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authorBenjamin Tissoires <benjamin.tissoires@enac.fr>2011-11-23 10:54:29 +0100
committerJiri Kosina <jkosina@suse.cz>2011-11-23 14:50:38 +0100
commit2261bb9ff0dc38e1d5f35af08f75ec3b37ba6335 (patch)
tree2b3e5bc378bb16dbe66c28b32ed92f071f63fa7d /drivers/hid
parenteec29e3dab483a5d9a742a6fa68db1ec1f0f7504 (diff)
HID: multitouch: cleanup eGalax quirks
The previous implementation of eGalax protocol was not satisfying as we had to manually set x/y ranges as they were corrupted after reading the report descriptor. Indeed, the report descriptor provided a stylus input interface which override the correct values. This patch omits this input, thus leaving the correct value untouched, and the MT_QUIRK_EGALAX_XYZ_FIXUP not required anymore. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-multitouch.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index a51e62efbac..94756d28af5 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -50,7 +50,6 @@ MODULE_LICENSE("GPL");
#define MT_QUIRK_ALWAYS_VALID (1 << 4)
#define MT_QUIRK_VALID_IS_INRANGE (1 << 5)
#define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6)
-#define MT_QUIRK_EGALAX_XYZ_FIXUP (1 << 7)
#define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8)
struct mt_slot {
@@ -171,8 +170,7 @@ struct mt_class mt_classes[] = {
.maxcontacts = 10 },
{ .name = MT_CLS_EGALAX,
.quirks = MT_QUIRK_SLOT_IS_CONTACTID |
- MT_QUIRK_VALID_IS_INRANGE |
- MT_QUIRK_EGALAX_XYZ_FIXUP,
+ MT_QUIRK_VALID_IS_INRANGE,
.maxcontacts = 2,
.sn_move = 4096,
.sn_pressure = 32,
@@ -253,7 +251,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
{
struct mt_device *td = hid_get_drvdata(hdev);
struct mt_class *cls = &td->mtclass;
- __s32 quirks = cls->quirks;
/* Only map fields from TouchScreen or TouchPad collections.
* We need to ignore fields that belong to other collections
@@ -265,13 +262,17 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
else
return 0;
+ /* eGalax devices provide a Digitizer.Stylus input which overrides
+ * the correct Digitizers.Finger X/Y ranges.
+ * Let's just ignore this input. */
+ if (field->physical == HID_DG_STYLUS)
+ return -1;
+
switch (usage->hid & HID_USAGE_PAGE) {
case HID_UP_GENDESK:
switch (usage->hid) {
case HID_GD_X:
- if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
- field->logical_maximum = 32760;
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_X);
set_abs(hi->input, ABS_MT_POSITION_X, field,
@@ -284,8 +285,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
}
return 1;
case HID_GD_Y:
- if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
- field->logical_maximum = 32760;
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_POSITION_Y);
set_abs(hi->input, ABS_MT_POSITION_Y, field,
@@ -353,8 +352,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
}
return 1;
case HID_DG_TIPPRESSURE:
- if (quirks & MT_QUIRK_EGALAX_XYZ_FIXUP)
- field->logical_minimum = 0;
hid_map_usage(hi, usage, bit, max,
EV_ABS, ABS_MT_PRESSURE);
set_abs(hi->input, ABS_MT_PRESSURE, field,