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linux-sg2042/sound/soc/codecs/wm8962.c

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/*
* wm8962.c -- WM8962 ALSA SoC Audio driver
*
* Copyright 2010 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
*
* 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/gcd.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/wm8962.h>
#include "wm8962.h"
#define WM8962_NUM_SUPPLIES 8
static const char *wm8962_supply_names[WM8962_NUM_SUPPLIES] = {
"DCVDD",
"DBVDD",
"AVDD",
"CPVDD",
"MICVDD",
"PLLVDD",
"SPKVDD1",
"SPKVDD2",
};
/* codec private data */
struct wm8962_priv {
struct snd_soc_codec *codec;
u16 reg_cache[WM8962_MAX_REGISTER + 1];
int sysclk;
int sysclk_rate;
int bclk; /* Desired BCLK */
int lrclk;
int fll_src;
int fll_fref;
int fll_fout;
struct regulator_bulk_data supplies[WM8962_NUM_SUPPLIES];
struct notifier_block disable_nb[WM8962_NUM_SUPPLIES];
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
struct input_dev *beep;
struct work_struct beep_work;
int beep_rate;
#endif
};
/* We can't use the same notifier block for more than one supply and
* there's no way I can see to get from a callback to the caller
* except container_of().
*/
#define WM8962_REGULATOR_EVENT(n) \
static int wm8962_regulator_event_##n(struct notifier_block *nb, \
unsigned long event, void *data) \
{ \
struct wm8962_priv *wm8962 = container_of(nb, struct wm8962_priv, \
disable_nb[n]); \
if (event & REGULATOR_EVENT_DISABLE) { \
wm8962->codec->cache_sync = 1; \
} \
return 0; \
}
WM8962_REGULATOR_EVENT(0)
WM8962_REGULATOR_EVENT(1)
WM8962_REGULATOR_EVENT(2)
WM8962_REGULATOR_EVENT(3)
WM8962_REGULATOR_EVENT(4)
WM8962_REGULATOR_EVENT(5)
WM8962_REGULATOR_EVENT(6)
WM8962_REGULATOR_EVENT(7)
static int wm8962_volatile_register(unsigned int reg)
{
if (wm8962_reg_access[reg].vol)
return 1;
else
return 0;
}
static int wm8962_readable_register(unsigned int reg)
{
if (wm8962_reg_access[reg].read)
return 1;
else
return 0;
}
static int wm8962_reset(struct snd_soc_codec *codec)
{
return snd_soc_write(codec, WM8962_SOFTWARE_RESET, 0);
}
static const DECLARE_TLV_DB_SCALE(inpga_tlv, -2325, 75, 0);
static const DECLARE_TLV_DB_SCALE(mixin_tlv, -1500, 300, 0);
static const unsigned int mixinpga_tlv[] = {
TLV_DB_RANGE_HEAD(7),
0, 1, TLV_DB_SCALE_ITEM(0, 600, 0),
2, 2, TLV_DB_SCALE_ITEM(1300, 1300, 0),
3, 4, TLV_DB_SCALE_ITEM(1800, 200, 0),
5, 5, TLV_DB_SCALE_ITEM(2400, 0, 0),
6, 7, TLV_DB_SCALE_ITEM(2700, 300, 0),
};
static const DECLARE_TLV_DB_SCALE(beep_tlv, -9600, 600, 1);
static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
static const DECLARE_TLV_DB_SCALE(st_tlv, -3600, 300, 0);
static const DECLARE_TLV_DB_SCALE(inmix_tlv, -600, 600, 0);
static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
static const DECLARE_TLV_DB_SCALE(hp_tlv, -700, 100, 0);
static const unsigned int classd_tlv[] = {
TLV_DB_RANGE_HEAD(7),
0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0),
};
/* The VU bits for the headphones are in a different register to the mute
* bits and only take effect on the PGA if it is actually powered.
*/
static int wm8962_put_hp_sw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
u16 *reg_cache = wm8962->reg_cache;
int ret;
/* Apply the update (if any) */
ret = snd_soc_put_volsw(kcontrol, ucontrol);
if (ret == 0)
return 0;
/* If the left PGA is enabled hit that VU bit... */
if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_HPOUTL_PGA_ENA)
return snd_soc_write(codec, WM8962_HPOUTL_VOLUME,
reg_cache[WM8962_HPOUTL_VOLUME]);
/* ...otherwise the right. The VU is stereo. */
if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_HPOUTR_PGA_ENA)
return snd_soc_write(codec, WM8962_HPOUTR_VOLUME,
reg_cache[WM8962_HPOUTR_VOLUME]);
return 0;
}
/* The VU bits for the speakers are in a different register to the mute
* bits and only take effect on the PGA if it is actually powered.
*/
static int wm8962_put_spk_sw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
u16 *reg_cache = wm8962->reg_cache;
int ret;
/* Apply the update (if any) */
ret = snd_soc_put_volsw(kcontrol, ucontrol);
if (ret == 0)
return 0;
/* If the left PGA is enabled hit that VU bit... */
if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_SPKOUTL_PGA_ENA)
return snd_soc_write(codec, WM8962_SPKOUTL_VOLUME,
reg_cache[WM8962_SPKOUTL_VOLUME]);
/* ...otherwise the right. The VU is stereo. */
if (reg_cache[WM8962_PWR_MGMT_2] & WM8962_SPKOUTR_PGA_ENA)
return snd_soc_write(codec, WM8962_SPKOUTR_VOLUME,
reg_cache[WM8962_SPKOUTR_VOLUME]);
return 0;
}
static const struct snd_kcontrol_new wm8962_snd_controls[] = {
SOC_DOUBLE("Input Mixer Switch", WM8962_INPUT_MIXER_CONTROL_1, 3, 2, 1, 1),
SOC_SINGLE_TLV("MIXINL IN2L Volume", WM8962_LEFT_INPUT_MIXER_VOLUME, 6, 7, 0,
mixin_tlv),
SOC_SINGLE_TLV("MIXINL PGA Volume", WM8962_LEFT_INPUT_MIXER_VOLUME, 3, 7, 0,
mixinpga_tlv),
SOC_SINGLE_TLV("MIXINL IN3L Volume", WM8962_LEFT_INPUT_MIXER_VOLUME, 0, 7, 0,
mixin_tlv),
SOC_SINGLE_TLV("MIXINR IN2R Volume", WM8962_RIGHT_INPUT_MIXER_VOLUME, 6, 7, 0,
mixin_tlv),
SOC_SINGLE_TLV("MIXINR PGA Volume", WM8962_RIGHT_INPUT_MIXER_VOLUME, 3, 7, 0,
mixinpga_tlv),
SOC_SINGLE_TLV("MIXINR IN3R Volume", WM8962_RIGHT_INPUT_MIXER_VOLUME, 0, 7, 0,
mixin_tlv),
SOC_DOUBLE_R_TLV("Digital Capture Volume", WM8962_LEFT_ADC_VOLUME,
