[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / ir-kbd-i2c.c

/*
 *
 * keyboard input driver for i2c IR remote controls
 *
 * Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org>
 * modified for PixelView (BT878P+W/FM) by
 *      Michal Kochanowicz <mkochano@pld.org.pl>
 *      Christoph Bartelmus <lirc@bartelmus.de>
 * modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by
 *      Ulrich Mueller <ulrich.mueller42@web.de>
 * modified for em2820 based USB TV tuners by
 *      Markus Rechberger <mrechberger@gmail.com>
 * modified for DViCO Fusion HDTV 5 RT GOLD by
 *      Chaogui Zhang <czhang1974@gmail.com>
 * modified for MSI TV@nywhere Plus by
 *      Henry Wong <henry@stuffedcow.net>
 *      Mark Schultz <n9xmj@yahoo.com>
 *      Brian Rogers <brian_rogers@comcast.net>
 * modified for AVerMedia Cardbus by
 *      Oldrich Jedlicka <oldium.pro@seznam.cz>
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/workqueue.h>

#include <media/ir-core.h>
#include <media/ir-kbd-i2c.h>

/* ----------------------------------------------------------------------- */
/* insmod parameters                                                       */

static int debug;
module_param(debug, int, 0644);    /* debug level (0,1,2) */

static int hauppauge;
module_param(hauppauge, int, 0644);    /* Choose Hauppauge remote */
MODULE_PARM_DESC(hauppauge, "Specify Hauppauge remote: 0=black, 1=grey (defaults to 0)");


#define MODULE_NAME "ir-kbd-i2c"
#define dprintk(level, fmt, arg...)	if (debug >= level) \
	printk(KERN_DEBUG MODULE_NAME ": " fmt , ## arg)

/* ----------------------------------------------------------------------- */

static int get_key_haup_common(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
			       int size, int offset)
{
	unsigned char buf[6];
	int start, range, toggle, dev, code, ircode;

	/* poll IR chip */
	if (size != i2c_master_recv(ir->c, buf, size))
		return -EIO;

	/* split rc5 data block ... */
	start  = (buf[offset] >> 7) &    1;
	range  = (buf[offset] >> 6) &    1;
	toggle = (buf[offset] >> 5) &    1;
	dev    =  buf[offset]       & 0x1f;
	code   = (buf[offset+1] >> 2) & 0x3f;

	/* rc5 has two start bits
	 * the first bit must be one
	 * the second bit defines the command range (1 = 0-63, 0 = 64 - 127)
	 */
	if (!start)
		/* no key pressed */
		return 0;
	/*
	 * Hauppauge remotes (black/silver) always use
	 * specific device ids. If we do not filter the
	 * device ids then messages destined for devices
	 * such as TVs (id=0) will get through causing
	 * mis-fired events.
	 *
	 * We also filter out invalid key presses which
	 * produce annoying debug log entries.
	 */
	ircode= (start << 12) | (toggle << 11) | (dev << 6) | code;
	if ((ircode & 0x1fff)==0x1fff)
		/* invalid key press */
		return 0;

	if (dev!=0x1e && dev!=0x1f)
		/* not a hauppauge remote */
		return 0;

	if (!range)
		code += 64;

	dprintk(1,"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n",
		start, range, toggle, dev, code);

	/* return key */
	*ir_key = code;
	*ir_raw = ircode;
	return 1;
}

static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
	return get_key_haup_common (ir, ir_key, ir_raw, 3, 0);
}

static int get_key_haup_xvr(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
	return get_key_haup_common (ir, ir_key, ir_raw, 6, 3);
}

static int get_key_pixelview(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
	unsigned char b;

	/* poll IR chip */
	if (1 != i2c_master_recv(ir->c, &b, 1)) {
		dprintk(1,"read error\n");
		return -EIO;
	}
	*ir_key = b;
	*ir_raw = b;
	return 1;
}

static int get_key_fusionhdtv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
	unsigned char buf[4];

	/* poll IR chip */
	if (4 != i2c_master_recv(ir->c, buf, 4)) {
		dprintk(1,"read error\n");
		return -EIO;
	}

	if(buf[0] !=0 || buf[1] !=0 || buf[2] !=0 || buf[3] != 0)
		dprintk(2, "%s: 0x%2x 0x%2x 0x%2x 0x%2x\n", __func__,
			buf[0], buf[1], buf[2], buf[3]);

	/* no key pressed or signal from other ir remote */
	if(buf[0] != 0x1 ||  buf[1] != 0xfe)
		return 0;

	*ir_key = buf[2];
	*ir_raw = (buf[2] << 8) | buf[3];

	return 1;
}

static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
	unsigned char b;

