bq25792_write16(9)

💅 bq25792_write16(9) — like, the Kernel API Manual, bestie ✨

okay so picture this: it's a (9) kernel API page, right, and it's all about bq25792_write16, which is genuinely the most "small but mighty" function ever. sending 16 whole bits to a charger chip. iconic behavior only. 🎀

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✨ NAME ✨

bq25792_write16 — bestie, this is the one that writes a 16-bit value to a device register. that's the whole vibe check. 💖

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🌸 SYNOPSIS 🌸

int bq25792_write16 (struct bq257xx_chg *pdata , unsigned int reg , u16 val );

like yes, it returns an int, and yes it takes those three things. look at her go 🫶

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🦋 ARGUMENTS 🦋

• pdata — the driver platform data. it's the struct bq257xx_chg * situation, the whole context of who we're talking to. main character energy fr fr.
• reg — the register address you're writing to. an unsigned int, bestie. pick wisely 💅
• val — the 16-bit value you're writing (u16), and it's in CPU byte order btw. keep that in mind, it matters later 👀

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💜 DESCRIPTION 💜

so what does she actually do? she converts that value you gave her to big-endian, and then she writes that 16-bit value out to the BQ25792 device via regmap. that's it. that's the whole job. no cap, no extra steps, just endian conversion and a regmap write. and honestly? slay. ⭐

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🔥 RETURN 🔥

• returns 0 on success 🎉
• or an error on failure to write 😭

that's the entire deal. zero means we ate. error means we did not.

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🌈 SEE ALSO 🌈

okay this is the part where the whole friend group shows up, so let me introduce everyone. starting with the actual home base:

Kernel file ./drivers/power/supply/bq257xx_charger.c, plus:

• struct bq257xx_chip_info(9)
• struct bq257xx_chg(9)
• bq25792_read16(9)
• bq25703_get_state(9)
• bq25792_get_state(9)
• bq25703_get_min_vsys(9)
• bq25792_get_min_vsys(9)
• bq25703_set_min_vsys(9)
• bq25792_set_min_vsys(9)
• bq25703_get_cur(9)
• bq25792_get_cur(9)
• bq25703_get_ichg_cur(9)
• bq25792_get_ichg_cur(9)
• bq25703_set_ichg_cur(9)
• bq25792_set_ichg_cur(9)
• bq25703_get_chrg_volt(9)
• bq25792_get_chrg_volt(9)
• bq25703_set_chrg_volt(9)
• bq25792_set_chrg_volt(9)
• bq25703_get_iindpm(9)
• bq25792_get_iindpm(9)
• bq25703_set_iindpm(9)
• bq25792_set_iindpm(9)
• bq25703_get_vbat(9)
• bq25792_get_vbat(9)
• bq25703_hw_init(9)
• bq25792_hw_init(9)
• bq25703_hw_shutdown(9)
• bq25792_hw_shutdown(9)
• bq257xx_set_charger_property(9)
• bq257xx_get_charger_property(9)
• bq257xx_property_is_writeable(9)
• bq257xx_external_power_changed(9)
• bq257xx_irq_handler_thread(9)
• bq257xx_parse_dt(9)
• bq257xx_charger_probe(9)
• bq257xx_charger_shutdown(9)

the way that's a whole squad 😭🫶 go read them all, iykyk.

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lowkey a reminder for future you: the value goes in as CPU byte order and gets flipped to big-endian before it hits the device. don't forget or it's giving chaos 🙈

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and that's the page! footer check: this one lives in ./drivers/power/supply, dated October 2026, and it's bq25792_write16(9) all day every day. bye bestie, go write some bytes 💖✨👑