drivers: i2s: Add dummy driver for vnd,i2s

Add dummy driver for "vnd,i2s" to use in build_all tests.

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

drivers/i2s/CMakeLists.txt

@@ -13,3 +13,4 @@ zephyr_library_sources_ifdef(CONFIG_I2S_MCUX_FLEXCOMM	i2s_mcux_flexcomm.c)
 zephyr_library_sources_ifdef(CONFIG_I2S_NRFX		i2s_nrfx.c)
 zephyr_library_sources_ifdef(CONFIG_I2S_MCUX_SAI	i2s_mcux_sai.c)
 zephyr_library_sources_ifdef(CONFIG_I2S_ESP32		i2s_esp32.c)
+zephyr_library_sources_ifdef(CONFIG_I2S_TEST		i2s_test.c)

drivers/i2s/Kconfig.test

@@ -0,0 +1,6 @@
+# Copyright (c) 2024 TOKITA Hiroshi
+# SPDX-License-Identifier: Apache-2.0
+
+config I2S_TEST
+	def_bool DT_HAS_VND_I2S_ENABLED
+	depends on DT_HAS_VND_I2S_ENABLED

drivers/i2s/i2s_test.c

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2024 TOKITA Hiroshi
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#define DT_DRV_COMPAT vnd_i2s
+
+#include <zephyr/kernel.h>
+#include <zephyr/drivers/i2s.h>
+
+static int vnd_i2s_configure(const struct device *dev, enum i2s_dir dir,
+			     const struct i2s_config *i2s_cfg)
+{
+	return -ENOTSUP;
+}
+
+static const struct i2s_config *vnd_i2s_config_get(const struct device *dev, enum i2s_dir dir)
+{
+	return NULL;
+}
+
+static int vnd_i2s_trigger(const struct device *dev, enum i2s_dir dir, enum i2s_trigger_cmd cmd)
+{
+	return -ENOTSUP;
+}
+
+static int vnd_i2s_read(const struct device *dev, void **mem_block, size_t *size)
+{
+	return -ENOTSUP;
+}
+
+static int vnd_i2s_write(const struct device *dev, void *mem_block, size_t size)
+{
+	return -ENOTSUP;
+}
+
+static const struct i2s_driver_api vnd_i2s_driver_api = {
+	.configure = vnd_i2s_configure,
+	.config_get = vnd_i2s_config_get,
+	.trigger = vnd_i2s_trigger,
+	.read = vnd_i2s_read,
+	.write = vnd_i2s_write,
+};
+
+static int vnd_i2s_init(const struct device *dev)
+{
+	return 0;
+}
+
+#define VND_I2S_INIT(index)                                                                        \
+	DEVICE_DT_INST_DEFINE(index, &vnd_i2s_init, NULL, NULL, NULL, POST_KERNEL,                 \
+			      CONFIG_I2S_INIT_PRIORITY, &vnd_i2s_driver_api);
+
+DT_INST_FOREACH_STATUS_OKAY(VND_I2S_INIT)

dts/bindings/test/vnd,i2s.yaml

@@ -0,0 +1,8 @@
+# Copyright (c) 2024 TOKITA Hiroshi
+# SPDX-License-Identifier: Apache-2.0
+
+description: Test I2S Controller node
+
+compatible: "vnd,i2s"
+
+include: i2s-controller.yaml