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Commit | Line | Data |
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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> | |
bb262767 | 22 | #include <linux/spi/spi.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
bd6d4177 MA |
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> | |
b5ab887e | 29 | #include <sound/tlv.h> |
bd6d4177 MA |
30 | #include <sound/initval.h> |
31 | ||
32 | #include "wm8711.h" | |
33 | ||
bd6d4177 MA |
34 | /* codec private data */ |
35 | struct wm8711_priv { | |
f0fba2ad | 36 | enum snd_soc_control_type bus_type; |
318b0b8d | 37 | u16 reg_cache[WM8711_CACHEREGNUM]; |
bd6d4177 MA |
38 | unsigned int sysclk; |
39 | }; | |
40 | ||
41 | /* | |
42 | * wm8711 register cache | |
43 | * We can't read the WM8711 register space when we are | |
44 | * using 2 wire for device control, so we cache them instead. | |
45 | * There is no point in caching the reset register | |
46 | */ | |
47 | static const u16 wm8711_reg[WM8711_CACHEREGNUM] = { | |
48 | 0x0079, 0x0079, 0x000a, 0x0008, | |
49 | 0x009f, 0x000a, 0x0000, 0x0000 | |
50 | }; | |
51 | ||
d97d2e35 | 52 | #define wm8711_reset(c) snd_soc_write(c, WM8711_RESET, 0) |
bd6d4177 | 53 | |
b5ab887e MB |
54 | static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); |
55 | ||
bd6d4177 MA |
56 | static const struct snd_kcontrol_new wm8711_snd_controls[] = { |
57 | ||
b5ab887e MB |
58 | SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V, |
59 | 0, 127, 0, out_tlv), | |
bd6d4177 MA |
60 | SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V, |
61 | 7, 1, 0), | |
62 | ||
63 | }; | |
64 | ||
bd6d4177 MA |
65 | /* Output Mixer */ |
66 | static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = { | |
67 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0), | |
68 | SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0), | |
69 | }; | |
70 | ||
71 | static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = { | |
72 | SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1, | |
73 | &wm8711_output_mixer_controls[0], | |
74 | ARRAY_SIZE(wm8711_output_mixer_controls)), | |
75 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1), | |
76 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
77 | SND_SOC_DAPM_OUTPUT("LHPOUT"), | |
78 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
79 | SND_SOC_DAPM_OUTPUT("RHPOUT"), | |
80 | }; | |
81 | ||
82 | static const struct snd_soc_dapm_route intercon[] = { | |
83 | /* output mixer */ | |
84 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, | |
85 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, | |
86 | ||
87 | /* outputs */ | |
88 | {"RHPOUT", NULL, "Output Mixer"}, | |
89 | {"ROUT", NULL, "Output Mixer"}, | |
90 | {"LHPOUT", NULL, "Output Mixer"}, | |
91 | {"LOUT", NULL, "Output Mixer"}, | |
92 | }; | |
93 | ||
94 | static int wm8711_add_widgets(struct snd_soc_codec *codec) | |
95 | { | |
96 | snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets, | |
97 | ARRAY_SIZE(wm8711_dapm_widgets)); | |
98 | ||
99 | snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); | |
100 | ||
bd6d4177 MA |
101 | return 0; |
102 | } | |
103 | ||
104 | struct _coeff_div { | |
105 | u32 mclk; | |
106 | u32 rate; | |
107 | u16 fs; | |
108 | u8 sr:4; | |
109 | u8 bosr:1; | |
110 | u8 usb:1; | |
111 | }; | |
112 | ||
113 | /* codec mclk clock divider coefficients */ | |
114 | static const struct _coeff_div coeff_div[] = { | |
115 | /* 48k */ | |
116 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, | |
117 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, | |
118 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, | |
119 | ||
120 | /* 32k */ | |
