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-rw-r--r--drivers/hid/usbhid/hid-core.c45
-rw-r--r--include/linux/hid.h1
2 files changed, 46 insertions, 0 deletions
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 762cb35e769b..cec3bffa0a9a 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -129,6 +129,9 @@ MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
#define USB_DEVICE_ID_CYPRESS_HIDCOM 0x5500
#define USB_DEVICE_ID_CYPRESS_ULTRAMOUSE 0x7417
+#define USB_VENDOR_ID_DELL 0x413c
+#define USB_DEVICE_ID_DELL_W7658 0x2005
+
#define USB_VENDOR_ID_DELORME 0x1163
#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
#define USB_DEVICE_ID_DELORME_EM_LT20 0x0200
@@ -469,6 +472,8 @@ static const struct hid_blacklist {
{ USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY, HID_QUIRK_POWERBOOK_HAS_FN | HID_QUIRK_IGNORE_MOUSE },
{ USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY, HID_QUIRK_POWERBOOK_HAS_FN | HID_QUIRK_IGNORE_MOUSE },
+ { USB_VENDOR_ID_DELL, USB_DEVICE_ID_DELL_W7658, HID_QUIRK_RESET_LEDS },
+
{ 0, 0 }
};
@@ -964,6 +969,44 @@ void usbhid_init_reports(struct hid_device *hid)
}
/*
+ * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
+ */
+static int hid_find_field_early(struct hid_device *hid, unsigned int page,
+ unsigned int hid_code, struct hid_field **pfield)
+{
+ struct hid_report *report;
+ struct hid_field *field;
+ struct hid_usage *usage;
+ int i, j;
+
+ list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
+ for (i = 0; i < report->maxfield; i++) {
+ field = report->field[i];
+ for (j = 0; j < field->maxusage; j++) {
+ usage = &field->usage[j];
+ if ((usage->hid & HID_USAGE_PAGE) == page &&
+ (usage->hid & 0xFFFF) == hid_code) {
+ *pfield = field;
+ return j;
+ }
+ }
+ }
+ }
+ return -1;
+}
+
+static void usbhid_set_leds(struct hid_device *hid)
+{
+ struct hid_field *field;
+ int offset;
+
+ if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) {
+ hid_set_field(field, offset, 0);
+ usbhid_submit_report(hid, field->report, USB_DIR_OUT);
+ }
+}
+
+/*
* Traverse the supplied list of reports and find the longest
*/
static void hid_find_max_report(struct hid_device *hid, unsigned int type, int *max)
@@ -1348,6 +1391,8 @@ static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
usbhid_init_reports(hid);
hid_dump_device(hid);
+ if (hid->quirks & HID_QUIRK_RESET_LEDS)
+ usbhid_set_leds(hid);
if (!hidinput_connect(hid))
hid->claimed |= HID_CLAIMED_INPUT;
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 55184415fd6b..d73b24b1e265 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -269,6 +269,7 @@ struct hid_item {
#define HID_QUIRK_SONY_PS3_CONTROLLER 0x00080000
#define HID_QUIRK_LOGITECH_DESCRIPTOR 0x00100000
#define HID_QUIRK_DUPLICATE_USAGES 0x00200000
+#define HID_QUIRK_RESET_LEDS 0x00400000
/*
* This is the global environment of the parser. This information is
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