HID: move apple quirks

Move them from the core code to a separate driver.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 479 insertions, 0 deletions

diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
new file mode 100644
index 0000000..5642e2c
--- /dev/null
+++ b/drivers/hid/hid-apple.c
@@ -0,0 +1,479 @@
+/*
+ *  USB HID quirks support for Linux
+ *
+ *  Copyright (c) 1999 Andreas Gal
+ *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ *  Copyright (c) 2006-2007 Jiri Kosina
+ *  Copyright (c) 2007 Paul Walmsley
+ *  Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
+ */
+
+/*
+ * 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/hid.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include "hid-ids.h"
+
+#define APPLE_RDESC_JIS		0x0001
+#define APPLE_IGNORE_MOUSE	0x0002
+#define APPLE_HAS_FN		0x0004
+#define APPLE_HIDDEV		0x0008
+#define APPLE_ISO_KEYBOARD	0x0010
+#define APPLE_MIGHTYMOUSE	0x0020
+#define APPLE_INVERT_HWHEEL	0x0040
+#define APPLE_IGNORE_HIDINPUT	0x0080
+#define APPLE_NUMLOCK_EMULATION	0x0100
+
+#define APPLE_FLAG_FKEY		0x01
+
+static unsigned int fnmode = 1;
+module_param(fnmode, uint, 0644);
+MODULE_PARM_DESC(fnmode, "Mode of fn key on Apple keyboards (0 = disabled, "
+		"[1] = fkeyslast, 2 = fkeysfirst)");
+
+struct apple_sc {
+	unsigned long quirks;
+	unsigned int fn_on;
+	DECLARE_BITMAP(pressed_fn, KEY_CNT);
+	DECLARE_BITMAP(pressed_numlock, KEY_CNT);
+};
+
+struct apple_key_translation {
+	u16 from;
+	u16 to;
+	u8 flags;
+};
+
+static struct apple_key_translation apple_fn_keys[] = {
+	{ KEY_BACKSPACE, KEY_DELETE },
+	{ KEY_F1,	KEY_BRIGHTNESSDOWN, APPLE_FLAG_FKEY },
+	{ KEY_F2,	KEY_BRIGHTNESSUP,   APPLE_FLAG_FKEY },
+	{ KEY_F3,	KEY_FN_F5,          APPLE_FLAG_FKEY }, /* Exposé */
+	{ KEY_F4,	KEY_FN_F4,          APPLE_FLAG_FKEY }, /* Dashboard */
+	{ KEY_F5,	KEY_KBDILLUMDOWN,   APPLE_FLAG_FKEY },
+	{ KEY_F6,	KEY_KBDILLUMUP,     APPLE_FLAG_FKEY },
+	{ KEY_F7,	KEY_PREVIOUSSONG,   APPLE_FLAG_FKEY },
+	{ KEY_F8,	KEY_PLAYPAUSE,      APPLE_FLAG_FKEY },
+	{ KEY_F9,	KEY_NEXTSONG,       APPLE_FLAG_FKEY },
+	{ KEY_F10,	KEY_MUTE,           APPLE_FLAG_FKEY },
+	{ KEY_F11,	KEY_VOLUMEDOWN,     APPLE_FLAG_FKEY },
+	{ KEY_F12,	KEY_VOLUMEUP,       APPLE_FLAG_FKEY },
+	{ KEY_UP,	KEY_PAGEUP },
+	{ KEY_DOWN,	KEY_PAGEDOWN },
