STRUCT AMD_HALO_LED_DATA(9)

✨ NAME ✨

struct amd_halo_led_data — the driver's own private little data stash 💅

okay so real quick, this is page struct amd_halo_led_data(9) from the Kernel API Manual, section 9 (the kernel-internals girlies, iykyk). It's literally just the struct where the AMD Halo LED driver keeps its own stuff. no cap, that's the whole vibe. 🎀

🦋 SYNOPSIS 🦋

struct amd_halo_led_data {
    struct wmi_device *wdev;
    struct led_classdev_mc led_mc;
    struct mc_subled subled_info[3];
    struct mutex lock;
 };

bestie, that's the whole shape of it. four members, iconic, no drama. ✨

🌸 Members 🌸

• wdev — the WMI device pointer 🫶. yes, the pointer itself. that's the whole description and she ate.
• led_mc — the LED multicolor class device 🌈. this is the multicolor one, not the plain one. important distinction, dont @ me.
• subled_info — the RGB channel information 🍓. it's an array of 3, so like… red, green, blue. the math is mathing.
• lock — a mutex whose entire job is protecting the WMI calls 🔥. she's the bodyguard. respect her.

fr fr, lock is a mutex to protect WMI calls — that's the stated purpose, and we are not out here inventing extra lore about it. 💀

👑 SEE ALSO 👑

• Kernel file ./drivers/platform/x86/amd/amd_halo_led.c — go read the actual source, it's right there 🧚
• amd_halo_wmi_turn_off(9)
• amd_halo_wmi_set_rgb(9)
• amd_halo_wmi_get_rgb(9)
• amd_halo_brightness_set(9)

like, the whole friend group. the set/get/turn-off trio plus the brightness one. go say hi. 💖

and that's the page!! mwah 💋 this little number lives under ./drivers/platform/x86/amd, dated October 2026, and it's filed as struct amd_halo_led_data(9) in the Kernel API Manual. periodt. 🌟