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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 | ||
32 | #define AUDIO_NAME "wm8731" | |
b36d61d4 | 33 | #define WM8731_VERSION "0.13" |
40e0aa64 | 34 | |
40e0aa64 RP |
35 | struct snd_soc_codec_device soc_codec_dev_wm8731; |
36 | ||
b36d61d4 FM |
37 | /* codec private data */ |
38 | struct wm8731_priv { | |
39 | unsigned int sysclk; | |
40 | }; | |
41 | ||
40e0aa64 RP |
42 | /* |
43 | * wm8731 register cache | |
44 | * We can't read the WM8731 register space when we are | |
45 | * using 2 wire for device control, so we cache them instead. | |
46 | * There is no point in caching the reset register | |
47 | */ | |
48 | static const u16 wm8731_reg[WM8731_CACHEREGNUM] = { | |
49 | 0x0097, 0x0097, 0x0079, 0x0079, | |
50 | 0x000a, 0x0008, 0x009f, 0x000a, | |
51 | 0x0000, 0x0000 | |
52 | }; | |
53 | ||
40e0aa64 RP |
54 | /* |
55 | * read wm8731 register cache | |
56 | */ | |
57 | static inline unsigned int wm8731_read_reg_cache(struct snd_soc_codec *codec, | |
58 | unsigned int reg) | |
59 | { | |
60 | u16 *cache = codec->reg_cache; | |
61 | if (reg == WM8731_RESET) | |
62 | return 0; | |
63 | if (reg >= WM8731_CACHEREGNUM) | |
64 | return -1; | |
65 | return cache[reg]; | |
66 | } | |
67 | ||
68 | /* | |
69 | * write wm8731 register cache | |
70 | */ | |
71 | static inline void wm8731_write_reg_cache(struct snd_soc_codec *codec, | |
72 | u16 reg, unsigned int value) | |
73 | { | |
74 | u16 *cache = codec->reg_cache; | |
75 | if (reg >= WM8731_CACHEREGNUM) | |
76 | return; | |
77 | cache[reg] = value; | |
78 | } | |
79 | ||
80 | /* | |
81 | * write to the WM8731 register space | |
82 | */ | |
83 | static int wm8731_write(struct snd_soc_codec *codec, unsigned int reg, | |
84 | unsigned int value) | |
85 | { | |
86 | u8 data[2]; | |
87 | ||
88 | /* data is | |
89 | * D15..D9 WM8731 register offset | |
90 | * D8...D0 register data | |
91 | */ | |
92 | data[0] = (reg << 1) | ((value >> 8) & 0x0001); | |
93 | data[1] = value & 0x00ff; | |
94 | ||
d454aee9 | 95 | wm8731_write_reg_cache(codec, reg, value); |
40e0aa64 RP |
96 | if (codec->hw_write(codec->control_data, data, 2) == 2) |
97 | return 0; | |
98 | else | |
99 | return -EIO; | |
100 | } | |
101 | ||
102 | #define wm8731_reset(c) wm8731_write(c, WM8731_RESET, 0) | |
103 | ||
104 | static const char *wm8731_input_select[] = {"Line In", "Mic"}; | |
105 | static const char *wm8731_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"}; | |
106 | ||
107 | static const struct soc_enum wm8731_enum[] = { | |
108 | SOC_ENUM_SINGLE(WM8731_APANA, 2, 2, wm8731_input_select), | |
109 | SOC_ENUM_SINGLE(WM8731_APDIGI, 1, 4, wm8731_deemph), | |
110 | }; | |
111 | ||
112 | static const struct snd_kcontrol_new wm8731_snd_controls[] = { | |
113 | ||
bd903b6e LG |
114 | SOC_DOUBLE_R("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V, |
115 | 0, 127, 0), | |
116 | SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V, | |
117 | 7, 1, 0), | |
40e0aa64 RP |
118 | |
119 | SOC_DOUBLE_R("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0), | |
120 | SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), | |
121 | ||
122 | SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA, 0, 1, 0), | |
123 | SOC_SINGLE("Capture Mic Switch", WM8731_APANA, 1, 1, 1), | |
124 | ||
125 | SOC_SINGLE("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1), | |
126 | ||
