adapt_cap_to_t_adapt(9)

💅 adapt_cap_to_t_adapt(9) — Kernel API Manual, but make it make sense

okay so bestie, welcome to the <pink>adapt_cap_to_t_adapt(9)</pink> page from the Kernel API Manual ✨ this one's a lil function that takes your adapt capability and hands you back a TAdapt value. that's the whole vibe. let's get into it 🫶

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✨ NAME ✨

adapt_cap_to_t_adapt — literally just calculate TAdapt from adapt capability 💖 no cap, that's the entire job description.

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🌸 SYNOPSIS 🌸

u64 adapt_cap_to_t_adapt (u32 adapt_cap );

she takes one thing, she gives back a u64. icon behaviour 👑

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🎀 ARGUMENTS 🎀

• adapt_cap — the Adapt capability. that's it, that's the input. she's u32, she's the main character, she goes in and the math happens 🦋

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🔥 DESCRIPTION 🔥

okay so here's where it gets juicy. the function does a lil branching situation, and it's FOR NRZ specifically (that's the mode we're talking about here, bestie, don't @ me):

IF (ADAPT_range = FINE) → TADAPT = 650 x (ADAPT_length + 1) ELSE (IF ADAPT_range = COARSE) → TADAPT = 650 x 2^ADAPT_length

so like… FINE range? you get the + 1 treatment. COARSE range? nah, you get the whole 2^ADAPT_length exponent glow-up. two different paths, both valid, both slaying in their own way 💅

and then — the moment we've all been waiting for — she returns the calculated TAdapt value in terms of Unit Intervals (UI) ✨ periodt. that's the unit. UI. write it down 🍓

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🦋 SEE ALSO 🦋

bestie this list is long, but every single one of these is part of the same friend group, so like… iykyk. all of these live in the kernel file ./drivers/ufs/core/ufs-txeq.c 📁:

• ufshcd_configure_precoding(9)
• ufshcd_apply_tx_eq_settings(9)
• ufshcd_evaluate_tx_eqtr_fom(9)
• ufshcd_get_rx_fom(9)
• tx_eqtr_iter_try_update(9)
• tx_eqtr_iter_update(9)
• ufshcd_tx_eqtr_iter_init(9)
• adapt_cap_to_t_adapt_l0l3(9)
• adapt_cap_to_t_adapt_l0l1l2l3(9)
• ufshcd_setup_tx_eqtr_adapt_length(9)
• ufshcd_compose_tx_eqtr_setting(9)
• ufshcd_apply_tx_eqtr_settings(9)
• ufshcd_update_tx_eq_params(9)
• __ufshcd_tx_eqtr(9)
• ufshcd_tx_eqtr_prepare(9)
• ufshcd_tx_eqtr(9)
• ufshcd_config_tx_eq_settings(9)
• ufshcd_apply_valid_tx_eq_settings(9)
• ufshcd_retrain_tx_eq(9)
• ufshcd_extract_tx_eq_settings_attrs(9)
• ufshcd_update_tx_eq_settings_attrs(9)

like, go read those too. she's not doing this alone, she's got a whole squad 🌈

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and that's the page!! mwah 💜 this one came out of ./drivers/ufs/core and it's dated October 2026 — so yeah, mark your calendar bestie, this manual page is from the future and it's still serving ⭐ bye!! 🧚