sprd_mcdt_chan_dma_enable(9)

💅 sprd_mcdt_chan_dma_enable(9) — like, the whole glow-up

okay bestie, so this is a page from the Kernel API Manual 📖✨ and it's literally about turning on DMA mode for an MCDT channel. yes it's niche. yes it's iconic. buckle up 🎀

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🌸 NAME 🌸

sprd_mcdt_chan_dma_enable — enable the DMA mode for the MCDT channel 🦋

so yeah, it's the "make the DMA do the work instead of you" button. we love a delegation moment.

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✨ SYNOPSIS ✨

int sprd_mcdt_chan_dma_enable (struct sprd_mcdt_chan *chan , enum
sprd_mcdt_dma_chan dma_chan , u32 water_mark );

three things in, one int out. classic. no cap. 🫶

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💖 ARGUMENTS 💖

• chan — the MCDT channel itself, like the main character of this whole operation 👑
• dma_chan — specify which DMA channel will be used for this MCDT channel. yes, you gotta pick one, it's giving "choose your fighter" 🥊
• water_mark — the water mark to trigger a DMA request. it's the threshold vibe check for when DMA should actually kick in 💧

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🔥 DESCRIPTION 🔥

Enable the DMA mode for the MCDT channel. what that actually means: we can use DMA to transfer data to the channel fifo and do not need reading/writing data manually. 🙈 like, you can just let it happen. no more sitting there hand-copying bytes yourself, that's so last season.

Returns 0 on success, or an error code on failure. so fr fr, check the return value — 0 is the slay, anything else is the 💀.

ngl bestie, always check that return. an unchecked error code is not the look. ⭐

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🌈 SEE ALSO 🌈

• Kernel file ./sound/soc/sprd/sprd-mcdt.c 👀 (that's the source of truth, go read it, iykyk)
• sprd_mcdt_chan_write(9)
• sprd_mcdt_chan_read(9)
• sprd_mcdt_chan_int_enable(9)
• sprd_mcdt_chan_int_disable(9)
• sprd_mcdt_chan_dma_disable(9) — the off switch, obviously 💅
• sprd_mcdt_request_chan(9)
• sprd_mcdt_free_chan(9)

the whole friend group, honestly. they all came as a set. 🎀

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okay that's the whole page, mwah 💋 brought to you by the folks at ./sound/soc/sprd, dated October 2026, and this manual page is literally named sprd_mcdt_chan_dma_enable(9). go enable some DMA, bestie, you got this 🫶✨🌸