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linux/sound/soc/codecs/wm8960.c

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/*
* wm8960.c -- WM8960 ALSA SoC Audio driver
*
* Copyright 2007-11 Wolfson Microelectronics, plc
*
* Author: Liam Girdwood
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/wm8960.h>
#include "wm8960.h"
/* R25 - Power 1 */
#define WM8960_VMID_MASK 0x180
#define WM8960_VREF 0x40
/* R26 - Power 2 */
#define WM8960_PWR2_LOUT1 0x40
#define WM8960_PWR2_ROUT1 0x20
#define WM8960_PWR2_OUT3 0x02
/* R28 - Anti-pop 1 */
#define WM8960_POBCTRL 0x80
#define WM8960_BUFDCOPEN 0x10
#define WM8960_BUFIOEN 0x08
#define WM8960_SOFT_ST 0x04
#define WM8960_HPSTBY 0x01
/* R29 - Anti-pop 2 */
#define WM8960_DISOP 0x40
#define WM8960_DRES_MASK 0x30
/*
* wm8960 register cache
* We can't read the WM8960 register space when we are
* using 2 wire for device control, so we cache them instead.
*/
static const struct reg_default wm8960_reg_defaults[] = {
{ 0x0, 0x0097 },
{ 0x1, 0x0097 },
{ 0x2, 0x0000 },
{ 0x3, 0x0000 },
{ 0x4, 0x0000 },
{ 0x5, 0x0008 },
{ 0x6, 0x0000 },
{ 0x7, 0x000a },
{ 0x8, 0x01c0 },
{ 0x9, 0x0000 },
{ 0xa, 0x00ff },
{ 0xb, 0x00ff },
{ 0x10, 0x0000 },
{ 0x11, 0x007b },
{ 0x12, 0x0100 },
{ 0x13, 0x0032 },
{ 0x14, 0x0000 },
{ 0x15, 0x00c3 },
{ 0x16, 0x00c3 },
{ 0x17, 0x01c0 },
{ 0x18, 0x0000 },
{ 0x19, 0x0000 },
{ 0x1a, 0x0000 },
{ 0x1b, 0x0000 },
{ 0x1c, 0x0000 },
{ 0x1d, 0x0000 },
{ 0x20, 0x0100 },
{ 0x21, 0x0100 },
{ 0x22, 0x0050 },
{ 0x25, 0x0050 },
{ 0x26, 0x0000 },
{ 0x27, 0x0000 },
{ 0x28, 0x0000 },
{ 0x29, 0x0000 },
{ 0x2a, 0x0040 },
{ 0x2b, 0x0000 },
{ 0x2c, 0x0000 },
{ 0x2d, 0x0050 },
{ 0x2e, 0x0050 },
{ 0x2f, 0x0000 },
{ 0x30, 0x0002 },
{ 0x31, 0x0037 },
{ 0x33, 0x0080 },
{ 0x34, 0x0008 },
{ 0x35, 0x0031 },
{ 0x36, 0x0026 },
{ 0x37, 0x00e9 },
};
static bool wm8960_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8960_RESET:
return true;
default:
return false;
}
}
struct wm8960_priv {
struct regmap *regmap;
int (*set_bias_level)(struct snd_soc_codec *,
enum snd_soc_bias_level level);
struct snd_soc_dapm_widget *lout1;
struct snd_soc_dapm_widget *rout1;
struct snd_soc_dapm_widget *out3;
bool deemph;
int playback_fs;
};
#define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
/* enumerated controls */
static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
"Right Inverted", "Stereo Inversion"};
static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
static const struct soc_enum wm8960_enum[] = {
SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
};
static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
static int wm8960_set_deemph(struct snd_soc_codec *codec)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
int val, i, best;
/* If we're using deemphasis select the nearest available sample
* rate.
