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@xxxxxxxxx> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html