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path: root/drivers/hid/hid-multitouch.c
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Diffstat (limited to 'drivers/hid/hid-multitouch.c')
-rw-r--r--drivers/hid/hid-multitouch.c24
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 3d664d01305e..296d4991560e 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -272,7 +272,7 @@ static ssize_t mt_show_quirks(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct hid_device *hdev = container_of(dev, struct hid_device, dev);
+ struct hid_device *hdev = to_hid_device(dev);
struct mt_device *td = hid_get_drvdata(hdev);
return sprintf(buf, "%u\n", td->mtclass.quirks);
@@ -282,7 +282,7 @@ static ssize_t mt_set_quirks(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct hid_device *hdev = container_of(dev, struct hid_device, dev);
+ struct hid_device *hdev = to_hid_device(dev);
struct mt_device *td = hid_get_drvdata(hdev);
unsigned long val;
@@ -357,8 +357,19 @@ static void mt_feature_mapping(struct hid_device *hdev,
break;
}
- td->inputmode = field->report->id;
- td->inputmode_index = usage->usage_index;
+ if (td->inputmode < 0) {
+ td->inputmode = field->report->id;
+ td->inputmode_index = usage->usage_index;
+ } else {
+ /*
+ * Some elan panels wrongly declare 2 input mode
+ * features, and silently ignore when we set the
+ * value in the second field. Skip the second feature
+ * and hope for the best.
+ */
+ dev_info(&hdev->dev,
+ "Ignoring the extra HID_DG_INPUTMODE\n");
+ }
break;
case HID_DG_CONTACTMAX:
@@ -486,6 +497,11 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
mt_store_field(usage, td, hi);
return 1;
case HID_DG_CONFIDENCE:
+ if (cls->name == MT_CLS_WIN_8 &&
+ field->application == HID_DG_TOUCHPAD) {
+ cls->quirks &= ~MT_QUIRK_ALWAYS_VALID;
+ cls->quirks |= MT_QUIRK_VALID_IS_CONFIDENCE;
+ }
mt_store_field(usage, td, hi);
return 1;
case HID_DG_TIPSWITCH: