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-rw-r--r--drivers/char/decserial.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/char/decserial.c b/drivers/char/decserial.c
new file mode 100644
index 00000000000..aa1440934e9
--- /dev/null
+++ b/drivers/char/decserial.c
@@ -0,0 +1,100 @@
+/*
+ * sercons.c
+ * choose the right serial device at boot time
+ *
+ * triemer 6-SEP-1998
+ * sercons.c is designed to allow the three different kinds
+ * of serial devices under the decstation world to co-exist
+ * in the same kernel. The idea here is to abstract
+ * the pieces of the drivers that are common to this file
+ * so that they do not clash at compile time and runtime.
+ *
+ * HK 16-SEP-1998 v0.002
+ * removed the PROM console as this is not a real serial
+ * device. Added support for PROM console in drivers/char/tty_io.c
+ * instead. Although it may work to enable more than one
+ * console device I strongly recommend to use only one.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <asm/dec/machtype.h>
+
+#ifdef CONFIG_ZS
+extern int zs_init(void);
+#endif
+
+#ifdef CONFIG_DZ
+extern int dz_init(void);
+#endif
+
+#ifdef CONFIG_SERIAL_CONSOLE
+
+#ifdef CONFIG_ZS
+extern void zs_serial_console_init(void);
+#endif
+
+#ifdef CONFIG_DZ
+extern void dz_serial_console_init(void);
+#endif
+
+#endif
+
+/* rs_init - starts up the serial interface -
+ handle normal case of starting up the serial interface */
+
+#ifdef CONFIG_SERIAL
+
+int __init rs_init(void)
+{
+
+#if defined(CONFIG_ZS) && defined(CONFIG_DZ)
+ if (IOASIC)
+ return zs_init();
+ else
+ return dz_init();
+#else
+
+#ifdef CONFIG_ZS
+ return zs_init();
+#endif
+
+#ifdef CONFIG_DZ
+ return dz_init();
+#endif
+
+#endif
+}
+
+__initcall(rs_init);
+
+#endif
+
+#ifdef CONFIG_SERIAL_CONSOLE
+
+/* serial_console_init handles the special case of starting
+ * up the console on the serial port
+ */
+static int __init decserial_console_init(void)
+{
+#if defined(CONFIG_ZS) && defined(CONFIG_DZ)
+ if (IOASIC)
+ zs_serial_console_init();
+ else
+ dz_serial_console_init();
+#else
+
+#ifdef CONFIG_ZS
+ zs_serial_console_init();
+#endif
+
+#ifdef CONFIG_DZ
+ dz_serial_console_init();
+#endif
+
+#endif
+ return 0;
+}
+console_initcall(decserial_console_init);
+
+#endif