HID: add support for another version of 0e8f:0003 device in hid-pl

Add support for another version of 0e8f:0003 device into hid-pl driver.
This device has the values in separate fields and resembles devices
handled by hid-zpff.

Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Tested-by: Pantelis Koukousoulas <pktoss@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 38 insertions, 12 deletions

diff --git a/drivers/hid/hid-pl.c b/drivers/hid/hid-pl.c
index 46941f979b9d..9ad76bf71186 100644
--- a/drivers/hid/hid-pl.c
+++ b/drivers/hid/hid-pl.c
@@ -9,9 +9,12 @@
  *   - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT)
  *
  *  0e8f:0003 "GreenAsia Inc.    USB Joystick     "
- *   - tested with K??ng Gaming gamepad
+ *   - tested with König Gaming gamepad
  *
- *  Copyright (c) 2007 Anssi Hannula <anssi.hannula@gmail.com>
+ *  0e8f:0003 "GASIA USB Gamepad"
+ *   - another version of the König gamepad
+ *
+ *  Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com>
  */
 
 /*
@@ -46,6 +49,8 @@
 
 struct plff_device {
         struct hid_report *report;
+        s32 *strong;
+        s32 *weak;
 };
 
 static int hid_plff_play(struct input_dev *dev, void *data,
@@ -62,8 +67,8 @@ static int hid_plff_play(struct input_dev *dev, void *data,
         left = left * 0x7f / 0xffff;
         right = right * 0x7f / 0xffff;
 
-        plff->report->field[0]->value[2] = left;
-        plff->report->field[0]->value[3] = right;
+        *plff->strong = left;
+        *plff->weak = right;
         debug("running with 0x%02x 0x%02x", left, right);
         usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
 
@@ -80,6 +85,8 @@ static int plff_init(struct hid_device *hid)
         struct list_head *report_ptr = report_list;
         struct input_dev *dev;
         int error;
+        s32 *strong;
+        s32 *weak;
 
         /* The device contains one output report per physical device, all
            containing 1 field, which contains 4 ff00.0002 usages and 4 16bit
@@ -87,7 +94,12 @@ static int plff_init(struct hid_device *hid)
 
            The input reports also contain a field which contains
            8 ff00.0001 usages and 8 boolean values. Their meaning is
-           currently unknown. */
+           currently unknown.
+           
+           A version of the 0e8f:0003 exists that has all the values in
+           separate fields and misses the extra input field, thus resembling
+           Zeroplus (hid-zpff) devices.
+        */
 
         if (list_empty(report_list)) {
                 dev_err(&hid->dev, "no output reports found\n");
@@ -110,8 +122,21 @@ static int plff_init(struct hid_device *hid)
                         return -ENODEV;
                 }
 
-                if (report->field[0]->report_count < 4) {
-                        dev_err(&hid->dev, "not enough values in the field\n");
+                if (report->field[0]->report_count >= 4) {
+                        report->field[0]->value[0] = 0x00;
+                        report->field[0]->value[1] = 0x00;
+                        strong = &report->field[0]->value[2];
+                        weak = &report->field[0]->value[3];
+                        debug("detected single-field device");
+                } else if (report->maxfield >= 4 && report->field[0]->maxusage == 1 &&
+                                report->field[0]->usage[0].hid == (HID_UP_LED | 0x43)) {
+                        report->field[0]->value[0] = 0x00;
+                        report->field[1]->value[0] = 0x00;
+                        strong = &report->field[2]->value[0];
+                        weak = &report->field[3]->value[0];
+                        debug("detected 4-field device");
+                } else {
+                        dev_err(&hid->dev, "not enough fields or values\n");
                         return -ENODEV;
                 }
 
@@ -130,10 +155,11 @@ static int plff_init(struct hid_device *hid)
                 }
 
                 plff->report = report;
-                plff->report->field[0]->value[0] = 0x00;
-                plff->report->field[0]->value[1] = 0x00;
-                plff->report->field[0]->value[2] = 0x00;
-                plff->report->field[0]->value[3] = 0x00;
+                plff->strong = strong;
+                plff->weak = weak;
+
+                *strong = 0x00;
+                *weak = 0x00;
                 usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
         }
 
@@ -180,7 +206,7 @@ static const struct hid_device_id pl_devices[] = {
                 .driver_data = 1 }, /* Twin USB Joystick */
         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR),
                 .driver_data = 1 }, /* Twin USB Joystick */
-        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), }, /* GreenAsia Inc. USB Joystick */
+        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), },
         { }
 };
 MODULE_DEVICE_TABLE(hid, pl_devices);