[mirror_ubuntu-artful-kernel.git] / drivers / hid / hid-plantronics.c

/*
 *  Plantronics USB HID Driver
 *
 *  Copyright (c) 2014 JD Cole <jd.cole@plantronics.com>
 *  Copyright (c) 2015 Terry Junge <terry.junge@plantronics.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 "hid-ids.h"

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

#define PLT_HID_1_0_PAGE	0xffa00000
#define PLT_HID_2_0_PAGE	0xffa20000

#define PLT_BASIC_TELEPHONY	0x0003
#define PLT_BASIC_EXCEPTION	0x0005

#define PLT_VOL_UP		0x00b1
#define PLT_VOL_DOWN		0x00b2

#define PLT1_VOL_UP		(PLT_HID_1_0_PAGE | PLT_VOL_UP)
#define PLT1_VOL_DOWN		(PLT_HID_1_0_PAGE | PLT_VOL_DOWN)
#define PLT2_VOL_UP		(PLT_HID_2_0_PAGE | PLT_VOL_UP)
#define PLT2_VOL_DOWN		(PLT_HID_2_0_PAGE | PLT_VOL_DOWN)

#define PLT_DA60		0xda60
#define PLT_BT300_MIN		0x0413
#define PLT_BT300_MAX		0x0418


#define PLT_ALLOW_CONSUMER (field->application == HID_CP_CONSUMERCONTROL && \
			    (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER)

static int plantronics_input_mapping(struct hid_device *hdev,
				     struct hid_input *hi,
				     struct hid_field *field,
				     struct hid_usage *usage,
				     unsigned long **bit, int *max)
{
	unsigned short mapped_key;
	unsigned long plt_type = (unsigned long)hid_get_drvdata(hdev);

	/* handle volume up/down mapping */
	/* non-standard types or multi-HID interfaces - plt_type is PID */
	if (!(plt_type & HID_USAGE_PAGE)) {
		switch (plt_type) {
		case PLT_DA60:
			if (PLT_ALLOW_CONSUMER)
				goto defaulted;
			goto ignored;
		default:
			if (PLT_ALLOW_CONSUMER)
				goto defaulted;
		}
	}
	/* handle standard types - plt_type is 0xffa0uuuu or 0xffa2uuuu */
	/* 'basic telephony compliant' - allow default consumer page map */
	else if ((plt_type & HID_USAGE) >= PLT_BASIC_TELEPHONY &&
		 (plt_type & HID_USAGE) != PLT_BASIC_EXCEPTION) {
		if (PLT_ALLOW_CONSUMER)
			goto defaulted;
	}
	/* not 'basic telephony' - apply legacy mapping */
	/* only map if the field is in the device's primary vendor page */
	else if (!((field->application ^ plt_type) & HID_USAGE_PAGE)) {
		switch (usage->hid) {
		case PLT1_VOL_UP:
		case PLT2_VOL_UP:
			mapped_key = KEY_VOLUMEUP;
			goto mapped;
		case PLT1_VOL_DOWN:
		case PLT2_VOL_DOWN:
			mapped_key = KEY_VOLUMEDOWN;
			goto mapped;
		}
	}

/*
 * Future mapping of call control or other usages,
 * if and when keys are defined would go here
 * otherwise, ignore everything else that was not mapped
 */

ignored:
	return -1;

defaulted:
	hid_dbg(hdev, "usage: %08x (appl: %08x) - defaulted\n",
		usage->hid, field->application);
	return 0;

mapped:
	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, mapped_key);
	hid_dbg(hdev, "usage: %08x (appl: %08x) - mapped to key %d\n",
		usage->hid, field->application, mapped_key);
	return 1;
}

static unsigned long plantronics_device_type(struct hid_device *hdev)
{
	unsigned i, col_page;
	unsigned long plt_type = hdev->product;

	/* multi-HID interfaces? - plt_type is PID */
	if (plt_type >= PLT_BT300_MIN && plt_type <= PLT_BT300_MAX)
		goto exit;

