stmpe_set_altfunc(9)

✨ stmpe_set_altfunc(9) ✨

okay so this is a page straight out of the Kernel API Manual, and it's literally about setting the alternate function for STMPE pins 🎀 like... that's the whole vibe. bestie, let's get into it 💅

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💖 NAME 💖

stmpe_set_altfunc — set the alternate function for STMPE pins ✨

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🦋 SYNOPSIS 🦋

int stmpe_set_altfunc (struct stmpe *stmpe , u32 pins , enum stmpe_block
block );

no cap, that's the whole signature 👑 note that block wraps onto the next line, she's just built like that 🙈

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🌸 ARGUMENTS 🌸

• stmpe — the device you're configuring, bestie. this is your STMPE, the main character 💫
• pins — a bitmask of the pins you wanna affect 🎯 one bit per pin, yes ma'am
• block — the block whose alternate functions you're enabling 🔥

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⭐ DESCRIPTION ⭐

so here's the tea ☕ pins is assumed to have a bit set for each of the bits whose alternate function is to be changed — and those bits are numbered according to the GPIOXY numbers. iykyk 💅

and if the GPIO module isn't enabled? not me just... turning it on for you 🫶 literally, this function automatically enables the GPIO module so it can perform the change. iconic behavior, honestly ✨

lowkey important: the GPIO module gets enabled automatically if it's not already on, so don't come for her about it 😭 it's a feature.

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🎀 SEE ALSO 🎀

• Kernel file ./drivers/mfd/stmpe.c
• struct stmpe_platform_data(9)
• stmpe_enable(9)
• stmpe_disable(9)
• stmpe_reg_read(9)
• stmpe_reg_write(9)
• stmpe_set_bits(9)
• stmpe_block_read(9)
• stmpe_block_write(9)

all the besties in the same friend group fr fr 🌈

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and that's the page, babes 💖 it lives in ./drivers/mfd, it's dated October 2026, and it's part of the Kernel API Manual — stmpe_set_altfunc(9), slay ✨💅🦋