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linux/sound/soc/codecs/da7219-aad.c
Adam Thomson 86834511c2 ASoC: da7219: Improve pop/click performance for sensitive HPs 
Currently on some headsets slight pops can be heard during DAPM
power-up/down. This can also be witnessed during the HP detect
procedure. This patch addresses the issue by adjusting DAPM power
sequencing slightly, the introduction of delays and use of
minimum HP gain to avoid such noise artefacts.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-10-05 13:53:11 +02:00

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/*
* da7219-aad.c - Dialog DA7219 ALSA SoC AAD Driver
*
* Copyright (c) 2015 Dialog Semiconductor Ltd.
*
* Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/i2c.h>
#include <linux/property.h>
#include <linux/pm_wakeirq.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/da7219.h>
#include "da7219.h"
#include "da7219-aad.h"
/*
* Detection control
*/
void da7219_aad_jack_det(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
{
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
da7219->aad->jack = jack;
da7219->aad->jack_inserted = false;
/* Send an initial empty report */
snd_soc_jack_report(jack, 0, DA7219_AAD_REPORT_ALL_MASK);
/* Enable/Disable jack detection */
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
DA7219_ACCDET_EN_MASK,
(jack ? DA7219_ACCDET_EN_MASK : 0));
}
EXPORT_SYMBOL_GPL(da7219_aad_jack_det);
/*
* Button/HPTest work
*/
static void da7219_aad_btn_det_work(struct work_struct *work)
{
struct da7219_aad_priv *da7219_aad =
container_of(work, struct da7219_aad_priv, btn_det_work);
struct snd_soc_codec *codec = da7219_aad->codec;
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
u8 statusa, micbias_ctrl;
bool micbias_up = false;
int retries = 0;
/* Drive headphones/lineout */
snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
DA7219_HP_L_AMP_OE_MASK,
DA7219_HP_L_AMP_OE_MASK);
snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
DA7219_HP_R_AMP_OE_MASK,
DA7219_HP_R_AMP_OE_MASK);
/* Make sure mic bias is up */
snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
snd_soc_dapm_sync(dapm);
do {
statusa = snd_soc_read(codec, DA7219_ACCDET_STATUS_A);
if (statusa & DA7219_MICBIAS_UP_STS_MASK)
micbias_up = true;
else if (retries++ < DA7219_AAD_MICBIAS_CHK_RETRIES)
msleep(DA7219_AAD_MICBIAS_CHK_DELAY);
} while ((!micbias_up) && (retries < DA7219_AAD_MICBIAS_CHK_RETRIES));
if (retries >= DA7219_AAD_MICBIAS_CHK_RETRIES)
dev_warn(codec->dev, "Mic bias status check timed out");
/*
* Mic bias pulse required to enable mic, must be done before enabling
* button detection to prevent erroneous button readings.
*/
if (da7219_aad->micbias_pulse_lvl && da7219_aad->micbias_pulse_time) {
/* Pulse higher level voltage */
micbias_ctrl = snd_soc_read(codec, DA7219_MICBIAS_CTRL);
snd_soc_update_bits(codec, DA7219_MICBIAS_CTRL,
DA7219_MICBIAS1_LEVEL_MASK,
da7219_aad->micbias_pulse_lvl);
msleep(da7219_aad->micbias_pulse_time);
snd_soc_write(codec, DA7219_MICBIAS_CTRL, micbias_ctrl);
}
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
DA7219_BUTTON_CONFIG_MASK,
da7219_aad->btn_cfg);
}
static void da7219_aad_hptest_work(struct work_struct *work)
{
struct da7219_aad_priv *da7219_aad =
container_of(work, struct da7219_aad_priv, hptest_work);
struct snd_soc_codec *codec = da7219_aad->codec;
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
u16 tonegen_freq_hptest;
u8 pll_srm_sts, gain_ramp_ctrl, accdet_cfg8;
int report = 0, ret = 0;
/* Lock DAPM and any Kcontrols that are affected by this test */
snd_soc_dapm_mutex_lock(dapm);
mutex_lock(&da7219->lock);
/* Ensure MCLK is available for HP test procedure */
if (da7219->mclk) {
ret = clk_prepare_enable(da7219->mclk);
if (ret) {
dev_err(codec->dev, "Failed to enable mclk - %d\n", ret);
mutex_unlock(&da7219->lock);
snd_soc_dapm_mutex_unlock(dapm);
return;
}
}
/*
* If MCLK not present, then we're using the internal oscillator and
* require different frequency settings to achieve the same result.
