soundwire: intel: add BPT context definition

This is needed to be shared between open/send_async/close.

Signed-off-by: Pierre-Louis Bossart <[email protected]>
Signed-off-by: Bard Liao <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Reviewed-by: Liam Girdwood <[email protected]>
Reviewed-by: Ranjani Sridharan <[email protected]>
Tested-by: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: plbossart

drivers/soundwire/intel.h

@@ -48,11 +48,34 @@ struct sdw_intel_link_res {
 	struct hdac_bus *hbus;
 };
 
+/**
+ * struct sdw_intel_bpt - SoundWire Intel BPT context
+ * @bpt_tx_stream: BPT TX stream
+ * @dmab_tx_bdl: BPT TX buffer descriptor list
+ * @bpt_rx_stream: BPT RX stream
+ * @dmab_rx_bdl: BPT RX buffer descriptor list
+ * @pdi0_buffer_size: PDI0 buffer size
+ * @pdi1_buffer_size: PDI1 buffer size
+ * @num_frames: number of frames
+ * @data_per_frame: data per frame
+ */
+struct sdw_intel_bpt {
+	struct hdac_ext_stream *bpt_tx_stream;
+	struct snd_dma_buffer dmab_tx_bdl;
+	struct hdac_ext_stream *bpt_rx_stream;
+	struct snd_dma_buffer dmab_rx_bdl;
+	unsigned int pdi0_buffer_size;
+	unsigned int pdi1_buffer_size;
+	unsigned int num_frames;
+	unsigned int data_per_frame;
+};
+
 struct sdw_intel {
 	struct sdw_cdns cdns;
 	int instance;
 	struct sdw_intel_link_res *link_res;
 	bool startup_done;
+	struct sdw_intel_bpt bpt_ctx;
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs;
 #endif