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ASoC: wm8994: playback => capture
[deliverable/linux.git] / sound / soc / codecs / wm8900.c
1 /*
2 * wm8900.c -- WM8900 ALSA Soc Audio driver
3 *
4 * Copyright 2007, 2008 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 * TODO:
13 * - Tristating.
14 * - TDM.
15 * - Jack detect.
16 * - FLL source configuration, currently only MCLK is supported.
17 */
18
19 #include <linux/module.h>
20 #include <linux/moduleparam.h>
21 #include <linux/kernel.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <linux/pm.h>
25 #include <linux/i2c.h>
26 #include <linux/platform_device.h>
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/soc.h>
31 #include <sound/soc-dapm.h>
32 #include <sound/initval.h>
33 #include <sound/tlv.h>
34
35 #include "wm8900.h"
36
37 /* WM8900 register space */
38 #define WM8900_REG_RESET 0x0
39 #define WM8900_REG_ID 0x0
40 #define WM8900_REG_POWER1 0x1
41 #define WM8900_REG_POWER2 0x2
42 #define WM8900_REG_POWER3 0x3
43 #define WM8900_REG_AUDIO1 0x4
44 #define WM8900_REG_AUDIO2 0x5
45 #define WM8900_REG_CLOCKING1 0x6
46 #define WM8900_REG_CLOCKING2 0x7
47 #define WM8900_REG_AUDIO3 0x8
48 #define WM8900_REG_AUDIO4 0x9
49 #define WM8900_REG_DACCTRL 0xa
50 #define WM8900_REG_LDAC_DV 0xb
51 #define WM8900_REG_RDAC_DV 0xc
52 #define WM8900_REG_SIDETONE 0xd
53 #define WM8900_REG_ADCCTRL 0xe
54 #define WM8900_REG_LADC_DV 0xf
55 #define WM8900_REG_RADC_DV 0x10
56 #define WM8900_REG_GPIO 0x12
57 #define WM8900_REG_INCTL 0x15
58 #define WM8900_REG_LINVOL 0x16
59 #define WM8900_REG_RINVOL 0x17
60 #define WM8900_REG_INBOOSTMIX1 0x18
61 #define WM8900_REG_INBOOSTMIX2 0x19
62 #define WM8900_REG_ADCPATH 0x1a
63 #define WM8900_REG_AUXBOOST 0x1b
64 #define WM8900_REG_ADDCTL 0x1e
65 #define WM8900_REG_FLLCTL1 0x24
66 #define WM8900_REG_FLLCTL2 0x25
67 #define WM8900_REG_FLLCTL3 0x26
68 #define WM8900_REG_FLLCTL4 0x27
69 #define WM8900_REG_FLLCTL5 0x28
70 #define WM8900_REG_FLLCTL6 0x29
71 #define WM8900_REG_LOUTMIXCTL1 0x2c
72 #define WM8900_REG_ROUTMIXCTL1 0x2d
73 #define WM8900_REG_BYPASS1 0x2e
74 #define WM8900_REG_BYPASS2 0x2f
75 #define WM8900_REG_AUXOUT_CTL 0x30
76 #define WM8900_REG_LOUT1CTL 0x33
77 #define WM8900_REG_ROUT1CTL 0x34
78 #define WM8900_REG_LOUT2CTL 0x35
79 #define WM8900_REG_ROUT2CTL 0x36
80 #define WM8900_REG_HPCTL1 0x3a
81 #define WM8900_REG_OUTBIASCTL 0x73
82
83 #define WM8900_MAXREG 0x80
84
85 #define WM8900_REG_ADDCTL_OUT1_DIS 0x80
86 #define WM8900_REG_ADDCTL_OUT2_DIS 0x40
87 #define WM8900_REG_ADDCTL_VMID_DIS 0x20
88 #define WM8900_REG_ADDCTL_BIAS_SRC 0x10
89 #define WM8900_REG_ADDCTL_VMID_SOFTST 0x04
90 #define WM8900_REG_ADDCTL_TEMP_SD 0x02
91
92 #define WM8900_REG_GPIO_TEMP_ENA 0x2
93
94 #define WM8900_REG_POWER1_STARTUP_BIAS_ENA 0x0100
95 #define WM8900_REG_POWER1_BIAS_ENA 0x0008
96 #define WM8900_REG_POWER1_VMID_BUF_ENA 0x0004
97 #define WM8900_REG_POWER1_FLL_ENA 0x0040
98
99 #define WM8900_REG_POWER2_SYSCLK_ENA 0x8000
100 #define WM8900_REG_POWER2_ADCL_ENA 0x0002
101 #define WM8900_REG_POWER2_ADCR_ENA 0x0001
102
103 #define WM8900_REG_POWER3_DACL_ENA 0x0002
104 #define WM8900_REG_POWER3_DACR_ENA 0x0001
105
106 #define WM8900_REG_AUDIO1_AIF_FMT_MASK 0x0018
107 #define WM8900_REG_AUDIO1_LRCLK_INV 0x0080
108 #define WM8900_REG_AUDIO1_BCLK_INV 0x0100
109
110 #define WM8900_REG_CLOCKING1_BCLK_DIR 0x1
111 #define WM8900_REG_CLOCKING1_MCLK_SRC 0x100
112 #define WM8900_REG_CLOCKING1_BCLK_MASK (~0x01e)
113 #define WM8900_REG_CLOCKING1_OPCLK_MASK (~0x7000)
114
115 #define WM8900_REG_CLOCKING2_ADC_CLKDIV 0xe0
116 #define WM8900_REG_CLOCKING2_DAC_CLKDIV 0x1c
117
118 #define WM8900_REG_DACCTRL_MUTE 0x004
119 #define WM8900_REG_DACCTRL_DAC_SB_FILT 0x100
120 #define WM8900_REG_DACCTRL_AIF_LRCLKRATE 0x400
121
122 #define WM8900_REG_AUDIO3_ADCLRC_DIR 0x0800
123
124 #define WM8900_REG_AUDIO4_DACLRC_DIR 0x0800
125
126 #define WM8900_REG_FLLCTL1_OSC_ENA 0x100
127
128 #define WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF 0x100
129
130 #define WM8900_REG_HPCTL1_HP_IPSTAGE_ENA 0x80
131 #define WM8900_REG_HPCTL1_HP_OPSTAGE_ENA 0x40
132 #define WM8900_REG_HPCTL1_HP_CLAMP_IP 0x20
133 #define WM8900_REG_HPCTL1_HP_CLAMP_OP 0x10
134 #define WM8900_REG_HPCTL1_HP_SHORT 0x08
135 #define WM8900_REG_HPCTL1_HP_SHORT2 0x04
136
137 #define WM8900_LRC_MASK 0xfc00
138
139 struct snd_soc_codec_device soc_codec_dev_wm8900;
140
141 struct wm8900_priv {
142 struct snd_soc_codec codec;
143
144 u16 reg_cache[WM8900_MAXREG];
145
146 u32 fll_in; /* FLL input frequency */
147 u32 fll_out; /* FLL output frequency */
148 };
149
150 /*
151 * wm8900 register cache. We can't read the entire register space and we
152 * have slow control buses so we cache the registers.
