On Thursday, July 25, 2013 3:43 AM, Ian Abbott wrote: > On 2013-07-24 19:24, H Hartley Sweeten wrote: >> Embedded systems with a PC/104 bus might have a configuration that >> does not have ISA enabled. This creates a problem in Comedi where >> the PC/104 drivers cannot be enabled. >> >> Introduce a Kconfig option to allow enabling the Comedi ISA and >> PC/104 drivers if ISA is disabled. >> >> Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx> >> Cc: Ian Abbott <abbotti@xxxxxxxxx> >> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxx> >> --- >> drivers/staging/comedi/Kconfig | 13 ++++++++++++- >> 1 file changed, 12 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig >> index 01782fc..4a5dc4c 100644 >> --- a/drivers/staging/comedi/Kconfig >> +++ b/drivers/staging/comedi/Kconfig >> @@ -98,9 +98,20 @@ config COMEDI_SKEL >> >> endif # COMEDI_MISC_DRIVERS >> >> +if !ISA >> + >> +config COMEDI_ENABLE_ISA >> + bool "Enable Comedi ISA and PC/104 drivers on non-ISA systems" >> + ---help--- >> + Many of the Comedi PC/104 drivers work on embeded systems that >> + might not have the ISA option enabled. Select this option to >> + enable Comedi ISA and PC/104 drivers on these systems. >> + >> +endif # !ISA >> + >> menuconfig COMEDI_ISA_DRIVERS >> bool "Comedi ISA and PC/104 drivers" >> - depends on ISA >> + depends on ISA || COMEDI_ENABLE_ISA >> ---help--- >> Enable comedi ISA and PC/104 drivers to be built >> >> > > I know there are one or two PC/104-Plus CPU boards with 64-bit > processors that have a PC/104 ISA bus, but I don't know how well PC/104 > ISA boards work on such systems when run in 64-bit mode. Is it worth > worrying about them? I don't see any technical reasons why they would not work. The 8255 module is technically a legacy driver but it's used by a number of comedi PCI drivers. There are even a number of baseboards available that provide a passive ISA backplane for PC/104 boards. Here's a link to one: http://www.douglas.com/hardware/pcbs/pc104/bxde63104.html This one provides 2 PCI slots as well as 1 ISA slot for PC/104-Plus systems. http://www.douglas.com/hardware/pcbs/pc104/bxde104163265.html > If you just want the option to build-test the ISA drivers, there is a > COMPILE_TEST configuration option that could be checked, e.g.: > > menuconfig COMEDI_ISA_DRIVERS > bool "Comedi ISA and PC/104 drivers" > depends on ISA || COMPILE_TEST > ---help--- > Enable comedi ISA and PC/104 drivers to be built Build testing is one of my desires. But, if the drivers might be useful for PC/104-Plus CPU boards we might as well allow the option. Regards, Hartley _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
