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1 | /* |
2 | * wm8955.c -- WM8955 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2009 Wolfson Microelectronics plc | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
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 <sound/core.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/soc.h> | |
25 | #include <sound/soc-dapm.h> | |
26 | #include <sound/initval.h> | |
27 | #include <sound/tlv.h> | |
28 | #include <sound/wm8955.h> | |
29 | ||
30 | #include "wm8955.h" | |
31 | ||
32 | static struct snd_soc_codec *wm8955_codec; | |
33 | struct snd_soc_codec_device soc_codec_dev_wm8955; | |
34 | ||
35 | #define WM8955_NUM_SUPPLIES 4 | |
36 | static const char *wm8955_supply_names[WM8955_NUM_SUPPLIES] = { | |
37 | "DCVDD", | |
38 | "DBVDD", | |
39 | "HPVDD", | |
40 | "AVDD", | |
41 | }; | |
42 | ||
43 | /* codec private data */ | |
44 | struct wm8955_priv { | |
45 | struct snd_soc_codec codec; | |
46 | u16 reg_cache[WM8955_MAX_REGISTER + 1]; | |
47 | ||
48 | unsigned int mclk_rate; | |
49 | ||
50 | int deemph; | |
51 | int fs; | |
52 | ||
53 | struct regulator_bulk_data supplies[WM8955_NUM_SUPPLIES]; | |
54 | ||
55 | struct wm8955_pdata *pdata; | |
56 | }; | |
57 | ||
58 | static const u16 wm8955_reg[WM8955_MAX_REGISTER + 1] = { | |
59 | 0x0000, /* R0 */ | |
60 | 0x0000, /* R1 */ | |
61 | 0x0079, /* R2 - LOUT1 volume */ | |
62 | 0x0079, /* R3 - ROUT1 volume */ | |
63 | 0x0000, /* R4 */ | |
64 | 0x0008, /* R5 - DAC Control */ | |
65 | 0x0000, /* R6 */ | |
66 | 0x000A, /* R7 - Audio Interface */ | |
67 | 0x0000, /* R8 - Sample Rate */ | |
68 | 0x0000, /* R9 */ | |
69 | 0x00FF, /* R10 - Left DAC volume */ | |
70 | 0x00FF, /* R11 - Right DAC volume */ | |
71 | 0x000F, /* R12 - Bass control */ | |
72 | 0x000F, /* R13 - Treble control */ | |
73 | 0x0000, /* R14 */ | |
74 | 0x0000, /* R15 - Reset */ | |
75 | 0x0000, /* R16 */ | |
76 | 0x0000, /* R17 */ | |
77 | 0x0000, /* R18 */ | |
78 | 0x0000, /* R19 */ | |
79 | 0x0000, /* R20 */ | |
80 | 0x0000, /* R21 */ | |
81 | 0x0000, /* R22 */ | |
82 | 0x00C1, /* R23 - Additional control (1) */ | |
83 | 0x0000, /* R24 - Additional control (2) */ | |
84 | 0x0000, /* R25 - Power Management (1) */ | |
85 | 0x0000, /* R26 - Power Management (2) */ | |
86 | 0x0000, /* R27 - Additional Control (3) */ | |
87 | 0x0000, /* R28 */ | |
88 | 0x0000, /* R29 */ | |
89 | 0x0000, /* R30 */ | |
90 | 0x0000, /* R31 */ | |
91 | 0x0000, /* R32 */ | |
92 | 0x0000, /* R33 */ | |
93 | 0x0050, /* R34 - Left out Mix (1) */ | |
94 | 0x0050, /* R35 - Left out Mix (2) */ | |
95 | 0x0050, /* R36 - Right out Mix (1) */ | |
96 | 0x0050, /* R37 - Right Out Mix (2) */ | |
97 | 0x0050, /* R38 - Mono out Mix (1) */ | |
98 | 0x0050, /* R39 - Mono out Mix (2) */ | |
99 | 0x0079, /* R40 - LOUT2 volume */ | |
100 | 0x0079, /* R41 - ROUT2 volume */ | |
101 | 0x0079, /* R42 - MONOOUT volume */ | |
102 | 0x0000, /* R43 - Clocking / PLL */ | |
103 | 0x0103, /* R44 - PLL Control 1 */ | |
104 | 0x0024, /* R45 - PLL Control 2 */ | |
105 | 0x01BA, /* R46 - PLL Control 3 */ | |
106 | 0x0000, /* R47 */ | |
107 | 0x0000, /* R48 */ | |
108 | 0x0000, /* R49 */ | |
109 | 0x0000, /* R50 */ | |
110 | 0x0000, /* R51 */ | |
111 | 0x0000, /* R52 */ | |
112 | 0x0000, /* R53 */ | |
113 | 0x0000, /* R54 */ | |
114 | 0x0000, /* R55 */ | |
115 | 0x0000, /* R56 */ | |
116 | 0x0000, /* R57 */ | |
117 | 0x0000, /* R58 */ | |
118 | 0x0000, /* R59 - PLL Control 4 */ | |
119 | }; | |
120 | ||
121 | static int wm8955_reset(struct snd_soc_codec *codec) | |
122 | { | |
123 | return snd_soc_write(codec, WM8955_RESET, 0); | |
124 | } | |
125 | ||
126 | struct pll_factors { | |
127 | int n; | |
128 | int k; | |
129 | int outdiv; | |
130 | }; | |
131 | ||
132 | /* The size in bits of the FLL divide multiplied by 10 | |
133 | * to allow rounding later */ | |
134 | #define FIXED_FLL_SIZE ((1 << 22) * 10) | |
135 | ||
136 | static int wm8995_pll_factors(struct device *dev, | |
137 | int Fref, int Fout, struct pll_factors *pll) | |
138 | { | |
139 | u64 Kpart; | |
140 | unsigned int K, Ndiv, Nmod, target; | |
141 | ||
142 | dev_dbg(dev, "Fref=%u Fout=%u\n", Fref, Fout); | |
143 | ||
144 | /* The oscilator should run at should be 90-100MHz, and | |
145 | * there's a divide by 4 plus an optional divide by 2 in the | |
146 | * output path to generate the system clock. The clock table | |
147 | * is sortd so we should always generate a suitable target. */ | |
148 | target = Fout * 4; | |
149 | if (target < 90000000) { | |
150 | pll->outdiv = 1; | |
151 | target *= 2; | |
152 | } else { | |
153 | pll->outdiv = 0; | |
154 | } | |
155 | ||
156 | WARN_ON(target < 90000000 || target > 100000000); | |
157 | ||
158 | dev_dbg(dev, "Fvco=%dHz\n", target); | |
159 | ||
160 | /* Now, calculate N.K */ | |
161 | Ndiv = target / Fref; | |
162 | ||
163 | pll->n = Ndiv; | |
164 | Nmod = target % Fref; | |
