On Thu, Dec 23, 2021 at 05:03:56PM +0100, Michael Tretter wrote: > Hello, > > The Solomon single-chip CMOS OLED/PLED driver with controller can be connected > to I2C or SPI. The driver already supports I2C. This series adds support for > SPI connected displays to the driver. > > The bindings for the SPI connected display are still not documented. The > driver uses the (undocumented) solomon,ssd1306 compatible of the staging > driver in Linux, but uses properties defined for the solomon,ssd1306fb-i2c > compatible of the I2C driver. I moved the warning about the compatible from > the commit message into the driver to have it in the same place as the use of > the compatible and to allow to eventually remove it. > > The driver still allows to use SPI and I2C with its own hand-rolled > abstraction, because the controller does not actually expose registers, but > simply accepts commands or data. I followed Ahmad's suggestions how to remove > the ugly #ifdefs and the driver looks a lot nicer now. > > Patches 1-3 adjust the SPI and I2C frameworks to make them nicer to use for > drivers that support devices that may be connected via SPI or I2C. > > Patches 4-7 refactor the driver to have fewer locations that refer to I2C to > simplify disabling the I2C support. > > Patch 8 actually adds the SPI support and makes I2C optional. > > Michael > > --- > > Changelog: > > v2: > > - add new Patches 1-3 for the SPI and I2C frameworks > - use new SPI and I2C helpers to get rid of use of config macros > - move warning about undocumented compatible into driver > > Michael Tretter (8): > spi: stub device_spi_driver if SPI is disabled > spi: add to_spi_device helper > i2c: stub device_i2c_driver if I2C is disabled > video: ssd1307fb: pass par instead of i2c client to write > video: ssd1307fb: don't use i2c client for logging > video: ssd1307fb: move i2c setup to single place > video: ssd1307fb: use function pointer for write > video: ssd1307fb: add spi support Applied, thanks Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
