[PATCH v1 04/10] ASoC: tegra: Support RT5631 by machine driver

Svyatoslav Ryhel
2023-02-21T18:32:44Z

Add Realtek ALC5631/RT5631 codec support to the Tegra ASoC machine driver.
The RT5631 codec is found on devices like ASUS Transformer TF201, TF700T
and other Tegra-based Android tablets.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Ion Agorria <ion@agorria.com>
---
sound/soc/tegra/Kconfig | 9 ++++
sound/soc/tegra/tegra_asoc_machine.c | 74 ++++++++++++++++++++++++++++
2 files changed, 83 insertions(+)

diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index b6712a3d1fa1..ff905e5dcd86 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -189,6 +189,15 @@ config SND_SOC_TEGRA_AUDIO_GRAPH_CARD
config SND_SOC_TEGRA_MACHINE_DRV
tristate

+config SND_SOC_TEGRA_RT5631
+ tristate "SoC Audio support for Tegra boards using an RT5631 codec"
+ depends on SND_SOC_TEGRA && I2C && GPIOLIB
+ select SND_SOC_TEGRA_MACHINE_DRV
+ select SND_SOC_RT5631
+ help
+ Say Y or M here if you want to add support for SoC audio on Tegra
+ boards using the RT5631 codec, such as Transformer.
+
config SND_SOC_TEGRA_RT5640
tristate "SoC Audio support for Tegra boards using an RT5640 codec"
depends on I2C && GPIOLIB
diff --git a/sound/soc/tegra/tegra_asoc_machine.c b/sound/soc/tegra/tegra_asoc_machine.c
index 78faa8bcae27..607800ec07a6 100644
--- a/sound/soc/tegra/tegra_asoc_machine.c
+++ b/sound/soc/tegra/tegra_asoc_machine.c
@@ -51,6 +51,17 @@ static struct snd_soc_jack_gpio tegra_machine_headset_jack_gpio = {
};

/* Mic Jack */
+static int headset_check(void *data)
+{
+ struct tegra_machine *machine = (struct tegra_machine *)data;
+
+ /* Detect mic insertion only if 3.5 jack is in */
+ if (gpiod_get_value_cansleep(machine->gpiod_hp_det) &&
+ gpiod_get_value_cansleep(machine->gpiod_mic_det))
+ return SND_JACK_MICROPHONE;
+
+ return 0;
+}

static struct snd_soc_jack tegra_machine_mic_jack;

@@ -183,8 +194,15 @@ int tegra_asoc_machine_init(struct snd_soc_pcm_runtime *rtd)
return err;
}

+ tegra_machine_mic_jack_gpio.data = machine;
tegra_machine_mic_jack_gpio.desc = machine->gpiod_mic_det;

+ if (of_property_read_bool(card->dev->of_node,
+ "nvidia,coupled-mic-hp-det")) {
+ tegra_machine_mic_jack_gpio.desc = machine->gpiod_hp_det;
+ tegra_machine_mic_jack_gpio.jack_status_check = headset_check;
+ };
+
err = snd_soc_jack_add_gpios(&tegra_machine_mic_jack, 1,
&tegra_machine_mic_jack_gpio);
if (err)
@@ -238,6 +256,27 @@ static unsigned int tegra_machine_mclk_rate_12mhz(unsigned int srate)
return mclk;
}

+static unsigned int tegra_machine_mclk_rate_6mhz(unsigned int srate)
+{
+ unsigned int mclk;
+
+ switch (srate) {
+ case 64000:
+ case 88200:
+ case 96000:
+ mclk = 128 * srate;
+ break;
+ default:
+ mclk = 256 * srate;
+ break;
+ }
+ /* FIXME: Codec only requires >= 3MHz if OSR==0 */
+ while (mclk < 6000000)
+ mclk *= 2;
+
+ return mclk;
+}
+
static int tegra_machine_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
@@ -865,6 +904,40 @@ static const struct tegra_asoc_data tegra_rt5632_data = {
.add_headset_jack = true,
};

+/* RT5631 machine */
+
+SND_SOC_DAILINK_DEFS(rt5631_hifi,
+ DAILINK_COMP_ARRAY(COMP_EMPTY()),
+ DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5631-hifi")),
+ DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link tegra_rt5631_dai = {
+ .name = "RT5631",
+ .stream_name = "RT5631 PCM",
+ .init = tegra_asoc_machine_init,
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ SND_SOC_DAILINK_REG(rt5631_hifi),
+};
+
+static struct snd_soc_card snd_soc_tegra_rt5631 = {
+ .components = "codec:rt5631",
+ .dai_link = &tegra_rt5631_dai,
+ .num_links = 1,
+ .fully_routed = true,
+};
+
+static const struct tegra_asoc_data tegra_rt5631_data = {
+ .mclk_rate = tegra_machine_mclk_rate_6mhz,
+ .card = &snd_soc_tegra_rt5631,
+ .add_common_dapm_widgets = true,
+ .add_common_controls = true,
+ .add_common_snd_ops = true,
+ .add_mic_jack = true,
+ .add_hp_jack = true,
+};
+
static const struct of_device_id tegra_machine_of_match[] = {
{ .compatible = "nvidia,tegra-audio-trimslice", .data = &tegra_trimslice_data },
{ .compatible = "nvidia,tegra-audio-max98090", .data = &tegra_max98090_data },
@@ -874,6 +947,7 @@ static const struct of_device_id tegra_machine_of_match[] = {
{ .compatible = "nvidia,tegra-audio-rt5677", .data = &tegra_rt5677_data },
{ .compatible = "nvidia,tegra-audio-rt5640", .data = &tegra_rt5640_data },
{ .compatible = "nvidia,tegra-audio-alc5632", .data = &tegra_rt5632_data },
+ { .compatible = "nvidia,tegra-audio-rt5631", .data = &tegra_rt5631_data },
{},
};
MODULE_DEVICE_TABLE(of, tegra_machine_of_match);
--
2.37.2