decode_var(9)

💅 decode_var(9) — the kernel API glow-up

Okay bestie, welcome to decode_var(9), a kernel API manual page and honestly kind of a main character in the i810 framebuffer saga. Grab your iced coffee 🍓, we're reading kernel docs together.

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✨ NAME ✨

decode_var — modify par according to contents of var

Like, that's the whole vibe. var walks in, par gets a whole new personality. 🦋

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🎀 SYNOPSIS 🎀

void decode_var (const struct fb_var_screeninfo *var , struct i810fb_par
*par );

Yes that's the function signature, copy it exactly, no cap. 💅

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🌸 ARGUMENTS 🌸

• var — pointer to fb_var_screeninfo. That's your source of truth, the blueprint, the inspo board.
• par — pointer to i810fb_par. That's the one getting made over. 🫶

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💖 DESCRIPTION 💖

So here's the tea: based on the contents of var, par will be dynamically filled up. Not statically, not halfway, dynamically. ✨

And par contains all information necessary to modify the hardware — like, everything you need, the full fit, head to toe. It's giving "I have everything I need in my bag" energy. 👑

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🔥 SEE ALSO 🔥

Kernel file ./drivers/video/fbdev/i810/i810_main.c — that's where the magic lives, go read it, iykyk.

And the whole friend group 💜:

• i810_screen_off(9)
• i810_dram_off(9)
• i810_protect_regs(9)
• i810_load_pll(9)
• i810_load_vga(9)
• i810_load_vgax(9)
• i810_load_2d(9)
• i810_hires(9)
• i810_load_pitch(9)
• i810_load_color(9)
• i810_load_regs(9)
• get_line_length(9)
• i810_calc_dclk(9)
• i810_enable_cursor(9)
• i810_init_cursor(9)
• i810_round_off(9)
• set_color_bitfields(9)
• i810_check_params(9)
• encode_fix(9)
• i810fb_getcolreg(9)
• i810_init_monspecs(9)
• i810_init_defaults(9)
• i810_init_device(9)

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Ngl, this page is short but it ate. Every one of these cross-refs is a real one, go click around, the rabbit hole is worth it. 🧚

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That's a wrap, bestie! This little gem came from ./drivers/video/fbdev/i810 and it's dated October 2026. Slay, decode_var(9), you icon. 🌈🎀💖