From 426476344f01096c7dae6c5413cc8a8d9bbdea29 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Tue, 13 Feb 2024 12:12:37 +0200 Subject: [PATCH] ASoC: SOF: ipc4: store number of playback/capture streams MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The CHAIN_DMA IPC needs the number of playback streams as a start offset for the dma_id of a capture stream. This offset can be retrieved on Intel platforms from the GCAP information, and stored in the sof_ipc4_fw_data structure. One could argue that the fields added are not really dependent on any firmware definitions but rather on hardware capabilities, but they are required for the IPC CHAIN_DMA definitions so adding them in ipc4_fw_data isn't completely silly. The CHAIN_DMA IPC is currently only functional on Intel HDaudio DMAs, and gated by the snd_sof_is_chain_dma_supported() helper. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Péter Ujfalusi Reviewed-by: Bard Liao Signed-off-by: Peter Ujfalusi Link: https://msgid.link/r/20240213101247.28887-6-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown --- sound/soc/sof/intel/hda-stream.c | 9 +++++++++ sound/soc/sof/ipc4-priv.h | 4 ++++ 2 files changed, 13 insertions(+) diff --git a/sound/soc/sof/intel/hda-stream.c b/sound/soc/sof/intel/hda-stream.c index f2ebadbbcc10e..b387b1a69d7ea 100644 --- a/sound/soc/sof/intel/hda-stream.c +++ b/sound/soc/sof/intel/hda-stream.c @@ -21,6 +21,7 @@ #include #include "../ops.h" #include "../sof-audio.h" +#include "../ipc4-priv.h" #include "hda.h" #define HDA_LTRP_GB_VALUE_US 95 @@ -937,6 +938,14 @@ int hda_dsp_stream_init(struct snd_sof_dev *sdev) /* store total stream count (playback + capture) from GCAP */ sof_hda->stream_max = num_total; + /* store stream count from GCAP required for CHAIN_DMA */ + if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4) { + struct sof_ipc4_fw_data *ipc4_data = sdev->private; + + ipc4_data->num_playback_streams = num_playback; + ipc4_data->num_capture_streams = num_capture; + } + return 0; } diff --git a/sound/soc/sof/ipc4-priv.h b/sound/soc/sof/ipc4-priv.h index 1d39836d5efac..f3b908b093f95 100644 --- a/sound/soc/sof/ipc4-priv.h +++ b/sound/soc/sof/ipc4-priv.h @@ -66,6 +66,8 @@ struct sof_ipc4_fw_library { * @nhlt: NHLT table either from the BIOS or the topology manifest * @mtrace_type: mtrace type supported on the booted platform * @mtrace_log_bytes: log bytes as reported by the firmware via fw_config reply + * @num_playback_streams: max number of playback DMAs, needed for CHAIN_DMA offset + * @num_capture_streams: max number of capture DMAs * @max_num_pipelines: max number of pipelines * @max_libs_count: Maximum number of libraries support by the FW including the * base firmware @@ -79,6 +81,8 @@ struct sof_ipc4_fw_data { void *nhlt; enum sof_ipc4_mtrace_type mtrace_type; u32 mtrace_log_bytes; + int num_playback_streams; + int num_capture_streams; int max_num_pipelines; u32 max_libs_count; bool fw_context_save; -- 2.30.2