snd_dmaengine_pcm_pointer(9)

🎀 snd_dmaengine_pcm_pointer 🎀

okay bestie, welcome to the Kernel API Manual entry for this little dmaengine PCM pointer icon 💅✨ she's short, she's specific, and she knows exactly what she's about.

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✨ NAME ✨

snd_dmaengine_pcm_pointer — dmaengine based PCM pointer implementation. that's the whole name, no notes, she's concise 💖

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🦋 SYNOPSIS 🦋

snd_pcm_uframes_t snd_dmaengine_pcm_pointer (struct snd_pcm_substream
*substream );

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🌸 ARGUMENTS 🌸

• substream — PCM substream. that's the one and only argument, bestie 🫶

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💜 DESCRIPTION 💜

okay so this function can be used as the PCM pointer callback for dmaengine based PCM driver implementations. literally that's her job, and she ate 💅✨ it's giving callback-ready main character energy, no cap.

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🧚 RETURN 🧚

PCM position in frames 🔥 that's the return value, and yes, the unit is frames. periodt 💖

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🌈 SEE ALSO 🌈

• Kernel file ./sound/core/pcm_dmaengine.c
• snd_hwparams_to_dma_slave_config(9)
• snd_dmaengine_pcm_set_config_from_dai_data(9)
• snd_dmaengine_pcm_trigger(9)
• snd_dmaengine_pcm_pointer_no_residue(9)
• snd_dmaengine_pcm_request_channel(9)
• snd_dmaengine_pcm_open(9)
• snd_dmaengine_pcm_close(9)
• snd_dmaengine_pcm_close_release_chan(9)
• snd_dmaengine_pcm_refine_runtime_hwparams(9)

all the siblings are here, go say hi 🦋✨

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mwah 💋 signing off from ./sound/core, dated October 2026 — that's the snd_dmaengine_pcm_pointer(9) moment, and she's iconic for it 🎀💖