From 5d5cb86fb46ea1c7efd3b894f63fe364e5847043 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Thu, 27 Feb 2025 22:06:10 +0800 Subject: ASoC: SOF: Intel: hda-sdw-bpt: add helpers for SoundWire BPT DMA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add SoundWire BPT DMA helpers as a separate module to avoid circular dependencies. For now this assumes no link DMA, only coupled mode. Signed-off-by: Pierre-Louis Bossart Signed-off-by: Bard Liao Reviewed-by: Péter Ujfalusi Reviewed-by: Liam Girdwood Reviewed-by: Ranjani Sridharan Acked-by: Mark Brown Tested-by: shumingf@realtek.com Link: https://lore.kernel.org/r/20250227140615.8147-12-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul --- include/sound/hda-sdw-bpt.h | 69 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 include/sound/hda-sdw-bpt.h (limited to 'include') diff --git a/include/sound/hda-sdw-bpt.h b/include/sound/hda-sdw-bpt.h new file mode 100644 index 000000000000..f649549b75d5 --- /dev/null +++ b/include/sound/hda-sdw-bpt.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * Copyright(c) 2025 Intel Corporation. + */ + +#ifndef __HDA_SDW_BPT_H +#define __HDA_SDW_BPT_H + +#include + +struct hdac_ext_stream; +struct snd_dma_buffer; + +#if IS_ENABLED(CONFIG_SND_SOF_SOF_HDA_SDW_BPT) +int hda_sdw_bpt_open(struct device *dev, int link_id, struct hdac_ext_stream **bpt_tx_stream, + struct snd_dma_buffer *dmab_tx_bdl, u32 bpt_tx_num_bytes, + u32 tx_dma_bandwidth, struct hdac_ext_stream **bpt_rx_stream, + struct snd_dma_buffer *dmab_rx_bdl, u32 bpt_rx_num_bytes, + u32 rx_dma_bandwidth); + +int hda_sdw_bpt_send_async(struct device *dev, struct hdac_ext_stream *bpt_tx_stream, + struct hdac_ext_stream *bpt_rx_stream); + +int hda_sdw_bpt_wait(struct device *dev, struct hdac_ext_stream *bpt_tx_stream, + struct hdac_ext_stream *bpt_rx_stream); + +int hda_sdw_bpt_close(struct device *dev, 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); +#else +static inline int hda_sdw_bpt_open(struct device *dev, int link_id, + struct hdac_ext_stream **bpt_tx_stream, + struct snd_dma_buffer *dmab_tx_bdl, u32 bpt_tx_num_bytes, + u32 tx_dma_bandwidth, struct hdac_ext_stream **bpt_rx_stream, + struct snd_dma_buffer *dmab_rx_bdl, u32 bpt_rx_num_bytes, + u32 rx_dma_bandwidth) +{ + WARN_ONCE(1, "SoundWire BPT is disabled"); + return -EOPNOTSUPP; +} + +static inline int hda_sdw_bpt_send_async(struct device *dev, struct hdac_ext_stream *bpt_tx_stream, + struct hdac_ext_stream *bpt_rx_stream) +{ + WARN_ONCE(1, "SoundWire BPT is disabled"); + return -EOPNOTSUPP; +} + +static inline int hda_sdw_bpt_wait(struct device *dev, struct hdac_ext_stream *bpt_tx_stream, + struct hdac_ext_stream *bpt_rx_stream) +{ + WARN_ONCE(1, "SoundWire BPT is disabled"); + return -EOPNOTSUPP; +} + +static inline int hda_sdw_bpt_close(struct device *dev, 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) +{ + WARN_ONCE(1, "SoundWire BPT is disabled"); + return -EOPNOTSUPP; +} +#endif + +#endif /* __HDA_SDW_BPT_H */ -- cgit v1.2.3