mcp_reg_read(9)

💖 mcp_reg_read(9) — read a device register 💖

okay so bestie, this is a kernel API manual page, and honestly? it's a little one. but we're gonna give it the full main character treatment anyway because that's just who we are 🎀

---

✨ NAME ✨

mcp_reg_read — literally just reads a device register. that's the whole vibe. 💅

---

🌸 SYNOPSIS 🌸

unsigned int mcp_reg_read (struct mcp *mcp , unsigned int reg );

---

🦋 ARGUMENTS 🦋

• mcp — the MCP interface structure. yeah, the whole struct, hand it over 🫶
• reg — a 4-bit register index. four bits, bestie. tiny. precious. do not overflow it 🙈

---

💜 DESCRIPTION 💜

so what it does is: it reads a device register and returns the value it found there. that's it, that's the function, and it ate ✨

⚠️ ok but the important part, no cap: the MCP interface must be enabled to prevent this function from hanging. like, if you skip that step it's just gonna sit there. forever. 💀 so enable it first, iykyk.

---

🌈 SEE ALSO 🌈

• the kernel file ./drivers/mfd/mcp-core.c
• mcp_set_telecom_divisor(9)
• mcp_set_audio_divisor(9)
• mcp_reg_write(9)
• mcp_enable(9)
• mcp_disable(9)

---

k that's the whole page, bestie, you slayed it 💖 the source lives at ./drivers/mfd, dated October 2026, and this manual page is mcp_reg_read(9) — go read that register, icon 👑