q6asm_write_async(9)

💅 q6asm_write_async — the non-blocking write, explained

Okay so bestie, real talk: this page is from the Kernel API Manual, and it's literally all about q6asm_write_async. That's the QDSP6 ASM audio thing, and this one function is the non blocking write ✨. Like, it doesn't sit there waiting around for you — it's giving main character energy and moves on. 🦋

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✨ SYNOPSIS ✨

int q6asm_write_async (struct audio_client *ac , uint32_t stream_id ,
uint32_t len , uint32_t msw_ts , uint32_t lsw_ts , uint32_t wflags );

No cap, that's the whole signature. Six arguments, and every single one matters. Let's get into them 💖

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🎀 ARGUMENTS 🎀

• ac — the audio client pointer. Your main character struct, basically the whole vibe of the connection 🫶
• stream_id — the stream id. Which stream we're talking about, periodt.
• len — length in bytes. How much we're sending, fr fr.
• msw_ts — timestamp msw. That's the most significant word of the timestamp, iykyk.
• lsw_ts — timestamp lsw. The least significant word — together with msw_ts it makes the whole timestamp 💫
• wflags — flags associated with write. The little extras that change the vibe of the write 🌸

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⭐ RETURN ⭐

So what comes back? Listen: it will be a negative value on error 😭, or zero on success 💅. That's it. Negative = bad news, 0 = slay, we ate. 🔥

Bestie, do NOT ignore a negative return. That's the error signal and it's not subtle about it 🙈

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🌈 SEE ALSO 🌈

The kernel file lives at ./sound/soc/qcom/qdsp6/q6asm.c — that's where the magic happens, go look 👑

And here's the whole friend group, all the related calls:

• q6asm_unmap_memory_regions(9)
• q6asm_map_memory_regions(9)
• q6asm_audio_client_free(9)
• q6asm_get_session_id(9)
• q6asm_audio_client_alloc(9)
• q6asm_open_write(9)
• q6asm_run(9)
• q6asm_run_nowait(9)
• q6asm_media_format_block_multi_ch_pcm(9)
• q6asm_enc_cfg_blk_pcm_format_support(9)
• q6asm_read(9)
• q6asm_open_read(9)
• q6asm_cmd(9)
• q6asm_cmd_nowait(9)

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Okurrr that's the whole page, bestie 🧚💜 This one comes from the ./sound/soc/qcom/qdsp6 corner of the kernel and it's dated October 2026 — iconic, timestamped, and filed under q6asm_write_async(9). Now go write async and prosper ✨🎀🦋