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Input: serio - support multiple child devices per single parent

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Some (rare) serio devices need to have multiple serio children. One of
the examples is PS/2 multiplexer present on several TQC STKxxx boards,
which connect PS/2 keyboard and mouse to single tty port.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Eremin-Solenikov
2010-10-04 21:46:10 -07:00
committed by Dmitry Torokhov
parent a8b3c0f57b
commit 0982258264
3 changed files with 86 additions and 46 deletions
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4
include/linux/serio.h
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@@ -41,7 +41,9 @@ struct serio {
int (*start)(struct serio *);
void (*stop)(struct serio *);
struct serio *parent, *child;
struct serio *parent;
struct list_head child_node; /* Entry in parent->children list */
struct list_head children;
unsigned int depth; /* level of nesting in serio hierarchy */
struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */