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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-15 06:52:43 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-15 06:52:43 -0400
commit37cfa1950e2a24d9fa4a593186645d8e2b5042a8 (patch)
tree9d8c9485850ba506f6cdea15bff83652d6b6ca28
parent29e02cb3ffda6ef48a50fea880f63ac8178308bb (diff)
parent25cbf465207e9616e9b7d362ee166abf296d4c1e (diff)
Merge branch 'wm8974-upstream' into for-2.6.32
Diffstat
-rw-r--r--sound/soc/codecs/Kconfig4
-rw-r--r--sound/soc/codecs/Makefile2
-rw-r--r--sound/soc/codecs/wm8974.c847
-rw-r--r--sound/soc/codecs/wm8974.h99
4 files changed, 952 insertions, 0 deletions
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 910b9162cbbb..167a5ce06cdf 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -46,6 +46,7 @@ config SND_SOC_ALL_CODECS
46 select SND_SOC_WM8960 if I2C 46 select SND_SOC_WM8960 if I2C
47 select SND_SOC_WM8961 if I2C 47 select SND_SOC_WM8961 if I2C
48 select SND_SOC_WM8971 if I2C 48 select SND_SOC_WM8971 if I2C
49 select SND_SOC_WM8974 if I2C
49 select SND_SOC_WM8988 if SND_SOC_I2C_AND_SPI 50 select SND_SOC_WM8988 if SND_SOC_I2C_AND_SPI
50 select SND_SOC_WM8990 if I2C 51 select SND_SOC_WM8990 if I2C
51 select SND_SOC_WM8993 if I2C 52 select SND_SOC_WM8993 if I2C
@@ -188,6 +189,9 @@ config SND_SOC_WM8961
188config SND_SOC_WM8971 189config SND_SOC_WM8971
189 tristate 190 tristate
190 191
192config SND_SOC_WM8974
193 tristate
194
191config SND_SOC_WM8988 195config SND_SOC_WM8988
192 tristate 196 tristate
193 197
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index c7fd2297a06f..fbab43bbe3a7 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -34,6 +34,7 @@ snd-soc-wm8940-objs := wm8940.o
34snd-soc-wm8960-objs := wm8960.o 34snd-soc-wm8960-objs := wm8960.o
35snd-soc-wm8961-objs := wm8961.o 35snd-soc-wm8961-objs := wm8961.o
36snd-soc-wm8971-objs := wm8971.o 36snd-soc-wm8971-objs := wm8971.o
37snd-soc-wm8974-objs := wm8974.o
37snd-soc-wm8988-objs := wm8988.o 38snd-soc-wm8988-objs := wm8988.o
38snd-soc-wm8990-objs := wm8990.o 39snd-soc-wm8990-objs := wm8990.o
39snd-soc-wm8993-objs := wm8993.o 40snd-soc-wm8993-objs := wm8993.o
@@ -79,6 +80,7 @@ obj-$(CONFIG_SND_SOC_WM8776) += snd-soc-wm8776.o
79obj-$(CONFIG_SND_SOC_WM8900) += snd-soc-wm8900.o 80obj-$(CONFIG_SND_SOC_WM8900) += snd-soc-wm8900.o
80obj-$(CONFIG_SND_SOC_WM8903) += snd-soc-wm8903.o 81obj-$(CONFIG_SND_SOC_WM8903) += snd-soc-wm8903.o
81obj-$(CONFIG_SND_SOC_WM8971) += snd-soc-wm8971.o 82obj-$(CONFIG_SND_SOC_WM8971) += snd-soc-wm8971.o
83obj-$(CONFIG_SND_SOC_WM8974) += snd-soc-wm8974.o
82obj-$(CONFIG_SND_SOC_WM8940) += snd-soc-wm8940.o 84obj-$(CONFIG_SND_SOC_WM8940) += snd-soc-wm8940.o
83obj-$(CONFIG_SND_SOC_WM8960) += snd-soc-wm8960.o 85obj-$(CONFIG_SND_SOC_WM8960) += snd-soc-wm8960.o
84obj-$(CONFIG_SND_SOC_WM8961) += snd-soc-wm8961.o 86obj-$(CONFIG_SND_SOC_WM8961) += snd-soc-wm8961.o
diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
new file mode 100644
index 000000000000..5104c8aa34f6
--- /dev/null
+++ b/sound/soc/codecs/wm8974.c
@@ -0,0 +1,847 @@
1/*
2 * wm8974.c -- WM8974 ALSA Soc Audio driver
3 *
4 * Copyright 2006-2009 Wolfson Microelectronics PLC.
