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Message-Id: <20160927184138.3009-1-adi@adirat.com>
Date:   Tue, 27 Sep 2016 21:41:37 +0300
From:   Ioan-Adrian Ratiu <adi@...rat.com>
To:     benjamin.tissoires@...hat.com, jikos@...nel.org
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        spbnick@...il.com
Subject: [PATCH v2 1/2] Revert "HID: dragonrise: fix HID Descriptor for 0x0006 PID"

This reverts commit 18339f59c3a6 ("HID: dragonrise: fix HID...") because it
breaks certain dragonrise 0079:0006 gamepads. While it may fix a breakage
caused by commit 79346d620e9d ("HID: input: force generic axis to be mapped
to their user space axis"), it is probable that the manufacturer released
different hardware with the same PID so this fix works for only a subset
and breaks the other gamepads sharing the PID.

What is needed is another more generic solution which fixes 79346d620e9d
("HID: input: force generic axis ...") breakage for this controller: we
need to add an exception for this driver to make it keep the old behaviour
previous to the initial breakage (this is done in patch 2 of this series).

Signed-off-by: Ioan-Adrian Ratiu <adi@...rat.com>
---
 drivers/hid/hid-dr.c | 58 ----------------------------------------------------
 1 file changed, 58 deletions(-)

diff --git a/drivers/hid/hid-dr.c b/drivers/hid/hid-dr.c
index 8fd4bf7..2523f8a 100644
--- a/drivers/hid/hid-dr.c
+++ b/drivers/hid/hid-dr.c
@@ -234,58 +234,6 @@ static __u8 pid0011_rdesc_fixed[] = {
 	0xC0                /*  End Collection                  */
 };
 
-static __u8 pid0006_rdesc_fixed[] = {
-	0x05, 0x01,        /* Usage Page (Generic Desktop)	*/
-	0x09, 0x04,        /* Usage (Joystick)			*/
-	0xA1, 0x01,        /* Collection (Application)		*/
-	0xA1, 0x02,        /*   Collection (Logical)		*/
-	0x75, 0x08,        /*     Report Size (8)		*/
-	0x95, 0x05,        /*     Report Count (5)		*/
-	0x15, 0x00,        /*     Logical Minimum (0)		*/
-	0x26, 0xFF, 0x00,  /*     Logical Maximum (255)		*/
-	0x35, 0x00,        /*     Physical Minimum (0)		*/
-	0x46, 0xFF, 0x00,  /*     Physical Maximum (255)	*/
-	0x09, 0x30,        /*     Usage (X)			*/
-	0x09, 0x33,        /*     Usage (Ry)			*/
-	0x09, 0x32,        /*     Usage (Z)			*/
-	0x09, 0x31,        /*     Usage (Y)			*/
-	0x09, 0x34,        /*     Usage (Ry)			*/
-	0x81, 0x02,        /*     Input (Variable)		*/
-	0x75, 0x04,        /*     Report Size (4)		*/
-	0x95, 0x01,        /*     Report Count (1)		*/
-	0x25, 0x07,        /*     Logical Maximum (7)		*/
-	0x46, 0x3B, 0x01,  /*     Physical Maximum (315)	*/
-	0x65, 0x14,        /*     Unit (Centimeter)		*/
-	0x09, 0x39,        /*     Usage (Hat switch)		*/
-	0x81, 0x42,        /*     Input (Variable)		*/
-	0x65, 0x00,        /*     Unit (None)			*/
-	0x75, 0x01,        /*     Report Size (1)		*/
-	0x95, 0x0C,        /*     Report Count (12)		*/
-	0x25, 0x01,        /*     Logical Maximum (1)		*/
-	0x45, 0x01,        /*     Physical Maximum (1)		*/
-	0x05, 0x09,        /*     Usage Page (Button)		*/
-	0x19, 0x01,        /*     Usage Minimum (0x01)		*/
-	0x29, 0x0C,        /*     Usage Maximum (0x0C)		*/
-	0x81, 0x02,        /*     Input (Variable)		*/
-	0x06, 0x00, 0xFF,  /*     Usage Page (Vendor Defined)	*/
-	0x75, 0x01,        /*     Report Size (1)		*/
-	0x95, 0x08,        /*     Report Count (8)		*/
-	0x25, 0x01,        /*     Logical Maximum (1)		*/
-	0x45, 0x01,        /*     Physical Maximum (1)		*/
-	0x09, 0x01,        /*     Usage (0x01)			*/
-	0x81, 0x02,        /*     Input (Variable)		*/
-	0xC0,              /*   End Collection			*/
-	0xA1, 0x02,        /*   Collection (Logical)		*/
-	0x75, 0x08,        /*     Report Size (8)		*/
-	0x95, 0x07,        /*     Report Count (7)		*/
-	0x46, 0xFF, 0x00,  /*     Physical Maximum (255)	*/
-	0x26, 0xFF, 0x00,  /*     Logical Maximum (255)		*/
-	0x09, 0x02,        /*     Usage (0x02)			*/
-	0x91, 0x02,        /*     Output (Variable)		*/
-	0xC0,              /*   End Collection			*/
-	0xC0               /* End Collection			*/
-};
-
 static __u8 *dr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 				unsigned int *rsize)
 {
@@ -296,12 +244,6 @@ static __u8 *dr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 			*rsize = sizeof(pid0011_rdesc_fixed);
 		}
 		break;
-	case 0x0006:
-		if (*rsize == sizeof(pid0006_rdesc_fixed)) {
-			rdesc = pid0006_rdesc_fixed;
-			*rsize = sizeof(pid0006_rdesc_fixed);
-		}
-		break;
 	}
 	return rdesc;
 }
-- 
2.10.0

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