WM8962_RIGHT_ADC_VOLUME, 1, 127, 0, digital_tlv),
SOC_DOUBLE_R_TLV("Capture Volume", WM8962_LEFT_INPUT_VOLUME,
WM8962_RIGHT_INPUT_VOLUME, 0, 63, 0, inpga_tlv),
SOC_DOUBLE_R("Capture Switch", WM8962_LEFT_INPUT_VOLUME,
WM8962_RIGHT_INPUT_VOLUME, 7, 1, 1),
SOC_DOUBLE_R("Capture ZC Switch", WM8962_LEFT_INPUT_VOLUME,
WM8962_RIGHT_INPUT_VOLUME, 6, 1, 1),
SOC_DOUBLE_R_TLV("Sidetone Volume", WM8962_DAC_DSP_MIXING_1,
WM8962_DAC_DSP_MIXING_2, 4, 12, 0, st_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8962_LEFT_DAC_VOLUME,
WM8962_RIGHT_DAC_VOLUME, 1, 127, 0, digital_tlv),
SOC_SINGLE("DAC High Performance Switch", WM8962_ADC_DAC_CONTROL_2, 0, 1, 0),
SOC_SINGLE("ADC High Performance Switch", WM8962_ADDITIONAL_CONTROL_1,
5, 1, 0),
SOC_SINGLE_TLV("Beep Volume", WM8962_BEEP_GENERATOR_1, 4, 15, 0, beep_tlv),
SOC_DOUBLE_R_TLV("Headphone Volume", WM8962_HPOUTL_VOLUME,
WM8962_HPOUTR_VOLUME, 0, 127, 0, out_tlv),
SOC_DOUBLE_EXT("Headphone Switch", WM8962_PWR_MGMT_2, 1, 0, 1, 1,
snd_soc_get_volsw, wm8962_put_hp_sw),
SOC_DOUBLE_R("Headphone ZC Switch", WM8962_HPOUTL_VOLUME, WM8962_HPOUTR_VOLUME,
7, 1, 0),
SOC_DOUBLE_TLV("Headphone Aux Volume", WM8962_ANALOGUE_HP_2, 3, 6, 7, 0,
hp_tlv),
SOC_DOUBLE_R("Headphone Mixer Switch", WM8962_HEADPHONE_MIXER_3,
WM8962_HEADPHONE_MIXER_4, 8, 1, 1),
SOC_SINGLE_TLV("HPMIXL IN4L Volume", WM8962_HEADPHONE_MIXER_3,
3, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("HPMIXL IN4R Volume", WM8962_HEADPHONE_MIXER_3,
0, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("HPMIXL MIXINL Volume", WM8962_HEADPHONE_MIXER_3,
7, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("HPMIXL MIXINR Volume", WM8962_HEADPHONE_MIXER_3,
6, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("HPMIXR IN4L Volume", WM8962_HEADPHONE_MIXER_4,
3, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("HPMIXR IN4R Volume", WM8962_HEADPHONE_MIXER_4,
0, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("HPMIXR MIXINL Volume", WM8962_HEADPHONE_MIXER_4,
7, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("HPMIXR MIXINR Volume", WM8962_HEADPHONE_MIXER_4,
6, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("Speaker Boost Volume", WM8962_CLASS_D_CONTROL_2, 0, 7, 0,
classd_tlv),
};
static const struct snd_kcontrol_new wm8962_spk_mono_controls[] = {
SOC_SINGLE_TLV("Speaker Volume", WM8962_SPKOUTL_VOLUME, 0, 127, 0, out_tlv),
SOC_SINGLE_EXT("Speaker Switch", WM8962_CLASS_D_CONTROL_1, 1, 1, 1,
snd_soc_get_volsw, wm8962_put_spk_sw),
SOC_SINGLE("Speaker ZC Switch", WM8962_SPKOUTL_VOLUME, 7, 1, 0),
SOC_SINGLE("Speaker Mixer Switch", WM8962_SPEAKER_MIXER_3, 8, 1, 1),
SOC_SINGLE_TLV("Speaker Mixer IN4L Volume", WM8962_SPEAKER_MIXER_3,
3, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("Speaker Mixer IN4R Volume", WM8962_SPEAKER_MIXER_3,
0, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("Speaker Mixer MIXINL Volume", WM8962_SPEAKER_MIXER_3,
7, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("Speaker Mixer MIXINR Volume", WM8962_SPEAKER_MIXER_3,
6, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("Speaker Mixer DACL Volume", WM8962_SPEAKER_MIXER_5,
7, 1, 0, inmix_tlv),
SOC_SINGLE_TLV("Speaker Mixer DACR Volume", WM8962_SPEAKER_MIXER_5,
6, 1, 0, inmix_tlv),
};
static const struct snd_kcontrol_new wm8962_spk_stereo_controls[] = {
SOC_DOUBLE_R_TLV("Speaker Volume", WM8962_SPKOUTL_VOLUME,
WM8962_SPKOUTR_VOLUME, 0, 127, 0, out_tlv),
SOC_DOUBLE_EXT("Speaker Switch", WM8962_CLASS_D_CONTROL_1, 1, 0, 1, 1,
snd_soc_get_volsw, wm8962_put_spk_sw),
SOC_DOUBLE_R("Speaker ZC Switch", WM8962_SPKOUTL_VOLUME, WM8962_SPKOUTR_VOLUME,
7, 1, 0),
SOC_DOUBLE_R("Speaker Mixer Switch", WM8962_SPEAKER_MIXER_3,
WM8962_SPEAKER_MIXER_4, 8, 1, 1),
SOC_SINGLE_TLV("SPKOUTL Mixer IN4L Volume", WM8962_SPEAKER_MIXER_3,
3, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("SPKOUTL Mixer IN4R Volume", WM8962_SPEAKER_MIXER_3,
0, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("SPKOUTL Mixer MIXINL Volume", WM8962_SPEAKER_MIXER_3,
7, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("SPKOUTL Mixer MIXINR Volume", WM8962_SPEAKER_MIXER_3,
6, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("SPKOUTL Mixer DACL Volume", WM8962_SPEAKER_MIXER_5,
7, 1, 0, inmix_tlv),
SOC_SINGLE_TLV("SPKOUTL Mixer DACR Volume", WM8962_SPEAKER_MIXER_5,
6, 1, 0, inmix_tlv),
SOC_SINGLE_TLV("SPKOUTR Mixer IN4L Volume", WM8962_SPEAKER_MIXER_4,
3, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("SPKOUTR Mixer IN4R Volume", WM8962_SPEAKER_MIXER_4,
0, 7, 0, bypass_tlv),
SOC_SINGLE_TLV("SPKOUTR Mixer MIXINL Volume", WM8962_SPEAKER_MIXER_4,
7, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("SPKOUTR Mixer MIXINR Volume", WM8962_SPEAKER_MIXER_4,
6, 1, 1, inmix_tlv),
SOC_SINGLE_TLV("SPKOUTR Mixer DACL Volume", WM8962_SPEAKER_MIXER_5,
5, 1, 0, inmix_tlv),
SOC_SINGLE_TLV("SPKOUTR Mixer DACR Volume", WM8962_SPEAKER_MIXER_5,
4, 1, 0, inmix_tlv),
};
static int sysclk_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
int src;
int fll;
src = snd_soc_read(codec, WM8962_CLOCKING2) & WM8962_SYSCLK_SRC_MASK;
switch (src) {
case 0: /* MCLK */
fll = 0;
break;
case 0x200: /* FLL */
fll = 1;
break;
default:
dev_err(codec->dev, "Unknown SYSCLK source %x\n", src);
return -EINVAL;
}
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
if (fll)