*/
pll_srm_sts = snd_soc_read(codec, DA7219_PLL_SRM_STS);
if (pll_srm_sts & DA7219_PLL_SRM_STS_MCLK)
tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ);
else
tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ_INT_OSC);
/* Ensure gain ramping at fastest rate */
gain_ramp_ctrl = snd_soc_read(codec, DA7219_GAIN_RAMP_CTRL);
snd_soc_write(codec, DA7219_GAIN_RAMP_CTRL, DA7219_GAIN_RAMP_RATE_X8);
/* Bypass cache so it saves current settings */
regcache_cache_bypass(da7219->regmap, true);
/* Make sure Tone Generator is disabled */
snd_soc_write(codec, DA7219_TONE_GEN_CFG1, 0);
/* Enable HPTest block, 1KOhms check */
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_8,
DA7219_HPTEST_EN_MASK | DA7219_HPTEST_RES_SEL_MASK,
DA7219_HPTEST_EN_MASK |
DA7219_HPTEST_RES_SEL_1KOHMS);
/* Set gains to 0db */
snd_soc_write(codec, DA7219_DAC_L_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
snd_soc_write(codec, DA7219_DAC_R_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
snd_soc_write(codec, DA7219_HP_L_GAIN, DA7219_HP_AMP_GAIN_0DB);
snd_soc_write(codec, DA7219_HP_R_GAIN, DA7219_HP_AMP_GAIN_0DB);
/* Disable DAC filters, EQs and soft mute */
snd_soc_update_bits(codec, DA7219_DAC_FILTERS1, DA7219_HPF_MODE_MASK,
0);
snd_soc_update_bits(codec, DA7219_DAC_FILTERS4, DA7219_DAC_EQ_EN_MASK,
0);
snd_soc_update_bits(codec, DA7219_DAC_FILTERS5,
DA7219_DAC_SOFTMUTE_EN_MASK, 0);
/* Enable HP left & right paths */
snd_soc_update_bits(codec, DA7219_CP_CTRL, DA7219_CP_EN_MASK,
DA7219_CP_EN_MASK);
snd_soc_update_bits(codec, DA7219_DIG_ROUTING_DAC,
DA7219_DAC_L_SRC_MASK | DA7219_DAC_R_SRC_MASK,
DA7219_DAC_L_SRC_TONEGEN |
DA7219_DAC_R_SRC_TONEGEN);
snd_soc_update_bits(codec, DA7219_DAC_L_CTRL,
DA7219_DAC_L_EN_MASK | DA7219_DAC_L_MUTE_EN_MASK,
DA7219_DAC_L_EN_MASK);
snd_soc_update_bits(codec, DA7219_DAC_R_CTRL,
DA7219_DAC_R_EN_MASK | DA7219_DAC_R_MUTE_EN_MASK,
DA7219_DAC_R_EN_MASK);
snd_soc_update_bits(codec, DA7219_MIXOUT_L_SELECT,
DA7219_MIXOUT_L_MIX_SELECT_MASK,
DA7219_MIXOUT_L_MIX_SELECT_MASK);
snd_soc_update_bits(codec, DA7219_MIXOUT_R_SELECT,
DA7219_MIXOUT_R_MIX_SELECT_MASK,
DA7219_MIXOUT_R_MIX_SELECT_MASK);
snd_soc_update_bits(codec, DA7219_DROUTING_ST_OUTFILT_1L,
DA7219_OUTFILT_ST_1L_SRC_MASK,
DA7219_DMIX_ST_SRC_OUTFILT1L);
snd_soc_update_bits(codec, DA7219_DROUTING_ST_OUTFILT_1R,
DA7219_OUTFILT_ST_1R_SRC_MASK,
DA7219_DMIX_ST_SRC_OUTFILT1R);
snd_soc_update_bits(codec, DA7219_MIXOUT_L_CTRL,
DA7219_MIXOUT_L_AMP_EN_MASK,
DA7219_MIXOUT_L_AMP_EN_MASK);
snd_soc_update_bits(codec, DA7219_MIXOUT_R_CTRL,
DA7219_MIXOUT_R_AMP_EN_MASK,
DA7219_MIXOUT_R_AMP_EN_MASK);
snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK,
DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK,
DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
msleep(DA7219_SETTLING_DELAY);
snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
DA7219_HP_L_AMP_MUTE_EN_MASK |
DA7219_HP_L_AMP_MIN_GAIN_EN_MASK, 0);
snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
DA7219_HP_R_AMP_MUTE_EN_MASK |
DA7219_HP_R_AMP_MIN_GAIN_EN_MASK, 0);
/*
* If we're running from the internal oscillator then give audio paths
* time to settle before running test.
