drivers/hid/hid-samsung.c - kernel/msm-4.19 - Gitiles

 /*
  *  HID driver for some samsung "special" devices
  *
  *  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
  *  Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
  *
  *
  *  This driver supports several HID devices:
  *
  *  [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse).
  *	various hid report fixups for different variants.
  *
  *  [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo
  *	several key mappings used from the consumer usage page
  *	deviate from the USB HUT 1.12 standard.
  *
  */

 /*
  * 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/usb.h>
 #include <linux/hid.h>
 #include <linux/module.h>

 #include "hid-ids.h"

 /*
  * There are several variants for 0419:0001:
  *
  * 1. 184 byte report descriptor
  * Vendor specific report #4 has a size of 48 bit,
  * and therefore is not accepted when inspecting the descriptors.
  * As a workaround we reinterpret the report as:
  *   Variable type, count 6, size 8 bit, log. maximum 255
  * The burden to reconstruct the data is moved into user space.
  *
  * 2. 203 byte report descriptor
  * Report #4 has an array field with logical range 0..18 instead of 1..15.
  *
  * 3. 135 byte report descriptor
  * Report #4 has an array field with logical range 0..17 instead of 1..14.
  *
  * 4. 171 byte report descriptor
  * Report #3 has an array field with logical range 0..1 instead of 1..3.
  */
 static inline void samsung_irda_dev_trace(struct hid_device *hdev,
 		unsigned int rsize)
 {
 	dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
 			"descriptor\n", rsize);
 }

 static void samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		unsigned int rsize)
 {
 	if (rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
 			rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
 			rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
 			rdesc[182] == 0x40) {
 		samsung_irda_dev_trace(hdev, 184);
 		rdesc[176] = 0xff;
 		rdesc[178] = 0x08;
 		rdesc[180] = 0x06;
 		rdesc[182] = 0x42;
 	} else
 	if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
 			rdesc[194] == 0x25 && rdesc[195] == 0x12) {
 		samsung_irda_dev_trace(hdev, 203);
 		rdesc[193] = 0x1;
 		rdesc[195] = 0xf;
 	} else
 	if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
 			rdesc[126] == 0x25 && rdesc[127] == 0x11) {
 		samsung_irda_dev_trace(hdev, 135);
 		rdesc[125] = 0x1;
 		rdesc[127] = 0xe;
 	} else
 	if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
 			rdesc[162] == 0x25 && rdesc[163] == 0x01) {
 		samsung_irda_dev_trace(hdev, 171);
 		rdesc[161] = 0x1;
 		rdesc[163] = 0x3;
 	}
 }

 #define samsung_kbd_mouse_map_key_clear(c) \
 	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))

 static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev,
 	struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {
 	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
 	unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;

 	if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE))
 		return 0;

 	dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n",
 		usage->hid & HID_USAGE);

 	switch (usage->hid & HID_USAGE) {
 	/* report 2 */
 	case 0x0b5: samsung_kbd_mouse_map_key_clear(KEY_NEXTSONG); break;
 	case 0x0b6: samsung_kbd_mouse_map_key_clear(KEY_PREVIOUSSONG); break;
 	case 0x0b7: samsung_kbd_mouse_map_key_clear(KEY_STOPCD); break;
 	case 0x0cd: samsung_kbd_mouse_map_key_clear(KEY_PLAYPAUSE); break;
 	case 0x0e2: samsung_kbd_mouse_map_key_clear(KEY_MUTE); break;
 	case 0x0e9: samsung_kbd_mouse_map_key_clear(KEY_VOLUMEUP); break;
 	case 0x0ea: samsung_kbd_mouse_map_key_clear(KEY_VOLUMEDOWN); break;
 	case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break;
 	case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL);	break;
 	case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break;
 	case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break;
 	case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break;
 	case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break;
 	case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break;
 	case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break;
 	case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break;
 	case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break;
 	case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break;
 	default:
 		return 0;
 	}

