load_fw_from_host(9)

💖 load_fw_from_host(9) 💖

okay bestie, welcome to the Kernel API Manual ✨ this one's short and sweet, and it's literally all about waking up the ISH firmware from the host side. let's get into it 🫶

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🌸 NAME 🌸

load_fw_from_host — loads the ISH firmware from the host, no cap 💅

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✨ SYNOPSIS ✨

int load_fw_from_host (struct ishtp_cl_data *client_data );

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🎀 ARGUMENTS 🎀

• client_data — the client data instance, aka the little bundle of context this whole thing rides on 🦋

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💫 DESCRIPTION 💫

so basically this function loads the ISH firmware into ISH SRAM and then kicks off execution. that's the whole vibe. firmware goes in, execution starts, main character energy all around 👑

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🌈 RETURN 🌈

• 0 — slay, it worked, success 💖
• negative error code — not slay, it failed, and it's telling you why 😭

ngl if you get a negative number back, that's your cue to go read the error and not just vibe past it, okay? 🙈

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🦋 SEE ALSO 🦋

• kernel file ./drivers/hid/intel-ish-hid/ishtp-fw-loader.c
• enum ish_loader_commands(9)
• struct loader_msg_hdr(9)
• struct response_info(9)
• get_firmware_variant(9)
• loader_cl_send(9)
• process_recv(9)
• loader_cl_event_cb(9)
• ish_query_loader_prop(9)
• ish_fw_xfer_ishtp(9)
• ish_fw_xfer_direct_dma(9)
• ish_fw_start(9)
• loader_init(9)
• loader_ishtp_cl_probe(9)
• loader_ishtp_cl_remove(9)
• loader_ishtp_cl_reset(9)

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and that's the whole page, bestie 💜 it lives over in ./drivers/hid/intel-ish-hid, dated October 2026 — iconic little corner of the kernel fr fr 🎀✨ go read the SEE ALSO list, it's giving lore 🔥