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Date: Sun, 12 Jul 2009 18:20:26 +0200
From: Bruno Prémont <bonbons@...ux-vserver.org>
To: Jiri Kosina <jkosina@...e.cz>
Cc: Mark Lord <lkml@....ca>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: Re: Input driver for Twinhan USB 6253:0100 remote control
On Thu, 16 April 2009 Jiri Kosina <jkosina@...e.cz> wrote:
> On Wed, 15 Apr 2009, Mark Lord wrote:
> > > Yes, hid-belking is a good example of trivial driver that sits on
> > > a HID bus for you, as it utilizes the ->input_mapping() callback,
> > > which is probably the only callback from HID core you'd need.
> > Actually, the input-mapping() alone won't do the job here.
> > This Twinhan remote control sends single-byte codes for most
> > buttons, but some buttons send multi-byte codes, and we have to
> > discard the extraneous bytes somehow.
>
> If the usages make it through the generic HID layer (depends on the
> report descriptor of the device), then just registering hid_driver
> with ->event() set to your callback and fixing this on the fly could
> be enough.
I do have such a remote around.
I wrote the below patch to adjust it's key mappings, though I'm not
sure if/how I should deal with the number keys (0..9) with regard to
keyboard layout and/or numlock key.
I tried with KEY_0..KEY_9 (default) as well as KEY_KP0..KEY_KP9 but
neither produces optimal results on my machine (laptop with numlock
disabled and belgian keyboard layout, e.g. KEY_1 => '&' unless shift
is down)
KEY_NUMERIC_0..KEY_NUMERIC_9 are not recognized by Linux console (don't
know if/how userspace understands them)
To disable the dummy ctrl/alt/meta keys the remote sends all the time
as release events (and as press event around power and volume keys)
I do return -1 in input_mapping() and 1 in event(), looking at what
reaches listener on event device this seems to work.
Possibly the whole event() callback is not even needed.
If someone has a better idea for the mapping of some of the keys,
please tell me, especially for the following keys I just took what
did look like eventually matching:
Recall -> KEY_RESTART
Capture -> KEY_PRINT
Record List -> KEY_LIST
Preview -> KEY_PROGRAM
Teletext -> KEY_TEXT
Bruno
---
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 7831a03..d972c7d 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -152,6 +152,13 @@ config HID_GYRATION
---help---
Support for Gyration remote control.
+config HID_TWINHAN
+ tristate "Twinhan" if EMBEDDED
+ depends on USB_HID
+ default !EMBEDDED
+ ---help---
+ Support for Twinhan IR remote control.
+
config HID_KENSINGTON
tristate "Kensington" if EMBEDDED
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index db35151..9b9271d 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_HID_SUNPLUS) += hid-sunplus.o
obj-$(CONFIG_HID_GREENASIA) += hid-gaff.o
obj-$(CONFIG_HID_THRUSTMASTER) += hid-tmff.o
obj-$(CONFIG_HID_TOPSEED) += hid-topseed.o
+obj-$(CONFIG_HID_TWINHAN) += hid-twinhan.o
obj-$(CONFIG_HID_ZEROPLUS) += hid-zpff.o
obj-$(CONFIG_HID_WACOM) += hid-wacom.o
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index f2c21d5..ed8766f 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1312,6 +1312,7 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 6301010..a20fef8 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -403,6 +403,9 @@
#define USB_VENDOR_ID_TURBOX 0x062a
#define USB_DEVICE_ID_TURBOX_KEYBOARD 0x0201
+#define USB_VENDOR_ID_TWINHAN 0x6253
+#define USB_DEVICE_ID_TWINHAN_IR_REMOTE 0x0100
+
#define USB_VENDOR_ID_UCLOGIC 0x5543
#define USB_DEVICE_ID_UCLOGIC_TABLET_PF1209 0x0042
diff --git a/drivers/hid/hid-twinhan.c b/drivers/hid/hid-twinhan.c
new file mode 100644
index 0000000..6f00a67
--- /dev/null
+++ b/drivers/hid/hid-twinhan.c
@@ -0,0 +1,170 @@
+/*
+ * HID driver for TwinHan IR remote control
+ *
+ * Based on hid-gyration.c
+ *
+ * Copyright (c) 2009 Bruno Prémont <bonbons@...ux-vserver.org>
+ */
+
+/*
+ * 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.
