soc/amd/block/acp: add SSDT generation callback into SoC code

Some SoCs require adding SoC-specific methods to the ACP's SSDT entry.
In order to not add SoC-specific code to the common ACP code, add the
'acp_soc_write_ssdt_entry' callback into the SoC-specific code and guard
it via the 'SOC_AMD_COMMON_BLOCK_ACP_SOC_SPECIFIC_SSDT_ENTRY' Kconfig
symbol to neither need weak functions or stubs in every SoC code.

Change-Id: I0ca5272d28938c8b90b645884a0d8b306a77d473
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86465
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

src/soc/amd/common/block/acp/Kconfig

@@ -11,3 +11,9 @@ config SOC_AMD_COMMON_BLOCK_ACP_GEN2
 	help
 	  Select this option to perform Audio Co-Processor(ACP) configuration.
 	  Used by the ACP in AMD mendocino (family 17h) and possibly newer CPUs.
+
+config SOC_AMD_COMMON_BLOCK_ACP_SOC_SPECIFIC_SSDT_ENTRY
+	bool
+	help
+	  Select this option to call into the SoC code when generating the SSDT
+	  entry for the Audio Co-Processor (ACP).

src/soc/amd/common/block/acp/acp.c

@@ -39,6 +39,8 @@ static void acp_fill_ssdt(const struct device *dev)
 {
 	acpi_device_write_pci_dev(dev);
 	acp_fill_wov_method(dev);
+	if (CONFIG(SOC_AMD_COMMON_BLOCK_ACP_SOC_SPECIFIC_SSDT_ENTRY))
+		acp_soc_write_ssdt_entry(dev);
 }
 
 struct device_operations amd_acp_ops = {

src/soc/amd/common/block/include/amdblocks/acp.h

@@ -3,6 +3,7 @@
 #ifndef AMD_COMMON_ACP_H
 #define AMD_COMMON_ACP_H
 
+#include <device/device.h>
 #include <types.h>
 
 struct acp_config {
@@ -44,4 +45,6 @@ struct acp_config {
 	bool dmic_present;
 };
 
+void acp_soc_write_ssdt_entry(const struct device *dev);
+
 #endif /* AMD_COMMON_ACP_H */