[PATCH] ASoC: codecs: add support for ES8326
Pierre-Louis Bossart
pierre-louis.bossart at linux.intel.com
Fri Jul 15 15:05:42 CEST 2022
On 7/15/22 00:41, Zhu Ning wrote:
> The ES8326 codec is not compatible with ES8316 and requires a dedicated driver.
>
> Signed-off-by: David Yang <yangxiaohua at everest-semi.com>
> Signed-off-by: Zhu Ning <zhuning at everest-semi.com>
> ---
It's helpful for reviewers when you use the -v option in git
format-patch, and a change history below the --- mark also helps
understand what has been modified between versions. Thanks!
> sound/soc/codecs/Kconfig | 5 +
> sound/soc/codecs/Makefile | 2 +
> sound/soc/codecs/es8326.c | 794 ++++++++++++++++++++++++++++++++++++++
> sound/soc/codecs/es8326.h | 187 +++++++++
> 4 files changed, 988 insertions(+)
> mode change 100644 => 100755 sound/soc/codecs/Kconfig
> mode change 100644 => 100755 sound/soc/codecs/Makefile
> create mode 100755 sound/soc/codecs/es8326.c
> create mode 100755 sound/soc/codecs/es8326.h
> +#define es8326_RATES SNDRV_PCM_RATE_8000_96000
this definition omits 24 kHz, you may want to add it explicitly.
> +
> +#define es8326_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
> + SNDRV_PCM_FMTBIT_S24_LE)
> +
> +static const struct snd_soc_dai_ops es8326_ops = {
> + .hw_params = es8326_pcm_hw_params,
> + .set_fmt = es8326_set_dai_fmt,
> + .set_sysclk = es8326_set_dai_sysclk,
> +};
> +
> +static struct snd_soc_dai_driver es8326_dai = {
> + .name = "ES8326 HiFi",
> + .playback = {
> + .stream_name = "Playback",
> + .channels_min = 1,
> + .channels_max = 2,
> + .rates = es8326_RATES,
> + .formats = es8326_FORMATS,
> + },
> + .capture = {
> + .stream_name = "Capture",
> + .channels_min = 1,
> + .channels_max = 2,
> + .rates = es8326_RATES,
> + .formats = es8326_FORMATS,
> + },
> + .ops = &es8326_ops,
> + .symmetric_rate = 1,
> +};
> +
> +static void es8326_enable_micbias(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, "MICBIAS1");
> + snd_soc_dapm_force_enable_pin_unlocked(dapm, "MICBIAS2");
> + snd_soc_dapm_sync_unlocked(dapm);
> + snd_soc_dapm_mutex_unlock(dapm);
> +}
> +
> +static void es8326_disable_micbias(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, "MICBIAS1");
> + snd_soc_dapm_disable_pin_unlocked(dapm, "MICBIAS2");
> + snd_soc_dapm_sync_unlocked(dapm);
> + snd_soc_dapm_mutex_unlock(dapm);
> +}
> +static void es8326_jack_detect_handler(struct work_struct *work)
> +{
> + struct es8326_priv *es8326 =
> + container_of(work, struct es8326_priv, jack_detect_work.work);
> + struct snd_soc_component *comp = es8326->component;
> + unsigned int iface;
> +
> + iface = snd_soc_component_read(comp, ES8326_HP_DETECT_FB);
> + dev_dbg(comp->dev, "gpio flag %#04x", iface);
> + if ((iface & ES8326_HPINSERT_FLAG) == 0) {
> + dev_dbg(comp->dev, "No headset detected");
> + snd_soc_jack_report(es8326->jack, 0, SND_JACK_HEADSET);
> + snd_soc_component_write(comp, ES8326_ADC1_SRC_2A, es8326->mic2_src);
> + es8326_disable_micbias(comp);
> + } else if ((iface & ES8326_HPINSERT_FLAG) == ES8326_HPINSERT_FLAG) {
> + if ((iface & ES8326_HPBUTTON_FLAG) == 0x00) {
> + dev_dbg(comp->dev, "Headset detected");
> + snd_soc_jack_report(es8326->jack, SND_JACK_HEADSET, SND_JACK_HEADSET);
> + snd_soc_component_write(comp, ES8326_ADC1_SRC_2A, es8326->mic1_src);
> + } else {
> + dev_dbg(comp->dev, "Headphone detected");
> + snd_soc_jack_report(es8326->jack, SND_JACK_HEADPHONE, SND_JACK_HEADSET);
> + }
> + }
> +}
> +
> +static irqreturn_t es8326_irq(int irq, void *dev_id)
> +{
> + struct es8326_priv *es8326 = dev_id;
> + struct snd_soc_component *comp = es8326->component;
> +
> + if(!es8326->jack)
> + goto out;
> + es8326_enable_micbias(comp);
> +
> + queue_delayed_work(system_wq, &es8326->jack_detect_work,
> + msecs_to_jiffies(300));
> +
> +out:
> + return IRQ_HANDLED;
> +}
> +
> +static int es8326_resume(struct snd_soc_component *component)
> +{
> + struct es8326_priv *es8326 = snd_soc_component_get_drvdata(component);
> +
> + regmap_write(es8326->regmap, ES8326_CLK_CTL_01, ES8326_CLK_ON);
> + /* Two channel ADC */
> + regmap_write(es8326->regmap, ES8326_PULLUP_CTL_F9, 0x02);
> + regmap_write(es8326->regmap, ES8326_CLK_INV_02, 0x00);
> + regmap_write(es8326->regmap, ES8326_CLK_DIV_CPC_0C, 0x1F);