5 *
6 * Author: Liam Girdwood <linux@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/version.h>
16#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/delay.h>
19#include <linux/pm.h>
20#include <linux/i2c.h>
21#include <linux/platform_device.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/soc-dapm.h>
27#include <sound/initval.h>
28#include <sound/tlv.h>
29
30#include "wm8974.h"
31
32static const u16 wm8974_reg[WM8974_CACHEREGNUM] = {
33 0x0000, 0x0000, 0x0000, 0x0000,
34 0x0050, 0x0000, 0x0140, 0x0000,
35 0x0000, 0x0000, 0x0000, 0x00ff,
36 0x0000, 0x0000, 0x0100, 0x00ff,
37 0x0000, 0x0000, 0x012c, 0x002c,
38 0x002c, 0x002c, 0x002c, 0x0000,
39 0x0032, 0x0000, 0x0000, 0x0000,
40 0x0000, 0x0000, 0x0000, 0x0000,
41 0x0038, 0x000b, 0x0032, 0x0000,
42 0x0008, 0x000c, 0x0093, 0x00e9,
43 0x0000, 0x0000, 0x0000, 0x0000,
44 0x0003, 0x0010, 0x0000, 0x0000,
45 0x0000, 0x0002, 0x0000, 0x0000,
46 0x0000, 0x0000, 0x0039, 0x0000,
47 0x0000,
48};
49
50#define WM8974_POWER1_BIASEN 0x08
51#define WM8974_POWER1_BUFIOEN 0x10
52
53struct wm8974_priv {
54 struct snd_soc_codec codec;
55 u16 reg_cache[WM8974_CACHEREGNUM];
56};
57
58static struct snd_soc_codec *wm8974_codec;
59
60/*
61 * read wm8974 register cache
62 */
63static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec *codec,
64 unsigned int reg)
65{
66 u16 *cache = codec->reg_cache;
67 if (reg == WM8974_RESET)
68 return 0;
69 if (reg >= WM8974_CACHEREGNUM)
70 return -1;
71 return cache[reg];
72}
73
74/*
75 * write wm8974 register cache
76 */
77static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec,
78 u16 reg, unsigned int value)
79{
80 u16 *cache = codec->reg_cache;
81 if (reg >= WM8974_CACHEREGNUM)
82 return;
83 cache[reg] = value;
84}
85
86/*
87 * write to the WM8974 register space
88 */
89static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg,
90 unsigned int value)
91{
92 u8 data[2];
93
94 /* data is
95 * D15..D9 WM8974 register offset
96 * D8...D0 register data
97 */
98 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
99 data[1] = value & 0x00ff;
100
101 wm8974_write_reg_cache(codec, reg, value);
102 if (codec->hw_write(codec->control_data, data, 2) == 2)
103 return 0;
104 else
105 return -EIO;
106}
107
108#define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0)
109
110static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
111static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
112static const char *wm8974_eqmode[] = {"Capture", "Playback" };
113static const char *wm8974_bw[] = {"Narrow", "Wide" };
114static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" };
115static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" };
116static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" };
117static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" };
118static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" };
119static const char *wm8974_alc[] = {"ALC", "Limiter" };
120
121static const struct soc_enum wm8974_enum[] = {
122 SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */
123 SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */
124 SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp),
125 SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode),
126
127 SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1),
128 SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw),
129 SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2),
130 SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw),
131
132 SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3),
133 SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw),
134 SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4),
135 SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw),
136
137 SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5),
138 SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc),
139};
140
141static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" };
142
143static const struct soc_enum wm8974_auxmode =
144 SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text);
145
146static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
147static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
148static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
149static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
150
151static const struct snd_kcontrol_new wm8974_snd_controls[] = {
152
153SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0),
154
155SOC_ENUM("DAC Companding", wm8974_enum[1]),
