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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2014-09-10 23:29:56 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-09-26 20:01:56 +0400
commit234abab143aef82c0ef1f2de409c0db96b666f3c (patch)
tree45580c4dd61a49fb028a1b5ecf3fa637efe34ee7 /include/linux/serial_core.h
parentcc952e7017fa2e8871ee6a94f2c606ff5911f61e (diff)
downloadlinux-234abab143aef82c0ef1f2de409c0db96b666f3c.tar.xz
tty: serial: 8250_core: allow to set ->throttle / ->unthrottle callbacks
The OMAP UART provides support for HW assisted flow control. What is missing is the support to throttle / unthrottle callbacks which are used by the omap-serial driver at the moment. This patch adds the callbacks. It should be safe to add them since they are only invoked from the serial_core (uart_throttle()) if the feature flags are set. Reviewed-by: Tony Lindgren <tony@atomide.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_core.h')
-rw-r--r--include/linux/serial_core.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 204c452a7567..21c2e05c1bc3 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -125,6 +125,8 @@ struct uart_port {
struct ktermios *old);
int (*startup)(struct uart_port *port);
void (*shutdown)(struct uart_port *port);
+ void (*throttle)(struct uart_port *port);
+ void (*unthrottle)(struct uart_port *port);
int (*handle_irq)(struct uart_port *);
void (*pm)(struct uart_port *, unsigned int state,
unsigned int old);