 	return 1;
 }

 static void samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 	unsigned int rsize)
 {
 	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product)
 		samsung_irda_report_fixup(hdev, rdesc, rsize);
 }

 static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 	struct hid_field *field, struct hid_usage *usage,
 	unsigned long **bit, int *max)
 {
 	int ret = 0;

 	if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product)
 		ret = samsung_kbd_mouse_input_mapping(hdev,
 			hi, field, usage, bit, max);

 	return ret;
 }

 static int samsung_probe(struct hid_device *hdev,
 		const struct hid_device_id *id)
 {
 	int ret;
 	unsigned int cmask = HID_CONNECT_DEFAULT;

 	ret = hid_parse(hdev);
 	if (ret) {
 		dev_err(&hdev->dev, "parse failed\n");
 		goto err_free;
 	}

 	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) {
 		if (hdev->rsize == 184) {
 			/* disable hidinput, force hiddev */
 			cmask = (cmask & ~HID_CONNECT_HIDINPUT) |
 				HID_CONNECT_HIDDEV_FORCE;
 		}
 	}

 	ret = hid_hw_start(hdev, cmask);
 	if (ret) {
 		dev_err(&hdev->dev, "hw start failed\n");
 		goto err_free;
 	}

 	return 0;
 err_free:
 	return ret;
 }

 static const struct hid_device_id samsung_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, samsung_devices);

 static struct hid_driver samsung_driver = {
 	.name = "samsung",
 	.id_table = samsung_devices,
 	.report_fixup = samsung_report_fixup,
 	.input_mapping = samsung_input_mapping,
 	.probe = samsung_probe,
 };

 static int __init samsung_init(void)
 {
 	return hid_register_driver(&samsung_driver);
 }

 static void __exit samsung_exit(void)
 {
 	hid_unregister_driver(&samsung_driver);
 }

 module_init(samsung_init);
 module_exit(samsung_exit);
 MODULE_LICENSE("GPL");
	/*
	* HID driver for some samsung "special" devices
	*
	* 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
	* Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
	*
	*
	* This driver supports several HID devices:
	*
	* [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse).
	* various hid report fixups for different variants.
	*
	* [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo
	* several key mappings used from the consumer usage page
	* deviate from the USB HUT 1.12 standard.
	*
	*/

	/*
	* 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/usb.h>
	#include <linux/hid.h>
	#include <linux/module.h>

	#include "hid-ids.h"

	/*
	* There are several variants for 0419:0001:
	*
	* 1. 184 byte report descriptor
	* Vendor specific report #4 has a size of 48 bit,
	* and therefore is not accepted when inspecting the descriptors.
	* As a workaround we reinterpret the report as:
	* Variable type, count 6, size 8 bit, log. maximum 255
	* The burden to reconstruct the data is moved into user space.
	*
	* 2. 203 byte report descriptor
	* Report #4 has an array field with logical range 0..18 instead of 1..15.
	*
	* 3. 135 byte report descriptor
	* Report #4 has an array field with logical range 0..17 instead of 1..14.
	*
	* 4. 171 byte report descriptor
	* Report #3 has an array field with logical range 0..1 instead of 1..3.
	*/
	static inline void samsung_irda_dev_trace(struct hid_device *hdev,
	unsigned int rsize)
	{
	dev_info(&hdev->dev, "fixing up Samsung IrDA %d byte report "
	"descriptor\n", rsize);
	}

	static void samsung_irda_report_fixup(struct hid_device hdev, __u8 rdesc,
	unsigned int rsize)
	{
	if (rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
	rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
	rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
	rdesc[182] == 0x40) {
	samsung_irda_dev_trace(hdev, 184);
	rdesc[176] = 0xff;
	rdesc[178] = 0x08;
	rdesc[180] = 0x06;
	rdesc[182] = 0x42;
	} else
	if (rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
	rdesc[194] == 0x25 && rdesc[195] == 0x12) {
	samsung_irda_dev_trace(hdev, 203);
	rdesc[193] = 0x1;
	rdesc[195] = 0xf;
	} else
	if (rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
	rdesc[126] == 0x25 && rdesc[127] == 0x11) {
	samsung_irda_dev_trace(hdev, 135);
	rdesc[125] = 0x1;
	rdesc[127] = 0xe;
	} else
	if (rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
	rdesc[162] == 0x25 && rdesc[163] == 0x01) {
	samsung_irda_dev_trace(hdev, 171);
	rdesc[161] = 0x1;
	rdesc[163] = 0x3;
	}
	}

