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1 | /* |
2 | * wm8737.c -- WM8737 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2010 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 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/moduleparam.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/pm.h> | |
18 | #include <linux/i2c.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/regulator/consumer.h> | |
21 | #include <linux/spi/spi.h> | |
22 | #include <linux/slab.h> | |
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 | #include <sound/tlv.h> | |
30 | ||
31 | #include "wm8737.h" | |
32 | ||
33 | #define WM8737_NUM_SUPPLIES 4 | |
34 | static const char *wm8737_supply_names[WM8737_NUM_SUPPLIES] = { | |
35 | "DCVDD", | |
36 | "DBVDD", | |
37 | "AVDD", | |
38 | "MVDD", | |
39 | }; | |
40 | ||
41 | /* codec private data */ | |
42 | struct wm8737_priv { | |
43 | enum snd_soc_control_type control_type; | |
44 | struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES]; | |
45 | unsigned int mclk; | |
46 | }; | |
47 | ||
48 | static const u16 wm8737_reg[WM8737_REGISTER_COUNT] = { | |
49 | 0x00C3, /* R0 - Left PGA volume */ | |
50 | 0x00C3, /* R1 - Right PGA volume */ | |
51 | 0x0007, /* R2 - AUDIO path L */ | |
52 | 0x0007, /* R3 - AUDIO path R */ | |
53 | 0x0000, /* R4 - 3D Enhance */ | |
54 | 0x0000, /* R5 - ADC Control */ | |
55 | 0x0000, /* R6 - Power Management */ | |
56 | 0x000A, /* R7 - Audio Format */ | |
57 | 0x0000, /* R8 - Clocking */ | |
58 | 0x000F, /* R9 - MIC Preamp Control */ | |
59 | 0x0003, /* R10 - Misc Bias Control */ | |
60 | 0x0000, /* R11 - Noise Gate */ | |
61 | 0x007C, /* R12 - ALC1 */ | |
62 | 0x0000, /* R13 - ALC2 */ | |
63 | 0x0032, /* R14 - ALC3 */ | |
64 | }; | |
65 | ||
66 | static int wm8737_reset(struct snd_soc_codec *codec) | |
67 | { | |
68 | return snd_soc_write(codec, WM8737_RESET, 0); | |
69 | } | |
70 | ||
71 | static const unsigned int micboost_tlv[] = { | |
72 | TLV_DB_RANGE_HEAD(4), | |
73 | 0, 0, TLV_DB_SCALE_ITEM(1300, 0, 0), | |
74 | 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0), | |
75 | 2, 2, TLV_DB_SCALE_ITEM(2800, 0, 0), | |
76 | 3, 3, TLV_DB_SCALE_ITEM(3300, 0, 0), | |
77 | }; | |
78 | static const DECLARE_TLV_DB_SCALE(pga_tlv, -9750, 50, 1); | |
79 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -600, 600, 0); | |
80 | static const DECLARE_TLV_DB_SCALE(ng_tlv, -7800, 600, 0); | |
81 | ||
82 | static const char *micbias_enum_text[] = { | |
83 | "25%", | |
84 | "50%", | |
85 | "75%", | |
86 | "100%", | |
87 | }; | |
88 | ||
89 | static const struct soc_enum micbias_enum = | |
90 | SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 0, 4, micbias_enum_text); | |
91 | ||
92 | static const char *low_cutoff_text[] = { | |
93 | "Low", "High" | |
94 | }; | |
95 | ||
96 | static const struct soc_enum low_3d = | |
97 | SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 6, 2, low_cutoff_text); | |
98 | ||
99 | static const char *high_cutoff_text[] = { | |
100 | "High", "Low" | |
101 | }; | |
102 | ||
103 | static const struct soc_enum high_3d = | |
104 | SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 5, 2, high_cutoff_text); | |
105 | ||
106 | static const struct snd_kcontrol_new wm8737_snd_controls[] = { | |
107 | SOC_DOUBLE_R_TLV("Mic Boost Volume", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, | |
108 | 6, 3, 0, micboost_tlv), | |
