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path: root/drivers/tty/serial/8250/8250.h
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Diffstat (limited to 'drivers/tty/serial/8250/8250.h')
-rw-r--r--drivers/tty/serial/8250/8250.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index c9d0ebe952fc..f9719d167c8d 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -37,6 +37,10 @@ struct uart_8250_port {
unsigned char lsr_saved_flags;
#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
unsigned char msr_saved_flags;
+
+ /* 8250 specific callbacks */
+ int (*dl_read)(struct uart_8250_port *);
+ void (*dl_write)(struct uart_8250_port *, int);
};
struct old_serial_port {
@@ -98,6 +102,16 @@ static inline void serial_out(struct uart_8250_port *up, int offset, int value)
void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p);
+static inline int serial_dl_read(struct uart_8250_port *up)
+{
+ return up->dl_read(up);
+}
+
+static inline void serial_dl_write(struct uart_8250_port *up, int value)
+{
+ up->dl_write(up, value);
+}
+
#if defined(__alpha__) && !defined(CONFIG_PCI)
/*
* Digital did something really horribly wrong with the OUT1 and OUT2