stm32_spi_prepare_msg(9)

💫 stm32_spi_prepare_msg(9) 💫

okay so bestie, welcome to the Kernel API Manual 🌸 — today's main character is stm32_spi_prepare_msg, and honestly? she's the get-ready-with-me of the SPI world. ✨

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🎀 NAME 🎀

stm32_spi_prepare_msg — set up the controller to transfer a single message 💅

Like, literally the "bestie hold my iced coffee while I get the controller all prepped for one (1) message" function. no cap.

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🦋 SYNOPSIS 🦋

int stm32_spi_prepare_msg (struct spi_controller *ctrl , struct spi_message *msg );

she returns an int, she takes two args, she slays. periodt. 🔥

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🌈 ARGUMENTS 🌈

• ctrl — the controller interface 🎛️ — yes this is the thing we're setting up, keep up bestie
• msg — pointer to the spi_message 📨 — the actual message we're about to send out into the world, it's giving main character energy fr fr

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👑 SEE ALSO 👑

okay this list is long, but every single one of these icons deserves their moment, so here's the whole crew from the kernel file ./drivers/spi/spi-stm32.c 🫶:

• struct stm32_spi_reg(9)
• struct stm32_spi_regspec(9)
• struct stm32_spi_cfg(9)
• struct stm32_spi(9)
• stm32h7_spi_get_fifo_size(9)
• stm32f4_spi_get_bpw_mask(9)
• stm32f7_spi_get_bpw_mask(9)
• stm32h7_spi_get_bpw_mask(9)
• stm32mp25_spi_get_bpw_mask(9)
• stm32_spi_prepare_mbr(9)
• stm32h7_spi_prepare_fthlv(9)
• stm32f4_spi_write_tx(9)
• stm32f7_spi_write_tx(9)
• stm32h7_spi_write_txfifo(9)
• stm32f4_spi_read_rx(9)
• stm32f7_spi_read_rx(9)
• stm32h7_spi_read_rxfifo(9)
• stm32_spi_enable(9)
• stm32fx_spi_disable(9)
• stm32h7_spi_disable(9)
• stm32_spi_can_dma(9)
• stm32fx_spi_irq_event(9)
• stm32fx_spi_irq_thread(9)
• stm32h7_spi_irq_thread(9)
• stm32fx_spi_dma_tx_cb(9)
• stm32_spi_dma_rx_cb(9)
• stm32_spi_dma_config(9)
• stm32fx_spi_transfer_one_irq(9)
• stm32h7_spi_transfer_one_poll(9)
• stm32h7_spi_transfer_one_irq(9)
• stm32fx_spi_transfer_one_dma_start(9)
• stm32f7_spi_transfer_one_dma_start(9)
• stm32h7_spi_transfer_one_dma_start(9)
• stm32_spi_prepare_rx_dma_mdma_chaining(9)
• stm32_spi_transfer_one_dma(9)
• stm32f4_spi_set_bpw(9)
• stm32f7_spi_set_bpw(9)
• stm32h7_spi_set_bpw(9)
• stm32_spi_set_mbr(9)
• stm32_spi_communication_type(9)
• stm32fx_spi_set_mode(9)
• stm32h7_spi_set_mode(9)
• stm32h7_spi_data_idleness(9)
• stm32h7_spi_number_of_data(9)
• stm32_spi_transfer_one_setup(9)
• stm32_spi_can_poll(9)
• stm32_spi_transfer_one(9)
• stm32_spi_unprepare_msg(9)
• stm32fx_spi_config(9)
• stm32h7_spi_config(9)

like... the whole friend group showed up. obsessed. 💖 iykyk.

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ngl bestie, that's the whole page — no hidden flags, no sneaky env vars, no exit status lore. just vibes, a controller, and a message. 🧚

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and that's a wrap, babe! 🌟 this lil number lives in ./drivers/spi, dated October 2026, and answers to stm32_spi_prepare_msg(9) — go forth and prepare those messages, you absolute icon 👑💜