Hello, This series adds a ssd130x-spi driver that provides a 4-wire SPI transport support for SSD130x OLED controllers that can be accessed through a SPI.
The driver is quite similar to existing ssd130x-i2c driver that is used by I2C controllers, but there is a difference in the protocol used by SSD130x depending on the transport used. The details are in patch #4 description. Patch #1 just makes the current ssd130x-i2c compatible strings in the DT binding to be deprecated, and add new ones that don't have an -fb suffix. Patch #2 extends the DT binding with the compatible string and properties needed to support the ssd130x-spi devices. Patch #3 adds the new compatible strings to the OF device ID table in the ssd130x-i2c DRM driver. Patch #4 moves the device info for the different SSD130x variants from the ssd130x-i2c transport driver to the ssd130x core driver. Finally patch #5 adds the ssd130x-spi DRM driver for the OLED controllers that come with a 4-wire SPI interface, instead of an I2C interface. Best regards, Javier Javier Martinez Canillas (5): dt-bindings: display: ssd1307fb: Deprecate fbdev compatible strings dt-bindings: display: ssd1307fb: Extend schema for SPI controllers drm/solomon: Add ssd130x-i2c compatible strings without an -fb suffix drm/solomon: Move device info from ssd130x-i2c to the core driver drm/solomon: Add SSD130x OLED displays SPI support .../bindings/display/solomon,ssd1307fb.yaml | 117 ++++++++--- drivers/gpu/drm/solomon/Kconfig | 9 + drivers/gpu/drm/solomon/Makefile | 1 + drivers/gpu/drm/solomon/ssd130x-i2c.c | 60 +++--- drivers/gpu/drm/solomon/ssd130x-spi.c | 184 ++++++++++++++++++ drivers/gpu/drm/solomon/ssd130x.c | 60 +++++- drivers/gpu/drm/solomon/ssd130x.h | 13 ++ 7 files changed, 376 insertions(+), 68 deletions(-) create mode 100644 drivers/gpu/drm/solomon/ssd130x-spi.c -- 2.35.1