109 | SOC_DOUBLE_R("Mic Boost Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, | |
110 | 4, 1, 0), | |
111 | SOC_DOUBLE("Mic ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, | |
112 | 3, 1, 0), | |
113 | ||
114 | SOC_DOUBLE_R_TLV("Capture Volume", WM8737_LEFT_PGA_VOLUME, | |
115 | WM8737_RIGHT_PGA_VOLUME, 0, 255, 0, pga_tlv), | |
116 | SOC_DOUBLE("Capture ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R, | |
117 | 2, 1, 0), | |
118 | ||
119 | SOC_DOUBLE("INPUT1 DC Bias Switch", WM8737_MISC_BIAS_CONTROL, 0, 1, 1, 0), | |
120 | ||
121 | SOC_ENUM("Mic PGA Bias", micbias_enum), | |
122 | SOC_SINGLE("ADC Low Power Switch", WM8737_ADC_CONTROL, 2, 1, 0), | |
123 | SOC_SINGLE("High Pass Filter Switch", WM8737_ADC_CONTROL, 0, 1, 1), | |
124 | SOC_DOUBLE("Polarity Invert Switch", WM8737_ADC_CONTROL, 5, 6, 1, 0), | |
125 | ||
126 | SOC_SINGLE("3D Switch", WM8737_3D_ENHANCE, 0, 1, 0), | |
127 | SOC_SINGLE("3D Depth", WM8737_3D_ENHANCE, 1, 15, 0), | |
128 | SOC_ENUM("3D Low Cut-off", low_3d), | |
129 | SOC_ENUM("3D High Cut-off", low_3d), | |
130 | SOC_SINGLE_TLV("3D ADC Volume", WM8737_3D_ENHANCE, 7, 1, 1, adc_tlv), | |
131 | ||
132 | SOC_SINGLE("Noise Gate Switch", WM8737_NOISE_GATE, 0, 1, 0), | |
133 | SOC_SINGLE_TLV("Noise Gate Threshold Volume", WM8737_NOISE_GATE, 2, 7, 0, | |
134 | ng_tlv), | |
135 | }; | |
136 | ||
137 | static const char *linsel_text[] = { | |
138 | "LINPUT1", "LINPUT2", "LINPUT3", "LINPUT1 DC", | |
139 | }; | |
140 | ||
141 | static const struct soc_enum linsel_enum = | |
142 | SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_L, 7, 4, linsel_text); | |
143 | ||
144 | static const struct snd_kcontrol_new linsel_mux = | |
145 | SOC_DAPM_ENUM("LINSEL", linsel_enum); | |
146 | ||
147 | ||
148 | static const char *rinsel_text[] = { | |
149 | "RINPUT1", "RINPUT2", "RINPUT3", "RINPUT1 DC", | |
150 | }; | |
151 | ||
152 | static const struct soc_enum rinsel_enum = | |
153 | SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_R, 7, 4, rinsel_text); | |
154 | ||
155 | static const struct snd_kcontrol_new rinsel_mux = | |
156 | SOC_DAPM_ENUM("RINSEL", rinsel_enum); | |
157 | ||
158 | static const char *bypass_text[] = { | |
159 | "Direct", "Preamp" | |
160 | }; | |
161 | ||
162 | static const struct soc_enum lbypass_enum = | |
163 | SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 2, 2, bypass_text); | |
164 | ||
165 | static const struct snd_kcontrol_new lbypass_mux = | |
166 | SOC_DAPM_ENUM("Left Bypass", lbypass_enum); | |
167 | ||
168 | ||
169 | static const struct soc_enum rbypass_enum = | |
170 | SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 3, 2, bypass_text); | |
171 | ||
172 | static const struct snd_kcontrol_new rbypass_mux = | |
173 | SOC_DAPM_ENUM("Left Bypass", rbypass_enum); | |
174 | ||
175 | static const struct snd_soc_dapm_widget wm8737_dapm_widgets[] = { | |
176 | SND_SOC_DAPM_INPUT("LINPUT1"), | |
177 | SND_SOC_DAPM_INPUT("LINPUT2"), | |
178 | SND_SOC_DAPM_INPUT("LINPUT3"), | |
179 | SND_SOC_DAPM_INPUT("RINPUT1"), | |
180 | SND_SOC_DAPM_INPUT("RINPUT2"), | |
181 | SND_SOC_DAPM_INPUT("RINPUT3"), | |
182 | SND_SOC_DAPM_INPUT("LACIN"), | |
183 | SND_SOC_DAPM_INPUT("RACIN"), | |
184 | ||
185 | SND_SOC_DAPM_MUX("LINSEL", SND_SOC_NOPM, 0, 0, &linsel_mux), | |
186 | SND_SOC_DAPM_MUX("RINSEL", SND_SOC_NOPM, 0, 0, &rinsel_mux), | |
187 | ||
188 | SND_SOC_DAPM_MUX("Left Preamp Mux", SND_SOC_NOPM, 0, 0, &lbypass_mux), | |
189 | SND_SOC_DAPM_MUX("Right Preamp Mux", SND_SOC_NOPM, 0, 0, &rbypass_mux), | |
190 | ||
191 | SND_SOC_DAPM_PGA("PGAL", WM8737_POWER_MANAGEMENT, 5, 0, NULL, 0), | |
192 | SND_SOC_DAPM_PGA("PGAR", WM8737_POWER_MANAGEMENT, 4, 0, NULL, 0), | |
193 | ||
194 | SND_SOC_DAPM_DAC("ADCL", NULL, WM8737_POWER_MANAGEMENT, 3, 0), | |
195 | SND_SOC_DAPM_DAC("ADCR", NULL, WM8737_POWER_MANAGEMENT, 2, 0), | |
196 | ||
197 | SND_SOC_DAPM_AIF_OUT("AIF", "Capture", 0, WM8737_POWER_MANAGEMENT, 6, 0), | |
198 | }; | |
199 | ||
200 | static const struct snd_soc_dapm_route intercon[] = { | |
201 | { "LINSEL", "LINPUT1", "LINPUT1" }, | |
202 | { "LINSEL", "LINPUT2", "LINPUT2" }, | |
203 | { "LINSEL", "LINPUT3", "LINPUT3" }, | |
204 | { "LINSEL", "LINPUT1 DC", "LINPUT1" }, | |
205 | ||
206 | { "RINSEL", "RINPUT1", "RINPUT1" }, | |
207 | { "RINSEL", "RINPUT2", "RINPUT2" }, | |
208 | { "RINSEL", "RINPUT3", "RINPUT3" }, | |
209 | { "RINSEL", "RINPUT1 DC", "RINPUT1" }, | |
210 | ||
211 | { "Left Preamp Mux", "Preamp", "LINSEL" }, | |
212 | { "Left Preamp Mux", "Direct", "LACIN" }, | |
213 | ||
214 | { "Right Preamp Mux", "Preamp", "RINSEL" }, | |
215 | { "Right Preamp Mux", "Direct", "RACIN" }, | |
216 | ||
217 | { "PGAL", NULL, "Left Preamp Mux" }, | |
218 | { "PGAR", NULL, "Right Preamp Mux" }, | |
219 | ||
220 | { "ADCL", NULL, "PGAL" }, | |
221 | { "ADCR", NULL, "PGAR" }, | |
222 | ||
223 | { "AIF", NULL, "ADCL" }, | |
224 | { "AIF", NULL, "ADCR" }, | |
225 | }; | |
226 | ||
227 | static int wm8737_add_widgets(struct snd_soc_codec *codec) | |
228 | { | |
229 | struct snd_soc_dapm_context *dapm = &codec->dapm; | |
230 | ||
231 | snd_soc_dapm_new_controls(dapm, wm8737_dapm_widgets, | |
232 | ARRAY_SIZE(wm8737_dapm_widgets)); | |
233 | snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon)); | |
234 | ||
235 | return 0; | |
236 | } | |
237 | ||
238 | /* codec mclk clock divider coefficients */ | |
239 | static const struct { | |
240 | u32 mclk; | |
241 | u32 rate; | |
242 | u8 usb; | |
243 | u8 sr; | |
244 | } coeff_div[] = { | |
245 | { 12288000, 8000, 0, 0x4 }, | |
246 | { 12288000, 12000, 0, 0x8 }, | |
247 | { 12288000, 16000, 0, 0xa }, | |
248 | { 12288000, 24000, 0, 0x1c }, | |
249 | { 12288000, 32000, 0, 0xc }, | |
250 | { 12288000, 48000, 0, 0 }, | |
251 | { 12288000, 96000, 0, 0xe }, | |
252 | ||
253 | { 11289600, 8000, 0, 0x14 }, | |
254 | { 11289600, 11025, 0, 0x18 }, | |
255 | { 11289600, 22050, 0, 0x1a }, | |
256 | { 11289600, 44100, 0, 0x10 }, | |
257 | { 11289600, 88200, 0, 0x1e }, | |
258 | ||
259 | { 18432000, 8000, 0, 0x5 }, | |
260 | { 18432000, 12000, 0, 0x9 }, | |
261 | { 18432000, 16000, 0, 0xb }, | |
262 | { 18432000, 24000, 0, 0x1b }, | |
263 | { 18432000, 32000, 0, 0xd }, | |
264 | { 18432000, 48000, 0, 0x1 }, | |
265 | { 18432000, 96000, 0, 0x1f }, | |
266 | ||
267 | { 16934400, 8000, 0, 0x15 }, | |
268 | { 16934400, 11025, 0, 0x19 }, | |
269 | { 16934400, 22050, 0, 0x1b }, | |
270 | { 16934400, 44100, 0, 0x11 }, | |
271 | { 16934400, 88200, 0, 0x1f }, | |
272 | ||
273 | { 12000000, 8000, 1, 0x4 }, | |
274 | { 12000000, 11025, 1, 0x19 }, | |
275 | { 12000000, 12000, 1, 0x8 }, | |
276 | { 12000000, 16000, 1, 0xa }, | |
277 | { 12000000, 22050, 1, 0x1b }, | |
278 | { 12000000, 24000, 1, 0x1c }, | |
279 | { 12000000, 32000, 1, 0xc }, | |
280 | { 12000000, 44100, 1, 0x11 }, | |
