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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> | |
b6de4315 | 21 | #include <linux/of_device.h> |
924914ee MB |
22 | #include <linux/platform_device.h> |
23 | #include <linux/spi/spi.h> | |
5a0e3ad6 | 24 | #include <linux/slab.h> |
924914ee MB |
25 | #include <sound/core.h> |
26 | #include <sound/pcm.h> | |
27 | #include <sound/pcm_params.h> | |
28 | #include <sound/soc.h> | |
924914ee MB |
29 | #include <sound/initval.h> |
30 | #include <sound/tlv.h> | |
31 | ||
32 | #include "wm8776.h" | |
33 | ||
924914ee MB |
34 | /* codec private data */ |
35 | struct wm8776_priv { | |
f0fba2ad | 36 | enum snd_soc_control_type control_type; |
924914ee MB |
37 | int sysclk[2]; |
38 | }; | |
39 | ||
924914ee MB |
40 | static const u16 wm8776_reg[WM8776_CACHEREGNUM] = { |
41 | 0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */ | |
42 | 0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */ | |
43 | 0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */ | |
44 | 0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */ | |
45 | 0xa6, 0x01, 0x01 | |
46 | }; | |
47 | ||
924914ee MB |
48 | static int wm8776_reset(struct snd_soc_codec *codec) |
49 | { | |
35b1207b | 50 | return snd_soc_write(codec, WM8776_RESET, 0); |
924914ee MB |
51 | } |
52 | ||
53 | static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1); | |
54 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); | |
55 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1); | |
56 | ||
57 | static const struct snd_kcontrol_new wm8776_snd_controls[] = { | |
58 | SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL, | |
59 | 0, 127, 0, hp_tlv), | |
60 | SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL, | |
61 | 0, 255, 0, dac_tlv), | |
62 | SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0), | |
63 | ||
64 | SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0), | |
65 | ||
66 | SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL, | |
67 | 0, 255, 0, adc_tlv), | |
68 | SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1), | |
69 | SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0), | |
70 | SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1), | |
71 | }; | |
72 | ||
73 | static const struct snd_kcontrol_new inmix_controls[] = { | |
74 | SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0), | |
75 | SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0), | |
76 | SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0), | |
77 | SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0), | |
78 | SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0), | |
79 | }; | |
80 | ||
81 | static const struct snd_kcontrol_new outmix_controls[] = { | |
82 | SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0), | |
83 | SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0), | |
84 | SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0), | |
85 | }; | |
86 | ||
87 | static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = { | |
88 | SND_SOC_DAPM_INPUT("AUX"), | |
924914ee MB |
89 | |
90 | SND_SOC_DAPM_INPUT("AIN1"), | |
91 | SND_SOC_DAPM_INPUT("AIN2"), | |
92 | SND_SOC_DAPM_INPUT("AIN3"), | |
93 | SND_SOC_DAPM_INPUT("AIN4"), | |
94 | SND_SOC_DAPM_INPUT("AIN5"), | |
95 | ||
96 | SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1, | |
97 | inmix_controls, ARRAY_SIZE(inmix_controls)), | |
98 | ||
99 | SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1), | |
100 | SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1), | |
101 | ||
102 | SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, | |
103 | outmix_controls, ARRAY_SIZE(outmix_controls)), | |
104 | ||
105 | SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0), | |
106 | ||
107 | SND_SOC_DAPM_OUTPUT("VOUT"), | |
108 | ||
109 | SND_SOC_DAPM_OUTPUT("HPOUTL"), | |
110 | SND_SOC_DAPM_OUTPUT("HPOUTR"), | |
