VKMS is manly used to test userspace program and its behavior. The current
implementation is not very configurable as you can only have one device,
with few specific planes.
This series aims to introduce a new interface, using ConfigFS, to create
and configure more devices. This will introduce:
- Device creation
- Plane creation
- Plane configuration (type, color encoding, color range, rotations)
- Encoder creation
- CRTC creation
- Linking between CRTC and planes/encoders
The proposition is:
/config/vkms
DEVICE_1
┣━ enable
┣━ writeback
┣━ planes
┃ ┣━ PLANE_1
┃ ┃ ┣━ type
┃ ┃ ┣━ supported_rotations
┃ ┃ ┣━ color_range
┃ ┃ ┣━ color_encoding
┃ ┃ ┣━ default_color_encoding
┃ ┃ ┣━ default_rotations
┃ ┃ ┣━ default_color_range
┃ ┃ ┗━ possible_crtcs
┃ ┃ ┗━ >> /config/vkms/DEVICE_1/crtc/CRTC_1
┃ ┣━ PLANE_2
┃ ┃ ┗━ ditto
┃ ┗━ PLANE_3
┃ ┗━ ditto
┃
┣━ encoders
┃ ┣━ ENCODER_1
┃ ┃ ┗━ possible_crtcs
┃ ┃ ┗━ >> /config/vkms/DEVICE_1/crtc/CRTC_1
┃ ┗━ ENCODER_2
┃ ┗━ ditto
┃
┗━ crtc
┗━ CRTC_1
This interface aims to be extendable (new property can easly be added in
objects) and easy to use (objects are created simply by creating folders,
and configured by writing files).
Signed-off-by: Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
---
Louis Chauvet (7):
drm/vkms: Add vkms_delete/create_device helper
drm/vkms: Introduce ConfigFS interface
drm/vkms: Introduce basic plane creation
drm/vkms: Introduce plane rotation in ConfigFS
drm/vkms: Add color encoding to ConfigFS
drm/vkms: Add color range in ConfigFS
drm/vkms: Add crtc and encoder configuration in ConfigFS
drivers/gpu/drm/vkms/Kconfig | 1 +
drivers/gpu/drm/vkms/Makefile | 1 +
drivers/gpu/drm/vkms/vkms_configfs.c | 953 +++++++++++++++++++++++++++++++++++
drivers/gpu/drm/vkms/vkms_configfs.h | 105 ++++
drivers/gpu/drm/vkms/vkms_drv.c | 19 +-
drivers/gpu/drm/vkms/vkms_drv.h | 3 +
6 files changed, 1078 insertions(+), 4 deletions(-)
---
base-commit: 219b45d023ed0902b05c5902a4f31c2c38bcf68c
change-id: 20240521-google-config-fs-b935b66b8d7b
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Best regards,
--
Louis Chauvet <louis.chauvet@xxxxxxxxxxx>
