The first major release of Linux for the year 2019 was made available earlier this week, and with it came a new version number: 5.0. However, as Linus pointed out, while this version change might seem significant, Linux doesn't do feature-based releases, and "it doesn't mean anything more than that the 4.x numbers started getting big enough that I ran out of fingers and toes".

As usual, Collabora was active in this latest release, with 9 developers authoring a total of 45 patches, 47 Signed-off-by tags and 9 Reviewed-by tags. Here's a look at some of the highlights:

Graphics

• Emil Velikov added a render node for the VGEM DRM driver, which fulfills the original intent of the driver of being a virtual render node. Previously we were using it as primary/master node for the render capability. This change clarify the role for users.
• Robert Foss and Gustavo Padovan enabled Explicit Synchronization of dma-bufs for virtio_gpu, the virtual display/gpu driver used by qemu for example.

Media

• Ezequiel Gracia has enabled hardware accelerated JPEG encoding on Rockchip SoCs (rk3288 and rk3399).
• Helen Koike continued improving the vimc driver.

ChromeOS EC

• Enric Balletbo i Serra, long time ChromeOS EC developer, was appointed co-maintainer of the Chrome platform support. This accompanies a change in the Chrome development model towards an upstream-first policy.

Here and there...

• As a mainainter of the Power Supply sub-system, Sebastian Reichel removed the use of deprecated POWER_SUPPLY_TYPE_USB_* flag in gpio-charger. He added support for custom sysfs attributes and cleanup existing drivers from a race condition that result in fixing attributes that are not properly registered to udev.

Here is the complete list of the contributions made by Collabora:

Emil Velikov (4):

• drm: BUG_ON if passing NULL parent to drm_dev_init
• drm/virtio: document drm_dev_set_unique workaround
• drm/vkms: provide a parent device to drm_dev_init()
• drm/vgem: create a render node for vgem

Enric Balletbo i Serra (7):

• drm/rockchip: psr: do not dereference encoder before it is null checked.
• drm/bridge: analogix_dp: Fix misleading indentation reported by smatch
• arm64: dts: rockchip: Use default brightness table for rk3399-gru
• i2c: i2c-cros-ec-tunnel: Switch to SPDX identifier.
• mfd: cros_ec_dev: Add missing mfd_remove_devices() call in remove
• MAINTAINERS: add maintainers for ChromeOS EC sub-drivers
• arm64: dts: rockchip: fix graph_port warning on rk3399 bob kevin and excavator

Ezequiel Garcia (11):

• media: mem2mem: Require capture and output mutexes to match
• media: v4l2-ioctl.c: Simplify locking for m2m devices
• media: v4l2-mem2mem: Avoid calling .device_run in v4l2_m2m_job_finish
• media: cedrus: Get rid of interrupt bottom-half
• media: dt-bindings: Document the Rockchip VPU bindings
• media: add Rockchip VPU JPEG encoder driver
• arm64: dts: rockchip: add VPU device node for RK3399
• ARM: dts: rockchip: add VPU device node for RK3288
• kref/kobject: Improve documentation
• media: v4l2-ioctl: Zero v4l2_plane_pix_format reserved fields
• mmc: jz4740: rework pre_req/post_req implementation

Gabriel Krisman Bertazi (1):

• drm: panel-orientation-quirks: Do rotation quirk for new GPD Win2 FW

Gustavo Padovan (1):

• drm/virtio: bump driver version after explicit synchronization addition

Helen Koike (2):

• media: vimc: fix start stream when link is disabled
• configfs: fix wrong name of struct in documentation

Robert Foss (3):

• drm/virtio: add virtio_gpu_alloc_fence()
• drm/virtio: add uapi for in and out explicit fences
• drm/virtio: add in/out fence support for explicit synchronization

Sebastian Reichel (16):

• Merge tag 'psy-mfd-axp813-immutable-for-v4.21-signed' into psy-next
• power: supply: core: add support for custom sysfs attributes
• power: supply: bq2415x: fix race-condition in sysfs registration
• power: supply: ds2780: fix race-condition in sysfs registration
• power: supply: ds2781: fix race-condition in sysfs registration
• power: supply: lp8788: fix race-condition in sysfs registration
• power: supply: bq24190_charger: fix race-condition in sysfs registration
• power: supply: bq24257: fix race-condition in sysfs registration
• power: supply: charger-manager: simplify generation of sysfs attribute group name
• power: supply: charger-manager: fix race-condition in sysfs registration
• power: supply: pcf50633: fix race-condition in sysfs registration
• power: supply: ds2780: fix race-condition in bin attribute registration
• power: supply: ds2781: fix race-condition in bin attribute registration
• power: supply: ds2780: switch to devm_power_supply_register
• power: supply: ds2781: switch to devm_power_supply_register
• power: supply: gpio-charger: Do not use deprecated POWER_SUPPLY_TYPE_USB_*

