[net-next-2.6.git] / drivers / media / dvb / dvb-usb / dvb-usb-remote.c

/* dvb-usb-remote.c is part of the DVB USB library.
 *
 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
 * see dvb-usb-init.c for copyright information.
 *
 * This file contains functions for initializing the the input-device and for handling remote-control-queries.
 */
#include "dvb-usb-common.h"
#include <linux/usb/input.h>

/* Remote-control poll function - called every dib->rc_query_interval ms to see
 * whether the remote control has received anything.
 *
 * TODO: Fix the repeat rate of the input device.
 */
static void dvb_usb_read_remote_control(struct work_struct *work)
{
	struct dvb_usb_device *d =
		container_of(work, struct dvb_usb_device, rc_query_work.work);
	u32 event;
	int state;

	/* TODO: need a lock here.  We can simply skip checking for the remote control
	   if we're busy. */

	/* when the parameter has been set to 1 via sysfs while the driver was running */
	if (dvb_usb_disable_rc_polling)
		return;

	if (d->props.rc_query(d,&event,&state)) {
		err("error while querying for an remote control event.");
		goto schedule;
	}


	switch (state) {
		case REMOTE_NO_KEY_PRESSED:
			break;
		case REMOTE_KEY_PRESSED:
			deb_rc("key pressed\n");
			d->last_event = event;
		case REMOTE_KEY_REPEAT:
			deb_rc("key repeated\n");
			input_event(d->rc_input_dev, EV_KEY, event, 1);
			input_event(d->rc_input_dev, EV_KEY, d->last_event, 0);
			input_sync(d->rc_input_dev);
			break;
		default:
			break;
	}

/* improved repeat handling ???
	switch (state) {
		case REMOTE_NO_KEY_PRESSED:
			deb_rc("NO KEY PRESSED\n");
			if (d->last_state != REMOTE_NO_KEY_PRESSED) {
				deb_rc("releasing event %d\n",d->last_event);
				input_event(d->rc_input_dev, EV_KEY, d->last_event, 0);
				input_sync(d->rc_input_dev);
			}
			d->last_state = REMOTE_NO_KEY_PRESSED;
			d->last_event = 0;
			break;
		case REMOTE_KEY_PRESSED:
			deb_rc("KEY PRESSED\n");
			deb_rc("pressing event %d\n",event);

			input_event(d->rc_input_dev, EV_KEY, event, 1);
			input_sync(d->rc_input_dev);

			d->last_event = event;
			d->last_state = REMOTE_KEY_PRESSED;
			break;
		case REMOTE_KEY_REPEAT:
			deb_rc("KEY_REPEAT\n");
			if (d->last_state != REMOTE_NO_KEY_PRESSED) {
				deb_rc("repeating event %d\n",d->last_event);
				input_event(d->rc_input_dev, EV_KEY, d->last_event, 2);
				input_sync(d->rc_input_dev);
				d->last_state = REMOTE_KEY_REPEAT;
			}
		default:
			break;
	}
*/

schedule:
	schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));
}

int dvb_usb_remote_init(struct dvb_usb_device *d)
{
	int i;

	if (d->props.rc_key_map == NULL ||
		d->props.rc_query == NULL ||
		dvb_usb_disable_rc_polling)
		return 0;

	usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys));
	strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys));

	d->rc_input_dev = input_allocate_device();
	if (!d->rc_input_dev)
		return -ENOMEM;

	d->rc_input_dev->evbit[0] = BIT(EV_KEY);
	d->rc_input_dev->keycodesize = sizeof(unsigned char);
	d->rc_input_dev->keycodemax = KEY_MAX;
	d->rc_input_dev->name = "IR-receiver inside an USB DVB receiver";
	d->rc_input_dev->phys = d->rc_phys;
	usb_to_input_id(d->udev, &d->rc_input_dev->id);
	d->rc_input_dev->cdev.dev = &d->udev->dev;