*/
if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
/* Configure & start Tone Generator */
snd_soc_write(codec, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
regmap_raw_write(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
&tonegen_freq_hptest, sizeof(tonegen_freq_hptest));
snd_soc_update_bits(codec, DA7219_TONE_GEN_CFG2,
DA7219_SWG_SEL_MASK | DA7219_TONE_GEN_GAIN_MASK,
DA7219_SWG_SEL_SRAMP |
DA7219_TONE_GEN_GAIN_MINUS_15DB);
snd_soc_write(codec, DA7219_TONE_GEN_CFG1, DA7219_START_STOPN_MASK);
msleep(DA7219_AAD_HPTEST_PERIOD);
/* Grab comparator reading */
accdet_cfg8 = snd_soc_read(codec, DA7219_ACCDET_CONFIG_8);
if (accdet_cfg8 & DA7219_HPTEST_COMP_MASK)
report |= SND_JACK_HEADPHONE;
else
report |= SND_JACK_LINEOUT;
/* Stop tone generator */
snd_soc_write(codec, DA7219_TONE_GEN_CFG1, 0);
msleep(DA7219_AAD_HPTEST_PERIOD);
/* Restore original settings from cache */
regcache_mark_dirty(da7219->regmap);
regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL,
DA7219_HP_R_CTRL);
msleep(DA7219_SETTLING_DELAY);
regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL,
DA7219_MIXOUT_R_CTRL);
regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L,
DA7219_DROUTING_ST_OUTFILT_1R);
regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_SELECT,
DA7219_MIXOUT_R_SELECT);
regcache_sync_region(da7219->regmap, DA7219_DAC_L_CTRL,
DA7219_DAC_R_CTRL);
regcache_sync_region(da7219->regmap, DA7219_DIG_ROUTING_DAC,
DA7219_DIG_ROUTING_DAC);
regcache_sync_region(da7219->regmap, DA7219_CP_CTRL, DA7219_CP_CTRL);
regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS5,
DA7219_DAC_FILTERS5);
regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS4,
DA7219_DAC_FILTERS1);
regcache_sync_region(da7219->regmap, DA7219_HP_L_GAIN,
DA7219_HP_R_GAIN);
regcache_sync_region(da7219->regmap, DA7219_DAC_L_GAIN,
DA7219_DAC_R_GAIN);
regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_ON_PER,
DA7219_TONE_GEN_ON_PER);
regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
DA7219_TONE_GEN_FREQ1_U);
regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_CFG1,
DA7219_TONE_GEN_CFG2);
regcache_cache_bypass(da7219->regmap, false);
/* Disable HPTest block */
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_8,
DA7219_HPTEST_EN_MASK, 0);
/*
* If we're running from the internal oscillator then give audio paths
* time to settle before allowing headphones to be driven as required.
*/
if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
/* Restore gain ramping rate */
snd_soc_write(codec, DA7219_GAIN_RAMP_CTRL, gain_ramp_ctrl);
/* Drive Headphones/lineout */
snd_soc_update_bits(codec, DA7219_HP_L_CTRL, DA7219_HP_L_AMP_OE_MASK,
DA7219_HP_L_AMP_OE_MASK);
snd_soc_update_bits(codec, DA7219_HP_R_CTRL, DA7219_HP_R_AMP_OE_MASK,
DA7219_HP_R_AMP_OE_MASK);
/* Remove MCLK, if previously enabled */
if (da7219->mclk)
clk_disable_unprepare(da7219->mclk);
mutex_unlock(&da7219->lock);
snd_soc_dapm_mutex_unlock(dapm);
/*
* Only send report if jack hasn't been removed during process,
* otherwise it's invalid and we drop it.