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1,
WM8962_FLL_ENA, WM8962_FLL_ENA);
break;
case SND_SOC_DAPM_POST_PMD:
if (fll)
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1,
WM8962_FLL_ENA, 0);
break;
default:
BUG();
return -EINVAL;
}
return 0;
}
static int cp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
switch (event) {
case SND_SOC_DAPM_POST_PMU:
msleep(5);
break;
default:
BUG();
return -EINVAL;
}
return 0;
}
static int hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
int timeout;
int reg;
int expected = (WM8962_DCS_STARTUP_DONE_HP1L |
WM8962_DCS_STARTUP_DONE_HP1R);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0,
WM8962_HP1L_ENA | WM8962_HP1R_ENA,
WM8962_HP1L_ENA | WM8962_HP1R_ENA);
udelay(20);
snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0,
WM8962_HP1L_ENA_DLY | WM8962_HP1R_ENA_DLY,
WM8962_HP1L_ENA_DLY | WM8962_HP1R_ENA_DLY);
/* Start the DC servo */
snd_soc_update_bits(codec, WM8962_DC_SERVO_1,
WM8962_HP1L_DCS_ENA | WM8962_HP1R_DCS_ENA |
WM8962_HP1L_DCS_STARTUP |
WM8962_HP1R_DCS_STARTUP,
WM8962_HP1L_DCS_ENA | WM8962_HP1R_DCS_ENA |
WM8962_HP1L_DCS_STARTUP |
WM8962_HP1R_DCS_STARTUP);
/* Wait for it to complete, should be well under 100ms */
timeout = 0;
do {
msleep(1);
reg = snd_soc_read(codec, WM8962_DC_SERVO_6);
if (reg < 0) {
dev_err(codec->dev,
"Failed to read DCS status: %d\n",
reg);
continue;
}
dev_dbg(codec->dev, "DCS status: %x\n", reg);
} while (++timeout < 200 && (reg & expected) != expected);
if ((reg & expected) != expected)
dev_err(codec->dev, "DC servo timed out\n");
else
dev_dbg(codec->dev, "DC servo complete after %dms\n",
timeout);
snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0,
WM8962_HP1L_ENA_OUTP |
WM8962_HP1R_ENA_OUTP,
WM8962_HP1L_ENA_OUTP |
WM8962_HP1R_ENA_OUTP);
udelay(20);
snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0,
WM8962_HP1L_RMV_SHORT |
WM8962_HP1R_RMV_SHORT,
WM8962_HP1L_RMV_SHORT |
WM8962_HP1R_RMV_SHORT);
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0,
WM8962_HP1L_RMV_SHORT |
WM8962_HP1R_RMV_SHORT, 0);
udelay(20);
snd_soc_update_bits(codec, WM8962_DC_SERVO_1,
WM8962_HP1L_DCS_ENA | WM8962_HP1R_DCS_ENA |
WM8962_HP1L_DCS_STARTUP |
WM8962_HP1R_DCS_STARTUP,
0);
snd_soc_update_bits(codec, WM8962_ANALOGUE_HP_0,
WM8962_HP1L_ENA | WM8962_HP1R_ENA |
WM8962_HP1L_ENA_DLY | WM8962_HP1R_ENA_DLY |
WM8962_HP1L_ENA_OUTP |
WM8962_HP1R_ENA_OUTP, 0);
break;
default:
BUG();
return -EINVAL;
}
return 0;
}
/* VU bits for the output PGAs only take effect while the PGA is powered */
static int out_pga_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
u16 *reg_cache = wm8962->reg_cache;
int reg;
switch (w->shift) {
case WM8962_HPOUTR_PGA_ENA_SHIFT:
reg = WM8962_HPOUTR_VOLUME;
break;
case WM8962_HPOUTL_PGA_ENA_SHIFT:
reg = WM8962_HPOUTL_VOLUME;
break;
case WM8962_SPKOUTR_PGA_ENA_SHIFT:
reg = WM8962_SPKOUTR_VOLUME;
break;
case WM8962_SPKOUTL_PGA_ENA_SHIFT:
reg = WM8962_SPKOUTL_VOLUME;
break;
default:
BUG();
return -EINVAL;
}
switch (event) {
case SND_SOC_DAPM_POST_PMU:
return snd_soc_write(codec, reg, reg_cache[reg]);
default:
BUG();
return -EINVAL;
}
}
static const char *st_text[] = { "None", "Right", "Left" };
static const struct soc_enum str_enum =
SOC_ENUM_SINGLE(WM8962_DAC_DSP_MIXING_1, 2, 3, st_text);
static const struct snd_kcontrol_new str_mux =
SOC_DAPM_ENUM("Right Sidetone", str_enum);
static const struct soc_enum stl_enum =
SOC_ENUM_SINGLE(WM8962_DAC_DSP_MIXING_2, 2, 3, st_text);
static const struct snd_kcontrol_new stl_mux =
SOC_DAPM_ENUM("Left Sidetone", stl_enum);
static const char *outmux_text[] = { "DAC", "Mixer" };
static const struct soc_enum spkoutr_enum =
SOC_ENUM_SINGLE(WM8962_SPEAKER_MIXER_2, 7, 2, outmux_text);
static const struct snd_kcontrol_new spkoutr_mux =
SOC_DAPM_ENUM("SPKOUTR Mux", spkoutr_enum);
static const struct soc_enum spkoutl_enum =
SOC_ENUM_SINGLE(WM8962_SPEAKER_MIXER_1, 7, 2, outmux_text);
static const struct snd_kcontrol_new spkoutl_mux =
SOC_DAPM_ENUM("SPKOUTL Mux", spkoutl_enum);
static const struct soc_enum hpoutr_enum =
SOC_ENUM_SINGLE(WM8962_HEADPHONE_MIXER_2, 7, 2, outmux_text);
static const struct snd_kcontrol_new hpoutr_mux =
SOC_DAPM_ENUM("HPOUTR Mux", hpoutr_enum);
static const struct soc_enum hpoutl_enum =
SOC_ENUM_SINGLE(WM8962_HEADPHONE_MIXER_1, 7, 2, outmux_text);
static const struct snd_kcontrol_new hpoutl_mux =
SOC_DAPM_ENUM("HPOUTL Mux", hpoutl_enum);
static const struct snd_kcontrol_new inpgal[] = {
SOC_DAPM_SINGLE("IN1L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 3, 1, 0),
SOC_DAPM_SINGLE("IN2L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 2, 1, 0),
SOC_DAPM_SINGLE("IN3L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 1, 1, 0),
SOC_DAPM_SINGLE("IN4L Switch", WM8962_LEFT_INPUT_PGA_CONTROL, 0, 1, 0),
};
static const struct snd_kcontrol_new inpgar[] = {
SOC_DAPM_SINGLE("IN1R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 3, 1, 0),
SOC_DAPM_SINGLE("IN2R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 2, 1, 0),
SOC_DAPM_SINGLE("IN3R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 1, 1, 0),
SOC_DAPM_SINGLE("IN4R Switch", WM8962_RIGHT_INPUT_PGA_CONTROL, 0, 1, 0),
};
static const struct snd_kcontrol_new mixinl[] = {
SOC_DAPM_SINGLE("IN2L Switch", WM8962_INPUT_MIXER_CONTROL_2, 5, 1, 0),
SOC_DAPM_SINGLE("IN3L Switch", WM8962_INPUT_MIXER_CONTROL_2, 4, 1, 0),
