Thanks.. No hurry, I need to implement the new SPI api for the Pi anyway, Alan
> On Sep 19, 2016, at 2:56 PM, Sebastian Huber > <sebastian.hu...@embedded-brains.de> wrote: > > Sorry, this is a bug in the driver. We will fix this before we commit it. > > ----- Am 19. Sep 2016 um 20:53 schrieb Alan Cudmore alan.cudm...@gmail.com: > >> I applied this patch and tried building the raspberrypi BSP and got this >> error: >> ../../../../../../../rtems-src/rtems/c/src/../../cpukit/dev/serial/nxp-sc16is752.c:17:27: >> fatal error: bsp/atsam-spi.h: No such file or directory >> #include <bsp/atsam-spi.h> >> >> Will this only build for the atsam BSP? >> >> I am interested in this driver. The Raspberry Pi only has one usable UART. I >> have a SC16IS750 device I would like to use to add a couple of UARTs to my >> board so I could connect a GPS and keep the original UART free. >> >> To use this, we will have to supply the new Linux user API SPI driver for the >> Raspberry Pi similar to the spi driver in the atsam BSP, correct? >> >> Thanks, >> Alan >> >> >>> On Sep 19, 2016, at 12:13 PM, Sebastian Huber >>> <sebastian.hu...@embedded-brains.de> wrote: >>> >>> 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 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
