STRUCT EXYNOS_TMU_DATA(9)

🎀 NAME 🎀

okay so bestie, welcome to struct exynos_tmu_data — the manual page for it lives under the Kernel API Manual, and this whole thing is literally just a structure to hold the private data of the TMU driver. that's it, that's the vibe 💅

✨ SYNOPSIS ✨

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

struct exynos_tmu_data {
    void __iomem *base;
    void __iomem *base_second;
    int irq;
    enum soc_type soc;
    struct mutex lock;
    struct clk *clk, *clk_sec, *sclk;
    u32 cal_type;
    u32 efuse_value;
    u32 min_efuse_value;
    u32 max_efuse_value;
    u16 temp_error1, temp_error2;
    u8 gain;
    u8 reference_voltage;
    struct thermal_zone_device *tzd;
    bool enabled;
    void (*tmu_set_low_temp)(struct exynos_tmu_data *data, u8 temp);
    void (*tmu_set_high_temp)(struct exynos_tmu_data *data, u8 temp);
    void (*tmu_set_crit_temp)(struct exynos_tmu_data *data, u8 temp);
    void (*tmu_disable_low)(struct exynos_tmu_data *data);
    void (*tmu_disable_high)(struct exynos_tmu_data *data);
    void (*tmu_initialize)(struct platform_device *pdev);
    void (*tmu_control)(struct platform_device *pdev, bool on);
    int (*tmu_read)(struct exynos_tmu_data *data);
    void (*tmu_set_emulation)(struct exynos_tmu_data *data, int temp);
    void (*tmu_clear_irqs)(struct exynos_tmu_data *data);
 };

🌈 Members 🌈

okay this is the part where we go member by member, no skipping, we are NOT leaving anyone out 🫶

• base — base address of the single instance of the TMU controller ✨
• base_second — base address of the common registers of the TMU controller
• irq — irq number of the TMU controller, iconic honestly
• soc — id of the SOC type
• lock — lock to implement synchronization 🔒 (please respect the lock, bestie)
• clk — pointer to the clock structure
• clk_sec — pointer to the clock structure for accessing the base_second
• sclk — pointer to the clock structure for accessing the tmu special clk
• cal_type — calibration type for temperature
• efuse_value — SoC defined fuse value
• min_efuse_value — minimum valid trimming data
• max_efuse_value — maximum valid trimming data
• temp_error1 — fused value of the first point trim.
• temp_error2 — fused value of the second point trim.
• gain — gain of amplifier in the positive-TC generator block, and the rules are 0 < gain <= 15 📏
• reference_voltage — reference voltage of amplifier in the positive-TC generator block, and again, 0 < reference_voltage <= 31 ⚡
• tzd — pointer to thermal_zone_device structure
• enabled — current status of TMU device
• tmu_set_low_temp — SoC specific method to set trip (falling threshold) 🌡️
• tmu_set_high_temp — SoC specific method to set trip (rising threshold) 🔥
• tmu_set_crit_temp — SoC specific method to set critical temperature 💀
• tmu_disable_low — SoC specific method to disable an interrupt (falling threshold)
• tmu_disable_high — SoC specific method to disable an interrupt (rising threshold)
• tmu_initialize — SoC specific TMU initialization method
• tmu_control — SoC specific TMU control method
• tmu_read — SoC specific TMU temperature read method
• tmu_set_emulation — SoC specific TMU emulation setting method
• tmu_clear_irqs — SoC specific TMU interrupts clearing method

lowkey a whole army of function pointers in there — every one of them is SoC specific, fr fr. don't go thinking one size fits all 🙈

🌟 SEE ALSO 🌟

• Kernel file ./drivers/thermal/samsung/exynos_tmu.c — go read it, iykyk 📖

and that's the whole page bestie! this was the struct exynos_tmu_data(9) moment, brought to you by the fine folks at ./drivers/thermal/samsung, dated October 2026 — mwah, slay, periodt 💖🦋🌸