wm8904_read_cfg_reg_arr(9)

💅 wm8904_read_cfg_reg_arr — the kernel API manual, bestie edition ✨

okay so real quick before we dive in: this whole page lives in the Kernel API Manual, section 9, and the star of the show is literally called wm8904_read_cfg_reg_arr. iconic name, no notes. 🎀

---

🌸 NAME 🌸

wm8904_read_cfg_reg_arr — Reads a subarray from a DT u16 array ✨

like… it just grabs a little slice out of a device-tree array for you. that's the whole vibe. 🫶

---

🦋 SYNOPSIS 🦋

int wm8904_read_cfg_reg_arr (const struct device_node *np , const char *
const regs_property , int size , int idx , u16 * const out );

copy it exactly like that, bestie — every const, every pointer star, every space. do not freestyle this one. 💀

---

👑 ARGUMENTS 👑

here's the lineup, one by one, no skipping:

• np — pointer to the device_node struct 💖 this is the node we're reading from, periodt.
• regs_property — DT property of interest 🌟 the one we actually wanna look at.
• size — size of subarrays within the array ✨ so the big array gets chopped into equal chunks, and this is how big each chunk is.
• idx — index of the subarray of interest 🔥 which chunk you're asking for, bestie.
• out — output 💅 where the answer lands.

---

🌈 DESCRIPTION 🌈

so basically: this is a helper to read a subarray from a DT uint16-array, divided into equally sized arrays of size. ✨ it's giving "personal assistant for device-tree data."

the subset starts at idx * size and is of size size. 🔢 that's the math, that's the whole thing, and it ate. no cap.

like, you've got one giant array? cool. but you only want one little equally-sized slice of it? that's literally what this function is for. main character energy for subarrays only. 👑

---

⭐ RETURN ⭐

0 on success, negative error code otherwise. 💀 so like… zero means slay, negative means something went sideways. check it, always. 🙈

---

🧚 SEE ALSO 🧚

• Kernel file ./sound/soc/codecs/wm8904.c — go read it, iykyk 🍓

---

aaaand that's the page! brought to you by ./sound/soc/codecs and dated October 2026 — that's the source and version + date sign-off, all cute and accounted for. 💜✨ go forth and read your subarrays, bestie. 🎀