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Silicon Motion Extends Linux Graphics Driver

X.Org

Published on 11 July 2012 08:28 AM EDT
Written by Michael Larabel in X.Org
7 Comments

This week Silicon Motion fired off an email to the X.Org developers with a patch that introduces 38,463 lines of new code for their open-source Linux graphics driver.

While the patch is entitled new driver for siliconmotion, it appears to be extending the existing xf86-video-siliconmotion DDX driver as opposed to writing a new driver from scratch. The e-mail itself is a bit of a mess, but there's a nearly 40,000 line patch that's attached.

The description on this work just comes down to "New driver works for SM712/722/502/750/718/750LE. This is the first submission." The patch itself can be seen in the mailing list archive from Silicon Motion's Aaron Chen.

The Silicon Motion SM712 is a PCI-based 2D graphics engine with 4MB of embedded video memory and a maximum output resolution of 1280x1024. This is rather poor by today's standards, but the PCI-based SM718 allows for 16MB of embedded memory and a 1920x1440 output. The SM750 SoC moves over to PCI Express while still carrying the 1920x1440 limitation and only 16MB of embedded memory. At least this is good enough for servers/embedded systems.

This new open-source driver support is nice if you're an existing Silicon Motion customer, but not too appealing otherwise. It would have been more interesting had the new open-source hardware enablement more timely after the product's debut and if this was a DRM/KMS-based driver rather than just the DDX driver.

From this past March, see Silicon Motion Has Open-Source Driver, But Fails.

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