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Diffstat (limited to 'include/linux/serial_8250.h')
-rw-r--r--include/linux/serial_8250.h20
1 files changed, 17 insertions, 3 deletions
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index a8efa235b7c1..78097e7a330a 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -60,6 +60,20 @@ enum {
};
struct uart_8250_dma;
+struct uart_8250_port;
+
+/**
+ * 8250 core driver operations
+ *
+ * @setup_irq() Setup irq handling. The universal 8250 driver links this
+ * port to the irq chain. Other drivers may @request_irq().
+ * @release_irq() Undo irq handling. The universal 8250 driver unlinks
+ * the port from the irq chain.
+ */
+struct uart_8250_ops {
+ int (*setup_irq)(struct uart_8250_port *);
+ void (*release_irq)(struct uart_8250_port *);
+};
/*
* This should be used by drivers which want to register
@@ -88,6 +102,8 @@ struct uart_8250_port {
unsigned char canary; /* non-zero during system sleep
* if no_console_suspend
*/
+ unsigned char probe;
+#define UART_PROBE_RSA (1 << 0)
/*
* Some bits in registers are cleared on a read, so they must
@@ -100,6 +116,7 @@ struct uart_8250_port {
unsigned char msr_saved_flags;
struct uart_8250_dma *dma;
+ const struct uart_8250_ops *ops;
/* 8250 specific callbacks */
int (*dl_read)(struct uart_8250_port *);
@@ -118,11 +135,8 @@ void serial8250_resume_port(int line);
extern int early_serial_setup(struct uart_port *port);
-extern int serial8250_find_port(struct uart_port *p);
-extern int serial8250_find_port_for_earlycon(void);
extern unsigned int serial8250_early_in(struct uart_port *port, int offset);
extern void serial8250_early_out(struct uart_port *port, int offset, int value);
-extern int setup_early_serial8250_console(char *cmdline);
extern void serial8250_do_set_termios(struct uart_port *port,
struct ktermios *termios, struct ktermios *old);
extern int serial8250_do_startup(struct uart_port *port);