Re: [82/86] drm/i915: Move custom hotplug code into separate callback

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Hi

Am 20.08.24 um 12:39 schrieb Sui Jingfeng:


Besides, a lot of DRM driver instances has the DMA/2D acceleration hardware, promote it into drm_driver structure may has the potential to utilize hardware acceleration. Drivers will more easily to have custom implementation. I'm not 100% sure if it will only be used
by i915 in the future.

The correct place to do acceleration would be in the blit helpers in drm_format_helper.c. But no one bothered so far. For fbdev-only acceleration, DRM drivers could have custom fb_ops for accelerated drawing, copying, etc. Few cared and almost all removed that code at some point. The latest consent was that the complexity of the implementation outweights the performance gains. Even the few devs who actually asked for it didn't bother in the end.

Best regards
Thomas


Best regards,
Sui


--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)




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