STRUCT SDHCI_S3C(9)

🦋 struct sdhci_s3c(9) — S3C SDHCI instance 🦋

okay bestie, welcome to the Kernel API Manual ✨ — this is the page for struct sdhci_s3c, and honestly it's giving very much "the main character struct of the S3C SDHCI driver" 💅. Buckle up, we're reading a struct definition together and it's gonna slay.

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✨ NAME ✨

struct sdhci_s3c — the S3C SDHCI instance, periodt 💖. That's the whole vibe: it's the struct that holds one of these controller instances.

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🎀 SYNOPSIS 🎀

ok so here's the actual shape of it, copy it character for character bestie, no cap:

struct sdhci_s3c {
    struct sdhci_host       *host;
    struct platform_device  *pdev;
    struct resource         *ioarea;
    struct s3c_sdhci_platdata *pdata;
    int cur_clk;
    int ext_cd_irq;
    struct clk              *clk_io;
    struct clk              *clk_bus[MAX_BUS_CLK];
    unsigned long           clk_rates[MAX_BUS_CLK];
    bool no_divider;
 };

lowkey gorgeous. ten members, all iconique, all doing their little job 🫶

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🌸 Members 🌸

• host — the SDHCI host that got created 💖. like, the actual host object this whole struct is built around.
• pdev — the platform device we were created from. iykyk, your origin story 🎀
• ioarea — the resource that got created when we claimed the IO area. we staked our claim, we're that girl now 👑
• pdata — the platform data for this controller. all the config tea ☕
• cur_clk — the index of the current bus clock 🔥 (yes, index, not the clock itself, don't get it twisted).
• ext_cd_irq — the external card detect interrupt. she's out here detecting cards externally, iconic behavior 💅
• clk_io — the clock for the internal bus interface 🌈
• clk_bus — the clocks that are available for the SD/MMC bus clock. it's an array, that's MAX_BUS_CLK many of them, pls respect her capacity 🦋
• clk_rates — clock frequencies, stored as unsigned long, again MAX_BUS_CLK of them. numbers! math! slay 🍓
• no_divider — a bool that means no or non-standard internal clock divider. so if this is set, bestie, the divider situation is not the standard situation 😭

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💜 SEE ALSO 💜

go read these next, they're all in the kernel file ./drivers/mmc/host/sdhci-s3c.c fr fr:

• struct sdhci_s3c_drv_data(9)
• sdhci_s3c_get_max_clk(9)
• sdhci_s3c_consider_clock(9)
• sdhci_s3c_set_clock(9)
• sdhci_s3c_get_min_clock(9)

and they all live under ./drivers/mmc/host 🧚 — that's the directory, that's the home base, that's where the lore lives.

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k bye bestie, this page was brought to you by ./drivers/mmc/host, dated October 2026, and it's part of the Kernel API Manual — mwah 💋✨💖