3 Commits

Author	SHA1	Message	Date
Warner Losh	005f7c3308	Make iclear return int, since that matches all function definitions of it.	2009-02-05 19:32:34 +00:00
Marcel Moolenaar	f1aad6d9b2	Add method enabled() to the SCC interface. This method can be used ... by driver backends to mark individual channels as enabled or not. The default implementation of this method always mark channels as enabled. This method is currently not used, but is added with the PowerQUICC in mind where the 2nd SCC channel can be disabled.	2007-03-28 18:05:17 +00:00
Marcel Moolenaar	6174e6ed12	Add scc(4), a driver for serial communications controllers. These ... controllers typically have multiple channels and support a number of serial communications protocols. The scc(4) driver is itself an umbrella driver that delegates the control over each channel and mode to a subordinate driver (like uart(4)). The scc(4) driver supports the Siemens SAB 82532 and the Zilog Z8530 and replaces puc(4) for these devices.	2006-03-30 18:33:22 +00:00