156SOC_ENUM("ADC Companding", wm8974_enum[0]),
157
158SOC_ENUM("Playback De-emphasis", wm8974_enum[2]),
159SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0),
160
161SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv),
162
163SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0),
164SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0),
165SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0),
166
167SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv),
168
169SOC_ENUM("Equaliser Function", wm8974_enum[3]),
170SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]),
171SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv),
172
173SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]),
174SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]),
175SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv),
176
177SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]),
178SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]),
179SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv),
180
181SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]),
182SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]),
183SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv),
184
185SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]),
186SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]),
187SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv),
188
189SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0),
190SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0),
191SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0),
192
193SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0),
194SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0),
195
196SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0),
197SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0),
198SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0),
199
200SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0),
201SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0),
202SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0),
203
204SOC_ENUM("ALC Capture Mode", wm8974_enum[13]),
205SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0),
206SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0),
207
208SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0),
209SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0),
210
211SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0),
212SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv),
213
214SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0),
215SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1),
216SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv),
217
218SOC_ENUM("Aux Mode", wm8974_auxmode),
219
220SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0),
221SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1),
222};
223
224/* Speaker Output Mixer */
225static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = {
226SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0),
227SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0),
228SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1),
229};
230
231/* Mono Output Mixer */
232static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = {
233SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0),
234SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0),
235SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0),
236};
237
238/* Boost mixer */
239static const struct snd_kcontrol_new wm8974_boost_mixer[] = {
240SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0),
241};
242
243/* Input PGA */
244static const struct snd_kcontrol_new wm8974_inpga[] = {
245SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0),
246SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0),
247SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0),
248};
249
250/* AUX Input boost vol */
251static const struct snd_kcontrol_new wm8974_aux_boost_controls =
252SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0);
253
254/* Mic Input boost vol */
255static const struct snd_kcontrol_new wm8974_mic_boost_controls =
256SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0);
257
258static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
259SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
260 &wm8974_speaker_mixer_controls[0],
261 ARRAY_SIZE(wm8974_speaker_mixer_controls)),
262SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
263 &wm8974_mono_mixer_controls[0],
