HANDLING OF GAIN AND PHOTODIODE SIZE (PD)(9)

💅 Handling of gain and photodiode size (PD) 💅

okay bestie, this is a Kernel API Manual page, section (9), and it's literally about how gain and photodiode size (PD) team up in the driver. no cap 🫶

So here's the tea: the gains here in the driver are not exactly the same as in the datasheet of the sensor. The gain in the driver is a combo of the gain of the sensor and the photodiode size (PD). iconic, but also a little "math is math" moment 😭

The following combinations are possible:

gain(driver) = gain(sensor) * PD
0.25 = x0.5  * 1/2
0.33 = x0.66 * 1/2
0.5  = x0.5  * 2/2
0.66 = x0.66 * 2/2
1    = x1    * 2/2
2    = x2    * 2/2

That's the whole combo menu — every line stays exactly what it is, no remixes 💅

🌸 SEE ALSO 🌸

Kernel file: ./drivers/iio/light/veml6046x00.c

• struct veml6046x00_rf(9)
• struct veml6046x00_data(9)
• Valid integration times (IT)(9)
• struct veml6046x00_gain_pd(9)
• Factors for calculation of lux(9)
• veml6046x00_read_data_ready(9)
• veml6046x00_wait_data_available(9)

that's the full guest list, bestie — don't leave anyone out 🎀

✨ cute sign-off: source/version is ./drivers/iio/light, date is October 2026, and the page is Handling of...de size (PD)(9) — mwah 💋✨