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40e0aa64 RP |
1 | /* |
2 | * wm8731.c -- WM8731 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2005 Openedhand Ltd. | |
5 | * | |
6 | * Author: Richard Purdie <richard@openedhand.com> | |
7 | * | |
8 | * Based on wm8753.c by Liam Girdwood | |
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> | |
d2a40355 | 22 | #include <linux/spi/spi.h> |
40e0aa64 RP |
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 | ||
30 | #include "wm8731.h" | |
31 | ||
5998102b | 32 | static struct snd_soc_codec *wm8731_codec; |
40e0aa64 RP |
33 | struct snd_soc_codec_device soc_codec_dev_wm8731; |
34 | ||
b36d61d4 FM |
35 | /* codec private data */ |
36 | struct wm8731_priv { | |
5998102b MB |
37 | struct snd_soc_codec codec; |
38 | u16 reg_cache[WM8731_CACHEREGNUM]; | |
b36d61d4 FM |
39 | unsigned int sysclk; |
40 | }; | |
41 | ||
a8035c8f MB |
42 | #ifdef CONFIG_SPI_MASTER |
43 | static int wm8731_spi_write(struct spi_device *spi, const char *data, int len); | |
a8035c8f MB |
44 | #endif |
45 | ||
40e0aa64 RP |
46 | /* |
47 | * wm8731 register cache | |
48 | * We can't read the WM8731 register space when we are | |
49 | * using 2 wire for device control, so we cache them instead. | |
50 | * There is no point in caching the reset register | |
51 | */ | |
52 | static const u16 wm8731_reg[WM8731_CACHEREGNUM] = { | |
53 | 0x0097, 0x0097, 0x0079, 0x0079, | |
54 | 0x000a, 0x0008, 0x009f, 0x000a, | |
55 | 0x0000, 0x0000 | |
56 | }; | |
57 | ||
40e0aa64 RP |
58 | /* |
59 | * read wm8731 register cache | |
60 | */ | |
61 | static inline unsigned int wm8731_read_reg_cache(struct snd_soc_codec *codec, | |
62 | unsigned int reg) | |
63 | { | |
64 | u16 *cache = codec->reg_cache; | |
65 | if (reg == WM8731_RESET) | |
66 | return 0; | |
67 | if (reg >= WM8731_CACHEREGNUM) | |
68 | return -1; | |
69 | return cache[reg]; | |
70 | } | |
71 | ||
72 | /* | |
73 | * write wm8731 register cache | |
74 | */ | |
75 | static inline void wm8731_write_reg_cache(struct snd_soc_codec *codec, | |
76 | u16 reg, unsigned int value) | |
77 | { | |
78 | u16 *cache = codec->reg_cache; | |
79 | if (reg >= WM8731_CACHEREGNUM) | |
80 | return; | |
81 | cache[reg] = value; | |
82 | } | |
83 | ||
84 | /* | |
85 | * write to the WM8731 register space | |
86 | */ | |
87 | static int wm8731_write(struct snd_soc_codec *codec, unsigned int reg, | |
88 | unsigned int value) | |
89 | { | |
90 | u8 data[2]; | |
91 | ||
92 | /* data is | |
93 | * D15..D9 WM8731 register offset | |
94 | * D8...D0 register data | |
95 | */ | |
96 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); | |
97 | data[1] = value & 0x00ff; | |
98 | ||
d454aee9 | 99 | wm8731_write_reg_cache(codec, reg, value); |
40e0aa64 RP |
100 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
101 | return 0; | |
102 | else | |
103 | return -EIO; | |
104 | } | |
105 | ||
106 | #define wm8731_reset(c) wm8731_write(c, WM8731_RESET, 0) | |
107 | ||
108 | static const char *wm8731_input_select[] = {"Line In", "Mic"}; | |
109 | static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; | |
110 | ||
111 | static const struct soc_enum wm8731_enum[] = { | |
112 | SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select), | |
113 | SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph), | |
114 | }; | |
115 | ||
116 | static const struct snd_kcontrol_new wm8731_snd_controls[] = { | |
117 | ||
bd903b6e LG |
118 | SOC_DOUBLE_R("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V, |
119 | 0, 127, 0), | |
120 | SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V, | |
121 | 7, 1, 0), | |
