[PATCH 0/7] media: hantro: add Allwinner H6 support

From: Jernej Skrabec
Date: Mon Nov 22 2021 - 13:47:28 EST

Hi everyone!

Here is patchset which adds support for Hantro G2 core found in Allwinner
H6 SoC. It is slightly older core, so it needs few quirks to be
1. It uses slightly different register layout in some cases. However, those
differences are small, so it makes sense only to add quirks.
2. It doesn't use ring buffer for bitstream as newer variants.
3. It needs double buffering to be enabled in order to work correctly.
4. postproc must be enabled at the end of the job. It seems that core has
some issues with latching register values if postproc registers are set
at the beginning of the job

legacy_regs quirk could be split into 3, like legacy_regs, ring_buffer and
late_postproc, but I didn't see the need for that. I examined vendor
sources at [1] and it suggests that legacy_regs implies no ring buffer.

It's also unclear if core supports HEVC decoding or not. This can be
implemented later. VP9 10-bit decoding support is mentioned in manual, but
it doesn't work at the moment. This will be addressed later.

Please take a look.

Best regards,

[1] https://github.com/CliveLau1990/imx-vpu-hantro

Jernej Skrabec (7):
media: hantro: add support for reset lines
media: hantro: vp9: use double buffering if needed
media: hantro: vp9: add support for legacy register set
media: hantro: move postproc enablement for old cores
media: dt-bindings: allwinner: document H6 Hantro G2 binding
media: hantro: Add support for Allwinner H6
arm64: dts: allwinner: h6: Add Hantro G2 node

.../media/allwinner,sun50i-h6-vpu-g2.yaml | 64 +++++++++++
arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 9 ++
drivers/staging/media/hantro/Kconfig | 10 +-
drivers/staging/media/hantro/Makefile | 3 +
drivers/staging/media/hantro/hantro.h | 7 ++
drivers/staging/media/hantro/hantro_drv.c | 27 ++++-
drivers/staging/media/hantro/hantro_g2_regs.h | 20 ++++
.../staging/media/hantro/hantro_g2_vp9_dec.c | 76 ++++++++++---
drivers/staging/media/hantro/hantro_hw.h | 1 +
drivers/staging/media/hantro/sunxi_vpu_hw.c | 104 ++++++++++++++++++
10 files changed, 301 insertions(+), 20 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/allwinner,sun50i-h6-vpu-g2.yaml
create mode 100644 drivers/staging/media/hantro/sunxi_vpu_hw.c