| Message ID | 20210908130315.3295253-1-m.tretter@pengutronix.de |
|---|---|
| Headers | show |
| Series | media: allegro: Add support for the Encoder Buffer | expand |
On Wed, 08 Sep 2021 15:03:09 +0200, Michael Tretter wrote: > This series adds support for the Encoder Buffer to the Allegro DVT driver. Gentle Ping. Michael > > 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 > >