Add initial support for i.MX8 SOF driver

include/sound/sof/dai.h

@@ -50,6 +50,8 @@ enum sof_ipc_dai_type {
 	SOF_DAI_INTEL_DMIC,		/**< Intel DMIC */
 	SOF_DAI_INTEL_HDA,		/**< Intel HD/A */
 	SOF_DAI_INTEL_SOUNDWIRE,	/**< Intel SoundWire */
+	SOF_DAI_IMX_SAI,		/**< i.MX SAI */
+	SOF_DAI_IMX_ESAI,		/**< i.MX ESAI */
 };
 
 /* general purpose DAI configuration */

include/uapi/sound/sof/tokens.h

@@ -106,4 +106,12 @@
 /* for backward compatibility */
 #define SOF_TKN_EFFECT_TYPE	SOF_TKN_PROCESS_TYPE
 
+/* SAI */
+#define SOF_TKN_IMX_SAI_FIRST_TOKEN		1000
+/* TODO: Add SAI tokens */
+
+/* ESAI */
+#define SOF_TKN_IMX_ESAI_FIRST_TOKEN		1100
+/* TODO: Add ESAI tokens */
+
 #endif

sound/soc/sof/Kconfig

@@ -36,6 +36,16 @@ config SND_SOC_SOF_ACPI
 	  Say Y if you need this option
 	  If unsure select "N".
 
+config SND_SOC_SOF_OF
+	tristate "SOF OF enumeration support"
+	depends on OF || COMPILE_TEST
+	select SND_SOC_SOF
+	select SND_SOC_SOF_OPTIONS
+	help
+	  This adds support for Device Tree enumeration. This option is
+	  required to enable i.MX8 devices.
+	  Say Y if you need this option. If unsure select "N".
+
 config SND_SOC_SOF_OPTIONS
 	tristate
 	help
@@ -171,6 +181,7 @@ config SND_SOC_SOF_PROBE_WORK_QUEUE
 	  When selected, the probe is handled in two steps, for example to
 	  avoid lockdeps if request_module is used in the probe.
 
+source "sound/soc/sof/imx/Kconfig"
 source "sound/soc/sof/intel/Kconfig"
 source "sound/soc/sof/xtensa/Kconfig"
 

sound/soc/sof/Makefile

@@ -7,14 +7,18 @@ snd-sof-objs := core.o ops.o loader.o ipc.o pcm.o pm.o debug.o topology.o\
 
 snd-sof-pci-objs := sof-pci-dev.o
 snd-sof-acpi-objs := sof-acpi-dev.o
+snd-sof-of-objs := sof-of-dev.o
+
 snd-sof-nocodec-objs := nocodec.o
 
 obj-$(CONFIG_SND_SOC_SOF) += snd-sof.o
 obj-$(CONFIG_SND_SOC_SOF_NOCODEC) += snd-sof-nocodec.o
 
 
 obj-$(CONFIG_SND_SOC_SOF_ACPI) += snd-sof-acpi.o
+obj-$(CONFIG_SND_SOC_SOF_OF) += snd-sof-of.o
 obj-$(CONFIG_SND_SOC_SOF_PCI) += snd-sof-pci.o
 
 obj-$(CONFIG_SND_SOC_SOF_INTEL_TOPLEVEL) += intel/
+obj-$(CONFIG_SND_SOC_SOF_IMX_TOPLEVEL) += imx/
 obj-$(CONFIG_SND_SOC_SOF_XTENSA) += xtensa/

sound/soc/sof/imx/Kconfig

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+
+config SND_SOC_SOF_IMX_TOPLEVEL
+	bool "SOF support for NXP i.MX audio DSPs"
+	depends on ARM64 && SND_SOC_SOF_OF || COMPILE_TEST
+	help
+          This adds support for Sound Open Firmware for NXP i.MX platforms.
+          Say Y if you have such a device.
+          If unsure select "N".
+
+if SND_SOC_SOF_IMX_TOPLEVEL
+
+config SND_SOC_SOF_IMX8
+	tristate "SOF support for i.MX8"
+	depends on IMX_SCU
+	depends on IMX_DSP
+	help
+          This adds support for Sound Open Firmware for NXP i.MX8 platforms
+          Say Y if you have such a device.
+          If unsure select "N".
+
+endif ## SND_SOC_SOF_IMX_IMX_TOPLEVEL

sound/soc/sof/imx/Makefile

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
+snd-sof-imx8-objs := imx8.o
+
+obj-$(CONFIG_SND_SOC_SOF_IMX8) += snd-sof-imx8.o