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

/*
*  HID driver for zydacron remote control
*
*  Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
*/

/*
* 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 "hid-ids.h"

struct zc_device {
	struct input_dev	*input_ep81;
	unsigned short		last_key[4];
};


/*
* Zydacron remote control has an invalid HID report descriptor,
* that needs fixing before we can parse it.
*/
static __u8 *zc_report_fixup(struct hid_device *hdev, __u8 *rdesc,
	unsigned int *rsize)
{
	if (*rsize >= 253 &&
		rdesc[0x96] == 0xbc && rdesc[0x97] == 0xff &&
		rdesc[0xca] == 0xbc && rdesc[0xcb] == 0xff &&
		rdesc[0xe1] == 0xbc && rdesc[0xe2] == 0xff) {
			hid_info(hdev,
				"fixing up zydacron remote control report descriptor\n");
			rdesc[0x96] = rdesc[0xca] = rdesc[0xe1] = 0x0c;
			rdesc[0x97] = rdesc[0xcb] = rdesc[0xe2] = 0x00;
		}
	return rdesc;
}

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

static int zc_input_mapping(struct hid_device *hdev, struct hid_input *hi,
	struct hid_field *field, struct hid_usage *usage,
	unsigned long **bit, int *max)
{
	int i;
	struct zc_device *zc = hid_get_drvdata(hdev);
	zc->input_ep81 = hi->input;

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

	dbg_hid("zynacron input mapping event [0x%x]\n",
		usage->hid & HID_USAGE);

	switch (usage->hid & HID_USAGE) {
	/* report 2 */
	case 0x10:
		zc_map_key_clear(KEY_MODE);
		break;
	case 0x30:
		zc_map_key_clear(KEY_SCREEN);
		break;
	case 0x70:
		zc_map_key_clear(KEY_INFO);
		break;
	/* report 3 */
	case 0x04:
		zc_map_key_clear(KEY_RADIO);
		break;
	/* report 4 */
	case 0x0d:
		zc_map_key_clear(KEY_PVR);
		break;
	case 0x25:
		zc_map_key_clear(KEY_TV);
		break;
	case 0x47:
		zc_map_key_clear(KEY_AUDIO);
		break;
	case 0x49:
		zc_map_key_clear(KEY_AUX);
		break;
	case 0x4a:
		zc_map_key_clear(KEY_VIDEO);
		break;
	case 0x48:
		zc_map_key_clear(KEY_DVD);
		break;
	case 0x24:
		zc_map_key_clear(KEY_MENU);
		break;
	case 0x32:
		zc_map_key_clear(KEY_TEXT);
		break;
	default:
		return 0;
	}

	for (i = 0; i < 4; i++)
		zc->last_key[i] = 0;

	return 1;
}

static int zc_raw_event(struct hid_device *hdev, struct hid_report *report,
	 u8 *data, int size)
{
	struct zc_device *zc = hid_get_drvdata(hdev);
	int ret = 0;
	unsigned key;
	unsigned short index;

	if (report->id == data[0]) {

		/* break keys */
		for (index = 0; index < 4; index++) {
			key = zc->last_key[index];
			if (key) {
				input_event(zc->input_ep81, EV_KEY, key, 0);
				zc->last_key[index] = 0;
			}
		}

		key = 0;
		switch (report->id) {
		case 0x02:
		case 0x03:
			switch (data[1]) {
			case 0x10:
				key = KEY_MODE;
				index = 0;
				break;
			case 0x30:
				key = KEY_SCREEN;
				index = 1;
				break;
			case 0x70:
				key = KEY_INFO;
				index = 2;
				break;
			case 0x04:
				key = KEY_RADIO;
				index = 3;
				break;
			}

			if (key) {
				input_event(zc->input_ep81, EV_KEY, key, 1);
				zc->last_key[index] = key;
			}

			ret = 1;
			break;
		}
	}

	return ret;
}

static int zc_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int ret;
	struct zc_device *zc;

	zc = devm_kzalloc(&hdev->dev, sizeof(*zc), GFP_KERNEL);
	if (zc == NULL) {
		hid_err(hdev, "can't alloc descriptor\n");
		return -ENOMEM;
	}

	hid_set_drvdata(hdev, zc);

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

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
		hid_err(hdev, "hw start failed\n");
		return ret;
	}

	return 0;
}

static const struct hid_device_id zc_devices[] = {
	{ HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
	{ }
};
MODULE_DEVICE_TABLE(hid, zc_devices);

static struct hid_driver zc_driver = {
	.name = "zydacron",
	.id_table = zc_devices,
	.report_fixup = zc_report_fixup,
	.input_mapping = zc_input_mapping,
	.raw_event = zc_raw_event,
	.probe = zc_probe,
};
module_hid_driver(zc_driver);

