HID: rmi: do not handle touchscreens through hid-rmi

Currently, hid-rmi drives every Synaptics product, but the touchscreens
on the Windows tablets should be handled through hid-multitouch.

Instead of providing a long list of PIDs, rely on the scan_report
capability to detect which should go to hid-multitouch, and which
should not go to hid-rmi.

related bug:
https://bugzilla.kernel.org/show_bug.cgi?id=74241
https://bugzilla.redhat.com/show_bug.cgi?id=1089583

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index f05255d..64c71c8 100644 (file)
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -776,6 +776,14 @@ static int hid_scan_report(struct hid_device *hid)
            (hid->group == HID_GROUP_MULTITOUCH))
                hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 
+       /*
+       * Vendor specific handlings
+       */
+       if ((hid->vendor == USB_VENDOR_ID_SYNAPTICS) &&
+           (hid->group == HID_GROUP_GENERIC))
+               /* hid-rmi should take care of them, not hid-generic */
+               hid->group = HID_GROUP_RMI;
+
        vfree(parser);
        return 0;
 }
@@ -1882,8 +1890,6 @@ static const struct hid_device_id hid_have_special_driver[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
-       { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) },
-       { HID_I2C_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },

diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index c529b03..2451c7e 100644 (file)
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -894,8 +894,7 @@ static void rmi_remove(struct hid_device *hdev)
 }
 
 static const struct hid_device_id rmi_id[] = {
-       { HID_I2C_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) },
-       { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) },
+       { HID_DEVICE(HID_BUS_ANY, HID_GROUP_RMI, HID_ANY_ID, HID_ANY_ID) },
        { }
 };
 MODULE_DEVICE_TABLE(hid, rmi_id);

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 54f855b..8ce9ff4 100644 (file)
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -299,12 +299,20 @@ struct hid_item {
 
 /*
  * HID device groups
+ *
+ * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h
+ * and has a value of 0x0000
  */
 #define HID_GROUP_GENERIC                      0x0001
 #define HID_GROUP_MULTITOUCH                   0x0002
 #define HID_GROUP_SENSOR_HUB                   0x0003
 #define HID_GROUP_MULTITOUCH_WIN_8             0x0004
 
+/*
+ * Vendor specific HID device groups
+ */
+#define HID_GROUP_RMI                          0x0100
+
 /*
  * This is the global environment of the parser. This information is
  * persistent for main-items. The global environment can be saved and