[PATCH 2 of 5] xen pvfb: Pointer z-axis (mouse wheel) support
From: Jeremy Fitzhardinge
Date: Fri May 23 2008 - 09:09:58 EST
From: Markus Armbruster <armbru@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Markus Armbruster <armbru@xxxxxxxxxx>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
---
drivers/input/xen-kbdfront.c | 8 +++++++-
include/xen/interface/io/kbdif.h | 3 ++-
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/input/xen-kbdfront.c b/drivers/input/xen-kbdfront.c
--- a/drivers/input/xen-kbdfront.c
+++ b/drivers/input/xen-kbdfront.c
@@ -66,6 +66,9 @@
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 @@
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 @@
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);
diff --git a/include/xen/interface/io/kbdif.h b/include/xen/interface/io/kbdif.h
--- a/include/xen/interface/io/kbdif.h
+++ b/include/xen/interface/io/kbdif.h
@@ -49,6 +49,7 @@
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 @@
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
--
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