snd_soc_dai_set_tdm_idle(9)

📦 version 7.3.1, in nixpkgs unstable

✨ snd_soc_dai_set_tdm_idle ✨

okay so bestie, welcome to the Kernel API Manual, and buckle up because this little function is all about telling a DAI how to behave when its TDM slots are just… sitting there doing nothing 💅

🎀 NAME 🎀

snd_soc_dai_set_tdm_idle — configure a DAI's TDM idle mode

🌸 SYNOPSIS 🌸

int snd_soc_dai_set_tdm_idle (struct snd_soc_dai *dai , unsigned int
tx_mask , unsigned int rx_mask , int tx_mode , int rx_mode );

🦋 ARGUMENTS 🦋

  • dai — the DAI you're configuring, obvs. this is the main character of the operation 👑
  • tx_mask — a bitmask representing the idle TX slots ✨
  • rx_mask — a bitmask representing the idle RX slots ✨
  • tx_mode — the idle mode you wanna set for the TX slots
  • rx_mode — the idle mode you wanna set for the RX slots

💖 DESCRIPTION 💖

so basically this function configures the DAI to handle idle TDM slots in whatever manner you specify. fr fr, that's the whole vibe.

tx_mode and rx_mode can be one of:

  • SND_SOC_DAI_TDM_IDLE_NONE
  • SND_SOC_DAI_TDM_IDLE_ZERO
  • SND_SOC_DAI_TDM_IDLE_PULLDOWN
  • SND_SOC_DAI_TDM_IDLE_HIZ

now listen, SND_SOC_TDM_IDLE_NONE represents the DAI's default/unset idle slot handling state — and it could actually be any of the other modes depending on the hardware behind the DAI. so setting it explicitly? that's undefined behaviour 😭💀 not it. don't do that.

mode and mask can be set independently for both the TX and RX direction — slay, flexible icon behaviour 🫶

⚠️ heads up: some hardware may ignore both the TX and RX masks depending on its capabilities. so like, don't come for the masks if your hardware genuinely doesn't care 🙈

🌈 SEE ALSO 🌈

kernel file ./sound/soc/soc-dai.c plus all these besties:

and that's the whole page, periodt 💅✨ this came to you from ./sound/soc, dated October 2026, under the Kernel API Manual umbrella — stay iconic, go configure some idle slots responsibly 🎀💜

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