+	{ KEY_LEFT,	KEY_HOME },
+	{ KEY_RIGHT,	KEY_END },
+	{ }
+};
+
+static struct apple_key_translation powerbook_fn_keys[] = {
+	{ KEY_BACKSPACE, KEY_DELETE },
+	{ KEY_F1,	KEY_BRIGHTNESSDOWN,     APPLE_FLAG_FKEY },
+	{ KEY_F2,	KEY_BRIGHTNESSUP,       APPLE_FLAG_FKEY },
+	{ KEY_F3,	KEY_MUTE,               APPLE_FLAG_FKEY },
+	{ KEY_F4,	KEY_VOLUMEDOWN,         APPLE_FLAG_FKEY },
+	{ KEY_F5,	KEY_VOLUMEUP,           APPLE_FLAG_FKEY },
+	{ KEY_F6,	KEY_NUMLOCK,            APPLE_FLAG_FKEY },
+	{ KEY_F7,	KEY_SWITCHVIDEOMODE,    APPLE_FLAG_FKEY },
+	{ KEY_F8,	KEY_KBDILLUMTOGGLE,     APPLE_FLAG_FKEY },
+	{ KEY_F9,	KEY_KBDILLUMDOWN,       APPLE_FLAG_FKEY },
+	{ KEY_F10,	KEY_KBDILLUMUP,         APPLE_FLAG_FKEY },
+	{ KEY_UP,	KEY_PAGEUP },
+	{ KEY_DOWN,	KEY_PAGEDOWN },
+	{ KEY_LEFT,	KEY_HOME },
+	{ KEY_RIGHT,	KEY_END },
+	{ }
+};
+
+static struct apple_key_translation powerbook_numlock_keys[] = {
+	{ KEY_J,	KEY_KP1 },
+	{ KEY_K,	KEY_KP2 },
+	{ KEY_L,	KEY_KP3 },
+	{ KEY_U,	KEY_KP4 },
+	{ KEY_I,	KEY_KP5 },
+	{ KEY_O,	KEY_KP6 },
+	{ KEY_7,	KEY_KP7 },
+	{ KEY_8,	KEY_KP8 },
+	{ KEY_9,	KEY_KP9 },
+	{ KEY_M,	KEY_KP0 },
+	{ KEY_DOT,	KEY_KPDOT },
+	{ KEY_SLASH,	KEY_KPPLUS },
+	{ KEY_SEMICOLON, KEY_KPMINUS },
+	{ KEY_P,	KEY_KPASTERISK },
+	{ KEY_MINUS,	KEY_KPEQUAL },
+	{ KEY_0,	KEY_KPSLASH },
+	{ KEY_F6,	KEY_NUMLOCK },
+	{ KEY_KPENTER,	KEY_KPENTER },
+	{ KEY_BACKSPACE, KEY_BACKSPACE },
+	{ }
+};
+
+static struct apple_key_translation apple_iso_keyboard[] = {
+	{ KEY_GRAVE,	KEY_102ND },
+	{ KEY_102ND,	KEY_GRAVE },
+	{ }
+};
+
+static struct apple_key_translation *apple_find_translation(
+		struct apple_key_translation *table, u16 from)
+{
+	struct apple_key_translation *trans;
+
+	/* Look for the translation */
+	for (trans = table; trans->from; trans++)
+		if (trans->from == from)
+			return trans;
+
+	return NULL;
+}
+
+static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
+		struct hid_usage *usage, __s32 value)
+{
+	struct apple_sc *asc = hid_get_drvdata(hid);
+	struct apple_key_translation *trans;
+
+	if (usage->code == KEY_FN) {
+		asc->fn_on = !!value;
+		input_event(input, usage->type, usage->code, value);
+		return 1;
+	}
+
+	if (fnmode) {
+		int do_translate;
+
+		trans = apple_find_translation((hid->product < 0x220 ||
+					hid->product >= 0x300) ?
