret; |
924914ee MB |
498 | |
499 | wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); | |
500 | if (wm8776 == NULL) | |
501 | return -ENOMEM; | |
502 | ||
924914ee | 503 | i2c_set_clientdata(i2c, wm8776); |
f0fba2ad | 504 | wm8776->control_type = SND_SOC_I2C; |
924914ee | 505 | |
f0fba2ad LG |
506 | ret = snd_soc_register_codec(&i2c->dev, |
507 | &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
508 | if (ret < 0) | |
509 | kfree(wm8776); | |
510 | return ret; | |
924914ee MB |
511 | } |
512 | ||
513 | static __devexit int wm8776_i2c_remove(struct i2c_client *client) | |
514 | { | |
f0fba2ad LG |
515 | snd_soc_unregister_codec(&client->dev); |
516 | kfree(i2c_get_clientdata(client)); | |
924914ee MB |
517 | return 0; |
518 | } | |
519 | ||
924914ee MB |
520 | static const struct i2c_device_id wm8776_i2c_id[] = { |
521 | { "wm8776", 0 }, | |
522 | { } | |
523 | }; | |
524 | MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id); | |
525 | ||
526 | static struct i2c_driver wm8776_i2c_driver = { | |
527 | .driver = { | |
f0fba2ad | 528 | .name = "wm8776-codec", |
924914ee MB |
529 | .owner = THIS_MODULE, |
530 | }, | |
531 | .probe = wm8776_i2c_probe, | |
532 | .remove = __devexit_p(wm8776_i2c_remove), | |
924914ee MB |
533 | .id_table = wm8776_i2c_id, |
534 | }; | |
535 | #endif | |
536 | ||
537 | static int __init wm8776_modinit(void) | |
538 | { | |
f0fba2ad | 539 | int ret = 0; |
924914ee MB |
540 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
541 | ret = i2c_add_driver(&wm8776_i2c_driver); | |
542 | if (ret != 0) { | |
f0fba2ad | 543 | printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n", |
924914ee MB |
544 | ret); |
545 | } | |
546 | #endif | |
547 | #if defined(CONFIG_SPI_MASTER) | |
548 | ret = spi_register_driver(&wm8776_spi_driver); | |
549 | if (ret != 0) { | |
f0fba2ad | 550 | printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n", |
924914ee MB |
551 | ret); |
552 | } | |
553 | #endif | |
f0fba2ad | 554 | return ret; |
924914ee MB |
555 | } |
556 | module_init(wm8776_modinit); | |
557 | ||
558 | static void __exit wm8776_exit(void) | |
559 | { | |
560 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
561 | i2c_del_driver(&wm8776_i2c_driver); | |
562 | #endif | |
563 | #if defined(CONFIG_SPI_MASTER) | |
564 | spi_unregister_driver(&wm8776_spi_driver); | |
565 | #endif | |
566 | } | |
567 | module_exit(wm8776_exit); | |
568 | ||
569 | MODULE_DESCRIPTION("ASoC WM8776 driver"); | |
570 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
571 | MODULE_LICENSE("GPL"); |