264 ARRAY_SIZE(wm8974_mono_mixer_controls)),
265SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
266SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0),
267SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
268SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
269SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
270SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
271
272SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga,
273 ARRAY_SIZE(wm8974_inpga)),
274SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0,
275 wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)),
276
277SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0),
278
279SND_SOC_DAPM_INPUT("MICN"),
280SND_SOC_DAPM_INPUT("MICP"),
281SND_SOC_DAPM_INPUT("AUX"),
282SND_SOC_DAPM_OUTPUT("MONOOUT"),
283SND_SOC_DAPM_OUTPUT("SPKOUTP"),
284SND_SOC_DAPM_OUTPUT("SPKOUTN"),
285};
286
287static const struct snd_soc_dapm_route audio_map[] = {
288 /* Mono output mixer */
289 {"Mono Mixer", "PCM Playback Switch", "DAC"},
290 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
291 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
292
293 /* Speaker output mixer */
294 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
295 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
296 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
297
298 /* Outputs */
299 {"Mono Out", NULL, "Mono Mixer"},
300 {"MONOOUT", NULL, "Mono Out"},
301 {"SpkN Out", NULL, "Speaker Mixer"},
302 {"SpkP Out", NULL, "Speaker Mixer"},
303 {"SPKOUTN", NULL, "SpkN Out"},
304 {"SPKOUTP", NULL, "SpkP Out"},
305
306 /* Boost Mixer */
307 {"ADC", NULL, "Boost Mixer"},
308 {"Boost Mixer", "Aux Switch", "Aux Input"},
309 {"Boost Mixer", NULL, "Input PGA"},
310 {"Boost Mixer", NULL, "MICP"},
311
312 /* Input PGA */
313 {"Input PGA", "Aux Switch", "Aux Input"},
314 {"Input PGA", "MicN Switch", "MICN"},
315 {"Input PGA", "MicP Switch", "MICP"},
316
317 /* Inputs */
318 {"Aux Input", NULL, "AUX"},
319};
320
321static int wm8974_add_widgets(struct snd_soc_codec *codec)
322{
323 snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets,
324 ARRAY_SIZE(wm8974_dapm_widgets));
325
326 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
327
328 snd_soc_dapm_new_widgets(codec);
329 return 0;
330}
331
332struct pll_ {
333 unsigned int pre_div:4; /* prescale - 1 */
334 unsigned int n:4;
335 unsigned int k;
336};
337
338static struct pll_ pll_div;
339
340/* The size in bits of the pll divide multiplied by 10
341 * to allow rounding later */
342#define FIXED_PLL_SIZE ((1 << 24) * 10)
343
344static void pll_factors(unsigned int target, unsigned int source)
345{
346 unsigned long long Kpart;
347 unsigned int K, Ndiv, Nmod;
348
349 Ndiv = target / source;
350 if (Ndiv < 6) {
351 source >>= 1;
352 pll_div.pre_div = 1;
353 Ndiv = target / source;
354 } else
355 pll_div.pre_div = 0;
356
357 if ((Ndiv < 6) || (Ndiv > 12))
358 printk(KERN_WARNING
359 "WM8974 N value %u outwith recommended range!\n",
360 Ndiv);
361
362 pll_div.n = Ndiv;
363 Nmod = target % source;
364 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
365
366 do_div(Kpart, source);
367
368 K = Kpart & 0xFFFFFFFF;
369
370 /* Check if we need to round */
371 if ((K % 10) >= 5)
372 K += 5;
373
374 /* Move down to proper range now rounding is done */
375 K /= 10;
376
377 pll_div.k = K;
378}
379
380static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai,
381 int pll_id, unsigned int freq_in, unsigned int freq_out)
382{
383 struct snd_soc_codec *codec = codec_dai->codec;
384 u16 reg;
385
386 if (freq_in == 0 || freq_out == 0) {
387 /* Clock CODEC directly from MCLK */
388 reg = wm8974_read_reg_cache(codec, WM8974_CLOCK);
389 wm8974_write(codec, WM8974_CLOCK, reg & 0x0ff);
390
391 /* Turn off PLL */
392 reg = wm8974_read_reg_cache(codec, WM8974_POWER1);
393 wm8974_write(codec, WM8974_POWER1, reg & 0x1df);
394 return 0;
395 }
396
397 pll_factors(freq_out*4, freq_in);
398
399 wm8974_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
400 wm8974_write(codec, WM8974_PLLK1, pll_div.k >> 18);
401 wm8974_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
402 wm8974_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff);
403 reg = wm8974_read_reg_cache(codec, WM8974_POWER1);
404 wm8974_write(codec, WM8974_POWER1, reg | 0x020);
405
406 /* Run CODEC from PLL instead of MCLK */
407 reg = wm8974_read_reg_cache(codec, WM8974_CLOCK);
408 wm8974_write(codec, WM8974_CLOCK, reg | 0x100);
409
410 return 0;
411}
412
413/*
414 * Configure WM8974 clock dividers.
