HID: asus: Add event handler to catch unmapped Asus Vendor UsagePage codes

Various Asus devices generate HID events using the Asus Vendor specific
UsagePage 0xff31 and hid-asus will map these in its input_mapping for all
devices to which it binds (independent of any quirks).

Add an event callback which check for unmapped (because sofar unknown)
usages within the Asus Vendor UsagePage and log a warning for these.

The purpose of this patch is to help debugging / find such unmapped codes
and add them to the asus_input_mapping() function.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index a1fa2fc8c9b57fd8e3de462d35b6247bd0d3e6e3..61fb5a43c1cb7ddb7bcfc79f41f567ca837db2ad 100644 (file)
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -241,6 +241,18 @@ static int asus_report_input(struct asus_drvdata *drvdat, u8 *data, int size)
        return 1;
 }
 
+static int asus_event(struct hid_device *hdev, struct hid_field *field,
+                     struct hid_usage *usage, __s32 value)
+{
+       if ((usage->hid & HID_USAGE_PAGE) == 0xff310000 &&
+           (usage->hid & HID_USAGE) != 0x00 && !usage->type) {
+               hid_warn(hdev, "Unmapped Asus vendor usagepage code 0x%02x\n",
+                        usage->hid & HID_USAGE);
+       }
+
+       return 0;
+}
+
 static int asus_raw_event(struct hid_device *hdev,
                struct hid_report *report, u8 *data, int size)
 {
@@ -832,6 +844,7 @@ static struct hid_driver asus_driver = {
 #ifdef CONFIG_PM
        .reset_resume           = asus_reset_resume,
 #endif
+       .event                  = asus_event,
        .raw_event              = asus_raw_event
 };
 module_hid_driver(asus_driver);