	/* set the bits for the keys */
	deb_rc("key map size: %d\n", d->props.rc_key_map_size);
	for (i = 0; i < d->props.rc_key_map_size; i++) {
		deb_rc("setting bit for event %d item %d\n",d->props.rc_key_map[i].event, i);
		set_bit(d->props.rc_key_map[i].event, d->rc_input_dev->keybit);
	}

	/* Start the remote-control polling. */
	if (d->props.rc_interval < 40)
		d->props.rc_interval = 100; /* default */

	/* setting these two values to non-zero, we have to manage key repeats */
	d->rc_input_dev->rep[REP_PERIOD] = d->props.rc_interval;
	d->rc_input_dev->rep[REP_DELAY]  = d->props.rc_interval + 150;

	input_register_device(d->rc_input_dev);

	INIT_DELAYED_WORK(&d->rc_query_work, dvb_usb_read_remote_control);

	info("schedule remote query interval to %d msecs.", d->props.rc_interval);
	schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));

	d->state |= DVB_USB_STATE_REMOTE;

	return 0;
}

int dvb_usb_remote_exit(struct dvb_usb_device *d)
{
	if (d->state & DVB_USB_STATE_REMOTE) {
		cancel_delayed_work(&d->rc_query_work);
		flush_scheduled_work();
		input_unregister_device(d->rc_input_dev);
	}
	d->state &= ~DVB_USB_STATE_REMOTE;
	return 0;
}

