On 04/11/2017 11:50 AM, Juergen Gross wrote:
Add a parameter for setting the resolution of xen-kbdfront in order to
be able to cope with a (virtual) frame buffer of arbitrary resolution.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
drivers/input/misc/xen-kbdfront.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/input/misc/xen-kbdfront.c b/drivers/input/misc/xen-kbdfront.c
index 3900875dec10..90e7981a7768 100644
--- a/drivers/input/misc/xen-kbdfront.c
+++ b/drivers/input/misc/xen-kbdfront.c
@@ -41,6 +41,12 @@ struct xenkbd_info {
char phys[32];
};
+enum { KPARAM_WIDTH, KPARAM_HEIGHT, KPARAM_CNT };
+static int size[KPARAM_CNT] = { XENFB_WIDTH, XENFB_HEIGHT };
if you are about to release yet another version of the series,
could you please also rename "size" to "ptr_size/pointer_size/XXX",
so later when I add multi-touch support I can have
"mtouch_size" module parameter and they are consistent all together?
+module_param_array(size, int, NULL, 0444);
+MODULE_PARM_DESC(size,
+ "Pointing device width, height in pixels (default 800,600)");
+
static int xenkbd_remove(struct xenbus_device *);
static int xenkbd_connect_backend(struct xenbus_device *, struct xenkbd_info *);
static void xenkbd_disconnect_backend(struct xenkbd_info *);
@@ -174,8 +180,8 @@ static int xenkbd_probe(struct xenbus_device *dev,
if (abs) {
__set_bit(EV_ABS, ptr->evbit);
- input_set_abs_params(ptr, ABS_X, 0, XENFB_WIDTH, 0, 0);
- input_set_abs_params(ptr, ABS_Y, 0, XENFB_HEIGHT, 0, 0);
+ input_set_abs_params(ptr, ABS_X, 0, size[KPARAM_WIDTH], 0, 0);
+ input_set_abs_params(ptr, ABS_Y, 0, size[KPARAM_HEIGHT], 0, 0);
} else {
input_set_capability(ptr, EV_REL, REL_X);
input_set_capability(ptr, EV_REL, REL_Y);
@@ -344,12 +350,16 @@ static void xenkbd_backend_changed(struct xenbus_device *dev,
/* Set input abs params to match backend screen res */
if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
- "width", "%d", &val) > 0)
+ "width", "%d", &val) > 0) {
input_set_abs_params(info->ptr, ABS_X, 0, val, 0, 0);
+ size[KPARAM_WIDTH] = val;
+ }
if (xenbus_scanf(XBT_NIL, info->xbdev->otherend,
- "height", "%d", &val) > 0)
+ "height", "%d", &val) > 0) {
input_set_abs_params(info->ptr, ABS_Y, 0, val, 0, 0);
+ size[KPARAM_HEIGHT] = val;
+ }
break;
Thank you,
Oleksandr
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