	/* poll IR chip */
	if (1 != i2c_master_recv(ir->c, &b, 1)) {
		dprintk(1,"read error\n");
		return -EIO;
	}

	/* it seems that 0xFE indicates that a button is still hold
	   down, while 0xff indicates that no button is hold
	   down. 0xfe sequences are sometimes interrupted by 0xFF */

	dprintk(2,"key %02x\n", b);

	if (b == 0xff)
		return 0;

	if (b == 0xfe)
		/* keep old data */
		return 1;

	*ir_key = b;
	*ir_raw = b;
	return 1;
}

static int get_key_avermedia_cardbus(struct IR_i2c *ir,
				     u32 *ir_key, u32 *ir_raw)
{
	unsigned char subaddr, key, keygroup;
	struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0,
				   .buf = &subaddr, .len = 1},
				 { .addr = ir->c->addr, .flags = I2C_M_RD,
				  .buf = &key, .len = 1} };
	subaddr = 0x0d;
	if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
		dprintk(1, "read error\n");
		return -EIO;
	}

	if (key == 0xff)
		return 0;

	subaddr = 0x0b;
	msg[1].buf = &keygroup;
	if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
		dprintk(1, "read error\n");
		return -EIO;
	}

	if (keygroup == 0xff)
		return 0;

	dprintk(1, "read key 0x%02x/0x%02x\n", key, keygroup);
	if (keygroup < 2 || keygroup > 3) {
		/* Only a warning */
		dprintk(1, "warning: invalid key group 0x%02x for key 0x%02x\n",
								keygroup, key);
	}
	key |= (keygroup & 1) << 6;

	*ir_key = key;
	*ir_raw = key;
	return 1;
}

/* ----------------------------------------------------------------------- */

static void ir_key_poll(struct IR_i2c *ir)
{
	static u32 ir_key, ir_raw;
	int rc;

	dprintk(2,"ir_poll_key\n");
	rc = ir->get_key(ir, &ir_key, &ir_raw);
	if (rc < 0) {
		dprintk(2,"error\n");
		return;
	}

	if (rc)
		ir_keydown(ir->rc, ir_key, 0);
}

static void ir_work(struct work_struct *work)
{
	struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work);

	ir_key_poll(ir);
	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval));
}

/* ----------------------------------------------------------------------- */

static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
	char *ir_codes = NULL;
	const char *name = NULL;
	u64 ir_type = IR_TYPE_UNKNOWN;
	struct IR_i2c *ir;
	struct rc_dev *rc;
	struct i2c_adapter *adap = client->adapter;
	unsigned short addr = client->addr;
	int err;

	ir = kzalloc(sizeof(struct IR_i2c),GFP_KERNEL);
	rc = rc_allocate_device();
	if (!ir || !rc) {
		err = -ENOMEM;
		goto err_out_free;
	}

	ir->c = client;
	ir->rc = rc;
	ir->polling_interval = DEFAULT_POLLING_INTERVAL;
	i2c_set_clientdata(client, ir);

	switch(addr) {
	case 0x64:
		name        = "Pixelview";
		ir->get_key = get_key_pixelview;
		ir_type     = IR_TYPE_OTHER;
		ir_codes    = RC_MAP_EMPTY;
		break;
	case 0x18:
	case 0x1f:
	case 0x1a:
		name        = "Hauppauge";
		ir->get_key = get_key_haup;
		ir_type     = IR_TYPE_RC5;
		if (hauppauge == 1) {
			ir_codes    = RC_MAP_HAUPPAUGE_NEW;
		} else {
			ir_codes    = RC_MAP_RC5_TV;
		}
		break;
	case 0x30:
		name        = "KNC One";
		ir->get_key = get_key_knc1;
		ir_type     = IR_TYPE_OTHER;
		ir_codes    = RC_MAP_EMPTY;
		break;
	case 0x6b:
		name        = "FusionHDTV";
		ir->get_key = get_key_fusionhdtv;
		ir_type     = IR_TYPE_RC5;
		ir_codes    = RC_MAP_FUSIONHDTV_MCE;
		break;
	case 0x40:
		name        = "AVerMedia Cardbus remote";
		ir->get_key = get_key_avermedia_cardbus;
		ir_type     = IR_TYPE_OTHER;
		ir_codes    = RC_MAP_AVERMEDIA_CARDBUS;
		break;
	}

