dai: let DAI drivers access the underlying component object

DAI drivers sometimes need to access the underlying component object.
Make this possible by adding a pointer to struct dai_data into struct
dai and to struct comp_dev into struct dai_data and by assigning
those pointers accordingly.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

src/audio/dai-legacy.c

@@ -187,6 +187,7 @@ static struct comp_dev *dai_new(const struct comp_driver *drv,
 		comp_cl_err(&comp_dai, "dai_new(): dai_get() failed to create DAI.");
 		goto error;
 	}
+	dd->dai->dd = dd;
 	dd->ipc_config = *dai;
 
 	/* request GP LP DMA with shared access privilege */

src/include/sof/lib/dai.h

@@ -161,6 +161,7 @@ struct dai_data {
 #ifdef __ZEPHYR__
 	struct dma_config *z_config;
 #endif
+	struct comp_dev *dai_dev;
 	struct comp_buffer *dma_buffer;
 	struct comp_buffer *local_buffer;
 	struct timestamp_cfg ts_config;
@@ -199,6 +200,7 @@ struct dai {
 	int sref;		/**< simple ref counter, guarded by lock */
 	struct dai_plat_data plat_data;
 	const struct dai_driver *drv;
+	const struct dai_data *dd;
 	void *priv_data;
 };
 

src/ipc/ipc3/dai.c

@@ -288,6 +288,8 @@ int dai_config(struct comp_dev *dev, struct ipc_config_dai *common_config,
 		return 0;
 	}
 
+	dd->dai_dev = dev;
+
 	switch (config->flags & SOF_DAI_CONFIG_FLAGS_CMD_MASK) {
 	case SOF_DAI_CONFIG_FLAGS_HW_PARAMS:
 		/* set the delayed_dma_stop flag */

src/ipc/ipc4/dai.c

@@ -274,6 +274,8 @@ int dai_config(struct comp_dev *dev, struct ipc_config_dai *common_config,
 	if (dai_config_dma_channel(dev, spec_config) == DMA_CHAN_INVALID)
 		return 0;
 
+	dd->dai_dev = dev;
+
 	/* allocated dai_config if not yet */
 	if (!dd->dai_spec_config) {
 		size = sizeof(*copier_cfg);