Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 183 insertions, 0 deletions

diff --git a/sound/soc/codecs/max98357a.c b/sound/soc/codecs/max98357a.c
new file mode 100644
index 0000000000..2a2b286f17
--- /dev/null
+++ b/sound/soc/codecs/max98357a.c
@@ -0,0 +1,183 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
+ *
+ * max98357a.c -- MAX98357A ALSA SoC Codec driver
+ */
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <sound/soc-dapm.h>
+
+struct max98357a_priv {
+	struct gpio_desc *sdmode;
+	unsigned int sdmode_delay;
+	int sdmode_switch;
+};
+
+static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
+		int cmd, struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct max98357a_priv *max98357a =
+		snd_soc_component_get_drvdata(component);
+
+	if (!max98357a->sdmode)
+		return 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		mdelay(max98357a->sdmode_delay);
+		if (max98357a->sdmode_switch) {
+			gpiod_set_value(max98357a->sdmode, 1);
+			dev_dbg(component->dev, "set sdmode to 1");
+		}
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		gpiod_set_value(max98357a->sdmode, 0);
+		dev_dbg(component->dev, "set sdmode to 0");
+		break;
+	}
+
+	return 0;
+}
+
+static int max98357a_sdmode_event(struct snd_soc_dapm_widget *w,
+		struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *component =
+		snd_soc_dapm_to_component(w->dapm);
+	struct max98357a_priv *max98357a =
+		snd_soc_component_get_drvdata(component);
+
+	if (event & SND_SOC_DAPM_POST_PMU)
+		max98357a->sdmode_switch = 1;
+	else if (event & SND_SOC_DAPM_POST_PMD)
+		max98357a->sdmode_switch = 0;
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
+	SND_SOC_DAPM_OUTPUT("Speaker"),
+	SND_SOC_DAPM_OUT_DRV_E("SD_MODE", SND_SOC_NOPM, 0, 0, NULL, 0,
+			max98357a_sdmode_event,
+			SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
+	{"SD_MODE", NULL, "HiFi Playback"},
+	{"Speaker", NULL, "SD_MODE"},
+};
+
+static const struct snd_soc_component_driver max98357a_component_driver = {
+	.dapm_widgets		= max98357a_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(max98357a_dapm_widgets),
+	.dapm_routes		= max98357a_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(max98357a_dapm_routes),
+	.idle_bias_on		= 1,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+};
+
+static const struct snd_soc_dai_ops max98357a_dai_ops = {
+	.trigger        = max98357a_daiops_trigger,
+};
+
+static struct snd_soc_dai_driver max98357a_dai_driver = {
+	.name = "HiFi",
+	.playback = {
+		.stream_name	= "HiFi Playback",
+		.formats	= SNDRV_PCM_FMTBIT_S16 |
+					SNDRV_PCM_FMTBIT_S24 |
+					SNDRV_PCM_FMTBIT_S32,
+		.rates		= SNDRV_PCM_RATE_8000 |
+					SNDRV_PCM_RATE_16000 |
+					SNDRV_PCM_RATE_32000 |
+					SNDRV_PCM_RATE_44100 |
+					SNDRV_PCM_RATE_48000 |
+					SNDRV_PCM_RATE_88200 |
+					SNDRV_PCM_RATE_96000,
+		.rate_min	= 8000,
+		.rate_max	= 96000,
+		.channels_min	= 1,
+		.channels_max	= 2,
+	},
+	.ops    = &max98357a_dai_ops,
+};
+
+static int max98357a_platform_probe(struct platform_device *pdev)
+{
+	struct max98357a_priv *max98357a;
+	int ret;
+
+	max98357a = devm_kzalloc(&pdev->dev, sizeof(*max98357a), GFP_KERNEL);
+	if (!max98357a)
+		return -ENOMEM;
+
+	max98357a->sdmode = devm_gpiod_get_optional(&pdev->dev,
+				"sdmode", GPIOD_OUT_LOW);
+	if (IS_ERR(max98357a->sdmode))
+		return PTR_ERR(max98357a->sdmode);
+
+	ret = device_property_read_u32(&pdev->dev, "sdmode-delay",
+					&max98357a->sdmode_delay);
+	if (ret) {
+		max98357a->sdmode_delay = 0;
+		dev_dbg(&pdev->dev,
+			"no optional property 'sdmode-delay' found, "
+			"default: no delay\n");
+	}
+
+	dev_set_drvdata(&pdev->dev, max98357a);
+
+	return devm_snd_soc_register_component(&pdev->dev,
+			&max98357a_component_driver,
+			&max98357a_dai_driver, 1);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id max98357a_device_id[] = {
+	{ .compatible = "maxim,max98357a" },
+	{ .compatible = "maxim,max98360a" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, max98357a_device_id);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id max98357a_acpi_match[] = {
+	{ "MX98357A", 0 },
+	{ "MX98360A", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, max98357a_acpi_match);
+#endif
+
+static struct platform_driver max98357a_platform_driver = {
+	.driver = {
+		.name = "max98357a",
+		.of_match_table = of_match_ptr(max98357a_device_id),
+		.acpi_match_table = ACPI_PTR(max98357a_acpi_match),
+	},
+	.probe	= max98357a_platform_probe,
+};
+module_platform_driver(max98357a_platform_driver);
+
+MODULE_DESCRIPTION("Maxim MAX98357A Codec Driver");
+MODULE_LICENSE("GPL v2");