*/
if (da7219_aad->jack_inserted)
snd_soc_jack_report(da7219_aad->jack, report,
SND_JACK_HEADSET | SND_JACK_LINEOUT);
}
/*
* IRQ
*/
static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
{
struct da7219_aad_priv *da7219_aad = data;
struct snd_soc_codec *codec = da7219_aad->codec;
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
u8 events[DA7219_AAD_IRQ_REG_MAX];
u8 statusa;
int i, report = 0, mask = 0;
/* Read current IRQ events */
regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
events, DA7219_AAD_IRQ_REG_MAX);
if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
return IRQ_NONE;
/* Read status register for jack insertion & type status */
statusa = snd_soc_read(codec, DA7219_ACCDET_STATUS_A);
/* Clear events */
regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
events, DA7219_AAD_IRQ_REG_MAX);
dev_dbg(codec->dev, "IRQ events = 0x%x|0x%x, status = 0x%x\n",
events[DA7219_AAD_IRQ_REG_A], events[DA7219_AAD_IRQ_REG_B],
statusa);
if (statusa & DA7219_JACK_INSERTION_STS_MASK) {
/* Jack Insertion */
if (events[DA7219_AAD_IRQ_REG_A] &
DA7219_E_JACK_INSERTED_MASK) {
report |= SND_JACK_MECHANICAL;
mask |= SND_JACK_MECHANICAL;
da7219_aad->jack_inserted = true;
}
/* Jack type detection */
if (events[DA7219_AAD_IRQ_REG_A] &
DA7219_E_JACK_DETECT_COMPLETE_MASK) {
/*
* If 4-pole, then enable button detection, else perform
* HP impedance test to determine output type to report.
*
* We schedule work here as the tasks themselves can
* take time to complete, and in particular for hptest
* we want to be able to check if the jack was removed
* during the procedure as this will invalidate the
* result. By doing this as work, the IRQ thread can
* handle a removal, and we can check at the end of
* hptest if we have a valid result or not.
*/
if (statusa & DA7219_JACK_TYPE_STS_MASK) {
report |= SND_JACK_HEADSET;
mask |= SND_JACK_HEADSET | SND_JACK_LINEOUT;
schedule_work(&da7219_aad->btn_det_work);
} else {
schedule_work(&da7219_aad->hptest_work);
}
}
/* Button support for 4-pole jack */
if (statusa & DA7219_JACK_TYPE_STS_MASK) {
for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
/* Button Press */
if (events[DA7219_AAD_IRQ_REG_B] &
(DA7219_E_BUTTON_A_PRESSED_MASK << i)) {
report |= SND_JACK_BTN_0 >> i;
mask |= SND_JACK_BTN_0 >> i;
}
}
snd_soc_jack_report(da7219_aad->jack, report, mask);
for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
/* Button Release */
if (events[DA7219_AAD_IRQ_REG_B] &
(DA7219_E_BUTTON_A_RELEASED_MASK >> i)) {
report &= ~(SND_JACK_BTN_0 >> i);
mask |= SND_JACK_BTN_0 >> i;
}
}
}
} else {
/* Jack removal */
if (events[DA7219_AAD_IRQ_REG_A] & DA7219_E_JACK_REMOVED_MASK) {
report = 0;
mask |= DA7219_AAD_REPORT_ALL_MASK;
da7219_aad->jack_inserted = false;
/* Un-drive headphones/lineout */
snd_soc_update_bits(codec, DA7219_HP_R_CTRL,
DA7219_HP_R_AMP_OE_MASK, 0);
snd_soc_update_bits(codec, DA7219_HP_L_CTRL,
DA7219_HP_L_AMP_OE_MASK, 0);
/* Ensure button detection disabled */
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
DA7219_BUTTON_CONFIG_MASK, 0);
/* Disable mic bias */
snd_soc_dapm_disable_pin(dapm, "Mic Bias");
snd_soc_dapm_sync(dapm);
/* Cancel any pending work */
cancel_work_sync(&da7219_aad->btn_det_work);
cancel_work_sync(&da7219_aad->hptest_work);
}
}
snd_soc_jack_report(da7219_aad->jack, report, mask);
return IRQ_HANDLED;
}
/*
* DT/ACPI to pdata conversion
*/
static enum da7219_aad_micbias_pulse_lvl