40e0aa64 RP |
122 | |
123 | SOC_DOUBLE_R("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0), | |
124 | SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), | |
125 | ||
126 | SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0), | |
127 | SOC_SINGLE("Capture Mic Switch", WM8731_APANA, 1, 1, 1), | |
128 | ||
129 | SOC_SINGLE("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1), | |
130 | ||
131 | SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), | |
132 | SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), | |
133 | ||
134 | SOC_ENUM("Playback De-emphasis", wm8731_enum[1]), | |
135 | }; | |
136 | ||
40e0aa64 RP |
137 | /* Output Mixer */ |
138 | static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = { | |
139 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0), | |
140 | SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0), | |
141 | SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), | |
142 | }; | |
143 | ||
144 | /* Input mux */ | |
145 | static const struct snd_kcontrol_new wm8731_input_mux_controls = | |
146 | SOC_DAPM_ENUM("Input Select", wm8731_enum[0]); | |
147 | ||
148 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { | |
149 | SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1, | |
150 | &wm8731_output_mixer_controls[0], | |
151 | ARRAY_SIZE(wm8731_output_mixer_controls)), | |
152 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1), | |
153 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
154 | SND_SOC_DAPM_OUTPUT("LHPOUT"), | |
155 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
156 | SND_SOC_DAPM_OUTPUT("RHPOUT"), | |
157 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1), | |
158 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls), | |
159 | SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0), | |
160 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1), | |
161 | SND_SOC_DAPM_INPUT("MICIN"), | |
162 | SND_SOC_DAPM_INPUT("RLINEIN"), | |
163 | SND_SOC_DAPM_INPUT("LLINEIN"), | |
164 | }; | |
165 | ||
a65f0568 | 166 | static const struct snd_soc_dapm_route intercon[] = { |
40e0aa64 RP |
167 | /* output mixer */ |
168 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, | |
169 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, | |
170 | {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, | |
171 | ||
172 | /* outputs */ | |
173 | {"RHPOUT", NULL, "Output Mixer"}, | |
174 | {"ROUT", NULL, "Output Mixer"}, | |
175 | {"LHPOUT", NULL, "Output Mixer"}, | |
176 | {"LOUT", NULL, "Output Mixer"}, | |
177 | ||
178 | /* input mux */ | |
179 | {"Input Mux", "Line In", "Line Input"}, | |
180 | {"Input Mux", "Mic", "Mic Bias"}, | |
181 | {"ADC", NULL, "Input Mux"}, | |
182 | ||
183 | /* inputs */ | |
184 | {"Line Input", NULL, "LLINEIN"}, | |
185 | {"Line Input", NULL, "RLINEIN"}, | |
186 | {"Mic Bias", NULL, "MICIN"}, | |
40e0aa64 RP |
187 | }; |
188 | ||
189 | static int wm8731_add_widgets(struct snd_soc_codec *codec) | |
190 | { | |
a65f0568 MB |
191 | snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets, |
192 | ARRAY_SIZE(wm8731_dapm_widgets)); | |
40e0aa64 | 193 | |
a65f0568 | 194 | snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); |
40e0aa64 RP |
195 | |
196 | snd_soc_dapm_new_widgets(codec); | |
197 | return 0; | |
198 | } | |
199 | ||
200 | struct _coeff_div { | |
201 | u32 mclk; | |
202 | u32 rate; | |
203 | u16 fs; | |
204 | u8 sr:4; | |
205 | u8 bosr:1; | |
206 | u8 usb:1; | |
207 | }; | |
208 | ||
209 | /* codec mclk clock divider coefficients */ | |
210 | static const struct _coeff_div coeff_div[] = { | |
211 | /* 48k */ | |
