[PATCH v2] HID: Add quirk driver for NTI USB-SUN adapter
From: Jonathan Tomer
Date: Wed Feb 01 2017 - 14:55:14 EST
These adapters allow pre-USB Sun keyboards to be connected to USB-only
machines, but include the wrong maximum keycode in their report
descriptor, making most of the keys present on Sun keyboards but not
101-key PC keyboards nonfunctional.
This patch implements a quirk that overrides the maximum keycode in the
report descriptor.
Signed-off-by: Jonathan Tomer <jktomer@xxxxxxxxxx>
---
Changes in v2:
- Remove unneeded guard in Kconfig
- Simplify registration code by using module_hid_driver() instead of
module_{init,exit}
- add MODULE_{AUTHOR,DESCRIPTION}
drivers/hid/Kconfig | 6 +++++
drivers/hid/Makefile | 1 +
drivers/hid/hid-core.c | 1 +
drivers/hid/hid-ids.h | 3 +++
drivers/hid/hid-nti.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 70 insertions(+)
create mode 100644 drivers/hid/hid-nti.c
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 4070b7386e9d..98f90410b94e 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -580,6 +580,12 @@ config HID_MULTITOUCH
To compile this driver as a module, choose M here: the
module will be called hid-multitouch.
+config HID_NTI
+ tristate "NTI keyboard adapters"
+ ---help---
+ Support for the "extra" Sun keyboard keys on keyboards attached
+ through Network Technologies USB-SUN keyboard adapters.
+
config HID_NTRIG
tristate "N-Trig touch screen"
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 4d111f23e801..c0a844b43dcc 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -62,6 +62,7 @@ obj-$(CONFIG_HID_MAYFLASH) += hid-mf.o
obj-$(CONFIG_HID_MICROSOFT) += hid-microsoft.o
obj-$(CONFIG_HID_MONTEREY) += hid-monterey.o
obj-$(CONFIG_HID_MULTITOUCH) += hid-multitouch.o
+obj-$(CONFIG_HID_NTI) += hid-nti.o
obj-$(CONFIG_HID_NTRIG) += hid-ntrig.o
obj-$(CONFIG_HID_ORTEK) += hid-ortek.o
obj-$(CONFIG_HID_PRODIKEYS) += hid-prodikeys.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index cff060b56da9..3a435bf75e4d 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1997,6 +1997,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER) },
{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
{ HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_NTI, USB_DEVICE_ID_USB_SUN) },
{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 54bd22dc1411..9f79e7e657a4 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -767,6 +767,9 @@
#define USB_DEVICE_ID_NOVATEK_PCT 0x0600
#define USB_DEVICE_ID_NOVATEK_MOUSE 0x1602
+#define USB_VENDOR_ID_NTI 0x0757
+#define USB_DEVICE_ID_USB_SUN 0x0a00
+
#define USB_VENDOR_ID_NTRIG 0x1b96
#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN 0x0001
#define USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1 0x0003
diff --git a/drivers/hid/hid-nti.c b/drivers/hid/hid-nti.c
new file mode 100644
index 000000000000..5bb827b223ba
--- /dev/null
+++ b/drivers/hid/hid-nti.c
@@ -0,0 +1,59 @@
+/*
+ * USB HID quirks support for Network Technologies, Inc. "USB-SUN" USB
+ * adapter for pre-USB Sun keyboards
+ *
+ * Copyright (c) 2011 Google, Inc.
+ *
+ * Based on HID apple driver by
+ * Copyright (c) 1999 Andreas Gal
+ * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@xxxxxxx>
+ * Copyright (c) 2005 Michael Haboustak <mike-@xxxxxxxxxxxx> for Concept2, Inc
+ * Copyright (c) 2006-2007 Jiri Kosina
+ * Copyright (c) 2008 Jiri Slaby <jirislaby@xxxxxxxxx>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+MODULE_AUTHOR("Jonathan Klabunde Tomer <jktomer@xxxxxxxxxx>");
+MODULE_DESCRIPTION("HID driver for Network Technologies USB-SUN keyboard adapter");
+
+/*
+ * NTI Sun keyboard adapter has wrong logical maximum in report descriptor
+ */
+static __u8 *nti_usbsun_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ if (*rsize >= 60 && rdesc[53] == 0x65 && rdesc[59] == 0x65) {
+ hid_info(hdev, "fixing up NTI USB-SUN keyboard adapter report descriptor\n");
+ rdesc[53] = rdesc[59] = 0xe7;
+ }
+ return rdesc;
+}
+
+static const struct hid_device_id nti_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_NTI, USB_DEVICE_ID_USB_SUN) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, nti_devices);
+
+static struct hid_driver nti_driver = {
+ .name = "nti",
+ .id_table = nti_devices,
+ .report_fixup = nti_usbsun_report_fixup
+};
+
+module_hid_driver(nti_driver);
+
+MODULE_LICENSE("GPL");
--
2.11.0.483.g087da7b7c-goog