SOC_DAPM_SINGLE("PGA Switch", WM8962_INPUT_MIXER_CONTROL_2, 3, 1, 0),
};
static const struct snd_kcontrol_new mixinr[] = {
SOC_DAPM_SINGLE("IN2R Switch", WM8962_INPUT_MIXER_CONTROL_2, 2, 1, 0),
SOC_DAPM_SINGLE("IN3R Switch", WM8962_INPUT_MIXER_CONTROL_2, 1, 1, 0),
SOC_DAPM_SINGLE("PGA Switch", WM8962_INPUT_MIXER_CONTROL_2, 0, 1, 0),
};
static const struct snd_kcontrol_new hpmixl[] = {
SOC_DAPM_SINGLE("DACL Switch", WM8962_HEADPHONE_MIXER_1, 5, 1, 0),
SOC_DAPM_SINGLE("DACR Switch", WM8962_HEADPHONE_MIXER_1, 4, 1, 0),
SOC_DAPM_SINGLE("MIXINL Switch", WM8962_HEADPHONE_MIXER_1, 3, 1, 0),
SOC_DAPM_SINGLE("MIXINR Switch", WM8962_HEADPHONE_MIXER_1, 2, 1, 0),
SOC_DAPM_SINGLE("IN4L Switch", WM8962_HEADPHONE_MIXER_1, 1, 1, 0),
SOC_DAPM_SINGLE("IN4R Switch", WM8962_HEADPHONE_MIXER_1, 0, 1, 0),
};
static const struct snd_kcontrol_new hpmixr[] = {
SOC_DAPM_SINGLE("DACL Switch", WM8962_HEADPHONE_MIXER_2, 5, 1, 0),
SOC_DAPM_SINGLE("DACR Switch", WM8962_HEADPHONE_MIXER_2, 4, 1, 0),
SOC_DAPM_SINGLE("MIXINL Switch", WM8962_HEADPHONE_MIXER_2, 3, 1, 0),
SOC_DAPM_SINGLE("MIXINR Switch", WM8962_HEADPHONE_MIXER_2, 2, 1, 0),
SOC_DAPM_SINGLE("IN4L Switch", WM8962_HEADPHONE_MIXER_2, 1, 1, 0),
SOC_DAPM_SINGLE("IN4R Switch", WM8962_HEADPHONE_MIXER_2, 0, 1, 0),
};
static const struct snd_kcontrol_new spkmixl[] = {
SOC_DAPM_SINGLE("DACL Switch", WM8962_SPEAKER_MIXER_1, 5, 1, 0),
SOC_DAPM_SINGLE("DACR Switch", WM8962_SPEAKER_MIXER_1, 4, 1, 0),
SOC_DAPM_SINGLE("MIXINL Switch", WM8962_SPEAKER_MIXER_1, 3, 1, 0),
SOC_DAPM_SINGLE("MIXINR Switch", WM8962_SPEAKER_MIXER_1, 2, 1, 0),
SOC_DAPM_SINGLE("IN4L Switch", WM8962_SPEAKER_MIXER_1, 1, 1, 0),
SOC_DAPM_SINGLE("IN4R Switch", WM8962_SPEAKER_MIXER_1, 0, 1, 0),
};
static const struct snd_kcontrol_new spkmixr[] = {
SOC_DAPM_SINGLE("DACL Switch", WM8962_SPEAKER_MIXER_2, 5, 1, 0),
SOC_DAPM_SINGLE("DACR Switch", WM8962_SPEAKER_MIXER_2, 4, 1, 0),
SOC_DAPM_SINGLE("MIXINL Switch", WM8962_SPEAKER_MIXER_2, 3, 1, 0),
SOC_DAPM_SINGLE("MIXINR Switch", WM8962_SPEAKER_MIXER_2, 2, 1, 0),
SOC_DAPM_SINGLE("IN4L Switch", WM8962_SPEAKER_MIXER_2, 1, 1, 0),
SOC_DAPM_SINGLE("IN4R Switch", WM8962_SPEAKER_MIXER_2, 0, 1, 0),
};
static const struct snd_soc_dapm_widget wm8962_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("IN1L"),
SND_SOC_DAPM_INPUT("IN1R"),
SND_SOC_DAPM_INPUT("IN2L"),
SND_SOC_DAPM_INPUT("IN2R"),
SND_SOC_DAPM_INPUT("IN3L"),
SND_SOC_DAPM_INPUT("IN3R"),
SND_SOC_DAPM_INPUT("IN4L"),
SND_SOC_DAPM_INPUT("IN4R"),
SND_SOC_DAPM_INPUT("Beep"),
SND_SOC_DAPM_SUPPLY("Class G", WM8962_CHARGE_PUMP_B, 0, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("SYSCLK", WM8962_CLOCKING2, 5, 0, sysclk_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("Charge Pump", WM8962_CHARGE_PUMP_1, 0, 0, cp_event,
SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_SUPPLY("TOCLK", WM8962_ADDITIONAL_CONTROL_1, 0, 0, NULL, 0),
SND_SOC_DAPM_MIXER("INPGAL", WM8962_LEFT_INPUT_PGA_CONTROL, 4, 0,
inpgal, ARRAY_SIZE(inpgal)),
SND_SOC_DAPM_MIXER("INPGAR", WM8962_RIGHT_INPUT_PGA_CONTROL, 4, 0,
inpgar, ARRAY_SIZE(inpgar)),
SND_SOC_DAPM_MIXER("MIXINL", WM8962_PWR_MGMT_1, 5, 0,
mixinl, ARRAY_SIZE(mixinl)),
SND_SOC_DAPM_MIXER("MIXINR", WM8962_PWR_MGMT_1, 4, 0,
mixinr, ARRAY_SIZE(mixinr)),
SND_SOC_DAPM_ADC("ADCL", "Capture", WM8962_PWR_MGMT_1, 3, 0),
SND_SOC_DAPM_ADC("ADCR", "Capture", WM8962_PWR_MGMT_1, 2, 0),
SND_SOC_DAPM_MUX("STL", SND_SOC_NOPM, 0, 0, &stl_mux),
SND_SOC_DAPM_MUX("STR", SND_SOC_NOPM, 0, 0, &str_mux),
SND_SOC_DAPM_DAC("DACL", "Playback", WM8962_PWR_MGMT_2, 8, 0),
SND_SOC_DAPM_DAC("DACR", "Playback", WM8962_PWR_MGMT_2, 7, 0),
SND_SOC_DAPM_PGA("Left Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Bypass", SND_SOC_NOPM, 0, 0, NULL, 0),
SND_SOC_DAPM_MIXER("HPMIXL", WM8962_MIXER_ENABLES, 3, 0,
hpmixl, ARRAY_SIZE(hpmixl)),
SND_SOC_DAPM_MIXER("HPMIXR", WM8962_MIXER_ENABLES, 2, 0,
hpmixr, ARRAY_SIZE(hpmixr)),
SND_SOC_DAPM_MUX_E("HPOUTL PGA", WM8962_PWR_MGMT_2, 6, 0, &hpoutl_mux,
out_pga_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_MUX_E("HPOUTR PGA", WM8962_PWR_MGMT_2, 5, 0, &hpoutr_mux,
out_pga_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_PGA_E("HPOUT", SND_SOC_NOPM, 0, 0, NULL, 0, hp_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_OUTPUT("HPOUTL"),
SND_SOC_DAPM_OUTPUT("HPOUTR"),
};
static const struct snd_soc_dapm_widget wm8962_dapm_spk_mono_widgets[] = {
SND_SOC_DAPM_MIXER("Speaker Mixer", WM8962_MIXER_ENABLES, 1, 0,
spkmixl, ARRAY_SIZE(spkmixl)),
SND_SOC_DAPM_MUX_E("Speaker PGA", WM8962_PWR_MGMT_2, 4, 0, &spkoutl_mux,
out_pga_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_PGA("Speaker Output", WM8962_CLASS_D_CONTROL_1, 7, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("SPKOUT"),
};
static const struct snd_soc_dapm_widget wm8962_dapm_spk_stereo_widgets[] = {
SND_SOC_DAPM_MIXER("SPKOUTL Mixer", WM8962_MIXER_ENABLES, 1, 0,
spkmixl, ARRAY_SIZE(spkmixl)),
SND_SOC_DAPM_MIXER("SPKOUTR Mixer", WM8962_MIXER_ENABLES, 0, 0,
spkmixr, ARRAY_SIZE(spkmixr)),
SND_SOC_DAPM_MUX_E("SPKOUTL PGA", WM8962_PWR_MGMT_2, 4, 0, &spkoutl_mux,
out_pga_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_MUX_E("SPKOUTR PGA", WM8962_PWR_MGMT_2, 3, 0, &spkoutr_mux,
out_pga_event, SND_SOC_DAPM_POST_PMU),
SND_SOC_DAPM_PGA("SPKOUTR Output", WM8962_CLASS_D_CONTROL_1, 7, 0, NULL, 0),
