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ASoC: SOF: ipc4: store number of playback/capture streams

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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 <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://msgid.link/r/20240213101247.28887-6-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2024-02-13 12:12:37 +02:00 committed by Mark Brown
parent a5b7767723
commit 426476344f
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 13 additions and 0 deletions
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9
sound/soc/sof/intel/hda-stream.c
View File

@ -21,6 +21,7 @@
#include <trace/events/sof_intel.h>
#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;
}

4
sound/soc/sof/ipc4-priv.h
View File

@ -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;