[0/5] drm/mgag200: Handle BMC in dedicated VGA output

Message

Thomas Zimmermann Aug. 5, 2024, 1:05 p.m. UTC

Add a separate output for VGA connectors with BMC support. Convert
code for server models. Keep the original VGA for regular G200 models.

The VGA-BMC output either reports the connected VGA display or, if 
that is not available, the BMC. Makes the BMC connector obsolete, so 
remove it.

The benefit of the VGA-BMC connector is that is works with any
userspace. Most userspace compositors have problems configuring the
current BMC connector. The BMC connector is now gone and only a
VGA connector is present.
 
A different approach to removing the BMC connector has been tried in
[1]. The new series also picks up an idea from an older series, [2]
where BMC support is entirely transparent to the CRTC.
 
[1] https://patchwork.freedesktop.org/series/136084/
[2] https://patchwork.freedesktop.org/series/135931/

Thomas Zimmermann (5):
  drm/mgag200: Add VGA-BMC output
  drm/mgag200: vga-bmc: Transparently handle BMC
  drm/mgag200: vga-bmc: Control CRTC VIDRST flag from encoder
  drm/mgag200: vga-bmc: Control BMC scanout from encoder
  drm/mgag200: Remove BMC output

 drivers/gpu/drm/mgag200/Makefile          |   1 +
 drivers/gpu/drm/mgag200/mgag200_bmc.c     | 102 --------------
 drivers/gpu/drm/mgag200/mgag200_drv.h     |  13 +-
 drivers/gpu/drm/mgag200/mgag200_g200eh.c  |   6 +-
 drivers/gpu/drm/mgag200/mgag200_g200eh3.c |   6 +-
 drivers/gpu/drm/mgag200/mgag200_g200er.c  |   9 +-
 drivers/gpu/drm/mgag200/mgag200_g200ev.c  |   9 +-
 drivers/gpu/drm/mgag200/mgag200_g200ew3.c |   6 +-
 drivers/gpu/drm/mgag200/mgag200_g200se.c  |   9 +-
 drivers/gpu/drm/mgag200/mgag200_g200wb.c  |   6 +-
 drivers/gpu/drm/mgag200/mgag200_mode.c    |   9 --
 drivers/gpu/drm/mgag200/mgag200_vga_bmc.c | 156 ++++++++++++++++++++++
 12 files changed, 167 insertions(+), 165 deletions(-)
 create mode 100644 drivers/gpu/drm/mgag200/mgag200_vga_bmc.c