	/* Let the caller override settings */
	if (client->dev.platform_data) {
		const struct IR_i2c_init_data *init_data =
						client->dev.platform_data;

		ir_codes = init_data->ir_codes;
		name = init_data->name;
		if (init_data->type)
			ir_type = init_data->type;

		if (init_data->polling_interval)
			ir->polling_interval = init_data->polling_interval;

		switch (init_data->internal_get_key_func) {
		case IR_KBD_GET_KEY_CUSTOM:
			/* The bridge driver provided us its own function */
			ir->get_key = init_data->get_key;
			break;
		case IR_KBD_GET_KEY_PIXELVIEW:
			ir->get_key = get_key_pixelview;
			break;
		case IR_KBD_GET_KEY_HAUP:
			ir->get_key = get_key_haup;
			break;
		case IR_KBD_GET_KEY_KNC1:
			ir->get_key = get_key_knc1;
			break;
		case IR_KBD_GET_KEY_FUSIONHDTV:
			ir->get_key = get_key_fusionhdtv;
			break;
		case IR_KBD_GET_KEY_HAUP_XVR:
			ir->get_key = get_key_haup_xvr;
			break;
		case IR_KBD_GET_KEY_AVERMEDIA_CARDBUS:
			ir->get_key = get_key_avermedia_cardbus;
			break;
		}
	}

	/* Make sure we are all setup before going on */
	if (!name || !ir->get_key || !ir_type || !ir_codes) {
		dprintk(1, ": Unsupported device at address 0x%02x\n",
			addr);
		err = -ENODEV;
		goto err_out_free;
	}

	/* Sets name */
	snprintf(ir->name, sizeof(ir->name), "i2c IR (%s)", name);
	ir->ir_codes = ir_codes;

	snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0",
		 dev_name(&adap->dev),
		 dev_name(&client->dev));

	/* init + register input device */
	rc->input_id.bustype = BUS_I2C;
	rc->input_name       = ir->name;
	rc->input_phys       = ir->phys;
	rc->map_name         = ir->ir_codes;
	rc->driver_name      = MODULE_NAME;

	err = rc_register_device(rc);
	if (err)
		goto err_out_free;

	printk(MODULE_NAME ": %s detected at %s [%s]\n",
	       ir->name, ir->phys, adap->name);

	/* start polling via eventd */
	INIT_DELAYED_WORK(&ir->work, ir_work);
	schedule_delayed_work(&ir->work, 0);

	return 0;

 err_out_free:
	rc_free_device(rc);
	kfree(ir);
	return err;
}

static int ir_remove(struct i2c_client *client)
{
	struct IR_i2c *ir = i2c_get_clientdata(client);

	/* kill outstanding polls */
	cancel_delayed_work_sync(&ir->work);

	/* unregister device */
	rc_unregister_device(ir->rc);

	/* free memory */
	kfree(ir);
	return 0;
}

static const struct i2c_device_id ir_kbd_id[] = {
	/* Generic entry for any IR receiver */
	{ "ir_video", 0 },
	/* IR device specific entries should be added here */
	{ "ir_rx_z8f0811_haup", 0 },
	{ }
};

static struct i2c_driver driver = {
	.driver = {
		.name   = "ir-kbd-i2c",
	},
	.probe          = ir_probe,
	.remove         = ir_remove,
	.id_table       = ir_kbd_id,
};

/* ----------------------------------------------------------------------- */

MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller");
MODULE_DESCRIPTION("input driver for i2c IR remote controls");
MODULE_LICENSE("GPL");

static int __init ir_init(void)
{
	return i2c_add_driver(&driver);
}

static void __exit ir_fini(void)
{
	i2c_del_driver(&driver);
}

module_init(ir_init);
module_exit(ir_fini);