212 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, | |
213 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, | |
214 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, | |
215 | ||
216 | /* 32k */ | |
217 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, | |
218 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, | |
298a2c75 | 219 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, |
40e0aa64 RP |
220 | |
221 | /* 8k */ | |
222 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, | |
223 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, | |
224 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, | |
225 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, | |
226 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, | |
227 | ||
228 | /* 96k */ | |
229 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, | |
230 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, | |
231 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, | |
232 | ||
233 | /* 44.1k */ | |
234 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, | |
235 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, | |
236 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, | |
237 | ||
238 | /* 88.2k */ | |
239 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, | |
240 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, | |
241 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, | |
242 | }; | |
243 | ||
244 | static inline int get_coeff(int mclk, int rate) | |
245 | { | |
246 | int i; | |
247 | ||
248 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
249 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
250 | return i; | |
251 | } | |
252 | return 0; | |
253 | } | |
254 | ||
b36d61d4 | 255 | static int wm8731_hw_params(struct snd_pcm_substream *substream, |
dee89c4d MB |
256 | struct snd_pcm_hw_params *params, |
257 | struct snd_soc_dai *dai) | |
40e0aa64 | 258 | { |
b36d61d4 FM |
259 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
260 | struct snd_soc_device *socdev = rtd->socdev; | |
6627a653 | 261 | struct snd_soc_codec *codec = socdev->card->codec; |
b36d61d4 FM |
262 | struct wm8731_priv *wm8731 = codec->private_data; |
263 | u16 iface = wm8731_read_reg_cache(codec, WM8731_IFACE) & 0xfff3; | |
264 | int i = get_coeff(wm8731->sysclk, params_rate(params)); | |
265 | u16 srate = (coeff_div[i].sr << 2) | | |
266 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; | |
40e0aa64 | 267 | |
b36d61d4 FM |
268 | wm8731_write(codec, WM8731_SRATE, srate); |
269 | ||
270 | /* bit size */ | |
271 | switch (params_format(params)) { | |
272 | case SNDRV_PCM_FORMAT_S16_LE: | |
273 | break; | |
274 | case SNDRV_PCM_FORMAT_S20_3LE: | |
275 | iface |= 0x0004; | |
276 | break; | |
277 | case SNDRV_PCM_FORMAT_S24_LE: | |
278 | iface |= 0x0008; | |
279 | break; | |
280 | } | |
40e0aa64 | 281 | |
b36d61d4 FM |
282 | wm8731_write(codec, WM8731_IFACE, iface); |
283 | return 0; | |
40e0aa64 RP |
284 | } |
285 | ||
dee89c4d MB |
286 | static int wm8731_pcm_prepare(struct snd_pcm_substream *substream, |
287 | struct snd_soc_dai *dai) | |
40e0aa64 RP |
288 | { |
289 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
290 | struct snd_soc_device *socdev = rtd->socdev; | |
6627a653 | 291 | struct snd_soc_codec *codec = socdev->card->codec; |
b36d61d4 FM |
292 | |
293 | /* set active */ | |
294 | wm8731_write(codec, WM8731_ACTIVE, 0x0001); | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
dee89c4d MB |
299 | static void wm8731_shutdown(struct snd_pcm_substream *substream, |
300 | struct snd_soc_dai *dai) | |
b36d61d4 FM |
301 | { |