415 */
416static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
417 int div_id, int div)
418{
419 struct snd_soc_codec *codec = codec_dai->codec;
420 u16 reg;
421
422 switch (div_id) {
423 case WM8974_OPCLKDIV:
424 reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf;
425 wm8974_write(codec, WM8974_GPIO, reg | div);
426 break;
427 case WM8974_MCLKDIV:
428 reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f;
429 wm8974_write(codec, WM8974_CLOCK, reg | div);
430 break;
431 case WM8974_ADCCLK:
432 reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7;
433 wm8974_write(codec, WM8974_ADC, reg | div);
434 break;
435 case WM8974_DACCLK:
436 reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7;
437 wm8974_write(codec, WM8974_DAC, reg | div);
438 break;
439 case WM8974_BCLKDIV:
440 reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3;
441 wm8974_write(codec, WM8974_CLOCK, reg | div);
442 break;
443 default:
444 return -EINVAL;
445 }
446
447 return 0;
448}
449
450static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
451 unsigned int fmt)
452{
453 struct snd_soc_codec *codec = codec_dai->codec;
454 u16 iface = 0;
455 u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe;
456
457 /* set master/slave audio interface */
458 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
459 case SND_SOC_DAIFMT_CBM_CFM:
460 clk |= 0x0001;
461 break;
462 case SND_SOC_DAIFMT_CBS_CFS:
463 break;
464 default:
465 return -EINVAL;
466 }
467
468 /* interface format */
469 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
470 case SND_SOC_DAIFMT_I2S:
471 iface |= 0x0010;
472 break;
473 case SND_SOC_DAIFMT_RIGHT_J:
474 break;
475 case SND_SOC_DAIFMT_LEFT_J:
476 iface |= 0x0008;
477 break;
478 case SND_SOC_DAIFMT_DSP_A:
479 iface |= 0x00018;
480 break;
481 default:
482 return -EINVAL;
483 }
484
485 /* clock inversion */
486 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
487 case SND_SOC_DAIFMT_NB_NF:
488 break;
489 case SND_SOC_DAIFMT_IB_IF:
490 iface |= 0x0180;
491 break;
492 case SND_SOC_DAIFMT_IB_NF:
493 iface |= 0x0100;
494 break;
495 case SND_SOC_DAIFMT_NB_IF:
496 iface |= 0x0080;
497 break;
498 default:
499 return -EINVAL;
500 }
501
502 wm8974_write(codec, WM8974_IFACE, iface);
503 wm8974_write(codec, WM8974_CLOCK, clk);
504 return 0;
505}
506
507static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
508 struct snd_pcm_hw_params *params,
509 struct snd_soc_dai *dai)
510{
511 struct snd_soc_codec *codec = dai->codec;
512 u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f;
513 u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1;
514
515 /* bit size */
516 switch (params_format(params)) {
517 case SNDRV_PCM_FORMAT_S16_LE:
518 break;
519 case SNDRV_PCM_FORMAT_S20_3LE:
520 iface |= 0x0020;
521 break;
522 case SNDRV_PCM_FORMAT_S24_LE:
523 iface |= 0x0040;
524 break;
525 case SNDRV_PCM_FORMAT_S32_LE:
526 iface |= 0x0060;
527 break;
528 }
529
530 /* filter coefficient */
531 switch (params_rate(params)) {
532 case SNDRV_PCM_RATE_8000:
533 adn |= 0x5 << 1;
534 break;
535 case SNDRV_PCM_RATE_11025:
536 adn |= 0x4 << 1;
537 break;
538 case SNDRV_PCM_RATE_16000:
539 adn |= 0x3 << 1;
540 break;
541 case SNDRV_PCM_RATE_22050:
542 adn |= 0x2 << 1;
543 break;
544 case SNDRV_PCM_RATE_32000:
545 adn |= 0x1 << 1;
546 break;
547 case SNDRV_PCM_RATE_44100:
548 case SNDRV_PCM_RATE_48000:
549 break;
550 }
551
552 wm8974_write(codec, WM8974_IFACE, iface);
553 wm8974_write(codec, WM8974_ADD, adn);
554 return 0;
555}
556
557static int wm8974_mute(struct snd_soc_dai *dai, int mute)
