STRUCT SPEAR_SPICS(9)

💅 struct spear_spics(9)

okay bestie, buckle up — this is a page from the Kernel API Manual and it's all about one little struct. ngl it's giving "niche but iconic" ✨

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✨ NAME ✨

struct spear_spics — the struct that literally represents spi chip select control 🎀 no cap, that's the whole vibe.

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🌸 SYNOPSIS 🌸

here's the whole thing, copied exactly so you can't mess it up:

struct spear_spics {
    void __iomem            *base;
    u32 perip_cfg;
    u32 sw_enable_bit;
    u32 cs_value_bit;
    u32 cs_enable_mask;
    u32 cs_enable_shift;
    unsigned long           use_count;
    int last_off;
    struct gpio_chip        chip;
 };

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🦋 Members 🦋

okay so let's go through every single one of these, because each field is a main character in its own right 💜

• base — base address. that's it, that's the field. the address where it all begins 🫶
• perip_cfg — configuration register. the vibe-setting register, if you will ✨
• sw_enable_bit — the bit to enable s/w control over chipselects. so like, the little switch that hands chipselect duty over to software 👑
• cs_value_bit — the bit to program high or low chipselect. high or low, pick your fighter 💅
• cs_enable_mask — mask to select bits required to select chipselect. it's masking. it's selecting. it's doing the most 🎀
• cs_enable_shift — bit pos of cs_enable_mask. literally just the position, bestie, someone has to keep track 🌸
• use_count — use count of a spi controller cs lines. counting the uses, one at a time, no drama 🔥
• last_off — stores last offset caller of set_value. a little memory of who called last, so nostalgic 😭
• chip — gpio_chip abstraction. the whole GPIO vibe, abstracted 🦋

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpio/gpio-spear-spics.c — go read it, bestie, it's right there 📖

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fr fr go look at that source file, the struct doesn't explain itself and this page isn't gonna do it for you either 💀

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and that's a wrap, bestie 🧚 this was the struct spear_spics(9) page, straight out of ./drivers/gpio, dated October 2026 — slay, periodt, see you in the next manpage 💖🌟