From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/sound/soc/codecs/es8316.c | 398 ++++++++++++++++++++++++++++++++++++--------------------
1 files changed, 253 insertions(+), 145 deletions(-)
diff --git a/kernel/sound/soc/codecs/es8316.c b/kernel/sound/soc/codecs/es8316.c
index 702bc8e..6094590 100644
--- a/kernel/sound/soc/codecs/es8316.c
+++ b/kernel/sound/soc/codecs/es8316.c
@@ -1,33 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* es8316.c -- es8316 ALSA SoC audio driver
* Copyright Everest Semiconductor Co.,Ltd
*
* Authors: David Yang <yangxiaohua@everest-semi.com>,
* Daniel Drake <drake@endlessm.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/acpi.h>
#include <linux/clk.h>
#include <linux/delay.h>
-#include <linux/extcon.h>
-#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/mod_devicetable.h>
-#include <linux/of_gpio.h>
+#include <linux/mutex.h>
#include <linux/regmap.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
+#include <sound/jack.h>
#include "es8316.h"
-#define ES8316_EXTCON_ID EXTCON_JACK_HEADPHONE
/* In slave mode at single speed, the codec is documented as accepting 5
* MCLK/LRCK ratios, but we also add ratio 400, which is commonly used on
* Intel Cherry Trail platforms (19.2MHz MCLK, 48kHz LRCK).
@@ -38,16 +33,16 @@
};
struct es8316_priv {
+ struct mutex lock;
+ struct clk *mclk;
+ struct regmap *regmap;
+ struct snd_soc_component *component;
+ struct snd_soc_jack *jack;
+ int irq;
unsigned int sysclk;
unsigned int allowed_rates[NR_SUPPORTED_MCLK_LRCK_RATIOS];
struct snd_pcm_hw_constraint_list sysclk_constraints;
- struct clk *mclk;
-
- struct gpio_desc *gpiod_spk_ctl;
- bool muted;
- bool hp_inserted;
- struct notifier_block extcon_nb;
- int pwr_count;
+ bool jd_inverted;
};
/*
@@ -94,7 +89,7 @@
SOC_DOUBLE_TLV("Headphone Playback Volume", ES8316_CPHP_ICAL_VOL,
4, 0, 3, 1, hpout_vol_tlv),
SOC_DOUBLE_TLV("Headphone Mixer Volume", ES8316_HPMIX_VOL,
- 0, 4, 11, 0, hpmixer_gain_tlv),
+ 4, 0, 11, 0, hpmixer_gain_tlv),
SOC_ENUM("Playback Polarity", dacpol),
SOC_DOUBLE_R_TLV("DAC Playback Volume", ES8316_DAC_VOLL,
@@ -104,6 +99,7 @@
SOC_SINGLE("DAC Notch Filter Switch", ES8316_DAC_SET2, 6, 1, 0),
SOC_SINGLE("DAC Double Fs Switch", ES8316_DAC_SET2, 7, 1, 0),
SOC_SINGLE("DAC Stereo Enhancement", ES8316_DAC_SET3, 0, 7, 0),
+ SOC_SINGLE("DAC Mono Mix Switch", ES8316_DAC_SET3, 3, 1, 0),
SOC_ENUM("Capture Polarity", adcpol),
SOC_SINGLE("Mic Boost Switch", ES8316_ADC_D2SEPGA, 0, 1, 0),
@@ -169,8 +165,6 @@
"lin-rin with Boost and PGA"
};
-static const unsigned int es8316_hpmux_values[] = { 0, 1, 2, 3 };
-
static SOC_ENUM_SINGLE_DECL(es8316_left_hpmux_enum, ES8316_HPMIX_SEL,
4, es8316_hpmux_texts);
@@ -200,8 +194,6 @@
"RDATA TO LDAC, RDATA TO RDAC",
"RDATA TO LDAC, LDATA TO RDAC",
};
-
-static const unsigned int es8316_dacsrc_values[] = { 0, 1, 2, 3 };
static SOC_ENUM_SINGLE_DECL(es8316_dacsrc_mux_enum, ES8316_DAC_SET1,
6, es8316_dacsrc_texts);
@@ -368,13 +360,21 @@
{
struct snd_soc_component *component = codec_dai->component;
struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
- int i;
+ int i, ret;
int count = 0;
es8316->sysclk = freq;
- if (freq == 0)
+ if (freq == 0) {
+ es8316->sysclk_constraints.list = NULL;
+ es8316->sysclk_constraints.count = 0;
+
return 0;
+ }
+
+ ret = clk_set_rate(es8316->mclk, freq);
+ if (ret)
+ return ret;
/* Limit supported sample rates to ones that can be autodetected
* by the codec running in slave mode.