165 | dev_dbg(dev, "Nmod=%d\n", Nmod); | |
166 | ||
167 | /* Calculate fractional part - scale up so we can round. */ | |
168 | Kpart = FIXED_FLL_SIZE * (long long)Nmod; | |
169 | ||
170 | do_div(Kpart, Fref); | |
171 | ||
172 | K = Kpart & 0xFFFFFFFF; | |
173 | ||
174 | if ((K % 10) >= 5) | |
175 | K += 5; | |
176 | ||
177 | /* Move down to proper range now rounding is done */ | |
178 | pll->k = K / 10; | |
179 | ||
180 | dev_dbg(dev, "N=%x K=%x OUTDIV=%x\n", pll->n, pll->k, pll->outdiv); | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | /* Lookup table specifiying SRATE (table 25 in datasheet); some of the | |
186 | * output frequencies have been rounded to the standard frequencies | |
187 | * they are intended to match where the error is slight. */ | |
188 | static struct { | |
189 | int mclk; | |
190 | int fs; | |
191 | int usb; | |
192 | int sr; | |
193 | } clock_cfgs[] = { | |
194 | { 18432000, 8000, 0, 3, }, | |
195 | { 18432000, 12000, 0, 9, }, | |
196 | { 18432000, 16000, 0, 11, }, | |
197 | { 18432000, 24000, 0, 29, }, | |
198 | { 18432000, 32000, 0, 13, }, | |
199 | { 18432000, 48000, 0, 1, }, | |
200 | { 18432000, 96000, 0, 15, }, | |
201 | ||
202 | { 16934400, 8018, 0, 19, }, | |
203 | { 16934400, 11025, 0, 25, }, | |
204 | { 16934400, 22050, 0, 27, }, | |
205 | { 16934400, 44100, 0, 17, }, | |
206 | { 16934400, 88200, 0, 31, }, | |
207 | ||
208 | { 12000000, 8000, 1, 2, }, | |
209 | { 12000000, 11025, 1, 25, }, | |
210 | { 12000000, 12000, 1, 8, }, | |
211 | { 12000000, 16000, 1, 10, }, | |
212 | { 12000000, 22050, 1, 27, }, | |
213 | { 12000000, 24000, 1, 28, }, | |
214 | { 12000000, 32000, 1, 12, }, | |
215 | { 12000000, 44100, 1, 17, }, | |
216 | { 12000000, 48000, 1, 0, }, | |
217 | { 12000000, 88200, 1, 31, }, | |
218 | { 12000000, 96000, 1, 14, }, | |
219 | ||
220 | { 12288000, 8000, 0, 2, }, | |
221 | { 12288000, 12000, 0, 8, }, | |
222 | { 12288000, 16000, 0, 10, }, | |
223 | { 12288000, 24000, 0, 28, }, | |
224 | { 12288000, 32000, 0, 12, }, | |
225 | { 12288000, 48000, 0, 0, }, | |
226 | { 12288000, 96000, 0, 14, }, | |
227 | ||
228 | { 12289600, 8018, 0, 18, }, | |
229 | { 12289600, 11025, 0, 24, }, | |
230 | { 12289600, 22050, 0, 26, }, | |
231 | { 11289600, 44100, 0, 16, }, | |
232 | { 11289600, 88200, 0, 31, }, | |
233 | }; | |
234 | ||
235 | static int wm8955_configure_clocking(struct snd_soc_codec *codec) | |
236 | { | |
237 | struct wm8955_priv *wm8955 = codec->private_data; | |
238 | int i, ret, val; | |
239 | int clocking = 0; | |
240 | int srate = 0; | |
241 | int sr = -1; | |
242 | struct pll_factors pll; | |
243 | ||
244 | /* If we're not running a sample rate currently just pick one */ | |
245 | if (wm8955->fs == 0) | |
246 | wm8955->fs = 8000; | |
247 | ||
248 | /* Can we generate an exact output? */ | |
249 | for (i = 0; i < ARRAY_SIZE(clock_cfgs); i++) { | |
250 | if (wm8955->fs != clock_cfgs[i].fs) | |
251 | continue; | |
252 | sr = i; | |
253 | ||
254 | if (wm8955->mclk_rate == clock_cfgs[i].mclk) | |
255 | break; | |
256 | } | |
257 | ||
258 | /* We should never get here with an unsupported sample rate */ | |
259 | if (sr == -1) { | |
260 | dev_err(codec->dev, "Sample rate %dHz unsupported\n", | |
261 | wm8955->fs); | |
262 | WARN_ON(sr == -1); | |
263 | return -EINVAL; | |
264 | } | |
265 | ||
266 | if (i == ARRAY_SIZE(clock_cfgs)) { | |
267 | /* If we can't generate the right clock from MCLK then | |
268 | * we should configure the PLL to supply us with an | |
269 | * appropriate clock. | |
270 | */ | |
271 | clocking |= WM8955_MCLKSEL; | |
272 | ||
273 | /* Use the last divider configuration we saw for the | |
274 | * sample rate. */ | |
275 | ret = wm8995_pll_factors(codec->dev, wm8955->mclk_rate, | |
276 | clock_cfgs[sr].mclk, &pll); | |
277 | if (ret != 0) { | |
278 | dev_err(codec->dev, | |
279 | "Unable to generate %dHz from %dHz MCLK\n", | |
280 | wm8955->fs, wm8955->mclk_rate); | |
281 | return -EINVAL; | |
282 | } | |
283 | ||
284 | snd_soc_update_bits(codec, WM8955_PLL_CONTROL_1, | |
285 | WM8955_N_MASK | WM8955_K_21_18_MASK, | |
286 | (pll.n << WM8955_N_SHIFT) | | |
287 | pll.k >> 18); | |
288 | snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2, | |
289 | WM8955_K_17_9_MASK, | |
290 | (pll.k >> 9) & WM8955_K_17_9_MASK); | |
291 | snd_soc_update_bits(codec, WM8955_PLL_CONTROL_2, | |
292 | WM8955_K_8_0_MASK, | |
293 | pll.k & WM8955_K_8_0_MASK); | |
294 | if (pll.k) | |
295 | snd_soc_update_bits(codec, WM8955_PLL_CONTROL_4, | |
296 | WM8955_KEN, WM8955_KEN); | |
297 | else | |
298 | snd_soc_update_bits(codec, WM8955_PLL_CONTROL_4, | |
299 | WM8955_KEN, 0); | |
300 | ||
301 | if (pll.outdiv) | |
302 | val = WM8955_PLL_RB | WM8955_PLLOUTDIV2; | |
303 | else | |
304 | val = WM8955_PLL_RB; | |
305 | ||
306 | /* Now start the PLL running */ | |
307 | snd_soc_update_bits(codec, WM8955_CLOCKING_PLL, | |