302 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
303 | struct snd_soc_device *socdev = rtd->socdev; | |
6627a653 | 304 | struct snd_soc_codec *codec = socdev->card->codec; |
b36d61d4 FM |
305 | |
306 | /* deactivate */ | |
307 | if (!codec->active) { | |
308 | udelay(50); | |
309 | wm8731_write(codec, WM8731_ACTIVE, 0x0); | |
310 | } | |
311 | } | |
312 | ||
e550e17f | 313 | static int wm8731_mute(struct snd_soc_dai *dai, int mute) |
b36d61d4 FM |
314 | { |
315 | struct snd_soc_codec *codec = dai->codec; | |
316 | u16 mute_reg = wm8731_read_reg_cache(codec, WM8731_APDIGI) & 0xfff7; | |
317 | ||
318 | if (mute) | |
319 | wm8731_write(codec, WM8731_APDIGI, mute_reg | 0x8); | |
320 | else | |
321 | wm8731_write(codec, WM8731_APDIGI, mute_reg); | |
322 | return 0; | |
323 | } | |
324 | ||
e550e17f | 325 | static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
b36d61d4 FM |
326 | int clk_id, unsigned int freq, int dir) |
327 | { | |
328 | struct snd_soc_codec *codec = codec_dai->codec; | |
329 | struct wm8731_priv *wm8731 = codec->private_data; | |
330 | ||
331 | switch (freq) { | |
332 | case 11289600: | |
333 | case 12000000: | |
334 | case 12288000: | |
335 | case 16934400: | |
336 | case 18432000: | |
337 | wm8731->sysclk = freq; | |
338 | return 0; | |
339 | } | |
340 | return -EINVAL; | |
341 | } | |
342 | ||
343 | ||
e550e17f | 344 | static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, |
b36d61d4 FM |
345 | unsigned int fmt) |
346 | { | |
347 | struct snd_soc_codec *codec = codec_dai->codec; | |
348 | u16 iface = 0; | |
40e0aa64 RP |
349 | |
350 | /* set master/slave audio interface */ | |
b36d61d4 | 351 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
40e0aa64 RP |
352 | case SND_SOC_DAIFMT_CBM_CFM: |
353 | iface |= 0x0040; | |
354 | break; | |
355 | case SND_SOC_DAIFMT_CBS_CFS: | |
356 | break; | |
b36d61d4 FM |
357 | default: |
358 | return -EINVAL; | |
40e0aa64 | 359 | } |
40e0aa64 RP |
360 | |
361 | /* interface format */ | |
b36d61d4 | 362 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
40e0aa64 RP |
363 | case SND_SOC_DAIFMT_I2S: |
364 | iface |= 0x0002; | |
365 | break; | |
366 | case SND_SOC_DAIFMT_RIGHT_J: | |
367 | break; | |
368 | case SND_SOC_DAIFMT_LEFT_J: | |
369 | iface |= 0x0001; | |
370 | break; | |
371 | case SND_SOC_DAIFMT_DSP_A: | |
372 | iface |= 0x0003; | |
373 | break; | |
374 | case SND_SOC_DAIFMT_DSP_B: | |
375 | iface |= 0x0013; | |
376 | break; | |
b36d61d4 FM |
377 | default: |
378 | return -EINVAL; | |
40e0aa64 RP |
379 | } |
380 | ||
381 | /* clock inversion */ | |
b36d61d4 | 382 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
40e0aa64 RP |
383 | case SND_SOC_DAIFMT_NB_NF: |
384 | break; | |
385 | case SND_SOC_DAIFMT_IB_IF: | |
386 | iface |= 0x0090; | |
387 | break; | |
388 | case SND_SOC_DAIFMT_IB_NF: | |
389 | iface |= 0x0080; | |
390 | break; | |
391 | case SND_SOC_DAIFMT_NB_IF: | |
392 | iface |= 0x0010; | |
393 | break; | |
b36d61d4 FM |
394 | default: |
395 | return -EINVAL; | |
40e0aa64 RP |
396 | } |
397 | ||
398 | /* set iface */ | |
399 | wm8731_write(codec, WM8731_IFACE, iface); | |
40e0aa64 RP |
400 | return 0; |
401 | } | |
402 | ||
0be9898a MB |
403 | static int wm8731_set_bias_level(struct snd_soc_codec *codec, |
404 | enum snd_soc_bias_level level) | |
40e0aa64 | 405 | { |
22d22ee5 | 406 | u16 reg; |
40e0aa64 | 407 | |
0be9898a MB |
408 | switch (level) { |
409 | case SND_SOC_BIAS_ON: | |
40e0aa64 | 410 | break; |
0be9898a | 411 | case SND_SOC_BIAS_PREPARE: |
40e0aa64 | 412 | break; |
0be9898a | 413 | case SND_SOC_BIAS_STANDBY: |
22d22ee5 MB |
414 | /* Clear PWROFF, gate CLKOUT, everything else as-is */ |
