[PATCHv2 00/56] drm/omap: Convert DSI code to use drm_mipi_dsi and drm_panel

[Sebastian Reichel]

This updates the existing omapdrm DSI code, so that it uses
common drm_mipi_dsi API and drm_panel.

The patchset has been tested with Droid 4 using Linux console, X.org and
Weston. The patchset is based on Laurent Pinchartl's patch series [0]
and removes the last custom panel driver, so quite a few cleanups on the
omapdrm codebase were possible.

[0] [PATCH v7 00/54] drm/omap: Replace custom display drivers with drm_bridge and drm_panel
    https://lore.kernel.org/dri-devel/20200222150106.22919-1-laurent.pinchart@ideasonboard.com/
    git://linuxtv.org/pinchartl/media.git omapdrm/bridge/devel

I pushed this patchset into the following branch:

git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-n900.git omapdrm/bridge/devel-with-dsi

The previous version of this patchset has been sent quite some time ago.
This version has been rebased and required cleaning up most of the
hacks. I do not have a detailed changelog, but quite a few things
changed. I decided against doing anything special for the DT change
(adding DSI channel number), since only 3 devices are affected. It is
quite likely, that all developers of those devices update DT together
with kernel for those devices. My suggestion is to merge the first two
patches ASAP and backport to stable, since it does not affect old
kernels and the change is rather small.

RFCv1: https://lore.kernel.org/dri-devel/20191117023946.VjCC3yE08DMx7JIKxNagPoT5et7WTnKGVV6MtOtB9Ro@z/

-- Sebastian

Sebastian Reichel (56):
  ARM: dts: omap: add channel to DSI panels
  ARM: dts: omap4-droid4: add panel compatible
  Revert "drm/omap: dss: Remove unused omap_dss_device operations"
  omap/drm: drop unused dsi.configure_pins
  drm/omap: dsi: use MIPI_DSI_FMT_* instead of OMAP_DSS_DSI_FMT_*
  drm/omap: constify write buffers
  drm/omap: dsi: add generic transfer function
  drm/omap: panel-dsi-cm: convert to transfer API
  drm/omap: dsi: unexport specific data transfer functions
  drm/omap: dsi: drop virtual channel logic
  drm/omap: dsi: simplify write function
  drm/omap: dsi: simplify read functions
  drm/omap: dsi: switch dsi_vc_send_long/short to mipi_dsi_msg
  drm/omap: dsi: introduce mipi_dsi_host
  drm/omap: panel-dsi-cm: use DSI helpers
  drm/omap: dsi: request VC via mipi_dsi_attach
  drm/omap: panel-dsi-cm: drop hardcoded VC
  drm/omap: panel-dsi-cm: use common MIPI DCS 1.3 defines
  drm/omap: dsi: drop unused memory_read()
  drm/omap: dsi: drop unused get_te()
  drm/omap: dsi: drop unused enable_te()
  drm/omap: dsi: drop useless sync()
  drm/omap: dsi: use pixel-format and mode from attach
  drm/omap: panel-dsi-cm: use bulk regulator API
  drm/omap: dsi: lp/hs switching support for transfer()
  drm/omap: dsi: move TE GPIO handling into core
  drm/omap: dsi: drop custom enable_te() API
  drm/omap: dsi: do bus locking in host driver
  drm/omap: dsi: untangle ulps ops from enable/disable
  drm/dsi: add MIPI_DSI_MODE_ULPS_IDLE
  drm/omap: dsi: do ULPS in host driver
  drm/omap: dsi: move panel refresh function to host
  drm/omap: dsi: Reverse direction of the DSS device enable/disable
    operations
  drm/omap: dsi: drop custom panel capability support
  drm/omap: dsi: convert to drm_panel
  drm/omap: drop omapdss-boot-init
  drm/omap: dsi: implement check timings
  drm/omap: panel-dsi-cm: use DEVICE_ATTR_RO
  drm/omap: panel-dsi-cm: support unbinding
  drm/omap: panel-dsi-cm: fix remove()
  drm/omap: dsi: return proper error code from dsi_update_all()
  drm/omap: remove global dss_device variable
  drm/omap: bind components with drm_device argument
  drm/panel: Move OMAP's DSI command mode panel driver
  drm/omap: dsi: Register a drm_bridge
  drm/omap: remove legacy DSS device operations
  drm/omap: remove unused omap_connector
  drm/omap: simplify omap_display_id
  drm/omap: drop unused DSS next pointer
  drm/omap: drop empty omap_encoder helper functions
  drm/omap: drop DSS ops_flags
  drm/omap: drop dssdev display field
  drm/omap: simplify DSI manual update code
  ARM: omap2plus_defconfig: Update for moved DSI command mode panel
  drm/panel/panel-dsi-cm: support rotation property
  ARM: dts: omap4-droid4: add panel orientation

