1 files changed, 144 insertions, 11 deletions

diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index a78f5187b6ef..a75c236fcafc 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -299,8 +299,6 @@ static const struct hid_blacklist {
         { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
         { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
         
-        { USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION, HID_QUIRK_CYMOTION },
-
         { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE, HID_QUIRK_DUPLICATE_USAGES },
 
         { USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM, HID_QUIRK_HIDDEV },
@@ -424,17 +422,11 @@ static const struct hid_blacklist {
         { USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR, HID_QUIRK_IGNORE },
         { USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302, HID_QUIRK_IGNORE },
 
-        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER, HID_QUIRK_LOGITECH_DESCRIPTOR },
-        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER, HID_QUIRK_LOGITECH_DESCRIPTOR },
-        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2, HID_QUIRK_LOGITECH_DESCRIPTOR },
-
         { USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE, HID_QUIRK_MIGHTYMOUSE | HID_QUIRK_INVERT_HWHEEL },
 
         { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
         { USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII, HID_QUIRK_MULTI_INPUT },
 
-        { USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE, HID_QUIRK_PETALYNX_DESCRIPTOR | HID_QUIRK_NOGET },
-
         { USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER, HID_QUIRK_SONY_PS3_CONTROLLER },
 
         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
@@ -443,6 +435,7 @@ static const struct hid_blacklist {
         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL, HID_QUIRK_NOGET },
+        { USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
@@ -466,8 +459,26 @@ 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 }
+};
+
+/* Quirks for devices which require report descriptor fixup go here */
+static const struct hid_rdesc_blacklist {
+        __u16 idVendor;
+        __u16 idProduct;
+        __u32 quirks;
+} hid_rdesc_blacklist[] = {
+
+        { USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION, HID_QUIRK_RDESC_CYMOTION },
+
+        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER, HID_QUIRK_RDESC_LOGITECH },
+        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER, HID_QUIRK_RDESC_LOGITECH },
+        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2, HID_QUIRK_RDESC_LOGITECH },
+
+        { USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE, HID_QUIRK_RDESC_PETALYNX },
+
+        { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1, HID_QUIRK_RDESC_SWAPPED_MIN_MAX },
+        { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2, HID_QUIRK_RDESC_SWAPPED_MIN_MAX },
 
         { 0, 0 }
 };
@@ -576,7 +587,6 @@ int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
         return 0;
 }
 
-
 /**
  * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
  *
@@ -709,3 +719,126 @@ u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
         return quirks;
 }
 
+/*
+ * Cherry Cymotion keyboard have an invalid HID report descriptor,
+ * that needs fixing before we can parse it.
+ */
+static void usbhid_fixup_cymotion_descriptor(char *rdesc, int rsize)
+{
+        if (rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {
+                printk(KERN_INFO "Fixing up Cherry Cymotion report descriptor\n");
+                rdesc[11] = rdesc[16] = 0xff;
+                rdesc[12] = rdesc[17] = 0x03;
+        }
+}
+
+
+/*
+ * Certain Logitech keyboards send in report #3 keys which are far
+ * above the logical maximum described in descriptor. This extends
+ * the original value of 0x28c of logical maximum to 0x104d
+ */
+static void usbhid_fixup_logitech_descriptor(unsigned char *rdesc, int rsize)
+{
+        if (rsize >= 90 && rdesc[83] == 0x26
+                        && rdesc[84] == 0x8c
+                        && rdesc[85] == 0x02) {
+                printk(KERN_INFO "Fixing up Logitech keyboard report descriptor\n");
+                rdesc[84] = rdesc[89] = 0x4d;
+                rdesc[85] = rdesc[90] = 0x10;
+        }
+}
+
+/* Petalynx Maxter Remote has maximum for consumer page set too low */
+static void usbhid_fixup_petalynx_descriptor(unsigned char *rdesc, int rsize)
+{
+        if (rsize >= 60 && rdesc[39] == 0x2a
+                        && rdesc[40] == 0xf5
+                        && rdesc[41] == 0x00
+                        && rdesc[59] == 0x26
+                        && rdesc[60] == 0xf9
+                        && rdesc[61] == 0x00) {
+                printk(KERN_INFO "Fixing up Petalynx Maxter Remote report descriptor\n");
+                rdesc[60] = 0xfa;
+                rdesc[40] = 0xfa;
+        }
+}
+
+/*
+ * Some USB barcode readers from cypress have usage min and usage max in
+ * the wrong order
+ */
+static void usbhid_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)
+                printk(KERN_INFO "Fixing up Cypress report descriptor\n");
+}
+
+
+static void __usbhid_fixup_report_descriptor(__u32 quirks, char *rdesc, unsigned rsize)
+{
+        if ((quirks & HID_QUIRK_RDESC_CYMOTION))
+                usbhid_fixup_cymotion_descriptor(rdesc, rsize);
+
+        if (quirks & HID_QUIRK_RDESC_LOGITECH)
+                usbhid_fixup_logitech_descriptor(rdesc, rsize);
+
+        if (quirks & HID_QUIRK_RDESC_SWAPPED_MIN_MAX)
+                usbhid_fixup_cypress_descriptor(rdesc, rsize);
+
+        if (quirks & HID_QUIRK_RDESC_PETALYNX)
+                usbhid_fixup_petalynx_descriptor(rdesc, rsize);
+}
+
+/**
+ * usbhid_fixup_report_descriptor: check if report descriptor needs fixup
+ *
+ * Description:
+ *      Walks the hid_rdesc_blacklist[] array and checks whether the device
+ *      is known to have broken report descriptor that needs to be fixed up
+ *      prior to entering the HID parser
+ *
+ * Returns: nothing
+ */
+void usbhid_fixup_report_descriptor(const u16 idVendor, const u16 idProduct,
+                                    char *rdesc, unsigned rsize, char **quirks_param)
+{
+        int n, m;
+        u16 paramVendor, paramProduct;
+        u32 quirks;
+
+        /* static rdesc quirk entries */
+        for (n = 0; hid_rdesc_blacklist[n].idVendor; n++)
+                if (hid_rdesc_blacklist[n].idVendor == idVendor &&
+                                hid_rdesc_blacklist[n].idProduct == idProduct)
+                        __usbhid_fixup_report_descriptor(hid_rdesc_blacklist[n].quirks,
+                                        rdesc, rsize);
+
+        /* runtime rdesc quirk entries handling */
+        for (n = 0; quirks_param[n] && n < MAX_USBHID_BOOT_QUIRKS; n++) {
+                m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
+                                &paramVendor, &paramProduct, &quirks);
+
+                if (m != 3)
+                        printk(KERN_WARNING
+                                "Could not parse HID quirk module param %s\n",
+                                quirks_param[n]);
+                else if (paramVendor == idVendor && paramProduct == idProduct)
+                        __usbhid_fixup_report_descriptor(quirks, rdesc, rsize);
+        }
+
+}