@@ -449,17 +449,10 @@
struct snd_soc_component *component = dai->component;
struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
- if (es8316->sysclk == 0) {
- dev_err(component->dev, "No sysclk provided\n");
- return -EINVAL;
- }
-
- /* The set of sample rates that can be supported depends on the
- * MCLK supplied to the CODEC.
- */
- snd_pcm_hw_constraint_list(substream->runtime, 0,
- SNDRV_PCM_HW_PARAM_RATE,
- &es8316->sysclk_constraints);
+ if (es8316->sysclk_constraints.list)
+ snd_pcm_hw_constraint_list(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_RATE,
+ &es8316->sysclk_constraints);
return 0;
}
@@ -471,11 +464,19 @@
struct snd_soc_component *component = dai->component;
struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
u8 wordlen = 0;
+ int i;
- if (!es8316->sysclk) {
- dev_err(component->dev, "No MCLK configured\n");
- return -EINVAL;
+ /* Validate supported sample rates that are autodetected from MCLK */
+ for (i = 0; i < NR_SUPPORTED_MCLK_LRCK_RATIOS; i++) {
+ const unsigned int ratio = supported_mclk_lrck_ratios[i];
+
+ if (es8316->sysclk % ratio != 0)
+ continue;
+ if (es8316->sysclk / ratio == params_rate(params))
+ break;
}
+ if (i == NR_SUPPORTED_MCLK_LRCK_RATIOS)
+ return -EINVAL;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
@@ -501,75 +502,10 @@
return 0;
}
-static void es8316_enable_spk(struct es8316_priv *es8316, bool enable)
+static int es8316_mute(struct snd_soc_dai *dai, int mute, int direction)
{
- if (!es8316 || !es8316->gpiod_spk_ctl)
- return;
- gpiod_set_value(es8316->gpiod_spk_ctl, enable);
-}
-
-static int es8316_extcon_notifier(struct notifier_block *self, unsigned long event, void *ptr)
-{
- struct es8316_priv *es8316 = container_of(self, struct es8316_priv,
- extcon_nb);
-
- if (event) {
- es8316->hp_inserted = true;
- es8316_enable_spk(es8316, false);
- } else {
- es8316->hp_inserted = false;
- }
- return NOTIFY_DONE;
-}
-
-static int es8316_mute(struct snd_soc_dai *dai, int mute)
-{
- struct snd_soc_component *component = dai->component;
- struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
- unsigned int val = mute ? 0x20 : 0;
-
- es8316->muted = mute;
- if (mute) {
- es8316_enable_spk(es8316, false);
- msleep(100);
- snd_soc_component_update_bits(dai->component, ES8316_DAC_SET1, 0x20, val);
- } else {
- snd_soc_component_update_bits(dai->component, ES8316_DAC_SET1, 0x20, val);
- msleep(130);
- if (!es8316->hp_inserted)
- es8316_enable_spk(es8316, true);
- }
- return 0;
-}
-
-static int es8316_set_bias_level(struct snd_soc_component *component,
- enum snd_soc_bias_level level)
-{
- struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
- int ret;
-
- switch (level) {
- case SND_SOC_BIAS_ON:
- break;
- case SND_SOC_BIAS_PREPARE:
- if (IS_ERR(es8316->mclk))
- break;
-
- if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_ON) {
- clk_disable_unprepare(es8316->mclk);
- } else {
- ret = clk_prepare_enable(es8316->mclk);
- if (ret)
- return ret;
- }
- break;
-
- case SND_SOC_BIAS_STANDBY:
- break;
-
- case SND_SOC_BIAS_OFF:
- break;
- }
+ snd_soc_component_update_bits(dai->component, ES8316_DAC_SET1, 0x20,
+ mute ? 0x20 : 0);
return 0;
}
@@ -581,7 +517,8 @@
.hw_params = es8316_pcm_hw_params,
.set_fmt = es8316_set_dai_fmt,
.set_sysclk = es8316_set_dai_sysclk,
- .digital_mute = es8316_mute,
+ .mute_stream = es8316_mute,
+ .no_capture_mute = 1,
};
static struct snd_soc_dai_driver es8316_dai = {
@@ -604,18 +541,189 @@
.symmetric_rates = 1,
};