MODULE_LICENSE("GPL");
Commit	Line	Data
d0742aba JK	1	/*
	2	* HID driver for zydacron remote control
	3	*
	4	* Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
	5	*/
	6
	7	/*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the Free
	10	* Software Foundation; either version 2 of the License, or (at your option)
	11	* any later version.
	12	*/
	13
	14	#include <linux/device.h>
	15	#include <linux/hid.h>
	16	#include <linux/module.h>
	17
	18	#include "hid-ids.h"
	19
	20	struct zc_device {
	21	struct input_dev *input_ep81;
	22	unsigned short last_key[4];
	23	};
	24
	25
	26	/*
	27	* Zydacron remote control has an invalid HID report descriptor,
	28	* that needs fixing before we can parse it.
	29	*/
73e4008d NK	30	static __u8 zc_report_fixup(struct hid_device hdev, __u8 *rdesc,
73e4008d NK	31	unsigned int *rsize)
d0742aba	32	{
73e4008d	33	if (*rsize >= 253 &&
d0742aba JK	34	rdesc[0x96] == 0xbc && rdesc[0x97] == 0xff &&
	35	rdesc[0xca] == 0xbc && rdesc[0xcb] == 0xff &&
	36	rdesc[0xe1] == 0xbc && rdesc[0xe2] == 0xff) {
4291ee30 JP	37	hid_info(hdev,
4291ee30 JP	38	"fixing up zydacron remote control report descriptor\n");
d0742aba JK	39	rdesc[0x96] = rdesc[0xca] = rdesc[0xe1] = 0x0c;
	40	rdesc[0x97] = rdesc[0xcb] = rdesc[0xe2] = 0x00;
	41	}
73e4008d	42	return rdesc;
d0742aba JK	43	}
	44
	45	#define zc_map_key_clear(c) \
	46	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
	47
	48	static int zc_input_mapping(struct hid_device hdev, struct hid_input hi,
	49	struct hid_field field, struct hid_usage usage,
	50	unsigned long *bit, int max)
	51	{
	52	int i;
	53	struct zc_device *zc = hid_get_drvdata(hdev);
	54	zc->input_ep81 = hi->input;
	55
	56	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
	57	return 0;
	58
	59	dbg_hid("zynacron input mapping event [0x%x]\n",
	60	usage->hid & HID_USAGE);
	61
	62	switch (usage->hid & HID_USAGE) {
	63	/* report 2 */
	64	case 0x10:
	65	zc_map_key_clear(KEY_MODE);
	66	break;
	67	case 0x30:
	68	zc_map_key_clear(KEY_SCREEN);
	69	break;
	70	case 0x70:
	71	zc_map_key_clear(KEY_INFO);
	72	break;
	73	/* report 3 */
	74	case 0x04:
	75	zc_map_key_clear(KEY_RADIO);
	76	break;
	77	/* report 4 */
	78	case 0x0d:
	79	zc_map_key_clear(KEY_PVR);
	80	break;
	81	case 0x25:
	82	zc_map_key_clear(KEY_TV);
	83	break;
	84	case 0x47:
	85	zc_map_key_clear(KEY_AUDIO);
	86	break;
	87	case 0x49:
	88	zc_map_key_clear(KEY_AUX);
	89	break;
	90	case 0x4a:
	91	zc_map_key_clear(KEY_VIDEO);
	92	break;
	93	case 0x48:
	94	zc_map_key_clear(KEY_DVD);
	95	break;
	96	case 0x24:
	97	zc_map_key_clear(KEY_MENU);
	98	break;
	99	case 0x32:
	100	zc_map_key_clear(KEY_TEXT);
	101	break;
	102	default:
	103	return 0;
	104	}
	105
	106	for (i = 0; i < 4; i++)
107	zc->last_key[i] = 0;
108
109	return 1;
110	}
111
112	static int zc_raw_event(struct hid_device hdev, struct hid_report report,
113	u8 *data, int size)
114	{
115	struct zc_device *zc = hid_get_drvdata(hdev);
116	int ret = 0;
117	unsigned key;
118	unsigned short index;
119
120	if (report->id == data[0]) {
121
122	/* break keys */
123	for (index = 0; index < 4; index++) {
124	key = zc->last_key[index];
125	if (key) {
126	input_event(zc->input_ep81, EV_KEY, key, 0);
127	zc->last_key[index] = 0;
128	}
129	}
130
131	key = 0;
132	switch (report->id) {
133	case 0x02:
134	case 0x03:
135	switch (data[1]) {
136	case 0x10:
137	key = KEY_MODE;
138	index = 0;
139	break;
140	case 0x30:
141	key = KEY_SCREEN;
142	index = 1;
143	break;
144	case 0x70:
145	key = KEY_INFO;
146	index = 2;
147	break;
148	case 0x04:
149	key = KEY_RADIO;
150	index = 3;
151	break;
152	}
153
154	if (key) {
155	input_event(zc->input_ep81, EV_KEY, key, 1);
156	zc->last_key[index] = key;
157	}
158
159	ret = 1;
160	break;
161	}
162	}
163
164	return ret;
165	}
166
167	static int zc_probe(struct hid_device hdev, const struct hid_device_id id)
168	{
169	int ret;
170	struct zc_device *zc;
171
abf832bf	172	zc = devm_kzalloc(&hdev->dev, sizeof(*zc), GFP_KERNEL);
d0742aba	173	if (zc == NULL) {
4291ee30	174	hid_err(hdev, "can't alloc descriptor\n");
d0742aba JK	175	return -ENOMEM;
	176	}
	177
	178	hid_set_drvdata(hdev, zc);
	179
	180	ret = hid_parse(hdev);
	181	if (ret) {
4291ee30	182	hid_err(hdev, "parse failed\n");
abf832bf	183	return ret;
d0742aba JK	184	}
	185
	186	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	187	if (ret) {
4291ee30	188	hid_err(hdev, "hw start failed\n");
abf832bf	189	return ret;
d0742aba JK	190	}
	191
	192	return 0;
d0742aba JK	193	}
	194
	195	static const struct hid_device_id zc_devices[] = {
	196	{ HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
	197	{ }
	198	};
	199	MODULE_DEVICE_TABLE(hid, zc_devices);
	200
	201	static struct hid_driver zc_driver = {
	202	.name = "zydacron",
	203	.id_table = zc_devices,
	204	.report_fixup = zc_report_fixup,
	205	.input_mapping = zc_input_mapping,
	206	.raw_event = zc_raw_event,
	207	.probe = zc_probe,
d0742aba	208	};
f425458e	209	module_hid_driver(zc_driver);
d0742aba	210
d0742aba	211	MODULE_LICENSE("GPL");