Hello, This series adds support for the Encoder Buffer to the Allegro DVT driver. The Encoder Buffer (the reference manual sometime also uses the terms L2 cache or Prefetch Buffer) acts as a cache for the reference frames. The Encoder Buffer reduces the read accesses of the encoder on its AXI ports. The size of the buffer is configurable with Vivado before the FPGA bitstream is synthesized, but not during runtime. The driver is responsible for configuring the firmware to the configured size of the Encoder Buffer. Patch 1 adds a check to make sure that the response mailbox is initialized before the interrupt handler tries to handle mails from this mailbox. This should never happen, but having the check does not hurt and should make the checkers happy. Patch 2 fixes the removal of the module when the firmware initialization has failed. Patch 3 and 4 integrate the Allegro DVT driver with the Xilinx VCU driver, which handles the glue code between the encoder and the FPGA. Patch 5 and 6 add support for the actual Encoder Buffer and add a control to explicitly disable it per encoding context, because the Encoder Buffer might have a negativ impact on the encoding quality. This series is independent of my other series regarding the NAL unit fixes. Michael Michael Tretter (6): media: allegro: ignore interrupt if mailbox is not initialized media: allegro: fix module removal if initialization failed media: allegro: lookup VCU settings media: allegro: add pm_runtime support media: allegro: add encoder buffer support media: allegro: add control to disable encoder buffer .../media/platform/allegro-dvt/allegro-core.c | 229 +++++++++++++++++- .../media/platform/allegro-dvt/allegro-mail.c | 19 +- .../media/platform/allegro-dvt/allegro-mail.h | 10 +- include/uapi/linux/v4l2-controls.h | 5 + 4 files changed, 235 insertions(+), 28 deletions(-) -- 2.30.2
