cros_ec_spi_receive_packet(9)

💖 cros_ec_spi_receive_packet(9) — like, the Kernel API Manual bestie ✨

okay so picture this: it's a function, it lives in the Kernel API Manual, and its whole entire job is grabbing a packet from the EC. iconic behavior honestly 🎀

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🌸 NAME 🌸

cros_ec_spi_receive_packet — receive a packet from the EC. that's it, that's the vibe 🦋

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✨ SYNOPSIS ✨

int cros_ec_spi_receive_packet (struct cros_ec_device *ec_dev , int
need_len );

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💅 ARGUMENTS 💅

• ec_dev — the ChromeOS EC device. your main character struct, the one we're talking to 🫶
• need_len — literally the number of message bytes we need to read. no more guessing, we know what we're here for 💜

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🔥 DESCRIPTION 🔥

ngl bestie, this one runs in two phases, and the way that it's structured is actually so smart:

1. reading the preamble bytes — because if we go reading data from the EC before it's ready to send, we just get preamble. like, nothing but preamble. awkward 😭 so we handle that.
2. reading the actual message — the real deal, the payoff, the slay 💖

and where does all that received data end up? it gets placed into ec_dev->din. periodt. that's the destination field and we're putting stuff in it ✨

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/platform/chrome/cros_ec_spi.c
• struct cros_ec_spi(9)
• struct cros_ec_xfer_work_params(9)
• receive_n_bytes(9)
• cros_ec_spi_receive_response(9)
• do_cros_ec_pkt_xfer_spi(9)
• do_cros_ec_cmd_xfer_spi(9)

the whole friend group fr fr 👑 go read all of them, iykyk 🌈

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and that's the page! tysm for reading, mwah 💋 this one comes to you from ./drivers/platform/chrome, dated October 2026, and it's cros_ec_spi_receive_packet(9) signing off 🌸💖🎀 — go get that packet, bestie 🧚✨