On Sat, Mar 19, 2005 at 09:43:41AM +0100, Devon H. O'Dell wrote: > On Sat, Mar 19, 2005 at 09:02:15AM +0100, Devon H. O'Dell wrote: > > On Fri, Mar 18, 2005 at 03:55:53PM -0700, Warner Losh wrote: > > > > I'm busy writing a Ziatech 5503 watchdog driver for FreeBSD (and > > > > porting all the watchdog stuff to DragonFly BSD) and Plan 9. For my > > > > driver, I have no way to identify that the system has the driver, so > > > > I wanted to make it conditional on > > > > Rather, I have no way to identify that the system has the device :). > > AHA! But I have finally found something that will make my life a > little easier, I think. I just noticed a read only register with a > default value of 0x80 and tested it. It returns 0x80. Is this enough > to test on / probe for? > > --Devon
Sorry, hate replying to myself. Turns out the value here is variable. Assuming I cannot find anything to identify the system, can I simply attach the driver if it is enabled in the configuration file? --Devon
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