+					powerbook_fn_keys : apple_fn_keys,
+					usage->code);
+		if (trans) {
+			if (test_bit(usage->code, asc->pressed_fn))
+				do_translate = 1;
+			else if (trans->flags & APPLE_FLAG_FKEY)
+				do_translate = (fnmode == 2 && asc->fn_on) ||
+					(fnmode == 1 && !asc->fn_on);
+			else
+				do_translate = asc->fn_on;
+
+			if (do_translate) {
+				if (value)
+					set_bit(usage->code, asc->pressed_fn);
+				else
+					clear_bit(usage->code, asc->pressed_fn);
+
+				input_event(input, usage->type, trans->to,
+						value);
+
+				return 1;
+			}
+		}
+
+		if (asc->quirks & APPLE_NUMLOCK_EMULATION &&
+				(test_bit(usage->code, asc->pressed_numlock) ||
+				test_bit(LED_NUML, input->led))) {
+			trans = apple_find_translation(powerbook_numlock_keys,
+					usage->code);
+
+			if (trans) {
+				if (value)
+					set_bit(usage->code,
+							asc->pressed_numlock);
+				else
+					clear_bit(usage->code,
+							asc->pressed_numlock);
+
+				input_event(input, usage->type, trans->to,
+						value);
+			}
+
+			return 1;
+		}
+	}
+
+	if (asc->quirks & APPLE_ISO_KEYBOARD) {
+		trans = apple_find_translation(apple_iso_keyboard, usage->code);
+		if (trans) {
+			input_event(input, usage->type, trans->to, value);
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+static int apple_event(struct hid_device *hdev, struct hid_field *field,
+		struct hid_usage *usage, __s32 value)
+{
+	struct apple_sc *asc = hid_get_drvdata(hdev);
+
+	if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
+			!usage->type)
+		return 0;
+
+	if ((asc->quirks & APPLE_INVERT_HWHEEL) &&
+			usage->code == REL_HWHEEL) {
+		input_event(field->hidinput->input, usage->type, usage->code,
+				-value);
+		return 1;
+	}
+
+	if ((asc->quirks & APPLE_HAS_FN) &&
+			hidinput_apple_event(hdev, field->hidinput->input,
+				usage, value))
+		return 1;
+
+
+	return 0;
+}
+
+/*
+ * MacBook JIS keyboard has wrong logical maximum
+ */
+static void apple_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+		unsigned int rsize)
+{
+	struct apple_sc *asc = hid_get_drvdata(hdev);
+
+	if ((asc->quirks & APPLE_RDESC_JIS) && rsize >= 60 &&
+			rdesc[53] == 0x65 && rdesc[59] == 0x65) {
+		dev_info(&hdev->dev, "fixing up MacBook JIS keyboard report "
+				"descriptor\n");
+		rdesc[53] = rdesc[59] = 0xe7;
+	}
+}
+
+static void apple_setup_input(struct input_dev *input)
+{
+	struct apple_key_translation *trans;
+
+	set_bit(KEY_NUMLOCK, input->keybit);
+
+	/* Enable all needed keys */
+	for (trans = apple_fn_keys; trans->from; trans++)
+		set_bit(trans->to, input->keybit);
+
+	for (trans = powerbook_fn_keys; trans->from; trans++)
+		set_bit(trans->to, input->keybit);
+
+	for (trans = powerbook_numlock_keys; trans->from; trans++)
+		set_bit(trans->to, input->keybit);
+
+	for (trans = apple_iso_keyboard; trans->from; trans++)
+		set_bit(trans->to, input->keybit);
+}
+
+static int apple_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_UP_CUSTOM | 0x0003)) {
+		/* The fn key on Apple USB keyboards */
+		set_bit(EV_REP, hi->input->evbit);
+		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_FN);
+		apple_setup_input(hi->input);
+		return 1;
+	}
+
+	/* we want the hid layer to go through standard path (set and ignore) */
+	return 0;
+}
+
+static int apple_input_mapped(struct hid_device *hdev, struct hid_input *hi,
+		struct hid_field *field, struct hid_usage *usage,
+		unsigned long **bit, int *max)
+{
+	struct apple_sc *asc = hid_get_drvdata(hdev);
+
+	if (asc->quirks & APPLE_MIGHTYMOUSE) {
+		if (usage->hid == HID_GD_Z)
+			hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
+		else if (usage->code == BTN_1)
+			hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_2);
+		else if (usage->code == BTN_2)
