linux-kernel - [PATCH 1/2] sony_ff_hid

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Message-Id: <1306145999-15643-1-git-send-email-simon@mungewell.org>
Date:	Mon, 23 May 2011 03:19:58 -0700
From:	Simon Wood <simon@...gewell.org>
To:	linux-input@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Antonio Ospite <ospite@...denti.unina.it>,
	Marcin Tolysz <tolysz@...il.com>,
	Jiri Kosina <jkosina@...e.cz>, Simon Wood <simon@...gewell.org>
Subject: [PATCH 1/2] sony_ff_hid_descriptor

This patch modifies the HID descriptor to allow the reporting of
the accelerometers and gyro via a joystick axis.
---
 drivers/hid/hid-sony.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index 936c911..5c930dc 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -28,6 +28,12 @@
 #define SIXAXIS_CONTROLLER_USB  (1 << 1)
 #define SIXAXIS_CONTROLLER_BT   (1 << 2)
 
+static const u8 sixaxis_rdesc_fixup[] = {
+	0x95, 0x13, 0x09, 0x01, 0x81, 0x02, 0x95, 0x0C,
+	0x81, 0x01, 0x75, 0x10, 0x95, 0x04, 0x26, 0xFF, 
+	0x03, 0x46, 0xFF, 0x03, 0x09, 0x01, 0x81, 0x02
+	};
+
 struct sony_sc {
 	unsigned long quirks;
 };
@@ -43,6 +49,11 @@ static __u8 *sony_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		hid_info(hdev, "Fixing up Sony Vaio VGX report descriptor\n");
 		rdesc[55] = 0x06;
 	}
+	if ((sc->quirks & SIXAXIS_CONTROLLER_USB) &&
+			*rsize == 148 && rdesc[83] == 0x75) {
+		hid_info(hdev, "Fixing up Sony Sixaxis report descriptor\n");
+		memcpy((void *)&rdesc[83], (void *) &sixaxis_rdesc_fixup, sizeof(sixaxis_rdesc_fixup));
+	}
 	return rdesc;
 }
 
-- 
1.7.4.1

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