soundwire: intel: add BPT context definition

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

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Tested-by: shumingf@realtek.com
Link: https://lore.kernel.org/r/20250227140615.8147-13-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/soundwire/intel.h b/drivers/soundwire/intel.h
index dddd293814418bf566736182536349f824d9fd99..d44e70d3c4e3c0410be86098511f26905b6374f7 100644 (file)
--- a/drivers/soundwire/intel.h
+++ b/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