121 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, | |
122 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, | |
123 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, | |
124 | ||
125 | /* 8k */ | |
126 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, | |
127 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, | |
128 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, | |
129 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, | |
130 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, | |
131 | ||
132 | /* 96k */ | |
133 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, | |
134 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, | |
135 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, | |
136 | ||
137 | /* 44.1k */ | |
138 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, | |
139 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, | |
140 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, | |
141 | ||
142 | /* 88.2k */ | |
143 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, | |
144 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, | |
145 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, | |
146 | }; | |
147 | ||
148 | static inline int get_coeff(int mclk, int rate) | |
149 | { | |
150 | int i; | |
151 | ||
152 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
153 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
154 | return i; | |
155 | } | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static int wm8711_hw_params(struct snd_pcm_substream *substream, | |
160 | struct snd_pcm_hw_params *params, | |
161 | struct snd_soc_dai *dai) | |
162 | { | |
163 | struct snd_soc_codec *codec = dai->codec; | |
f0fba2ad | 164 | struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec); |
d97d2e35 | 165 | u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc; |
bd6d4177 MA |
166 | int i = get_coeff(wm8711->sysclk, params_rate(params)); |
167 | u16 srate = (coeff_div[i].sr << 2) | | |
168 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; | |
169 | ||
d97d2e35 | 170 | snd_soc_write(codec, WM8711_SRATE, srate); |
bd6d4177 MA |
171 | |
172 | /* bit size */ | |
173 | switch (params_format(params)) { | |
174 | case SNDRV_PCM_FORMAT_S16_LE: | |
175 | break; | |
176 | case SNDRV_PCM_FORMAT_S20_3LE: | |
177 | iface |= 0x0004; | |
178 | break; | |
179 | case SNDRV_PCM_FORMAT_S24_LE: | |
180 | iface |= 0x0008; | |
181 | break; | |
182 | } | |
183 | ||
d97d2e35 | 184 | snd_soc_write(codec, WM8711_IFACE, iface); |
bd6d4177 MA |
185 | return 0; |
186 | } | |
187 | ||
188 | static int wm8711_pcm_prepare(struct snd_pcm_substream *substream, | |
189 | struct snd_soc_dai *dai) | |
190 | { | |
191 | struct snd_soc_codec *codec = dai->codec; | |
192 | ||
193 | /* set active */ | |
d97d2e35 | 194 | snd_soc_write(codec, WM8711_ACTIVE, 0x0001); |
bd6d4177 MA |
195 | |
196 | return 0; | |
197 | } | |
198 | ||
199 | static void wm8711_shutdown(struct snd_pcm_substream *substream, | |
200 | struct snd_soc_dai *dai) | |
201 | { | |
202 | struct snd_soc_codec *codec = dai->codec; | |
203 | ||
204 | /* deactivate */ | |
205 | if (!codec->active) { | |
206 | udelay(50); | |
d97d2e35 | 207 | snd_soc_write(codec, WM8711_ACTIVE, 0x0); |
bd6d4177 MA |
208 | } |
209 | } | |
210 | ||
211 | static int wm8711_mute(struct snd_soc_dai *dai, int mute) | |
212 | { | |
213 | struct snd_soc_codec *codec = dai->codec; | |
d97d2e35 | 214 | u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7; |
bd6d4177 MA |
215 | |
216 | if (mute) | |
d97d2e35 | 217 | snd_soc_write(codec, WM8711_APDIGI, mute_reg | 0x8); |
bd6d4177 | 218 | else |
d97d2e35 | 219 | snd_soc_write(codec, WM8711_APDIGI, mute_reg); |
bd6d4177 MA |
220 | |
