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[v13,00/18] drm: Add Samsung MIPI DSIM bridge

Message ID 20230227113925.875425-1-jagan@amarulasolutions.com
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Series drm: Add Samsung MIPI DSIM bridge | expand


Jagan Teki Feb. 27, 2023, 11:39 a.m. UTC
This series supports common bridge support for Samsung MIPI DSIM
which is used in Exynos and i.MX8MM SoC's.

The final bridge supports both the Exynos and i.MX8M Mini/Nano/Plus.

Patch 0001 - 0004: find child DSI bridge and panel

Patch 0005 - 0006: optional PHY, PMS_P offset

Patch 0007       : introduce hw_type

Patch 0008	 : fixing host init

Patch 0009	 : atomic_check

Patch 0010	 : input_bus_flags

Patch 0011	 : atomic_get_input_bus_fmts

Patch 0012 - 0013: component vs bridge

Patch 0014	 : DSIM bridge

Patch 0015 - 0016: i.MX8M Mini/Nano

Patch 0017 - 0018: i.MX8M Plus

Changes for v13:
- remove devm call for DSI panel or bridge finding
- rebased on drm-misc-next

Changes for v12:
- collect RB from Marek V
- add te_irq_handler hook
- fix comments from Marek V
- update atomic_get_input_bus_fmts logic

Changes for v11:
- collect RB from Frieder Schrempf
- collect ACK from Rob
- collect ACK from Robert
- fix BIT macro replacements
- fix checkpatch --strict warnings
- fix unneeded commit text
- drop extra lines

Changes for v10:
- rebase on drm-misc-next
- add drm_of_dsi_find_panel_or_bridge
- add devm_drm_of_dsi_get_bridge
- fix host initialization (Thanks to Marek Szyprowski)
- rearrange the tiny patches for easy to review
- update simple names for enum hw_type
- add is_hw_exynos macro
- rework on commit messages

Changes for v9:
- rebase on drm-misc-next
- drop drm bridge attach fix for Exynos
- added prepare_prev_first flag
- added pre_enable_prev_first flag
- fix bridge chain order for exynos
- added fix for Exynos host init for first DSI transfer
- return MEDIA_BUS_FMT_RGB888_1X24 output_fmt if supported output_fmt
  list is unsupported.
- added MEDIA_BUS_FMT_YUYV10_1X20
- added MEDIA_BUS_FMT_YUYV12_1X24

Changes for v8:
* fixed comment lines
* fixed commit messages
* fixed video mode bits
* collect Marek Ack
* fixed video mode bit names
* update input formats logic
* added imx8mplus support

Changes for v7:
* fix the drm bridge attach chain for exynos drm dsi driver
* fix the hw_type checking logic

Changes for v6:
* handle previous bridge for exynos dsi while attaching bridge 

Changes for v5:
* bridge changes to support multi-arch
* updated and clear commit messages
* add hw_type via plat data
* removed unneeded quirk
* rebased on linux-next

Changes for v4:
* include Inki Dae in MAINTAINERS
* remove dsi_driver probe in exynos_drm_drv to support multi-arch build
* update init handling to ensure host init done on first cmd transfer

Changes for v3:
* fix the mult-arch build
* fix dsi host init
* updated commit messages

Changes for v2:
* fix bridge handling
* fix dsi host init
* correct the commit messages

Tested in Engicam i.Core MX8M Mini SoM.



Any inputs?

Jagan Teki (16):
  drm: of: Lookup if child node has DSI panel or bridge
  drm: bridge: panel: Support nodrm case for drmm_panel_bridge_add
  drm: exynos: dsi: Drop explicit call to bridge detach
  drm: exynos: dsi: Switch to DSI panel or bridge find helper
  drm: exynos: dsi: Mark PHY as optional
  drm: exynos: dsi: Add platform PLL_P (PMS_P) offset
  drm: exynos: dsi: Introduce hw_type platform data
  drm: exynos: dsi: Add atomic check
  drm: exynos: dsi: Add input_bus_flags
  drm: exynos: dsi: Add atomic_get_input_bus_fmts
  drm: exynos: dsi: Consolidate component and bridge
  drm: exynos: dsi: Add host helper for te_irq_handler
  drm: bridge: Generalize Exynos-DSI driver into a Samsung DSIM bridge
  dt-bindings: display: exynos: dsim: Add NXP i.MX8M Mini/Nano support
  drm: bridge: samsung-dsim: Add i.MX8M Mini/Nano support
  dt-bindings: display: exynos: dsim: Add NXP i.MX8M Plus support

Marek Szyprowski (1):
  drm: exynos: dsi: Handle proper host initialization

Marek Vasut (1):
  drm: bridge: samsung-dsim: Add i.MX8M Plus support

 .../bindings/display/exynos/exynos_dsim.txt   |    2 +
 MAINTAINERS                                   |    9 +
 drivers/gpu/drm/bridge/Kconfig                |   12 +
 drivers/gpu/drm/bridge/Makefile               |    1 +
 drivers/gpu/drm/bridge/panel.c                |    7 +
 drivers/gpu/drm/bridge/samsung-dsim.c         | 1933 +++++++++++++++++
 drivers/gpu/drm/drm_of.c                      |  112 +-
 drivers/gpu/drm/exynos/Kconfig                |    1 +
 drivers/gpu/drm/exynos/exynos_drm_dsi.c       | 1819 +---------------
 include/drm/bridge/samsung-dsim.h             |  115 +
 include/drm/drm_of.h                          |   12 +
 11 files changed, 2271 insertions(+), 1752 deletions(-)
 create mode 100644 drivers/gpu/drm/bridge/samsung-dsim.c
 create mode 100644 include/drm/bridge/samsung-dsim.h


Marek Vasut Feb. 27, 2023, 2:12 p.m. UTC | #1
On 2/27/23 12:39, Jagan Teki wrote:
> Finding the right input bus format throughout the pipeline is hard
> so add atomic_get_input_bus_fmts callback and initialize with the
> proper input format from list of supported output formats.
> This format can be used in pipeline for negotiating bus format between
> the DSI-end of this bridge and the other component closer to pipeline
> components.
> List of Pixel formats are taken from,
> AN13573 i.MX 8/RT MIPI DSI/CSI-2, Rev. 0, 21 March 2022
> 3.7.4 Pixel formats
> Table 14. DSI pixel packing formats
> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

Reviewed-by: Marek Vasut <marex@denx.de>