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Collabora & Linux Kernel 4.14

Posted on 13/11/2017 by Gabriel Krisman Bertazi

Linus Torvalds has released Linux 4.14, so it's time to take a look at the Collaborans' contributions to this release. On total, we had 9 developers who authored 46 patches all around the kernel. In addition, 7 Collaborans contributed their time to review and test 40 patches. Finally, over a hundred patches found their way to Linus tree via our team, who provided over 108 non-author sign-offs during this development cycle.

Taking a deeper look at the contributions, Sebastian Reichel continued on his role as the Power Supply maintainer. Aside from several improvements for the da9052 PMIC driver, he added a driver for PWM controllable vibrators, which will be used by the Motorola Droid 4. Romain Perier, who recently left Collabora, touched several users of the PCI DMA Pool wrappers, which is currently deprecated, and updated them to use the DMA Pool API directly, making it one step closer to complete his proposal to remove the pci_poll_*() macros.

Enric Balletbo i Serra contributed to the support of the TPS65217 PMIC and improved the documentation for TPM. Gustavo Padovan implemented support for Asynchronous single-plane atomic updates in the DRM/KMS stack, which allows urgent screen updates (mainly cursors) to skip the update queue and be commited quickly, reducing the latency of such updates and improving user experience.

Thierry Escande did some clean-ups around the media subsystem, particularly for the s5p-jpeg code. Fabien Lahoudere contributed to the support of the s35390a RTC, which is used in a number of devices. Gabriel Krisman Bertazi fixed bugs on the Intel i915 Graphics driver.

Martyn Welch joined Sebastian in improving the da9052 PMIC driver and also fixed the B850v3 clock assignment. Finally, Guillaume Tucker fixed an issue in the I2C device IDs that caused the bind of the syr82x regulators to fail on RK3288 boards.

Daniel Stone also helped us achieve a milestone in the DRM/KMS stack by fixing, updating and merging the patches for Framebuffer Modifiers, which were submitted by Intel's Ben Widawsky. These patches are an important step for supporting end-to-end graphics compression in open-source graphics drivers.


Here is the complete list of Collabora contributions:

Enric Balletbo i Serra (3):

Fabien Lahoudere (2):

Gabriel Krisman Bertazi (2):

Guillaume Tucker (1):

Gustavo Padovan (3):

Martyn Welch (2):

Romain Perier (14):

Sebastian Reichel (16):

Thierry Escande (3):


Reviewed-by:

Daniel Stone (5):

Gabriel Krisman Bertazi (2):

Gustavo Padovan (4):

Helen Koike (1):

Peter Senna Tschudin (7):

Sebastian Reichel (16):

Tomeu Vizoso (1):


Signed-off-by:

Daniel Stone (6):

Enric Balletbo i Serra (2):

Gustavo Padovan (9):

Romain Perier (2):

Sebastian Reichel (40):

Thierry Escande (5):


Tested-by:

Peter Senna Tschudin (4):


Suggested-by:

Sebastian Reichel (1):


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