serial: 8250: introduce get_divisor() and set_divisor() hook

Add these two hooks so that they can be overridden with driver specific
implementations.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 06ea4eeb09ab..406edae44ca3 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -127,6 +127,13 @@ struct uart_port {
                                              struct ktermios *);
         unsigned int            (*get_mctrl)(struct uart_port *);
         void                    (*set_mctrl)(struct uart_port *, unsigned int);
+        unsigned int            (*get_divisor)(struct uart_port *,
+                                               unsigned int baud,
+                                               unsigned int *frac);
+        void                    (*set_divisor)(struct uart_port *,
+                                               unsigned int baud,
+                                               unsigned int quot,
+                                               unsigned int quot_frac);
         int                     (*startup)(struct uart_port *port);
         void                    (*shutdown)(struct uart_port *port);
         void                    (*throttle)(struct uart_port *port);