linux-kernel - [PATCH v4 0/8] drm/vkms: Add support for multiple plane formats

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Message-Id: <20250530-b4-new-color-formats-v4-0-ef5f9f48376c@bootlin.com>
Date: Fri, 30 May 2025 16:05:55 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Melissa Wen <melissa.srw@...il.com>, 
 Maíra Canal <mairacanal@...eup.net>, 
 Haneen Mohammed <hamohammed.sa@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Rodrigo Siqueira <siqueira@...lia.com>, 
 Simona Vetter <simona.vetter@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, arthurgrillo@...eup.net, 
 linux-kernel@...r.kernel.org, jeremie.dautheribes@...tlin.com, 
 miquel.raynal@...tlin.com, thomas.petazzoni@...tlin.com, 
 seanpaul@...gle.com, nicolejadeyee@...gle.com, 
 Louis Chauvet <louis.chauvet@...tlin.com>
Subject: [PATCH v4 0/8] drm/vkms: Add support for multiple plane formats

This series introduce a macro to generate a function to read simple
formats. It avoid duplication of the same logic for similar formats.

In addition, it also introduce multiple "easy" formats (rgb888 variants) 
and also 16 bits yuv support (P01* formats).

PATCH 1 is the introduction of the macro and adaptation of the existing
code to avoid duplication
PATCH 2-5 introduce new formats with the help of this macro.
PATCH 6 adds support for 16-bit yuv formats
PATCH 7 introduces a macro to reduce code duplication between yuv formats
PATCH 8 adds support for P01* formats

I tested the implementation using kms_plane.

Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
Changes in v4:
- Update tests to test yuv 16 bits conversions, not only 8 bits
- Link to v3: https://lore.kernel.org/r/20241122-b4-new-color-formats-v3-0-23f7776197c9@bootlin.com

Changes in v3:
- Rebased on new YUV iterations
- Link to v2: https://lore.kernel.org/r/20241007-b4-new-color-formats-v2-0-d47da50d4674@bootlin.com

Changes in v2:
- Add proper casting/type to __le16 when needed to avoid warnings with 
  sparse
- Change the function argb_u16_from_yuv8888 to argb_u16_from_yuv161616 to 
  support 16 bits values.
- Add support for P010/P012/P016 format
- Link to v1: https://lore.kernel.org/r/20240516-b4-new-color-formats-v1-0-74cf9fe07317@bootlin.com

---
Louis Chauvet (8):
      drm/vkms: Create helpers macro to avoid code duplication in format  callbacks
      drm/vkms: Add support for ARGB8888 formats
      drm/vkms: Add support for ARGB16161616 formats
      drm/vkms: Add support for RGB565 formats
      drm/vkms: Add support for RGB888 formats
      drm/vkms: Change YUV helpers to support u16 inputs for conversion
      drm/vkms: Create helper macro for YUV formats
      drm/vkms: Add P01* formats

 drivers/gpu/drm/vkms/tests/vkms_format_test.c | 103 ++++----
 drivers/gpu/drm/vkms/vkms_formats.c           | 341 +++++++++++++-------------
 drivers/gpu/drm/vkms/vkms_formats.h           |   4 +-
 drivers/gpu/drm/vkms/vkms_plane.c             |  15 +-
 4 files changed, 244 insertions(+), 219 deletions(-)
---
base-commit: 2271e0a20ef795838527815e057f5af206b69c87
change-id: 20240312-b4-new-color-formats-1be9d688b21a

Best regards,
-- 
Louis Chauvet <louis.chauvet@...tlin.com>