127 | SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), | |
128 | SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), | |
129 | ||
130 | SOC_ENUM("Playback De-emphasis", wm8731_enum[1]), | |
131 | }; | |
132 | ||
133 | /* add non dapm controls */ | |
134 | static int wm8731_add_controls(struct snd_soc_codec *codec) | |
135 | { | |
136 | int err, i; | |
137 | ||
138 | for (i = 0; i < ARRAY_SIZE(wm8731_snd_controls); i++) { | |
d454aee9 MB |
139 | err = snd_ctl_add(codec->card, |
140 | snd_soc_cnew(&wm8731_snd_controls[i], | |
141 | codec, NULL)); | |
142 | if (err < 0) | |
40e0aa64 RP |
143 | return err; |
144 | } | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | /* Output Mixer */ | |
150 | static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = { | |
151 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0), | |
152 | SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0), | |
153 | SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), | |
154 | }; | |
155 | ||
156 | /* Input mux */ | |
157 | static const struct snd_kcontrol_new wm8731_input_mux_controls = | |
158 | SOC_DAPM_ENUM("Input Select", wm8731_enum[0]); | |
159 | ||
160 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { | |
161 | SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1, | |
162 | &wm8731_output_mixer_controls[0], | |
163 | ARRAY_SIZE(wm8731_output_mixer_controls)), | |
164 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1), | |
165 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
166 | SND_SOC_DAPM_OUTPUT("LHPOUT"), | |
167 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
168 | SND_SOC_DAPM_OUTPUT("RHPOUT"), | |
169 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1), | |
170 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls), | |
171 | SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0), | |
172 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1), | |
173 | SND_SOC_DAPM_INPUT("MICIN"), | |
174 | SND_SOC_DAPM_INPUT("RLINEIN"), | |
175 | SND_SOC_DAPM_INPUT("LLINEIN"), | |
176 | }; | |
177 | ||
a65f0568 | 178 | static const struct snd_soc_dapm_route intercon[] = { |
40e0aa64 RP |
179 | /* output mixer */ |
180 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, | |
181 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, | |
182 | {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, | |
183 | ||
184 | /* outputs */ | |
185 | {"RHPOUT", NULL, "Output Mixer"}, | |
186 | {"ROUT", NULL, "Output Mixer"}, | |
187 | {"LHPOUT", NULL, "Output Mixer"}, | |
188 | {"LOUT", NULL, "Output Mixer"}, | |
189 | ||
190 | /* input mux */ | |
191 | {"Input Mux", "Line In", "Line Input"}, | |
192 | {"Input Mux", "Mic", "Mic Bias"}, | |
193 | {"ADC", NULL, "Input Mux"}, | |
194 | ||
195 | /* inputs */ | |
196 | {"Line Input", NULL, "LLINEIN"}, | |
197 | {"Line Input", NULL, "RLINEIN"}, | |
198 | {"Mic Bias", NULL, "MICIN"}, | |
40e0aa64 RP |
199 | }; |
200 | ||
201 | static int wm8731_add_widgets(struct snd_soc_codec *codec) | |
202 | { | |
a65f0568 MB |
203 | snd_soc_dapm_new_controls(codec, wm8731_dapm_widgets, |
204 | ARRAY_SIZE(wm8731_dapm_widgets)); | |
40e0aa64 | 205 | |
a65f0568 | 206 | snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon)); |
40e0aa64 RP |
207 | |
208 | snd_soc_dapm_new_widgets(codec); | |
209 | return 0; | |
210 | } | |
211 | ||
212 | struct _coeff_div { | |
213 | u32 mclk; | |
214 | u32 rate; | |
215 | u16 fs; | |
216 | u8 sr:4; | |