221 | return 0; | |
222 | } | |
223 | ||
224 | static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
225 | int clk_id, unsigned int freq, int dir) | |
226 | { | |
227 | struct snd_soc_codec *codec = codec_dai->codec; | |
f0fba2ad | 228 | struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec); |
bd6d4177 MA |
229 | |
230 | switch (freq) { | |
231 | case 11289600: | |
232 | case 12000000: | |
233 | case 12288000: | |
234 | case 16934400: | |
235 | case 18432000: | |
236 | wm8711->sysclk = freq; | |
237 | return 0; | |
238 | } | |
239 | return -EINVAL; | |
240 | } | |
241 | ||
242 | static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
243 | unsigned int fmt) | |
244 | { | |
245 | struct snd_soc_codec *codec = codec_dai->codec; | |
246 | u16 iface = 0; | |
247 | ||
248 | /* set master/slave audio interface */ | |
249 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
250 | case SND_SOC_DAIFMT_CBM_CFM: | |
251 | iface |= 0x0040; | |
252 | break; | |
253 | case SND_SOC_DAIFMT_CBS_CFS: | |
254 | break; | |
255 | default: | |
256 | return -EINVAL; | |
257 | } | |
258 | ||
259 | /* interface format */ | |
260 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
261 | case SND_SOC_DAIFMT_I2S: | |
262 | iface |= 0x0002; | |
263 | break; | |
264 | case SND_SOC_DAIFMT_RIGHT_J: | |
265 | break; | |
266 | case SND_SOC_DAIFMT_LEFT_J: | |
267 | iface |= 0x0001; | |
268 | break; | |
269 | case SND_SOC_DAIFMT_DSP_A: | |
270 | iface |= 0x0003; | |
271 | break; | |
272 | case SND_SOC_DAIFMT_DSP_B: | |
273 | iface |= 0x0013; | |
274 | break; | |
275 | default: | |
276 | return -EINVAL; | |
277 | } | |
278 | ||
279 | /* clock inversion */ | |
280 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
281 | case SND_SOC_DAIFMT_NB_NF: | |
282 | break; | |
283 | case SND_SOC_DAIFMT_IB_IF: | |
284 | iface |= 0x0090; | |
285 | break; | |
286 | case SND_SOC_DAIFMT_IB_NF: | |
287 | iface |= 0x0080; | |
288 | break; | |
289 | case SND_SOC_DAIFMT_NB_IF: | |
290 | iface |= 0x0010; | |
291 | break; | |
292 | default: | |
293 | return -EINVAL; | |
294 | } | |
295 | ||
296 | /* set iface */ | |
d97d2e35 | 297 | snd_soc_write(codec, WM8711_IFACE, iface); |
bd6d4177 MA |
298 | return 0; |
299 | } | |
300 | ||
301 | ||
302 | static int wm8711_set_bias_level(struct snd_soc_codec *codec, | |
303 | enum snd_soc_bias_level level) | |
304 | { | |
d97d2e35 | 305 | u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f; |
bd6d4177 MA |
306 | |
307 | switch (level) { | |
308 | case SND_SOC_BIAS_ON: | |
d97d2e35 | 309 | snd_soc_write(codec, WM8711_PWR, reg); |
bd6d4177 MA |
310 | break; |
311 | case SND_SOC_BIAS_PREPARE: | |
312 | break; | |
313 | case SND_SOC_BIAS_STANDBY: | |
d97d2e35 | 314 | snd_soc_write(codec, WM8711_PWR, reg | 0x0040); |
bd6d4177 MA |
315 | break; |
316 | case SND_SOC_BIAS_OFF: | |
d97d2e35 MB |
317 | snd_soc_write(codec, WM8711_ACTIVE, 0x0); |
318 | snd_soc_write(codec, WM8711_PWR, 0xffff); | |
bd6d4177 MA |
319 | break; |
320 | } | |
321 | codec->bias_level = level; | |
322 | return 0; | |
323 | } | |
324 | ||
431f7771 | 325 | #define WM8711_RATES SNDRV_PCM_RATE_8000_96000 |
bd6d4177 MA |
326 | |
327 | #define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
328 | SNDRV_PCM_FMTBIT_S24_LE) | |
329 | ||
330 | static struct snd_soc_dai_ops wm8711_ops = { | |
331 | .prepare = wm8711_pcm_prepare, | |
332 | .hw_params = wm8711_hw_params, | |
333 | .shutdown = wm8711_shutdown, | |
334 | .digital_mute = wm8711_mute, | |
335 | .set_sysclk = wm8711_set_dai_sysclk, | |
336 | .set_fmt = wm8711_set_dai_fmt, | |
337 | }; | |
338 | ||
f0fba2ad LG |
339 | static struct snd_soc_dai_driver wm8711_dai = { |
340 | .name = "wm8711-hifi", | |
bd6d4177 MA |
341 | .playback = { |