SND_SOC_DAPM_PGA("SPKOUTL Output", WM8962_CLASS_D_CONTROL_1, 6, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("SPKOUTL"),
SND_SOC_DAPM_OUTPUT("SPKOUTR"),
};
static const struct snd_soc_dapm_route wm8962_intercon[] = {
{ "INPGAL", "IN1L Switch", "IN1L" },
{ "INPGAL", "IN2L Switch", "IN2L" },
{ "INPGAL", "IN3L Switch", "IN3L" },
{ "INPGAL", "IN4L Switch", "IN4L" },
{ "INPGAR", "IN1R Switch", "IN1R" },
{ "INPGAR", "IN2R Switch", "IN2R" },
{ "INPGAR", "IN3R Switch", "IN3R" },
{ "INPGAR", "IN4R Switch", "IN4R" },
{ "MIXINL", "IN2L Switch", "IN2L" },
{ "MIXINL", "IN3L Switch", "IN3L" },
{ "MIXINL", "PGA Switch", "INPGAL" },
{ "MIXINR", "IN2R Switch", "IN2R" },
{ "MIXINR", "IN3R Switch", "IN3R" },
{ "MIXINR", "PGA Switch", "INPGAR" },
{ "ADCL", NULL, "SYSCLK" },
{ "ADCL", NULL, "TOCLK" },
{ "ADCL", NULL, "MIXINL" },
{ "ADCR", NULL, "SYSCLK" },
{ "ADCR", NULL, "TOCLK" },
{ "ADCR", NULL, "MIXINR" },
{ "STL", "Left", "ADCL" },
{ "STL", "Right", "ADCR" },
{ "STR", "Left", "ADCL" },
{ "STR", "Right", "ADCR" },
{ "DACL", NULL, "SYSCLK" },
{ "DACL", NULL, "TOCLK" },
{ "DACL", NULL, "Beep" },
{ "DACL", NULL, "STL" },
{ "DACR", NULL, "SYSCLK" },
{ "DACR", NULL, "TOCLK" },
{ "DACR", NULL, "Beep" },
{ "DACR", NULL, "STR" },
{ "HPMIXL", "IN4L Switch", "IN4L" },
{ "HPMIXL", "IN4R Switch", "IN4R" },
{ "HPMIXL", "DACL Switch", "DACL" },
{ "HPMIXL", "DACR Switch", "DACR" },
{ "HPMIXL", "MIXINL Switch", "MIXINL" },
{ "HPMIXL", "MIXINR Switch", "MIXINR" },
{ "HPMIXR", "IN4L Switch", "IN4L" },
{ "HPMIXR", "IN4R Switch", "IN4R" },
{ "HPMIXR", "DACL Switch", "DACL" },
{ "HPMIXR", "DACR Switch", "DACR" },
{ "HPMIXR", "MIXINL Switch", "MIXINL" },
{ "HPMIXR", "MIXINR Switch", "MIXINR" },
{ "Left Bypass", NULL, "HPMIXL" },
{ "Left Bypass", NULL, "Class G" },
{ "Right Bypass", NULL, "HPMIXR" },
{ "Right Bypass", NULL, "Class G" },
{ "HPOUTL PGA", "Mixer", "Left Bypass" },
{ "HPOUTL PGA", "DAC", "DACL" },
{ "HPOUTR PGA", "Mixer", "Right Bypass" },
{ "HPOUTR PGA", "DAC", "DACR" },
{ "HPOUT", NULL, "HPOUTL PGA" },
{ "HPOUT", NULL, "HPOUTR PGA" },
{ "HPOUT", NULL, "Charge Pump" },
{ "HPOUT", NULL, "SYSCLK" },
{ "HPOUT", NULL, "TOCLK" },
{ "HPOUTL", NULL, "HPOUT" },
{ "HPOUTR", NULL, "HPOUT" },
};
static const struct snd_soc_dapm_route wm8962_spk_mono_intercon[] = {
{ "Speaker Mixer", "IN4L Switch", "IN4L" },
{ "Speaker Mixer", "IN4R Switch", "IN4R" },
{ "Speaker Mixer", "DACL Switch", "DACL" },
{ "Speaker Mixer", "DACR Switch", "DACR" },
{ "Speaker Mixer", "MIXINL Switch", "MIXINL" },
{ "Speaker Mixer", "MIXINR Switch", "MIXINR" },
{ "Speaker PGA", "Mixer", "Speaker Mixer" },
{ "Speaker PGA", "DAC", "DACL" },
{ "Speaker Output", NULL, "Speaker PGA" },
{ "Speaker Output", NULL, "SYSCLK" },
{ "Speaker Output", NULL, "TOCLK" },
{ "SPKOUT", NULL, "Speaker Output" },
};
static const struct snd_soc_dapm_route wm8962_spk_stereo_intercon[] = {
{ "SPKOUTL Mixer", "IN4L Switch", "IN4L" },
{ "SPKOUTL Mixer", "IN4R Switch", "IN4R" },
{ "SPKOUTL Mixer", "DACL Switch", "DACL" },
{ "SPKOUTL Mixer", "DACR Switch", "DACR" },
{ "SPKOUTL Mixer", "MIXINL Switch", "MIXINL" },
{ "SPKOUTL Mixer", "MIXINR Switch", "MIXINR" },
{ "SPKOUTR Mixer", "IN4L Switch", "IN4L" },
{ "SPKOUTR Mixer", "IN4R Switch", "IN4R" },
{ "SPKOUTR Mixer", "DACL Switch", "DACL" },
{ "SPKOUTR Mixer", "DACR Switch", "DACR" },
{ "SPKOUTR Mixer", "MIXINL Switch", "MIXINL" },
{ "SPKOUTR Mixer", "MIXINR Switch", "MIXINR" },
{ "SPKOUTL PGA", "Mixer", "SPKOUTL Mixer" },
{ "SPKOUTL PGA", "DAC", "DACL" },
{ "SPKOUTR PGA", "Mixer", "SPKOUTR Mixer" },
{ "SPKOUTR PGA", "DAC", "DACR" },
{ "SPKOUTL Output", NULL, "SPKOUTL PGA" },
{ "SPKOUTL Output", NULL, "SYSCLK" },
{ "SPKOUTL Output", NULL, "TOCLK" },
{ "SPKOUTR Output", NULL, "SPKOUTR PGA" },
{ "SPKOUTR Output", NULL, "SYSCLK" },
{ "SPKOUTR Output", NULL, "TOCLK" },
{ "SPKOUTL", NULL, "SPKOUTL Output" },
{ "SPKOUTR", NULL, "SPKOUTR Output" },
};
static int wm8962_add_widgets(struct snd_soc_codec *codec)
{
struct wm8962_pdata *pdata = dev_get_platdata(codec->dev);
snd_soc_add_controls(codec, wm8962_snd_controls,
ARRAY_SIZE(wm8962_snd_controls));
if (pdata && pdata->spk_mono)
snd_soc_add_controls(codec, wm8962_spk_mono_controls,
ARRAY_SIZE(wm8962_spk_mono_controls));
else
snd_soc_add_controls(codec, wm8962_spk_stereo_controls,
ARRAY_SIZE(wm8962_spk_stereo_controls));
snd_soc_dapm_new_controls(codec, wm8962_dapm_widgets,
ARRAY_SIZE(wm8962_dapm_widgets));
if (pdata && pdata->spk_mono)
snd_soc_dapm_new_controls(codec, wm8962_dapm_spk_mono_widgets,
ARRAY_SIZE(wm8962_dapm_spk_mono_widgets));
else
snd_soc_dapm_new_controls(codec, wm8962_dapm_spk_stereo_widgets,
ARRAY_SIZE(wm8962_dapm_spk_stereo_widgets));
snd_soc_dapm_add_routes(codec, wm8962_intercon,
ARRAY_SIZE(wm8962_intercon));
if (pdata && pdata->spk_mono)
snd_soc_dapm_add_routes(codec, wm8962_spk_mono_intercon,
ARRAY_SIZE(wm8962_spk_mono_intercon));
else
snd_soc_dapm_add_routes(codec, wm8962_spk_stereo_intercon,
ARRAY_SIZE(wm8962_spk_stereo_intercon));
snd_soc_dapm_disable_pin(codec, "Beep");
return 0;
}
static void wm8962_sync_cache(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int i;
if (!codec->cache_sync)
return;
dev_dbg(codec->dev, "Syncing cache\n");
codec->cache_only = 0;
/* Sync back cached values if they're different from the
* hardware default.