217 | u8 bosr:1; | |
218 | u8 usb:1; | |
219 | }; | |
220 | ||
221 | /* codec mclk clock divider coefficients */ | |
222 | static const struct _coeff_div coeff_div[] = { | |
223 | /* 48k */ | |
224 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, | |
225 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, | |
226 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, | |
227 | ||
228 | /* 32k */ | |
229 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, | |
230 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, | |
298a2c75 | 231 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, |
40e0aa64 RP |
232 | |
233 | /* 8k */ | |
234 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, | |
235 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, | |
236 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, | |
237 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, | |
238 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, | |
239 | ||
240 | /* 96k */ | |
241 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, | |
242 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, | |
243 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, | |
244 | ||
245 | /* 44.1k */ | |
246 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, | |
247 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, | |
248 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, | |
249 | ||
250 | /* 88.2k */ | |
251 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, | |
252 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, | |
253 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, | |
254 | }; | |
255 | ||
256 | static inline int get_coeff(int mclk, int rate) | |
257 | { | |
258 | int i; | |
259 | ||
260 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
261 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
262 | return i; | |
263 | } | |
264 | return 0; | |
265 | } | |
266 | ||
b36d61d4 FM |
267 | static int wm8731_hw_params(struct snd_pcm_substream *substream, |
268 | struct snd_pcm_hw_params *params) | |
40e0aa64 | 269 | { |
b36d61d4 FM |
270 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
271 | struct snd_soc_device *socdev = rtd->socdev; | |
272 | struct snd_soc_codec *codec = socdev->codec; | |
273 | struct wm8731_priv *wm8731 = codec->private_data; | |
274 | u16 iface = wm8731_read_reg_cache(codec, WM8731_IFACE) & 0xfff3; | |
275 | int i = get_coeff(wm8731->sysclk, params_rate(params)); | |
276 | u16 srate = (coeff_div[i].sr << 2) | | |
277 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; | |
40e0aa64 | 278 | |
b36d61d4 FM |
279 | wm8731_write(codec, WM8731_SRATE, srate); |
280 | ||
281 | /* bit size */ | |
282 | switch (params_format(params)) { | |
283 | case SNDRV_PCM_FORMAT_S16_LE: | |
284 | break; | |
285 | case SNDRV_PCM_FORMAT_S20_3LE: | |
286 | iface |= 0x0004; | |
287 | break; | |
288 | case SNDRV_PCM_FORMAT_S24_LE: | |
289 | iface |= 0x0008; | |
290 | break; | |
291 | } | |
40e0aa64 | 292 | |
b36d61d4 FM |
293 | wm8731_write(codec, WM8731_IFACE, iface); |
294 | return 0; | |
40e0aa64 RP |
295 | } |
296 | ||
297 | static int wm8731_pcm_prepare(struct snd_pcm_substream *substream) | |
298 | { | |
299 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
300 | struct snd_soc_device *socdev = rtd->socdev; | |
301 | struct snd_soc_codec *codec = socdev->codec; | |
b36d61d4 FM |
302 | |
303 | /* set active */ | |