153 */
154 static const u16 wm8900_reg_defaults[WM8900_MAXREG] = {
155 0x8900, 0x0000,
156 0xc000, 0x0000,
157 0x4050, 0x4000,
158 0x0008, 0x0000,
159 0x0040, 0x0040,
160 0x1004, 0x00c0,
161 0x00c0, 0x0000,
162 0x0100, 0x00c0,
163 0x00c0, 0x0000,
164 0xb001, 0x0000,
165 0x0000, 0x0044,
166 0x004c, 0x004c,
167 0x0044, 0x0044,
168 0x0000, 0x0044,
169 0x0000, 0x0000,
170 0x0002, 0x0000,
171 0x0000, 0x0000,
172 0x0000, 0x0000,
173 0x0008, 0x0000,
174 0x0000, 0x0008,
175 0x0097, 0x0100,
176 0x0000, 0x0000,
177 0x0050, 0x0050,
178 0x0055, 0x0055,
179 0x0055, 0x0000,
180 0x0000, 0x0079,
181 0x0079, 0x0079,
182 0x0079, 0x0000,
183 /* Remaining registers all zero */
184 };
185
186 static int wm8900_volatile_register(unsigned int reg)
187 {
188 switch (reg) {
189 case WM8900_REG_ID:
190 case WM8900_REG_POWER1:
191 return 1;
192 default:
193 return 0;
194 }
195 }
196
197 static void wm8900_reset(struct snd_soc_codec *codec)
198 {
199 snd_soc_write(codec, WM8900_REG_RESET, 0);
200
201 memcpy(codec->reg_cache, wm8900_reg_defaults,
202 sizeof(wm8900_reg_defaults));
203 }
204
205 static int wm8900_hp_event(struct snd_soc_dapm_widget *w,
206 struct snd_kcontrol *kcontrol, int event)
207 {
208 struct snd_soc_codec *codec = w->codec;
209 u16 hpctl1 = snd_soc_read(codec, WM8900_REG_HPCTL1);
210
211 switch (event) {
212 case SND_SOC_DAPM_PRE_PMU:
213 /* Clamp headphone outputs */
214 hpctl1 = WM8900_REG_HPCTL1_HP_CLAMP_IP |
215 WM8900_REG_HPCTL1_HP_CLAMP_OP;
216 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
217 break;
218
219 case SND_SOC_DAPM_POST_PMU:
220 /* Enable the input stage */
221 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_IP;
222 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT |
223 WM8900_REG_HPCTL1_HP_SHORT2 |
224 WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
225 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
226
227 msleep(400);
228
229 /* Enable the output stage */
230 hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_OP;
231 hpctl1 |= WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
232 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
233
234 /* Remove the shorts */
235 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT2;
236 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
237 hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT;
238 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
239 break;
240
241 case SND_SOC_DAPM_PRE_PMD:
242 /* Short the output */
243 hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT;
244 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
245
246 /* Disable the output stage */
247 hpctl1 &= ~WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
248 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
249
250 /* Clamp the outputs and power down input */
251 hpctl1 |= WM8900_REG_HPCTL1_HP_CLAMP_IP |
252 WM8900_REG_HPCTL1_HP_CLAMP_OP;
253 hpctl1 &= ~WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
254 snd_soc_write(codec, WM8900_REG_HPCTL1, hpctl1);
255 break;
256
257 case SND_SOC_DAPM_POST_PMD:
258 /* Disable everything */
259 snd_soc_write(codec, WM8900_REG_HPCTL1, 0);
260 break;
261
262 default:
263 BUG();
264 }
265
266 return 0;
267 }
268
269 static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -5700, 100, 0);
270
271 static const DECLARE_TLV_DB_SCALE(out_mix_tlv, -1500, 300, 0);
272
273 static const DECLARE_TLV_DB_SCALE(in_boost_tlv, -1200, 600, 0);
274
275 static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1200, 100, 0);
276
277 static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
278
279 static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
280
281 static const DECLARE_TLV_DB_SCALE(adc_svol_tlv, -3600, 300, 0);
282
283 static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1);
284
285 static const char *mic_bias_level_txt[] = { "0.9*AVDD", "0.65*AVDD" };
286
287 static const struct soc_enum mic_bias_level =
288 SOC_ENUM_SINGLE(WM8900_REG_INCTL, 8, 2, mic_bias_level_txt);
289
290 static const char *dac_mute_rate_txt[] = { "Fast", "Slow" };
291
292 static const struct soc_enum dac_mute_rate =
293 SOC_ENUM_SINGLE(WM8900_REG_DACCTRL, 7, 2, dac_mute_rate_txt);
294
295 static const char *dac_deemphasis_txt[] = {
296 "Disabled", "32kHz", "44.1kHz", "48kHz"
297 };
298
299 static const struct soc_enum dac_deemphasis =
300 SOC_ENUM_SINGLE(WM8900_REG_DACCTRL, 4, 4, dac_deemphasis_txt);
301
302 static const char *adc_hpf_cut_txt[] = {
303 "Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3"
304 };
305
306 static const struct soc_enum adc_hpf_cut =
307 SOC_ENUM_SINGLE(WM8900_REG_ADCCTRL, 5, 4, adc_hpf_cut_txt);
308
309 static const char *lr_txt[] = {
310 "Left", "Right"
311 };
312
313 static const struct soc_enum aifl_src =
314 SOC_ENUM_SINGLE(WM8900_REG_AUDIO1, 15, 2, lr_txt);
315
316 static const struct soc_enum aifr_src =
317 SOC_ENUM_SINGLE(WM8900_REG_AUDIO1, 14, 2, lr_txt);
318
319 static const struct soc_enum dacl_src =
320 SOC_ENUM_SINGLE(WM8900_REG_AUDIO2, 15, 2, lr_txt);
321
322 static const struct soc_enum dacr_src =
323 SOC_ENUM_SINGLE(WM8900_REG_AUDIO2, 14, 2, lr_txt);
324
325 static const char *sidetone_txt[] = {
326 "Disabled", "Left ADC", "Right ADC"
327 };
328
329 static const struct soc_enum dacl_sidetone =
330 SOC_ENUM_SINGLE(WM8900_REG_SIDETONE, 2, 3, sidetone_txt);
331
332 static const struct soc_enum dacr_sidetone =
333 SOC_ENUM_SINGLE(WM8900_REG_SIDETONE, 0, 3, sidetone_txt);
334
335 static const struct snd_kcontrol_new wm8900_snd_controls[] = {
336 SOC_ENUM("Mic Bias Level", mic_bias_level),
337
338 SOC_SINGLE_TLV("Left Input PGA Volume", WM8900_REG_LINVOL, 0, 31, 0,
339 in_pga_tlv),
340 SOC_SINGLE("Left Input PGA Switch", WM8900_REG_LINVOL, 6, 1, 1),
341 SOC_SINGLE("Left Input PGA ZC Switch", WM8900_REG_LINVOL, 7, 1, 0),
