ASoC: codecs: Add da7219 codec driver
This adds support for the DA7219 audio codec with built-in advanced
accessory detect features.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
new file mode 100644
index 0000000..9459593
--- /dev/null
+++ b/sound/soc/codecs/da7219-aad.c
@@ -0,0 +1,823 @@
+/*
+ * 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/of_device.h>
+#include <linux/of_irq.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 accdet_cfg8;
+ int report = 0;
+
+ /* Lock DAPM and any Kcontrols that are affected by this test */
+ snd_soc_dapm_mutex_lock(dapm);
+ mutex_lock(&da7219->lock);
+
+ /* 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_write(codec, DA7219_HP_L_CTRL,
+ DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
+ snd_soc_write(codec, DA7219_HP_R_CTRL,
+ DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
+
+ /* Configure & start Tone Generator */
+ snd_soc_write(codec, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
+ tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ);
+ 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);
+ 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);
+
+ /* 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);
+
+ 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 to pdata conversion
+ */
+
+static enum da7219_aad_micbias_pulse_lvl
+ da7219_aad_of_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_of_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_of_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_of_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_of_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_of_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_of_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_of_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_of_to_pdata(struct snd_soc_codec *codec)
+{
+ struct device_node *np = codec->dev->of_node;
+ struct device_node *aad_np = of_find_node_by_name(np, "da7219_aad");
+ struct da7219_aad_pdata *aad_pdata;
+ const char *of_str;
+ u32 of_val32;
+
+ if (!aad_np)
+ return NULL;
+
+ aad_pdata = devm_kzalloc(codec->dev, sizeof(*aad_pdata), GFP_KERNEL);
+ if (!aad_pdata)
+ goto out;
+
+ aad_pdata->irq = irq_of_parse_and_map(np, 0);
+
+ if (of_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
+ &of_val32) >= 0)
+ aad_pdata->micbias_pulse_lvl =
+ da7219_aad_of_micbias_pulse_lvl(codec, of_val32);
+ else
+ aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
+
+ if (of_property_read_u32(aad_np, "dlg,micbias-pulse-time",
+ &of_val32) >= 0)
+ aad_pdata->micbias_pulse_time = of_val32;
+
+ if (of_property_read_u32(aad_np, "dlg,btn-cfg", &of_val32) >= 0)
+ aad_pdata->btn_cfg = da7219_aad_of_btn_cfg(codec, of_val32);
+ else
+ aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
+
+ if (of_property_read_u32(aad_np, "dlg,mic-det-thr", &of_val32) >= 0)
+ aad_pdata->mic_det_thr =
+ da7219_aad_of_mic_det_thr(codec, of_val32);
+ else
+ aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
+
+ if (of_property_read_u32(aad_np, "dlg,jack-ins-deb", &of_val32) >= 0)
+ aad_pdata->jack_ins_deb =
+ da7219_aad_of_jack_ins_deb(codec, of_val32);
+ else
+ aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
+
+ if (!of_property_read_string(aad_np, "dlg,jack-det-rate", &of_str))
+ aad_pdata->jack_det_rate =
+ da7219_aad_of_jack_det_rate(codec, of_str);
+ else
+ aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
+
+ if (of_property_read_u32(aad_np, "dlg,jack-rem-deb", &of_val32) >= 0)
+ aad_pdata->jack_rem_deb =
+ da7219_aad_of_jack_rem_deb(codec, of_val32);
+ else
+ aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
+
+ if (of_property_read_u32(aad_np, "dlg,a-d-btn-thr", &of_val32) >= 0)
+ aad_pdata->a_d_btn_thr = (u8) of_val32;
+ else
+ aad_pdata->a_d_btn_thr = 0xA;
+
+ if (of_property_read_u32(aad_np, "dlg,d-b-btn-thr", &of_val32) >= 0)
+ aad_pdata->d_b_btn_thr = (u8) of_val32;
+ else
+ aad_pdata->d_b_btn_thr = 0x16;
+
+ if (of_property_read_u32(aad_np, "dlg,b-c-btn-thr", &of_val32) >= 0)
+ aad_pdata->b_c_btn_thr = (u8) of_val32;
+ else
+ aad_pdata->b_c_btn_thr = 0x21;
+
+ if (of_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &of_val32) >= 0)
+ aad_pdata->c_mic_btn_thr = (u8) of_val32;
+ else
+ aad_pdata->c_mic_btn_thr = 0x3E;
+
+ if (of_property_read_u32(aad_np, "dlg,btn-avg", &of_val32) >= 0)
+ aad_pdata->btn_avg = da7219_aad_of_btn_avg(codec, of_val32);
+ else
+ aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
+
+ if (of_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &of_val32) >= 0)
+ aad_pdata->adc_1bit_rpt =
+ da7219_aad_of_adc_1bit_rpt(codec, of_val32);
+ else
+ aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
+
+out:
+ of_node_put(aad_np);
+
+ 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);
+ }
+}
+
+
+/*
+ * 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/platform data */
+ if ((codec->dev->of_node) && (da7219->pdata))
+ da7219->pdata->aad_pdata = da7219_aad_of_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");