+			hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_1);
+	}
+
+	return 0;
+}
+
+static int apple_probe(struct hid_device *hdev,
+		const struct hid_device_id *id)
+{
+	unsigned long quirks = id->driver_data;
+	struct apple_sc *asc;
+	int ret;
+
+	/* return something else or move to hid layer? device will reside
+	   allocated */
+	if (id->bus == BUS_USB && (quirks & APPLE_IGNORE_MOUSE) &&
+			to_usb_interface(hdev->dev.parent)->cur_altsetting->
+			desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
+		return -ENODEV;
+
+	asc = kzalloc(sizeof(*asc), GFP_KERNEL);
+	if (asc == NULL) {
+		dev_err(&hdev->dev, "can't alloc apple descriptor\n");
+		return -ENOMEM;
+	}
+
+	asc->quirks = quirks;
+
+	hid_set_drvdata(hdev, asc);
+
+	if (quirks & APPLE_HIDDEV)
+		hdev->quirks |= HID_QUIRK_HIDDEV;
+	if (quirks & APPLE_IGNORE_HIDINPUT)
+		hdev->quirks |= HID_QUIRK_IGNORE_HIDINPUT;
+
+	ret = hid_parse(hdev);
+	if (ret) {
+		dev_err(&hdev->dev, "parse failed\n");
+		goto err_free;
+	}
+
+	ret = hid_hw_start(hdev);
+	if (ret) {
+		dev_err(&hdev->dev, "hw start failed\n");
+		goto err_free;
+	}
+
+	return 0;
+err_free:
+	kfree(asc);
+	return ret;
+}
+
+static void apple_remove(struct hid_device *hdev)
+{
+	hid_hw_stop(hdev);
+	kfree(hid_get_drvdata(hdev));
+}
+
+static const struct hid_device_id apple_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4),
+		.driver_data = APPLE_HIDDEV | APPLE_IGNORE_HIDINPUT },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE),
+		.driver_data = APPLE_MIGHTYMOUSE | APPLE_INVERT_HWHEEL },
+
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE | APPLE_ISO_KEYBOARD },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE | APPLE_ISO_KEYBOARD },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE | APPLE_ISO_KEYBOARD },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE | APPLE_RDESC_JIS},
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI),
+		.driver_data = APPLE_HAS_FN },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO),
+		.driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS),
+		.driver_data = APPLE_HAS_FN },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_ISO_KEYBOARD },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI),
+		.driver_data = APPLE_HAS_FN | APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO),
+		.driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS),
+		.driver_data = APPLE_HAS_FN | APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI),
+		.driver_data = APPLE_HAS_FN | APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO),
+		.driver_data = APPLE_HAS_FN | APPLE_ISO_KEYBOARD |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS),
+		.driver_data = APPLE_HAS_FN | APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY),
+		.driver_data = APPLE_NUMLOCK_EMULATION | APPLE_HAS_FN |
+			APPLE_IGNORE_MOUSE },
+
+	/* Apple wireless Mighty Mouse */
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 0x030c),
+		.driver_data = APPLE_MIGHTYMOUSE | APPLE_INVERT_HWHEEL },
+
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, apple_devices);
+
+static struct hid_driver apple_driver = {
+	.name = "apple",
+	.id_table = apple_devices,
+	.report_fixup = apple_report_fixup,
+	.probe = apple_probe,
+	.remove = apple_remove,
+	.event = apple_event,
+	.input_mapping = apple_input_mapping,
+	.input_mapped = apple_input_mapped,
+};
+
+static int apple_init(void)
+{
+	int ret;
+
+	ret = hid_register_driver(&apple_driver);
+	if (ret)
+		printk(KERN_ERR "can't register apple driver\n");
+
+	return ret;
+}
+
+static void apple_exit(void)
+{
+	hid_unregister_driver(&apple_driver);
+}
+
+module_init(apple_init);
+module_exit(apple_exit);
+MODULE_LICENSE("GPL");