308 | WM8955_PLL_RB | WM8955_PLLOUTDIV2, val); | |
309 | snd_soc_update_bits(codec, WM8955_CLOCKING_PLL, | |
310 | WM8955_PLLEN, WM8955_PLLEN); | |
311 | } | |
312 | ||
313 | srate = clock_cfgs[sr].usb | (clock_cfgs[sr].sr << WM8955_SR_SHIFT); | |
314 | ||
315 | snd_soc_update_bits(codec, WM8955_SAMPLE_RATE, | |
316 | WM8955_USB | WM8955_SR_MASK, srate); | |
317 | snd_soc_update_bits(codec, WM8955_CLOCKING_PLL, | |
318 | WM8955_MCLKSEL, clocking); | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | static int wm8955_sysclk(struct snd_soc_dapm_widget *w, | |
324 | struct snd_kcontrol *kcontrol, int event) | |
325 | { | |
326 | struct snd_soc_codec *codec = w->codec; | |
327 | int ret = 0; | |
328 | ||
329 | /* Always disable the clocks - if we're doing reconfiguration this | |
330 | * avoids misclocking. | |
331 | */ | |
332 | snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1, | |
333 | WM8955_DIGENB, 0); | |
334 | snd_soc_update_bits(codec, WM8955_CLOCKING_PLL, | |
335 | WM8955_PLL_RB | WM8955_PLLEN, 0); | |
336 | ||
337 | switch (event) { | |
338 | case SND_SOC_DAPM_POST_PMD: | |
339 | break; | |
340 | case SND_SOC_DAPM_PRE_PMU: | |
341 | ret = wm8955_configure_clocking(codec); | |
342 | break; | |
343 | default: | |
344 | ret = -EINVAL; | |
345 | break; | |
346 | } | |
347 | ||
348 | return ret; | |
349 | } | |
350 | ||
351 | static int deemph_settings[] = { 0, 32000, 44100, 48000 }; | |
352 | ||
353 | static int wm8955_set_deemph(struct snd_soc_codec *codec) | |
354 | { | |
355 | struct wm8955_priv *wm8955 = codec->private_data; | |
356 | int val, i, best; | |
357 | ||
358 | /* If we're using deemphasis select the nearest available sample | |
359 | * rate. | |
360 | */ | |
361 | if (wm8955->deemph) { | |
362 | best = 1; | |
363 | for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) { | |
364 | if (abs(deemph_settings[i] - wm8955->fs) < | |
365 | abs(deemph_settings[best] - wm8955->fs)) | |
366 | best = i; | |
367 | } | |
368 | ||
369 | val = best << WM8955_DEEMPH_SHIFT; | |
370 | } else { | |
371 | val = 0; | |
372 | } | |
373 | ||
374 | dev_dbg(codec->dev, "Set deemphasis %d\n", val); | |
375 | ||
376 | return snd_soc_update_bits(codec, WM8955_DAC_CONTROL, | |
377 | WM8955_DEEMPH_MASK, val); | |
378 | } | |
379 | ||
380 | static int wm8955_get_deemph(struct snd_kcontrol *kcontrol, | |
381 | struct snd_ctl_elem_value *ucontrol) | |
382 | { | |
383 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
384 | struct wm8955_priv *wm8955 = codec->private_data; | |
385 | ||
386 | return wm8955->deemph; | |
387 | } | |
388 | ||
389 | static int wm8955_put_deemph(struct snd_kcontrol *kcontrol, | |
390 | struct snd_ctl_elem_value *ucontrol) | |
391 | { | |
392 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
393 | struct wm8955_priv *wm8955 = codec->private_data; | |
394 | int deemph = ucontrol->value.enumerated.item[0]; | |
395 | ||
396 | if (deemph > 1) | |
397 | return -EINVAL; | |
398 | ||
399 | wm8955->deemph = deemph; | |
400 | ||
401 | return wm8955_set_deemph(codec); | |
402 | } | |
403 | ||
404 | static const char *bass_mode_text[] = { | |
405 | "Linear", "Adaptive", | |
406 | }; | |
407 | ||
408 | static const struct soc_enum bass_mode = | |
409 | SOC_ENUM_SINGLE(WM8955_BASS_CONTROL, 7, 2, bass_mode_text); | |
410 | ||
411 | static const char *bass_cutoff_text[] = { | |
412 | "Low", "High" | |
413 | }; | |
414 | ||
415 | static const struct soc_enum bass_cutoff = | |
416 | SOC_ENUM_SINGLE(WM8955_BASS_CONTROL, 6, 2, bass_cutoff_text); | |
417 | ||
418 | static const char *treble_cutoff_text[] = { | |
419 | "High", "Low" | |
420 | }; | |
421 | ||
422 | static const struct soc_enum treble_cutoff = | |
423 | SOC_ENUM_SINGLE(WM8955_TREBLE_CONTROL, 6, 2, treble_cutoff_text); | |
424 | ||
425 | static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1); | |
426 | static const DECLARE_TLV_DB_SCALE(atten_tlv, -600, 600, 0); | |
427 | static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0); | |
428 | static const DECLARE_TLV_DB_SCALE(mono_tlv, -2100, 300, 0); | |
429 | static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); | |
430 | static const DECLARE_TLV_DB_SCALE(treble_tlv, -1200, 150, 1); | |
431 | ||
432 | static const struct snd_kcontrol_new wm8955_snd_controls[] = { | |
433 | SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8955_LEFT_DAC_VOLUME, | |
434 | WM8955_RIGHT_DAC_VOLUME, 0, 255, 0, digital_tlv), | |
435 | SOC_SINGLE_TLV("Playback Attenuation Volume", WM8955_DAC_CONTROL, 7, 1, 1, | |
436 | atten_tlv), | |
437 | SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0, | |
438 | wm8955_get_deemph, wm8955_put_deemph), | |
439 | ||
440 | SOC_ENUM("Bass Mode", bass_mode), | |
441 | SOC_ENUM("Bass Cutoff", bass_cutoff), | |
442 | SOC_SINGLE("Bass Volume", WM8955_BASS_CONTROL, 0, 15, 1), | |
443 | ||
444 | SOC_ENUM("Treble Cutoff", treble_cutoff), | |
445 | SOC_SINGLE_TLV("Treble Volume", WM8955_TREBLE_CONTROL, 0, 14, 1, treble_tlv), | |
446 | ||
447 | SOC_SINGLE_TLV("Left Bypass Volume", WM8955_LEFT_OUT_MIX_1, 4, 7, 1, | |
448 | bypass_tlv), | |
449 | SOC_SINGLE_TLV("Left Mono Volume", WM8955_LEFT_OUT_MIX_2, 4, 7, 1, | |
450 | bypass_tlv), | |
451 | ||
452 | SOC_SINGLE_TLV("Right Mono Volume", WM8955_RIGHT_OUT_MIX_1, 4, 7, 1, | |
453 | bypass_tlv), | |
454 | SOC_SINGLE_TLV("Right Bypass Volume", WM8955_RIGHT_OUT_MIX_2, 4, 7, 1, | |
455 | bypass_tlv), | |
456 | ||
457 | /* Not a stereo pair so they line up with the DAPM switches */ | |
458 | SOC_SINGLE_TLV("Mono Left Bypass Volume", WM8955_MONO_OUT_MIX_1, 4, 7, 1, | |
459 | mono_tlv), | |
460 | SOC_SINGLE_TLV("Mono Right Bypass Volume", WM8955_MONO_OUT_MIX_2, 4, 7, 1, | |
461 | mono_tlv), | |
462 | ||
463 | SOC_DOUBLE_R_TLV("Headphone Volume", WM8955_LOUT1_VOLUME, | |
464 | WM8955_ROUT1_VOLUME, 0, 127, 0, out_tlv), | |
465 | SOC_DOUBLE_R("Headphone ZC Switch", WM8955_LOUT1_VOLUME, | |
466 | WM8955_ROUT1_VOLUME, 7, 1, 0), | |
467 | ||
468 | SOC_DOUBLE_R_TLV("Speaker Volume", WM8955_LOUT2_VOLUME, | |
469 | WM8955_ROUT2_VOLUME, 0, 127, 0, out_tlv), | |
470 | SOC_DOUBLE_R("Speaker ZC Switch", WM8955_LOUT2_VOLUME, | |
471 | WM8955_ROUT2_VOLUME, 7, 1, 0), | |
472 | ||
473 | SOC_SINGLE_TLV("Mono Volume", WM8955_MONOOUT_VOLUME, 0, 127, 0, out_tlv), | |
474 | SOC_SINGLE("Mono ZC Switch", WM8955_MONOOUT_VOLUME, 7, 1, 0), | |
475 | }; | |
476 | ||
477 | static const struct snd_kcontrol_new lmixer[] = { | |
478 | SOC_DAPM_SINGLE("Playback Switch", WM8955_LEFT_OUT_MIX_1, 8, 1, 0), | |
479 | SOC_DAPM_SINGLE("Bypass Switch", WM8955_LEFT_OUT_MIX_1, 7, 1, 0), | |
480 | SOC_DAPM_SINGLE("Right Playback Switch", WM8955_LEFT_OUT_MIX_2, 8, 1, 0), | |
481 | SOC_DAPM_SINGLE("Mono Switch", WM8955_LEFT_OUT_MIX_2, 7, 1, 0), | |
482 | }; | |
483 | ||
484 | static const struct snd_kcontrol_new rmixer[] = { | |
485 | SOC_DAPM_SINGLE("Left Playback Switch", WM8955_RIGHT_OUT_MIX_1, 8, 1, 0), | |
486 | SOC_DAPM_SINGLE("Mono Switch", WM8955_RIGHT_OUT_MIX_1, 7, 1, 0), | |
487 | SOC_DAPM_SINGLE("Playback Switch", WM8955_RIGHT_OUT_MIX_2, 8, 1, 0), | |
488 | SOC_DAPM_SINGLE("Bypass Switch", WM8955_RIGHT_OUT_MIX_2, 7, 1, 0), | |
489 | }; | |
490 | ||
491 | static const struct snd_kcontrol_new mmixer[] = { | |
492 | SOC_DAPM_SINGLE("Left Playback Switch", WM8955_MONO_OUT_MIX_1, 8, 1, 0), | |
493 | SOC_DAPM_SINGLE("Left Bypass Switch", WM8955_MONO_OUT_MIX_1, 7, 1, 0), | |
494 | SOC_DAPM_SINGLE("Right Playback Switch", WM8955_MONO_OUT_MIX_2, 8, 1, 0), | |
495 | SOC_DAPM_SINGLE("Right Bypass Switch", WM8955_MONO_OUT_MIX_2, 7, 1, 0), | |
496 | }; | |
497 | ||
498 | static const struct snd_soc_dapm_widget wm8955_dapm_widgets[] = { | |
499 | SND_SOC_DAPM_INPUT("MONOIN-"), | |
500 | SND_SOC_DAPM_INPUT("MONOIN+"), | |
501 | SND_SOC_DAPM_INPUT("LINEINR"), | |
502 | SND_SOC_DAPM_INPUT("LINEINL"), | |
503 | ||
504 | SND_SOC_DAPM_PGA("Mono Input", SND_SOC_NOPM, 0, 0, NULL, 0), | |
505 | ||
506 | SND_SOC_DAPM_SUPPLY("SYSCLK", WM8955_POWER_MANAGEMENT_1, 0, 1, wm8955_sysclk, | |
507 | SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), | |
508 | SND_SOC_DAPM_SUPPLY("TSDEN", WM8955_ADDITIONAL_CONTROL_1, 8, 0, NULL, 0), | |
509 | ||
510 | SND_SOC_DAPM_DAC("DACL", "Playback", WM8955_POWER_MANAGEMENT_2, 8, 0), | |
511 | SND_SOC_DAPM_DAC("DACR", "Playback", WM8955_POWER_MANAGEMENT_2, 7, 0), | |
512 | ||
513 | SND_SOC_DAPM_PGA("LOUT1 PGA", WM8955_POWER_MANAGEMENT_2, 6, 0, NULL, 0), | |
514 | SND_SOC_DAPM_PGA("ROUT1 PGA", WM8955_POWER_MANAGEMENT_2, 5, 0, NULL, 0), | |
515 | SND_SOC_DAPM_PGA("LOUT2 PGA", WM8955_POWER_MANAGEMENT_2, 4, 0, NULL, 0), | |
516 | SND_SOC_DAPM_PGA("ROUT2 PGA", WM8955_POWER_MANAGEMENT_2, 3, 0, NULL, 0), | |
517 | SND_SOC_DAPM_PGA("MOUT PGA", WM8955_POWER_MANAGEMENT_2, 2, 0, NULL, 0), | |
518 | SND_SOC_DAPM_PGA("OUT3 PGA", WM8955_POWER_MANAGEMENT_2, 1, 0, NULL, 0), | |
519 | ||
520 | /* The names are chosen to make the control names nice */ | |
521 | SND_SOC_DAPM_MIXER("Left", SND_SOC_NOPM, 0, 0, | |
522 | lmixer, ARRAY_SIZE(lmixer)), | |
523 | SND_SOC_DAPM_MIXER("Right", SND_SOC_NOPM, 0, 0, | |
524 | rmixer, ARRAY_SIZE(rmixer)), | |
525 | SND_SOC_DAPM_MIXER("Mono", SND_SOC_NOPM, 0, 0, | |
526 | mmixer, ARRAY_SIZE(mmixer)), | |
527 | ||
528 | SND_SOC_DAPM_OUTPUT("LOUT1"), | |
529 | SND_SOC_DAPM_OUTPUT("ROUT1"), | |
530 | SND_SOC_DAPM_OUTPUT("LOUT2"), | |
531 | SND_SOC_DAPM_OUTPUT("ROUT2"), | |
532 | SND_SOC_DAPM_OUTPUT("MONOOUT"), | |
533 | SND_SOC_DAPM_OUTPUT("OUT3"), | |
534 | }; | |
535 | ||
536 | static const struct snd_soc_dapm_route wm8955_intercon[] = { | |
537 | { "DACL", NULL, "SYSCLK" }, | |
538 | { "DACR", NULL, "SYSCLK" }, | |
539 | ||
540 | { "Mono Input", NULL, "MONOIN-" }, | |
541 | { "Mono Input", NULL, "MONOIN+" }, | |
542 | ||
543 | { "Left", "Playback Switch", "DACL" }, | |
544 | { "Left", "Right Playback Switch", "DACR" }, | |
545 | { "Left", "Bypass Switch", "LINEINL" }, | |
546 | { "Left", "Mono Switch", "Mono Input" }, | |
547 | ||
548 | { "Right", "Playback Switch", "DACR" }, | |
549 | { "Right", "Left Playback Switch", "DACL" }, | |
550 | { "Right", "Bypass Switch", "LINEINR" }, | |
551 | { "Right", "Mono Switch", "Mono Input" }, | |
552 | ||
553 | { "Mono", "Left Playback Switch", "DACL" }, | |
554 | { "Mono", "Right Playback Switch", "DACR" }, | |
555 | { "Mono", "Left Bypass Switch", "LINEINL" }, | |
556 | { "Mono", "Right Bypass Switch", "LINEINR" }, | |
557 | ||
558 | { "LOUT1 PGA", NULL, "Left" }, | |
559 | { "LOUT1", NULL, "TSDEN" }, | |
560 | { "LOUT1", NULL, "LOUT1 PGA" }, | |
561 | ||
562 | { "ROUT1 PGA", NULL, "Right" }, | |
563 | { "ROUT1", NULL, "TSDEN" }, | |
564 | { "ROUT1", NULL, "ROUT1 PGA" }, | |
565 | ||
566 | { "LOUT2 PGA", NULL, "Left" }, | |
567 | { "LOUT2", NULL, "TSDEN" }, | |
568 | { "LOUT2", NULL, "LOUT2 PGA" }, | |
569 | ||
570 | { "ROUT2 PGA", NULL, "Right" }, | |
571 | { "ROUT2", NULL, "TSDEN" }, | |
572 | { "ROUT2", NULL, "ROUT2 PGA" }, | |
573 | ||
574 | { "MOUT PGA", NULL, "Mono" }, | |
575 | { "MONOOUT", NULL, "MOUT PGA" }, | |
576 | ||
577 | /* OUT3 not currently implemented */ | |
578 | { "OUT3", NULL, "OUT3 PGA" }, | |
579 | }; | |
580 | ||
581 | static int wm8955_add_widgets(struct snd_soc_codec *codec) | |
582 | { | |
583 | snd_soc_add_controls(codec, wm8955_snd_controls, | |
584 | ARRAY_SIZE(wm8955_snd_controls)); | |
585 | ||
586 | snd_soc_dapm_new_controls(codec, wm8955_dapm_widgets, | |
587 | ARRAY_SIZE(wm8955_dapm_widgets)); | |
588 | ||
589 | snd_soc_dapm_add_routes(codec, wm8955_intercon, | |
590 | ARRAY_SIZE(wm8955_intercon)); | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
595 | static int wm8955_hw_params(struct snd_pcm_substream *substream, | |
596 | struct snd_pcm_hw_params *params, | |
597 | struct snd_soc_dai *dai) | |
598 | { | |
599 | struct snd_soc_codec *codec = dai->codec; | |
600 | struct wm8955_priv *wm8955 = codec->private_data; | |
601 | int ret; | |
602 | int wl; | |
603 | ||
604 | switch (params_format(params)) { | |
605 | case SNDRV_PCM_FORMAT_S16_LE: | |
606 | wl = 0; | |
607 | break; | |
608 | case SNDRV_PCM_FORMAT_S20_3LE: | |
609 | wl = 0x4; | |
610 | break; | |
611 | case SNDRV_PCM_FORMAT_S24_LE: | |
612 | wl = 0x8; | |
613 | break; | |
614 | case SNDRV_PCM_FORMAT_S32_LE: | |
615 | wl = 0xc; | |
616 | break; | |
617 | default: | |
618 | return -EINVAL; | |
619 | } | |
620 | snd_soc_update_bits(codec, WM8955_AUDIO_INTERFACE, | |
621 | WM8955_WL_MASK, wl); | |
622 | ||
623 | wm8955->fs = params_rate(params); | |
624 | wm8955_set_deemph(codec); | |
625 | ||
626 | /* If the chip is clocked then disable the clocks and force a | |
627 | * reconfiguration, otherwise DAPM will power up the | |
628 | * clocks for us later. */ | |
629 | ret = snd_soc_read(codec, WM8955_POWER_MANAGEMENT_1); | |
630 | if (ret < 0) | |
631 | return ret; | |
632 | if (ret & WM8955_DIGENB) { | |
633 | snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1, | |
634 | WM8955_DIGENB, 0); | |
635 | snd_soc_update_bits(codec, WM8955_CLOCKING_PLL, | |
636 | WM8955_PLL_RB | WM8955_PLLEN, 0); | |
637 | ||
638 | wm8955_configure_clocking(codec); | |
639 | } | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
644 | ||
645 | static int wm8955_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
646 | unsigned int freq, int dir) | |
647 | { | |
648 | struct snd_soc_codec *codec = dai->codec; | |
649 | struct wm8955_priv *priv = codec->private_data; | |
650 | int div; | |
651 | ||
652 | switch (clk_id) { | |
653 | case WM8955_CLK_MCLK: | |
654 | if (freq > 15000000) { | |
655 | priv->mclk_rate = freq /= 2; | |
656 | div = WM8955_MCLKDIV2; | |
657 | } else { | |
658 | priv->mclk_rate = freq; | |
659 | div = 0; | |
660 | } | |
661 | ||
662 | snd_soc_update_bits(codec, WM8955_SAMPLE_RATE, | |
663 | WM8955_MCLKDIV2, div); | |
664 | break; | |
665 | ||
666 | default: | |
667 | return -EINVAL; | |
668 | } | |
669 | ||
670 | dev_dbg(dai->dev, "Clock source is %d at %uHz\n", clk_id, freq); | |
671 | ||
672 | return 0; | |
673 | } | |
674 | ||
675 | static int wm8955_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
676 | { | |
677 | struct snd_soc_codec *codec = dai->codec; | |
678 | u16 aif = 0; | |
679 | ||
680 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
681 | case SND_SOC_DAIFMT_CBS_CFS: | |
682 | break; | |
683 | case SND_SOC_DAIFMT_CBM_CFM: | |
684 | aif |= WM8955_MS; | |
685 | break; | |
686 | default: | |
687 | return -EINVAL; | |
688 | } | |
689 | ||
690 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
691 | case SND_SOC_DAIFMT_DSP_B: | |
692 | aif |= WM8955_LRP; | |
693 | case SND_SOC_DAIFMT_DSP_A: | |
694 | aif |= 0x3; | |
695 | break; | |
696 | case SND_SOC_DAIFMT_I2S: | |
697 | aif |= 0x2; | |
698 | break; | |
699 | case SND_SOC_DAIFMT_RIGHT_J: | |