da7219_aad_fw_micbias_pulse_lvl(struct snd_soc_codec *codec, u32 val)
{
switch (val) {
case 2800:
return DA7219_AAD_MICBIAS_PULSE_LVL_2_8V;
case 2900:
return DA7219_AAD_MICBIAS_PULSE_LVL_2_9V;
default:
dev_warn(codec->dev, "Invalid micbias pulse level");
return DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
}
}
static enum da7219_aad_btn_cfg
da7219_aad_fw_btn_cfg(struct snd_soc_codec *codec, u32 val)
{
switch (val) {
case 2:
return DA7219_AAD_BTN_CFG_2MS;
case 5:
return DA7219_AAD_BTN_CFG_5MS;
case 10:
return DA7219_AAD_BTN_CFG_10MS;
case 50:
return DA7219_AAD_BTN_CFG_50MS;
case 100:
return DA7219_AAD_BTN_CFG_100MS;
case 200:
return DA7219_AAD_BTN_CFG_200MS;
case 500:
return DA7219_AAD_BTN_CFG_500MS;
default:
dev_warn(codec->dev, "Invalid button config");
return DA7219_AAD_BTN_CFG_10MS;
}
}
static enum da7219_aad_mic_det_thr
da7219_aad_fw_mic_det_thr(struct snd_soc_codec *codec, u32 val)
{
switch (val) {
case 200:
return DA7219_AAD_MIC_DET_THR_200_OHMS;
case 500:
return DA7219_AAD_MIC_DET_THR_500_OHMS;
case 750:
return DA7219_AAD_MIC_DET_THR_750_OHMS;
case 1000:
return DA7219_AAD_MIC_DET_THR_1000_OHMS;
default:
dev_warn(codec->dev, "Invalid mic detect threshold");
return DA7219_AAD_MIC_DET_THR_500_OHMS;
}
}
static enum da7219_aad_jack_ins_deb
da7219_aad_fw_jack_ins_deb(struct snd_soc_codec *codec, u32 val)
{
switch (val) {
case 5:
return DA7219_AAD_JACK_INS_DEB_5MS;
case 10:
return DA7219_AAD_JACK_INS_DEB_10MS;
case 20:
return DA7219_AAD_JACK_INS_DEB_20MS;
case 50:
return DA7219_AAD_JACK_INS_DEB_50MS;
case 100:
return DA7219_AAD_JACK_INS_DEB_100MS;
case 200:
return DA7219_AAD_JACK_INS_DEB_200MS;
case 500:
return DA7219_AAD_JACK_INS_DEB_500MS;
case 1000:
return DA7219_AAD_JACK_INS_DEB_1S;
default:
dev_warn(codec->dev, "Invalid jack insert debounce");
return DA7219_AAD_JACK_INS_DEB_20MS;
}
}
static enum da7219_aad_jack_det_rate
da7219_aad_fw_jack_det_rate(struct snd_soc_codec *codec, const char *str)
{
if (!strcmp(str, "32ms_64ms")) {
return DA7219_AAD_JACK_DET_RATE_32_64MS;
} else if (!strcmp(str, "64ms_128ms")) {
return DA7219_AAD_JACK_DET_RATE_64_128MS;
} else if (!strcmp(str, "128ms_256ms")) {
return DA7219_AAD_JACK_DET_RATE_128_256MS;
} else if (!strcmp(str, "256ms_512ms")) {
return DA7219_AAD_JACK_DET_RATE_256_512MS;
} else {
dev_warn(codec->dev, "Invalid jack detect rate");
return DA7219_AAD_JACK_DET_RATE_256_512MS;
}
}
static enum da7219_aad_jack_rem_deb
da7219_aad_fw_jack_rem_deb(struct snd_soc_codec *codec, u32 val)
{
switch (val) {
case 1:
return DA7219_AAD_JACK_REM_DEB_1MS;
case 5:
return DA7219_AAD_JACK_REM_DEB_5MS;
case 10:
return DA7219_AAD_JACK_REM_DEB_10MS;
case 20:
return DA7219_AAD_JACK_REM_DEB_20MS;
default:
dev_warn(codec->dev, "Invalid jack removal debounce");
return DA7219_AAD_JACK_REM_DEB_1MS;
}
}
static enum da7219_aad_btn_avg
da7219_aad_fw_btn_avg(struct snd_soc_codec *codec, u32 val)
{
switch (val) {
case 1:
return DA7219_AAD_BTN_AVG_1;
case 2:
return DA7219_AAD_BTN_AVG_2;
case 4:
return DA7219_AAD_BTN_AVG_4;
case 8:
return DA7219_AAD_BTN_AVG_8;
default:
dev_warn(codec->dev, "Invalid button average value");
return DA7219_AAD_BTN_AVG_2;
}
}
static enum da7219_aad_adc_1bit_rpt
da7219_aad_fw_adc_1bit_rpt(struct snd_soc_codec *codec, u32 val)
{
switch (val) {
case 1:
return DA7219_AAD_ADC_1BIT_RPT_1;
case 2:
return DA7219_AAD_ADC_1BIT_RPT_2;
case 4:
return DA7219_AAD_ADC_1BIT_RPT_4;
case 8:
return DA7219_AAD_ADC_1BIT_RPT_8;
default:
