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xen pvfb: Pointer z-axis (mouse wheel) support 

Add z-axis motion to pointer events.  Backward compatible, because
there's space for the z-axis in union xenkbd_in_event, and old
backends zero it.

Derived from
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/57dfe0098000
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/1edfea26a2a9
http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/c3ff0b26f664

Signed-off-by: Pat Campbell <plc@novell.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Markus Armbruster 2008-05-26 23:31:08 +01:00 committed by Thomas Gleixner
parent 9e124fe16f
commit 6ba0e7b36c
2 changed files with 9 additions and 1 deletions
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8
drivers/input/xen-kbdfront.c
View File

@ -66,6 +66,9 @@ static irqreturn_t input_handler(int rq, void *dev_id)
case XENKBD_TYPE_MOTION:
input_report_rel(dev, REL_X, event->motion.rel_x);
input_report_rel(dev, REL_Y, event->motion.rel_y);
if (event->motion.rel_z)
input_report_rel(dev, REL_WHEEL,
-event->motion.rel_z);
break;
case XENKBD_TYPE_KEY:
dev = NULL;
@ -84,6 +87,9 @@ static irqreturn_t input_handler(int rq, void *dev_id)
case XENKBD_TYPE_POS:
input_report_abs(dev, ABS_X, event->pos.abs_x);
input_report_abs(dev, ABS_Y, event->pos.abs_y);
if (event->pos.rel_z)
input_report_rel(dev, REL_WHEEL,
-event->pos.rel_z);
break;
}
if (dev)
@ -152,7 +158,7 @@ static int __devinit xenkbd_probe(struct xenbus_device *dev,
ptr->evbit[0] = BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_ABS);
for (i = BTN_LEFT; i <= BTN_TASK; i++)
set_bit(i, ptr->keybit);
ptr->relbit[0] = BIT(REL_X) | BIT(REL_Y);
ptr->relbit[0] = BIT(REL_X) | BIT(REL_Y) | BIT(REL_WHEEL);
input_set_abs_params(ptr, ABS_X, 0, XENFB_WIDTH, 0, 0);
input_set_abs_params(ptr, ABS_Y, 0, XENFB_HEIGHT, 0, 0);

2
include/xen/interface/io/kbdif.h
View File

@ -49,6 +49,7 @@ struct xenkbd_motion {
uint8_t type; /* XENKBD_TYPE_MOTION */
int32_t rel_x; /* relative X motion */
int32_t rel_y; /* relative Y motion */
int32_t rel_z; /* relative Z motion (wheel) */
};
struct xenkbd_key {
@ -61,6 +62,7 @@ struct xenkbd_position {
uint8_t type; /* XENKBD_TYPE_POS */
int32_t abs_x; /* absolute X position (in FB pixels) */
int32_t abs_y; /* absolute Y position (in FB pixels) */
int32_t rel_z; /* relative Z motion (wheel) */
};
#define XENKBD_IN_EVENT_SIZE 40