700 | break; | |
701 | case SND_SOC_DAIFMT_LEFT_J: | |
702 | aif |= 0x1; | |
703 | break; | |
704 | default: | |
705 | return -EINVAL; | |
706 | } | |
707 | ||
708 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
709 | case SND_SOC_DAIFMT_DSP_A: | |
710 | case SND_SOC_DAIFMT_DSP_B: | |
711 | /* frame inversion not valid for DSP modes */ | |
712 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
713 | case SND_SOC_DAIFMT_NB_NF: | |
714 | break; | |
715 | case SND_SOC_DAIFMT_IB_NF: | |
716 | aif |= WM8955_BCLKINV; | |
717 | break; | |
718 | default: | |
719 | return -EINVAL; | |
720 | } | |
721 | break; | |
722 | ||
723 | case SND_SOC_DAIFMT_I2S: | |
724 | case SND_SOC_DAIFMT_RIGHT_J: | |
725 | case SND_SOC_DAIFMT_LEFT_J: | |
726 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
727 | case SND_SOC_DAIFMT_NB_NF: | |
728 | break; | |
729 | case SND_SOC_DAIFMT_IB_IF: | |
730 | aif |= WM8955_BCLKINV | WM8955_LRP; | |
731 | break; | |
732 | case SND_SOC_DAIFMT_IB_NF: | |
733 | aif |= WM8955_BCLKINV; | |
734 | break; | |
735 | case SND_SOC_DAIFMT_NB_IF: | |
736 | aif |= WM8955_LRP; | |
737 | break; | |
738 | default: | |
739 | return -EINVAL; | |
740 | } | |
741 | break; | |
742 | default: | |
743 | return -EINVAL; | |
744 | } | |
745 | ||
746 | snd_soc_update_bits(codec, WM8955_AUDIO_INTERFACE, | |
747 | WM8955_MS | WM8955_FORMAT_MASK | WM8955_BCLKINV | | |
748 | WM8955_LRP, aif); | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
753 | ||
754 | static int wm8955_digital_mute(struct snd_soc_dai *codec_dai, int mute) | |
755 | { | |
756 | struct snd_soc_codec *codec = codec_dai->codec; | |
757 | int val; | |
758 | ||
759 | if (mute) | |
760 | val = WM8955_DACMU; | |
761 | else | |
762 | val = 0; | |
763 | ||
764 | snd_soc_update_bits(codec, WM8955_DAC_CONTROL, WM8955_DACMU, val); | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
769 | static int wm8955_set_bias_level(struct snd_soc_codec *codec, | |
770 | enum snd_soc_bias_level level) | |
771 | { | |
772 | struct wm8955_priv *wm8955 = codec->private_data; | |
773 | int ret, i; | |
774 | ||
775 | switch (level) { | |
776 | case SND_SOC_BIAS_ON: | |
777 | break; | |
778 | ||
779 | case SND_SOC_BIAS_PREPARE: | |
780 | /* VMID resistance 2*50k */ | |
781 | snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1, | |
782 | WM8955_VMIDSEL_MASK, | |
783 | 0x1 << WM8955_VMIDSEL_SHIFT); | |
784 | ||
785 | /* Default bias current */ | |
786 | snd_soc_update_bits(codec, WM8955_ADDITIONAL_CONTROL_1, | |
787 | WM8955_VSEL_MASK, | |
788 | 0x2 << WM8955_VSEL_SHIFT); | |
789 | break; | |
790 | ||
791 | case SND_SOC_BIAS_STANDBY: | |
792 | if (codec->bias_level == SND_SOC_BIAS_OFF) { | |
793 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8955->supplies), | |
794 | wm8955->supplies); | |
795 | if (ret != 0) { | |
796 | dev_err(codec->dev, | |
797 | "Failed to enable supplies: %d\n", | |
798 | ret); | |
799 | return ret; | |
800 | } | |
801 | ||
802 | /* Sync back cached values if they're | |
803 | * different from the hardware default. | |
804 | */ | |
805 | for (i = 0; i < ARRAY_SIZE(wm8955->reg_cache); i++) { | |
806 | if (i == WM8955_RESET) | |
807 | continue; | |
808 | ||
809 | if (wm8955->reg_cache[i] == wm8955_reg[i]) | |
810 | continue; | |
811 | ||
812 | snd_soc_write(codec, i, wm8955->reg_cache[i]); | |
813 | } | |
814 | ||
815 | /* Enable VREF and VMID */ | |
816 | snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1, | |
817 | WM8955_VREF | | |
818 | WM8955_VMIDSEL_MASK, | |
819 | WM8955_VREF | | |
820 | 0x3 << WM8955_VREF_SHIFT); | |
821 | ||
822 | /* Let VMID ramp */ | |
823 | msleep(500); | |
824 | ||
825 | /* High resistance VROI to maintain outputs */ | |
826 | snd_soc_update_bits(codec, | |
827 | WM8955_ADDITIONAL_CONTROL_3, | |
828 | WM8955_VROI, WM8955_VROI); | |
829 | } | |
830 | ||
831 | /* Maintain VMID with 2*250k */ | |
832 | snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1, | |
833 | WM8955_VMIDSEL_MASK, | |
834 | 0x2 << WM8955_VMIDSEL_SHIFT); | |
835 | ||
836 | /* Minimum bias current */ | |
837 | snd_soc_update_bits(codec, WM8955_ADDITIONAL_CONTROL_1, | |
838 | WM8955_VSEL_MASK, 0); | |
839 | break; | |
840 | ||
841 | case SND_SOC_BIAS_OFF: | |
842 | /* Low resistance VROI to help discharge */ | |
843 | snd_soc_update_bits(codec, | |
844 | WM8955_ADDITIONAL_CONTROL_3, | |
845 | WM8955_VROI, 0); | |
846 | ||
847 | /* Turn off VMID and VREF */ | |
848 | snd_soc_update_bits(codec, WM8955_POWER_MANAGEMENT_1, | |
849 | WM8955_VREF | | |
850 | WM8955_VMIDSEL_MASK, 0); | |
851 | ||
852 | regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies), | |
853 | wm8955->supplies); | |
854 | break; | |
855 | } | |
856 | codec->bias_level = level; | |
857 | return 0; | |
858 | } | |
859 | ||
860 | #define WM8955_RATES SNDRV_PCM_RATE_8000_96000 | |
861 | ||
862 | #define WM8955_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