342
343 SOC_SINGLE_TLV("Right Input PGA Volume", WM8900_REG_RINVOL, 0, 31, 0,
344 in_pga_tlv),
345 SOC_SINGLE("Right Input PGA Switch", WM8900_REG_RINVOL, 6, 1, 1),
346 SOC_SINGLE("Right Input PGA ZC Switch", WM8900_REG_RINVOL, 7, 1, 0),
347
348 SOC_SINGLE("DAC Soft Mute Switch", WM8900_REG_DACCTRL, 6, 1, 1),
349 SOC_ENUM("DAC Mute Rate", dac_mute_rate),
350 SOC_SINGLE("DAC Mono Switch", WM8900_REG_DACCTRL, 9, 1, 0),
351 SOC_ENUM("DAC Deemphasis", dac_deemphasis),
352 SOC_SINGLE("DAC Sigma-Delta Modulator Clock Switch", WM8900_REG_DACCTRL,
353 12, 1, 0),
354
355 SOC_SINGLE("ADC HPF Switch", WM8900_REG_ADCCTRL, 8, 1, 0),
356 SOC_ENUM("ADC HPF Cut-Off", adc_hpf_cut),
357 SOC_DOUBLE("ADC Invert Switch", WM8900_REG_ADCCTRL, 1, 0, 1, 0),
358 SOC_SINGLE_TLV("Left ADC Sidetone Volume", WM8900_REG_SIDETONE, 9, 12, 0,
359 adc_svol_tlv),
360 SOC_SINGLE_TLV("Right ADC Sidetone Volume", WM8900_REG_SIDETONE, 5, 12, 0,
361 adc_svol_tlv),
362 SOC_ENUM("Left Digital Audio Source", aifl_src),
363 SOC_ENUM("Right Digital Audio Source", aifr_src),
364
365 SOC_SINGLE_TLV("DAC Input Boost Volume", WM8900_REG_AUDIO2, 10, 4, 0,
366 dac_boost_tlv),
367 SOC_ENUM("Left DAC Source", dacl_src),
368 SOC_ENUM("Right DAC Source", dacr_src),
369 SOC_ENUM("Left DAC Sidetone", dacl_sidetone),
370 SOC_ENUM("Right DAC Sidetone", dacr_sidetone),
371 SOC_DOUBLE("DAC Invert Switch", WM8900_REG_DACCTRL, 1, 0, 1, 0),
372
373 SOC_DOUBLE_R_TLV("Digital Playback Volume",
374 WM8900_REG_LDAC_DV, WM8900_REG_RDAC_DV,
375 1, 96, 0, dac_tlv),
376 SOC_DOUBLE_R_TLV("Digital Capture Volume",
377 WM8900_REG_LADC_DV, WM8900_REG_RADC_DV, 1, 119, 0, adc_tlv),
378
379 SOC_SINGLE_TLV("LINPUT3 Bypass Volume", WM8900_REG_LOUTMIXCTL1, 4, 7, 0,
380 out_mix_tlv),
381 SOC_SINGLE_TLV("RINPUT3 Bypass Volume", WM8900_REG_ROUTMIXCTL1, 4, 7, 0,
382 out_mix_tlv),
383 SOC_SINGLE_TLV("Left AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 4, 7, 0,
384 out_mix_tlv),
385 SOC_SINGLE_TLV("Right AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 0, 7, 0,
386 out_mix_tlv),
387
388 SOC_SINGLE_TLV("LeftIn to RightOut Mixer Volume", WM8900_REG_BYPASS1, 0, 7, 0,
389 out_mix_tlv),
390 SOC_SINGLE_TLV("LeftIn to LeftOut Mixer Volume", WM8900_REG_BYPASS1, 4, 7, 0,
391 out_mix_tlv),
392 SOC_SINGLE_TLV("RightIn to LeftOut Mixer Volume", WM8900_REG_BYPASS2, 0, 7, 0,
393 out_mix_tlv),
394 SOC_SINGLE_TLV("RightIn to RightOut Mixer Volume", WM8900_REG_BYPASS2, 4, 7, 0,
395 out_mix_tlv),
396
397 SOC_SINGLE_TLV("IN2L Boost Volume", WM8900_REG_INBOOSTMIX1, 0, 3, 0,
398 in_boost_tlv),
399 SOC_SINGLE_TLV("IN3L Boost Volume", WM8900_REG_INBOOSTMIX1, 4, 3, 0,
400 in_boost_tlv),
401 SOC_SINGLE_TLV("IN2R Boost Volume", WM8900_REG_INBOOSTMIX2, 0, 3, 0,
402 in_boost_tlv),
403 SOC_SINGLE_TLV("IN3R Boost Volume", WM8900_REG_INBOOSTMIX2, 4, 3, 0,
404 in_boost_tlv),
405 SOC_SINGLE_TLV("Left AUX Boost Volume", WM8900_REG_AUXBOOST, 4, 3, 0,
406 in_boost_tlv),
407 SOC_SINGLE_TLV("Right AUX Boost Volume", WM8900_REG_AUXBOOST, 0, 3, 0,
408 in_boost_tlv),
409
410 SOC_DOUBLE_R_TLV("LINEOUT1 Volume", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
411 0, 63, 0, out_pga_tlv),
412 SOC_DOUBLE_R("LINEOUT1 Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
413 6, 1, 1),
414 SOC_DOUBLE_R("LINEOUT1 ZC Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
415 7, 1, 0),
416
417 SOC_DOUBLE_R_TLV("LINEOUT2 Volume",
418 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL,
419 0, 63, 0, out_pga_tlv),
420 SOC_DOUBLE_R("LINEOUT2 Switch",
421 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 6, 1, 1),
422 SOC_DOUBLE_R("LINEOUT2 ZC Switch",
423 WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 7, 1, 0),
424 SOC_SINGLE("LINEOUT2 LP -12dB", WM8900_REG_LOUTMIXCTL1,
425 0, 1, 1),
426
427 };
428
429 static const struct snd_kcontrol_new wm8900_dapm_loutput2_control =
430 SOC_DAPM_SINGLE("LINEOUT2L Switch", WM8900_REG_POWER3, 6, 1, 0);
431
432 static const struct snd_kcontrol_new wm8900_dapm_routput2_control =
433 SOC_DAPM_SINGLE("LINEOUT2R Switch", WM8900_REG_POWER3, 5, 1, 0);
434
435 static const struct snd_kcontrol_new wm8900_loutmix_controls[] = {
436 SOC_DAPM_SINGLE("LINPUT3 Bypass Switch", WM8900_REG_LOUTMIXCTL1, 7, 1, 0),
437 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 7, 1, 0),
438 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 7, 1, 0),
439 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 3, 1, 0),
440 SOC_DAPM_SINGLE("DACL Switch", WM8900_REG_LOUTMIXCTL1, 8, 1, 0),
441 };
442
443 static const struct snd_kcontrol_new wm8900_routmix_controls[] = {
444 SOC_DAPM_SINGLE("RINPUT3 Bypass Switch", WM8900_REG_ROUTMIXCTL1, 7, 1, 0),
445 SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 3, 1, 0),
446 SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 3, 1, 0),
447 SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 7, 1, 0),
448 SOC_DAPM_SINGLE("DACR Switch", WM8900_REG_ROUTMIXCTL1, 8, 1, 0),
449 };
450
451 static const struct snd_kcontrol_new wm8900_linmix_controls[] = {
452 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INBOOSTMIX1, 2, 1, 1),
453 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INBOOSTMIX1, 6, 1, 1),
454 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 6, 1, 1),
455 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 6, 1, 0),
456 };
457
458 static const struct snd_kcontrol_new wm8900_rinmix_controls[] = {
459 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INBOOSTMIX2, 2, 1, 1),
460 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INBOOSTMIX2, 6, 1, 1),
461 SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 2, 1, 1),
462 SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 2, 1, 0),
463 };
464
465 static const struct snd_kcontrol_new wm8900_linpga_controls[] = {