558{
559 struct snd_soc_codec *codec = dai->codec;
560 u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf;
561
562 if (mute)
563 wm8974_write(codec, WM8974_DAC, mute_reg | 0x40);
564 else
565 wm8974_write(codec, WM8974_DAC, mute_reg);
566 return 0;
567}
568
569/* liam need to make this lower power with dapm */
570static int wm8974_set_bias_level(struct snd_soc_codec *codec,
571 enum snd_soc_bias_level level)
572{
573 u16 power1 = wm8974_read_reg_cache(codec, WM8974_POWER1) & ~0x3;
574
575 switch (level) {
576 case SND_SOC_BIAS_ON:
577 case SND_SOC_BIAS_PREPARE:
578 power1 |= 0x1; /* VMID 50k */
579 wm8974_write(codec, WM8974_POWER1, power1);
580 break;
581
582 case SND_SOC_BIAS_STANDBY:
583 power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
584
585 if (codec->bias_level == SND_SOC_BIAS_OFF) {
586 /* Initial cap charge at VMID 5k */
587 wm8974_write(codec, WM8974_POWER1, power1 | 0x3);
588 mdelay(100);
589 }
590
591 power1 |= 0x2; /* VMID 500k */
592 wm8974_write(codec, WM8974_POWER1, power1);
593 break;
594
595 case SND_SOC_BIAS_OFF:
596 wm8974_write(codec, WM8974_POWER1, 0);
597 wm8974_write(codec, WM8974_POWER2, 0);
598 wm8974_write(codec, WM8974_POWER3, 0);
599 break;
600 }
601
602 codec->bias_level = level;
603 return 0;
604}
605
606#define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
607
608#define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
609 SNDRV_PCM_FMTBIT_S24_LE)
610
611static struct snd_soc_dai_ops wm8974_ops = {
612 .hw_params = wm8974_pcm_hw_params,
613 .digital_mute = wm8974_mute,
614 .set_fmt = wm8974_set_dai_fmt,
615 .set_clkdiv = wm8974_set_dai_clkdiv,
616 .set_pll = wm8974_set_dai_pll,
617};
618
619struct snd_soc_dai wm8974_dai = {
620 .name = "WM8974 HiFi",
621 .playback = {
622 .stream_name = "Playback",
623 .channels_min = 1,
624 .channels_max = 2, /* Only 1 channel of data */
625 .rates = WM8974_RATES,
626 .formats = WM8974_FORMATS,},
627 .capture = {
628 .stream_name = "Capture",
629 .channels_min = 1,
630 .channels_max = 2, /* Only 1 channel of data */
631 .rates = WM8974_RATES,
632 .formats = WM8974_FORMATS,},
633 .ops = &wm8974_ops,
634 .symmetric_rates = 1,
635};
636EXPORT_SYMBOL_GPL(wm8974_dai);
637
638static int wm8974_suspend(struct platform_device *pdev, pm_message_t state)
639{
640 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
641 struct snd_soc_codec *codec = socdev->card->codec;
642
643 wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
644 return 0;
645}
646
647static int wm8974_resume(struct platform_device *pdev)
648{
649 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
650 struct snd_soc_codec *codec = socdev->card->codec;
651 int i;
652 u8 data[2];
653 u16 *cache = codec->reg_cache;
654
655 /* Sync reg_cache with the hardware */
656 for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) {
657 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
658 data[1] = cache[i] & 0x00ff;
659 codec->hw_write(codec->control_data, data, 2);
660 }
661 wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
662 wm8974_set_bias_level(codec, codec->suspend_bias_level);
663 return 0;
664}
665
666static int wm8974_probe(struct platform_device *pdev)
667{
668 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
669 struct snd_soc_codec *codec;
670 int ret = 0;
671
672 if (wm8974_codec == NULL) {
673 dev_err(&pdev->dev, "Codec device not registered\n");
674 return -ENODEV;
675 }
676
677 socdev->card->codec = wm8974_codec;
678 codec = wm8974_codec;
679
680 /* register pcms */