	/* determine primary vendor page */
	for (i = 0; i < hdev->maxcollection; i++) {
		col_page = hdev->collection[i].usage & HID_USAGE_PAGE;
		if (col_page == PLT_HID_2_0_PAGE) {
			plt_type = hdev->collection[i].usage;
			break;
		}
		if (col_page == PLT_HID_1_0_PAGE)
			plt_type = hdev->collection[i].usage;
	}

exit:
	hid_dbg(hdev, "plt_type decoded as: %08lx\n", plt_type);
	return plt_type;
}

static int plantronics_probe(struct hid_device *hdev,
			     const struct hid_device_id *id)
{
	int ret;

	ret = hid_parse(hdev);
	if (ret) {
		hid_err(hdev, "parse failed\n");
		goto err;
	}

	hid_set_drvdata(hdev, (void *)plantronics_device_type(hdev));

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
		HID_CONNECT_HIDINPUT_FORCE | HID_CONNECT_HIDDEV_FORCE);
	if (ret)
		hid_err(hdev, "hw start failed\n");

err:
	return ret;
}

static const struct hid_device_id plantronics_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
	{ }
};
MODULE_DEVICE_TABLE(hid, plantronics_devices);

static struct hid_driver plantronics_driver = {
	.name = "plantronics",
	.id_table = plantronics_devices,
	.input_mapping = plantronics_input_mapping,
	.probe = plantronics_probe,
};
module_hid_driver(plantronics_driver);