342 | .stream_name = "Playback", | |
343 | .channels_min = 1, | |
344 | .channels_max = 2, | |
345 | .rates = WM8711_RATES, | |
431f7771 MB |
346 | .formats = WM8711_FORMATS, |
347 | }, | |
bd6d4177 MA |
348 | .ops = &wm8711_ops, |
349 | }; | |
bd6d4177 | 350 | |
f0fba2ad | 351 | static int wm8711_suspend(struct snd_soc_codec *codec, pm_message_t state) |
bd6d4177 | 352 | { |
d97d2e35 | 353 | snd_soc_write(codec, WM8711_ACTIVE, 0x0); |
bd6d4177 MA |
354 | wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF); |
355 | return 0; | |
356 | } | |
357 | ||
f0fba2ad | 358 | static int wm8711_resume(struct snd_soc_codec *codec) |
bd6d4177 | 359 | { |
bd6d4177 MA |
360 | int i; |
361 | u8 data[2]; | |
362 | u16 *cache = codec->reg_cache; | |
363 | ||
364 | /* Sync reg_cache with the hardware */ | |
365 | for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) { | |
366 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
367 | data[1] = cache[i] & 0x00ff; | |
368 | codec->hw_write(codec->control_data, data, 2); | |
369 | } | |
370 | wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
29e189c2 | 371 | |
bd6d4177 MA |
372 | return 0; |
373 | } | |
374 | ||
f0fba2ad | 375 | static int wm8711_probe(struct snd_soc_codec *codec) |
bd6d4177 | 376 | { |
f0fba2ad LG |
377 | struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec); |
378 | int ret, reg; | |
bd6d4177 | 379 | |
f0fba2ad | 380 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8711->bus_type); |
d97d2e35 MB |
381 | if (ret < 0) { |
382 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
f0fba2ad | 383 | return ret; |
d97d2e35 MB |
384 | } |
385 | ||
318b0b8d | 386 | ret = wm8711_reset(codec); |
bd6d4177 | 387 | if (ret < 0) { |
318b0b8d | 388 | dev_err(codec->dev, "Failed to issue reset\n"); |
f0fba2ad | 389 | return ret; |
bd6d4177 | 390 | } |
bd6d4177 | 391 | |
318b0b8d MB |
392 | wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
393 | ||
394 | /* Latch the update bits */ | |
d97d2e35 MB |
395 | reg = snd_soc_read(codec, WM8711_LOUT1V); |
396 | snd_soc_write(codec, WM8711_LOUT1V, reg | 0x0100); | |
397 | reg = snd_soc_read(codec, WM8711_ROUT1V); | |
398 | snd_soc_write(codec, WM8711_ROUT1V, reg | 0x0100); | |
318b0b8d | 399 | |
f0fba2ad LG |
400 | snd_soc_add_controls(codec, wm8711_snd_controls, |
401 | ARRAY_SIZE(wm8711_snd_controls)); | |
402 | wm8711_add_widgets(codec); | |
d97d2e35 | 403 | |
d97d2e35 | 404 | return ret; |
f0fba2ad | 405 | |
bd6d4177 MA |
406 | } |
407 | ||
f0fba2ad LG |
408 | /* power down chip */ |
409 | static int wm8711_remove(struct snd_soc_codec *codec) | |
bd6d4177 | 410 | { |
f0fba2ad LG |
411 | wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF); |
412 | return 0; | |
bd6d4177 MA |
413 | } |
414 | ||
f0fba2ad LG |
415 | static struct snd_soc_codec_driver soc_codec_dev_wm8711 = { |
416 | .probe = wm8711_probe, | |
417 | .remove = wm8711_remove, | |
418 | .suspend = wm8711_suspend, | |
419 | .resume = wm8711_resume, | |
420 | .set_bias_level = wm8711_set_bias_level, | |
e5eec34c | 421 | .reg_cache_size = ARRAY_SIZE(wm8711_reg), |
f0fba2ad LG |
422 | .reg_word_size = sizeof(u16), |
423 | .reg_cache_default = wm8711_reg, | |
424 | }; | |
425 | ||
08aff8cd MB |
426 | #if defined(CONFIG_SPI_MASTER) |
427 | static int __devinit wm8711_spi_probe(struct spi_device *spi) | |
428 | { | |
08aff8cd | 429 | struct wm8711_priv *wm8711; |
f0fba2ad | 430 | int ret; |
08aff8cd MB |
431 | |
432 | wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL); | |
433 | if (wm8711 == NULL) | |
434 | return -ENOMEM; | |
435 | ||
f0fba2ad | 436 | spi_set_drvdata(spi, wm8711); |
f0fba2ad | 437 | wm8711->bus_type = SND_SOC_SPI; |
08aff8cd | 438 | |
f0fba2ad LG |