466 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8900_REG_INCTL, 6, 1, 0),
467 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INCTL, 5, 1, 0),
468 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INCTL, 4, 1, 0),
469 };
470
471 static const struct snd_kcontrol_new wm8900_rinpga_controls[] = {
472 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8900_REG_INCTL, 2, 1, 0),
473 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INCTL, 1, 1, 0),
474 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INCTL, 0, 1, 0),
475 };
476
477 static const char *wm9700_lp_mux[] = { "Disabled", "Enabled" };
478
479 static const struct soc_enum wm8900_lineout2_lp_mux =
480 SOC_ENUM_SINGLE(WM8900_REG_LOUTMIXCTL1, 1, 2, wm9700_lp_mux);
481
482 static const struct snd_kcontrol_new wm8900_lineout2_lp =
483 SOC_DAPM_ENUM("Route", wm8900_lineout2_lp_mux);
484
485 static const struct snd_soc_dapm_widget wm8900_dapm_widgets[] = {
486
487 /* Externally visible pins */
488 SND_SOC_DAPM_OUTPUT("LINEOUT1L"),
489 SND_SOC_DAPM_OUTPUT("LINEOUT1R"),
490 SND_SOC_DAPM_OUTPUT("LINEOUT2L"),
491 SND_SOC_DAPM_OUTPUT("LINEOUT2R"),
492 SND_SOC_DAPM_OUTPUT("HP_L"),
493 SND_SOC_DAPM_OUTPUT("HP_R"),
494
495 SND_SOC_DAPM_INPUT("RINPUT1"),
496 SND_SOC_DAPM_INPUT("LINPUT1"),
497 SND_SOC_DAPM_INPUT("RINPUT2"),
498 SND_SOC_DAPM_INPUT("LINPUT2"),
499 SND_SOC_DAPM_INPUT("RINPUT3"),
500 SND_SOC_DAPM_INPUT("LINPUT3"),
501 SND_SOC_DAPM_INPUT("AUX"),
502
503 SND_SOC_DAPM_VMID("VMID"),
504
505 /* Input */
506 SND_SOC_DAPM_MIXER("Left Input PGA", WM8900_REG_POWER2, 3, 0,
507 wm8900_linpga_controls,
508 ARRAY_SIZE(wm8900_linpga_controls)),
509 SND_SOC_DAPM_MIXER("Right Input PGA", WM8900_REG_POWER2, 2, 0,
510 wm8900_rinpga_controls,
511 ARRAY_SIZE(wm8900_rinpga_controls)),
512
513 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8900_REG_POWER2, 5, 0,
514 wm8900_linmix_controls,
515 ARRAY_SIZE(wm8900_linmix_controls)),
516 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8900_REG_POWER2, 4, 0,
517 wm8900_rinmix_controls,
518 ARRAY_SIZE(wm8900_rinmix_controls)),
519
520 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8900_REG_POWER1, 4, 0),
521
522 SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8900_REG_POWER2, 1, 0),
523 SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8900_REG_POWER2, 0, 0),
524
525 /* Output */
526 SND_SOC_DAPM_DAC("DACL", "Left HiFi Playback", WM8900_REG_POWER3, 1, 0),
527 SND_SOC_DAPM_DAC("DACR", "Right HiFi Playback", WM8900_REG_POWER3, 0, 0),
528
529 SND_SOC_DAPM_PGA_E("Headphone Amplifier", WM8900_REG_POWER3, 7, 0, NULL, 0,
530 wm8900_hp_event,
531 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
532 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
533
534 SND_SOC_DAPM_PGA("LINEOUT1L PGA", WM8900_REG_POWER2, 8, 0, NULL, 0),
535 SND_SOC_DAPM_PGA("LINEOUT1R PGA", WM8900_REG_POWER2, 7, 0, NULL, 0),
536
537 SND_SOC_DAPM_MUX("LINEOUT2 LP", SND_SOC_NOPM, 0, 0, &wm8900_lineout2_lp),
538 SND_SOC_DAPM_PGA("LINEOUT2L PGA", WM8900_REG_POWER3, 6, 0, NULL, 0),
539 SND_SOC_DAPM_PGA("LINEOUT2R PGA", WM8900_REG_POWER3, 5, 0, NULL, 0),
540
541 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8900_REG_POWER3, 3, 0,
542 wm8900_loutmix_controls,
543 ARRAY_SIZE(wm8900_loutmix_controls)),
544 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8900_REG_POWER3, 2, 0,
545 wm8900_routmix_controls,
546 ARRAY_SIZE(wm8900_routmix_controls)),
547 };
548
549 /* Target, Path, Source */
550 static const struct snd_soc_dapm_route audio_map[] = {
551 /* Inputs */
552 {"Left Input PGA", "LINPUT1 Switch", "LINPUT1"},
553 {"Left Input PGA", "LINPUT2 Switch", "LINPUT2"},
554 {"Left Input PGA", "LINPUT3 Switch", "LINPUT3"},
555
556 {"Right Input PGA", "RINPUT1 Switch", "RINPUT1"},
557 {"Right Input PGA", "RINPUT2 Switch", "RINPUT2"},
558 {"Right Input PGA", "RINPUT3 Switch", "RINPUT3"},
559
560 {"Left Input Mixer", "LINPUT2 Switch", "LINPUT2"},
561 {"Left Input Mixer", "LINPUT3 Switch", "LINPUT3"},
562 {"Left Input Mixer", "AUX Switch", "AUX"},
563 {"Left Input Mixer", "Input PGA Switch", "Left Input PGA"},
564
565 {"Right Input Mixer", "RINPUT2 Switch", "RINPUT2"},
566 {"Right Input Mixer", "RINPUT3 Switch", "RINPUT3"},
567 {"Right Input Mixer", "AUX Switch", "AUX"},
568 {"Right Input Mixer", "Input PGA Switch", "Right Input PGA"},
569
570 {"ADCL", NULL, "Left Input Mixer"},
571 {"ADCR", NULL, "Right Input Mixer"},
572
573 /* Outputs */
574 {"LINEOUT1L", NULL, "LINEOUT1L PGA"},
575 {"LINEOUT1L PGA", NULL, "Left Output Mixer"},
576 {"LINEOUT1R", NULL, "LINEOUT1R PGA"},
577 {"LINEOUT1R PGA", NULL, "Right Output Mixer"},
578
579 {"LINEOUT2L PGA", NULL, "Left Output Mixer"},
580 {"LINEOUT2 LP", "Disabled", "LINEOUT2L PGA"},
581 {"LINEOUT2 LP", "Enabled", "Left Output Mixer"},
582 {"LINEOUT2L", NULL, "LINEOUT2 LP"},
583
584 {"LINEOUT2R PGA", NULL, "Right Output Mixer"},
585 {"LINEOUT2 LP", "Disabled", "LINEOUT2R PGA"},
586 {"LINEOUT2 LP", "Enabled", "Right Output Mixer"},
587 {"LINEOUT2R", NULL, "LINEOUT2 LP"},
588
589 {"Left Output Mixer", "LINPUT3 Bypass Switch", "LINPUT3"},
590 {"Left Output Mixer", "AUX Bypass Switch", "AUX"},
591 {"Left Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
592 {"Left Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
593 {"Left Output Mixer", "DACL Switch", "DACL"},
594
595 {"Right Output Mixer", "RINPUT3 Bypass Switch", "RINPUT3"},
596 {"Right Output Mixer", "AUX Bypass Switch", "AUX"},
597 {"Right Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
598 {"Right Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
599 {"Right Output Mixer", "DACR Switch", "DACR"},
600
601 /* Note that the headphone output stage needs to be connected
602 * externally to LINEOUT2 via DC blocking capacitors. Other
603 * configurations are not supported.