+ */
+
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+/* Remote control key layout + listing:
+ *
+ * Full Screen Power
+ * KEY_SCREEN KEY_POWER2
+ *
+ * 1 2 3
+ * KEY_1 KEY_2 KEY_3
+ *
+ * 4 5 6
+ * KEY_4 KEY_5 KEY_6
+ *
+ * 7 8 9
+ * KEY_7 KEY_8 KEY_9
+ *
+ * REC 0 Favorite
+ * KEY_RECORD KEY_0 KEY_FAVORITES
+ *
+ * Rewind Forward
+ * KEY_REWIND CH+ KEY_FORWARD
+ * KEY_CHANNELUP
+ *
+ * VOL- > VOL+
+ * KEY_VOLUMEDOWN KEY_PLAY KEY_VOLUMEUP
+ *
+ * CH-
+ * KEY_CHANNELDOWN
+ * Recall Stop
+ * KEY_RESTART KEY_STOP
+ *
+ * Timeshift/Pause Mute Cancel
+ * KEY_PAUSE KEY_MUTE KEY_CANCEL
+ *
+ * Capture Preview EPG
+ * KEY_PRINT KEY_PROGRAM KEY_EPG
+ *
+ * Record List Tab Teletext
+ * KEY_LIST KEY_TAB KEY_TEXT
+ */
+
+#define th_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
+ EV_KEY, (c))
+static int twinhan_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ if ((usage->hid & HID_USAGE_PAGE) != HID_UP_KEYBOARD)
+ return 0;
+
+ // set_bit(EV_REP, hi->input->evbit);
+ switch (usage->hid & HID_USAGE) {
+ /* Kill the extra keys used for multi-key "power" and "volume" keys
+ * as well as continuously to release CTRL,ALT,META,... keys */
+ case 0x0e0:
+ case 0x0e1:
+ case 0x0e2:
+ case 0x0e3:
+ case 0x0e4:
+ case 0x0e5:
+ case 0x0e6:
+ case 0x0e7:
+ return -1;
+
+ /* Map all keys from Twinhan Remote */
+ case 0x01d: th_map_key_clear(KEY_SCREEN); break;
+ case 0x01e: th_map_key_clear(KEY_KP1); break;
+ case 0x01f: th_map_key_clear(KEY_KP2); break;
+ case 0x020: th_map_key_clear(KEY_KP3); break;
+ case 0x021: th_map_key_clear(KEY_KP4); break;
+ case 0x022: th_map_key_clear(KEY_KP5); break;
+ case 0x023: th_map_key_clear(KEY_KP6); break;
+ case 0x024: th_map_key_clear(KEY_KP7); break;
+ case 0x025: th_map_key_clear(KEY_KP8); break;
+ case 0x026: th_map_key_clear(KEY_KP9); break;
+ case 0x027: th_map_key_clear(KEY_KP0); break;
+ case 0x04a: th_map_key_clear(KEY_RECORD); break;
+ case 0x019: th_map_key_clear(KEY_FAVORITES); break;
+ case 0x00c: th_map_key_clear(KEY_REWIND); break;
+ case 0x011: th_map_key_clear(KEY_FORWARD); break;
+ case 0x04b: th_map_key_clear(KEY_CHANNELUP); break;
+ case 0x04e: th_map_key_clear(KEY_CHANNELDOWN); break;
+ case 0x028: th_map_key_clear(KEY_PLAY); break;
+ case 0x006: th_map_key_clear(KEY_RESTART); break;
+ case 0x04d: th_map_key_clear(KEY_STOP); break;
+ case 0x017: th_map_key_clear(KEY_PAUSE); break;
+ case 0x010: th_map_key_clear(KEY_MUTE); break;
+ case 0x029: th_map_key_clear(KEY_CANCEL); break;
+ case 0x013: th_map_key_clear(KEY_PRINT); break;
+ case 0x00e: th_map_key_clear(KEY_PROGRAM); break;
+ case 0x008: th_map_key_clear(KEY_EPG); break;
+ case 0x00f: th_map_key_clear(KEY_LIST); break;
+ case 0x02b: th_map_key_clear(KEY_TAB); break;
+ case 0x004: th_map_key_clear(KEY_TEXT); break;
+ /* Power = 0x0e0 + 0x0e1 + 0x0e2 + 0x03f */
+ case 0x03f: th_map_key_clear(KEY_POWER2); break;
+ /* Volume down = 0x0e1 + 0x051 */
+ case 0x051: th_map_key_clear(KEY_VOLUMEDOWN); break;
+ /* Volume up = 0x0e1 + 0x052 */
+ case 0x052: th_map_key_clear(KEY_VOLUMEUP); break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+static int twinhan_event(struct hid_device *hdev, struct hid_field *field,
+ struct hid_usage *usage, __s32 value)
+{
+ if ((usage->hid & HID_USAGE_PAGE) == HID_UP_KEYBOARD)
+ switch (usage->hid & HID_USAGE) {
+ case 0x0e0:
+ case 0x0e1:
+ case 0x0e2:
+ case 0x0e3:
+ case 0x0e4:
+ case 0x0e5:
+ case 0x0e6:
+ case 0x0e7:
+ return 1;
+ }
+
+ return 0;
+}
+
+static const struct hid_device_id twinhan_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, twinhan_devices);
+
+static struct hid_driver twinhan_driver = {
+ .name = "twinhan",
+ .id_table = twinhan_devices,
+ .input_mapping = twinhan_input_mapping,
+ .event = twinhan_event,
+};
+
+static int twinhan_init(void)
+{
+ return hid_register_driver(&twinhan_driver);
+}
+
+static void twinhan_exit(void)
+{
+ hid_unregister_driver(&twinhan_driver);
+}
+
+module_init(twinhan_init);
+module_exit(twinhan_exit);
+MODULE_LICENSE("GPL");
--
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