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Subject[RFC v2 06/10] hid-multitouch: added support for Cypress TrueTouch panels
Date
Added support for Cypress TrueTouch panels, which detect up to 10 fingers

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Signed-off-by: Stéphane Chatty <chatty@enac.fr>
---
drivers/hid/hid-core.c | 1 +
drivers/hid/hid-ids.h | 1 +
drivers/hid/hid-multitouch.c | 15 +++++++++++++++
3 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 9f1ab80..1dcb4b0 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1299,6 +1299,7 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 70dd0fd..d8b0b3f 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -181,6 +181,7 @@
#define USB_DEVICE_ID_CYPRESS_BARCODE_1 0xde61
#define USB_DEVICE_ID_CYPRESS_BARCODE_2 0xde64
#define USB_DEVICE_ID_CYPRESS_BARCODE_3 0xbca1
+#define USB_DEVICE_ID_CYPRESS_TRUETOUCH 0xc001

#define USB_VENDOR_ID_DEALEXTREAME 0x10c5
#define USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701 0x819a
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 9edbf5d..f9d537e 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -65,6 +65,7 @@ struct mt_class {
#define MT_CLS_DEFAULT 0
#define MT_CLS_DUAL1 1
#define MT_CLS_DUAL2 2
+#define MT_CLS_CYPRESS 3

/*
* these device-dependent functions determine what slot corresponds
@@ -81,6 +82,14 @@ static int slot_is_contactnumber(struct mt_device *td)
return td->num_received;
}

+static int cypress_compute_slot(struct mt_device *td)
+{
+ if (td->curdata.contactid != 0 || td->num_received == 0)
+ return td->curdata.contactid;
+ else
+ return -1;
+}
+
static int find_slot_from_contactid(struct mt_device *td)
{
int i;
@@ -100,6 +109,7 @@ struct mt_class mt_classes[] = {
{ find_slot_from_contactid, 10 }, /* MT_CLS_DEFAULT */
{ slot_is_contactid, 2 }, /* MT_CLS_DUAL1 */
{ slot_is_contactnumber, 2 }, /* MT_CLS_DUAL2 */
+ { cypress_compute_slot, 10 }, /* MT_CLS_CYPRESS */
};

static void mt_feature_mapping(struct hid_device *hdev, struct hid_input *hi,
@@ -414,6 +424,11 @@ static const struct hid_device_id mt_devices[] = {
HID_USB_DEVICE(USB_VENDOR_ID_CANDO,
USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) },

+ /* Cypress panel */
+ { .driver_data = MT_CLS_CYPRESS,
+ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
+ USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
+
{ }
};
MODULE_DEVICE_TABLE(hid, mt_devices);
--
1.7.3.4
--
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