[v7,00/12] drm: sun4i: Convert Allwinner DSI to bridge
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Message ID 20230329131615.1328366-1-jagan@amarulasolutions.com
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  • drm: sun4i: Convert Allwinner DSI to bridge
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Jagan Teki March 29, 2023, 1:16 p.m. UTC 
This is v7 revision of converting Allwinner DSI to brige driver.

Patch 1 and 2 implements drmm_of_dsi_get_bridge which is required to
lookup the DSI sink device represented either child or OF-graph port or
ports node. This is essential as not to break the existing bindings
which indeed uses child node represention for DSI sink devices.

Patch 3 to 7 enables the prepare_prev_first flag for essential panels
which effects sun6i-mipi-dsi host init order sequencing.

Patch 8 and 9 added endpoint 0 to dsi_in_tcon0 of A33 and A64 which is
required for I2C-Configured bridges to represent.

Patch 10 and 11 implements enable_next_first flag, which is essential
If the DSI host enables with the @enable_next_first flag then the
@enable for the DSI sink will be called first before the @enable of
the DSI host. This alter bridge init order makes sure that the MIPI-DCS
commands send first and then switch to the HS mode properly by DSI host.

Patch 12 is final patch bridge conversion.

Series has been tested in DSI Panel, DSI Bridge and I2C-Configured DSI
Bridge.

v6:
https://lore.kernel.org/all/20211210111711.2072660-1-jagan@amarulasolutions.com/
v5:
https://lore.kernel.org/all/20211122065223.88059-4-jagan@amarulasolutions.com/

Any inputs?
Jagan.

Jagan Teki (12):
  drm: of: Lookup if child node has DSI panel or bridge
  drm: bridge: panel: Implement drmm_of_dsi_get_bridge helper
  drm: panel: feiyang-fy07024di26a30d: Enable prepare_prev_first flag
  drm: panel: sitronix-st7701: Enable prepare_prev_first for ts8550b
  drm: panel: sitronix-st7703: Enable prepare_prev_first for xbd599
  drm: panel: feixin-k101-im2ba02: Enable prepare_prev_first flag
  drm: panel: ilitek-ili9881c: Enable prepare_prev_first for k101_im2byl02
  ARM: dts: sun8i: a33: Add endpoint@0 to dsi_in_tcon0
  arm64: dts: rockchip: a64: Add endpoint@0 to dsi_in_tcon0
  drm/bridge: Implement enable_next_first to alter bridge init order
  drm/bridge: Document bridge init order with enable_next_first
  drm: sun4: dsi: Convert to bridge driver

 arch/arm/boot/dts/sun8i-a33.dtsi              |   6 +-
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi |   6 +-
 drivers/gpu/drm/bridge/panel.c                |  34 ++++
 drivers/gpu/drm/drm_bridge.c                  | 186 +++++++++++++++---
 drivers/gpu/drm/drm_of.c                      | 112 +++++++++--
 .../gpu/drm/panel/panel-feixin-k101-im2ba02.c |   1 +
 .../drm/panel/panel-feiyang-fy07024di26a30d.c |   1 +
 drivers/gpu/drm/panel/panel-ilitek-ili9881c.c |   3 +
 drivers/gpu/drm/panel/panel-sitronix-st7701.c |   3 +
 drivers/gpu/drm/panel/panel-sitronix-st7703.c |   3 +
 drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c        | 143 ++++++--------
 drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h        |  10 +-
 include/drm/drm_bridge.h                      |  18 ++
 include/drm/drm_of.h                          |  12 ++
 14 files changed, 399 insertions(+), 139 deletions(-)