[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/sound/soc/codecs/ssm2305.c b/src/kernel/linux/v4.19/sound/soc/codecs/ssm2305.c
new file mode 100644
index 0000000..2968959
--- /dev/null
+++ b/src/kernel/linux/v4.19/sound/soc/codecs/ssm2305.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Analog Devices SSM2305 Amplifier Driver
+//
+// Copyright (C) 2018 Pengutronix, Marco Felsch <kernel@pengutronix.de>
+//
+
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+
+#define DRV_NAME "ssm2305"
+
+struct ssm2305 {
+ /* shutdown gpio */
+ struct gpio_desc *gpiod_shutdown;
+};
+
+static int ssm2305_power_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kctrl, int event)
+{
+ struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
+ struct ssm2305 *data = snd_soc_component_get_drvdata(c);
+
+ gpiod_set_value_cansleep(data->gpiod_shutdown,
+ SND_SOC_DAPM_EVENT_ON(event));
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget ssm2305_dapm_widgets[] = {
+ /* Stereo input/output */
+ SND_SOC_DAPM_INPUT("L_IN"),
+ SND_SOC_DAPM_INPUT("R_IN"),
+ SND_SOC_DAPM_OUTPUT("L_OUT"),
+ SND_SOC_DAPM_OUTPUT("R_OUT"),
+
+ SND_SOC_DAPM_SUPPLY("Power", SND_SOC_NOPM, 0, 0, ssm2305_power_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route ssm2305_dapm_routes[] = {
+ { "L_OUT", NULL, "L_IN" },
+ { "R_OUT", NULL, "R_IN" },
+ { "L_IN", NULL, "Power" },
+ { "R_IN", NULL, "Power" },
+};
+
+static const struct snd_soc_component_driver ssm2305_component_driver = {
+ .dapm_widgets = ssm2305_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(ssm2305_dapm_widgets),
+ .dapm_routes = ssm2305_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(ssm2305_dapm_routes),
+};
+
+static int ssm2305_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct ssm2305 *priv;
+ int err;
+
+ /* Allocate the private data */
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+
+ /* Get shutdown gpio */
+ priv->gpiod_shutdown = devm_gpiod_get(dev, "shutdown",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(priv->gpiod_shutdown)) {
+ err = PTR_ERR(priv->gpiod_shutdown);
+ if (err != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get 'shutdown' gpio: %d\n",
+ err);
+ return err;
+ }
+
+ return devm_snd_soc_register_component(dev, &ssm2305_component_driver,
+ NULL, 0);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id ssm2305_of_match[] = {
+ { .compatible = "adi,ssm2305", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ssm2305_of_match);
+#endif
+
+static struct platform_driver ssm2305_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = of_match_ptr(ssm2305_of_match),
+ },
+ .probe = ssm2305_probe,
+};
+
+module_platform_driver(ssm2305_driver);
+
+MODULE_DESCRIPTION("ASoC SSM2305 amplifier driver");
+MODULE_AUTHOR("Marco Felsch <m.felsch@pengutronix.de>");
+MODULE_LICENSE("GPL v2");