304 | wm8731_write(codec, WM8731_ACTIVE, 0x0001); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
309 | static void wm8731_shutdown(struct snd_pcm_substream *substream) | |
310 | { | |
311 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
312 | struct snd_soc_device *socdev = rtd->socdev; | |
313 | struct snd_soc_codec *codec = socdev->codec; | |
314 | ||
315 | /* deactivate */ | |
316 | if (!codec->active) { | |
317 | udelay(50); | |
318 | wm8731_write(codec, WM8731_ACTIVE, 0x0); | |
319 | } | |
320 | } | |
321 | ||
e550e17f | 322 | static int wm8731_mute(struct snd_soc_dai *dai, int mute) |
b36d61d4 FM |
323 | { |
324 | struct snd_soc_codec *codec = dai->codec; | |
325 | u16 mute_reg = wm8731_read_reg_cache(codec, WM8731_APDIGI) & 0xfff7; | |
326 | ||
327 | if (mute) | |
328 | wm8731_write(codec, WM8731_APDIGI, mute_reg | 0x8); | |
329 | else | |
330 | wm8731_write(codec, WM8731_APDIGI, mute_reg); | |
331 | return 0; | |
332 | } | |
333 | ||
e550e17f | 334 | static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai, |
b36d61d4 FM |
335 | int clk_id, unsigned int freq, int dir) |
336 | { | |
337 | struct snd_soc_codec *codec = codec_dai->codec; | |
338 | struct wm8731_priv *wm8731 = codec->private_data; | |
339 | ||
340 | switch (freq) { | |
341 | case 11289600: | |
342 | case 12000000: | |
343 | case 12288000: | |
344 | case 16934400: | |
345 | case 18432000: | |
346 | wm8731->sysclk = freq; | |
347 | return 0; | |
348 | } | |
349 | return -EINVAL; | |
350 | } | |
351 | ||
352 | ||
e550e17f | 353 | static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, |
b36d61d4 FM |
354 | unsigned int fmt) |
355 | { | |
356 | struct snd_soc_codec *codec = codec_dai->codec; | |
357 | u16 iface = 0; | |
40e0aa64 RP |
358 | |
359 | /* set master/slave audio interface */ | |
b36d61d4 | 360 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
40e0aa64 RP |
361 | case SND_SOC_DAIFMT_CBM_CFM: |
362 | iface |= 0x0040; | |
363 | break; | |
364 | case SND_SOC_DAIFMT_CBS_CFS: | |
365 | break; | |
b36d61d4 FM |
366 | default: |
367 | return -EINVAL; | |
40e0aa64 | 368 | } |
40e0aa64 RP |
369 | |
370 | /* interface format */ | |
b36d61d4 | 371 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
40e0aa64 RP |
372 | case SND_SOC_DAIFMT_I2S: |
373 | iface |= 0x0002; | |
374 | break; | |
375 | case SND_SOC_DAIFMT_RIGHT_J: | |
376 | break; | |
377 | case SND_SOC_DAIFMT_LEFT_J: | |
378 | iface |= 0x0001; | |
379 | break; | |
380 | case SND_SOC_DAIFMT_DSP_A: | |
381 | iface |= 0x0003; | |
382 | break; | |
383 | case SND_SOC_DAIFMT_DSP_B: | |
384 | iface |= 0x0013; | |
385 | break; | |
b36d61d4 FM |
386 | default: |
387 | return -EINVAL; | |
40e0aa64 RP |
388 | } |
389 | ||
390 | /* clock inversion */ | |
b36d61d4 | 391 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
40e0aa64 RP |
392 | case SND_SOC_DAIFMT_NB_NF: |
393 | break; | |
394 | case SND_SOC_DAIFMT_IB_IF: | |
395 | iface |= 0x0090; | |
396 | break; | |
397 | case SND_SOC_DAIFMT_IB_NF: | |
398 | iface |= 0x0080; | |
399 | break; | |
400 | case SND_SOC_DAIFMT_NB_IF: | |
401 | iface |= 0x0010; | |
402 | break; | |
b36d61d4 FM |
403 | default: |
404 | return -EINVAL; | |
40e0aa64 RP |
405 | } |
406 | ||
407 | /* set iface */ | |
408 | wm8731_write(codec, WM8731_IFACE, iface); | |
40e0aa64 RP |
409 | return 0; |
410 | } | |
411 | ||
0be9898a MB |
412 | static int wm8731_set_bias_level(struct snd_soc_codec *codec, |
