[v2,0/3] drm/panel: st7701: Add Anbernic RG28XX panel support

Message

Hironori KIKUCHI June 28, 2024, 5:10 a.m. UTC

Add support for the display panel of the Anbernic RG28XX, a handheld
gaming device from Anbernic.

This panel is driven by a variant of the ST7701 driver IC internally,
and is connected via an RGB parallel interface for image transmission and
an SPI interface for configuration.

Since the current panel driver for the ST7701 variants only supports MIPI
DSI as the configuration interface, add support for SPI as well.

v2:
  - Update dt-bindings
  - Rename DSI_CMD* macros to ST7701_CMD*
  - Rename ST7701_DSI macro to ST7701_WRITE
  - Fix incorrect dev_err_probe() usage
  - Remove GPIOD_FLAGS_BIT_NONEXCLUSIVE flag
  - Remove st7701_remove() and st7701_spi_remove()
  - Call drm_panel_disable() and drm_panel_unprepare() on cleanup

Hironori KIKUCHI (3):
  dt-bindings: display: st7701: Add Anbernic RG28XX panel
  drm/panel: st7701: Add support for SPI for configuration
  drm/panel: st7701: Add Anbernic RG28XX panel support

 .../display/panel/sitronix,st7701.yaml        |   69 +-
 drivers/gpu/drm/panel/Kconfig                 |    2 +
 drivers/gpu/drm/panel/panel-sitronix-st7701.c | 1074 ++++++++++-------
 3 files changed, 732 insertions(+), 413 deletions(-)