111 | }; | |
112 | ||
113 | static const struct snd_soc_dapm_route routes[] = { | |
114 | { "Input Mixer", "AIN1 Switch", "AIN1" }, | |
115 | { "Input Mixer", "AIN2 Switch", "AIN2" }, | |
116 | { "Input Mixer", "AIN3 Switch", "AIN3" }, | |
117 | { "Input Mixer", "AIN4 Switch", "AIN4" }, | |
118 | { "Input Mixer", "AIN5 Switch", "AIN5" }, | |
119 | ||
120 | { "ADC", NULL, "Input Mixer" }, | |
121 | ||
122 | { "Output Mixer", "DAC Switch", "DAC" }, | |
123 | { "Output Mixer", "AUX Switch", "AUX" }, | |
124 | { "Output Mixer", "Bypass Switch", "Input Mixer" }, | |
125 | ||
126 | { "VOUT", NULL, "Output Mixer" }, | |
127 | ||
128 | { "Headphone PGA", NULL, "Output Mixer" }, | |
129 | ||
130 | { "HPOUTL", NULL, "Headphone PGA" }, | |
131 | { "HPOUTR", NULL, "Headphone PGA" }, | |
132 | }; | |
133 | ||
134 | static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
135 | { | |
136 | struct snd_soc_codec *codec = dai->codec; | |
137 | int reg, iface, master; | |
138 | ||
f0fba2ad | 139 | switch (dai->driver->id) { |
924914ee MB |
140 | case WM8776_DAI_DAC: |
141 | reg = WM8776_DACIFCTRL; | |
142 | master = 0x80; | |
143 | break; | |
144 | case WM8776_DAI_ADC: | |
145 | reg = WM8776_ADCIFCTRL; | |
146 | master = 0x100; | |
147 | break; | |
148 | default: | |
149 | return -EINVAL; | |
150 | } | |
151 | ||
152 | iface = 0; | |
153 | ||
154 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
155 | case SND_SOC_DAIFMT_CBM_CFM: | |
156 | break; | |
157 | case SND_SOC_DAIFMT_CBS_CFS: | |
158 | master = 0; | |
159 | break; | |
160 | default: | |
161 | return -EINVAL; | |
162 | } | |
163 | ||
164 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
165 | case SND_SOC_DAIFMT_I2S: | |
166 | iface |= 0x0002; | |
167 | break; | |
168 | case SND_SOC_DAIFMT_RIGHT_J: | |
169 | break; | |
170 | case SND_SOC_DAIFMT_LEFT_J: | |
171 | iface |= 0x0001; | |
172 | break; | |
924914ee MB |
173 | default: |
174 | return -EINVAL; | |
175 | } | |
176 | ||
177 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
178 | case SND_SOC_DAIFMT_NB_NF: | |
179 | break; | |
180 | case SND_SOC_DAIFMT_IB_IF: | |
181 | iface |= 0x00c; | |
182 | break; | |
183 | case SND_SOC_DAIFMT_IB_NF: | |
184 | iface |= 0x008; | |
185 | break; | |
186 | case SND_SOC_DAIFMT_NB_IF: | |
187 | iface |= 0x004; | |
188 | break; | |
189 | default: | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
193 | /* Finally, write out the values */ | |
194 | snd_soc_update_bits(codec, reg, 0xf, iface); | |
195 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master); | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | static int mclk_ratios[] = { | |
201 | 128, | |
202 | 192, | |
203 | 256, | |
204 | 384, | |
205 | 512, | |
206 | 768, | |
207 | }; | |
208 | ||
209 | static int wm8776_hw_params(struct snd_pcm_substream *substream, | |
210 | struct snd_pcm_hw_params *params, | |
211 | struct snd_soc_dai *dai) | |
212 | { | |
213 | struct snd_soc_codec *codec = dai->codec; | |
b2c812e2 | 214 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); |
924914ee MB |
215 | int iface_reg, iface; |
216 | int ratio_shift, master; | |
217 | int i; | |
218 | ||
f0fba2ad | 219 | switch (dai->driver->id) { |
924914ee MB |
220 | case WM8776_DAI_DAC: |
221 | iface_reg = WM8776_DACIFCTRL; | |
222 | master = 0x80; | |
223 | ratio_shift = 4; | |
224 | break; | |
225 | case WM8776_DAI_ADC: | |
226 | iface_reg = WM8776_ADCIFCTRL; | |
227 | master = 0x100; | |
228 | ratio_shift = 0; | |
229 | break; | |
230 | default: | |
231 | return -EINVAL; | |
232 | } | |
233 | ||
924914ee | 234 | /* Set word length */ |
d1dc698a TT |
235 | switch (snd_pcm_format_width(params_format(params))) { |
236 | case 16: | |
237 | iface = 0; | |
238 | case 20: | |
239 | iface = 0x10; | |
924914ee | 240 | break; |
d1dc698a TT |
241 | case 24: |
242 | iface = 0x20; | |
924914ee | 243 | break; |
d1dc698a TT |
