kernel/sound/soc/sof/ipc4-topology.c, branch linux-rolling-stable

ASoC: SOF: ipc4-topology: Correct the allocation size for bytes controls

2026-03-04T12:21:00Z

[ Upstream commit a653820700b81c9e6f05ac23b7969ecec1a18e85 ] The size of the data behind of scontrol->ipc_control_data for bytes controls is: [1] sizeof(struct sof_ipc4_control_data) + // kernel only struct [2] sizeof(struct sof_abi_hdr)) + payload The max_size specifies the size of [2] and it is coming from topology. Change the function to take this into account and allocate adequate amount of memory behind scontrol->ipc_control_data. With the change we will allocate [1] amount more memory to be able to hold the full size of data. Fixes: a382082ff74b ("ASoC: SOF: ipc4-topology: Add support for TPLG_CTL_BYTES") Cc: stable@vger.kernel.org Signed-off-by: Peter Ujfalusi Reviewed-by: Seppo Ingalsuo Reviewed-by: Ranjani Sridharan Reviewed-by: Bard Liao Reviewed-by: Kai Vehmanen Link: https://patch.msgid.link/20251217143945.2667-3-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin

ASoC: SOF: ipc4-topology: fixes for 'exotic' format

2025-12-17T07:53:20Z

Merge series from Peter Ujfalusi : The introduction of 8bit and FLOAT formats missed to cover the new corner cases they cause when the NHLT blobs are looked up. The two patch in this series fixes the 8bit and FLOAT format caused cases to be able to find the correct blob from NHLT.

ASoC: SOF: ipc4-topology: set playback channel mask

2025-12-15T14:07:29Z

Currently, we send all channels to all amps and copy the channel_mask to all ALH DMAs in playback. However, the amp may not have the capability to run any process and SOF may need to split the channels and send specific data channel to each amp. In that case, we need to split the channel_mask in ALH DMA. Copy the channel mask only if the widget channel count is the same the FE channels for playback, otherwise, split the channels among the aggregated DAIs. Like what we did in capture. Signed-off-by: Bard Liao Reviewed-by: Ranjani Sridharan Reviewed-by: Péter Ujfalusi Reviewed-by: Liam Girdwood Signed-off-by: Peter Ujfalusi Link: https://patch.msgid.link/20251215130723.31081-1-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: ipc4-topology: Convert FLOAT to S32 during blob selection

2025-12-15T14:07:22Z

SSP/DMIC blobs have no support for FLOAT type, they are using S32 on data bus. Convert the format from FLOAT_LE to S32_LE to make sure that the correct format is used within the path. FLOAT conversion will be done on the host side (or within the path). Fixes: f7c41911ad74 ("ASoC: SOF: ipc4-topology: Add support for float sample type") Cc: stable@vger.kernel.org Signed-off-by: Peter Ujfalusi Reviewed-by: Bard Liao Reviewed-by: Seppo Ingalsuo Reviewed-by: Kai Vehmanen Reviewed-by: Ranjani Sridharan Link: https://patch.msgid.link/20251215120648.4827-3-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: ipc4-topology: Prefer 32-bit DMIC blobs for 8-bit formats as well

2025-12-15T14:07:21Z

With the introduction of 8-bit formats the DMIC blob lookup also needs to be modified to prefer the 32-bit blob when 8-bit format is used on FE. At the same time we also need to make sure that in case 8-bit format is used, but only 16-bit blob is available for DMIC then we will not try to look for 8-bit blob (which is invalid) as fallback, but for a 16-bit one. Fixes: c04c2e829649 ("ASoC: SOF: ipc4-topology: Add support for 8-bit formats") Cc: stable@vger.kernel.org Signed-off-by: Peter Ujfalusi Reviewed-by: Bard Liao Reviewed-by: Seppo Ingalsuo Reviewed-by: Kai Vehmanen Reviewed-by: Ranjani Sridharan Link: https://patch.msgid.link/20251215120648.4827-2-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: ipc4/Intel: Fix the host buffer

2025-10-02T17:07:06Z

Merge series from Peter Ujfalusi : The size of the DSP host buffer was incorrectly defined as 2ms while it is 4ms and the ChainDMA PCMs are using 5ms as host facing buffer. The constraint will be set against the period time rather than the buffer time to make sure that application will not face with xruns when the DMA bursts to refill the host buffer. The minimal period size will be also used by Pipewire in case of SOF cards to set the headroom to a length which will avoid the cases when the hw_ptr jumps over the appl_ptr because of a burst. Iow, it will make Pipewire to keep a safe distance from the hw_ptr. https://github.com/thesofproject/linux/issues/5284 https://gitlab.freedesktop.org/pipewire/wireplumber/-/merge_requests/740 https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/2548

ASoC: SOF: ipc4-topology: Account for different ChainDMA host buffer size

2025-10-02T14:03:31Z

For ChainDMA the firmware allocates 5ms host buffer instead of the standard 4ms which should be taken into account when setting the constraint on the buffer size. Fixes: 842bb8b62cc6 ("ASoC: SOF: ipc4-topology: Save the DMA maximum burst size for PCMs") Signed-off-by: Peter Ujfalusi Reviewed-by: Ranjani Sridharan Reviewed-by: Kai Vehmanen Reviewed-by: Bard Liao Link: https://patch.msgid.link/20251002135752.2430-3-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: ipc4-pcm: fix start offset calculation for chain DMA

2025-10-02T12:31:44Z

Assumption that chain DMA module starts the link DMA when 1ms of data is available from host is not correct. Instead the firmware chain DMA module fills the link DMA with initial buffer of zeroes and the host and link DMAs are started at the same time. This results in a small error in delay calculation. This can become a more severe problem if host DMA has delays that exceed 1ms. This results in negative delay to be calculated and bogus values reported to applications. This can confuse some applications like alsa_conformance_test. Fix the issue by correctly calculating the firmware chain DMA preamble size and initializing the start offset to this value. Cc: stable@vger.kernel.org Fixes: a1d203d390e0 ("ASoC: SOF: ipc4-pcm: Enable delay reporting for ChainDMA streams") Signed-off-by: Kai Vehmanen Reviewed-by: Péter Ujfalusi Reviewed-by: Bard Liao Signed-off-by: Peter Ujfalusi Link: https://patch.msgid.link/20251002074719.2084-3-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown

ASoC: SOF: ipc4-topology: Fix a less than zero check on a u32

2025-09-02T10:23:46Z

Currently the error check from the call to sof_ipc4_get_sample_type is always false because a u32 variable out_ref_type is being used to perform the less than zero check. Fix this by using the int variable ret to perform the check. Fixes: c04c2e829649 ("ASoC: SOF: ipc4-topology: Add support for 8-bit formats") Signed-off-by: Colin Ian King Acked-by: Peter Ujfalusi Link: https://patch.msgid.link/20250902083213.2620124-1-colin.i.king@gmail.com Signed-off-by: Mark Brown

ASoC: SOF: ipc4: Add support for 8-bit and float

2025-08-29T22:19:57Z

Merge series from Peter Ujfalusi : This series will add support for various 8-bit and float formats.