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linux/sound/soc/codecs/wm8962.c
Mark Brown 8ca2aa9c59 ASoC: Put WM8962 GPIO2/3 into GPIO mode when configuring platform data too 
GPIO2 and GPIO3 on the WM8962 are MFPs and need to be put into GPIO mode
before the GPIO block can be used to control them. We're already doing
this when used via gpiolib, factor out the code for use when setting static
configurations via platform data as well.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-10-02 14:23:57 -07:00

2142 lines
58 KiB
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/gpio.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/jack.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 delayed_work mic_work;
struct snd_soc_jack *jack;
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
#ifdef CONFIG_GPIOLIB
struct gpio_chip gpio_chip;
#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_MICBIAS("MICBIAS", WM8962_PWR_MGMT_1, 1, 0),
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 (!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) & WM8962_FLL_ENA;
/* 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,
};
static void wm8962_mic_work(struct work_struct *work)
{
struct wm8962_priv *wm8962 = container_of(work,
struct wm8962_priv,
mic_work.work);
struct snd_soc_codec *codec = wm8962->codec;
int status = 0;
int irq_pol = 0;
int reg;
reg = snd_soc_read(codec, WM8962_ADDITIONAL_CONTROL_4);
if (reg & WM8962_MICDET_STS) {
status |= SND_JACK_MICROPHONE;
irq_pol |= WM8962_MICD_IRQ_POL;
}
if (reg & WM8962_MICSHORT_STS) {
status |= SND_JACK_BTN_0;
irq_pol |= WM8962_MICSCD_IRQ_POL;
}
snd_soc_jack_report(wm8962->jack, status,
SND_JACK_MICROPHONE | SND_JACK_BTN_0);
snd_soc_update_bits(codec, WM8962_MICINT_SOURCE_POL,
WM8962_MICSCD_IRQ_POL |
WM8962_MICD_IRQ_POL, irq_pol);
}
static irqreturn_t wm8962_irq(int irq, void *data)
{
struct snd_soc_codec *codec = data;
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int mask;
int active;
mask = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2);
active = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2);
active &= ~mask;
if (active & WM8962_FIFOS_ERR_EINT)
dev_err(codec->dev, "FIFO error\n");
if (active & WM8962_TEMP_SHUT_EINT)
dev_crit(codec->dev, "Thermal shutdown\n");
if (active & (WM8962_MICSCD_EINT | WM8962_MICD_EINT)) {
dev_dbg(codec->dev, "Microphone event detected\n");
schedule_delayed_work(&wm8962->mic_work,
msecs_to_jiffies(250));
}
/* Acknowledge the interrupts */
snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active);
return IRQ_HANDLED;
}
/**
* wm8962_mic_detect - Enable microphone detection via the WM8962 IRQ
*
* @codec: WM8962 codec
* @jack: jack to report detection events on
*
* Enable microphone detection via IRQ on the WM8962. If GPIOs are
* being used to bring out signals to the processor then only platform
* data configuration is needed for WM8962 and processor GPIOs should
* be configured using snd_soc_jack_add_gpios() instead.
*
* If no jack is supplied detection will be disabled.
*/
int wm8962_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int irq_mask, enable;
wm8962->jack = jack;
if (jack) {
irq_mask = 0;
enable = WM8962_MICDET_ENA;
} else {
irq_mask = WM8962_MICD_EINT | WM8962_MICSCD_EINT;
enable = 0;
}
snd_soc_update_bits(codec, WM8962_INTERRUPT_STATUS_2_MASK,
WM8962_MICD_EINT | WM8962_MICSCD_EINT, irq_mask);
snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_4,
WM8962_MICDET_ENA, enable);
/* Send an initial empty report */
snd_soc_jack_report(wm8962->jack, 0,
SND_JACK_MICROPHONE | SND_JACK_BTN_0);
return 0;
}
EXPORT_SYMBOL_GPL(wm8962_mic_detect);
#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 void wm8962_set_gpio_mode(struct snd_soc_codec *codec, int gpio)
{
int mask = 0;
int val = 0;
/* Some of the GPIOs are behind MFP configuration and need to
* be put into GPIO mode. */
switch (gpio) {
case 2:
mask = WM8962_CLKOUT2_SEL_MASK;
val = 1 << WM8962_CLKOUT2_SEL_SHIFT;
break;
case 3:
mask = WM8962_CLKOUT3_SEL_MASK;
val = 1 << WM8962_CLKOUT3_SEL_SHIFT;
break;
default:
break;
}
if (mask)
snd_soc_update_bits(codec, WM8962_ANALOGUE_CLOCKING1,
mask, val);
}
#ifdef CONFIG_GPIOLIB
static inline struct wm8962_priv *gpio_to_wm8962(struct gpio_chip *chip)
{
return container_of(chip, struct wm8962_priv, gpio_chip);
}
static int wm8962_gpio_request(struct gpio_chip *chip, unsigned offset)
{
struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
struct snd_soc_codec *codec = wm8962->codec;
/* The WM8962 GPIOs aren't linearly numbered. For simplicity
* we export linear numbers and error out if the unsupported
* ones are requsted.
