misc: ws2812-pio-rp1: Allow gamma to be disabled#7110
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pelwell merged 1 commit intoraspberrypi:rpi-6.12.yfrom Oct 27, 2025
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misc: ws2812-pio-rp1: Allow gamma to be disabled#7110pelwell merged 1 commit intoraspberrypi:rpi-6.12.yfrom
pelwell merged 1 commit intoraspberrypi:rpi-6.12.yfrom
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Pass-through mode disables all gamma and brightness processing, sending the raw pixel data directly to the LEDs. It is enabled by setting the brightness to zero, either in Device Tree or using the runtime method of writing a single byte (in this case 0) to the device. See: raspberrypi#7108 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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Updated with a change to the README explaining the new behaviour. |
popcornmix
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See: raspberrypi/linux#7112 kernel: misc: ws2812-pio-rp1: Allow gamma to be disabled See: raspberrypi/linux#7110 kernel: Add AD799X ADC support See: raspberrypi/linux#7105
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See: raspberrypi/linux#7112 kernel: misc: ws2812-pio-rp1: Allow gamma to be disabled See: raspberrypi/linux#7110 kernel: Add AD799X ADC support See: raspberrypi/linux#7105
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Modify the gamma logic such that setting the brightness in DT to zero causes the supplied pixel values to be passed through unmodified.
See: #7108