dev_warn(codec->dev, "Invalid ADC 1-bit repeat value");
return DA7219_AAD_ADC_1BIT_RPT_1;
}
}
static struct da7219_aad_pdata *da7219_aad_fw_to_pdata(struct snd_soc_codec *codec)
{
struct device *dev = codec->dev;
struct i2c_client *i2c = to_i2c_client(dev);
struct fwnode_handle *aad_np;
struct da7219_aad_pdata *aad_pdata;
const char *fw_str;
u32 fw_val32;
aad_np = device_get_named_child_node(dev, "da7219_aad");
if (!aad_np)
return NULL;
aad_pdata = devm_kzalloc(codec->dev, sizeof(*aad_pdata), GFP_KERNEL);
if (!aad_pdata)
return NULL;
aad_pdata->irq = i2c->irq;
if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
&fw_val32) >= 0)
aad_pdata->micbias_pulse_lvl =
da7219_aad_fw_micbias_pulse_lvl(codec, fw_val32);
else
aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-time",
&fw_val32) >= 0)
aad_pdata->micbias_pulse_time = fw_val32;
if (fwnode_property_read_u32(aad_np, "dlg,btn-cfg", &fw_val32) >= 0)
aad_pdata->btn_cfg = da7219_aad_fw_btn_cfg(codec, fw_val32);
else
aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
if (fwnode_property_read_u32(aad_np, "dlg,mic-det-thr", &fw_val32) >= 0)
aad_pdata->mic_det_thr =
da7219_aad_fw_mic_det_thr(codec, fw_val32);
else
aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
if (fwnode_property_read_u32(aad_np, "dlg,jack-ins-deb", &fw_val32) >= 0)
aad_pdata->jack_ins_deb =
da7219_aad_fw_jack_ins_deb(codec, fw_val32);
else
aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
if (!fwnode_property_read_string(aad_np, "dlg,jack-det-rate", &fw_str))
aad_pdata->jack_det_rate =
da7219_aad_fw_jack_det_rate(codec, fw_str);
else
aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
if (fwnode_property_read_u32(aad_np, "dlg,jack-rem-deb", &fw_val32) >= 0)
aad_pdata->jack_rem_deb =
da7219_aad_fw_jack_rem_deb(codec, fw_val32);
else
aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
if (fwnode_property_read_u32(aad_np, "dlg,a-d-btn-thr", &fw_val32) >= 0)
aad_pdata->a_d_btn_thr = (u8) fw_val32;
else
aad_pdata->a_d_btn_thr = 0xA;
if (fwnode_property_read_u32(aad_np, "dlg,d-b-btn-thr", &fw_val32) >= 0)
aad_pdata->d_b_btn_thr = (u8) fw_val32;
else
aad_pdata->d_b_btn_thr = 0x16;
if (fwnode_property_read_u32(aad_np, "dlg,b-c-btn-thr", &fw_val32) >= 0)
aad_pdata->b_c_btn_thr = (u8) fw_val32;
else
aad_pdata->b_c_btn_thr = 0x21;
if (fwnode_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &fw_val32) >= 0)
aad_pdata->c_mic_btn_thr = (u8) fw_val32;
else
aad_pdata->c_mic_btn_thr = 0x3E;
if (fwnode_property_read_u32(aad_np, "dlg,btn-avg", &fw_val32) >= 0)
aad_pdata->btn_avg = da7219_aad_fw_btn_avg(codec, fw_val32);
else
aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
if (fwnode_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &fw_val32) >= 0)
aad_pdata->adc_1bit_rpt =
da7219_aad_fw_adc_1bit_rpt(codec, fw_val32);
else
aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
return aad_pdata;
}
static void da7219_aad_handle_pdata(struct snd_soc_codec *codec)
{
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
struct da7219_aad_priv *da7219_aad = da7219->aad;
struct da7219_pdata *pdata = da7219->pdata;
if ((pdata) && (pdata->aad_pdata)) {
struct da7219_aad_pdata *aad_pdata = pdata->aad_pdata;
u8 cfg, mask;
da7219_aad->irq = aad_pdata->irq;
switch (aad_pdata->micbias_pulse_lvl) {
case DA7219_AAD_MICBIAS_PULSE_LVL_2_8V:
case DA7219_AAD_MICBIAS_PULSE_LVL_2_9V:
da7219_aad->micbias_pulse_lvl =
(aad_pdata->micbias_pulse_lvl <<