*/
for (i = 1; i < ARRAY_SIZE(wm8962->reg_cache); i++) {
if (i == WM8962_SOFTWARE_RESET)
continue;
if (wm8962->reg_cache[i] == wm8962_reg[i])
continue;
snd_soc_write(codec, i, wm8962->reg_cache[i]);
}
codec->cache_sync = 0;
}
/* -1 for reserved values */
static const int bclk_divs[] = {
1, -1, 2, 3, 4, -1, 6, 8, -1, 12, 16, 24, -1, 32, 32, 32
};
static void wm8962_configure_bclk(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int dspclk, i;
int clocking2 = 0;
int aif2 = 0;
/* If the CODEC is powered on we can configure BCLK */
if (codec->bias_level != SND_SOC_BIAS_OFF) {
dev_dbg(codec->dev, "Bias is off, can't configure BCLK\n");
return;
}
if (!wm8962->bclk) {
dev_dbg(codec->dev, "No BCLK rate configured\n");
return;
}
dspclk = snd_soc_read(codec, WM8962_CLOCKING1);
if (dspclk < 0) {
dev_err(codec->dev, "Failed to read DSPCLK: %d\n", dspclk);
return;
}
dspclk = (dspclk & WM8962_DSPCLK_DIV_MASK) >> WM8962_DSPCLK_DIV_SHIFT;
switch (dspclk) {
case 0:
dspclk = wm8962->sysclk_rate;
break;
case 1:
dspclk = wm8962->sysclk_rate / 2;
break;
case 2:
dspclk = wm8962->sysclk_rate / 4;
break;
default:
dev_warn(codec->dev, "Unknown DSPCLK divisor read back\n");
dspclk = wm8962->sysclk;
}
dev_dbg(codec->dev, "DSPCLK is %dHz, BCLK %d\n", dspclk, wm8962->bclk);
/* We're expecting an exact match */
for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
if (bclk_divs[i] < 0)
continue;
if (dspclk / bclk_divs[i] == wm8962->bclk) {
dev_dbg(codec->dev, "Selected BCLK_DIV %d for %dHz\n",
bclk_divs[i], wm8962->bclk);
clocking2 |= i;
break;
}
}
if (i == ARRAY_SIZE(bclk_divs)) {
dev_err(codec->dev, "Unsupported BCLK ratio %d\n",
dspclk / wm8962->bclk);
return;
}
aif2 |= wm8962->bclk / wm8962->lrclk;
dev_dbg(codec->dev, "Selected LRCLK divisor %d for %dHz\n",
wm8962->bclk / wm8962->lrclk, wm8962->lrclk);
snd_soc_update_bits(codec, WM8962_CLOCKING2,
WM8962_BCLK_DIV_MASK, clocking2);
snd_soc_update_bits(codec, WM8962_AUDIO_INTERFACE_2,
WM8962_AIF_RATE_MASK, aif2);
}
static int wm8962_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int ret;
if (level == codec->bias_level)
return 0;
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
/* VMID 2*50k */
snd_soc_update_bits(codec, WM8962_PWR_MGMT_1,
WM8962_VMID_SEL_MASK, 0x80);
break;
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(wm8962->supplies),
wm8962->supplies);
if (ret != 0) {
dev_err(codec->dev,
"Failed to enable supplies: %d\n",
ret);
return ret;
}
wm8962_sync_cache(codec);
snd_soc_update_bits(codec, WM8962_ANTI_POP,
WM8962_STARTUP_BIAS_ENA |
WM8962_VMID_BUF_ENA,
WM8962_STARTUP_BIAS_ENA |
WM8962_VMID_BUF_ENA);
/* Bias enable at 2*50k for ramp */
snd_soc_update_bits(codec, WM8962_PWR_MGMT_1,
WM8962_VMID_SEL_MASK |
WM8962_BIAS_ENA,
WM8962_BIAS_ENA | 0x180);
msleep(5);
snd_soc_update_bits(codec, WM8962_CLOCKING2,
WM8962_CLKREG_OVD,
WM8962_CLKREG_OVD);
wm8962_configure_bclk(codec);
}
/* VMID 2*250k */
snd_soc_update_bits(codec, WM8962_PWR_MGMT_1,
WM8962_VMID_SEL_MASK, 0x100);
break;
case SND_SOC_BIAS_OFF:
snd_soc_update_bits(codec, WM8962_PWR_MGMT_1,
WM8962_VMID_SEL_MASK | WM8962_BIAS_ENA, 0);
snd_soc_update_bits(codec, WM8962_ANTI_POP,
WM8962_STARTUP_BIAS_ENA |
WM8962_VMID_BUF_ENA, 0);
regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies),
wm8962->supplies);
break;
}
codec->bias_level = level;
return 0;
}
static const struct {
int rate;
int reg;
} sr_vals[] = {
{ 48000, 0 },
{ 44100, 0 },
{ 32000, 1 },
{ 22050, 2 },
{ 24000, 2 },
{ 16000, 3 },
{ 11025, 4 },
{ 12000, 4 },
{ 8000, 5 },
{ 88200, 6 },
{ 96000, 6 },
};
static const int sysclk_rates[] = {
64, 128, 192, 256, 384, 512, 768, 1024, 1408, 1536,
};
static int wm8962_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->codec;
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int rate = params_rate(params);
int i;
int aif0 = 0;
int adctl3 = 0;
int clocking4 = 0;
wm8962->bclk = snd_soc_params_to_bclk(params);
wm8962->lrclk = params_rate(params);
for (i = 0; i < ARRAY_SIZE(sr_vals); i++) {
if (sr_vals[i].rate == rate) {
adctl3 |= sr_vals[i].reg;
break;
}
}
if (i == ARRAY_SIZE(sr_vals)) {
dev_err(codec->dev, "Unsupported rate %dHz\n", rate);
return -EINVAL;
}
if (rate % 8000 == 0)
adctl3 |= WM8962_SAMPLE_RATE_INT_MODE;
for (i = 0; i < ARRAY_SIZE(sysclk_rates); i++) {
if (sysclk_rates[i] == wm8962->sysclk_rate / rate) {
clocking4 |= i << WM8962_SYSCLK_RATE_SHIFT;
break;
}
}
if (i == ARRAY_SIZE(sysclk_rates)) {
dev_err(codec->dev, "Unsupported sysclk ratio %d\n",
wm8962->sysclk_rate / rate);
return -EINVAL;
}
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
aif0 |= 0x40;
break;
case SNDRV_PCM_FORMAT_S24_LE:
aif0 |= 0x80;
break;
case SNDRV_PCM_FORMAT_S32_LE:
aif0 |= 0xc0;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, WM8962_AUDIO_INTERFACE_0,
WM8962_WL_MASK, aif0);
snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_3,
WM8962_SAMPLE_RATE_INT_MODE |
WM8962_SAMPLE_RATE_MASK, adctl3);
snd_soc_update_bits(codec, WM8962_CLOCKING_4,
WM8962_SYSCLK_RATE_MASK, clocking4);
wm8962_configure_bclk(codec);
return 0;
}
static int wm8962_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int src;
switch (clk_id) {
case WM8962_SYSCLK_MCLK:
wm8962->sysclk = WM8962_SYSCLK_MCLK;
src = 0;
break;
case WM8962_SYSCLK_FLL:
wm8962->sysclk = WM8962_SYSCLK_FLL;
src = 1 << WM8962_SYSCLK_SRC_SHIFT;
WARN_ON(freq != wm8962->fll_fout);
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, WM8962_CLOCKING2, WM8962_SYSCLK_SRC_MASK,
src);
wm8962->sysclk_rate = freq;
return 0;
}
static int wm8962_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec = dai->codec;
int aif0 = 0;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
aif0 |= WM8962_LRCLK_INV;
case SND_SOC_DAIFMT_DSP_B:
aif0 |= 3;
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
case SND_SOC_DAIFMT_IB_NF:
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
aif0 |= 1;
break;
case SND_SOC_DAIFMT_I2S:
aif0 |= 2;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_NF:
aif0 |= WM8962_BCLK_INV;
break;
case SND_SOC_DAIFMT_NB_IF:
aif0 |= WM8962_LRCLK_INV;
break;
case SND_SOC_DAIFMT_IB_IF:
aif0 |= WM8962_BCLK_INV | WM8962_LRCLK_INV;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
aif0 |= WM8962_MSTR;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, WM8962_AUDIO_INTERFACE_0,
WM8962_FMT_MASK | WM8962_BCLK_INV | WM8962_MSTR |
WM8962_LRCLK_INV, aif0);
return 0;
}
