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September 27-30, 2021
Seattle, Washington, USA + Virtual
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IMPORTANT NOTE: Timing of sessions and room locations are subject to change through Friday, August 27 due to schedule changes that will be made as speakers finalize whether speaking in person or virtually. 

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Wednesday, September 29 • 3:55pm - 4:45pm
Advanced Camera Support on Allwinner SoCs with Mainline Linux - Paul Kocialkowski, Bootlin

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Capturing pixels with a camera involves a number of steps, from the ADC reading the photosites in the image sensor to the final pixel values that are ready for encode/display, with various processing and transmission taking place along the way. While simple cases put most of the heavy lifting on the image sensor's side (through its embedded processor) and use a simple parallel bus for transmission, advanced cases require more work to be done outside of the sensor. In addition, modern high-speed transmission buses also bring-in more complexity. This talk will present how support for such an advanced use case was integrated into the mainline Linux kernel, using the Media and V4L2 APIs. It involves supporting a sensor using the raw Bayer RGB format, transmission over the MIPI CSI-2 bus as well as support for the Image Signal Processor (ISP) found on Allwinner platforms. A specific focus will be set on this ISP, with details about the features it implements as well as the internal and userspace APIs that are used to support it. The integration between all of the involved components will also be highlighted.

Speakers
avatar for Paul Kocialkowski

Paul Kocialkowski

Embedded Linux Engineer, Bootlin
Paul joined Bootlin in 2018 and started with bringing support for the Allwinner VPU to mainline Linux. He went on to cover more topics related to graphics and multimedia, with various contributions to the DRM and V4L2 Linux subsystems as well as various related projects. Before that... Read More →


Wednesday September 29, 2021 3:55pm - 4:45pm PDT
MeetingPlay Platform + Virtual Learning Lab
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