 .../bindings/display/panel/panel-dsi-cm.txt   |    4 +-
 .../boot/dts/motorola-mapphone-common.dtsi    |    6 +-
 arch/arm/boot/dts/omap3-n950.dts              |    3 +-
 arch/arm/boot/dts/omap3.dtsi                  |    3 +
 arch/arm/boot/dts/omap4-sdp.dts               |    6 +-
 arch/arm/boot/dts/omap4.dtsi                  |    6 +
 arch/arm/boot/dts/omap5.dtsi                  |    6 +
 arch/arm/configs/omap2plus_defconfig          |    2 +-
 drivers/gpu/drm/omapdrm/Kconfig               |    1 -
 drivers/gpu/drm/omapdrm/Makefile              |    2 -
 drivers/gpu/drm/omapdrm/displays/Kconfig      |   10 -
 drivers/gpu/drm/omapdrm/displays/Makefile     |    2 -
 .../gpu/drm/omapdrm/displays/panel-dsi-cm.c   | 1387 -----------------
 drivers/gpu/drm/omapdrm/dss/Kconfig           |    4 +-
 drivers/gpu/drm/omapdrm/dss/Makefile          |    2 -
 drivers/gpu/drm/omapdrm/dss/base.c            |   58 +-
 drivers/gpu/drm/omapdrm/dss/dsi.c             | 1034 +++++++-----
 drivers/gpu/drm/omapdrm/dss/dss.c             |   44 +-
 .../gpu/drm/omapdrm/dss/omapdss-boot-init.c   |  220 ---
 drivers/gpu/drm/omapdrm/dss/omapdss.h         |  141 +-
 drivers/gpu/drm/omapdrm/dss/output.c          |   13 +-
 drivers/gpu/drm/omapdrm/dss/venc.c            |    1 -
 drivers/gpu/drm/omapdrm/omap_connector.c      |  157 --
 drivers/gpu/drm/omapdrm/omap_connector.h      |   28 -
 drivers/gpu/drm/omapdrm/omap_crtc.c           |   35 +-
 drivers/gpu/drm/omapdrm/omap_drv.c            |   49 +-
 drivers/gpu/drm/omapdrm/omap_drv.h            |    1 -
 drivers/gpu/drm/omapdrm/omap_encoder.c        |   59 +-
 drivers/gpu/drm/panel/Kconfig                 |    9 +
 drivers/gpu/drm/panel/Makefile                |    1 +
 drivers/gpu/drm/panel/panel-dsi-cm.c          |  674 ++++++++
 include/drm/drm_mipi_dsi.h                    |    2 +
 32 files changed, 1465 insertions(+), 2505 deletions(-)
 delete mode 100644 drivers/gpu/drm/omapdrm/displays/Kconfig
 delete mode 100644 drivers/gpu/drm/omapdrm/displays/Makefile
 delete mode 100644 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
 delete mode 100644 drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c
 delete mode 100644 drivers/gpu/drm/omapdrm/omap_connector.c
 delete mode 100644 drivers/gpu/drm/omapdrm/omap_connector.h
 create mode 100644 drivers/gpu/drm/panel/panel-dsi-cm.c


base-commit: 54ba965bb3873eca6098ddf04e3a8d7bba1b5557
-- 
2.25.0