struct _fll_div {
u16 fll_fratio;
u16 fll_outdiv;
u16 fll_refclk_div;
u16 n;
u16 theta;
u16 lambda;
};
/* The size in bits of the FLL divide multiplied by 10
* to allow rounding later */
#define FIXED_FLL_SIZE ((1 << 16) * 10)
static struct {
unsigned int min;
unsigned int max;
u16 fll_fratio;
int ratio;
} fll_fratios[] = {
{ 0, 64000, 4, 16 },
{ 64000, 128000, 3, 8 },
{ 128000, 256000, 2, 4 },
{ 256000, 1000000, 1, 2 },
{ 1000000, 13500000, 0, 1 },
};
static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
unsigned int Fout)
{
unsigned int target;
unsigned int div;
unsigned int fratio, gcd_fll;
int i;
/* Fref must be <=13.5MHz */
div = 1;
fll_div->fll_refclk_div = 0;
while ((Fref / div) > 13500000) {
div *= 2;
fll_div->fll_refclk_div++;
if (div > 4) {
pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
Fref);
return -EINVAL;
}
}
pr_debug("FLL Fref=%u Fout=%u\n", Fref, Fout);
/* Apply the division for our remaining calculations */
Fref /= div;
/* Fvco should be 90-100MHz; don't check the upper bound */
div = 2;
while (Fout * div < 90000000) {
div++;
if (div > 64) {
pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
Fout);
return -EINVAL;
}
}
target = Fout * div;
fll_div->fll_outdiv = div - 1;
pr_debug("FLL Fvco=%dHz\n", target);
/* Find an appropraite FLL_FRATIO and factor it out of the target */
for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
fll_div->fll_fratio = fll_fratios[i].fll_fratio;
fratio = fll_fratios[i].ratio;
break;
}
}
if (i == ARRAY_SIZE(fll_fratios)) {
pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
return -EINVAL;
}
fll_div->n = target / (fratio * Fref);
if (target % Fref == 0) {
fll_div->theta = 0;
fll_div->lambda = 0;
} else {
gcd_fll = gcd(target, fratio * Fref);
fll_div->theta = (target - (fll_div->n * fratio * Fref))
/ gcd_fll;
fll_div->lambda = (fratio * Fref) / gcd_fll;
}
pr_debug("FLL N=%x THETA=%x LAMBDA=%x\n",
fll_div->n, fll_div->theta, fll_div->lambda);
pr_debug("FLL_FRATIO=%x FLL_OUTDIV=%x FLL_REFCLK_DIV=%x\n",
fll_div->fll_fratio, fll_div->fll_outdiv,
fll_div->fll_refclk_div);
return 0;
}
static int wm8962_set_fll(struct snd_soc_dai *dai, int fll_id, int source,
unsigned int Fref, unsigned int Fout)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
struct _fll_div fll_div;
int ret;
int fll1 = snd_soc_read(codec, WM8962_FLL_CONTROL_1);
/* Any change? */
if (source == wm8962->fll_src && Fref == wm8962->fll_fref &&
Fout == wm8962->fll_fout)
return 0;
if (Fout == 0) {
dev_dbg(codec->dev, "FLL disabled\n");
wm8962->fll_fref = 0;
wm8962->fll_fout = 0;
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1,
WM8962_FLL_ENA, 0);
return 0;
}
ret = fll_factors(&fll_div, Fref, Fout);
if (ret != 0)
return ret;
switch (fll_id) {
case WM8962_FLL_MCLK:
case WM8962_FLL_BCLK:
case WM8962_FLL_OSC:
fll1 |= (fll_id - 1) << WM8962_FLL_REFCLK_SRC_SHIFT;
break;
case WM8962_FLL_INT:
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1,
WM8962_FLL_OSC_ENA, WM8962_FLL_OSC_ENA);
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_5,
WM8962_FLL_FRC_NCO, WM8962_FLL_FRC_NCO);
break;
default:
dev_err(codec->dev, "Unknown FLL source %d\n", ret);
return -EINVAL;
}
if (fll_div.theta || fll_div.lambda)
fll1 |= WM8962_FLL_FRAC;
/* Stop the FLL while we reconfigure */
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1, WM8962_FLL_ENA, 0);
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_2,
WM8962_FLL_OUTDIV_MASK |
WM8962_FLL_REFCLK_DIV_MASK,
(fll_div.fll_outdiv << WM8962_FLL_OUTDIV_SHIFT) |
(fll_div.fll_refclk_div));
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_3,
WM8962_FLL_FRATIO_MASK, fll_div.fll_fratio);
snd_soc_write(codec, WM8962_FLL_CONTROL_6, fll_div.theta);
snd_soc_write(codec, WM8962_FLL_CONTROL_7, fll_div.lambda);
snd_soc_write(codec, WM8962_FLL_CONTROL_8, fll_div.n);
snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1,
WM8962_FLL_FRAC | WM8962_FLL_REFCLK_SRC_MASK |
WM8962_FLL_ENA, fll1);
dev_dbg(codec->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout);
wm8962->fll_fref = Fref;
wm8962->fll_fout = Fout;
wm8962->fll_src = source;
return 0;
}
static int wm8962_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
int val;
if (mute)
val = WM8962_DAC_MUTE;
else
val = 0;
return snd_soc_update_bits(codec, WM8962_ADC_DAC_CONTROL_1,
WM8962_DAC_MUTE, val);
}
#define WM8962_RATES SNDRV_PCM_RATE_8000_96000
#define WM8962_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_ops wm8962_dai_ops = {
.hw_params = wm8962_hw_params,
.set_sysclk = wm8962_set_dai_sysclk,
.set_fmt = wm8962_set_dai_fmt,
.set_pll = wm8962_set_fll,
.digital_mute = wm8962_mute,
};
static struct snd_soc_dai_driver wm8962_dai = {
.name = "wm8962",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = WM8962_RATES,
.formats = WM8962_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = WM8962_RATES,
.formats = WM8962_FORMATS,
},
.ops = &wm8962_dai_ops,
.symmetric_rates = 1,
};
#ifdef CONFIG_PM
static int wm8962_resume(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
u16 *reg_cache = codec->reg_cache;
int i;
/* Restore the registers */
for (i = 1; i < ARRAY_SIZE(wm8962->reg_cache); i++) {
switch (i) {
case WM8962_SOFTWARE_RESET:
continue;
default:
break;
}
if (reg_cache[i] != wm8962_reg[i])
snd_soc_write(codec, i, reg_cache[i]);
}
return 0;
}
#else
#define wm8962_resume NULL
#endif
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
static int beep_rates[] = {
500, 1000, 2000, 4000,
};
static void wm8962_beep_work(struct work_struct *work)
{
struct wm8962_priv *wm8962 =
container_of(work, struct wm8962_priv, beep_work);
struct snd_soc_codec *codec = wm8962->codec;
int i;
int reg = 0;
int best = 0;
if (wm8962->beep_rate) {
for (i = 0; i < ARRAY_SIZE(beep_rates); i++) {
if (abs(wm8962->beep_rate - beep_rates[i]) <
abs(wm8962->beep_rate - beep_rates[best]))
best = i;
}
dev_dbg(codec->dev, "Set beep rate %dHz for requested %dHz\n",
beep_rates[best], wm8962->beep_rate);
reg = WM8962_BEEP_ENA | (best << WM8962_BEEP_RATE_SHIFT);
snd_soc_dapm_enable_pin(codec, "Beep");
} else {
dev_dbg(codec->dev, "Disabling beep\n");
snd_soc_dapm_disable_pin(codec, "Beep");
}
snd_soc_update_bits(codec, WM8962_BEEP_GENERATOR_1,
WM8962_BEEP_ENA | WM8962_BEEP_RATE_MASK, reg);
snd_soc_dapm_sync(codec);
}
/* For usability define a way of injecting beep events for the device -
* many systems will not have a keyboard.
