[PATCH 00/14] Allwinner MIPI CSI-2 support for A31/V3s/A83T

Paul Kocialkowski
2020-10-23T18:11:17Z

This series introduces support for MIPI CSI-2, with the A31 controller that is
found on most SoCs (A31, V3s and probably V5) as well as the A83T-specific
controller. While the former uses the same MIPI D-PHY that is already supported
for DSI, the latter embeds its own D-PHY.

In order to distinguish the use of the D-PHY between Rx mode (for MIPI CSI-2)
and Tx mode (for MIPI DSI), a submode is introduced for D-PHY in the PHY API.
This allows adding Rx support in the A31 D-PHY driver.

A few changes and fixes are applied to the A31 CSI controller driver, in order
to support the MIPI CSI-2 use-case.

Follows is the V4L2 device topology representing the interactions between
the MIPI CSI-2 sensor, the MIPI CSI-2 controller (which controls the D-PHY)
and the CSI controller:
- entity 1: sun6i-csi (1 pad, 1 link)
type Node subtype V4L flags 0
device node name /dev/video0
pad0: Sink
<- "sun6i-mipi-csi2":1 [ENABLED,IMMUTABLE]

- entity 5: sun6i-mipi-csi2 (2 pads, 2 links)
type V4L2 subdev subtype Unknown flags 0
pad0: Sink
<- "ov5648 0-0036":0 [ENABLED,IMMUTABLE]
pad1: Source
-> "sun6i-csi":0 [ENABLED,IMMUTABLE]

- entity 8: ov5648 0-0036 (1 pad, 1 link)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev0
pad0: Source
[fmt:SBGGR8_1X8/640x480@1/30 field:none colorspace:raw xfer:none ycbcr:601 quantization:full-range]
-> "sun6i-mipi-csi2":0 [ENABLED,IMMUTABLE]

Happy reviewing!

Paul Kocialkowski (14):
phy: Distinguish between Rx and Tx for MIPI D-PHY with submodes
phy: allwinner: phy-sun6i-mipi-dphy: Support D-PHY Rx mode for MIPI
CSI-2
media: sun6i-csi: Support an optional dedicated memory pool
media: sun6i-csi: Fix the image storage bpp for 10/12-bit Bayer
formats
media: sun6i-csi: Only configure the interface data width for parallel
media: sun6i-csi: Support feeding from the MIPI CSI-2 controller
dt-bindings: media: i2c: Add A31 MIPI CSI-2 bindings documentation
media: sunxi: Add support for the A31 MIPI CSI-2 controller
ARM: dts: sun8i: v3s: Add CSI0 camera interface node
ARM: dts: sun8i: v3s: Add MIPI D-PHY and MIPI CSI-2 interface nodes
dt-bindings: media: i2c: Add A83T MIPI CSI-2 bindings documentation
media: sunxi: Add support for the A83T MIPI CSI-2 controller
ARM: dts: sun8i: a83t: Add MIPI CSI-2 controller node
media: sunxi: sun8i-a83t-mipi-csi2: Avoid using the (unsolicited)
interrupt

.../media/allwinner,sun6i-a31-mipi-csi2.yaml | 168 +++++
.../media/allwinner,sun8i-a83t-mipi-csi2.yaml | 158 +++++
arch/arm/boot/dts/sun8i-a83t.dtsi | 26 +
arch/arm/boot/dts/sun8i-v3s.dtsi | 62 ++
drivers/media/platform/sunxi/Kconfig | 2 +
drivers/media/platform/sunxi/Makefile | 2 +
.../platform/sunxi/sun6i-csi/sun6i_csi.c | 54 +-
.../platform/sunxi/sun6i-csi/sun6i_csi.h | 20 +-
.../platform/sunxi/sun6i-mipi-csi2/Kconfig | 11 +
.../platform/sunxi/sun6i-mipi-csi2/Makefile | 4 +
.../sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c | 635 +++++++++++++++++
.../sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.h | 116 +++
.../sunxi/sun8i-a83t-mipi-csi2/Kconfig | 11 +
.../sunxi/sun8i-a83t-mipi-csi2/Makefile | 4 +
.../sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c | 92 +++
.../sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h | 39 ++
.../sun8i_a83t_mipi_csi2.c | 660 ++++++++++++++++++
.../sun8i_a83t_mipi_csi2.h | 196 ++++++
drivers/phy/allwinner/phy-sun6i-mipi-dphy.c | 164 ++++-
drivers/staging/media/rkisp1/rkisp1-isp.c | 3 +-
include/linux/phy/phy-mipi-dphy.h | 13 +
21 files changed, 2408 insertions(+), 32 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml
create mode 100644 Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-mipi-csi2.yaml
create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/Kconfig
create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/Makefile
create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c
create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.h
create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig
create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Makefile
create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c
create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h
create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c
create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.h

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2.28.0