281 | { 12000000, 48000, 1, 0x0 }, | |
282 | { 12000000, 88200, 1, 0x1f }, | |
283 | { 12000000, 96000, 1, 0xe }, | |
284 | }; | |
285 | ||
286 | static int wm8737_hw_params(struct snd_pcm_substream *substream, | |
287 | struct snd_pcm_hw_params *params, | |
288 | struct snd_soc_dai *dai) | |
289 | { | |
290 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
291 | struct snd_soc_codec *codec = rtd->codec; | |
292 | struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); | |
293 | int i; | |
294 | u16 clocking = 0; | |
295 | u16 af = 0; | |
296 | ||
297 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
298 | if (coeff_div[i].rate != params_rate(params)) | |
299 | continue; | |
300 | ||
301 | if (coeff_div[i].mclk == wm8737->mclk) | |
302 | break; | |
303 | ||
304 | if (coeff_div[i].mclk == wm8737->mclk * 2) { | |
305 | clocking |= WM8737_CLKDIV2; | |
306 | break; | |
307 | } | |
308 | } | |
309 | ||
310 | if (i == ARRAY_SIZE(coeff_div)) { | |
311 | dev_err(codec->dev, "%dHz MCLK can't support %dHz\n", | |
312 | wm8737->mclk, params_rate(params)); | |
313 | return -EINVAL; | |
314 | } | |
315 | ||
316 | clocking |= coeff_div[i].usb | (coeff_div[i].sr << WM8737_SR_SHIFT); | |
317 | ||
318 | switch (params_format(params)) { | |
319 | case SNDRV_PCM_FORMAT_S16_LE: | |
320 | break; | |
321 | case SNDRV_PCM_FORMAT_S20_3LE: | |
322 | af |= 0x8; | |
323 | break; | |
324 | case SNDRV_PCM_FORMAT_S24_LE: | |
325 | af |= 0x10; | |
326 | break; | |
327 | case SNDRV_PCM_FORMAT_S32_LE: | |
328 | af |= 0x18; | |
329 | break; | |
330 | default: | |
331 | return -EINVAL; | |
332 | } | |
333 | ||
334 | snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af); | |
335 | snd_soc_update_bits(codec, WM8737_CLOCKING, | |
336 | WM8737_USB_MODE | WM8737_CLKDIV2 | WM8737_SR_MASK, | |
337 | clocking); | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | static int wm8737_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
343 | int clk_id, unsigned int freq, int dir) | |
344 | { | |
345 | struct snd_soc_codec *codec = codec_dai->codec; | |
346 | struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); | |
347 | int i; | |
348 | ||
349 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
350 | if (freq == coeff_div[i].mclk || | |
351 | freq == coeff_div[i].mclk * 2) { | |
352 | wm8737->mclk = freq; | |
353 | return 0; | |
354 | } | |
355 | } | |
356 | ||
357 | dev_err(codec->dev, "MCLK rate %dHz not supported\n", freq); | |
358 | ||
359 | return -EINVAL; | |
360 | } | |
361 | ||
362 | ||
363 | static int wm8737_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
364 | unsigned int fmt) | |
365 | { | |
366 | struct snd_soc_codec *codec = codec_dai->codec; | |
367 | u16 af = 0; | |
368 | ||
369 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
370 | case SND_SOC_DAIFMT_CBM_CFM: | |
371 | af |= WM8737_MS; | |
372 | break; | |
373 | case SND_SOC_DAIFMT_CBS_CFS: | |
374 | break; | |
375 | default: | |
376 | return -EINVAL; | |
377 | } | |
378 | ||
379 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
380 | case SND_SOC_DAIFMT_I2S: | |
381 | af |= 0x2; | |
382 | break; | |
383 | case SND_SOC_DAIFMT_RIGHT_J: | |
384 | break; | |
385 | case SND_SOC_DAIFMT_LEFT_J: | |
386 | af |= 0x1; | |
387 | break; | |
388 | case SND_SOC_DAIFMT_DSP_A: | |
389 | af |= 0x3; | |
390 | break; | |
391 | case SND_SOC_DAIFMT_DSP_B: | |
392 | af |= 0x13; | |
393 | break; | |