604 *
605 * Note also that left and right headphone paths are treated as a
606 * mono path.
607 */
608 {"Headphone Amplifier", NULL, "LINEOUT2 LP"},
609 {"Headphone Amplifier", NULL, "LINEOUT2 LP"},
610 {"HP_L", NULL, "Headphone Amplifier"},
611 {"HP_R", NULL, "Headphone Amplifier"},
612 };
613
614 static int wm8900_add_widgets(struct snd_soc_codec *codec)
615 {
616 snd_soc_dapm_new_controls(codec, wm8900_dapm_widgets,
617 ARRAY_SIZE(wm8900_dapm_widgets));
618
619 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
620
621 return 0;
622 }
623
624 static int wm8900_hw_params(struct snd_pcm_substream *substream,
625 struct snd_pcm_hw_params *params,
626 struct snd_soc_dai *dai)
627 {
628 struct snd_soc_pcm_runtime *rtd = substream->private_data;
629 struct snd_soc_device *socdev = rtd->socdev;
630 struct snd_soc_codec *codec = socdev->card->codec;
631 u16 reg;
632
633 reg = snd_soc_read(codec, WM8900_REG_AUDIO1) & ~0x60;
634
635 switch (params_format(params)) {
636 case SNDRV_PCM_FORMAT_S16_LE:
637 break;
638 case SNDRV_PCM_FORMAT_S20_3LE:
639 reg |= 0x20;
640 break;
641 case SNDRV_PCM_FORMAT_S24_LE:
642 reg |= 0x40;
643 break;
644 case SNDRV_PCM_FORMAT_S32_LE:
645 reg |= 0x60;
646 break;
647 default:
648 return -EINVAL;
649 }
650
651 snd_soc_write(codec, WM8900_REG_AUDIO1, reg);
652
653 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
654 reg = snd_soc_read(codec, WM8900_REG_DACCTRL);
655
656 if (params_rate(params) <= 24000)
657 reg |= WM8900_REG_DACCTRL_DAC_SB_FILT;
658 else
659 reg &= ~WM8900_REG_DACCTRL_DAC_SB_FILT;
660
661 snd_soc_write(codec, WM8900_REG_DACCTRL, reg);
662 }
663
664 return 0;
665 }
666
667 /* FLL divisors */
668 struct _fll_div {
669 u16 fll_ratio;
670 u16 fllclk_div;
671 u16 fll_slow_lock_ref;
672 u16 n;
673 u16 k;
674 };
675
676 /* The size in bits of the FLL divide multiplied by 10
677 * to allow rounding later */
678 #define FIXED_FLL_SIZE ((1 << 16) * 10)
679
680 static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
681 unsigned int Fout)
682 {
683 u64 Kpart;
684 unsigned int K, Ndiv, Nmod, target;
685 unsigned int div;
686
687 BUG_ON(!Fout);
688
689 /* The FLL must run at 90-100MHz which is then scaled down to
690 * the output value by FLLCLK_DIV. */
691 target = Fout;
692 div = 1;
693 while (target < 90000000) {
694 div *= 2;
695 target *= 2;
696 }
697
698 if (target > 100000000)
699 printk(KERN_WARNING "wm8900: FLL rate %u out of range, Fref=%u"
700 " Fout=%u\n", target, Fref, Fout);
701 if (div > 32) {
702 printk(KERN_ERR "wm8900: Invalid FLL division rate %u, "
703 "Fref=%u, Fout=%u, target=%u\n",
704 div, Fref, Fout, target);
705 return -EINVAL;
706 }
707
708 fll_div->fllclk_div = div >> 2;
709
710 if (Fref < 48000)
711 fll_div->fll_slow_lock_ref = 1;
712 else
713 fll_div->fll_slow_lock_ref = 0;
714
715 Ndiv = target / Fref;
716
717 if (Fref < 1000000)
718 fll_div->fll_ratio = 8;
719 else
720 fll_div->fll_ratio = 1;
721
722 fll_div->n = Ndiv / fll_div->fll_ratio;
723 Nmod = (target / fll_div->fll_ratio) % Fref;
724
725 /* Calculate fractional part - scale up so we can round. */
726 Kpart = FIXED_FLL_SIZE * (long long)Nmod;
727
728 do_div(Kpart, Fref);
729
730 K = Kpart & 0xFFFFFFFF;
731
732 if ((K % 10) >= 5)
733 K += 5;
734
735 /* Move down to proper range now rounding is done */
736 fll_div->k = K / 10;
737
738 BUG_ON(target != Fout * (fll_div->fllclk_div << 2));
739 BUG_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n);
740
741 return 0;
742 }
743
744 static int wm8900_set_fll(struct snd_soc_codec *codec,
745 int fll_id, unsigned int freq_in, unsigned int freq_out)
746 {
747 struct wm8900_priv *wm8900 = codec->private_data;
748 struct _fll_div fll_div;
749 unsigned int reg;
750
751 if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out)
752 return 0;
753
754 /* The digital side should be disabled during any change. */
755 reg = snd_soc_read(codec, WM8900_REG_POWER1);
756 snd_soc_write(codec, WM8900_REG_POWER1,
757 reg & (~WM8900_REG_POWER1_FLL_ENA));
758
759 /* Disable the FLL? */
760 if (!freq_in || !freq_out) {
761 reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
762 snd_soc_write(codec, WM8900_REG_CLOCKING1,
763 reg & (~WM8900_REG_CLOCKING1_MCLK_SRC));
764
765 reg = snd_soc_read(codec, WM8900_REG_FLLCTL1);
766 snd_soc_write(codec, WM8900_REG_FLLCTL1,
767 reg & (~WM8900_REG_FLLCTL1_OSC_ENA));
768
769 wm8900->fll_in = freq_in;
770 wm8900->fll_out = freq_out;
771
772 return 0;
773 }
774
775 if (fll_factors(&fll_div, freq_in, freq_out) != 0)
776 goto reenable;
777
778 wm8900->fll_in = freq_in;
779 wm8900->fll_out = freq_out;
780
781 /* The osclilator *MUST* be enabled before we enable the
782 * digital circuit. */
783 snd_soc_write(codec, WM8900_REG_FLLCTL1,
784 fll_div.fll_ratio | WM8900_REG_FLLCTL1_OSC_ENA);
785
786 snd_soc_write(codec, WM8900_REG_FLLCTL4, fll_div.n >> 5);
787 snd_soc_write(codec, WM8900_REG_FLLCTL5,
788 (fll_div.fllclk_div << 6) | (fll_div.n & 0x1f));
789
790 if (fll_div.k) {
791 snd_soc_write(codec, WM8900_REG_FLLCTL2,
792 (fll_div.k >> 8) | 0x100);
793 snd_soc_write(codec, WM8900_REG_FLLCTL3, fll_div.k & 0xff);
794 } else
795 snd_soc_write(codec, WM8900_REG_FLLCTL2, 0);
796
797 if (fll_div.fll_slow_lock_ref)
798 snd_soc_write(codec, WM8900_REG_FLLCTL6,
799 WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF);
800 else
801 snd_soc_write(codec, WM8900_REG_FLLCTL6, 0);
802
803 reg = snd_soc_read(codec, WM8900_REG_POWER1);
804 snd_soc_write(codec, WM8900_REG_POWER1,
805 reg | WM8900_REG_POWER1_FLL_ENA);
806
807 reenable:
808 reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
809 snd_soc_write(codec, WM8900_REG_CLOCKING1,
810 reg | WM8900_REG_CLOCKING1_MCLK_SRC);
811
812 return 0;
813 }
814
815 static int wm8900_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
816 int source, unsigned int freq_in, unsigned int freq_out)