415 | reg = wm8731_read_reg_cache(codec, WM8731_PWR) & 0xff7f; | |
40e0aa64 RP |
416 | wm8731_write(codec, WM8731_PWR, reg | 0x0040); |
417 | break; | |
0be9898a | 418 | case SND_SOC_BIAS_OFF: |
40e0aa64 RP |
419 | wm8731_write(codec, WM8731_ACTIVE, 0x0); |
420 | wm8731_write(codec, WM8731_PWR, 0xffff); | |
421 | break; | |
422 | } | |
0be9898a | 423 | codec->bias_level = level; |
40e0aa64 RP |
424 | return 0; |
425 | } | |
426 | ||
b36d61d4 FM |
427 | #define WM8731_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
428 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
429 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
430 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ | |
431 | SNDRV_PCM_RATE_96000) | |
432 | ||
433 | #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
434 | SNDRV_PCM_FMTBIT_S24_LE) | |
435 | ||
6335d055 EM |
436 | static struct snd_soc_dai_ops wm8731_dai_ops = { |
437 | .prepare = wm8731_pcm_prepare, | |
438 | .hw_params = wm8731_hw_params, | |
439 | .shutdown = wm8731_shutdown, | |
440 | .digital_mute = wm8731_mute, | |
441 | .set_sysclk = wm8731_set_dai_sysclk, | |
442 | .set_fmt = wm8731_set_dai_fmt, | |
443 | }; | |
444 | ||
e550e17f | 445 | struct snd_soc_dai wm8731_dai = { |
40e0aa64 RP |
446 | .name = "WM8731", |
447 | .playback = { | |
448 | .stream_name = "Playback", | |
449 | .channels_min = 1, | |
450 | .channels_max = 2, | |
b36d61d4 FM |
451 | .rates = WM8731_RATES, |
452 | .formats = WM8731_FORMATS,}, | |
40e0aa64 RP |
453 | .capture = { |
454 | .stream_name = "Capture", | |
455 | .channels_min = 1, | |
456 | .channels_max = 2, | |
b36d61d4 FM |
457 | .rates = WM8731_RATES, |
458 | .formats = WM8731_FORMATS,}, | |
6335d055 | 459 | .ops = &wm8731_dai_ops, |
40e0aa64 RP |
460 | }; |
461 | EXPORT_SYMBOL_GPL(wm8731_dai); | |
462 | ||
b3b50b3f | 463 | #ifdef CONFIG_PM |
40e0aa64 RP |
464 | static int wm8731_suspend(struct platform_device *pdev, pm_message_t state) |
465 | { | |
466 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 467 | struct snd_soc_codec *codec = socdev->card->codec; |
40e0aa64 RP |
468 | |
469 | wm8731_write(codec, WM8731_ACTIVE, 0x0); | |
0be9898a | 470 | wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); |
40e0aa64 RP |
471 | return 0; |
472 | } | |
473 | ||
474 | static int wm8731_resume(struct platform_device *pdev) | |
475 | { | |
476 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
6627a653 | 477 | struct snd_soc_codec *codec = socdev->card->codec; |
40e0aa64 RP |
478 | int i; |
479 | u8 data[2]; | |
480 | u16 *cache = codec->reg_cache; | |
481 | ||
482 | /* Sync reg_cache with the hardware */ | |
483 | for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) { | |
484 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
485 | data[1] = cache[i] & 0x00ff; | |
486 | codec->hw_write(codec->control_data, data, 2); | |
487 | } | |
0be9898a MB |
488 | wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
489 | wm8731_set_bias_level(codec, codec->suspend_bias_level); | |
40e0aa64 RP |
490 | return 0; |
491 | } | |
b3b50b3f MB |
492 | #else |
493 | #define wm8731_suspend NULL | |
494 | #define wm8731_resume NULL | |
495 | #endif | |
40e0aa64 | 496 | |
5998102b | 497 | static int wm8731_probe(struct platform_device *pdev) |
40e0aa64 | 498 | { |
5998102b MB |
499 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
500 | struct snd_soc_codec *codec; | |
501 | int ret = 0; | |
40e0aa64 | 502 | |
5998102b MB |
503 | if (wm8731_codec == NULL) { |
504 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
505 | return -ENODEV; | |
506 | } | |