244 | case 32: |
245 | iface = 0x30; | |
924914ee | 246 | break; |
d1dc698a TT |
247 | default: |
248 | dev_err(codec->dev, "Unsupported sample size: %i\n", | |
249 | snd_pcm_format_width(params_format(params))); | |
250 | return -EINVAL; | |
924914ee MB |
251 | } |
252 | ||
253 | /* Only need to set MCLK/LRCLK ratio if we're master */ | |
254 | if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) { | |
255 | for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) { | |
f0fba2ad | 256 | if (wm8776->sysclk[dai->driver->id] / params_rate(params) |
924914ee MB |
257 | == mclk_ratios[i]) |
258 | break; | |
259 | } | |
260 | ||
261 | if (i == ARRAY_SIZE(mclk_ratios)) { | |
262 | dev_err(codec->dev, | |
263 | "Unable to configure MCLK ratio %d/%d\n", | |
f0fba2ad | 264 | wm8776->sysclk[dai->driver->id], params_rate(params)); |
924914ee MB |
265 | return -EINVAL; |
266 | } | |
267 | ||
268 | dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]); | |
269 | ||
270 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, | |
271 | 0x7 << ratio_shift, i << ratio_shift); | |
272 | } else { | |
273 | dev_dbg(codec->dev, "DAI in slave mode\n"); | |
274 | } | |
275 | ||
276 | snd_soc_update_bits(codec, iface_reg, 0x30, iface); | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
281 | static int wm8776_mute(struct snd_soc_dai *dai, int mute) | |
282 | { | |
283 | struct snd_soc_codec *codec = dai->codec; | |
284 | ||
285 | return snd_soc_write(codec, WM8776_DACMUTE, !!mute); | |
286 | } | |
287 | ||
288 | static int wm8776_set_sysclk(struct snd_soc_dai *dai, | |
289 | int clk_id, unsigned int freq, int dir) | |
290 | { | |
291 | struct snd_soc_codec *codec = dai->codec; | |
b2c812e2 | 292 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); |
924914ee | 293 | |
f0fba2ad | 294 | BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk)); |
924914ee | 295 | |
f0fba2ad | 296 | wm8776->sysclk[dai->driver->id] = freq; |
924914ee MB |
297 | |
298 | return 0; | |
299 | } | |
300 | ||
301 | static int wm8776_set_bias_level(struct snd_soc_codec *codec, | |
302 | enum snd_soc_bias_level level) | |
303 | { | |
304 | switch (level) { | |
305 | case SND_SOC_BIAS_ON: | |
306 | break; | |
307 | case SND_SOC_BIAS_PREPARE: | |
308 | break; | |
309 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 310 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { |
abe11d0a AL |
311 | snd_soc_cache_sync(codec); |
312 | ||
924914ee MB |
313 | /* Disable the global powerdown; DAPM does the rest */ |
314 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0); | |
315 | } | |
316 | ||
317 | break; | |
318 | case SND_SOC_BIAS_OFF: | |
319 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1); | |
320 | break; | |
321 | } | |
322 | ||
ce6120cc | 323 | codec->dapm.bias_level = level; |
924914ee MB |
324 | return 0; |
325 | } | |
326 | ||
924914ee MB |
327 | #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
328 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
329 | ||
85e7652d | 330 | static const struct snd_soc_dai_ops wm8776_dac_ops = { |
924914ee MB |
331 | .digital_mute = wm8776_mute, |
332 | .hw_params = wm8776_hw_params, | |
333 | .set_fmt = wm8776_set_fmt, | |
334 | .set_sysclk = wm8776_set_sysclk, | |
335 | }; | |
336 | ||
85e7652d | 337 | static const struct snd_soc_dai_ops wm8776_adc_ops = { |
924914ee MB |
338 | .hw_params = wm8776_hw_params, |
339 | .set_fmt = wm8776_set_fmt, | |
340 | .set_sysclk = wm8776_set_sysclk, | |
341 | }; | |
342 | ||
f0fba2ad | 343 | static struct snd_soc_dai_driver wm8776_dai[] = { |
924914ee | 344 | { |
f0fba2ad LG |
345 | .name = "wm8776-hifi-playback", |
346 | .id = WM8776_DAI_DAC, | |
924914ee MB |
347 | .playback = { |
348 | .stream_name = "Playback", | |
349 | .channels_min = 2, | |
350 | .channels_max = 2, | |
0016226d TT |
351 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
352 | .rate_min = 32000, | |