817 {
818 return wm8900_set_fll(codec_dai->codec, pll_id, freq_in, freq_out);
819 }
820
821 static int wm8900_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
822 int div_id, int div)
823 {
824 struct snd_soc_codec *codec = codec_dai->codec;
825 unsigned int reg;
826
827 switch (div_id) {
828 case WM8900_BCLK_DIV:
829 reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
830 snd_soc_write(codec, WM8900_REG_CLOCKING1,
831 div | (reg & WM8900_REG_CLOCKING1_BCLK_MASK));
832 break;
833 case WM8900_OPCLK_DIV:
834 reg = snd_soc_read(codec, WM8900_REG_CLOCKING1);
835 snd_soc_write(codec, WM8900_REG_CLOCKING1,
836 div | (reg & WM8900_REG_CLOCKING1_OPCLK_MASK));
837 break;
838 case WM8900_DAC_LRCLK:
839 reg = snd_soc_read(codec, WM8900_REG_AUDIO4);
840 snd_soc_write(codec, WM8900_REG_AUDIO4,
841 div | (reg & WM8900_LRC_MASK));
842 break;
843 case WM8900_ADC_LRCLK:
844 reg = snd_soc_read(codec, WM8900_REG_AUDIO3);
845 snd_soc_write(codec, WM8900_REG_AUDIO3,
846 div | (reg & WM8900_LRC_MASK));
847 break;
848 case WM8900_DAC_CLKDIV:
849 reg = snd_soc_read(codec, WM8900_REG_CLOCKING2);
850 snd_soc_write(codec, WM8900_REG_CLOCKING2,
851 div | (reg & WM8900_REG_CLOCKING2_DAC_CLKDIV));
852 break;
853 case WM8900_ADC_CLKDIV:
854 reg = snd_soc_read(codec, WM8900_REG_CLOCKING2);
855 snd_soc_write(codec, WM8900_REG_CLOCKING2,
856 div | (reg & WM8900_REG_CLOCKING2_ADC_CLKDIV));
857 break;
858 case WM8900_LRCLK_MODE:
859 reg = snd_soc_read(codec, WM8900_REG_DACCTRL);
860 snd_soc_write(codec, WM8900_REG_DACCTRL,
861 div | (reg & WM8900_REG_DACCTRL_AIF_LRCLKRATE));
862 break;
863 default:
864 return -EINVAL;
865 }
866
867 return 0;
868 }
869
870
871 static int wm8900_set_dai_fmt(struct snd_soc_dai *codec_dai,
872 unsigned int fmt)
873 {
874 struct snd_soc_codec *codec = codec_dai->codec;
875 unsigned int clocking1, aif1, aif3, aif4;
876
877 clocking1 = snd_soc_read(codec, WM8900_REG_CLOCKING1);
878 aif1 = snd_soc_read(codec, WM8900_REG_AUDIO1);
879 aif3 = snd_soc_read(codec, WM8900_REG_AUDIO3);
880 aif4 = snd_soc_read(codec, WM8900_REG_AUDIO4);
881
882 /* set master/slave audio interface */
883 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
884 case SND_SOC_DAIFMT_CBS_CFS:
885 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
886 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
887 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
888 break;
889 case SND_SOC_DAIFMT_CBS_CFM:
890 clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
891 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
892 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
893 break;
894 case SND_SOC_DAIFMT_CBM_CFM:
895 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
896 aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
897 aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
898 break;
899 case SND_SOC_DAIFMT_CBM_CFS:
900 clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
901 aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
902 aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
903 break;
904 default:
905 return -EINVAL;
906 }
907
908 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
909 case SND_SOC_DAIFMT_DSP_A:
910 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
911 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
912 break;
913 case SND_SOC_DAIFMT_DSP_B:
914 aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
915 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
916 break;
917 case SND_SOC_DAIFMT_I2S:
918 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
919 aif1 |= 0x10;
920 break;
921 case SND_SOC_DAIFMT_RIGHT_J:
922 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
923 break;
924 case SND_SOC_DAIFMT_LEFT_J:
925 aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
926 aif1 |= 0x8;
927 break;
928 default:
929 return -EINVAL;
930 }
931
932 /* Clock inversion */
933 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
934 case SND_SOC_DAIFMT_DSP_A:
935 case SND_SOC_DAIFMT_DSP_B:
936 /* frame inversion not valid for DSP modes */
937 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
938 case SND_SOC_DAIFMT_NB_NF:
939 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
940 break;
941 case SND_SOC_DAIFMT_IB_NF:
942 aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
943 break;
944 default:
945 return -EINVAL;
946 }
947 break;
948 case SND_SOC_DAIFMT_I2S:
949 case SND_SOC_DAIFMT_RIGHT_J:
950 case SND_SOC_DAIFMT_LEFT_J:
951 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
952 case SND_SOC_DAIFMT_NB_NF:
953 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
954 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
955 break;
956 case SND_SOC_DAIFMT_IB_IF:
957 aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
958 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
959 break;
960 case SND_SOC_DAIFMT_IB_NF:
961 aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
962 aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
963 break;
964 case SND_SOC_DAIFMT_NB_IF:
965 aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
966 aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
967 break;
968 default:
969 return -EINVAL;
970 }
971 break;
972 default:
973 return -EINVAL;
974 }
975
976 snd_soc_write(codec, WM8900_REG_CLOCKING1, clocking1);
977 snd_soc_write(codec, WM8900_REG_AUDIO1, aif1);
978 snd_soc_write(codec, WM8900_REG_AUDIO3, aif3);
979 snd_soc_write(codec, WM8900_REG_AUDIO4, aif4);
980
981 return 0;
982 }
983
984 static int wm8900_digital_mute(struct snd_soc_dai *codec_dai, int mute)
985 {
986 struct snd_soc_codec *codec = codec_dai->codec;
987 u16 reg;
988
989 reg = snd_soc_read(codec, WM8900_REG_DACCTRL);
990
991 if (mute)
992 reg |= WM8900_REG_DACCTRL_MUTE;
993 else
994 reg &= ~WM8900_REG_DACCTRL_MUTE;
995
996 snd_soc_write(codec, WM8900_REG_DACCTRL, reg);
