STRUCT AT91_ADC_TOUCH(9)

💖 struct at91_adc_touch(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ today's main character is struct at91_adc_touch — literally the whole touchscreen info struct for at91-sama5d2, no cap 🫶

✨ SYNOPSIS ✨

bestie this is the shape of it, exactly as it lives in the kernel, don't touch the formatting i'm begging 🙈

struct at91_adc_touch {
    u16 sample_period_val;
    bool touching;
    u16 x_pos;
    unsigned long                   channels_bitmask;
    struct work_struct              workq;
 };

🎀 MEMBERS 🎀

like. every single field, explained, because you deserve to know 💅

• sample_period_val — the value for the periodic trigger interval ⏰ that's it, that's the vibe.
• touching — a bool that answers the question everyone's asking: is the pen touching the screen or not 👀 yes or no, iconic behaviour only.
• x_pos — temporary placeholder for pressure computation 🧮 it's just chilling there holding a spot, doing its little job.
• channels_bitmask — bitmask with the touchscreen channels enabled 🌈 every bit is a channel that said "i'm in".
• workq — workqueue for buffer data pushing 🚚 the struct work_struct that does the actual hauling of buffer data. hard worker. we stan.

🦋 SEE ALSO 🦋

go read these next, i'm obsessed with the lore 🔥

• Kernel file ./drivers/iio/adc/at91-sama5d2_adc.c struct
• struct at91_adc_platform(9)
• struct at91_adc_temp_sensor_clb(9)
• enum at91_adc_ts_clb_idx(9)
• struct at91_adc_soc_info(9)
• struct at91_adc_dma(9)
• struct at91_adc_temp(9)

ngl bestie this whole page lives in ./drivers/iio/adc and the version date on it is October 2026, and the page title is literally struct at91_adc_touch(9) — so like, that's the whole footer, mwah 💋 bye bestie, go touch some registers 🧚💜