[PATCH 0/2] drm/mipi-dbi: Allow using same the D/C GPIO for multiple displays

[Otto Pflüger]

When multiple displays are connected to the same SPI bus, the data/command
switch is sometimes considered part of the bus and is shared among the
displays.

This series adds the GPIO_FLAGS_BIT_NONEXCLUSIVE flag for this GPIO and
SPI bus locking to the panel-mipi-dbi/drm_mipi_dbi drivers to support this
hardware setup.

Otto Pflüger (2):
  drm/mipi-dbi: Lock SPI bus before setting D/C GPIO
  drm/tiny: panel-mipi-dbi: Allow sharing the D/C GPIO

 drivers/gpu/drm/drm_mipi_dbi.c        | 22 +++++++++++++++++-----
 drivers/gpu/drm/tiny/panel-mipi-dbi.c |  3 ++-
 include/drm/drm_mipi_dbi.h            |  2 +-
 3 files changed, 20 insertions(+), 7 deletions(-)

-- 
2.39.1