413 | enum snd_soc_bias_level level) | |
40e0aa64 RP |
414 | { |
415 | u16 reg = wm8731_read_reg_cache(codec, WM8731_PWR) & 0xff7f; | |
416 | ||
0be9898a MB |
417 | switch (level) { |
418 | case SND_SOC_BIAS_ON: | |
40e0aa64 RP |
419 | /* vref/mid, osc on, dac unmute */ |
420 | wm8731_write(codec, WM8731_PWR, reg); | |
421 | break; | |
0be9898a | 422 | case SND_SOC_BIAS_PREPARE: |
40e0aa64 | 423 | break; |
0be9898a | 424 | case SND_SOC_BIAS_STANDBY: |
40e0aa64 RP |
425 | /* everything off except vref/vmid, */ |
426 | wm8731_write(codec, WM8731_PWR, reg | 0x0040); | |
427 | break; | |
0be9898a | 428 | case SND_SOC_BIAS_OFF: |
40e0aa64 RP |
429 | /* everything off, dac mute, inactive */ |
430 | wm8731_write(codec, WM8731_ACTIVE, 0x0); | |
431 | wm8731_write(codec, WM8731_PWR, 0xffff); | |
432 | break; | |
433 | } | |
0be9898a | 434 | codec->bias_level = level; |
40e0aa64 RP |
435 | return 0; |
436 | } | |
437 | ||
b36d61d4 FM |
438 | #define WM8731_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
439 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
440 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
441 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ | |
442 | SNDRV_PCM_RATE_96000) | |
443 | ||
444 | #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
445 | SNDRV_PCM_FMTBIT_S24_LE) | |
446 | ||
e550e17f | 447 | struct snd_soc_dai wm8731_dai = { |
40e0aa64 RP |
448 | .name = "WM8731", |
449 | .playback = { | |
450 | .stream_name = "Playback", | |
451 | .channels_min = 1, | |
452 | .channels_max = 2, | |
b36d61d4 FM |
453 | .rates = WM8731_RATES, |
454 | .formats = WM8731_FORMATS,}, | |
40e0aa64 RP |
455 | .capture = { |
456 | .stream_name = "Capture", | |
457 | .channels_min = 1, | |
458 | .channels_max = 2, | |
b36d61d4 FM |
459 | .rates = WM8731_RATES, |
460 | .formats = WM8731_FORMATS,}, | |
40e0aa64 RP |
461 | .ops = { |
462 | .prepare = wm8731_pcm_prepare, | |
b36d61d4 | 463 | .hw_params = wm8731_hw_params, |
40e0aa64 RP |
464 | .shutdown = wm8731_shutdown, |
465 | }, | |
b36d61d4 FM |
466 | .dai_ops = { |
467 | .digital_mute = wm8731_mute, | |
468 | .set_sysclk = wm8731_set_dai_sysclk, | |
469 | .set_fmt = wm8731_set_dai_fmt, | |
470 | } | |
40e0aa64 RP |
471 | }; |
472 | EXPORT_SYMBOL_GPL(wm8731_dai); | |
473 | ||
474 | static int wm8731_suspend(struct platform_device *pdev, pm_message_t state) | |
475 | { | |
476 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
477 | struct snd_soc_codec *codec = socdev->codec; | |
478 | ||
479 | wm8731_write(codec, WM8731_ACTIVE, 0x0); | |
0be9898a | 480 | wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); |
40e0aa64 RP |
481 | return 0; |
482 | } | |
483 | ||
484 | static int wm8731_resume(struct platform_device *pdev) | |
485 | { | |
486 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
487 | struct snd_soc_codec *codec = socdev->codec; | |
488 | int i; | |
489 | u8 data[2]; | |
490 | u16 *cache = codec->reg_cache; | |
491 | ||
492 | /* Sync reg_cache with the hardware */ | |
493 | for (i = 0; i < ARRAY_SIZE(wm8731_reg); i++) { | |
494 | data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); | |
495 | data[1] = cache[i] & 0x00ff; | |
496 | codec->hw_write(codec->control_data, data, 2); | |
497 | } | |
0be9898a MB |
498 | wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
499 | wm8731_set_bias_level(codec, codec->suspend_bias_level); | |
40e0aa64 RP |
500 | return 0; |
501 | } | |
