[PATCH v2 13/14] ASoC: amd: RN machine driver using dmic

[Alex Deucher]

From: Vijendar Mukunda <Vijendar.Mukunda at amd.com>

This patch adds Renoir Machine driver for dmic support.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---

v2:
- Removed redundant code

 sound/soc/amd/renoir/acp3x-rn.c | 106 ++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 sound/soc/amd/renoir/acp3x-rn.c

diff --git a/sound/soc/amd/renoir/acp3x-rn.c b/sound/soc/amd/renoir/acp3x-rn.c
new file mode 100644
index 000000000000..069714035e95
--- /dev/null
+++ b/sound/soc/amd/renoir/acp3x-rn.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Machine driver for AMD Renoir platform using DMIC
+//
+//Copyright 2020 Advanced Micro Devices, Inc.
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <linux/io.h>
+
+#include "rn_acp3x.h"
+
+#define DRV_NAME "acp_pdm_mach"
+
+static int acp_pdm_hw_params(struct snd_pcm_substream *substream,
+			     struct snd_pcm_hw_params *hw_params)
+{
+	return 0;
+}
+
+static struct snd_soc_ops acp_pdm_ops = {
+	.hw_params = acp_pdm_hw_params,
+};
+
+static int acp_init(struct snd_soc_pcm_runtime *rtd)
+{
+	return 0;
+}
+
+SND_SOC_DAILINK_DEF(acp_pdm,
+		    DAILINK_COMP_ARRAY(COMP_CPU("acp_rn_pdm_dma.0")));
+
+SND_SOC_DAILINK_DEF(dmic_codec,
+		    DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec.0",
+						  "dmic-hifi")));
+
+SND_SOC_DAILINK_DEF(platform,
+		    DAILINK_COMP_ARRAY(COMP_PLATFORM("acp_rn_pdm_dma.0")));
+
+static struct snd_soc_dai_link acp_dai_pdm[] = {
+	{
+		.name = "acp3x-dmic-capture",
+		.stream_name = "DMIC capture",
+		.ops = &acp_pdm_ops,
+		.init = acp_init,
+		.capture_only = 1,
+		SND_SOC_DAILINK_REG(acp_pdm, dmic_codec, platform),
+	},
+};
+
+static struct snd_soc_card acp_card = {
+	.name = "acp",
+	.owner = THIS_MODULE,
+	.dai_link = acp_dai_pdm,
+	.num_links = 1,
+};
+
+static int acp_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct acp_pdm *machine = NULL;
+	struct snd_soc_card *card;
+
+	card = &acp_card;
+	acp_card.dev = &pdev->dev;
+
+	platform_set_drvdata(pdev, card);
+	snd_soc_card_set_drvdata(card, machine);
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"snd_soc_register_card(%s) failed: %d\n",
+			acp_card.name, ret);
+		return ret;
+	}
+	return 0;
+}
+
+static struct platform_driver acp_mach_driver = {
+	.driver = {
+		.name = "acp_pdm_mach",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = acp_probe,
+};
+
+static int __init acp_audio_init(void)
+{
+	platform_driver_register(&acp_mach_driver);
+	return 0;
+}
+
+static void __exit acp_audio_exit(void)
+{
+	platform_driver_unregister(&acp_mach_driver);
+}
+
+module_init(acp_audio_init);
+module_exit(acp_audio_exit);
+
+MODULE_AUTHOR("Vijendar.Mukunda at amd.com");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
-- 
2.25.4