*/
if (wm8960->deemph) {
best = 1;
for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
if (abs(deemph_settings[i] - wm8960->playback_fs) <
abs(deemph_settings[best] - wm8960->playback_fs))
best = i;
}
val = best << 1;
} else {
val = 0;
}
dev_dbg(codec->dev, "Set deemphasis %d\n", val);
return snd_soc_update_bits(codec, WM8960_DACCTL1,
0x6, val);
}
static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
ucontrol->value.enumerated.item[0] = wm8960->deemph;
return 0;
}
static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
int deemph = ucontrol->value.enumerated.item[0];
if (deemph > 1)
return -EINVAL;
wm8960->deemph = deemph;
return wm8960_set_deemph(codec);
}
static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
static const struct snd_kcontrol_new wm8960_snd_controls[] = {
SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
0, 63, 0, adc_tlv),
SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
6, 1, 0),
SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
7, 1, 0),
SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
0, 255, 0, dac_tlv),
SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
0, 127, 0, out_tlv),
SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
7, 1, 0),
SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
0, 127, 0, out_tlv),
SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
7, 1, 0),
SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
SOC_ENUM("ADC Polarity", wm8960_enum[0]),
SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
SOC_ENUM("DAC Polarity", wm8960_enum[2]),
SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
wm8960_get_deemph, wm8960_put_deemph),
SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
SOC_ENUM("ALC Function", wm8960_enum[4]),
SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
SOC_ENUM("ALC Mode", wm8960_enum[5]),
SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
0, 127, 0),
SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
};
static const struct snd_kcontrol_new wm8960_lin_boost[] = {
SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
};
static const struct snd_kcontrol_new wm8960_lin[] = {
SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
};
static const struct snd_kcontrol_new wm8960_rin_boost[] = {
SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
};
static const struct snd_kcontrol_new wm8960_rin[] = {
SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
};
static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
};
static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
};
static const struct snd_kcontrol_new wm8960_mono_out[] = {
SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
};
static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("LINPUT1"),
SND_SOC_DAPM_INPUT("RINPUT1"),
SND_SOC_DAPM_INPUT("LINPUT2"),
SND_SOC_DAPM_INPUT("RINPUT2"),
SND_SOC_DAPM_INPUT("LINPUT3"),
SND_SOC_DAPM_INPUT("RINPUT3"),
SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
wm8960_lin, ARRAY_SIZE(wm8960_lin)),
SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
wm8960_rin, ARRAY_SIZE(wm8960_rin)),
SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
&wm8960_loutput_mixer[0],
ARRAY_SIZE(wm8960_loutput_mixer)),
SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
&wm8960_routput_mixer[0],
ARRAY_SIZE(wm8960_routput_mixer)),
SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("SPK_LP"),
SND_SOC_DAPM_OUTPUT("SPK_LN"),
SND_SOC_DAPM_OUTPUT("HP_L"),
SND_SOC_DAPM_OUTPUT("HP_R"),
SND_SOC_DAPM_OUTPUT("SPK_RP"),
SND_SOC_DAPM_OUTPUT("SPK_RN"),
SND_SOC_DAPM_OUTPUT("OUT3"),
};
static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
&wm8960_mono_out[0],
ARRAY_SIZE(wm8960_mono_out)),
};
/* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
};
static const struct snd_soc_dapm_route audio_paths[] = {
{ "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
{ "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
{ "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
{ "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
{ "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
{ "Left Input Mixer", NULL, "LINPUT2" },
{ "Left Input Mixer", NULL, "LINPUT3" },
{ "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
{ "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
{ "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
{ "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
{ "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
{ "Right Input Mixer", NULL, "RINPUT2" },
{ "Right Input Mixer", NULL, "LINPUT3" },
{ "Left ADC", NULL, "Left Input Mixer" },
{ "Right ADC", NULL, "Right Input Mixer" },
{ "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
{ "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
{ "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
{ "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
{ "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
{ "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
{ "LOUT1 PGA", NULL, "Left Output Mixer" },
{ "ROUT1 PGA", NULL, "Right Output Mixer" },
{ "HP_L", NULL, "LOUT1 PGA" },
{ "HP_R", NULL, "ROUT1 PGA" },
{ "Left Speaker PGA", NULL, "Left Output Mixer" },
{ "Right Speaker PGA", NULL, "Right Output Mixer" },
{ "Left Speaker Output", NULL, "Left Speaker PGA" },
{ "Right Speaker Output", NULL, "Right Speaker PGA" },
{ "SPK_LN", NULL, "Left Speaker Output" },
{ "SPK_LP", NULL, "Left Speaker Output" },
{ "SPK_RN", NULL, "Right Speaker Output" },
{ "SPK_RP", NULL, "Right Speaker Output" },
};
static const struct snd_soc_dapm_route audio_paths_out3[] = {
{ "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
{ "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
{ "OUT3", NULL, "Mono Output Mixer", }
};
static const struct snd_soc_dapm_route audio_paths_capless[] = {
{ "HP_L", NULL, "OUT3 VMID" },
{ "HP_R", NULL, "OUT3 VMID" },
{ "OUT3 VMID", NULL, "Left Output Mixer" },
{ "OUT3 VMID", NULL, "Right Output Mixer" },
};
static int wm8960_add_widgets(struct snd_soc_codec *codec)
{
struct wm8960_data *pdata = codec->dev->platform_data;
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
struct snd_soc_dapm_context *dapm = &codec->dapm;
struct snd_soc_dapm_widget *w;
snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
ARRAY_SIZE(wm8960_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
/* In capless mode OUT3 is used to provide VMID for the
* headphone outputs, otherwise it is used as a mono mixer.