502 | ||
503 | /* | |
504 | * initialise the WM8731 driver | |
505 | * register the mixer and dsp interfaces with the kernel | |
506 | */ | |
507 | static int wm8731_init(struct snd_soc_device *socdev) | |
508 | { | |
509 | struct snd_soc_codec *codec = socdev->codec; | |
510 | int reg, ret = 0; | |
511 | ||
512 | codec->name = "WM8731"; | |
513 | codec->owner = THIS_MODULE; | |
514 | codec->read = wm8731_read_reg_cache; | |
515 | codec->write = wm8731_write; | |
0be9898a | 516 | codec->set_bias_level = wm8731_set_bias_level; |
40e0aa64 RP |
517 | codec->dai = &wm8731_dai; |
518 | codec->num_dai = 1; | |
d751b233 | 519 | codec->reg_cache_size = ARRAY_SIZE(wm8731_reg); |
88cb4290 | 520 | codec->reg_cache = kmemdup(wm8731_reg, sizeof(wm8731_reg), GFP_KERNEL); |
40e0aa64 RP |
521 | if (codec->reg_cache == NULL) |
522 | return -ENOMEM; | |
40e0aa64 RP |
523 | |
524 | wm8731_reset(codec); | |
525 | ||
526 | /* register pcms */ | |
527 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
528 | if (ret < 0) { | |
e35115a5 LG |
529 | printk(KERN_ERR "wm8731: failed to create pcms\n"); |
530 | goto pcm_err; | |
40e0aa64 RP |
531 | } |
532 | ||
533 | /* power on device */ | |
0be9898a | 534 | wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
40e0aa64 RP |
535 | |
536 | /* set the update bits */ | |
537 | reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V); | |
389619f1 | 538 | wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100); |
40e0aa64 | 539 | reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V); |
389619f1 | 540 | wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100); |
40e0aa64 | 541 | reg = wm8731_read_reg_cache(codec, WM8731_LINVOL); |
389619f1 | 542 | wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100); |
40e0aa64 | 543 | reg = wm8731_read_reg_cache(codec, WM8731_RINVOL); |
389619f1 | 544 | wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100); |
40e0aa64 RP |
545 | |
546 | wm8731_add_controls(codec); | |
547 | wm8731_add_widgets(codec); | |
548 | ret = snd_soc_register_card(socdev); | |
549 | if (ret < 0) { | |
e35115a5 LG |
550 | printk(KERN_ERR "wm8731: failed to register card\n"); |
551 | goto card_err; | |
40e0aa64 RP |
552 | } |
553 | ||
554 | return ret; | |
e35115a5 LG |
555 | |
556 | card_err: | |
557 | snd_soc_free_pcms(socdev); | |
558 | snd_soc_dapm_free(socdev); | |
559 | pcm_err: | |
560 | kfree(codec->reg_cache); | |
561 | return ret; | |
40e0aa64 RP |
562 | } |
563 | ||
564 | static struct snd_soc_device *wm8731_socdev; | |
565 | ||
d454aee9 | 566 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
40e0aa64 RP |
567 | |
568 | /* | |
569 | * WM8731 2 wire address is determined by GPIO5 | |
570 | * state during powerup. | |
571 | * low = 0x1a | |
572 | * high = 0x1b | |
573 | */ | |
40e0aa64 | 574 | |
81297c8a JD |
575 | static int wm8731_i2c_probe(struct i2c_client *i2c, |
576 | const struct i2c_device_id *id) | |
40e0aa64 RP |
577 | { |
578 | struct snd_soc_device *socdev = wm8731_socdev; | |
40e0aa64 | 579 | struct snd_soc_codec *codec = socdev->codec; |
40e0aa64 RP |
580 | int ret; |
581 | ||
40e0aa64 RP |
582 | i2c_set_clientdata(i2c, codec); |
583 | codec->control_data = i2c; | |
584 | ||
40e0aa64 | 585 | ret = wm8731_init(socdev); |
81297c8a | 586 | if (ret < 0) |
a5c95e90 | 587 | pr_err("failed to initialise WM8731\n"); |
40e0aa64 | 588 | |
40e0aa64 RP |
589 | return ret; |
590 | } | |
591 | ||