+static void es8316_enable_micbias_for_mic_gnd_short_detect(
+ struct snd_soc_component *component)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
+
+ snd_soc_dapm_mutex_lock(dapm);
+ snd_soc_dapm_force_enable_pin_unlocked(dapm, "Bias");
+ snd_soc_dapm_force_enable_pin_unlocked(dapm, "Analog power");
+ snd_soc_dapm_force_enable_pin_unlocked(dapm, "Mic Bias");
+ snd_soc_dapm_sync_unlocked(dapm);
+ snd_soc_dapm_mutex_unlock(dapm);
+
+ msleep(20);
+}
+
+static void es8316_disable_micbias_for_mic_gnd_short_detect(
+ struct snd_soc_component *component)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
+
+ snd_soc_dapm_mutex_lock(dapm);
+ snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Bias");
+ snd_soc_dapm_disable_pin_unlocked(dapm, "Analog power");
+ snd_soc_dapm_disable_pin_unlocked(dapm, "Bias");
+ snd_soc_dapm_sync_unlocked(dapm);
+ snd_soc_dapm_mutex_unlock(dapm);
+}
+
+static irqreturn_t es8316_irq(int irq, void *data)
+{
+ struct es8316_priv *es8316 = data;
+ struct snd_soc_component *comp = es8316->component;
+ unsigned int flags;
+
+ mutex_lock(&es8316->lock);
+
+ regmap_read(es8316->regmap, ES8316_GPIO_FLAG, &flags);
+ if (flags == 0x00)
+ goto out; /* Powered-down / reset */
+
+ /* Catch spurious IRQ before set_jack is called */
+ if (!es8316->jack)
+ goto out;
+
+ if (es8316->jd_inverted)
+ flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
+
+ dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
+ if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
+ /* Jack removed, or spurious IRQ? */
+ if (es8316->jack->status & SND_JACK_MICROPHONE)
+ es8316_disable_micbias_for_mic_gnd_short_detect(comp);
+
+ if (es8316->jack->status & SND_JACK_HEADPHONE) {
+ snd_soc_jack_report(es8316->jack, 0,
+ SND_JACK_HEADSET | SND_JACK_BTN_0);
+ dev_dbg(comp->dev, "jack unplugged\n");
+ }
+ } else if (!(es8316->jack->status & SND_JACK_HEADPHONE)) {
+ /* Jack inserted, determine type */
+ es8316_enable_micbias_for_mic_gnd_short_detect(comp);
+ regmap_read(es8316->regmap, ES8316_GPIO_FLAG, &flags);
+ if (es8316->jd_inverted)
+ flags ^= ES8316_GPIO_FLAG_HP_NOT_INSERTED;
+ dev_dbg(comp->dev, "gpio flags %#04x\n", flags);
+ if (flags & ES8316_GPIO_FLAG_HP_NOT_INSERTED) {
+ /* Jack unplugged underneath us */
+ es8316_disable_micbias_for_mic_gnd_short_detect(comp);
+ } else if (flags & ES8316_GPIO_FLAG_GM_NOT_SHORTED) {
+ /* Open, headset */
+ snd_soc_jack_report(es8316->jack,
+ SND_JACK_HEADSET,
+ SND_JACK_HEADSET);
+ /* Keep mic-gnd-short detection on for button press */
+ } else {
+ /* Shorted, headphones */
+ snd_soc_jack_report(es8316->jack,
+ SND_JACK_HEADPHONE,
+ SND_JACK_HEADSET);
+ /* No longer need mic-gnd-short detection */
+ es8316_disable_micbias_for_mic_gnd_short_detect(comp);
+ }
+ } else if (es8316->jack->status & SND_JACK_MICROPHONE) {
+ /* Interrupt while jack inserted, report button state */
+ if (flags & ES8316_GPIO_FLAG_GM_NOT_SHORTED) {
+ /* Open, button release */
+ snd_soc_jack_report(es8316->jack, 0, SND_JACK_BTN_0);
+ } else {
+ /* Short, button press */
+ snd_soc_jack_report(es8316->jack,
+ SND_JACK_BTN_0,
+ SND_JACK_BTN_0);
+ }
+ }
+
+out:
+ mutex_unlock(&es8316->lock);
+ return IRQ_HANDLED;
+}
+
+static void es8316_enable_jack_detect(struct snd_soc_component *component,
+ struct snd_soc_jack *jack)
+{
+ struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
+
+ /*
+ * Init es8316->jd_inverted here and not in the probe, as we cannot
+ * guarantee that the bytchr-es8316 driver, which might set this
+ * property, will probe before us.
