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path: root/drivers/hid/usbhid
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-rw-r--r--drivers/hid/usbhid/hid-core.c27
-rw-r--r--drivers/hid/usbhid/hid-quirks.c5
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 91d610358d5..1c0bd481219 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -692,6 +692,30 @@ static void hid_fixup_logitech_descriptor(unsigned char *rdesc, int rsize)
}
}
+/*
+ * Some USB barcode readers from cypress have usage min and usage max in
+ * the wrong order
+ */
+static void hid_fixup_cypress_descriptor(unsigned char *rdesc, int rsize)
+{
+ short fixed = 0;
+ int i;
+
+ for (i = 0; i < rsize - 4; i++) {
+ if (rdesc[i] == 0x29 && rdesc [i+2] == 0x19) {
+ unsigned char tmp;
+
+ rdesc[i] = 0x19; rdesc[i+2] = 0x29;
+ tmp = rdesc[i+3];
+ rdesc[i+3] = rdesc[i+1];
+ rdesc[i+1] = tmp;
+ }
+ }
+
+ if (fixed)
+ info("Fixing up Cypress report descriptor");
+}
+
static struct hid_device *usb_hid_configure(struct usb_interface *intf)
{
struct usb_host_interface *interface = intf->cur_altsetting;
@@ -758,6 +782,9 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf)
if (quirks & HID_QUIRK_LOGITECH_DESCRIPTOR)
hid_fixup_logitech_descriptor(rdesc, rsize);
+ if (quirks & HID_QUIRK_SWAPPED_MIN_MAX)
+ hid_fixup_cypress_descriptor(rdesc, rsize);
+
#ifdef CONFIG_HID_DEBUG
printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
for (n = 0; n < rsize; n++)
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index 17a87555e32..6216f6049ec 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -92,6 +92,8 @@
#define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
#define USB_DEVICE_ID_CYPRESS_HIDCOM 0x5500
#define USB_DEVICE_ID_CYPRESS_ULTRAMOUSE 0x7417
+#define USB_DEVICE_ID_CYPRESS_BARCODE_1 0xde61
+#define USB_DEVICE_ID_CYPRESS_BARCODE_2 0xde64
#define USB_VENDOR_ID_DELL 0x413c
#define USB_DEVICE_ID_DELL_W7658 0x2005
@@ -445,6 +447,9 @@ static const struct hid_blacklist {
{ USB_VENDOR_ID_DELL, USB_DEVICE_ID_DELL_W7658, HID_QUIRK_RESET_LEDS },
+ { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1, HID_QUIRK_SWAPPED_MIN_MAX },
+ { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2, HID_QUIRK_SWAPPED_MIN_MAX },
+
{ 0, 0 }
};