863 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
864 | ||
865 | static struct snd_soc_dai_ops wm8955_dai_ops = { | |
866 | .set_sysclk = wm8955_set_sysclk, | |
867 | .set_fmt = wm8955_set_fmt, | |
868 | .hw_params = wm8955_hw_params, | |
869 | .digital_mute = wm8955_digital_mute, | |
870 | }; | |
871 | ||
872 | struct snd_soc_dai wm8955_dai = { | |
873 | .name = "WM8955", | |
874 | .playback = { | |
875 | .stream_name = "Playback", | |
876 | .channels_min = 2, | |
877 | .channels_max = 2, | |
878 | .rates = WM8955_RATES, | |
879 | .formats = WM8955_FORMATS, | |
880 | }, | |
881 | .ops = &wm8955_dai_ops, | |
882 | }; | |
883 | EXPORT_SYMBOL_GPL(wm8955_dai); | |
884 | ||
885 | #ifdef CONFIG_PM | |
886 | static int wm8955_suspend(struct platform_device *pdev, pm_message_t state) | |
887 | { | |
888 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
889 | struct snd_soc_codec *codec = socdev->card->codec; | |
890 | ||
891 | wm8955_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | static int wm8955_resume(struct platform_device *pdev) | |
897 | { | |
898 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
899 | struct snd_soc_codec *codec = socdev->card->codec; | |
900 | ||
901 | wm8955_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
902 | ||
903 | return 0; | |
904 | } | |
905 | #else | |
906 | #define wm8955_suspend NULL | |
907 | #define wm8955_resume NULL | |
908 | #endif | |
909 | ||
910 | static int wm8955_probe(struct platform_device *pdev) | |
911 | { | |
912 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
913 | struct snd_soc_codec *codec; | |
914 | int ret = 0; | |
915 | ||
916 | if (wm8955_codec == NULL) { | |
917 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
918 | return -ENODEV; | |
919 | } | |
920 | ||
921 | socdev->card->codec = wm8955_codec; | |
922 | codec = wm8955_codec; | |
923 | ||
924 | /* register pcms */ | |
925 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
926 | if (ret < 0) { | |
927 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); | |
928 | goto pcm_err; | |
929 | } | |
930 | ||
931 | wm8955_add_widgets(codec); | |
932 | ||
933 | return ret; | |
934 | ||
935 | pcm_err: | |
936 | return ret; | |
937 | } | |
938 | ||
939 | static int wm8955_remove(struct platform_device *pdev) | |
940 | { | |
941 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
942 | ||
943 | snd_soc_free_pcms(socdev); | |
944 | snd_soc_dapm_free(socdev); | |
945 | ||
946 | return 0; | |
947 | } | |
948 | ||
949 | struct snd_soc_codec_device soc_codec_dev_wm8955 = { | |
950 | .probe = wm8955_probe, | |
951 | .remove = wm8955_remove, | |
952 | .suspend = wm8955_suspend, | |
953 | .resume = wm8955_resume, | |
954 | }; | |
955 | EXPORT_SYMBOL_GPL(soc_codec_dev_wm8955); | |
956 | ||
957 | static int wm8955_register(struct wm8955_priv *wm8955, | |
958 | enum snd_soc_control_type control) | |
959 | { | |
960 | int ret; | |
961 | struct snd_soc_codec *codec = &wm8955->codec; | |
962 | int i; | |
963 | ||
964 | if (wm8955_codec) { | |
965 | dev_err(codec->dev, "Another WM8955 is registered\n"); | |
966 | return -EINVAL; | |
967 | } | |
968 | ||
969 | mutex_init(&codec->mutex); | |
970 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
971 | INIT_LIST_HEAD(&codec->dapm_paths); | |
972 | ||
973 | codec->private_data = wm8955; | |
974 | codec->name = "WM8955"; | |
975 | codec->owner = THIS_MODULE; | |
976 | codec->bias_level = SND_SOC_BIAS_OFF; | |
977 | codec->set_bias_level = wm8955_set_bias_level; | |
978 | codec->dai = &wm8955_dai; | |
979 | codec->num_dai = 1; | |
980 | codec->reg_cache_size = WM8955_MAX_REGISTER; | |
981 | codec->reg_cache = &wm8955->reg_cache; | |
982 | ||
983 | memcpy(codec->reg_cache, wm8955_reg, sizeof(wm8955_reg)); | |
984 | ||
985 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, control); | |
986 | if (ret != 0) { | |
987 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
988 | goto err; | |
989 | } | |
990 | ||
991 | for (i = 0; i < ARRAY_SIZE(wm8955->supplies); i++) | |
992 | wm8955->supplies[i].supply = wm8955_supply_names[i]; | |
993 | ||
994 | ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8955->supplies), | |
995 | wm8955->supplies); | |
996 | if (ret != 0) { | |
997 | dev_err(codec->dev, "Failed to request supplies: %d\n", ret); | |
998 | goto err; | |
999 | } | |
1000 | ||
1001 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8955->supplies), | |
1002 | wm8955->supplies); | |
1003 | if (ret != 0) { | |
1004 | dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); | |
1005 | goto err_get; | |
1006 | } | |
1007 | ||
1008 | ret = wm8955_reset(codec); | |
1009 | if (ret < 0) { | |
1010 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); | |
1011 | goto err_enable; | |
1012 | } | |
1013 | ||
1014 | wm8955_dai.dev = codec->dev; | |
1015 | ||