*/
if (pdata && pdata->capless) {
snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
ARRAY_SIZE(wm8960_dapm_widgets_capless));
snd_soc_dapm_add_routes(dapm, audio_paths_capless,
ARRAY_SIZE(audio_paths_capless));
} else {
snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
ARRAY_SIZE(wm8960_dapm_widgets_out3));
snd_soc_dapm_add_routes(dapm, audio_paths_out3,
ARRAY_SIZE(audio_paths_out3));
}
/* We need to power up the headphone output stage out of
* sequence for capless mode. To save scanning the widget
* list each time to find the desired power state do so now
* and save the result.
*/
list_for_each_entry(w, &codec->card->widgets, list) {
if (w->dapm != &codec->dapm)
continue;
if (strcmp(w->name, "LOUT1 PGA") == 0)
wm8960->lout1 = w;
if (strcmp(w->name, "ROUT1 PGA") == 0)
wm8960->rout1 = w;
if (strcmp(w->name, "OUT3 VMID") == 0)
wm8960->out3 = w;
}
return 0;
}
static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 iface = 0;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
iface |= 0x0040;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
iface |= 0x0002;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
iface |= 0x0001;
break;
case SND_SOC_DAIFMT_DSP_A:
iface |= 0x0003;
break;
case SND_SOC_DAIFMT_DSP_B:
iface |= 0x0013;
break;
default:
return -EINVAL;
}
/* clock inversion */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
iface |= 0x0090;
break;
case SND_SOC_DAIFMT_IB_NF:
iface |= 0x0080;
break;
case SND_SOC_DAIFMT_NB_IF:
iface |= 0x0010;
break;
default:
return -EINVAL;
}
/* set iface */
snd_soc_write(codec, WM8960_IFACE1, iface);
return 0;
}
static struct {
int rate;
unsigned int val;
} alc_rates[] = {
{ 48000, 0 },
{ 44100, 0 },
{ 32000, 1 },
{ 22050, 2 },
{ 24000, 2 },
{ 16000, 3 },
{ 11250, 4 },
{ 12000, 4 },
{ 8000, 5 },
};
static int wm8960_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
snd_pcm_format_t format = params_format(params);
int i;
/* bit size */
switch (format) {
case SNDRV_PCM_FORMAT_S16_LE:
case SNDRV_PCM_FORMAT_S16_BE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
case SNDRV_PCM_FORMAT_S20_3BE:
iface |= 0x0004;
break;
case SNDRV_PCM_FORMAT_S24_LE:
case SNDRV_PCM_FORMAT_S24_BE:
iface |= 0x0008;
break;
default:
dev_err(codec->dev, "unsupported format %i\n", format);
return -EINVAL;
}
/* Update filters for the new rate */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
wm8960->playback_fs = params_rate(params);
wm8960_set_deemph(codec);
} else {
for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
if (alc_rates[i].rate == params_rate(params))
snd_soc_update_bits(codec,
WM8960_ADDCTL3, 0x7,
alc_rates[i].val);
}
/* set iface */
snd_soc_write(codec, WM8960_IFACE1, iface);
return 0;
}
static int wm8960_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
if (mute)
snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
else
snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
return 0;
}
static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
/* Set VMID to 2x50k */
snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
regcache_sync(wm8960->regmap);
/* Enable anti-pop features */
snd_soc_write(codec, WM8960_APOP1,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN | WM8960_BUFIOEN);
/* Enable & ramp VMID at 2x50k */
snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
msleep(100);
/* Enable VREF */
snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
WM8960_VREF);
/* Disable anti-pop features */
snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
}
/* Set VMID to 2x250k */
snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
break;
case SND_SOC_BIAS_OFF:
/* Enable anti-pop features */
snd_soc_write(codec, WM8960_APOP1,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN | WM8960_BUFIOEN);
/* Disable VMID and VREF, let them discharge */
snd_soc_write(codec, WM8960_POWER1, 0);
msleep(600);
break;
}
codec->dapm.bias_level = level;
return 0;
}
static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
int reg;
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
switch (codec->dapm.bias_level) {
case SND_SOC_BIAS_STANDBY:
/* Enable anti pop mode */