40e0aa64 | 507 | |
5998102b MB |
508 | socdev->card->codec = wm8731_codec; |
509 | codec = wm8731_codec; | |
40e0aa64 RP |
510 | |
511 | /* register pcms */ | |
512 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
513 | if (ret < 0) { | |
5998102b | 514 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); |
e35115a5 | 515 | goto pcm_err; |
40e0aa64 RP |
516 | } |
517 | ||
3e8e1952 | 518 | snd_soc_add_controls(codec, wm8731_snd_controls, |
5998102b | 519 | ARRAY_SIZE(wm8731_snd_controls)); |
40e0aa64 | 520 | wm8731_add_widgets(codec); |
968a6025 | 521 | ret = snd_soc_init_card(socdev); |
40e0aa64 | 522 | if (ret < 0) { |
5998102b | 523 | dev_err(codec->dev, "failed to register card: %d\n", ret); |
e35115a5 | 524 | goto card_err; |
40e0aa64 RP |
525 | } |
526 | ||
527 | return ret; | |
e35115a5 LG |
528 | |
529 | card_err: | |
530 | snd_soc_free_pcms(socdev); | |
531 | snd_soc_dapm_free(socdev); | |
532 | pcm_err: | |
40e0aa64 RP |
533 | return ret; |
534 | } | |
535 | ||
536 | /* power down chip */ | |
537 | static int wm8731_remove(struct platform_device *pdev) | |
538 | { | |
539 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
40e0aa64 RP |
540 | |
541 | snd_soc_free_pcms(socdev); | |
542 | snd_soc_dapm_free(socdev); | |
40e0aa64 RP |
543 | |
544 | return 0; | |
545 | } | |
546 | ||
547 | struct snd_soc_codec_device soc_codec_dev_wm8731 = { | |
548 | .probe = wm8731_probe, | |
549 | .remove = wm8731_remove, | |
550 | .suspend = wm8731_suspend, | |
551 | .resume = wm8731_resume, | |
552 | }; | |
40e0aa64 RP |
553 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731); |
554 | ||
5998102b | 555 | static int wm8731_register(struct wm8731_priv *wm8731) |
a8035c8f | 556 | { |
a8035c8f | 557 | int ret; |
5998102b MB |
558 | struct snd_soc_codec *codec = &wm8731->codec; |
559 | u16 reg; | |
a8035c8f | 560 | |
5998102b MB |
561 | if (wm8731_codec) { |
562 | dev_err(codec->dev, "Another WM8731 is registered\n"); | |
fe5422fc MB |
563 | ret = -EINVAL; |
564 | goto err; | |
5998102b | 565 | } |
a8035c8f | 566 | |
5998102b MB |
567 | mutex_init(&codec->mutex); |
568 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
569 | INIT_LIST_HEAD(&codec->dapm_paths); | |
a8035c8f | 570 | |
5998102b MB |
571 | codec->private_data = wm8731; |
572 | codec->name = "WM8731"; | |
573 | codec->owner = THIS_MODULE; | |
574 | codec->read = wm8731_read_reg_cache; | |
575 | codec->write = wm8731_write; | |
576 | codec->bias_level = SND_SOC_BIAS_OFF; | |
577 | codec->set_bias_level = wm8731_set_bias_level; | |
578 | codec->dai = &wm8731_dai; | |
579 | codec->num_dai = 1; | |
580 | codec->reg_cache_size = WM8731_CACHEREGNUM; | |
581 | codec->reg_cache = &wm8731->reg_cache; | |
582 | ||
583 | memcpy(codec->reg_cache, wm8731_reg, sizeof(wm8731_reg)); | |
584 | ||
519cf2df MB |
585 | ret = wm8731_reset(codec); |
586 | if (ret < 0) { | |
fe5422fc MB |
587 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); |
588 | goto err; | |
519cf2df MB |
589 | } |
590 | ||
5998102b MB |
591 | wm8731_dai.dev = codec->dev; |
592 | ||
5998102b MB |
593 | wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
594 | ||
595 | /* Latch the update bits */ | |
596 | reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V); | |
597 | wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100); | |
598 | reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V); | |
599 | wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100); | |
600 | reg = wm8731_read_reg_cache(codec, WM8731_LINVOL); | |
601 | wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100); | |