*/
static int wm8962_beep_event(struct input_dev *dev, unsigned int type,
unsigned int code, int hz)
{
struct snd_soc_codec *codec = input_get_drvdata(dev);
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
dev_dbg(codec->dev, "Beep event %x %x\n", code, hz);
switch (code) {
case SND_BELL:
if (hz)
hz = 1000;
case SND_TONE:
break;
default:
return -1;
}
/* Kick the beep from a workqueue */
wm8962->beep_rate = hz;
schedule_work(&wm8962->beep_work);
return 0;
}
static ssize_t wm8962_beep_set(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct wm8962_priv *wm8962 = dev_get_drvdata(dev);
long int time;
strict_strtol(buf, 10, &time);
input_event(wm8962->beep, EV_SND, SND_TONE, time);
return count;
}
static DEVICE_ATTR(beep, 0200, NULL, wm8962_beep_set);
static void wm8962_init_beep(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int ret;
wm8962->beep = input_allocate_device();
if (!wm8962->beep) {
dev_err(codec->dev, "Failed to allocate beep device\n");
return;
}
INIT_WORK(&wm8962->beep_work, wm8962_beep_work);
wm8962->beep_rate = 0;
wm8962->beep->name = "WM8962 Beep Generator";
wm8962->beep->phys = dev_name(codec->dev);
wm8962->beep->id.bustype = BUS_I2C;
wm8962->beep->evbit[0] = BIT_MASK(EV_SND);
wm8962->beep->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
wm8962->beep->event = wm8962_beep_event;
wm8962->beep->dev.parent = codec->dev;
input_set_drvdata(wm8962->beep, codec);
ret = input_register_device(wm8962->beep);
if (ret != 0) {
input_free_device(wm8962->beep);
wm8962->beep = NULL;
dev_err(codec->dev, "Failed to register beep device\n");
}
ret = device_create_file(codec->dev, &dev_attr_beep);
if (ret != 0) {
dev_err(codec->dev, "Failed to create keyclick file: %d\n",
ret);
}
}
static void wm8962_free_beep(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
device_remove_file(codec->dev, &dev_attr_beep);
input_unregister_device(wm8962->beep);
cancel_work_sync(&wm8962->beep_work);
wm8962->beep = NULL;
snd_soc_update_bits(codec, WM8962_BEEP_GENERATOR_1, WM8962_BEEP_ENA,0);
}
#else
static void wm8962_init_beep(struct snd_soc_codec *codec)
{
}
static void wm8962_free_beep(struct snd_soc_codec *codec)
{
}
#endif
static int wm8962_probe(struct snd_soc_codec *codec)
{
int ret;
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
struct wm8962_pdata *pdata = dev_get_platdata(codec->dev);
int i;
wm8962->codec = codec;
codec->cache_sync = 1;
codec->idle_bias_off = 1;
ret = snd_soc_codec_set_cache_io(codec, 16, 16, SND_SOC_I2C);
if (ret != 0) {
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
goto err;
}
for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++)
wm8962->supplies[i].supply = wm8962_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8962->supplies),
wm8962->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
goto err;
}
wm8962->disable_nb[0].notifier_call = wm8962_regulator_event_0;
wm8962->disable_nb[1].notifier_call = wm8962_regulator_event_1;
wm8962->disable_nb[2].notifier_call = wm8962_regulator_event_2;
wm8962->disable_nb[3].notifier_call = wm8962_regulator_event_3;
wm8962->disable_nb[4].notifier_call = wm8962_regulator_event_4;
wm8962->disable_nb[5].notifier_call = wm8962_regulator_event_5;
wm8962->disable_nb[6].notifier_call = wm8962_regulator_event_6;
wm8962->disable_nb[7].notifier_call = wm8962_regulator_event_7;
/* This should really be moved into the regulator core */
for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++) {
ret = regulator_register_notifier(wm8962->supplies[i].consumer,
&wm8962->disable_nb[i]);
if (ret != 0) {
dev_err(codec->dev,
"Failed to register regulator notifier: %d\n",
ret);
}
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8962->supplies),
wm8962->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_get;
}
ret = snd_soc_read(codec, WM8962_SOFTWARE_RESET);
if (ret < 0) {
dev_err(codec->dev, "Failed to read ID register\n");
goto err_enable;
}
if (ret != wm8962_reg[WM8962_SOFTWARE_RESET]) {
dev_err(codec->dev, "Device is not a WM8962, ID %x != %x\n",
ret, wm8962_reg[WM8962_SOFTWARE_RESET]);
ret = -EINVAL;
goto err_enable;
}
ret = snd_soc_read(codec, WM8962_RIGHT_INPUT_VOLUME);
if (ret < 0) {
dev_err(codec->dev, "Failed to read device revision: %d\n",
ret);
goto err_enable;
}
dev_info(codec->dev, "customer id %x revision %c\n",
(ret & WM8962_CUST_ID_MASK) >> WM8962_CUST_ID_SHIFT,
((ret & WM8962_CHIP_REV_MASK) >> WM8962_CHIP_REV_SHIFT)
+ 'A');
ret = wm8962_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset\n");
goto err_enable;
}
/* SYSCLK defaults to on; make sure it is off so we can safely
* write to registers if the device is declocked.
*/
snd_soc_update_bits(codec, WM8962_CLOCKING2, WM8962_SYSCLK_ENA, 0);
regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies);
if (pdata) {
/* Apply static configuration for GPIOs */
for (i = 0; i < ARRAY_SIZE(pdata->gpio_init); i++)
if (pdata->gpio_init[i])
snd_soc_write(codec, 0x200 + i,
pdata->gpio_init[i] & 0xffff);
/* Put the speakers into mono mode? */
if (pdata->spk_mono)
wm8962->reg_cache[WM8962_CLASS_D_CONTROL_2]
|= WM8962_SPK_MONO;
}
/* Latch volume update bits */
wm8962->reg_cache[WM8962_LEFT_INPUT_VOLUME] |= WM8962_IN_VU;
wm8962->reg_cache[WM8962_RIGHT_INPUT_VOLUME] |= WM8962_IN_VU;
wm8962->reg_cache[WM8962_LEFT_ADC_VOLUME] |= WM8962_ADC_VU;
wm8962->reg_cache[WM8962_RIGHT_ADC_VOLUME] |= WM8962_ADC_VU;
wm8962->reg_cache[WM8962_LEFT_DAC_VOLUME] |= WM8962_DAC_VU;
wm8962->reg_cache[WM8962_RIGHT_DAC_VOLUME] |= WM8962_DAC_VU;
wm8962->reg_cache[WM8962_SPKOUTL_VOLUME] |= WM8962_SPKOUT_VU;
wm8962->reg_cache[WM8962_SPKOUTR_VOLUME] |= WM8962_SPKOUT_VU;
wm8962->reg_cache[WM8962_HPOUTL_VOLUME] |= WM8962_HPOUT_VU;
wm8962->reg_cache[WM8962_HPOUTR_VOLUME] |= WM8962_HPOUT_VU;
snd_soc_add_controls(codec, wm8962_snd_controls,
ARRAY_SIZE(wm8962_snd_controls));
wm8962_add_widgets(codec);
wm8962_init_beep(codec);
return 0;
err_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies);
err_get:
regulator_bulk_free(ARRAY_SIZE(wm8962->supplies), wm8962->supplies);
err:
kfree(wm8962);
return ret;
}
static int wm8962_remove(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int i;
wm8962_free_beep(codec);
for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++)
regulator_unregister_notifier(wm8962->supplies[i].consumer,
&wm8962->disable_nb[i]);
regulator_bulk_free(ARRAY_SIZE(wm8962->supplies), wm8962->supplies);
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8962 = {
.probe = wm8962_probe,
.remove = wm8962_remove,
.resume = wm8962_resume,
.set_bias_level = wm8962_set_bias_level,
.reg_cache_size = WM8962_MAX_REGISTER,
.reg_word_size = sizeof(u16),
.reg_cache_default = wm8962_reg,
.volatile_register = wm8962_volatile_register,
.readable_register = wm8962_readable_register,
};
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8962_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8962_priv *wm8962;
int ret;
wm8962 = kzalloc(sizeof(struct wm8962_priv), GFP_KERNEL);
if (wm8962 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, wm8962);
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8962, &wm8962_dai, 1);
if (ret < 0)
kfree(wm8962);
return ret;
}
static __devexit int wm8962_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
kfree(i2c_get_clientdata(client));
return 0;
}
static const struct i2c_device_id wm8962_i2c_id[] = {
{ "wm8962", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8962_i2c_id);
static struct i2c_driver wm8962_i2c_driver = {
.driver = {
.name = "WM8962",
.owner = THIS_MODULE,
},
.probe = wm8962_i2c_probe,
.remove = __devexit_p(wm8962_i2c_remove),
.id_table = wm8962_i2c_id,
};
#endif
static int __init wm8962_modinit(void)
{
int ret;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8962_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8962 I2C driver: %d\n",
ret);
}
#endif
return 0;
}
module_init(wm8962_modinit);
static void __exit wm8962_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8962_i2c_driver);
#endif
}
module_exit(wm8962_exit);
MODULE_DESCRIPTION("ASoC WM8962 driver");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
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