rt_sdca_index_read(9)

💅 NAME 💅

okay so bestie, this is rt_sdca_index_read(9) from the Kernel API Manual ✨. It literally exists to read a value from a Realtek defined register. That's the whole assignment, no cap. 🎀

🦋 SYNOPSIS 🦋

int rt_sdca_index_read (struct regmap *map , unsigned int nid , unsigned int reg , unsigned int *value );

🎀 ARGUMENTS 🎀

• map — the map for setting, bestie. 🗺️
• nid — the Realtek-defined ID. 👑
• reg — the register. 📝
• value — the value. 💖

🌸 DESCRIPTION 🌸

okay so here's the return vibe check: a value of zero will be returned on success ✨. In error cases, a negative errno will be returned 😭. That's it. That's the tea. 🍵

🌈 SEE ALSO 🌈

• Kernel file ./sound/soc/codecs/rt-sdw-common.c — go peek at the source, iykyk 👀
• rt_sdca_index_write(9), rt_sdca_index_update_bits(9), rt_sdca_btn_type(9), rt_sdca_headset_detect(9), rt_sdca_button_detect(9) — the whole friend group, fr fr 💜

cute little sign-off: source/version is ./sound/soc/codecs, dated October 2026 🎀✨💖