602 | reg = wm8731_read_reg_cache(codec, WM8731_RINVOL); | |
603 | wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100); | |
604 | ||
ce3bdaa8 MB |
605 | /* Disable bypass path by default */ |
606 | reg = wm8731_read_reg_cache(codec, WM8731_APANA); | |
607 | wm8731_write(codec, WM8731_APANA, reg & ~0x4); | |
608 | ||
5998102b MB |
609 | wm8731_codec = codec; |
610 | ||
611 | ret = snd_soc_register_codec(codec); | |
612 | if (ret != 0) { | |
613 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
fe5422fc | 614 | goto err; |
5998102b MB |
615 | } |
616 | ||
617 | ret = snd_soc_register_dai(&wm8731_dai); | |
618 | if (ret != 0) { | |
619 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
620 | snd_soc_unregister_codec(codec); | |
fe5422fc | 621 | goto err_codec; |
5998102b | 622 | } |
a8035c8f | 623 | |
a8035c8f | 624 | return 0; |
fe5422fc MB |
625 | |
626 | err_codec: | |
627 | snd_soc_unregister_codec(codec); | |
628 | err: | |
629 | kfree(wm8731); | |
630 | return ret; | |
a8035c8f MB |
631 | } |
632 | ||
5998102b MB |
633 | static void wm8731_unregister(struct wm8731_priv *wm8731) |
634 | { | |
635 | wm8731_set_bias_level(&wm8731->codec, SND_SOC_BIAS_OFF); | |
636 | snd_soc_unregister_dai(&wm8731_dai); | |
637 | snd_soc_unregister_codec(&wm8731->codec); | |
638 | kfree(wm8731); | |
639 | wm8731_codec = NULL; | |
640 | } | |
a8035c8f | 641 | |
5998102b | 642 | #if defined(CONFIG_SPI_MASTER) |
a8035c8f MB |
643 | static int wm8731_spi_write(struct spi_device *spi, const char *data, int len) |
644 | { | |
645 | struct spi_transfer t; | |
646 | struct spi_message m; | |
647 | u8 msg[2]; | |
648 | ||
649 | if (len <= 0) | |
650 | return 0; | |
651 | ||
652 | msg[0] = data[0]; | |
653 | msg[1] = data[1]; | |
654 | ||
655 | spi_message_init(&m); | |
656 | memset(&t, 0, (sizeof t)); | |
657 | ||
658 | t.tx_buf = &msg[0]; | |
659 | t.len = len; | |
660 | ||
661 | spi_message_add_tail(&t, &m); | |
662 | spi_sync(spi, &m); | |
663 | ||
664 | return len; | |
665 | } | |
5998102b MB |
666 | |
667 | static int __devinit wm8731_spi_probe(struct spi_device *spi) | |
668 | { | |
669 | struct snd_soc_codec *codec; | |
670 | struct wm8731_priv *wm8731; | |
671 | ||
672 | wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); | |
673 | if (wm8731 == NULL) | |
674 | return -ENOMEM; | |
675 | ||
676 | codec = &wm8731->codec; | |
677 | codec->control_data = spi; | |
678 | codec->hw_write = (hw_write_t)wm8731_spi_write; | |
679 | codec->dev = &spi->dev; | |
680 | ||
ae31c1fb | 681 | dev_set_drvdata(&spi->dev, wm8731); |
93b760b7 | 682 | |
5998102b MB |
683 | return wm8731_register(wm8731); |
684 | } | |
685 | ||
686 | static int __devexit wm8731_spi_remove(struct spi_device *spi) | |
687 | { | |
ae31c1fb | 688 | struct wm8731_priv *wm8731 = dev_get_drvdata(&spi->dev); |
93b760b7 MB |
689 | |
690 | wm8731_unregister(wm8731); | |
691 | ||
5998102b MB |
692 | return 0; |
693 | } | |
694 | ||
b3b50b3f MB |
695 | #ifdef CONFIG_PM |
696 | static int wm8731_spi_suspend(struct spi_device *spi, pm_message_t msg) | |
697 | { | |
698 | return snd_soc_suspend_device(&spi->dev); | |
699 | } | |
700 | ||
701 | static int wm8731_spi_resume(struct spi_device *spi) | |
702 | { | |
703 | return snd_soc_resume_device(&spi->dev); | |
704 | } | |
705 | #else | |
706 | #define wm8731_spi_suspend NULL | |
707 | #define wm8731_spi_resume NULL | |
708 | #endif | |
709 | ||
5998102b MB |
710 | static struct spi_driver wm8731_spi_driver = { |
711 | .driver = { | |
712 | .name = "wm8731", | |
713 | .bus = &spi_bus_type, | |
714 | .owner = THIS_MODULE, | |
715 | }, | |
716 | .probe = wm8731_spi_probe, | |
b3b50b3f MB |
