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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /sound/soc/codecs/max98357a.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/codecs/max98357a.c')
-rw-r--r--sound/soc/codecs/max98357a.c183
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");