Am 23.03.26 um 04:57 schrieb Dmitry Baryshkov:
On Thu, Mar 19, 2026 at 04:59:36PM +0100, Thomas Zimmermann wrote:
We keep getting new drivers based on the obsolete simple-display pipeline,
such as the recent driver for st7789v panels. [1] But submitters cannot
know, as the simple-display helpers are fully documented and still used
in several places.
Hence, convert all the mipi-dbi drivers over to regular atomic helpers
and remove simple-display support from mipi-dbi in this series. Then
undocument the helpers and add TODO items for final their removal.
Patch 1 changes the mode-setting logic to get CRTC and panel updates into
the correct order. This patch is probably the most fragile change in the
series.
Patches 2 and 3 prepare mipi-dbi to allow for atomic helpers to be used.
Patches 5 to 14 update mipi-dbi drivers one by one. The st7735r driver
requires some additional minor preparation. Overall, the refactoring is
always the same.
Patches 15 and 16 clean up mipi-dbi and the simple-display helpers.
These patches need some testing, as I can only compile them. At least
one of the drivers should be tried on hardware. Regressions should be
easy to fix, as these changes are mostly refactoring jobs.
[1]
https://lore.kernel.org/dri-devel/[email protected]/
v3:
- fix uninitialized variables (David)
- improve documentation (David)
- clean up
For the series:
Reviewed-by: Dmitry Baryshkov <[email protected]>
Thanks a lot!
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstr. 146, 90461 Nürnberg, Germany, www.suse.com
GF: Jochen Jaser, Andrew McDonald, Werner Knoblich, (HRB 36809, AG Nürnberg)