MODULE_AUTHOR("JD Cole <jd.cole@plantronics.com>");
MODULE_AUTHOR("Terry Junge <terry.junge@plantronics.com>");
MODULE_DESCRIPTION("Plantronics USB HID Driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
1a3f83f6 JC	1	/*
	2	* Plantronics USB HID Driver
	3	*
	4	* Copyright (c) 2014 JD Cole <jd.cole@plantronics.com>
81bb773f	5	* Copyright (c) 2015 Terry Junge <terry.junge@plantronics.com>
1a3f83f6 JC	6	*/
	7
	8	/*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the Free
	11	* Software Foundation; either version 2 of the License, or (at your option)
	12	* any later version.
	13	*/
	14
	15	#include "hid-ids.h"
	16
	17	#include <linux/hid.h>
	18	#include <linux/module.h>
	19
81bb773f TJ	20	#define PLT_HID_1_0_PAGE 0xffa00000
	21	#define PLT_HID_2_0_PAGE 0xffa20000
	22
	23	#define PLT_BASIC_TELEPHONY 0x0003
	24	#define PLT_BASIC_EXCEPTION 0x0005
	25
	26	#define PLT_VOL_UP 0x00b1
	27	#define PLT_VOL_DOWN 0x00b2
	28
	29	#define PLT1_VOL_UP (PLT_HID_1_0_PAGE \| PLT_VOL_UP)
	30	#define PLT1_VOL_DOWN (PLT_HID_1_0_PAGE \| PLT_VOL_DOWN)
	31	#define PLT2_VOL_UP (PLT_HID_2_0_PAGE \| PLT_VOL_UP)
	32	#define PLT2_VOL_DOWN (PLT_HID_2_0_PAGE \| PLT_VOL_DOWN)
	33
	34	#define PLT_DA60 0xda60
	35	#define PLT_BT300_MIN 0x0413
	36	#define PLT_BT300_MAX 0x0418
	37
	38
	39	#define PLT_ALLOW_CONSUMER (field->application == HID_CP_CONSUMERCONTROL && \
	40	(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER)
	41
1a3f83f6 JC	42	static int plantronics_input_mapping(struct hid_device *hdev,
	43	struct hid_input *hi,
	44	struct hid_field *field,
	45	struct hid_usage *usage,
	46	unsigned long *bit, int max)
	47	{
81bb773f TJ	48	unsigned short mapped_key;
	49	unsigned long plt_type = (unsigned long)hid_get_drvdata(hdev);
	50
	51	/* handle volume up/down mapping */
	52	/* non-standard types or multi-HID interfaces - plt_type is PID */
	53	if (!(plt_type & HID_USAGE_PAGE)) {
	54	switch (plt_type) {
	55	case PLT_DA60:
	56	if (PLT_ALLOW_CONSUMER)
	57	goto defaulted;
	58	goto ignored;
	59	default:
	60	if (PLT_ALLOW_CONSUMER)
	61	goto defaulted;
	62	}
	63	}
	64	/* handle standard types - plt_type is 0xffa0uuuu or 0xffa2uuuu */
	65	/* 'basic telephony compliant' - allow default consumer page map */
	66	else if ((plt_type & HID_USAGE) >= PLT_BASIC_TELEPHONY &&
	67	(plt_type & HID_USAGE) != PLT_BASIC_EXCEPTION) {
	68	if (PLT_ALLOW_CONSUMER)
	69	goto defaulted;
	70	}
	71	/* not 'basic telephony' - apply legacy mapping */
	72	/* only map if the field is in the device's primary vendor page */
	73	else if (!((field->application ^ plt_type) & HID_USAGE_PAGE)) {
	74	switch (usage->hid) {
	75	case PLT1_VOL_UP:
	76	case PLT2_VOL_UP:
	77	mapped_key = KEY_VOLUMEUP;
	78	goto mapped;
	79	case PLT1_VOL_DOWN:
	80	case PLT2_VOL_DOWN:
	81	mapped_key = KEY_VOLUMEDOWN;
	82	goto mapped;
	83	}
1a3f83f6 JC	84	}
1a3f83f6 JC	85
81bb773f TJ	86	/*
	87	* Future mapping of call control or other usages,
	88	* if and when keys are defined would go here
	89	* otherwise, ignore everything else that was not mapped
	90	*/
1a3f83f6	91
81bb773f	92	ignored:
1a3f83f6	93	return -1;
81bb773f TJ	94
	95	defaulted:
	96	hid_dbg(hdev, "usage: %08x (appl: %08x) - defaulted\n",
	97	usage->hid, field->application);
	98	return 0;
	99
	100	mapped:
	101	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, mapped_key);
	102	hid_dbg(hdev, "usage: %08x (appl: %08x) - mapped to key %d\n",
	103	usage->hid, field->application, mapped_key);
	104	return 1;
	105	}
	106
	107	static unsigned long plantronics_device_type(struct hid_device *hdev)
	108	{
	109	unsigned i, col_page;
	110	unsigned long plt_type = hdev->product;
	111
	112	/* multi-HID interfaces? - plt_type is PID */
	113	if (plt_type >= PLT_BT300_MIN && plt_type <= PLT_BT300_MAX)
	114	goto exit;
	115
	116	/* determine primary vendor page */
	117	for (i = 0; i < hdev->maxcollection; i++) {
	118	col_page = hdev->collection[i].usage & HID_USAGE_PAGE;
	119	if (col_page == PLT_HID_2_0_PAGE) {
	120	plt_type = hdev->collection[i].usage;
	121	break;
	122	}
	123	if (col_page == PLT_HID_1_0_PAGE)
	124	plt_type = hdev->collection[i].usage;
	125	}
	126
	127	exit:
	128	hid_dbg(hdev, "plt_type decoded as: %08lx\n", plt_type);
	129	return plt_type;
	130	}
	131
	132	static int plantronics_probe(struct hid_device *hdev,
	133	const struct hid_device_id *id)
	134	{
	135	int ret;
	136
	137	ret = hid_parse(hdev);
	138	if (ret) {
	139	hid_err(hdev, "parse failed\n");
	140	goto err;
	141	}
	142
	143	hid_set_drvdata(hdev, (void *)plantronics_device_type(hdev));
	144
	145	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT \|
	146	HID_CONNECT_HIDINPUT_FORCE \| HID_CONNECT_HIDDEV_FORCE);
	147	if (ret)
	148	hid_err(hdev, "hw start failed\n");
	149
	150	err:
	151	return ret;
1a3f83f6 JC	152	}
1a3f83f6 JC	153
1a3f83f6 JC	154	static const struct hid_device_id plantronics_devices[] = {
	155	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
	156	{ }
	157	};
	158	MODULE_DEVICE_TABLE(hid, plantronics_devices);
	159
	160	static struct hid_driver plantronics_driver = {
	161	.name = "plantronics",
	162	.id_table = plantronics_devices,
	163	.input_mapping = plantronics_input_mapping,
81bb773f	164	.probe = plantronics_probe,
1a3f83f6 JC	165	};
	166	module_hid_driver(plantronics_driver);
	167
	168	MODULE_AUTHOR("JD Cole <jd.cole@plantronics.com>");
	169	MODULE_AUTHOR("Terry Junge <terry.junge@plantronics.com>");
	170	MODULE_DESCRIPTION("Plantronics USB HID Driver");
	171	MODULE_LICENSE("GPL");