ASoC: amd: acp: Add callback for machine driver on ACP

Add method to select and register machine driver for acp platform
based on ACPI ID.

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Link: https://lore.kernel.org/r/20211019070938.5076-4-AjitKumar.Pandey@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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

@@ -67,6 +67,27 @@ static const struct snd_pcm_hardware acp_pcm_hardware_capture = {
 	.periods_max = CAPTURE_MAX_NUM_PERIODS,
 };
 
+int acp_machine_select(struct acp_dev_data *adata)
+{
+	struct snd_soc_acpi_mach *mach;
+	int size;
+
+	size = sizeof(*adata->machines);
+	mach = snd_soc_acpi_find_machine(adata->machines);
+	if (!mach) {
+		dev_err(adata->dev, "warning: No matching ASoC machine driver found\n");
+		return -EINVAL;
+	}
+
+	adata->mach_dev = platform_device_register_data(adata->dev, mach->drv_name,
+							PLATFORM_DEVID_NONE, mach, size);
+	if (!adata->mach_dev)
+		dev_warn(adata->dev, "Unable to register Machine device\n");
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(acp_machine_select, SND_SOC_ACP_COMMON);
+
 static irqreturn_t i2s_irq_handler(int irq, void *data)
 {
 	struct acp_dev_data *adata = data;
@@ -283,6 +304,8 @@ int acp_platform_unregister(struct device *dev)
 {
 	struct acp_dev_data *adata = dev_get_drvdata(dev);
 
+	if (adata->mach_dev)
+		platform_device_unregister(adata->mach_dev);
 	return 0;
 }
 EXPORT_SYMBOL_NS_GPL(acp_platform_unregister, SND_SOC_ACP_COMMON);

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

@@ -111,6 +111,9 @@ static int renoir_audio_probe(struct platform_device *pdev)
 	adata->dai_driver = acp_renoir_dai;
 	adata->num_dai = ARRAY_SIZE(acp_renoir_dai);
 
+	adata->machines = snd_soc_acpi_amd_acp_machines;
+	acp_machine_select(adata);
+
 	dev_set_drvdata(dev, adata);
 	acp_platform_register(dev);
 

sound/soc/amd/acp/amd.h

@@ -90,6 +90,9 @@ struct acp_dev_data {
 	int num_dai;
 
 	struct acp_stream *stream[ACP_MAX_STREAM];
+
+	struct snd_soc_acpi_mach *machines;
+	struct platform_device *mach_dev;
 };
 
 extern const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops;
@@ -98,6 +101,9 @@ int asoc_acp_i2s_probe(struct snd_soc_dai *dai);
 int acp_platform_register(struct device *dev);
 int acp_platform_unregister(struct device *dev);
 
+int acp_machine_select(struct acp_dev_data *adata);
+extern struct snd_soc_acpi_mach snd_soc_acpi_amd_acp_machines[];
+
 static inline u64 acp_get_byte_count(struct acp_dev_data *adata, int dai_id, int direction)
 {
 	u64 byte_count, low = 0, high = 0;