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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2015-03-03 12:44:05 -0500
committerJiri Kosina <jkosina@suse.cz>2015-03-03 21:31:56 +0100
commitfce8c5fd82e8c3d39a919f649d8ddd97310f4b63 (patch)
treedda1d807b5c68bb9c329e8c2643db9a77af075d6 /drivers/hid
parentaa2121ac477845eb64d46278e93765b82a005c90 (diff)
HID: uclogic: actually invert the in-range bit for huion tablets only
This hack is only needed for Huion tablets. It does not seem to have any effect on the other tablets handled by this device right now, but it's better to check for the product id sooner than discovering that we have messed up one tablet later. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Nikolai Kondrashov <spbnick@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-uclogic.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/hid/hid-uclogic.c b/drivers/hid/hid-uclogic.c
index f44e72bc1a0a..bdda9fd05c1f 100644
--- a/drivers/hid/hid-uclogic.c
+++ b/drivers/hid/hid-uclogic.c
@@ -564,6 +564,7 @@ enum uclogic_ph_id {
/* Report descriptor template placeholder */
#define UCLOGIC_PH(_ID) UCLOGIC_PH_HEAD, UCLOGIC_PH_ID_##_ID
+#define UCLOGIC_PEN_REPORT_ID 0x07
/* Fixed report descriptor template */
static const __u8 uclogic_tablet_rdesc_template[] = {
@@ -625,6 +626,7 @@ enum uclogic_prm {
struct uclogic_drvdata {
__u8 *rdesc;
unsigned int rsize;
+ bool invert_pen_inrange;
};
static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc,
@@ -905,6 +907,7 @@ static int uclogic_probe(struct hid_device *hdev,
hid_err(hdev, "tablet enabling failed\n");
return rc;
}
+ drvdata->invert_pen_inrange = true;
}
break;
}
@@ -927,12 +930,12 @@ static int uclogic_probe(struct hid_device *hdev,
static int uclogic_raw_event(struct hid_device *hdev, struct hid_report *report,
u8 *data, int size)
{
- struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+ struct uclogic_drvdata *drvdata = hid_get_drvdata(hdev);
- /* If this is a pen input report */
- if (intf->cur_altsetting->desc.bInterfaceNumber == 0 &&
- report->type == HID_INPUT_REPORT &&
- report->id == 0x07 && size >= 2)
+ if ((drvdata->invert_pen_inrange) &&
+ (report->type == HID_INPUT_REPORT) &&
+ (report->id == UCLOGIC_PEN_REPORT_ID) &&
+ (size >= 2))
/* Invert the in-range bit */
data[1] ^= 0x40;