+ */
+ es8316->jd_inverted = device_property_read_bool(component->dev,
+ "everest,jack-detect-inverted");
+
+ mutex_lock(&es8316->lock);
+
+ es8316->jack = jack;
+
+ if (es8316->jack->status & SND_JACK_MICROPHONE)
+ es8316_enable_micbias_for_mic_gnd_short_detect(component);
+
+ snd_soc_component_update_bits(component, ES8316_GPIO_DEBOUNCE,
+ ES8316_GPIO_ENABLE_INTERRUPT,
+ ES8316_GPIO_ENABLE_INTERRUPT);
+
+ mutex_unlock(&es8316->lock);
+
+ /* Enable irq and sync initial jack state */
+ enable_irq(es8316->irq);
+ es8316_irq(es8316->irq, es8316);
+}
+
+static void es8316_disable_jack_detect(struct snd_soc_component *component)
+{
+ struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
+
+ disable_irq(es8316->irq);
+
+ mutex_lock(&es8316->lock);
+
+ snd_soc_component_update_bits(component, ES8316_GPIO_DEBOUNCE,
+ ES8316_GPIO_ENABLE_INTERRUPT, 0);
+
+ if (es8316->jack->status & SND_JACK_MICROPHONE) {
+ es8316_disable_micbias_for_mic_gnd_short_detect(component);
+ snd_soc_jack_report(es8316->jack, 0, SND_JACK_BTN_0);
+ }
+
+ es8316->jack = NULL;
+
+ mutex_unlock(&es8316->lock);
+}
+
+static int es8316_set_jack(struct snd_soc_component *component,
+ struct snd_soc_jack *jack, void *data)
+{
+ if (jack)
+ es8316_enable_jack_detect(component, jack);
+ else
+ es8316_disable_jack_detect(component);
+
+ return 0;
+}
+
static int es8316_probe(struct snd_soc_component *component)
{
struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component);
- int ret = 0;
+ int ret;
- es8316->mclk = devm_clk_get(component->dev, "mclk");
- if (PTR_ERR(es8316->mclk) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
+ es8316->component = component;
+
+ es8316->mclk = devm_clk_get_optional(component->dev, "mclk");
+ if (IS_ERR(es8316->mclk)) {
+ dev_err(component->dev, "unable to get mclk\n");
+ return PTR_ERR(es8316->mclk);
+ }
+ if (!es8316->mclk)
+ dev_warn(component->dev, "assuming static mclk\n");
ret = clk_prepare_enable(es8316->mclk);
- if (ret)
+ if (ret) {
+ dev_err(component->dev, "unable to enable mclk\n");
return ret;
+ }
/* Reset codec and enable current state machine */
snd_soc_component_write(component, ES8316_RESET, 0x3f);
@@ -649,7 +757,7 @@
static const struct snd_soc_component_driver soc_component_dev_es8316 = {
.probe = es8316_probe,
.remove = es8316_remove,
- .set_bias_level = es8316_set_bias_level,
+ .set_jack = es8316_set_jack,
.controls = es8316_snd_controls,
.num_controls = ARRAY_SIZE(es8316_snd_controls),
.dapm_widgets = es8316_dapm_widgets,
@@ -661,60 +769,58 @@
.non_legacy_dai_naming = 1,
};
+static const struct regmap_range es8316_volatile_ranges[] = {
+ regmap_reg_range(ES8316_GPIO_FLAG, ES8316_GPIO_FLAG),
+};
+
+static const struct regmap_access_table es8316_volatile_table = {