997
998 return 0;
999 }
1000
1001 #define WM8900_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
1002 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
1003 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
1004
1005 #define WM8900_PCM_FORMATS \
1006 (SNDRV_PCM_FORMAT_S16_LE | SNDRV_PCM_FORMAT_S20_3LE | \
1007 SNDRV_PCM_FORMAT_S24_LE)
1008
1009 static struct snd_soc_dai_ops wm8900_dai_ops = {
1010 .hw_params = wm8900_hw_params,
1011 .set_clkdiv = wm8900_set_dai_clkdiv,
1012 .set_pll = wm8900_set_dai_pll,
1013 .set_fmt = wm8900_set_dai_fmt,
1014 .digital_mute = wm8900_digital_mute,
1015 };
1016
1017 struct snd_soc_dai wm8900_dai = {
1018 .name = "WM8900 HiFi",
1019 .playback = {
1020 .stream_name = "HiFi Playback",
1021 .channels_min = 1,
1022 .channels_max = 2,
1023 .rates = WM8900_RATES,
1024 .formats = WM8900_PCM_FORMATS,
1025 },
1026 .capture = {
1027 .stream_name = "HiFi Capture",
1028 .channels_min = 1,
1029 .channels_max = 2,
1030 .rates = WM8900_RATES,
1031 .formats = WM8900_PCM_FORMATS,
1032 },
1033 .ops = &wm8900_dai_ops,
1034 };
1035 EXPORT_SYMBOL_GPL(wm8900_dai);
1036
1037 static int wm8900_set_bias_level(struct snd_soc_codec *codec,
1038 enum snd_soc_bias_level level)
1039 {
1040 u16 reg;
1041
1042 switch (level) {
1043 case SND_SOC_BIAS_ON:
1044 /* Enable thermal shutdown */
1045 reg = snd_soc_read(codec, WM8900_REG_GPIO);
1046 snd_soc_write(codec, WM8900_REG_GPIO,
1047 reg | WM8900_REG_GPIO_TEMP_ENA);
1048 reg = snd_soc_read(codec, WM8900_REG_ADDCTL);
1049 snd_soc_write(codec, WM8900_REG_ADDCTL,
1050 reg | WM8900_REG_ADDCTL_TEMP_SD);
1051 break;
1052
1053 case SND_SOC_BIAS_PREPARE:
1054 break;
1055
1056 case SND_SOC_BIAS_STANDBY:
1057 /* Charge capacitors if initial power up */
1058 if (codec->bias_level == SND_SOC_BIAS_OFF) {
1059 /* STARTUP_BIAS_ENA on */
1060 snd_soc_write(codec, WM8900_REG_POWER1,
1061 WM8900_REG_POWER1_STARTUP_BIAS_ENA);
1062
1063 /* Startup bias mode */
1064 snd_soc_write(codec, WM8900_REG_ADDCTL,
1065 WM8900_REG_ADDCTL_BIAS_SRC |
1066 WM8900_REG_ADDCTL_VMID_SOFTST);
1067
1068 /* VMID 2x50k */
1069 snd_soc_write(codec, WM8900_REG_POWER1,
1070 WM8900_REG_POWER1_STARTUP_BIAS_ENA | 0x1);
1071
1072 /* Allow capacitors to charge */
1073 schedule_timeout_interruptible(msecs_to_jiffies(400));
1074
1075 /* Enable bias */
1076 snd_soc_write(codec, WM8900_REG_POWER1,
1077 WM8900_REG_POWER1_STARTUP_BIAS_ENA |
1078 WM8900_REG_POWER1_BIAS_ENA | 0x1);
1079
1080 snd_soc_write(codec, WM8900_REG_ADDCTL, 0);
1081
1082 snd_soc_write(codec, WM8900_REG_POWER1,
1083 WM8900_REG_POWER1_BIAS_ENA | 0x1);
1084 }
1085
1086 reg = snd_soc_read(codec, WM8900_REG_POWER1);
1087 snd_soc_write(codec, WM8900_REG_POWER1,
1088 (reg & WM8900_REG_POWER1_FLL_ENA) |
1089 WM8900_REG_POWER1_BIAS_ENA | 0x1);
1090 snd_soc_write(codec, WM8900_REG_POWER2,
1091 WM8900_REG_POWER2_SYSCLK_ENA);
1092 snd_soc_write(codec, WM8900_REG_POWER3, 0);
1093 break;
1094
1095 case SND_SOC_BIAS_OFF:
1096 /* Startup bias enable */
1097 reg = snd_soc_read(codec, WM8900_REG_POWER1);
1098 snd_soc_write(codec, WM8900_REG_POWER1,
1099 reg & WM8900_REG_POWER1_STARTUP_BIAS_ENA);
1100 snd_soc_write(codec, WM8900_REG_ADDCTL,
1101 WM8900_REG_ADDCTL_BIAS_SRC |
1102 WM8900_REG_ADDCTL_VMID_SOFTST);
1103
1104 /* Discharge caps */
1105 snd_soc_write(codec, WM8900_REG_POWER1,
1106 WM8900_REG_POWER1_STARTUP_BIAS_ENA);
1107 schedule_timeout_interruptible(msecs_to_jiffies(500));
1108
1109 /* Remove clamp */
1110 snd_soc_write(codec, WM8900_REG_HPCTL1, 0);
1111
1112 /* Power down */
1113 snd_soc_write(codec, WM8900_REG_ADDCTL, 0);
1114 snd_soc_write(codec, WM8900_REG_POWER1, 0);
1115 snd_soc_write(codec, WM8900_REG_POWER2, 0);
1116 snd_soc_write(codec, WM8900_REG_POWER3, 0);
1117
1118 /* Need to let things settle before stopping the clock
1119 * to ensure that restart works, see "Stopping the
1120 * master clock" in the datasheet. */
1121 schedule_timeout_interruptible(msecs_to_jiffies(1));
1122 snd_soc_write(codec, WM8900_REG_POWER2,
1123 WM8900_REG_POWER2_SYSCLK_ENA);
1124 break;
1125 }
1126 codec->bias_level = level;
1127 return 0;
1128 }
1129
1130 static int wm8900_suspend(struct platform_device *pdev, pm_message_t state)
1131 {
1132 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1133 struct snd_soc_codec *codec = socdev->card->codec;
1134 struct wm8900_priv *wm8900 = codec->private_data;
1135 int fll_out = wm8900->fll_out;
1136 int fll_in = wm8900->fll_in;
1137 int ret;
1138
1139 /* Stop the FLL in an orderly fashion */
1140 ret = wm8900_set_fll(codec, 0, 0, 0);
1141 if (ret != 0) {
1142 dev_err(&pdev->dev, "Failed to stop FLL\n");
1143 return ret;
1144 }
1145
1146 wm8900->fll_out = fll_out;
1147 wm8900->fll_in = fll_in;
1148
1149 wm8900_set_bias_level(codec, SND_SOC_BIAS_OFF);
1150
1151 return 0;
1152 }
1153
1154 static int wm8900_resume(struct platform_device *pdev)
1155 {
1156 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1157 struct snd_soc_codec *codec = socdev->card->codec;
1158 struct wm8900_priv *wm8900 = codec->private_data;
1159 u16 *cache;
1160 int i, ret;
1161
1162 cache = kmemdup(codec->reg_cache, sizeof(wm8900_reg_defaults),
1163 GFP_KERNEL);
1164
1165 wm8900_reset(codec);
1166 wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1167
1168 /* Restart the FLL? */
1169 if (wm8900->fll_out) {
1170 int fll_out = wm8900->fll_out;
1171 int fll_in = wm8900->fll_in;
1172
1173 wm8900->fll_in = 0;
1174 wm8900->fll_out = 0;
1175
1176 ret = wm8900_set_fll(codec, 0, fll_in, fll_out);
1177 if (ret != 0) {
1178 dev_err(&pdev->dev, "Failed to restart FLL\n");
1179 return ret;
1180 }
1181 }
1182
1183 if (cache) {
1184 for (i = 0; i < WM8900_MAXREG; i++)
1185 snd_soc_write(codec, i, cache[i]);
1186 kfree(cache);
1187 } else
1188 dev_err(&pdev->dev, "Unable to allocate register cache\n");
1189
1190 return 0;
1191 }
1192