DA7219_MICBIAS1_LEVEL_SHIFT);
break;
default:
break;
}
da7219_aad->micbias_pulse_time = aad_pdata->micbias_pulse_time;
switch (aad_pdata->btn_cfg) {
case DA7219_AAD_BTN_CFG_2MS:
case DA7219_AAD_BTN_CFG_5MS:
case DA7219_AAD_BTN_CFG_10MS:
case DA7219_AAD_BTN_CFG_50MS:
case DA7219_AAD_BTN_CFG_100MS:
case DA7219_AAD_BTN_CFG_200MS:
case DA7219_AAD_BTN_CFG_500MS:
da7219_aad->btn_cfg = (aad_pdata->btn_cfg <<
DA7219_BUTTON_CONFIG_SHIFT);
}
cfg = 0;
mask = 0;
switch (aad_pdata->mic_det_thr) {
case DA7219_AAD_MIC_DET_THR_200_OHMS:
case DA7219_AAD_MIC_DET_THR_500_OHMS:
case DA7219_AAD_MIC_DET_THR_750_OHMS:
case DA7219_AAD_MIC_DET_THR_1000_OHMS:
cfg |= (aad_pdata->mic_det_thr <<
DA7219_MIC_DET_THRESH_SHIFT);
mask |= DA7219_MIC_DET_THRESH_MASK;
}
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1, mask, cfg);
cfg = 0;
mask = 0;
switch (aad_pdata->jack_ins_deb) {
case DA7219_AAD_JACK_INS_DEB_5MS:
case DA7219_AAD_JACK_INS_DEB_10MS:
case DA7219_AAD_JACK_INS_DEB_20MS:
case DA7219_AAD_JACK_INS_DEB_50MS:
case DA7219_AAD_JACK_INS_DEB_100MS:
case DA7219_AAD_JACK_INS_DEB_200MS:
case DA7219_AAD_JACK_INS_DEB_500MS:
case DA7219_AAD_JACK_INS_DEB_1S:
cfg |= (aad_pdata->jack_ins_deb <<
DA7219_JACKDET_DEBOUNCE_SHIFT);
mask |= DA7219_JACKDET_DEBOUNCE_MASK;
}
switch (aad_pdata->jack_det_rate) {
case DA7219_AAD_JACK_DET_RATE_32_64MS:
case DA7219_AAD_JACK_DET_RATE_64_128MS:
case DA7219_AAD_JACK_DET_RATE_128_256MS:
case DA7219_AAD_JACK_DET_RATE_256_512MS:
cfg |= (aad_pdata->jack_det_rate <<
DA7219_JACK_DETECT_RATE_SHIFT);
mask |= DA7219_JACK_DETECT_RATE_MASK;
}
switch (aad_pdata->jack_rem_deb) {
case DA7219_AAD_JACK_REM_DEB_1MS:
case DA7219_AAD_JACK_REM_DEB_5MS:
case DA7219_AAD_JACK_REM_DEB_10MS:
case DA7219_AAD_JACK_REM_DEB_20MS:
cfg |= (aad_pdata->jack_rem_deb <<
DA7219_JACKDET_REM_DEB_SHIFT);
mask |= DA7219_JACKDET_REM_DEB_MASK;
}
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_2, mask, cfg);
snd_soc_write(codec, DA7219_ACCDET_CONFIG_3,
aad_pdata->a_d_btn_thr);
snd_soc_write(codec, DA7219_ACCDET_CONFIG_4,
aad_pdata->d_b_btn_thr);
snd_soc_write(codec, DA7219_ACCDET_CONFIG_5,
aad_pdata->b_c_btn_thr);
snd_soc_write(codec, DA7219_ACCDET_CONFIG_6,
aad_pdata->c_mic_btn_thr);
cfg = 0;
mask = 0;
switch (aad_pdata->btn_avg) {
case DA7219_AAD_BTN_AVG_1:
case DA7219_AAD_BTN_AVG_2:
case DA7219_AAD_BTN_AVG_4:
case DA7219_AAD_BTN_AVG_8:
cfg |= (aad_pdata->btn_avg <<
DA7219_BUTTON_AVERAGE_SHIFT);
mask |= DA7219_BUTTON_AVERAGE_MASK;
}
switch (aad_pdata->adc_1bit_rpt) {
case DA7219_AAD_ADC_1BIT_RPT_1:
case DA7219_AAD_ADC_1BIT_RPT_2:
case DA7219_AAD_ADC_1BIT_RPT_4:
case DA7219_AAD_ADC_1BIT_RPT_8:
cfg |= (aad_pdata->adc_1bit_rpt <<
DA7219_ADC_1_BIT_REPEAT_SHIFT);
mask |= DA7219_ADC_1_BIT_REPEAT_MASK;
}
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_7, mask, cfg);
}
}
/*
* Suspend/Resume
*/
void da7219_aad_suspend(struct snd_soc_codec *codec)
{
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
struct da7219_aad_priv *da7219_aad = da7219->aad;
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
u8 micbias_ctrl;
if (da7219_aad->jack) {
/* Disable jack detection during suspend */
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
DA7219_ACCDET_EN_MASK, 0);
/*
* If we have a 4-pole jack inserted, then micbias will be
* enabled. We can disable micbias here, and keep a note to
* re-enable it on resume. If jack removal occurred during
* suspend then this will be dealt with through the IRQ handler.
