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-rw-r--r--sound/soc/codecs/rt1015p.c154
1 files changed, 154 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt1015p.c b/sound/soc/codecs/rt1015p.c
new file mode 100644
index 0000000000..44e7fe3c32
--- /dev/null
+++ b/sound/soc/codecs/rt1015p.c
@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// rt1015p.c -- RT1015P ALSA SoC audio amplifier driver
+//
+// Copyright 2020 The Linux Foundation. All rights reserved.
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.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 rt1015p_priv {
+ struct gpio_desc *sdb;
+ bool calib_done;
+};
+
+static int rt1015p_sdb_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 rt1015p_priv *rt1015p =
+ snd_soc_component_get_drvdata(component);
+
+ if (!rt1015p->sdb)
+ return 0;
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ gpiod_set_value_cansleep(rt1015p->sdb, 1);
+ dev_dbg(component->dev, "set sdb to 1");
+
+ if (!rt1015p->calib_done) {
+ msleep(300);
+ rt1015p->calib_done = true;
+ }
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ gpiod_set_value_cansleep(rt1015p->sdb, 0);
+ dev_dbg(component->dev, "set sdb to 0");
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget rt1015p_dapm_widgets[] = {
+ SND_SOC_DAPM_OUTPUT("Speaker"),
+ SND_SOC_DAPM_OUT_DRV_E("SDB", SND_SOC_NOPM, 0, 0, NULL, 0,
+ rt1015p_sdb_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route rt1015p_dapm_routes[] = {
+ {"SDB", NULL, "HiFi Playback"},
+ {"Speaker", NULL, "SDB"},
+};
+
+#ifdef CONFIG_PM
+static int rt1015p_suspend(struct snd_soc_component *component)
+{
+ struct rt1015p_priv *rt1015p = snd_soc_component_get_drvdata(component);
+
+ rt1015p->calib_done = false;
+ return 0;
+}
+#else
+#define rt1015p_suspend NULL
+#endif
+
+static const struct snd_soc_component_driver rt1015p_component_driver = {
+ .suspend = rt1015p_suspend,
+ .dapm_widgets = rt1015p_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(rt1015p_dapm_widgets),
+ .dapm_routes = rt1015p_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(rt1015p_dapm_routes),
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+static struct snd_soc_dai_driver rt1015p_dai_driver = {
+ .name = "HiFi",
+ .playback = {
+ .stream_name = "HiFi Playback",
+ .formats = SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ },
+};
+
+static int rt1015p_platform_probe(struct platform_device *pdev)
+{
+ struct rt1015p_priv *rt1015p;
+
+ rt1015p = devm_kzalloc(&pdev->dev, sizeof(*rt1015p), GFP_KERNEL);
+ if (!rt1015p)
+ return -ENOMEM;
+
+ rt1015p->sdb = devm_gpiod_get_optional(&pdev->dev,
+ "sdb", GPIOD_OUT_LOW);
+ if (IS_ERR(rt1015p->sdb))
+ return PTR_ERR(rt1015p->sdb);
+
+ dev_set_drvdata(&pdev->dev, rt1015p);
+
+ return devm_snd_soc_register_component(&pdev->dev,
+ &rt1015p_component_driver,
+ &rt1015p_dai_driver, 1);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id rt1015p_device_id[] = {
+ { .compatible = "realtek,rt1015p" },
+ { .compatible = "realtek,rt1019p" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, rt1015p_device_id);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id rt1015p_acpi_match[] = {
+ { "RTL1015", 0},
+ { "RTL1019", 0},
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, rt1015p_acpi_match);
+#endif
+
+static struct platform_driver rt1015p_platform_driver = {
+ .driver = {
+ .name = "rt1015p",
+ .of_match_table = of_match_ptr(rt1015p_device_id),
+ .acpi_match_table = ACPI_PTR(rt1015p_acpi_match),
+ },
+ .probe = rt1015p_platform_probe,
+};
+module_platform_driver(rt1015p_platform_driver);
+
+MODULE_DESCRIPTION("ASoC RT1015P driver");
+MODULE_LICENSE("GPL v2");