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media: ti: Add CSI2RX support for J721E

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TI's J721E uses the Cadence CSI2RX and DPHY peripherals to facilitate
capture over a CSI-2 bus.

The Cadence CSI2RX IP acts as a bridge between the TI specific parts and
the CSI-2 protocol parts. TI then has a wrapper on top of this bridge
called the SHIM layer. It takes in data from stream 0, repacks it, and
sends it to memory over PSI-L DMA.

This driver acts as the "front end" to V4L2 client applications. It
implements the required ioctls and buffer operations, passes the
necessary calls on to the bridge, programs the SHIM layer, and performs
DMA via the dmaengine API to finally return the data to a buffer
supplied by the application.

Co-developed-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Co-developed-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Tested-by: Vaishnav Achath <vaishnav.a@ti.com>
Tested-by: Julien Massot <julien.massot@collabora.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Jai Luthra <j-luthra@ti.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Jai Luthra 2023-10-09 18:39:39 +05:30 committed by Hans Verkuil
parent ca5b901c18
commit b4a3d877dc
5 changed files with 1181 additions and 0 deletions
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7
MAINTAINERS
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@ -21594,6 +21594,13 @@ F: Documentation/devicetree/bindings/media/i2c/ti,ds90*
F: drivers/media/i2c/ds90*
F: include/media/i2c/ds90*
TI J721E CSI2RX DRIVER
M: Jai Luthra <j-luthra@ti.com>
L: linux-media@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
F: drivers/media/platform/ti/j721e-csi2rx/
TI KEYSTONE MULTICORE NAVIGATOR DRIVERS
M: Nishanth Menon <nm@ti.com>
M: Santosh Shilimkar <ssantosh@kernel.org>

12
drivers/media/platform/ti/Kconfig
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@ -63,6 +63,18 @@ config VIDEO_TI_VPE_DEBUG
help
Enable debug messages on VPE driver.
config VIDEO_TI_J721E_CSI2RX
tristate "TI J721E CSI2RX wrapper layer driver"
depends on VIDEO_DEV && VIDEO_V4L2_SUBDEV_API
depends on MEDIA_SUPPORT && MEDIA_CONTROLLER
depends on (PHY_CADENCE_DPHY_RX && VIDEO_CADENCE_CSI2RX) || COMPILE_TEST
depends on ARCH_K3 || COMPILE_TEST
select VIDEOBUF2_DMA_CONTIG
select V4L2_FWNODE
help
Support for TI CSI2RX wrapper layer. This just enables the wrapper driver.
The Cadence CSI2RX bridge driver needs to be enabled separately.
source "drivers/media/platform/ti/am437x/Kconfig"
source "drivers/media/platform/ti/davinci/Kconfig"
source "drivers/media/platform/ti/omap/Kconfig"

1
drivers/media/platform/ti/Makefile
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@ -3,5 +3,6 @@ obj-y += am437x/
obj-y += cal/
obj-y += vpe/
obj-y += davinci/
obj-y += j721e-csi2rx/
obj-y += omap/
obj-y += omap3isp/

2
drivers/media/platform/ti/j721e-csi2rx/Makefile Normal file
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@ -0,0 +1,2 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_VIDEO_TI_J721E_CSI2RX) += j721e-csi2rx.o

1159
drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c Normal file
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