s1d13xxxfb_fetch_hw_state(9)

✨ s1d13xxxfb_fetch_hw_state(9) — the Kernel API Manual glow-up ✨

okay so this is a page from the Kernel API Manual, and the star of the show is s1d13xxxfb_fetch_hw_state. bestie, it's literally in the name: we're fetching the hw state. let's get into it 💅

🌸 NAME 🌸

s1d13xxxfb_fetch_hw_state — configure the framebuffer according to hardware setup.

like, your framebuffer? it's about to match what the hardware is actually doing. no cap.

✨ SYNOPSIS ✨

void s1d13xxxfb_fetch_hw_state (struct fb_info *info );

that's the whole signature, she's short and she knows it 🎀

🦋 ARGUMENTS 🦋

• info — the frame buffer structure. that's your struct fb_info *, the main character of this whole situation 👑

💖 DESCRIPTION 💖

so here's the vibe: we set up the framebuffer structures according to the current hardware setup. that's the whole job. she's a syncing girlie.

and the way this happens depends on your machine, lowkey:

• on some machines, the BIOS will have already filled the chip registers with such info — thanks babe, pre-filled 🫶
• on others, these values will have been written in some init procedure — someone else did the homework

in any case (fr fr, every single time), the software values need to match the hardware ones. if they don't match, it's giving chaos. and that matching? that's literally what this function ensures. icon behaviour, honestly 💅

⭐ NOTE ⭐

some of the hardcoded values here might need some love to work on various chips, and might need to no longer be hardcoded. 🙈

translation bestie: there are hardcoded numbers in here that are a little crusty, they might need some TLC to work across various chips, and they might need to stop being hardcoded entirely. it's a glow-up waiting to happen. not me calling out the code, i love her, i just want her to thrive 😭

🌈 SEE ALSO 🌈

• Kernel file ./drivers/video/fbdev/s1d13xxxfb.c
• s1d13xxxfb_set_par(9)
• s1d13xxxfb_setcolreg(9)
• s1d13xxxfb_blank(9)
• s1d13xxxfb_pan_display(9)
• bltbit_wait_bitclear(9)
• s1d13xxxfb_bitblt_solidfill(9)

go read those next, iykyk 📚✨

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and that's the page, bestie! this cutie lives in ./drivers/video/fbdev and the date on her lil footer is October 2026. mwah, go sync those registers 💜🧚‍♀️🔥