ufshcd_extr...ttings_attrs(9)

💅 ufshcd_extract_tx_eq_settings_attrs(9) — like, the actual page

okay so this is from the Kernel API Manual bestie, and it's a kernel function page, so buckle up 🎀

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✨ NAME ✨

ufshcd_extract_tx_eq_settings_attrs — my girl pulls the TX Equalization settings out of the UFS attributes, no cap 💖

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🦋 SYNOPSIS 🦋

void ufshcd_extract_tx_eq_settings_attrs (struct ufs_hba *hba , u8 gear );

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🌸 ARGUMENTS 🌸

• hba — the per adapter instance, aka your main character struct 🫶
• gear — the target gear 🌈

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👑 DESCRIPTION 👑

Okay so picture this: we already did an EQTR procedure at some point, right, and it figured out the optimal TX Equalization parameters — PreShoot, DeEmphasis, and the PreCoding enable. Those little guys got stashed away in the UFS attributes, and this function is the one that goes and gets them back out. 💅

The function reads:

1. qTxEQGnSettings (64-bit): the main attribute, containing the PreShoot and DeEmphasis values for both host and device TX lanes 🔥
2. wTxEQGnSettingsExt (16-bit): the extended attribute, containing the PreCoding enable flags and a validity indicator ⭐

literally just goes in, grabs both, done. iconic behavior tbh ✨

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🧚 SEE ALSO 🧚

Kernel file ./drivers/ufs/core/ufs-txeq.c — and bestie, the whole friend group:

• 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(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_update_tx_eq_settings_attrs(9)

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bestie reminder: this is the extract function. it reads the stored settings, it does not apply them. go read ufshcd_apply_tx_eq_settings(9) if that's what you're after, iykyk 💀

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mwah 💜 that's the whole page!! this came out of ./drivers/ufs/core, dated October 2026, under the Kernel API Manual banner — go off, ufs-txeq.c, you ate 🍓✨