353 | .rate_max = 192000, | |
924914ee MB |
354 | .formats = WM8776_FORMATS, |
355 | }, | |
356 | .ops = &wm8776_dac_ops, | |
357 | }, | |
358 | { | |
f0fba2ad LG |
359 | .name = "wm8776-hifi-capture", |
360 | .id = WM8776_DAI_ADC, | |
924914ee MB |
361 | .capture = { |
362 | .stream_name = "Capture", | |
363 | .channels_min = 2, | |
364 | .channels_max = 2, | |
0016226d TT |
365 | .rates = SNDRV_PCM_RATE_CONTINUOUS, |
366 | .rate_min = 32000, | |
367 | .rate_max = 96000, | |
924914ee MB |
368 | .formats = WM8776_FORMATS, |
369 | }, | |
370 | .ops = &wm8776_adc_ops, | |
371 | }, | |
372 | }; | |
924914ee MB |
373 | |
374 | #ifdef CONFIG_PM | |
f0fba2ad | 375 | static int wm8776_suspend(struct snd_soc_codec *codec, pm_message_t state) |
924914ee | 376 | { |
924914ee MB |
377 | wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
f0fba2ad | 382 | static int wm8776_resume(struct snd_soc_codec *codec) |
924914ee | 383 | { |
924914ee | 384 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
924914ee MB |
385 | return 0; |
386 | } | |
387 | #else | |
388 | #define wm8776_suspend NULL | |
389 | #define wm8776_resume NULL | |
390 | #endif | |
391 | ||
f0fba2ad | 392 | static int wm8776_probe(struct snd_soc_codec *codec) |
924914ee | 393 | { |
f0fba2ad | 394 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); |
ce6120cc | 395 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
924914ee MB |
396 | int ret = 0; |
397 | ||
f0fba2ad LG |
398 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type); |
399 | if (ret < 0) { | |
400 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
401 | return ret; | |
924914ee MB |
402 | } |
403 | ||
f0fba2ad | 404 | ret = wm8776_reset(codec); |
924914ee | 405 | if (ret < 0) { |
f0fba2ad LG |
406 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); |
407 | return ret; | |
924914ee MB |
408 | } |
409 | ||
f0fba2ad LG |
410 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
411 | ||
412 | /* Latch the update bits; right channel only since we always | |
413 | * update both. */ | |
414 | snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100); | |
415 | snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100); | |
416 | ||
924914ee | 417 | return ret; |
924914ee MB |
418 | } |
419 | ||
420 | /* power down chip */ | |
f0fba2ad | 421 | static int wm8776_remove(struct snd_soc_codec *codec) |
924914ee | 422 | { |
f0fba2ad | 423 | wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); |
924914ee MB |
424 | return 0; |
425 | } | |
426 | ||
f0fba2ad | 427 | static struct snd_soc_codec_driver soc_codec_dev_wm8776 = { |
924914ee MB |
428 | .probe = wm8776_probe, |
429 | .remove = wm8776_remove, | |
430 | .suspend = wm8776_suspend, | |
431 | .resume = wm8776_resume, | |
f0fba2ad | 432 | .set_bias_level = wm8776_set_bias_level, |
e5eec34c | 433 | .reg_cache_size = ARRAY_SIZE(wm8776_reg), |
f0fba2ad LG |
434 | .reg_word_size = sizeof(u16), |
435 | .reg_cache_default = wm8776_reg, | |
1db3c98e MB |
436 | |
437 | .controls = wm8776_snd_controls, | |
438 | .num_controls = ARRAY_SIZE(wm8776_snd_controls), | |
439 | .dapm_widgets = wm8776_dapm_widgets, | |
440 | .num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets), | |
441 | .dapm_routes = routes, | |
442 | .num_dapm_routes = ARRAY_SIZE(routes), | |
924914ee | 443 | }; |
924914ee | 444 | |
b6de4315 MB |
445 | static const struct of_device_id wm8776_of_match[] = { |
446 | { .compatible = "wlf,wm8776", }, | |
447 | { } | |
448 | }; | |
449 | MODULE_DEVICE_TABLE(of, wm8776_of_match); | |
450 | ||
924914ee | 451 | #if defined(CONFIG_SPI_MASTER) |
924914ee MB |
452 | static int __devinit wm8776_spi_probe(struct spi_device *spi) |
453 | { | |
924914ee | 454 | struct wm8776_priv *wm8776; |
f0fba2ad | 455 | int ret; |
924914ee MB |
456 | |
457 | wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); | |
458 | if (wm8776 == NULL) | |
