STRUCT SOF_IPC4_DMA_STREAM_CH_MAP(9)

💅 struct sof_ipc4_dma_stream_ch_map — DMA configuration data

okay so bestie, welcome to the Kernel API Manual ✨ this one's a lil struct that holds the DMA configuration data, and honestly? it's giving "small but mighty." no cap.

🌸 SYNOPSIS

struct sof_ipc4_dma_stream_ch_map {
    uint32_t device_count;
    struct sof_ipc4_dma_device_stream_ch_map
mapping[SOF_IPC4_DMA_DEVICE_MAX_COUNT];
 };

like, that's the whole thing. two fields. she's compact, she's iconic, she knows what she is 💖

🎀 Members

• device_count — the number of valid items in the mapping array. like, how many of these entries are actually real and not just sitting there being filler 🫶
• mapping — the device address and channel mask. this is the main character of the struct ngl 👑

🦋 SEE ALSO

bestie, there is a whole friend group here — the Kernel file ./sound/soc/sof/ipc4-topology.h is where they all live, and these are all the siblings and cousins:

• struct sof_ipc4_pipeline(9)
• struct ipc4_pipeline_set_state_data(9)
• struct sof_ipc4_pin_format(9)
• struct sof_ipc4_available_audio_format(9)
• struct sof_copier_gateway_cfg(9)
• struct sof_ipc4_copier_data(9)
• struct sof_ipc4_gtw_attributes(9)
• struct sof_ipc4_dma_device_stream_ch_map(9)
• struct sof_ipc4_dma_config(9)
• struct sof_ipc4_dma_config_tlv(9)
• struct sof_ipc4_copier(9)
• struct sof_ipc4_ctrl_value_chan(9)
• struct sof_ipc4_control_data(9)
• struct sof_ipc4_control_msg_payload(9)
• struct sof_ipc4_gain_params(9)
• struct sof_ipc4_gain_data(9)
• struct sof_ipc4_gain(9)
• struct sof_ipc4_mixer(9)
• struct sof_ipc4_src(9)
• struct sof_ipc4_asrc(9)
• struct sof_ipc4_base_module_cfg_ext(9)
• struct sof_ipc4_process(9)

like, that's a squad. go read them all, iykyk 💀

lowkey obsessed with how every one of these is a (9) — kernel API manual section, we stan a consistent queen 🌈

and that's the page, bestie! 🎀 this one came from ./sound/soc/sof, dated October 2026 — mwah, sending u a lil sign-off kiss 💜🧚‍♀️ periodt.