81297c8a | 592 | static int wm8731_i2c_remove(struct i2c_client *client) |
40e0aa64 | 593 | { |
d454aee9 | 594 | struct snd_soc_codec *codec = i2c_get_clientdata(client); |
40e0aa64 | 595 | kfree(codec->reg_cache); |
40e0aa64 RP |
596 | return 0; |
597 | } | |
598 | ||
81297c8a JD |
599 | static const struct i2c_device_id wm8731_i2c_id[] = { |
600 | { "wm8731", 0 }, | |
601 | { } | |
602 | }; | |
603 | MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); | |
40e0aa64 | 604 | |
40e0aa64 RP |
605 | static struct i2c_driver wm8731_i2c_driver = { |
606 | .driver = { | |
607 | .name = "WM8731 I2C Codec", | |
608 | .owner = THIS_MODULE, | |
609 | }, | |
81297c8a JD |
610 | .probe = wm8731_i2c_probe, |
611 | .remove = wm8731_i2c_remove, | |
612 | .id_table = wm8731_i2c_id, | |
40e0aa64 RP |
613 | }; |
614 | ||
81297c8a JD |
615 | static int wm8731_add_i2c_device(struct platform_device *pdev, |
616 | const struct wm8731_setup_data *setup) | |
617 | { | |
618 | struct i2c_board_info info; | |
619 | struct i2c_adapter *adapter; | |
620 | struct i2c_client *client; | |
621 | int ret; | |
622 | ||
623 | ret = i2c_add_driver(&wm8731_i2c_driver); | |
624 | if (ret != 0) { | |
625 | dev_err(&pdev->dev, "can't add i2c driver\n"); | |
626 | return ret; | |
627 | } | |
628 | ||
629 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
630 | info.addr = setup->i2c_address; | |
631 | strlcpy(info.type, "wm8731", I2C_NAME_SIZE); | |
632 | ||
633 | adapter = i2c_get_adapter(setup->i2c_bus); | |
634 | if (!adapter) { | |
635 | dev_err(&pdev->dev, "can't get i2c adapter %d\n", | |
636 | setup->i2c_bus); | |
637 | goto err_driver; | |
638 | } | |
639 | ||
640 | client = i2c_new_device(adapter, &info); | |
641 | i2c_put_adapter(adapter); | |
642 | if (!client) { | |
643 | dev_err(&pdev->dev, "can't add i2c device at 0x%x\n", | |
644 | (unsigned int)info.addr); | |
645 | goto err_driver; | |
646 | } | |
647 | ||
648 | return 0; | |
649 | ||
650 | err_driver: | |
651 | i2c_del_driver(&wm8731_i2c_driver); | |
652 | return -ENODEV; | |
653 | } | |
40e0aa64 RP |
654 | #endif |
655 | ||
d2a40355 CC |
656 | #if defined(CONFIG_SPI_MASTER) |
657 | static int __devinit wm8731_spi_probe(struct spi_device *spi) | |
658 | { | |
659 | struct snd_soc_device *socdev = wm8731_socdev; | |
660 | struct snd_soc_codec *codec = socdev->codec; | |
661 | int ret; | |
662 | ||
663 | codec->control_data = spi; | |
664 | ||
665 | ret = wm8731_init(socdev); | |
666 | if (ret < 0) | |
667 | dev_err(&spi->dev, "failed to initialise WM8731\n"); | |
668 | ||
669 | return ret; | |
670 | } | |
671 | ||
672 | static int __devexit wm8731_spi_remove(struct spi_device *spi) | |
673 | { | |
674 | return 0; | |
675 | } | |
676 | ||
677 | static struct spi_driver wm8731_spi_driver = { | |
678 | .driver = { | |
679 | .name = "wm8731", | |
680 | .bus = &spi_bus_type, | |
681 | .owner = THIS_MODULE, | |
682 | }, | |
683 | .probe = wm8731_spi_probe, | |
684 | .remove = __devexit_p(wm8731_spi_remove), | |
685 | }; | |
686 | ||
687 | static int wm8731_spi_write(struct spi_device *spi, const char *data, int len) | |
688 | { | |
689 | struct spi_transfer t; | |
690 | struct spi_message m; | |
8569be3c | 691 | u8 msg[2]; |
d2a40355 CC |
692 | |
693 | if (len <= 0) | |
694 | return 0; | |
695 | ||
8569be3c AH |
696 | msg[0] = data[0]; |
697 | msg[1] = data[1]; | |
d2a40355 CC |
698 | |
699 | spi_message_init(&m); | |
700 | memset(&t, 0, (sizeof t)); | |