459 | return -ENOMEM; | |
460 | ||
f0fba2ad LG |
461 | wm8776->control_type = SND_SOC_SPI; |
462 | spi_set_drvdata(spi, wm8776); | |
924914ee | 463 | |
f0fba2ad LG |
464 | ret = snd_soc_register_codec(&spi->dev, |
465 | &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
466 | if (ret < 0) | |
467 | kfree(wm8776); | |
468 | return ret; | |
924914ee MB |
469 | } |
470 | ||
471 | static int __devexit wm8776_spi_remove(struct spi_device *spi) | |
472 | { | |
f0fba2ad LG |
473 | snd_soc_unregister_codec(&spi->dev); |
474 | kfree(spi_get_drvdata(spi)); | |
924914ee MB |
475 | return 0; |
476 | } | |
477 | ||
924914ee MB |
478 | static struct spi_driver wm8776_spi_driver = { |
479 | .driver = { | |
1e3ad571 | 480 | .name = "wm8776", |
924914ee | 481 | .owner = THIS_MODULE, |
b6de4315 | 482 | .of_match_table = wm8776_of_match, |
924914ee MB |
483 | }, |
484 | .probe = wm8776_spi_probe, | |
924914ee MB |
485 | .remove = __devexit_p(wm8776_spi_remove), |
486 | }; | |
487 | #endif /* CONFIG_SPI_MASTER */ | |
488 | ||
489 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
490 | static __devinit int wm8776_i2c_probe(struct i2c_client *i2c, | |
491 | const struct i2c_device_id *id) | |
492 | { | |
493 | struct wm8776_priv *wm8776; | |
f0fba2ad | 494 | int ret; |
924914ee MB |
495 | |
496 | wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); | |
497 | if (wm8776 == NULL) | |
498 | return -ENOMEM; | |
499 | ||
924914ee | 500 | i2c_set_clientdata(i2c, wm8776); |
f0fba2ad | 501 | wm8776->control_type = SND_SOC_I2C; |
924914ee | 502 | |
f0fba2ad LG |
503 | ret = snd_soc_register_codec(&i2c->dev, |
504 | &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
505 | if (ret < 0) | |
506 | kfree(wm8776); | |
507 | return ret; | |
924914ee MB |
508 | } |
509 | ||
510 | static __devexit int wm8776_i2c_remove(struct i2c_client *client) | |
511 | { | |
f0fba2ad LG |
512 | snd_soc_unregister_codec(&client->dev); |
513 | kfree(i2c_get_clientdata(client)); | |
924914ee MB |
514 | return 0; |
515 | } | |
516 | ||
924914ee MB |
517 | static const struct i2c_device_id wm8776_i2c_id[] = { |
518 | { "wm8776", 0 }, | |
519 | { } | |
520 | }; | |
521 | MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id); | |
522 | ||
523 | static struct i2c_driver wm8776_i2c_driver = { | |
524 | .driver = { | |
1e3ad571 | 525 | .name = "wm8776", |
924914ee | 526 | .owner = THIS_MODULE, |
b6de4315 | 527 | .of_match_table = wm8776_of_match, |
924914ee MB |
528 | }, |
529 | .probe = wm8776_i2c_probe, | |
530 | .remove = __devexit_p(wm8776_i2c_remove), | |
924914ee MB |
531 | .id_table = wm8776_i2c_id, |
532 | }; | |
533 | #endif | |
534 | ||
535 | static int __init wm8776_modinit(void) | |
536 | { | |
f0fba2ad | 537 | int ret = 0; |
924914ee MB |
538 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
539 | ret = i2c_add_driver(&wm8776_i2c_driver); | |
540 | if (ret != 0) { | |
f0fba2ad | 541 | printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n", |
924914ee MB |
542 | ret); |
543 | } | |
544 | #endif | |
545 | #if defined(CONFIG_SPI_MASTER) | |
546 | ret = spi_register_driver(&wm8776_spi_driver); | |
547 | if (ret != 0) { | |
f0fba2ad | 548 | printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n", |
924914ee MB |
549 | ret); |
550 | } | |
551 | #endif | |
f0fba2ad | 552 | return ret; |
924914ee MB |
553 | } |
554 | module_init(wm8776_modinit); | |
555 | ||
556 | static void __exit wm8776_exit(void) | |
557 | { | |
558 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
559 | i2c_del_driver(&wm8776_i2c_driver); | |
560 | #endif | |
561 | #if defined(CONFIG_SPI_MASTER) | |
562 | spi_unregister_driver(&wm8776_spi_driver); | |
563 | #endif | |
564 | } | |
565 | module_exit(wm8776_exit); | |
566 | ||
567 | MODULE_DESCRIPTION("ASoC WM8776 driver"); | |
568 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
569 | MODULE_LICENSE("GPL"); |