*/
switch (offset + 1) {
case 2:
case 3:
case 5:
case 6:
break;
default:
return -EINVAL;
}
wm8962_set_gpio_mode(codec, offset + 1);
return 0;
}
static void wm8962_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
struct snd_soc_codec *codec = wm8962->codec;
snd_soc_update_bits(codec, WM8962_GPIO_BASE + offset,
WM8962_GP2_LVL, value << WM8962_GP2_LVL_SHIFT);
}
static int wm8962_gpio_direction_out(struct gpio_chip *chip,
unsigned offset, int value)
{
struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
struct snd_soc_codec *codec = wm8962->codec;
int val;
/* Force function 1 (logic output) */
val = (1 << WM8962_GP2_FN_SHIFT) | (value << WM8962_GP2_LVL_SHIFT);
return snd_soc_update_bits(codec, WM8962_GPIO_BASE + offset,
WM8962_GP2_FN_MASK | WM8962_GP2_LVL, val);
}
static struct gpio_chip wm8962_template_chip = {
.label = "wm8962",
.owner = THIS_MODULE,
.request = wm8962_gpio_request,
.direction_output = wm8962_gpio_direction_out,
.set = wm8962_gpio_set,
.can_sleep = 1,
};
static void wm8962_init_gpio(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
struct wm8962_pdata *pdata = dev_get_platdata(codec->dev);
int ret;
wm8962->gpio_chip = wm8962_template_chip;
wm8962->gpio_chip.ngpio = WM8962_MAX_GPIO;
wm8962->gpio_chip.dev = codec->dev;
if (pdata && pdata->gpio_base)
wm8962->gpio_chip.base = pdata->gpio_base;
else
wm8962->gpio_chip.base = -1;
ret = gpiochip_add(&wm8962->gpio_chip);
if (ret != 0)
dev_err(codec->dev, "Failed to add GPIOs: %d\n", ret);
}
static void wm8962_free_gpio(struct snd_soc_codec *codec)
{
struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int ret;
ret = gpiochip_remove(&wm8962->gpio_chip);
if (ret != 0)
dev_err(codec->dev, "Failed to remove GPIOs: %d\n", ret);
}
#else
static void wm8962_init_gpio(struct snd_soc_codec *codec)
{
}
static void wm8962_free_gpio(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);
struct i2c_client *i2c = container_of(codec->dev, struct i2c_client,
dev);
int i, trigger, irq_pol;
wm8962->codec = codec;
INIT_DELAYED_WORK(&wm8962->mic_work, wm8962_mic_work);
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]) {
wm8962_set_gpio_mode(codec, i + 1);
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;
/* Micbias setup, detection enable and detection
* threasholds. */
if (pdata->mic_cfg)
snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_4,
WM8962_MICDET_ENA |
WM8962_MICDET_THR_MASK |
WM8962_MICSHORT_THR_MASK |
WM8962_MICBIAS_LVL,
pdata->mic_cfg);
}
/* 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;
wm8962_add_widgets(codec);
wm8962_init_beep(codec);
wm8962_init_gpio(codec);
if (i2c->irq) {
if (pdata && pdata->irq_active_low) {
trigger = IRQF_TRIGGER_LOW;
irq_pol = WM8962_IRQ_POL;
} else {
trigger = IRQF_TRIGGER_HIGH;
irq_pol = 0;
}
snd_soc_update_bits(codec, WM8962_INTERRUPT_CONTROL,
WM8962_IRQ_POL, irq_pol);
ret = request_threaded_irq(i2c->irq, NULL, wm8962_irq,
trigger | IRQF_ONESHOT,
"wm8962", codec);
if (ret != 0) {
dev_err(codec->dev, "Failed to request IRQ %d: %d\n",
i2c->irq, ret);
/* Non-fatal */
} else {
/* Enable error reporting IRQs by default */
snd_soc_update_bits(codec,
WM8962_INTERRUPT_STATUS_2_MASK,
WM8962_TEMP_SHUT_EINT |
WM8962_FIFOS_ERR_EINT, 0);
}
}
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);
struct i2c_client *i2c = container_of(codec->dev, struct i2c_client,
dev);
int i;
if (i2c->irq)
free_irq(i2c->irq, codec);
cancel_delayed_work_sync(&wm8962->mic_work);
wm8962_free_gpio(codec);
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 + 1,
.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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