681 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
682 if (ret < 0) {
683 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
684 goto pcm_err;
685 }
686
687 snd_soc_add_controls(codec, wm8974_snd_controls,
688 ARRAY_SIZE(wm8974_snd_controls));
689 wm8974_add_widgets(codec);
690 ret = snd_soc_init_card(socdev);
691 if (ret < 0) {
692 dev_err(codec->dev, "failed to register card: %d\n", ret);
693 goto card_err;
694 }
695
696 return ret;
697
698card_err:
699 snd_soc_free_pcms(socdev);
700 snd_soc_dapm_free(socdev);
701pcm_err:
702 return ret;
703}
704
705/* power down chip */
706static int wm8974_remove(struct platform_device *pdev)
707{
708 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
709
710 snd_soc_free_pcms(socdev);
711 snd_soc_dapm_free(socdev);
712
713 return 0;
714}
715
716struct snd_soc_codec_device soc_codec_dev_wm8974 = {
717 .probe = wm8974_probe,
718 .remove = wm8974_remove,
719 .suspend = wm8974_suspend,
720 .resume = wm8974_resume,
721};
722EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974);
723
724static __devinit int wm8974_register(struct wm8974_priv *wm8974)
725{
726 int ret;
727 struct snd_soc_codec *codec = &wm8974->codec;
728
729 if (wm8974_codec) {
730 dev_err(codec->dev, "Another WM8974 is registered\n");
731 return -EINVAL;
732 }
733
734 mutex_init(&codec->mutex);
735 INIT_LIST_HEAD(&codec->dapm_widgets);
736 INIT_LIST_HEAD(&codec->dapm_paths);
737
738 codec->private_data = wm8974;
739 codec->name = "WM8974";
740 codec->owner = THIS_MODULE;
741 codec->read = wm8974_read_reg_cache;
742 codec->write = wm8974_write;
743 codec->bias_level = SND_SOC_BIAS_OFF;
744 codec->set_bias_level = wm8974_set_bias_level;
745 codec->dai = &wm8974_dai;
746 codec->num_dai = 1;
747 codec->reg_cache_size = WM8974_CACHEREGNUM;
748 codec->reg_cache = &wm8974->reg_cache;
749
750 memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg));
751
752 ret = wm8974_reset(codec);
753 if (ret < 0) {
754 dev_err(codec->dev, "Failed to issue reset\n");
755 return ret;
756 }
757
758 wm8974_dai.dev = codec->dev;
759
760 wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
761
762 wm8974_codec = codec;
763
764 ret = snd_soc_register_codec(codec);
765 if (ret != 0) {
766 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
767 return ret;
768 }
769
770 ret = snd_soc_register_dai(&wm8974_dai);
771 if (ret != 0) {
772 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
773 snd_soc_unregister_codec(codec);
774 return ret;
775 }
776
777 return 0;
778}
779
780static __devexit void wm8974_unregister(struct wm8974_priv *wm8974)
781{
782 wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF);
783 snd_soc_unregister_dai(&wm8974_dai);
784 snd_soc_unregister_codec(&wm8974->codec);
785 kfree(wm8974);
786 wm8974_codec = NULL;
787}
788
789static __devinit int wm8974_i2c_probe(struct i2c_client *i2c,
790 const struct i2c_device_id *id)
791{
792 struct wm8974_priv *wm8974;
793 struct snd_soc_codec *codec;
794
795 wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL);
796 if (wm8974 == NULL)
797 return -ENOMEM;
798
799 codec = &wm8974->codec;
800 codec->hw_write = (hw_write_t)i2c_master_send;
801
802 i2c_set_clientdata(i2c, wm8974);
803 codec->control_data = i2c;
804
805 codec->dev = &i2c->dev;
806
807 return wm8974_register(wm8974);
808}
809
810static __devexit int wm8974_i2c_remove(struct i2c_client *client)
811{
812 struct wm8974_priv *wm8974 = i2c_get_clientdata(client);
813 wm8974_unregister(wm8974);
814 return 0;
815}
816
