[PATCH 0/7] drm/i915: Convert fbdev to DRM client

Thomas Zimmermann tzimmermann at suse.de
Mon Sep 25 07:56:20 UTC 2023


This is version 3 of the patchset.

Am 25.09.23 um 09:26 schrieb Thomas Zimmermann:
> Convert i915's fbdev code to struct drm_client. Replaces the current
> ad-hoc integration. The conversion includes a number of cleanups. The
> patchset also enables unloading of driver modules with in-kernel DRM
> clients; a feature required by i915.
> 
> As with the other drivers' fbdev emulation, fbdev in i915 is now
> an in-kernel DRM client that runs after the DRM device has been
> registered. This allows to remove the asynchronous initialization.
> 
> i915 is the last driver with an fbdev emulation that is not build
> upon struct drm_client. Once reviewed, the patches would ideally go
> into drm-misc-next, so that the old fbdev helper code can be removed.
> We can also attempt to add additional in-kernel clients. A DRM-based
> dmesg log or a bootsplash are commonly mentioned. DRM can then switch
> easily among the existing clients if/when required.
> 
> v3:
> 	* support module unloading (Jani, CI bot)
> 	* as before, silently ignore devices without displays (CI  bot)
> v2:
> 	* fix error handling (Jani)
> 	* fix non-fbdev builds
> 	* various minor fixes and cleanups
> 
> Thomas Zimmermann (7):
>    drm/i915: Unregister in-kernel clients
>    drm/client: Do not acquire module reference
>    drm/client: Export drm_client_dev_unregister()
>    drm/i915: Move fbdev functions
>    drm/i915: Initialize fbdev DRM client with callback functions
>    drm/i915: Implement fbdev client callbacks
>    drm/i915: Implement fbdev emulation as in-kernel client
> 
>   drivers/gpu/drm/drm_client.c                  |  25 +-
>   drivers/gpu/drm/i915/display/intel_display.c  |   1 -
>   .../drm/i915/display/intel_display_driver.c   |  19 --
>   drivers/gpu/drm/i915/display/intel_fbdev.c    | 250 ++++++++++--------
>   drivers/gpu/drm/i915/display/intel_fbdev.h    |  29 +-
>   drivers/gpu/drm/i915/i915_driver.c            |  27 +-
>   6 files changed, 156 insertions(+), 195 deletions(-)
> 

-- 
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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