394 | default: | |
395 | return -EINVAL; | |
396 | } | |
397 | ||
398 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
399 | case SND_SOC_DAIFMT_NB_NF: | |
400 | break; | |
401 | case SND_SOC_DAIFMT_NB_IF: | |
402 | af |= WM8737_LRP; | |
403 | break; | |
404 | default: | |
405 | return -EINVAL; | |
406 | } | |
407 | ||
408 | snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT, | |
409 | WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af); | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | static int wm8737_set_bias_level(struct snd_soc_codec *codec, | |
415 | enum snd_soc_bias_level level) | |
416 | { | |
417 | struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); | |
418 | int ret; | |
419 | ||
420 | switch (level) { | |
421 | case SND_SOC_BIAS_ON: | |
422 | break; | |
423 | ||
424 | case SND_SOC_BIAS_PREPARE: | |
425 | /* VMID at 2*75k */ | |
426 | snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, | |
427 | WM8737_VMIDSEL_MASK, 0); | |
428 | break; | |
429 | ||
430 | case SND_SOC_BIAS_STANDBY: | |
431 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { | |
432 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), | |
433 | wm8737->supplies); | |
434 | if (ret != 0) { | |
435 | dev_err(codec->dev, | |
436 | "Failed to enable supplies: %d\n", | |
437 | ret); | |
438 | return ret; | |
439 | } | |
440 | ||
441 | snd_soc_cache_sync(codec); | |
442 | ||
443 | /* Fast VMID ramp at 2*2.5k */ | |
444 | snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, | |
445 | WM8737_VMIDSEL_MASK, 0x4); | |
446 | ||
447 | /* Bring VMID up */ | |
448 | snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT, | |
449 | WM8737_VMID_MASK | | |
450 | WM8737_VREF_MASK, | |
451 | WM8737_VMID_MASK | | |
452 | WM8737_VREF_MASK); | |
453 | ||
454 | msleep(500); | |
455 | } | |
456 | ||
457 | /* VMID at 2*300k */ | |
458 | snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL, | |
459 | WM8737_VMIDSEL_MASK, 2); | |
460 | ||
461 | break; | |
462 | ||
463 | case SND_SOC_BIAS_OFF: | |
464 | snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT, | |
465 | WM8737_VMID_MASK | WM8737_VREF_MASK, 0); | |
466 | ||
467 | regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), | |
468 | wm8737->supplies); | |
469 | break; | |
470 | } | |
471 | ||
472 | codec->dapm.bias_level = level; | |
473 | return 0; | |
474 | } | |
475 | ||
476 | #define WM8737_RATES SNDRV_PCM_RATE_8000_96000 | |
477 | ||
478 | #define WM8737_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
479 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
480 | ||
481 | static struct snd_soc_dai_ops wm8737_dai_ops = { | |
482 | .hw_params = wm8737_hw_params, | |
483 | .set_sysclk = wm8737_set_dai_sysclk, | |
484 | .set_fmt = wm8737_set_dai_fmt, | |
485 | }; | |
486 | ||
487 | static struct snd_soc_dai_driver wm8737_dai = { | |
488 | .name = "wm8737", | |
489 | .capture = { | |
490 | .stream_name = "Capture", | |
491 | .channels_min = 2, /* Mono modes not yet supported */ | |
492 | .channels_max = 2, | |
493 | .rates = WM8737_RATES, | |
494 | .formats = WM8737_FORMATS, | |
495 | }, | |
496 | .ops = &wm8737_dai_ops, | |
497 | }; | |
498 | ||
499 | #ifdef CONFIG_PM | |
500 | static int wm8737_suspend(struct snd_soc_codec *codec, pm_message_t state) | |
501 | { | |
502 | wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static int wm8737_resume(struct snd_soc_codec *codec) | |