	#define samsung_kbd_mouse_map_key_clear(c) \
	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))

	static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev,
	struct hid_input hi, struct hid_field field, struct hid_usage *usage,
	unsigned long *bit, int max)
	{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;

	if (1 != ifnum \|\| HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE))
	return 0;

	dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n",
	usage->hid & HID_USAGE);

	switch (usage->hid & HID_USAGE) {
	/* report 2 */
	case 0x0b5: samsung_kbd_mouse_map_key_clear(KEY_NEXTSONG); break;
	case 0x0b6: samsung_kbd_mouse_map_key_clear(KEY_PREVIOUSSONG); break;
	case 0x0b7: samsung_kbd_mouse_map_key_clear(KEY_STOPCD); break;
	case 0x0cd: samsung_kbd_mouse_map_key_clear(KEY_PLAYPAUSE); break;
	case 0x0e2: samsung_kbd_mouse_map_key_clear(KEY_MUTE); break;
	case 0x0e9: samsung_kbd_mouse_map_key_clear(KEY_VOLUMEUP); break;
	case 0x0ea: samsung_kbd_mouse_map_key_clear(KEY_VOLUMEDOWN); break;
	case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break;
	case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL); break;
	case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break;
	case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break;
	case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break;
	case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break;
	case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break;
	case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break;
	case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break;
	case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break;
	case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break;
	default:
	return 0;
	}

	return 1;
	}

	static void samsung_report_fixup(struct hid_device hdev, __u8 rdesc,
	unsigned int rsize)
	{
	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product)
	samsung_irda_report_fixup(hdev, rdesc, rsize);
	}

	static int samsung_input_mapping(struct hid_device hdev, struct hid_input hi,
	struct hid_field field, struct hid_usage usage,
	unsigned long *bit, int max)
	{
	int ret = 0;

	if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product)
	ret = samsung_kbd_mouse_input_mapping(hdev,
	hi, field, usage, bit, max);

	return ret;
	}

	static int samsung_probe(struct hid_device *hdev,
	const struct hid_device_id *id)
	{
	int ret;
	unsigned int cmask = HID_CONNECT_DEFAULT;

	ret = hid_parse(hdev);
	if (ret) {
	dev_err(&hdev->dev, "parse failed\n");
	goto err_free;
	}

	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) {
	if (hdev->rsize == 184) {
	/* disable hidinput, force hiddev */
	cmask = (cmask & ~HID_CONNECT_HIDINPUT) \|
	HID_CONNECT_HIDDEV_FORCE;
	}
	}

	ret = hid_hw_start(hdev, cmask);
	if (ret) {
	dev_err(&hdev->dev, "hw start failed\n");
	goto err_free;
	}

	return 0;
	err_free:
	return ret;
	}

	static const struct hid_device_id samsung_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
	{ }
	};
	MODULE_DEVICE_TABLE(hid, samsung_devices);

	static struct hid_driver samsung_driver = {
	.name = "samsung",
	.id_table = samsung_devices,
	.report_fixup = samsung_report_fixup,
	.input_mapping = samsung_input_mapping,
	.probe = samsung_probe,
	};

	static int __init samsung_init(void)
	{
	return hid_register_driver(&samsung_driver);
	}

	static void __exit samsung_exit(void)
	{
	hid_unregister_driver(&samsung_driver);
	}

	module_init(samsung_init);
	module_exit(samsung_exit);
	MODULE_LICENSE("GPL");