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Subject[RFC PATCH v2 00/18] Support for Tegra video capture from external sensor
This series adds support for video capture from external camera sensor to
Tegra video driver.

Jetson TX1 has camera expansion connector and supports custom camera module
designed as per TX1 design specification.

This series also enables camera capture support for Jetson Nano which has
Raspberry PI camera header.

This series is tested with IMX219 camera sensor.

This series include,

VI I2C related fixes
- Camera sensor programming happens through VI I2C which is on host1x bus.
- These patches includes device tree and I2C driver fixes for VI I2C.

Tegra video driver updates
- TPG Vs Non-TPG based on Kconfig
- Support for external sensor video capture based on device graph from DT.
- Support for selection ioctl operations
- Tegra MIPI CSI pads calibration
- CSI T-CLK and T-HS settle time computation based on clock rates.

Host1x driver updates
- Adds API to allow creating mipi device for specific device node.
- Splits MIPI pads calibrate start and waiting for calibration to be done.

Device tree updates
- Adds camera connector 2V8, 1V8, 1V2 regulator supplies to Jetson TX1 DT.
- Enabled VI and CSI support in Jetson Nano DT.

Delta between patch versions:

[v2]: Includes below changes based on v1 feedback
- dt-binding document and the driver update for device graph to use
separate ports for sink endpoint and source endpoint for csi.
- Use data-lanes endpoint property for csi.
- Update tegra_mipi_request() to take device node pointer argument
rather than adding extra API.
- Remove checking for clk pointer before clk_disable.

Sowjanya Komatineni (18):
dt-bindings: i2c: tegra: Document Tegra210 VI I2C clocks and
arm64: tegra: Add missing clocks and power-domains to Tegra210 VI I2C
i2c: tegra: Don't mark VI I2C as IRQ safe runtime PM
i2c: tegra: Fix the error path in tegra_i2c_runtime_resume
i2c: tegra: Fix runtime resume to re-init VI I2C
i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c
media: tegra-video: Fix channel format alignment
media: tegra-video: Enable TPG based on kernel config
media: tegra-video: Update format lookup to offset based
dt-bindings: tegra: Update VI and CSI bindings with port info
media: tegra-video: Add support for external sensor capture
media: tegra-video: Add support for selection ioctl ops
gpu: host1x: mipi: Update tegra_mipi_request() to be node based
gpu: host1x: mipi: Split tegra_mipi_calibrate and tegra_mipi_wait
media: tegra-video: Add CSI MIPI pads calibration
media: tegra-video: Compute settle times based on the clock rate
arm64: tegra: jetson-tx1: Add camera supplies
arm64: tegra: Enable Tegra VI CSI support for Jetson Nano

.../display/tegra/nvidia,tegra20-host1x.txt | 92 ++-
.../devicetree/bindings/i2c/nvidia,tegra20-i2c.txt | 19 +-
arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 41 ++
arch/arm64/boot/dts/nvidia/tegra210-p3450-0000.dts | 10 +
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 6 +
drivers/gpu/drm/tegra/dsi.c | 9 +-
drivers/gpu/host1x/mipi.c | 30 +-
drivers/i2c/busses/i2c-tegra.c | 39 +-
drivers/staging/media/tegra-video/Kconfig | 7 +
drivers/staging/media/tegra-video/csi.c | 245 ++++++-
drivers/staging/media/tegra-video/csi.h | 8 +
drivers/staging/media/tegra-video/tegra210.c | 25 +-
drivers/staging/media/tegra-video/vi.c | 770 +++++++++++++++++++--
drivers/staging/media/tegra-video/vi.h | 23 +-
drivers/staging/media/tegra-video/video.c | 23 +-
include/linux/host1x.h | 4 +-
16 files changed, 1251 insertions(+), 100 deletions(-)


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