#define DVB_USB_RC_NEC_EMPTY           0x00
#define DVB_USB_RC_NEC_KEY_PRESSED     0x01
#define DVB_USB_RC_NEC_KEY_REPEATED    0x02
int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d,
		u8 keybuf[5], u32 *event, int *state)
{
	int i;
	struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
	*event = 0;
	*state = REMOTE_NO_KEY_PRESSED;
	switch (keybuf[0]) {
		case DVB_USB_RC_NEC_EMPTY:
			break;
		case DVB_USB_RC_NEC_KEY_PRESSED:
			if ((u8) ~keybuf[1] != keybuf[2] ||
				(u8) ~keybuf[3] != keybuf[4]) {
				deb_err("remote control checksum failed.\n");
				break;
			}
			/* See if we can match the raw key code. */
			for (i = 0; i < d->props.rc_key_map_size; i++)
				if (keymap[i].custom == keybuf[1] &&
					keymap[i].data == keybuf[3]) {
					*event = keymap[i].event;
					*state = REMOTE_KEY_PRESSED;
					return 0;
				}
			deb_err("key mapping failed - no appropriate key found in keymapping\n");
			break;
		case DVB_USB_RC_NEC_KEY_REPEATED:
			*state = REMOTE_KEY_REPEAT;
			break;
		default:
			deb_err("unkown type of remote status: %d\n",keybuf[0]);
			break;
	}
	return 0;
}
EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event);
Commit	Line	Data
776338e1 JS	1	/* dvb-usb-remote.c is part of the DVB USB library.
776338e1 JS	2	*
4d43e13f	3	* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
776338e1 JS	4	* see dvb-usb-init.c for copyright information.
	5	*
	6	* This file contains functions for initializing the the input-device and for handling remote-control-queries.
	7	*/
	8	#include "dvb-usb-common.h"
4fcd7d8f	9	#include <linux/usb/input.h>
776338e1 JS	10
	11	/* Remote-control poll function - called every dib->rc_query_interval ms to see
	12	* whether the remote control has received anything.
	13	*
	14	* TODO: Fix the repeat rate of the input device.
	15	*/
c4028958	16	static void dvb_usb_read_remote_control(struct work_struct *work)
776338e1	17	{
c4028958 DH	18	struct dvb_usb_device *d =
c4028958 DH	19	container_of(work, struct dvb_usb_device, rc_query_work.work);
776338e1 JS	20	u32 event;
	21	int state;
	22
	23	/* TODO: need a lock here. We can simply skip checking for the remote control
	24	if we're busy. */
	25
c9b06fa4 PB	26	/* when the parameter has been set to 1 via sysfs while the driver was running */
	27	if (dvb_usb_disable_rc_polling)
	28	return;
	29
776338e1 JS	30	if (d->props.rc_query(d,&event,&state)) {
	31	err("error while querying for an remote control event.");
	32	goto schedule;
	33	}
	34
	35
	36	switch (state) {
	37	case REMOTE_NO_KEY_PRESSED:
	38	break;
	39	case REMOTE_KEY_PRESSED:
	40	deb_rc("key pressed\n");
	41	d->last_event = event;
	42	case REMOTE_KEY_REPEAT:
	43	deb_rc("key repeated\n");
b7df3910 DT	44	input_event(d->rc_input_dev, EV_KEY, event, 1);
	45	input_event(d->rc_input_dev, EV_KEY, d->last_event, 0);
	46	input_sync(d->rc_input_dev);
776338e1 JS	47	break;
	48	default:
	49	break;
	50	}
	51
	52	/* improved repeat handling ???
	53	switch (state) {
	54	case REMOTE_NO_KEY_PRESSED:
	55	deb_rc("NO KEY PRESSED\n");
	56	if (d->last_state != REMOTE_NO_KEY_PRESSED) {
	57	deb_rc("releasing event %d\n",d->last_event);
b7df3910 DT	58	input_event(d->rc_input_dev, EV_KEY, d->last_event, 0);
b7df3910 DT	59	input_sync(d->rc_input_dev);
776338e1 JS	60	}
	61	d->last_state = REMOTE_NO_KEY_PRESSED;
	62	d->last_event = 0;
	63	break;
	64	case REMOTE_KEY_PRESSED:
	65	deb_rc("KEY PRESSED\n");
	66	deb_rc("pressing event %d\n",event);
	67
b7df3910 DT	68	input_event(d->rc_input_dev, EV_KEY, event, 1);
b7df3910 DT	69	input_sync(d->rc_input_dev);
776338e1 JS	70
	71	d->last_event = event;
	72	d->last_state = REMOTE_KEY_PRESSED;
	73	break;
	74	case REMOTE_KEY_REPEAT:
	75	deb_rc("KEY_REPEAT\n");
	76	if (d->last_state != REMOTE_NO_KEY_PRESSED) {
	77	deb_rc("repeating event %d\n",d->last_event);
b7df3910 DT	78	input_event(d->rc_input_dev, EV_KEY, d->last_event, 2);
b7df3910 DT	79	input_sync(d->rc_input_dev);