817static const struct i2c_device_id wm8974_i2c_id[] = {
818 { "wm8974", 0 },
819 { }
820};
821MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
822
823static struct i2c_driver wm8974_i2c_driver = {
824 .driver = {
825 .name = "WM8974",
826 .owner = THIS_MODULE,
827 },
828 .probe = wm8974_i2c_probe,
829 .remove = __devexit_p(wm8974_i2c_remove),
830 .id_table = wm8974_i2c_id,
831};
832
833static int __init wm8974_modinit(void)
834{
835 return i2c_add_driver(&wm8974_i2c_driver);
836}
837module_init(wm8974_modinit);
838
839static void __exit wm8974_exit(void)
840{
841 i2c_del_driver(&wm8974_i2c_driver);
842}
843module_exit(wm8974_exit);
844
845MODULE_DESCRIPTION("ASoC WM8974 driver");
846MODULE_AUTHOR("Liam Girdwood");
847MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/wm8974.h b/sound/soc/codecs/wm8974.h
new file mode 100644
index 000000000000..98de9562d4d2
--- /dev/null
+++ b/sound/soc/codecs/wm8974.h
@@ -0,0 +1,99 @@
1/*
2 * wm8974.h -- WM8974 Soc Audio driver
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#ifndef _WM8974_H
10#define _WM8974_H
11
12/* WM8974 register space */
13
14#define WM8974_RESET 0x0
15#define WM8974_POWER1 0x1
16#define WM8974_POWER2 0x2
17#define WM8974_POWER3 0x3
18#define WM8974_IFACE 0x4
19#define WM8974_COMP 0x5
20#define WM8974_CLOCK 0x6
21#define WM8974_ADD 0x7
22#define WM8974_GPIO 0x8
23#define WM8974_DAC 0xa
24#define WM8974_DACVOL 0xb
25#define WM8974_ADC 0xe
26#define WM8974_ADCVOL 0xf
27#define WM8974_EQ1 0x12
28#define WM8974_EQ2 0x13
29#define WM8974_EQ3 0x14
30#define WM8974_EQ4 0x15
31#define WM8974_EQ5 0x16
32#define WM8974_DACLIM1 0x18
33#define WM8974_DACLIM2 0x19
34#define WM8974_NOTCH1 0x1b
35#define WM8974_NOTCH2 0x1c
36#define WM8974_NOTCH3 0x1d
37#define WM8974_NOTCH4 0x1e
38#define WM8974_ALC1 0x20
39#define WM8974_ALC2 0x21
40#define WM8974_ALC3 0x22
41#define WM8974_NGATE 0x23
42#define WM8974_PLLN 0x24
43#define WM8974_PLLK1 0x25
44#define WM8974_PLLK2 0x26
45#define WM8974_PLLK3 0x27
46#define WM8974_ATTEN 0x28
47#define WM8974_INPUT 0x2c
48#define WM8974_INPPGA 0x2d
49#define WM8974_ADCBOOST 0x2f
50#define WM8974_OUTPUT 0x31
51#define WM8974_SPKMIX 0x32
52#define WM8974_SPKVOL 0x36
53#define WM8974_MONOMIX 0x38
54
55#define WM8974_CACHEREGNUM 57
56
57/* Clock divider Id's */
58#define WM8974_OPCLKDIV 0
59#define WM8974_MCLKDIV 1
60#define WM8974_ADCCLK 2
61#define WM8974_DACCLK 3
62#define WM8974_BCLKDIV 4
63
64/* DAC clock dividers */
65#define WM8974_DACCLK_F2 (1 << 3)
66#define WM8974_DACCLK_F4 (0 << 3)
67
68/* ADC clock dividers */
69#define WM8974_ADCCLK_F2 (1 << 3)
70#define WM8974_ADCCLK_F4 (0 << 3)
71
72/* PLL Out dividers */
73#define WM8974_OPCLKDIV_1 (0 << 4)
74#define WM8974_OPCLKDIV_2 (1 << 4)
75#define WM8974_OPCLKDIV_3 (2 << 4)
76#define WM8974_OPCLKDIV_4 (3 << 4)
77
78/* BCLK clock dividers */
79#define WM8974_BCLKDIV_1 (0 << 2)
80#define WM8974_BCLKDIV_2 (1 << 2)
81#define WM8974_BCLKDIV_4 (2 << 2)
82#define WM8974_BCLKDIV_8 (3 << 2)
83#define WM8974_BCLKDIV_16 (4 << 2)
84#define WM8974_BCLKDIV_32 (5 << 2)
85
86/* MCLK clock dividers */
87#define WM8974_MCLKDIV_1 (0 << 5)
88#define WM8974_MCLKDIV_1_5 (1 << 5)
89#define WM8974_MCLKDIV_2 (2 << 5)
90#define WM8974_MCLKDIV_3 (3 << 5)
91#define WM8974_MCLKDIV_4 (4 << 5)
92#define WM8974_MCLKDIV_6 (5 << 5)
93#define WM8974_MCLKDIV_8 (6 << 5)
94#define WM8974_MCLKDIV_12 (7 << 5)
95
96extern struct snd_soc_dai wm8974_dai;
97extern struct snd_soc_codec_device soc_codec_dev_wm8974;
98
99#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 22:19:43 -0500