*/
if (da7219_aad->jack_inserted) {
micbias_ctrl = snd_soc_read(codec, DA7219_MICBIAS_CTRL);
if (micbias_ctrl & DA7219_MICBIAS1_EN_MASK) {
snd_soc_dapm_disable_pin(dapm, "Mic Bias");
snd_soc_dapm_sync(dapm);
da7219_aad->micbias_resume_enable = true;
}
}
}
}
void da7219_aad_resume(struct snd_soc_codec *codec)
{
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
struct da7219_aad_priv *da7219_aad = da7219->aad;
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
if (da7219_aad->jack) {
/* Re-enable micbias if previously enabled for 4-pole jack */
if (da7219_aad->jack_inserted &&
da7219_aad->micbias_resume_enable) {
snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
snd_soc_dapm_sync(dapm);
da7219_aad->micbias_resume_enable = false;
}
/* Re-enable jack detection */
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
DA7219_ACCDET_EN_MASK,
DA7219_ACCDET_EN_MASK);
}
}
/*
* Init/Exit
*/
int da7219_aad_init(struct snd_soc_codec *codec)
{
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
struct da7219_aad_priv *da7219_aad;
u8 mask[DA7219_AAD_IRQ_REG_MAX];
int ret;
da7219_aad = devm_kzalloc(codec->dev, sizeof(*da7219_aad), GFP_KERNEL);
if (!da7219_aad)
return -ENOMEM;
da7219->aad = da7219_aad;
da7219_aad->codec = codec;
/* Handle any DT/ACPI/platform data */
if (da7219->pdata && !da7219->pdata->aad_pdata)
da7219->pdata->aad_pdata = da7219_aad_fw_to_pdata(codec);
da7219_aad_handle_pdata(codec);
/* Disable button detection */
snd_soc_update_bits(codec, DA7219_ACCDET_CONFIG_1,
DA7219_BUTTON_CONFIG_MASK, 0);
INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
ret = request_threaded_irq(da7219_aad->irq, NULL,
da7219_aad_irq_thread,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"da7219-aad", da7219_aad);
if (ret) {
dev_err(codec->dev, "Failed to request IRQ: %d\n", ret);
return ret;
}
/* Unmask AAD IRQs */
memset(mask, 0, DA7219_AAD_IRQ_REG_MAX);
regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
&mask, DA7219_AAD_IRQ_REG_MAX);
return 0;
}
EXPORT_SYMBOL_GPL(da7219_aad_init);
void da7219_aad_exit(struct snd_soc_codec *codec)
{
struct da7219_priv *da7219 = snd_soc_codec_get_drvdata(codec);
struct da7219_aad_priv *da7219_aad = da7219->aad;
u8 mask[DA7219_AAD_IRQ_REG_MAX];
/* Mask off AAD IRQs */
memset(mask, DA7219_BYTE_MASK, DA7219_AAD_IRQ_REG_MAX);
regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
mask, DA7219_AAD_IRQ_REG_MAX);
free_irq(da7219_aad->irq, da7219_aad);
cancel_work_sync(&da7219_aad->btn_det_work);
cancel_work_sync(&da7219_aad->hptest_work);
}
EXPORT_SYMBOL_GPL(da7219_aad_exit);
MODULE_DESCRIPTION("ASoC DA7219 AAD Driver");
MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
MODULE_LICENSE("GPL");
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