> + regmap_write(es8326->regmap, ES8326_CLK_VMIDS1_10, 0xC8);
> + regmap_write(es8326->regmap, ES8326_CLK_VMIDS2_11, 0x88);
> + regmap_write(es8326->regmap, ES8326_CLK_CAL_TIME_12, 0x20);
> + regmap_write(es8326->regmap, ES8326_SYS_BIAS_1D, 0x08);
> + regmap_write(es8326->regmap, ES8326_DAC2HPMIX_25, 0x22);
> + regmap_write(es8326->regmap, ES8326_ADC1_SRC_2A, es8326->mic1_src);
> + regmap_write(es8326->regmap, ES8326_ADC2_SRC_2B, es8326->mic2_src);
> + regmap_write(es8326->regmap, ES8326_HPJACK_TIMER_56, 0x88);
> + regmap_write(es8326->regmap, ES8326_HP_DET_57,
> + ES8326_HP_DET_SRC_PIN9 | es8326->jack_pol);
> + regmap_write(es8326->regmap, ES8326_INT_SOURCE_58, 0x08);
> + regmap_write(es8326->regmap, ES8326_INTOUT_IO_59, 0x45);
> + regmap_write(es8326->regmap, ES8326_RESET_00, ES8326_CSM_ON);
> + snd_soc_component_update_bits(component, ES8326_PGAGAIN_23,
> + ES8326_MIC_SEL_MASK, ES8326_MIC1_SEL);
> +
> + es8326_irq(es8326->irq, es8326);
> + return 0;
> +}
> +
> +static int es8326_suspend(struct snd_soc_component *component)
> +{
> + struct es8326_priv *es8326 = snd_soc_component_get_drvdata(component);
> +
> + regmap_write(es8326->regmap, ES8326_CLK_CTL_01, ES8326_CLK_OFF);
For symmetry with the resume case, aren't you missing
es8326_disable_micbias(comp);
cancel_delayed_work_sync(&es8326->jack_detect_work);
> + return 0;
> +}
> +
> +static void es8326_enable_jack_detect(struct snd_soc_component *component,
> + struct snd_soc_jack *jack)
> +{
> + struct es8326_priv *es8326 = snd_soc_component_get_drvdata(component);
> +
> + mutex_lock(&es8326->lock);
> + if (es8326->jd_inverted)
> + snd_soc_component_update_bits(component, ES8326_HP_DET_57,
> + ES8326_HP_DET_JACK_POL, ~es8326->jack_pol);
> + es8326->jack = jack;
> +
> + mutex_unlock(&es8326->lock);
> + es8326_irq(es8326->irq, es8326);
> +}
> +
> +static void es8326_disable_jack_detect(struct snd_soc_component *component)
> +{
> + struct es8326_priv *es8326 = snd_soc_component_get_drvdata(component);
> +
> + dev_dbg(component->dev, "Enter into %s\n", __func__);
> + if (!es8326->jack)
> + return; /* Already disabled (or never enabled) */
> +
> + cancel_delayed_work_sync(&es8326->jack_detect_work);
> +
> + mutex_lock(&es8326->lock);
> + if (es8326->jack->status & SND_JACK_MICROPHONE)
> + snd_soc_jack_report(es8326->jack, 0, SND_JACK_BTN_0);
This one is odd, you don't handle buttons anywhere in this patch but here?
> +
> + es8326->jack = NULL;
> + mutex_unlock(&es8326->lock);
> +}
> +
> +static int es8326_i2c_probe(struct i2c_client *i2c,
> + const struct i2c_device_id *id)
> +{
> + struct es8326_priv *es8326;
> + int ret;
> +
> + es8326 = devm_kzalloc(&i2c->dev, sizeof(struct es8326_priv), GFP_KERNEL);
> + if (!es8326)
> + return -ENOMEM;
> +
> + i2c_set_clientdata(i2c, es8326);
> + es8326->i2c = i2c;
> + mutex_init(&es8326->lock);
> + es8326->regmap = devm_regmap_init_i2c(i2c, &es8326_regmap_config);
> + if (IS_ERR(es8326->regmap)) {
> + ret = PTR_ERR(es8326->regmap);
> + dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
> + return ret;
> + }
> +
> + es8326->irq = i2c->irq;
> + /* ES8316 is level-based while ES8326 is edge-based */
> + ret = devm_request_threaded_irq(&i2c->dev, es8326->irq, NULL, es8326_irq,
> + IRQF_TRIGGER_RISING | IRQF_ONESHOT,
> + "es8326", es8326);
> + if (ret)
> + dev_err(&i2c->dev, "Failed to reguest IRQ: %d\n", ret);
> + INIT_DELAYED_WORK(&es8326->jack_detect_work,
> + es8326_jack_detect_handler);
Something's weird here, either you are missing a return ret;, a newline
or both. This doesn't seem right.
> +
> + es8326->mclk = devm_clk_get_optional(&i2c->dev, "mclk");
> + if (IS_ERR(es8326->mclk)) {
> + dev_err(&i2c->dev, "unable to get mclk\n");
> + return PTR_ERR(es8326->mclk);
> + }
> + if (!es8326->mclk)
> + dev_warn(&i2c->dev, "assuming static mclk\n");
> +
> + ret = clk_prepare_enable(es8326->mclk);
> + if (ret) {
> + dev_err(&i2c->dev, "unable to enable mclk\n");
> + return ret;
> + }
> + return devm_snd_soc_register_component(&i2c->dev,
> + &soc_component_dev_es8326,
> + &es8326_dai, 1);
> +}
I am also wondering if on remove you'd need to do the same thing as on
suspend (disable the mic bias and cancel the workqueue)?
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