507 | { | |
508 | wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
509 | return 0; | |
510 | } | |
511 | #else | |
512 | #define wm8737_suspend NULL | |
513 | #define wm8737_resume NULL | |
514 | #endif | |
515 | ||
516 | static int wm8737_probe(struct snd_soc_codec *codec) | |
517 | { | |
518 | struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); | |
519 | int ret, i; | |
520 | ||
521 | codec->hw_write = (hw_write_t)i2c_master_send; | |
522 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8737->control_type); | |
523 | if (ret != 0) { | |
524 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
525 | return ret; | |
526 | } | |
527 | ||
528 | for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++) | |
529 | wm8737->supplies[i].supply = wm8737_supply_names[i]; | |
530 | ||
531 | ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8737->supplies), | |
532 | wm8737->supplies); | |
533 | if (ret != 0) { | |
534 | dev_err(codec->dev, "Failed to request supplies: %d\n", ret); | |
535 | return ret; | |
536 | } | |
537 | ||
538 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies), | |
539 | wm8737->supplies); | |
540 | if (ret != 0) { | |
541 | dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); | |
542 | goto err_get; | |
543 | } | |
544 | ||
545 | ret = wm8737_reset(codec); | |
546 | if (ret < 0) { | |
547 | dev_err(codec->dev, "Failed to issue reset\n"); | |
548 | goto err_enable; | |
549 | } | |
550 | ||
551 | snd_soc_update_bits(codec, WM8737_LEFT_PGA_VOLUME, WM8737_LVU, | |
552 | WM8737_LVU); | |
553 | snd_soc_update_bits(codec, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU, | |
554 | WM8737_RVU); | |
555 | ||
556 | wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
557 | ||
558 | /* Bias level configuration will have done an extra enable */ | |
559 | regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); | |
560 | ||
561 | snd_soc_add_controls(codec, wm8737_snd_controls, | |
562 | ARRAY_SIZE(wm8737_snd_controls)); | |
563 | wm8737_add_widgets(codec); | |
564 | ||
565 | return 0; | |
566 | ||
567 | err_enable: | |
568 | regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); | |
569 | err_get: | |
570 | regulator_bulk_free(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); | |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
575 | static int wm8737_remove(struct snd_soc_codec *codec) | |
576 | { | |
577 | struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec); | |
578 | ||
579 | wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
580 | regulator_bulk_free(ARRAY_SIZE(wm8737->supplies), wm8737->supplies); | |
581 | return 0; | |
582 | } | |
583 | ||
584 | static struct snd_soc_codec_driver soc_codec_dev_wm8737 = { | |
585 | .probe = wm8737_probe, | |
586 | .remove = wm8737_remove, | |
587 | .suspend = wm8737_suspend, | |
588 | .resume = wm8737_resume, | |
589 | .set_bias_level = wm8737_set_bias_level, | |
590 | ||
591 | .reg_cache_size = WM8737_REGISTER_COUNT - 1, /* Skip reset */ | |
592 | .reg_word_size = sizeof(u16), | |
593 | .reg_cache_default = wm8737_reg, | |
594 | }; | |
595 | ||
596 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
597 | static __devinit int wm8737_i2c_probe(struct i2c_client *i2c, | |
598 | const struct i2c_device_id *id) | |
599 | { | |
600 | struct wm8737_priv *wm8737; | |
601 | int ret; | |
602 | ||
