serial: abstraction for 8250 legacy ports

Not every platform that has generic legacy 8250 ports manages to have them
clocked the right way or without errata. Provide a generic interface to
allow platforms to override the default behaviour in a manner that dumps
the complexity in *their* code not the 8250 driver.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index bf9c2bdb2e0..97f5b45bbc0 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -81,4 +81,8 @@ extern void serial8250_do_set_termios(struct uart_port *port,
 extern void serial8250_do_pm(struct uart_port *port, unsigned int state,
                              unsigned int oldstate);
 
+extern void serial8250_set_isa_configurator(void (*v)
+                                        (int port, struct uart_port *up,
+                                                unsigned short *capabilities));
+
 #endif