439 | ret = snd_soc_register_codec(&spi->dev, |
440 | &soc_codec_dev_wm8711, &wm8711_dai, 1); | |
441 | if (ret < 0) | |
442 | kfree(wm8711); | |
443 | return ret; | |
08aff8cd MB |
444 | } |
445 | ||
446 | static int __devexit wm8711_spi_remove(struct spi_device *spi) | |
447 | { | |
f0fba2ad LG |
448 | snd_soc_unregister_codec(&spi->dev); |
449 | kfree(spi_get_drvdata(spi)); | |
08aff8cd MB |
450 | return 0; |
451 | } | |
452 | ||
08aff8cd MB |
453 | static struct spi_driver wm8711_spi_driver = { |
454 | .driver = { | |
f0fba2ad | 455 | .name = "wm8711-codec", |
08aff8cd MB |
456 | .owner = THIS_MODULE, |
457 | }, | |
458 | .probe = wm8711_spi_probe, | |
08aff8cd MB |
459 | .remove = __devexit_p(wm8711_spi_remove), |
460 | }; | |
461 | #endif /* CONFIG_SPI_MASTER */ | |
462 | ||
318b0b8d | 463 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
f0fba2ad | 464 | static __devinit int wm8711_i2c_probe(struct i2c_client *client, |
318b0b8d | 465 | const struct i2c_device_id *id) |
bd6d4177 | 466 | { |
bd6d4177 | 467 | struct wm8711_priv *wm8711; |
f0fba2ad | 468 | int ret; |
bd6d4177 MA |
469 | |
470 | wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL); | |
318b0b8d | 471 | if (wm8711 == NULL) |
bd6d4177 | 472 | return -ENOMEM; |
bd6d4177 | 473 | |
f0fba2ad | 474 | i2c_set_clientdata(client, wm8711); |
f0fba2ad | 475 | wm8711->bus_type = SND_SOC_I2C; |
bd6d4177 | 476 | |
f0fba2ad LG |
477 | ret = snd_soc_register_codec(&client->dev, |
478 | &soc_codec_dev_wm8711, &wm8711_dai, 1); | |
479 | if (ret < 0) | |
480 | kfree(wm8711); | |
481 | return ret; | |
318b0b8d | 482 | } |
bd6d4177 | 483 | |
318b0b8d MB |
484 | static __devexit int wm8711_i2c_remove(struct i2c_client *client) |
485 | { | |
f0fba2ad LG |
486 | snd_soc_unregister_codec(&client->dev); |
487 | kfree(i2c_get_clientdata(client)); | |
bd6d4177 MA |
488 | return 0; |
489 | } | |
490 | ||
318b0b8d MB |
491 | static const struct i2c_device_id wm8711_i2c_id[] = { |
492 | { "wm8711", 0 }, | |
493 | { } | |
bd6d4177 | 494 | }; |
318b0b8d MB |
495 | MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id); |
496 | ||
497 | static struct i2c_driver wm8711_i2c_driver = { | |
498 | .driver = { | |
f0fba2ad | 499 | .name = "wm8711-codec", |
318b0b8d MB |
500 | .owner = THIS_MODULE, |
501 | }, | |
502 | .probe = wm8711_i2c_probe, | |
503 | .remove = __devexit_p(wm8711_i2c_remove), | |
504 | .id_table = wm8711_i2c_id, | |
505 | }; | |
506 | #endif | |
bd6d4177 MA |
507 | |
508 | static int __init wm8711_modinit(void) | |
509 | { | |
318b0b8d MB |
510 | int ret; |
511 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
512 | ret = i2c_add_driver(&wm8711_i2c_driver); | |
513 | if (ret != 0) { | |
514 | printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n", | |
515 | ret); | |
516 | } | |
08aff8cd MB |
517 | #endif |
518 | #if defined(CONFIG_SPI_MASTER) | |
bb262767 | 519 | ret = spi_register_driver(&wm8711_spi_driver); |
08aff8cd | 520 | if (ret != 0) { |
bb262767 | 521 | printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n", |
08aff8cd MB |
522 | ret); |
523 | } | |
318b0b8d MB |
524 | #endif |
525 | return 0; | |
bd6d4177 MA |
526 | } |
527 | module_init(wm8711_modinit); | |
528 | ||
529 | static void __exit wm8711_exit(void) | |
530 | { | |
318b0b8d MB |
531 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
532 | i2c_del_driver(&wm8711_i2c_driver); | |
533 | #endif | |
08aff8cd | 534 | #if defined(CONFIG_SPI_MASTER) |
bb262767 | 535 | spi_unregister_driver(&wm8711_spi_driver); |
08aff8cd | 536 | #endif |
bd6d4177 MA |
537 | } |
538 | module_exit(wm8711_exit); | |
539 | ||
540 | MODULE_DESCRIPTION("ASoC WM8711 driver"); | |
541 | MODULE_AUTHOR("Mike Arthur"); | |
542 | MODULE_LICENSE("GPL"); |