spi_bpw_to_bytes(9)

🦋 spi_bpw_to_bytes(9) 🦋 — Kernel API Manual

okay so bestie, this is a Kernel API Manual page and it's literally about turning bits-per-word into bytes. tiny function, big main-character energy ✨

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💖 NAME 💖

spi_bpw_to_bytes — Covert bits per word to bytes

and yes, the original NAME line says Covert, not Convert — typo lore preserved, no cap 😭💅

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✨ SYNOPSIS ✨

u32 spi_bpw_to_bytes (u32 bpw );

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🎀 ARGUMENTS 🎀

• bpw — bits per word. that's the input getting converted, bestie 🫶

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🌸 DESCRIPTION 🌸

This function converts the given bpw to bytes. the result is always power-of-two, e.g.:

• 5 bits → 1 byte
• 9 bits → 2 bytes
• 21 bits → 4 bytes
• 37 bits → 8 bytes

and it will return 0 for the 0 input. periodt 💅

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⭐ RETURN ⭐

Bytes for the given bpw. that's the whole return vibe 🦋

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🔥 SEE ALSO 🔥

the kernel file is right here: ./include/linux/spi/spi.h

and the whole SPI bestie squad is:

• struct spi_statistics(9)
• struct spi_delay(9)
• struct spi_device(9)
• struct spi_driver(9)
• spi_unregister_driver(9)
• module_spi_driver(9)
• struct spi_controller(9)
• struct spi_res(9)
• struct spi_transfer(9)
• struct spi_message(9)
• spi_message_init_with_transfers(9)
• spi_is_bpw_supported(9)
• spi_controller_xfer_timeout(9)
• struct spi_replaced_transfers(9)
• spi_sync_transfer(9)
• spi_write(9)
• spi_read(9)
• spi_w8r8(9)
• spi_w8r16(9)
• spi_w8r16be(9)
• struct spi_board_info(9)

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mwah 💋 source/version vibes: ./include/linux/spi, dated October 2026. slay and goodbye 🎀✨