The patch titled
ldisc: new dcd_change() method for line disciplines
has been added to the -mm tree. Its filename is
ldisc-new-dcd_change-method-for-line-disciplines.patch
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------------------------------------------------------
Subject: ldisc: new dcd_change() method for line disciplines
From: Rodolfo Giometti <giometti@xxxxxxxx>
Signed-off-by: Rodolfo Giometti <giometti@xxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Cc: Kay Sievers <kay.sievers@xxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Michael Kerrisk <mtk.manpages@xxxxxxxxxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/serial/tty.txt | 4 ++++
include/linux/tty_ldisc.h | 8 ++++++++
2 files changed, 12 insertions(+)
diff -puN Documentation/serial/tty.txt~ldisc-new-dcd_change-method-for-line-disciplines Documentation/serial/tty.txt
--- a/Documentation/serial/tty.txt~ldisc-new-dcd_change-method-for-line-disciplines
+++ a/Documentation/serial/tty.txt
@@ -100,6 +100,10 @@ write_wakeup() - May be called at any po
is permitted to call the driver write method from
this function. In such a situation defer it.
+dcd_change() - Report to the tty line the current DCD pin status
+ changes and the relative timestamp. The timestamp
+ can be NULL.
+
Driver Access
diff -puN include/linux/tty_ldisc.h~ldisc-new-dcd_change-method-for-line-disciplines include/linux/tty_ldisc.h
--- a/include/linux/tty_ldisc.h~ldisc-new-dcd_change-method-for-line-disciplines
+++ a/include/linux/tty_ldisc.h
@@ -99,6 +99,12 @@
* cease I/O to the tty driver. Can sleep. The driver should
* seek to perform this action quickly but should wait until
* any pending driver I/O is completed.
+ *
+ * void (*dcd_change)(struct tty_struct *tty, unsigned int status,
+ * struct timespec *ts)
+ *
+ * Tells the discipline that the DCD pin has changed its status and
+ * the relative timestamp. Pointer ts can be NULL.
*/
#include <linux/fs.h>
@@ -136,6 +142,8 @@ struct tty_ldisc_ops {
void (*receive_buf)(struct tty_struct *, const unsigned char *cp,
char *fp, int count);
void (*write_wakeup)(struct tty_struct *);
+ void (*dcd_change)(struct tty_struct *, unsigned int,
+ struct timespec *);
struct module *owner;
_
Patches currently in -mm which might be from giometti@xxxxxxxx are
linux-next.patch
linuxpps-core-support.patch
pps-userland-header-file-for-pps-api.patch
pps-documentation-programs-and-examples.patch
pps-linuxpps-clients-support.patch
ldisc-new-dcd_change-method-for-line-disciplines.patch
ldisc-n_tty-export-all-n_tty-ldisc-methods.patch
pps-serial-clients-support.patch
pps-parallel-port-clients-support.patch
pps-low-level-irq-timestamps-recording.patch
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