[net-next-2.6.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) {
			dev_info(&hdev->dev,
				"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 = kzalloc(sizeof(*zc), GFP_KERNEL);
	if (zc == NULL) {
		dev_err(&hdev->dev, "zydacron: can't alloc descriptor\n");
		return -ENOMEM;
	}

	hid_set_drvdata(hdev, zc);

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

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

	return 0;
err_free:
	kfree(zc);

	return ret;
}

static void zc_remove(struct hid_device *hdev)
{
	struct zc_device *zc = hid_get_drvdata(hdev);

	hid_hw_stop(hdev);

	if (NULL != zc)
		kfree(zc);
}

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,
	.remove = zc_remove,
};

static int __init zc_init(void)
{
	return hid_register_driver(&zc_driver);
}

static void __exit zc_exit(void)
{
	hid_unregister_driver(&zc_driver);
}

module_init(zc_init);
module_exit(zc_exit);
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) {
	37	dev_info(&hdev->dev,
	38	"fixing up zydacron remote control report "
	39	"descriptor\n");
	40	rdesc[0x96] = rdesc[0xca] = rdesc[0xe1] = 0x0c;
	41	rdesc[0x97] = rdesc[0xcb] = rdesc[0xe2] = 0x00;
	42	}
73e4008d	43	return rdesc;
d0742aba JK	44	}
	45
	46	#define zc_map_key_clear(c) \
	47	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
	48
	49	static int zc_input_mapping(struct hid_device hdev, struct hid_input hi,
	50	struct hid_field field, struct hid_usage usage,
	51	unsigned long *bit, int max)
	52	{
	53	int i;
	54	struct zc_device *zc = hid_get_drvdata(hdev);
	55	zc->input_ep81 = hi->input;
	56
	57	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
	58	return 0;
	59
	60	dbg_hid("zynacron input mapping event [0x%x]\n",
	61	usage->hid & HID_USAGE);
	62
	63	switch (usage->hid & HID_USAGE) {
	64	/* report 2 */
	65	case 0x10:
	66	zc_map_key_clear(KEY_MODE);
	67	break;
	68	case 0x30:
	69	zc_map_key_clear(KEY_SCREEN);
	70	break;
	71	case 0x70:
	72	zc_map_key_clear(KEY_INFO);
	73	break;
	74	/* report 3 */
	75	case 0x04:
	76	zc_map_key_clear(KEY_RADIO);
	77	break;
	78	/* report 4 */
	79	case 0x0d:
	80	zc_map_key_clear(KEY_PVR);
	81	break;
	82	case 0x25:
	83	zc_map_key_clear(KEY_TV);
	84	break;
	85	case 0x47:
	86	zc_map_key_clear(KEY_AUDIO);
	87	break;
	88	case 0x49:
	89	zc_map_key_clear(KEY_AUX);
	90	break;
	91	case 0x4a:
	92	zc_map_key_clear(KEY_VIDEO);
	93	break;
	94	case 0x48:
	95	zc_map_key_clear(KEY_DVD);
	96	break;
	97	case 0x24:
	98	zc_map_key_clear(KEY_MENU);
	99	break;
	100	case 0x32:
	101	zc_map_key_clear(KEY_TEXT);
	102	break;
	103	default:
	104	return 0;
	105	}
	106
	107	for (i = 0; i < 4; i++)
108	zc->last_key[i] = 0;
109
110	return 1;
111	}
112
113	static int zc_raw_event(struct hid_device hdev, struct hid_report report,
114	u8 *data, int size)
115	{
116	struct zc_device *zc = hid_get_drvdata(hdev);
117	int ret = 0;
118	unsigned key;
119	unsigned short index;
120
121	if (report->id == data[0]) {
122
123	/* break keys */
124	for (index = 0; index < 4; index++) {
125	key = zc->last_key[index];
126	if (key) {
127	input_event(zc->input_ep81, EV_KEY, key, 0);
128	zc->last_key[index] = 0;
129	}
130	}
131
132	key = 0;
133	switch (report->id) {
134	case 0x02:
135	case 0x03:
136	switch (data[1]) {
137	case 0x10:
138	key = KEY_MODE;
139	index = 0;
140	break;
141	case 0x30:
142	key = KEY_SCREEN;
143	index = 1;
144	break;
145	case 0x70:
146	key = KEY_INFO;
147	index = 2;
148	break;
149	case 0x04:
150	key = KEY_RADIO;
151	index = 3;
152	break;
153	}
154
155	if (key) {
156	input_event(zc->input_ep81, EV_KEY, key, 1);
157	zc->last_key[index] = key;
158	}
159
160	ret = 1;
161	break;
162	}
163	}
164
165	return ret;
166	}
167
168	static int zc_probe(struct hid_device hdev, const struct hid_device_id id)
169	{
170	int ret;
171	struct zc_device *zc;
172
173	zc = kzalloc(sizeof(*zc), GFP_KERNEL);
174	if (zc == NULL) {
175	dev_err(&hdev->dev, "zydacron: can't alloc descriptor\n");
176	return -ENOMEM;
177	}
178
179	hid_set_drvdata(hdev, zc);
180
181	ret = hid_parse(hdev);
182	if (ret) {
183	dev_err(&hdev->dev, "zydacron: parse failed\n");
184	goto err_free;
185	}
186
187	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
188	if (ret) {
189	dev_err(&hdev->dev, "zydacron: hw start failed\n");
190	goto err_free;
191	}
192
193	return 0;
194	err_free:
195	kfree(zc);
196
197	return ret;
198	}
199
200	static void zc_remove(struct hid_device *hdev)
201	{
202	struct zc_device *zc = hid_get_drvdata(hdev);
203
204	hid_hw_stop(hdev);
205
206	if (NULL != zc)
207	kfree(zc);
208	}
209
210	static const struct hid_device_id zc_devices[] = {
211	{ HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
212	{ }
213	};
214	MODULE_DEVICE_TABLE(hid, zc_devices);
215
216	static struct hid_driver zc_driver = {
217	.name = "zydacron",
218	.id_table = zc_devices,
219	.report_fixup = zc_report_fixup,
220	.input_mapping = zc_input_mapping,
221	.raw_event = zc_raw_event,
222	.probe = zc_probe,
223	.remove = zc_remove,
224	};
225
226	static int __init zc_init(void)
227	{
228	return hid_register_driver(&zc_driver);
229	}
230
231	static void __exit zc_exit(void)
232	{
233	hid_unregister_driver(&zc_driver);
234	}
235
236	module_init(zc_init);
237	module_exit(zc_exit);
238	MODULE_LICENSE("GPL");