776338e1 JS	80	d->last_state = REMOTE_KEY_REPEAT;
	81	}
	82	default:
	83	break;
	84	}
	85	*/
	86
	87	schedule:
	88	schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));
	89	}
	90
	91	int dvb_usb_remote_init(struct dvb_usb_device *d)
	92	{
	93	int i;
b7df3910	94
c9b06fa4 PB	95	if (d->props.rc_key_map == NULL \|\|
	96	d->props.rc_query == NULL \|\|
	97	dvb_usb_disable_rc_polling)
776338e1 JS	98	return 0;
776338e1 JS	99
b7df3910	100	usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys));
4fcd7d8f	101	strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys));
b7df3910 DT	102
	103	d->rc_input_dev = input_allocate_device();
	104	if (!d->rc_input_dev)
	105	return -ENOMEM;
776338e1	106
b7df3910 DT	107	d->rc_input_dev->evbit[0] = BIT(EV_KEY);
	108	d->rc_input_dev->keycodesize = sizeof(unsigned char);
	109	d->rc_input_dev->keycodemax = KEY_MAX;
	110	d->rc_input_dev->name = "IR-receiver inside an USB DVB receiver";
	111	d->rc_input_dev->phys = d->rc_phys;
4fcd7d8f UU	112	usb_to_input_id(d->udev, &d->rc_input_dev->id);
4fcd7d8f UU	113	d->rc_input_dev->cdev.dev = &d->udev->dev;
776338e1 JS	114
776338e1 JS	115	/* set the bits for the keys */
b7df3910	116	deb_rc("key map size: %d\n", d->props.rc_key_map_size);
776338e1 JS	117	for (i = 0; i < d->props.rc_key_map_size; i++) {
776338e1 JS	118	deb_rc("setting bit for event %d item %d\n",d->props.rc_key_map[i].event, i);
b7df3910	119	set_bit(d->props.rc_key_map[i].event, d->rc_input_dev->keybit);
776338e1 JS	120	}
	121
	122	/* Start the remote-control polling. */
	123	if (d->props.rc_interval < 40)
	124	d->props.rc_interval = 100; /* default */
	125
	126	/* setting these two values to non-zero, we have to manage key repeats */
b7df3910 DT	127	d->rc_input_dev->rep[REP_PERIOD] = d->props.rc_interval;
b7df3910 DT	128	d->rc_input_dev->rep[REP_DELAY] = d->props.rc_interval + 150;
776338e1	129
b7df3910	130	input_register_device(d->rc_input_dev);
776338e1	131
c4028958	132	INIT_DELAYED_WORK(&d->rc_query_work, dvb_usb_read_remote_control);
776338e1	133
b7df3910	134	info("schedule remote query interval to %d msecs.", d->props.rc_interval);
776338e1 JS	135	schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));
	136
	137	d->state \|= DVB_USB_STATE_REMOTE;
	138
	139	return 0;
	140	}
	141
	142	int dvb_usb_remote_exit(struct dvb_usb_device *d)
	143	{
	144	if (d->state & DVB_USB_STATE_REMOTE) {
	145	cancel_delayed_work(&d->rc_query_work);
	146	flush_scheduled_work();
b7df3910	147	input_unregister_device(d->rc_input_dev);
776338e1 JS	148	}
	149	d->state &= ~DVB_USB_STATE_REMOTE;
	150	return 0;
	151	}
	152
	153	#define DVB_USB_RC_NEC_EMPTY 0x00
	154	#define DVB_USB_RC_NEC_KEY_PRESSED 0x01
	155	#define DVB_USB_RC_NEC_KEY_REPEATED 0x02
	156	int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d,
	157	u8 keybuf[5], u32 event, int state)
	158	{
	159	int i;
	160	struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
	161	*event = 0;
	162	*state = REMOTE_NO_KEY_PRESSED;
	163	switch (keybuf[0]) {
	164	case DVB_USB_RC_NEC_EMPTY:
	165	break;
	166	case DVB_USB_RC_NEC_KEY_PRESSED:
	167	if ((u8) ~keybuf[1] != keybuf[2] \|\|
	168	(u8) ~keybuf[3] != keybuf[4]) {
	169	deb_err("remote control checksum failed.\n");
	170	break;
	171	}
	172	/* See if we can match the raw key code. */
1df896aa	173	for (i = 0; i < d->props.rc_key_map_size; i++)
776338e1 JS	174	if (keymap[i].custom == keybuf[1] &&
	175	keymap[i].data == keybuf[3]) {
	176	*event = keymap[i].event;
	177	*state = REMOTE_KEY_PRESSED;
1df896aa	178	return 0;
776338e1 JS	179	}
	180	deb_err("key mapping failed - no appropriate key found in keymapping\n");
	181	break;
	182	case DVB_USB_RC_NEC_KEY_REPEATED:
	183	*state = REMOTE_KEY_REPEAT;
	184	break;
	185	default:
	186	deb_err("unkown type of remote status: %d\n",keybuf[0]);
	187	break;
	188	}
	189	return 0;
	190	}
	191	EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event);