ENUM SSP_RX_LEVEL_TRIG(9)

💅 enum ssp_rx_level_trig — a Kernel API Manual moment

okay bestie, welcome to the Kernel API Manual entry for enum ssp_rx_level_trig, and honestly? it's a little cutie with a very specific job. let's get into it ✨

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🌸 NAME 🌸

enum ssp_rx_level_trig — the receive FIFO watermark level that triggers an IT (that's an interrupt, iykyk). no cap, the interrupt fires when N or more elements are sitting in the RX FIFO. that's the whole vibe. 🫶

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✨ SYNOPSIS ✨

enum ssp_rx_level_trig {
    SSP_RX_1_OR_MORE_ELEM ,
    SSP_RX_4_OR_MORE_ELEM ,
    SSP_RX_8_OR_MORE_ELEM ,
    SSP_RX_16_OR_MORE_ELEM ,
    SSP_RX_32_OR_MORE_ELEM

};

like, look at her. five constants. all of them iconic. 💅

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🎀 Constants 🎀

so here's the thing — the source literally gives us -- undescribed -- for every single one of these, so we're not gonna sit here and make stuff up. no invented lore on my watch, periodt. what you see is what you get:

• SSP_RX_1_OR_MORE_ELEM — undescribed. that's it, that's the entry. the manpage said -- undescribed -- and I'm not about to fabricate. 🙈
• SSP_RX_4_OR_MORE_ELEM — also undescribed. mysterious queen energy. 💀
• SSP_RX_8_OR_MORE_ELEM — undescribed too, bestie. the pattern is pattern-ing. ✨
• SSP_RX_16_OR_MORE_ELEM — yep, -- undescribed --. still gorgeous though.
• SSP_RX_32_OR_MORE_ELEM — and the last one? undescribed. keeping it lowkey, keeping it mysterious. 🦋

fr fr: every one of these constants carries -- undescribed -- in the original. I'm not guessing at FIFO behaviour that isn't written down — that's not the move.

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🔥 SEE ALSO 🔥

if you're going down the rabbit hole (and you should, it's giving main character energy), go look at the Kernel file ./include/linux/amba/pl022.h, plus these absolute legends:

• enum ssp_interface(9)
• enum ssp_hierarchy(9)
• enum ssp_rx_endian(9)
• enum ssp_tx_endian(9)
• enum ssp_data_size(9)
• enum ssp_mode(9)
• enum ssp_duplex(9)
• enum ssp_clkdelay(9)

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and that's the whole page, bestie! this one came out of ./include/linux/amba back in October 2026, and the page itself is enum ssp_rx_level_trig(9). slay, go read the other enums, and stay hydrated 💖🎀🌈