cros_ec_lpc_io_bytes_mec(9)

💅 cros_ec_lpc_io_bytes_mec — NAME ✨

okay so bestie, this is a page from the Kernel API Manual and it's about cros_ec_lpc_io_bytes_mec, which lowkey does exactly what it says on the tin: Read / write bytes to MEC EMI port. that's the whole vibe. very "small function, important job" energy fr fr 🎀

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🦋 SYNOPSIS 🌸

int cros_ec_lpc_io_bytes_mec (enum cros_ec_lpc_mec_io_type io_type ,
unsigned int offset , unsigned int length , u8 *buf );

like, yes, that's the signature, and no, we are not editing it. it's giving "copy it exactly or the compiler will simply end you" 💀

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🫶 ARGUMENTS 👑

• io_type — this lil guy tells the function which direction we're going: either MEC_IO_READ or MEC_IO_WRITE, depending on what the request actually is. it's the vibe check of the whole call, ngl.
• offset — the base read / write address. basically where in the port we're hanging out 🗺️
• length — the number of bytes to read / write. how many we're grabbing (or dropping off), no more, no less 🌈
• buf — the destination / source buffer, aka the container that holds the goods. on a read it's where stuff lands, on a write it's where stuff comes from. main character buffer energy 💖

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⭐ RETURN 💫

if things go sideways, you get a negative error code back — that's the "something went wrong, check it" signal 😭

if things are slaying? you get the 8-bit checksum of all bytes read / written. cute little number, very useful, obsessed 🧚

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🔥 SEE ALSO 💜

• Kernel file ./drivers/platform/chrome/cros_ec_lpc_mec.h — go read the header, it's right there, iykyk 📄
• cros_ec_lpc_mec_init(9)
• cros_ec_lpc_mec_acpi_mutex(9)
• cros_ec_lpc_mec_in_range(9)

the whole friend group, honestly. go say hi to all of them 🫶✨

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and that's a wrap, bestie 🎀 this little page lives under ./drivers/platform/chrome, and it's dated October 2026 — so yeah, future icon behaviour, periodt 💅👑