1016 | /* Change some default settings - latch VU and enable ZC */ | |
1017 | wm8955->reg_cache[WM8955_LEFT_DAC_VOLUME] |= WM8955_LDVU; | |
1018 | wm8955->reg_cache[WM8955_RIGHT_DAC_VOLUME] |= WM8955_RDVU; | |
1019 | wm8955->reg_cache[WM8955_LOUT1_VOLUME] |= WM8955_LO1VU | WM8955_LO1ZC; | |
1020 | wm8955->reg_cache[WM8955_ROUT1_VOLUME] |= WM8955_RO1VU | WM8955_RO1ZC; | |
1021 | wm8955->reg_cache[WM8955_LOUT2_VOLUME] |= WM8955_LO2VU | WM8955_LO2ZC; | |
1022 | wm8955->reg_cache[WM8955_ROUT2_VOLUME] |= WM8955_RO2VU | WM8955_RO2ZC; | |
1023 | wm8955->reg_cache[WM8955_MONOOUT_VOLUME] |= WM8955_MOZC; | |
1024 | ||
1025 | /* Also enable adaptive bass boost by default */ | |
1026 | wm8955->reg_cache[WM8955_BASS_CONTROL] |= WM8955_BB; | |
1027 | ||
1028 | /* Set platform data values */ | |
1029 | if (wm8955->pdata) { | |
1030 | if (wm8955->pdata->out2_speaker) | |
1031 | wm8955->reg_cache[WM8955_ADDITIONAL_CONTROL_2] | |
1032 | |= WM8955_ROUT2INV; | |
1033 | ||
1034 | if (wm8955->pdata->monoin_diff) | |
1035 | wm8955->reg_cache[WM8955_MONO_OUT_MIX_1] | |
1036 | |= WM8955_DMEN; | |
1037 | } | |
1038 | ||
1039 | wm8955_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
1040 | ||
1041 | /* Bias level configuration will have done an extra enable */ | |
1042 | regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies), wm8955->supplies); | |
1043 | ||
1044 | wm8955_codec = codec; | |
1045 | ||
1046 | ret = snd_soc_register_codec(codec); | |
1047 | if (ret != 0) { | |
1048 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
1049 | return ret; | |
1050 | } | |
1051 | ||
1052 | ret = snd_soc_register_dai(&wm8955_dai); | |
1053 | if (ret != 0) { | |
1054 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
1055 | snd_soc_unregister_codec(codec); | |
1056 | return ret; | |
1057 | } | |
1058 | ||
1059 | return 0; | |
1060 | ||
1061 | err_enable: | |
1062 | regulator_bulk_disable(ARRAY_SIZE(wm8955->supplies), wm8955->supplies); | |
1063 | err_get: | |
1064 | regulator_bulk_free(ARRAY_SIZE(wm8955->supplies), wm8955->supplies); | |
1065 | err: | |
1066 | kfree(wm8955); | |
1067 | return ret; | |
1068 | } | |
1069 | ||
1070 | static void wm8955_unregister(struct wm8955_priv *wm8955) | |
1071 | { | |
1072 | wm8955_set_bias_level(&wm8955->codec, SND_SOC_BIAS_OFF); | |
1073 | regulator_bulk_free(ARRAY_SIZE(wm8955->supplies), wm8955->supplies); | |
1074 | snd_soc_unregister_dai(&wm8955_dai); | |
1075 | snd_soc_unregister_codec(&wm8955->codec); | |
1076 | kfree(wm8955); | |
1077 | wm8955_codec = NULL; | |
1078 | } | |
1079 | ||
1080 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
1081 | static __devinit int wm8955_i2c_probe(struct i2c_client *i2c, | |
1082 | const struct i2c_device_id *id) | |
1083 | { | |
1084 | struct wm8955_priv *wm8955; | |
1085 | struct snd_soc_codec *codec; | |
1086 | ||
1087 | wm8955 = kzalloc(sizeof(struct wm8955_priv), GFP_KERNEL); | |
1088 | if (wm8955 == NULL) | |
1089 | return -ENOMEM; | |
1090 | ||
1091 | codec = &wm8955->codec; | |
1092 | codec->hw_write = (hw_write_t)i2c_master_send; | |
1093 | ||
1094 | i2c_set_clientdata(i2c, wm8955); | |
1095 | codec->control_data = i2c; | |
1096 | wm8955->pdata = i2c->dev.platform_data; | |
1097 | ||
1098 | codec->dev = &i2c->dev; | |
1099 | ||
1100 | return wm8955_register(wm8955, SND_SOC_I2C); | |
1101 | } | |
1102 | ||
1103 | static __devexit int wm8955_i2c_remove(struct i2c_client *client) | |
1104 | { | |
1105 | struct wm8955_priv *wm8955 = i2c_get_clientdata(client); | |
1106 | wm8955_unregister(wm8955); | |
1107 | return 0; | |
1108 | } | |
1109 | ||
1110 | static const struct i2c_device_id wm8955_i2c_id[] = { | |
1111 | { "wm8955", 0 }, | |
1112 | { } | |
1113 | }; | |
1114 | MODULE_DEVICE_TABLE(i2c, wm8955_i2c_id); | |
1115 | ||
1116 | static struct i2c_driver wm8955_i2c_driver = { | |
1117 | .driver = { | |
1118 | .name = "wm8955", | |
1119 | .owner = THIS_MODULE, | |
1120 | }, | |
1121 | .probe = wm8955_i2c_probe, | |
1122 | .remove = __devexit_p(wm8955_i2c_remove), | |
1123 | .id_table = wm8955_i2c_id, | |
1124 | }; | |
1125 | #endif | |
1126 | ||
1127 | static int __init wm8955_modinit(void) | |
1128 | { | |
1129 | int ret; | |
1130 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
1131 | ret = i2c_add_driver(&wm8955_i2c_driver); | |
1132 | if (ret != 0) { | |
1133 | printk(KERN_ERR "Failed to register WM8955 I2C driver: %d\n", | |
1134 | ret); | |
1135 | } | |
1136 | #endif | |
1137 | return 0; | |
1138 | } | |
1139 | module_init(wm8955_modinit); | |
1140 | ||
1141 | static void __exit wm8955_exit(void) | |
1142 | { | |
1143 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
1144 | i2c_del_driver(&wm8955_i2c_driver); | |
1145 | #endif | |
1146 | } | |
1147 | module_exit(wm8955_exit); | |
1148 | ||
1149 | MODULE_DESCRIPTION("ASoC WM8955 driver"); | |
1150 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
1151 | MODULE_LICENSE("GPL"); |