Hello Joel, ----- Joel Sherrill <joel.sherr...@gmail.com> schrieb: > Sebastian, > > This is yet another style of serial port driver in recent history and > the software tax hasn't been paid on the last round of changes.
this is not a new style of serial port drivers. It uses the new Termios device driver model which I changed in the last patch set to use IMFS generic nodes. This particular serial device (NXP SC16IS752) is attached via an I2C or SPI bus. So, this is highly board/application specific. Adding such a device to a particular BSP would end up in a configuration nightmare. > Merging this will result in three different styles of serial port drivers > by my count. > > I am not opposed to improvement but this is rapidly heading > down the "old vs new PowerPC interrupt" path and that sucked > for years. With the recent change for the new Termios device driver model its easier to move the existing console drivers, since there is no need to maintain major/minor numbers anymore. The drawback is that you have to use IMFS as the base file system. However, its just a matter of doing it to strip down the IMFS to have similar size demands than the current devfs. > > --joel > > > On Mon, Sep 19, 2016 at 8:57 AM, Gedare Bloom <ged...@rtems.org> wrote: > > > It will be good to have some documentation (BSP/driver manual) about > > how to write these kind of termios drivers. Usually without it we will > > see someone just copy-paste this one and modify until they get it > > right... So lacking a plain english doc, this "first" implementation > > should provide enough comments to make it easy to copy-paste-modify. > > > > On Mon, Sep 19, 2016 at 4:11 AM, Sebastian Huber > > <sebastian.hu...@embedded-brains.de> wrote: > > > Please note that this is the first Termios device driver that is > > independent > > > of a BSP, CPU architecture and console driver. It is currently work in > > > progress and lacks support for interrupts. We will add this probably in > > one > > > or two weeks. > > > > > > -- > > > Sebastian Huber, embedded brains GmbH > > > > > > Address : Dornierstr. 4, D-82178 Puchheim, Germany > > > Phone : +49 89 189 47 41-16 > > > Fax : +49 89 189 47 41-09 > > > E-Mail : sebastian.hu...@embedded-brains.de > > > PGP : Public key available on request. > > > > > > Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. > > > > > > > > > _______________________________________________ > > > devel mailing list > > > devel@rtems.org > > > http://lists.rtems.org/mailman/listinfo/devel > > _______________________________________________ > > devel mailing list > > devel@rtems.org > > http://lists.rtems.org/mailman/listinfo/devel > > -- Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.huber at embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