+ .yes_ranges = es8316_volatile_ranges,
+ .n_yes_ranges = ARRAY_SIZE(es8316_volatile_ranges),
+};
+
static const struct regmap_config es8316_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x53,
+ .volatile_table = &es8316_volatile_table,
.cache_type = REGCACHE_RBTREE,
};
static int es8316_i2c_probe(struct i2c_client *i2c_client,
const struct i2c_device_id *id)
{
+ struct device *dev = &i2c_client->dev;
struct es8316_priv *es8316;
- struct extcon_dev *edev;
- struct regmap *regmap;
- int ret = -1;
+ int ret;
es8316 = devm_kzalloc(&i2c_client->dev, sizeof(struct es8316_priv),
GFP_KERNEL);
if (es8316 == NULL)
return -ENOMEM;
- es8316->hp_inserted = false;
- es8316->muted = true;
+
i2c_set_clientdata(i2c_client, es8316);
- regmap = devm_regmap_init_i2c(i2c_client, &es8316_regmap);
- if (IS_ERR(regmap))
- return PTR_ERR(regmap);
- es8316->gpiod_spk_ctl = devm_gpiod_get_optional(&i2c_client->dev,
- "spk-con",
- GPIOD_OUT_LOW);
- if (IS_ERR(es8316->gpiod_spk_ctl)) {
- ret = IS_ERR(es8316->gpiod_spk_ctl);
- es8316->gpiod_spk_ctl = NULL;
- dev_warn(&i2c_client->dev, "cannot get spk-con-gpio %d\n", ret);
+ es8316->regmap = devm_regmap_init_i2c(i2c_client, &es8316_regmap);
+ if (IS_ERR(es8316->regmap))
+ return PTR_ERR(es8316->regmap);
+
+ es8316->irq = i2c_client->irq;
+ mutex_init(&es8316->lock);
+
+ ret = devm_request_threaded_irq(dev, es8316->irq, NULL, es8316_irq,
+ IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+ "es8316", es8316);
+ if (ret == 0) {
+ /* Gets re-enabled by es8316_set_jack() */
+ disable_irq(es8316->irq);
+ } else {
+ dev_warn(dev, "Failed to get IRQ %d: %d\n", es8316->irq, ret);
+ es8316->irq = -ENXIO;
}
- if (device_property_read_bool(&i2c_client->dev, "extcon")) {
- edev = extcon_get_edev_by_phandle(&i2c_client->dev, 0);
- if (IS_ERR(edev)) {
- if (PTR_ERR(edev) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
- dev_err(&i2c_client->dev, "Invalid or missing extcon\n");
- return PTR_ERR(edev);
- }
- es8316->extcon_nb.notifier_call = es8316_extcon_notifier;
- ret = devm_extcon_register_notifier(&i2c_client->dev, edev,
- ES8316_EXTCON_ID,
- &es8316->extcon_nb);
- if (ret < 0) {
- dev_err(&i2c_client->dev, "register notifier fail\n");
- return ret;
- }
- }
+
return devm_snd_soc_register_component(&i2c_client->dev,
- &soc_component_dev_es8316,
- &es8316_dai, 1);
+ &soc_component_dev_es8316,
+ &es8316_dai, 1);
}
static const struct i2c_device_id es8316_i2c_id[] = {
@@ -729,11 +835,13 @@
};
MODULE_DEVICE_TABLE(of, es8316_of_match);
+#ifdef CONFIG_ACPI
static const struct acpi_device_id es8316_acpi_match[] = {
{"ESSX8316", 0},
{},
};
MODULE_DEVICE_TABLE(acpi, es8316_acpi_match);
+#endif
static struct i2c_driver es8316_i2c_driver = {
.driver = {
--
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