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Message-Id: <20170820125814.21641-1-maxime.bellenge@gmail.com>
Date: Sun, 20 Aug 2017 14:58:14 +0200
From: Maxime Bellengé <maxime.bellenge@...il.com>
To: Jiri Kosina <jikos@...nel.org>,
Benjamin Tissoires <benjamin.tissoires@...hat.com>,
linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Maxime Bellengé <maxime.bellenge@...il.com>
Subject: [PATCH] HID: asus: Add support for Fn keys on Asus ROG G752
This patch adds support for Fn keys on Asus ROG G752 laptop.
The report descriptor is broken so I fixed it.
Tested on an Asus G752VT.
Signed-off-by: Maxime Bellengé <maxime.bellenge@...il.com>
---
drivers/hid/hid-asus.c | 29 +++++++++++++++++++++++++++++
drivers/hid/hid-core.c | 2 +-
drivers/hid/hid-ids.h | 1 +
3 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index a4a3c38bc145..2a03ed842186 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -70,6 +70,7 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
#define QUIRK_NO_CONSUMER_USAGES BIT(4)
#define QUIRK_USE_KBD_BACKLIGHT BIT(5)
#define QUIRK_T100_KEYBOARD BIT(6)
+#define QUIRK_G752_KEYBOARD BIT(7)
#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
QUIRK_NO_INIT_REPORTS | \
@@ -568,6 +569,11 @@ static void asus_remove(struct hid_device *hdev)
hid_hw_stop(hdev);
}
+static const __u8 asus_g752_fixed_rdesc[] = {
+ 0x19, 0x00, /* Usage Minimum (0x00) */
+ 0x2A, 0xFF, 0x00, /* Usage Maximum (0xFF) */
+};
+
static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
@@ -583,6 +589,27 @@ static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
}
+ if (drvdata->quirks & QUIRK_G752_KEYBOARD &&
+ *rsize == 75 && rdesc[61] == 0x15 && rdesc[62] == 0x00) {
+ /* report is missing usage mninum and maximum */
+ __u8 *new_rdesc;
+ size_t new_size = *rsize + sizeof(asus_g752_fixed_rdesc);
+
+ new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
+ if (new_rdesc == NULL)
+ return rdesc;
+
+ hid_info(hdev, "Fixing up Asus G752 keyb report descriptor\n");
+ /* copy the valid part */
+ memcpy(new_rdesc, rdesc, 61);
+ /* insert missing part */
+ memcpy(new_rdesc + 61, asus_g752_fixed_rdesc, sizeof(asus_g752_fixed_rdesc));
+ /* copy remaining data */
+ memcpy(new_rdesc + 61 + sizeof(asus_g752_fixed_rdesc), rdesc + 61, *rsize - 61);
+
+ *rsize = new_size;
+ rdesc = new_rdesc;
+ }
return rdesc;
}
@@ -596,6 +623,8 @@ static const struct hid_device_id asus_devices[] = {
USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
+ USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD),
QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 9017dcc14502..45369f5dad6e 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1979,6 +1979,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD) },
{ HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
{ HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
@@ -3125,4 +3126,3 @@ MODULE_AUTHOR("Andreas Gal");
MODULE_AUTHOR("Vojtech Pavlik");
MODULE_AUTHOR("Jiri Kosina");
MODULE_LICENSE("GPL");
-
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index c9ba4c6db74c..602409663743 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -180,6 +180,7 @@
#define USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD 0x0101
#define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1 0x1854
#define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2 0x1837
+#define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3 0x1822
#define USB_VENDOR_ID_ATEN 0x0557
#define USB_DEVICE_ID_ATEN_UC100KM 0x2004
--
2.13.5
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