Reviewed-by:

Emil Velikov (4):

• drm/virtio: bump driver version after explicit synchronization addition
• drm/virtio: add in/out fence support for explicit synchronization
• drm/virtio: add uapi for in and out explicit fences
• drm/vgem: Fix typo in driver feature flags

Robert Foss (2):

• drm/virtio: virtio_gpu_cmd_resource_create_3d: drop unused fence arg
• drm/virtio: fence: pass plain pointer

Sebastian Reichel (3):

• mfd: tps65218: Use devm_regmap_add_irq_chip and clean up error path in probe()
• ARM: dts: Fix hsi gdd range for omap4
• dt-bindings: power: supply: axp20x: add AXP813 AC power DT binding

Acked-by:

Ezequiel Garcia (2):

• media: rockchip vpu: remove some unused vars
• media: videobuf2-v4l2: drop WARN_ON in vb2_warn_zero_bytesused()

Helen Koike (1):

• media: vimc: constify structures stored in fields of v4l2_subdev_ops structure

Pekka Paalanen (1):

• drm: Document variable refresh properties

Sebastian Reichel (1):

• MAINTAINERS: add maintainers for ChromeOS EC sub-drivers

Signed-off-by:

Boris Brezillon (2):

• mtd: powernv_flash: Fix device registration error
• mtd: Use mtd->name when registering nvmem device

Emil Velikov (2):

• drm/vgem: Fix typo in driver feature flags
• drm/vgem: Fix vgem_init to get drm device available.

Enric Balletbo i Serra (2):

• kref/kobject: Improve documentation
• MAINTAINERS: platform/chrome: Add Enric as a maintainer

Ezequiel Garcia (1):

• media: v4l2-mem2mem: Simplify exiting the function in __v4l2_m2m_try_schedule

Helen Koike (1):

• media: vimc: fix start stream when link is disabled

Sebastian Reichel (39):

• power: supply: bq25890: fix BAT_COMP field definition
• power: supply: sc27xx: Save last battery capacity
• power: reset: at91-poweroff: move shdwc related data to one structure
• power: supply: sc27xx: Add suspend/resume interfaces
• power: supply: sc27xx: Add fuel gauge low voltage alarm
• power: supply: sc27xx: Add fuel gauge calibration
• dt-bindings: power: supply: Add nvmem properties to calibrate FGU
• power: supply: sc2731_charger: Free battery information
• power: supply: sc2731_charger: Avoid repeated charge/discharge
• power: supply: sc2731_charger: Add charger status detection
• power: supply: sc2731_charger: Add one work to charge/discharge
• power: reset: at91-poweroff: remove at91_ramc_of_match
• power: reset: at91-poweroff: use one poweroff function for at91-poweroff
• power: supply: bq24190_charger: add support for bq24196 variant
• power: supply: bq24190_charger: add extcon support for USB OTG
• power: supply: bq24190_charger: add of_match for usb-otg-vbus regulator
• power: supply: bq24190_charger: add support for bq24192 variant
• dt-bindings: power: supply: bq24190_charger: add bq24192 and usb-otg-vbus
• power: reset: ocelot: switch the SI to boot mode
• power: reset: gpio-poweroff: add ability to specific active and inactive delays
• power: supply: charger-manager: Make code more readable
• power: supply: charger-manager: Fix incorrect return value
• power: supply: charger-manager: Fix some misspelled words
• power: supply: charger-manager: Remove unused index counting
• power: supply: cpcap-charger: clean an indentation issue, remove tab
• power: supply: add AC power supply driver for AXP813
• dt-bindings: power: supply: axp20x: add AXP813 AC power DT binding
• power: supply: axp288: use the BIT() macro
• power: supply: axp20x: add missing include bitops.h
• power: supply: cpcap-battery: make array cpcap_battery_irqs static, shrinks object size
• HSI: omap_ssi: Change to use DEFINE_SHOW_ATTRIBUTE macro
• power: supply: olpc_battery: correct the temperature units
• power/supply: fix sc27xx_fuel_gauge build errors
• power: supply: Add Spreadtrum SC27XX fuel gauge unit driver
• dt-bindings: power: Add Spreadtrum SC27XX fuel gauge unit documentation
• power: supply: core: Add some helpers to use the battery OCV capacity table
• dt-bindings: power: Introduce properties to present the battery OCV capacity table
• power: supply: core: Add one field to present the battery internal resistance
• dt-bindings: power: Introduce one property to present the battery internal resistance

Tested-by:

Enric Balletbo i Serra (1):

• arm64: dts: rockchip: add rk3399 SPI DMAs