1193 static struct snd_soc_codec *wm8900_codec;
1194
1195 static __devinit int wm8900_i2c_probe(struct i2c_client *i2c,
1196 const struct i2c_device_id *id)
1197 {
1198 struct wm8900_priv *wm8900;
1199 struct snd_soc_codec *codec;
1200 unsigned int reg;
1201 int ret;
1202
1203 wm8900 = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
1204 if (wm8900 == NULL)
1205 return -ENOMEM;
1206
1207 codec = &wm8900->codec;
1208 codec->private_data = wm8900;
1209 codec->reg_cache = &wm8900->reg_cache[0];
1210 codec->reg_cache_size = WM8900_MAXREG;
1211
1212 mutex_init(&codec->mutex);
1213 INIT_LIST_HEAD(&codec->dapm_widgets);
1214 INIT_LIST_HEAD(&codec->dapm_paths);
1215
1216 codec->name = "WM8900";
1217 codec->owner = THIS_MODULE;
1218 codec->dai = &wm8900_dai;
1219 codec->num_dai = 1;
1220 codec->control_data = i2c;
1221 codec->set_bias_level = wm8900_set_bias_level;
1222 codec->volatile_register = wm8900_volatile_register;
1223 codec->dev = &i2c->dev;
1224
1225 ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
1226 if (ret != 0) {
1227 dev_err(&i2c->dev, "Failed to set cache I/O: %d\n", ret);
1228 goto err;
1229 }
1230
1231 reg = snd_soc_read(codec, WM8900_REG_ID);
1232 if (reg != 0x8900) {
1233 dev_err(&i2c->dev, "Device is not a WM8900 - ID %x\n", reg);
1234 ret = -ENODEV;
1235 goto err;
1236 }
1237
1238 /* Read back from the chip */
1239 reg = snd_soc_read(codec, WM8900_REG_POWER1);
1240 reg = (reg >> 12) & 0xf;
1241 dev_info(&i2c->dev, "WM8900 revision %d\n", reg);
1242
1243 wm8900_reset(codec);
1244
1245 /* Turn the chip on */
1246 wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1247
1248 /* Latch the volume update bits */
1249 snd_soc_write(codec, WM8900_REG_LINVOL,
1250 snd_soc_read(codec, WM8900_REG_LINVOL) | 0x100);
1251 snd_soc_write(codec, WM8900_REG_RINVOL,
1252 snd_soc_read(codec, WM8900_REG_RINVOL) | 0x100);
1253 snd_soc_write(codec, WM8900_REG_LOUT1CTL,
1254 snd_soc_read(codec, WM8900_REG_LOUT1CTL) | 0x100);
1255 snd_soc_write(codec, WM8900_REG_ROUT1CTL,
1256 snd_soc_read(codec, WM8900_REG_ROUT1CTL) | 0x100);
1257 snd_soc_write(codec, WM8900_REG_LOUT2CTL,
1258 snd_soc_read(codec, WM8900_REG_LOUT2CTL) | 0x100);
1259 snd_soc_write(codec, WM8900_REG_ROUT2CTL,
1260 snd_soc_read(codec, WM8900_REG_ROUT2CTL) | 0x100);
1261 snd_soc_write(codec, WM8900_REG_LDAC_DV,
1262 snd_soc_read(codec, WM8900_REG_LDAC_DV) | 0x100);
1263 snd_soc_write(codec, WM8900_REG_RDAC_DV,
1264 snd_soc_read(codec, WM8900_REG_RDAC_DV) | 0x100);
1265 snd_soc_write(codec, WM8900_REG_LADC_DV,
1266 snd_soc_read(codec, WM8900_REG_LADC_DV) | 0x100);
1267 snd_soc_write(codec, WM8900_REG_RADC_DV,
1268 snd_soc_read(codec, WM8900_REG_RADC_DV) | 0x100);
1269
1270 /* Set the DAC and mixer output bias */
1271 snd_soc_write(codec, WM8900_REG_OUTBIASCTL, 0x81);
1272
1273 wm8900_dai.dev = &i2c->dev;
1274
1275 wm8900_codec = codec;
1276
1277 ret = snd_soc_register_codec(codec);
1278 if (ret != 0) {
1279 dev_err(&i2c->dev, "Failed to register codec: %d\n", ret);
1280 goto err;
1281 }
1282
1283 ret = snd_soc_register_dai(&wm8900_dai);
1284 if (ret != 0) {
1285 dev_err(&i2c->dev, "Failed to register DAI: %d\n", ret);
1286 goto err_codec;
1287 }
1288
1289 return ret;
1290
1291 err_codec:
1292 snd_soc_unregister_codec(codec);
1293 err:
1294 kfree(wm8900);
1295 wm8900_codec = NULL;
1296 return ret;
1297 }
1298
1299 static __devexit int wm8900_i2c_remove(struct i2c_client *client)
1300 {
1301 snd_soc_unregister_dai(&wm8900_dai);
1302 snd_soc_unregister_codec(wm8900_codec);
1303
1304 wm8900_set_bias_level(wm8900_codec, SND_SOC_BIAS_OFF);
1305
1306 wm8900_dai.dev = NULL;
1307 kfree(wm8900_codec->private_data);
1308 wm8900_codec = NULL;
1309
1310 return 0;
1311 }
1312
1313 static const struct i2c_device_id wm8900_i2c_id[] = {
1314 { "wm8900", 0 },
1315 { }
1316 };
1317 MODULE_DEVICE_TABLE(i2c, wm8900_i2c_id);
1318
1319 static struct i2c_driver wm8900_i2c_driver = {
1320 .driver = {
1321 .name = "WM8900",
1322 .owner = THIS_MODULE,
1323 },
1324 .probe = wm8900_i2c_probe,
1325 .remove = __devexit_p(wm8900_i2c_remove),
1326 .id_table = wm8900_i2c_id,
1327 };
1328
1329 static int wm8900_probe(struct platform_device *pdev)
1330 {
1331 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1332 struct snd_soc_codec *codec;
1333 int ret = 0;
1334
1335 if (!wm8900_codec) {
1336 dev_err(&pdev->dev, "I2C client not yet instantiated\n");
1337 return -ENODEV;
1338 }
1339
1340 codec = wm8900_codec;
1341 socdev->card->codec = codec;
1342
1343 /* Register pcms */
1344 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1345 if (ret < 0) {
1346 dev_err(&pdev->dev, "Failed to register new PCMs\n");
1347 goto pcm_err;
1348 }
1349
1350 snd_soc_add_controls(codec, wm8900_snd_controls,
1351 ARRAY_SIZE(wm8900_snd_controls));
1352 wm8900_add_widgets(codec);
1353
1354 pcm_err:
1355 return ret;
1356 }
1357
1358 /* power down chip */
1359 static int wm8900_remove(struct platform_device *pdev)
1360 {
1361 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1362
1363 snd_soc_free_pcms(socdev);
1364 snd_soc_dapm_free(socdev);
1365
1366 return 0;
1367 }
1368
1369 struct snd_soc_codec_device soc_codec_dev_wm8900 = {
1370 .probe = wm8900_probe,
1371 .remove = wm8900_remove,
1372 .suspend = wm8900_suspend,
1373 .resume = wm8900_resume,
1374 };
1375 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8900);
1376
1377 static int __init wm8900_modinit(void)
1378 {
1379 return i2c_add_driver(&wm8900_i2c_driver);
1380 }
1381 module_init(wm8900_modinit);
1382
1383 static void __exit wm8900_exit(void)
1384 {
1385 i2c_del_driver(&wm8900_i2c_driver);
1386 }
1387 module_exit(wm8900_exit);
1388
1389 MODULE_DESCRIPTION("ASoC WM8900 driver");
1390 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
1391 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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