603 | wm8737 = kzalloc(sizeof(struct wm8737_priv), GFP_KERNEL); | |
604 | if (wm8737 == NULL) | |
605 | return -ENOMEM; | |
606 | ||
607 | i2c_set_clientdata(i2c, wm8737); | |
608 | wm8737->control_type = SND_SOC_I2C; | |
609 | ||
610 | ret = snd_soc_register_codec(&i2c->dev, | |
611 | &soc_codec_dev_wm8737, &wm8737_dai, 1); | |
612 | if (ret < 0) | |
613 | kfree(wm8737); | |
614 | return ret; | |
615 | ||
616 | } | |
617 | ||
618 | static __devexit int wm8737_i2c_remove(struct i2c_client *client) | |
619 | { | |
620 | snd_soc_unregister_codec(&client->dev); | |
621 | kfree(i2c_get_clientdata(client)); | |
622 | return 0; | |
623 | } | |
624 | ||
625 | static const struct i2c_device_id wm8737_i2c_id[] = { | |
626 | { "wm8737", 0 }, | |
627 | { } | |
628 | }; | |
629 | MODULE_DEVICE_TABLE(i2c, wm8737_i2c_id); | |
630 | ||
631 | static struct i2c_driver wm8737_i2c_driver = { | |
632 | .driver = { | |
633 | .name = "wm8737", | |
634 | .owner = THIS_MODULE, | |
635 | }, | |
636 | .probe = wm8737_i2c_probe, | |
637 | .remove = __devexit_p(wm8737_i2c_remove), | |
638 | .id_table = wm8737_i2c_id, | |
639 | }; | |
640 | #endif | |
641 | ||
642 | #if defined(CONFIG_SPI_MASTER) | |
643 | static int __devinit wm8737_spi_probe(struct spi_device *spi) | |
644 | { | |
645 | struct wm8737_priv *wm8737; | |
646 | int ret; | |
647 | ||
648 | wm8737 = kzalloc(sizeof(struct wm8737_priv), GFP_KERNEL); | |
649 | if (wm8737 == NULL) | |
650 | return -ENOMEM; | |
651 | ||
652 | wm8737->control_type = SND_SOC_SPI; | |
653 | spi_set_drvdata(spi, wm8737); | |
654 | ||
655 | ret = snd_soc_register_codec(&spi->dev, | |
656 | &soc_codec_dev_wm8737, &wm8737_dai, 1); | |
657 | if (ret < 0) | |
658 | kfree(wm8737); | |
659 | return ret; | |
660 | } | |
661 | ||
662 | static int __devexit wm8737_spi_remove(struct spi_device *spi) | |
663 | { | |
664 | snd_soc_unregister_codec(&spi->dev); | |
665 | kfree(spi_get_drvdata(spi)); | |
666 | return 0; | |
667 | } | |
668 | ||
669 | static struct spi_driver wm8737_spi_driver = { | |
670 | .driver = { | |
671 | .name = "wm8737", | |
672 | .owner = THIS_MODULE, | |
673 | }, | |
674 | .probe = wm8737_spi_probe, | |
675 | .remove = __devexit_p(wm8737_spi_remove), | |
676 | }; | |
677 | #endif /* CONFIG_SPI_MASTER */ | |
678 | ||
679 | static int __init wm8737_modinit(void) | |
680 | { | |
681 | int ret; | |
682 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
683 | ret = i2c_add_driver(&wm8737_i2c_driver); | |
684 | if (ret != 0) { | |
685 | printk(KERN_ERR "Failed to register WM8737 I2C driver: %d\n", | |
686 | ret); | |
687 | } | |
688 | #endif | |
689 | #if defined(CONFIG_SPI_MASTER) | |
690 | ret = spi_register_driver(&wm8737_spi_driver); | |
691 | if (ret != 0) { | |
692 | printk(KERN_ERR "Failed to register WM8737 SPI driver: %d\n", | |
693 | ret); | |
694 | } | |
695 | #endif | |
696 | return 0; | |
697 | } | |
698 | module_init(wm8737_modinit); | |
699 | ||
700 | static void __exit wm8737_exit(void) | |
701 | { | |
702 | #if defined(CONFIG_SPI_MASTER) | |
703 | spi_unregister_driver(&wm8737_spi_driver); | |
704 | #endif | |
705 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
706 | i2c_del_driver(&wm8737_i2c_driver); | |
707 | #endif | |
708 | } | |
709 | module_exit(wm8737_exit); | |
710 | ||
711 | MODULE_DESCRIPTION("ASoC WM8737 driver"); | |
712 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
713 | MODULE_LICENSE("GPL"); |