stm32f4_spi_get_bpw_mask(9)

💅 stm32f4_spi_get_bpw_mask(9) — Kernel API Manual ✨

okay bestie, welcome to the manual page for stm32f4_spi_get_bpw_mask, straight out of the Kernel API Manual, no cap 🫶

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🌸 NAME 🌸

stm32f4_spi_get_bpw_mask — literally just returns the bits-per-word mask 💖 that's it, that's the whole job, and honestly? iconic.

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🎀 SYNOPSIS 🎀

int stm32f4_spi_get_bpw_mask (struct stm32_spi *spi );

so it's a function that hands you back an int, and it takes exactly one thing. main character energy, minimal effort, maximum slay ✨

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🦋 ARGUMENTS 🦋

• spi — pointer to the spi controller data structure 🌈 fr fr, just pass her the spi struct pointer and she's good to go

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💫 SEE ALSO 💫

okay so this is the part where the manpage just... lists the entire extended cinematic universe of spi-stm32.c 😭 and honestly we respect the commitment. Here's the kernel file she lives in:

• Kernel file ./drivers/spi/spi-stm32.c 👑

and the structs:

• struct stm32_spi_reg(9)
• struct stm32_spi_regspec(9)
• struct stm32_spi_cfg(9)
• struct stm32_spi(9)

and the other bpw-mask besties (there's a whole friend group, lowkey):

• stm32h7_spi_get_fifo_size(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)

the write/read girlies:

• 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)

the enable/disable + dma crew:

• stm32_spi_enable(9)
• stm32fx_spi_disable(9)
• stm32h7_spi_disable(9)
• stm32_spi_can_dma(9)

irq vibes:

• stm32fx_spi_irq_event(9)
• stm32fx_spi_irq_thread(9)
• stm32h7_spi_irq_thread(9)

message + dma config squad:

• stm32_spi_prepare_msg(9)
• stm32fx_spi_dma_tx_cb(9)
• stm32_spi_dma_rx_cb(9)
• stm32_spi_dma_config(9)

transfer paths (irq / poll / dma-starty ones):

• 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)

set_bpw + set_mbr + the mode girlies:

• 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)

h7 specific lil details:

• stm32h7_spi_data_idleness(9)
• stm32h7_spi_number_of_data(9)

the transfer-one setup + teardown besties:

• stm32_spi_transfer_one_setup(9)
• stm32_spi_can_poll(9)
• stm32_spi_transfer_one(9)
• stm32_spi_unprepare_msg(9)

and finally the config icons:

• stm32fx_spi_config(9)
• stm32h7_spi_config(9)

like, that's the whole group chat 😭 every single one of them tagged, not one left on read 💀

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lowkey a reminder bestie: this page only tells you what's here — the mask function takes your spi pointer and gives you an int back, and everything else is a "go read that one next" situation 🧚

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okay that's the page!! signing off with the source/version and date so nothing gets lost: this one's from ./drivers/spi 📁 and it's dated October 2026 🗓️✨ periodt, go read the other fifty-one pages, ily bye 💜🦋