tegra-video: add CSI support for Tegra20 and Tegra30

Add support for MIPI CSI device found in Tegra20 and Tegra30 SoC along
with a set of changes required for that.

---
Changes in v2:
- vi_sensor gated through csus
- TEGRA30_CLK_CLK_MAX moved to clk-tegra30
- adjusted commit titles and messages
- clk_register_clkdev dropped from pad clock registration
- removed tegra30-vi/vip and used tegra20 fallback
- added separate csi schema for tegra20-csi and tegra30-csi
- fixet number of VI channels
- adjusted tegra_vi_out naming
- fixed yuv_input_format to main_input_format
- MIPI calibration refsctored for Tegra114+ and added support for
  pre-Tegra114 to use CSI as a MIPI calibration device
- switched ENOMEM to EBUSY
- added check into tegra_channel_get_remote_csi_subdev
- moved avdd-dsi-csi-supply into CSI
- next_fs_sp_idx > next_fs_sp_value
- removed host1x_syncpt_incr from framecounted syncpoint
- csi subdev request moved before frame cycle

Changes in v3:
- tegra20 and tegra30 csi schema merged
- removed unneeded properties and requirements from schema
- improved vendor specific properties description
- added tegra20 csus parent mux
- improved commit descriptions
- redesigned MIPI-calibration to expose less SoC related data into header
- commit "staging: media: tegra-video: csi: add support for SoCs with integrated
  MIPI calibration" dropped as unneeded
- improved tegra_channel_get_remote_device_subdev logic
- avdd-dsi-csi-supply moved from vi to csi for p2597 and p3450-0000
- software syncpoint counters switched to direct reading
- adjusted planar formats offset calculation
---

Svyatoslav Ryhel (22):
  clk: tegra: set CSUS as vi_sensor's gate for Tegra20, Tegra30 and
    Tegra114
  dt-bindings: clock: tegra30: Add IDs for CSI pad clocks
  clk: tegra30: add CSI pad clock gates
  dt-bindings: display: tegra: document Tegra30 VI and VIP
  staging: media: tegra-video: expand VI and VIP support to Tegra30
  staging: media: tegra-video: vi: adjust get_selection op check
  staging: media: tegra-video: vi: add flip controls only if no source
    controls are provided
  staging: media: tegra-video: csi: move CSI helpers to header
  gpu: host1x: convert MIPI to use operation function pointers
  staging: media: tegra-video: vi: improve logic of source requesting
  staging: media: tegra-video: csi: move avdd-dsi-csi-supply from VI to
    CSI
  arm64: tegra: move avdd-dsi-csi-supply into CSI node
  staging: media: tegra-video: tegra20: set correct maximum width and
    height
  staging: media: tegra-video: tegra20: add support for second output of
    VI
  staging: media: tegra-video: tegra20: simplify format align
    calculations
  staging: media: tegra-video: tegra20: set VI HW revision
  staging: media: tegra-video: tegra20: increase maximum VI clock
    frequency
  staging: media: tegra-video: tegra20: expand format support with
    RAW8/10 and YUV422 1X16
  staging: media: tegra-video: tegra20: adjust luma buffer stride
  dt-bindings: display: tegra: document Tegra20 and Tegra30 CSI
  ARM: tegra: add CSI nodes for Tegra20 and Tegra30
  staging: media: tegra-video: add CSI support for Tegra20 and Tegra30

 .../display/tegra/nvidia,tegra20-csi.yaml     | 135 +++
 .../display/tegra/nvidia,tegra20-vi.yaml      |  19 +-
 .../display/tegra/nvidia,tegra20-vip.yaml     |   9 +-
 arch/arm/boot/dts/nvidia/tegra20.dtsi         |  19 +-
 arch/arm/boot/dts/nvidia/tegra30.dtsi         |  24 +-
 .../arm64/boot/dts/nvidia/tegra210-p2597.dtsi |   4 +-
 .../boot/dts/nvidia/tegra210-p3450-0000.dts   |   4 +-
 drivers/clk/tegra/clk-tegra114.c              |   7 +-
 drivers/clk/tegra/clk-tegra20.c               |  20 +-
 drivers/clk/tegra/clk-tegra30.c               |  21 +-
 drivers/gpu/drm/tegra/dsi.c                   |   1 +
 drivers/gpu/host1x/Makefile                   |   1 +
 drivers/gpu/host1x/dev.c                      |   2 +
 drivers/gpu/host1x/dev.h                      |   2 +
 drivers/gpu/host1x/mipi.c                     | 501 +----------
 drivers/gpu/host1x/tegra114-mipi.c            | 483 ++++++++++
 drivers/pinctrl/tegra/pinctrl-tegra20.c       |   7 +
 drivers/staging/media/tegra-video/Makefile    |   1 +
 drivers/staging/media/tegra-video/csi.c       |  66 +-
 drivers/staging/media/tegra-video/csi.h       |  16 +
 drivers/staging/media/tegra-video/tegra20.c   | 828 +++++++++++++++---
 drivers/staging/media/tegra-video/vi.c        |  56 +-
 drivers/staging/media/tegra-video/vi.h        |   9 +-
 drivers/staging/media/tegra-video/video.c     |   8 +-
 drivers/staging/media/tegra-video/vip.c       |   4 +-
 include/dt-bindings/clock/tegra30-car.h       |   3 +-
 include/linux/host1x.h                        |  10 -
 include/linux/tegra-mipi-cal.h                |  56 ++
 28 files changed, 1648 insertions(+), 668 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-csi.yaml
 create mode 100644 drivers/gpu/host1x/tegra114-mipi.c
 create mode 100644 include/linux/tegra-mipi-cal.h

-- 
2.48.1