717 | .suspend = wm8731_spi_suspend, |
718 | .resume = wm8731_spi_resume, | |
5998102b MB |
719 | .remove = __devexit_p(wm8731_spi_remove), |
720 | }; | |
a8035c8f MB |
721 | #endif /* CONFIG_SPI_MASTER */ |
722 | ||
723 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
c6f29811 MB |
724 | static __devinit int wm8731_i2c_probe(struct i2c_client *i2c, |
725 | const struct i2c_device_id *id) | |
a8035c8f | 726 | { |
5998102b MB |
727 | struct wm8731_priv *wm8731; |
728 | struct snd_soc_codec *codec; | |
a8035c8f | 729 | |
5998102b MB |
730 | wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); |
731 | if (wm8731 == NULL) | |
732 | return -ENOMEM; | |
733 | ||
734 | codec = &wm8731->codec; | |
735 | codec->hw_write = (hw_write_t)i2c_master_send; | |
736 | ||
737 | i2c_set_clientdata(i2c, wm8731); | |
a8035c8f MB |
738 | codec->control_data = i2c; |
739 | ||
5998102b | 740 | codec->dev = &i2c->dev; |
a8035c8f | 741 | |
5998102b | 742 | return wm8731_register(wm8731); |
a8035c8f MB |
743 | } |
744 | ||
c6f29811 | 745 | static __devexit int wm8731_i2c_remove(struct i2c_client *client) |
a8035c8f | 746 | { |
5998102b MB |
747 | struct wm8731_priv *wm8731 = i2c_get_clientdata(client); |
748 | wm8731_unregister(wm8731); | |
a8035c8f MB |
749 | return 0; |
750 | } | |
751 | ||
b3b50b3f MB |
752 | #ifdef CONFIG_PM |
753 | static int wm8731_i2c_suspend(struct i2c_client *i2c, pm_message_t msg) | |
754 | { | |
755 | return snd_soc_suspend_device(&i2c->dev); | |
756 | } | |
757 | ||
758 | static int wm8731_i2c_resume(struct i2c_client *i2c) | |
759 | { | |
760 | return snd_soc_resume_device(&i2c->dev); | |
761 | } | |
762 | #else | |
763 | #define wm8731_i2c_suspend NULL | |
764 | #define wm8731_i2c_resume NULL | |
765 | #endif | |
766 | ||
a8035c8f MB |
767 | static const struct i2c_device_id wm8731_i2c_id[] = { |
768 | { "wm8731", 0 }, | |
769 | { } | |
770 | }; | |
771 | MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); | |
772 | ||
773 | static struct i2c_driver wm8731_i2c_driver = { | |
774 | .driver = { | |
775 | .name = "WM8731 I2C Codec", | |
776 | .owner = THIS_MODULE, | |
777 | }, | |
778 | .probe = wm8731_i2c_probe, | |
c6f29811 | 779 | .remove = __devexit_p(wm8731_i2c_remove), |
b3b50b3f MB |
780 | .suspend = wm8731_i2c_suspend, |
781 | .resume = wm8731_i2c_resume, | |
a8035c8f MB |
782 | .id_table = wm8731_i2c_id, |
783 | }; | |
784 | #endif | |
785 | ||
c9b3a40f | 786 | static int __init wm8731_modinit(void) |
64089b84 | 787 | { |
5998102b MB |
788 | int ret; |
789 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
790 | ret = i2c_add_driver(&wm8731_i2c_driver); | |
791 | if (ret != 0) { | |
792 | printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n", | |
793 | ret); | |
794 | } | |
795 | #endif | |
796 | #if defined(CONFIG_SPI_MASTER) | |
797 | ret = spi_register_driver(&wm8731_spi_driver); | |
798 | if (ret != 0) { | |
799 | printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n", | |
800 | ret); | |
801 | } | |
802 | #endif | |
803 | return 0; | |
64089b84 MB |
804 | } |
805 | module_init(wm8731_modinit); | |
806 | ||
807 | static void __exit wm8731_exit(void) | |
808 | { | |
5998102b MB |
809 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
810 | i2c_del_driver(&wm8731_i2c_driver); | |
811 | #endif | |
812 | #if defined(CONFIG_SPI_MASTER) | |
813 | spi_unregister_driver(&wm8731_spi_driver); | |
814 | #endif | |
64089b84 MB |
815 | } |
816 | module_exit(wm8731_exit); | |
817 | ||
40e0aa64 RP |
818 | MODULE_DESCRIPTION("ASoC WM8731 driver"); |
819 | MODULE_AUTHOR("Richard Purdie"); | |
820 | MODULE_LICENSE("GPL"); |