701 | ||
702 | t.tx_buf = &msg[0]; | |
703 | t.len = len; | |
704 | ||
705 | spi_message_add_tail(&t, &m); | |
706 | spi_sync(spi, &m); | |
707 | ||
708 | return len; | |
709 | } | |
710 | #endif /* CONFIG_SPI_MASTER */ | |
711 | ||
40e0aa64 RP |
712 | static int wm8731_probe(struct platform_device *pdev) |
713 | { | |
714 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
715 | struct wm8731_setup_data *setup; | |
716 | struct snd_soc_codec *codec; | |
b36d61d4 | 717 | struct wm8731_priv *wm8731; |
40e0aa64 RP |
718 | int ret = 0; |
719 | ||
a5c95e90 | 720 | pr_info("WM8731 Audio Codec %s", WM8731_VERSION); |
40e0aa64 RP |
721 | |
722 | setup = socdev->codec_data; | |
723 | codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); | |
724 | if (codec == NULL) | |
725 | return -ENOMEM; | |
726 | ||
b36d61d4 FM |
727 | wm8731 = kzalloc(sizeof(struct wm8731_priv), GFP_KERNEL); |
728 | if (wm8731 == NULL) { | |
729 | kfree(codec); | |
730 | return -ENOMEM; | |
731 | } | |
732 | ||
733 | codec->private_data = wm8731; | |
40e0aa64 RP |
734 | socdev->codec = codec; |
735 | mutex_init(&codec->mutex); | |
736 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
737 | INIT_LIST_HEAD(&codec->dapm_paths); | |
738 | ||
739 | wm8731_socdev = socdev; | |
d2a40355 CC |
740 | ret = -ENODEV; |
741 | ||
d454aee9 | 742 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
40e0aa64 | 743 | if (setup->i2c_address) { |
40e0aa64 | 744 | codec->hw_write = (hw_write_t)i2c_master_send; |
81297c8a | 745 | ret = wm8731_add_i2c_device(pdev, setup); |
40e0aa64 | 746 | } |
d2a40355 CC |
747 | #endif |
748 | #if defined(CONFIG_SPI_MASTER) | |
749 | if (setup->spi) { | |
750 | codec->hw_write = (hw_write_t)wm8731_spi_write; | |
751 | ret = spi_register_driver(&wm8731_spi_driver); | |
752 | if (ret != 0) | |
753 | printk(KERN_ERR "can't add spi driver"); | |
754 | } | |
40e0aa64 | 755 | #endif |
3051e41a JD |
756 | |
757 | if (ret != 0) { | |
758 | kfree(codec->private_data); | |
759 | kfree(codec); | |
760 | } | |
40e0aa64 RP |
761 | return ret; |
762 | } | |
763 | ||
764 | /* power down chip */ | |
765 | static int wm8731_remove(struct platform_device *pdev) | |
766 | { | |
767 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
768 | struct snd_soc_codec *codec = socdev->codec; | |
769 | ||
770 | if (codec->control_data) | |
0be9898a | 771 | wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF); |
40e0aa64 RP |
772 | |
773 | snd_soc_free_pcms(socdev); | |
774 | snd_soc_dapm_free(socdev); | |
d454aee9 | 775 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
81297c8a | 776 | i2c_unregister_device(codec->control_data); |
40e0aa64 | 777 | i2c_del_driver(&wm8731_i2c_driver); |
d2a40355 CC |
778 | #endif |
779 | #if defined(CONFIG_SPI_MASTER) | |
780 | spi_unregister_driver(&wm8731_spi_driver); | |
40e0aa64 | 781 | #endif |
b36d61d4 | 782 | kfree(codec->private_data); |
40e0aa64 RP |
783 | kfree(codec); |
784 | ||
785 | return 0; | |
786 | } | |
787 | ||
788 | struct snd_soc_codec_device soc_codec_dev_wm8731 = { | |
789 | .probe = wm8731_probe, | |
790 | .remove = wm8731_remove, | |
791 | .suspend = wm8731_suspend, | |
792 | .resume = wm8731_resume, | |
793 | }; | |
40e0aa64 RP |
794 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731); |
795 | ||
796 | MODULE_DESCRIPTION("ASoC WM8731 driver"); | |
797 | MODULE_AUTHOR("Richard Purdie"); | |
798 | MODULE_LICENSE("GPL"); |