snd_soc_update_bits(codec, WM8960_APOP1,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN);
/* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
reg = 0;
if (wm8960->lout1 && wm8960->lout1->power)
reg |= WM8960_PWR2_LOUT1;
if (wm8960->rout1 && wm8960->rout1->power)
reg |= WM8960_PWR2_ROUT1;
if (wm8960->out3 && wm8960->out3->power)
reg |= WM8960_PWR2_OUT3;
snd_soc_update_bits(codec, WM8960_POWER2,
WM8960_PWR2_LOUT1 |
WM8960_PWR2_ROUT1 |
WM8960_PWR2_OUT3, reg);
/* Enable VMID at 2*50k */
snd_soc_update_bits(codec, WM8960_POWER1,
WM8960_VMID_MASK, 0x80);
/* Ramp */
msleep(100);
/* Enable VREF */
snd_soc_update_bits(codec, WM8960_POWER1,
WM8960_VREF, WM8960_VREF);
msleep(100);
break;
case SND_SOC_BIAS_ON:
/* Enable anti-pop mode */
snd_soc_update_bits(codec, WM8960_APOP1,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN);
/* Disable VMID and VREF */
snd_soc_update_bits(codec, WM8960_POWER1,
WM8960_VREF | WM8960_VMID_MASK, 0);
break;
case SND_SOC_BIAS_OFF:
regcache_sync(wm8960->regmap);
break;
default:
break;
}
break;
case SND_SOC_BIAS_STANDBY:
switch (codec->dapm.bias_level) {
case SND_SOC_BIAS_PREPARE:
/* Disable HP discharge */
snd_soc_update_bits(codec, WM8960_APOP2,
WM8960_DISOP | WM8960_DRES_MASK,
0);
/* Disable anti-pop features */
snd_soc_update_bits(codec, WM8960_APOP1,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN,
WM8960_POBCTRL | WM8960_SOFT_ST |
WM8960_BUFDCOPEN);
break;
default:
break;
}
break;
case SND_SOC_BIAS_OFF:
break;
}
codec->dapm.bias_level = level;
return 0;
}
/* PLL divisors */
struct _pll_div {
u32 pre_div:1;
u32 n:4;
u32 k:24;
};
/* The size in bits of the pll divide multiplied by 10
* to allow rounding later */
#define FIXED_PLL_SIZE ((1 << 24) * 10)
static int pll_factors(unsigned int source, unsigned int target,
struct _pll_div *pll_div)
{
unsigned long long Kpart;
unsigned int K, Ndiv, Nmod;
pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
/* Scale up target to PLL operating frequency */
target *= 4;
Ndiv = target / source;
if (Ndiv < 6) {
source >>= 1;
pll_div->pre_div = 1;
Ndiv = target / source;
} else
pll_div->pre_div = 0;
if ((Ndiv < 6) || (Ndiv > 12)) {
pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
return -EINVAL;
}
pll_div->n = Ndiv;
Nmod = target % source;
Kpart = FIXED_PLL_SIZE * (long long)Nmod;
do_div(Kpart, source);
K = Kpart & 0xFFFFFFFF;
/* Check if we need to round */
if ((K % 10) >= 5)
K += 5;
/* Move down to proper range now rounding is done */
K /= 10;
pll_div->k = K;
pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
pll_div->n, pll_div->k, pll_div->pre_div);
return 0;
}
static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 reg;
static struct _pll_div pll_div;
int ret;
if (freq_in && freq_out) {
ret = pll_factors(freq_in, freq_out, &pll_div);
if (ret != 0)
return ret;
}
/* Disable the PLL: even if we are changing the frequency the
* PLL needs to be disabled while we do so. */
snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
if (!freq_in || !freq_out)
return 0;
reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
reg |= pll_div.pre_div << 4;
reg |= pll_div.n;
if (pll_div.k) {
reg |= 0x20;
snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
}
snd_soc_write(codec, WM8960_PLL1, reg);
/* Turn it on */
snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
msleep(250);
snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
return 0;
}
static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
int div_id, int div)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 reg;
switch (div_id) {
case WM8960_SYSCLKDIV:
reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
snd_soc_write(codec, WM8960_CLOCK1, reg | div);
break;
case WM8960_DACDIV:
reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
snd_soc_write(codec, WM8960_CLOCK1, reg | div);
break;
case WM8960_OPCLKDIV:
reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
snd_soc_write(codec, WM8960_PLL1, reg | div);
break;
case WM8960_DCLKDIV:
reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
snd_soc_write(codec, WM8960_CLOCK2, reg | div);
break;
case WM8960_TOCLKSEL:
reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
break;
default:
return -EINVAL;
}
return 0;
}
static int wm8960_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
return wm8960->set_bias_level(codec, level);
}
#define WM8960_RATES SNDRV_PCM_RATE_8000_48000
#define WM8960_FORMATS \
(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
SNDRV_PCM_FMTBIT_S24_LE)
static const struct snd_soc_dai_ops wm8960_dai_ops = {
.hw_params = wm8960_hw_params,
.digital_mute = wm8960_mute,
.set_fmt = wm8960_set_dai_fmt,
.set_clkdiv = wm8960_set_dai_clkdiv,
.set_pll = wm8960_set_dai_pll,
};
static struct snd_soc_dai_driver wm8960_dai = {
.name = "wm8960-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8960_RATES,
.formats = WM8960_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8960_RATES,
.formats = WM8960_FORMATS,},
.ops = &wm8960_dai_ops,
.symmetric_rates = 1,
};
static int wm8960_suspend(struct snd_soc_codec *codec)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8960_resume(struct snd_soc_codec *codec)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
static int wm8960_probe(struct snd_soc_codec *codec)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
struct wm8960_data *pdata = dev_get_platdata(codec->dev);
int ret;
wm8960->set_bias_level = wm8960_set_bias_level_out3;
if (!pdata) {
dev_warn(codec->dev, "No platform data supplied\n");
} else {
if (pdata->capless)
wm8960->set_bias_level = wm8960_set_bias_level_capless;
}
ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
return ret;
}
ret = wm8960_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
return ret;
}
wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Latch the update bits */
snd_soc_update_bits(codec, WM8960_LINVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_RINVOL, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_LADC, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_RADC, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_LDAC, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_RDAC, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_LOUT1, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_ROUT1, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_LOUT2, 0x100, 0x100);
snd_soc_update_bits(codec, WM8960_ROUT2, 0x100, 0x100);
snd_soc_add_codec_controls(codec, wm8960_snd_controls,
ARRAY_SIZE(wm8960_snd_controls));
wm8960_add_widgets(codec);
return 0;
}
/* power down chip */
static int wm8960_remove(struct snd_soc_codec *codec)
{
struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
.probe = wm8960_probe,
.remove = wm8960_remove,
.suspend = wm8960_suspend,
.resume = wm8960_resume,
.set_bias_level = wm8960_set_bias_level,
};
static const struct regmap_config wm8960_regmap = {
.reg_bits = 7,
.val_bits = 9,
.max_register = WM8960_PLL4,
.reg_defaults = wm8960_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.volatile_reg = wm8960_volatile,
};
static int wm8960_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
struct wm8960_priv *wm8960;
int ret;
wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
GFP_KERNEL);
if (wm8960 == NULL)
return -ENOMEM;
wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
if (IS_ERR(wm8960->regmap))
return PTR_ERR(wm8960->regmap);
if (pdata && pdata->shared_lrclk) {
ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2,
0x4, 0x4);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to enable LRCM: %d\n",
ret);
return ret;
}
}
i2c_set_clientdata(i2c, wm8960);
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8960, &wm8960_dai, 1);
return ret;
}
static int wm8960_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id wm8960_i2c_id[] = {
{ "wm8960", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
static struct i2c_driver wm8960_i2c_driver = {
.driver = {
.name = "wm8960",
.owner = THIS_MODULE,
},
.probe = wm8960_i2c_probe,
.remove = wm8960_i2c_remove,
.id_table = wm8960_i2c_id,
};
module_i2c_driver(wm8960_i2c_driver);
MODULE_DESCRIPTION("ASoC WM8960 driver");
MODULE_AUTHOR("Liam Girdwood");
MODULE_LICENSE("GPL");
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