rsi_sdio_write_register(9)

💖 rsi_sdio_write_register(9) 💖

okay so bestie, this is rsi_sdio_write_register(9) from the Kernel API Manual, and it is literally the tiny-but-mighty register-write moment you've been waiting for. No cap. ✨

🌸 NAME 🌸

rsi_sdio_write_register — this function writes one byte of information into a register. That's the whole vibe: one byte, one register, periodt. 💅

✨ SYNOPSIS ✨

int rsi_sdio_write_register (struct rsi_hw *adapter , u8 function , u32
       addr , u8 *data );

🎀 ARGUMENTS 🎀

• adapter — pointer to the adapter structure. Your main-character struct, basically.
• function — function number. Yes, literally the number of the function.
• addr — address of the register. This is where the byte is going, iykyk.
• data — pointer to the data that has to be written. The little payload. 🫶

💅 RETURN 💅

• 0 on success.
• -1 on failure.

That's it. No secret third thing, bestie. 😌

👑 SEE ALSO 👑

Kernel file: ./drivers/net/wireless/rsi/rsi_91x_sdio.c

• rsi_sdio_set_cmd52_arg(9)
• rsi_cmd52writebyte(9)
• rsi_cmd52readbyte(9)
• rsi_issue_sdiocommand(9)
• rsi_handle_interrupt(9)
• rsi_reset_card(9)
• rsi_setclock(9)
• rsi_setblocklength(9)
• rsi_setupcard(9)
• rsi_sdio_read_register(9)
• rsi_sdio_ack_intr(9)
• rsi_sdio_read_register_multiple(9)
• rsi_sdio_write_register_multiple(9)
• rsi_sdio_host_intf_write_pkt(9)
• rsi_sdio_host_intf_read_pkt(9)
• rsi_init_sdio_interface(9)
• rsi_probe(9)
• rsi_disconnect(9)

and that's the page!! big kiss to the source/version ./drivers/net/wireless/rsi and the date October 2026 — rsi_sdio_write_register(9) forever 💖✨🎀