ASoC: amd: acp: Add I2S support on Renoir platform

Add I2S dai driver for Renoir platform and register with common
acp framework to support non dsp I2S use case on Renoir.

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Link: https://lore.kernel.org/r/20211019070938.5076-3-AjitKumar.Pandey@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp/Kconfig

@@ -17,3 +17,11 @@ config SND_SOC_AMD_ACP_I2S
 
 config SND_SOC_AMD_ACP_PCM
 	tristate
+
+config SND_AMD_ASOC_RENOIR
+	tristate "AMD ACP ASOC Renoir Support"
+	select SND_SOC_AMD_ACP_PCM
+	select SND_SOC_AMD_ACP_I2S
+	depends on X86 && PCI
+	help
+	  This option enables Renoir I2S support on AMD platform.

sound/soc/amd/acp/Makefile

@@ -8,5 +8,10 @@
 snd-acp-pcm-objs     := acp-platform.o
 snd-acp-i2s-objs     := acp-i2s.o
 
+#platform specific driver
+snd-acp-renoir-objs     := acp-renoir.o
+
 obj-$(CONFIG_SND_SOC_AMD_ACP_PCM) += snd-acp-pcm.o
 obj-$(CONFIG_SND_SOC_AMD_ACP_I2S) += snd-acp-i2s.o
+
+obj-$(CONFIG_SND_AMD_ASOC_RENOIR) += snd-acp-renoir.o

sound/soc/amd/acp/acp-renoir.c

@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2021 Advanced Micro Devices, Inc.
+//
+// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
+//
+
+/*
+ * Hardware interface for Renoir ACP block
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <linux/dma-mapping.h>
+
+#include "amd.h"
+
+#define DRV_NAME "acp_asoc_renoir"
+
+static struct snd_soc_dai_driver acp_renoir_dai[] = {
+{
+	.name = "acp-i2s-sp",
+	.id = I2S_SP_INSTANCE,
+	.playback = {
+		.stream_name = "I2S SP Playback",
+		.rates = SNDRV_PCM_RATE_8000_96000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+		.channels_min = 2,
+		.channels_max = 8,
+		.rate_min = 8000,
+		.rate_max = 96000,
+	},
+	.capture = {
+		.stream_name = "I2S SP Capture",
+		.rates = SNDRV_PCM_RATE_8000_48000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+		.channels_min = 2,
+		.channels_max = 2,
+		.rate_min = 8000,
+		.rate_max = 48000,
+	},
+	.ops = &asoc_acp_cpu_dai_ops,
+	.probe = &asoc_acp_i2s_probe,
+},
+{
+	.name = "acp-i2s-bt",
+	.id = I2S_BT_INSTANCE,
+	.playback = {
+		.stream_name = "I2S BT Playback",
+		.rates = SNDRV_PCM_RATE_8000_96000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+		.channels_min = 2,
+		.channels_max = 8,
+		.rate_min = 8000,
+		.rate_max = 96000,
+	},
+	.capture = {
+		.stream_name = "I2S BT Capture",
+		.rates = SNDRV_PCM_RATE_8000_48000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+		.channels_min = 2,
+		.channels_max = 2,
+		.rate_min = 8000,
+		.rate_max = 48000,
+	},
+	.ops = &asoc_acp_cpu_dai_ops,
+	.probe = &asoc_acp_i2s_probe,
+},
+};
+
+static int renoir_audio_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct acp_dev_data *adata;
+	struct resource *res;
+
+	adata = devm_kzalloc(dev, sizeof(struct acp_dev_data), GFP_KERNEL);
+	if (!adata)
+		return -ENOMEM;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "acp_mem");
+	if (!res) {
+		dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
+		return -ENODEV;
+	}
+
+	adata->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+	if (!adata->acp_base)
+		return -ENOMEM;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "acp_dai_irq");
+	if (!res) {
+		dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");
+		return -ENODEV;
+	}
+
+	adata->i2s_irq = res->start;
+	adata->dev = dev;
+	adata->dai_driver = acp_renoir_dai;
+	adata->num_dai = ARRAY_SIZE(acp_renoir_dai);
+
+	dev_set_drvdata(dev, adata);
+	acp_platform_register(dev);
+
+	return 0;
+}
+
+static int renoir_audio_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	acp_platform_unregister(dev);
+	return 0;
+}
+
+static struct platform_driver renoir_driver = {
+	.probe = renoir_audio_probe,
+	.remove = renoir_audio_remove,
+	.driver = {
+		.name = "acp_asoc_renoir",
+	},
+};
+
+module_platform_driver(renoir_driver);
+
+MODULE_DESCRIPTION("AMD ACP Renoir Driver");
+MODULE_IMPORT_NS(SND_SOC_ACP_COMMON);
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_ALIAS("platform:" DRV_NAME);