/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	*
	3	* keyboard input driver for i2c IR remote controls
	4	*
	5	* Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org>
	6	* modified for PixelView (BT878P+W/FM) by
	7	* Michal Kochanowicz <mkochano@pld.org.pl>
	8	* Christoph Bartelmus <lirc@bartelmus.de>
	9	* modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by
	10	* Ulrich Mueller <ulrich.mueller42@web.de>
c365864f MR	11	* modified for em2820 based USB TV tuners by
c365864f MR	12	* Markus Rechberger <mrechberger@gmail.com>
d54d6980 CZ	13	* modified for DViCO Fusion HDTV 5 RT GOLD by
d54d6980 CZ	14	* Chaogui Zhang <czhang1974@gmail.com>
ba340b40 BR	15	* modified for MSI TV@nywhere Plus by
	16	* Henry Wong <henry@stuffedcow.net>
	17	* Mark Schultz <n9xmj@yahoo.com>
	18	* Brian Rogers <brian_rogers@comcast.net>
cb3bf504 OJ	19	* modified for AVerMedia Cardbus by
cb3bf504 OJ	20	* Oldrich Jedlicka <oldium.pro@seznam.cz>
1da177e4 LT	21	*
	22	* This program is free software; you can redistribute it and/or modify
	23	* it under the terms of the GNU General Public License as published by
	24	* the Free Software Foundation; either version 2 of the License, or
	25	* (at your option) any later version.
	26	*
	27	* This program is distributed in the hope that it will be useful,
	28	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	29	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	30	* GNU General Public License for more details.
	31	*
	32	* You should have received a copy of the GNU General Public License
	33	* along with this program; if not, write to the Free Software
	34	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	35	*
	36	*/
	37
	38	#include <linux/module.h>
1da177e4 LT	39	#include <linux/init.h>
1da177e4 LT	40	#include <linux/kernel.h>
1da177e4 LT	41	#include <linux/string.h>
	42	#include <linux/timer.h>
	43	#include <linux/delay.h>
	44	#include <linux/errno.h>
	45	#include <linux/slab.h>
	46	#include <linux/i2c.h>
	47	#include <linux/workqueue.h>
674434c6	48
0dc50942	49	#include <media/ir-core.h>
d5e52653	50	#include <media/ir-kbd-i2c.h>
c365864f	51
1da177e4 LT	52	/* ----------------------------------------------------------------------- */
	53	/* insmod parameters */
	54
	55	static int debug;
	56	module_param(debug, int, 0644); /* debug level (0,1,2) */
	57
ff699e6b	58	static int hauppauge;
bf47e4e4 A	59	module_param(hauppauge, int, 0644); /* Choose Hauppauge remote */
	60	MODULE_PARM_DESC(hauppauge, "Specify Hauppauge remote: 0=black, 1=grey (defaults to 0)");
	61
	62
727e625c	63	#define MODULE_NAME "ir-kbd-i2c"
1da177e4	64	#define dprintk(level, fmt, arg...) if (debug >= level) \
727e625c	65	printk(KERN_DEBUG MODULE_NAME ": " fmt , ## arg)
1da177e4 LT	66
	67	/* ----------------------------------------------------------------------- */
	68
39cf1e81 JF	69	static int get_key_haup_common(struct IR_i2c ir, u32 ir_key, u32 *ir_raw,
39cf1e81 JF	70	int size, int offset)
1da177e4	71	{
39cf1e81	72	unsigned char buf[6];
34c08029	73	int start, range, toggle, dev, code, ircode;
1da177e4 LT	74
1da177e4 LT	75	/* poll IR chip */
c668f32d	76	if (size != i2c_master_recv(ir->c, buf, size))
1da177e4 LT	77	return -EIO;
	78
	79	/* split rc5 data block ... */
39cf1e81 JF	80	start = (buf[offset] >> 7) & 1;
	81	range = (buf[offset] >> 6) & 1;
	82	toggle = (buf[offset] >> 5) & 1;
	83	dev = buf[offset] & 0x1f;
	84	code = (buf[offset+1] >> 2) & 0x3f;
1da177e4	85
cc7093df DH	86	/* rc5 has two start bits
	87	* the first bit must be one
	88	* the second bit defines the command range (1 = 0-63, 0 = 64 - 127)
	89	*/
	90	if (!start)
1da177e4 LT	91	/* no key pressed */
1da177e4 LT	92	return 0;
34c08029 DB	93	/*
	94	* Hauppauge remotes (black/silver) always use
	95	* specific device ids. If we do not filter the
	96	* device ids then messages destined for devices
	97	* such as TVs (id=0) will get through causing
	98	* mis-fired events.
	99	*
	100	* We also filter out invalid key presses which
	101	* produce annoying debug log entries.
	102	*/
	103	ircode= (start << 12) \| (toggle << 11) \| (dev << 6) \| code;
	104	if ((ircode & 0x1fff)==0x1fff)
	105	/* invalid key press */
	106	return 0;
	107
	108	if (dev!=0x1e && dev!=0x1f)
	109	/* not a hauppauge remote */
	110	return 0;
cc7093df DH	111
	112	if (!range)
	113	code += 64;
	114
	115	dprintk(1,"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n",
	116	start, range, toggle, dev, code);
1da177e4 LT	117
	118	/* return key */
	119	*ir_key = code;
34c08029	120	*ir_raw = ircode;
1da177e4 LT	121	return 1;
	122	}
	123
157da276	124	static int get_key_haup(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
39cf1e81 JF	125	{
	126	return get_key_haup_common (ir, ir_key, ir_raw, 3, 0);
	127	}
	128
157da276	129	static int get_key_haup_xvr(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
39cf1e81 JF	130	{
	131	return get_key_haup_common (ir, ir_key, ir_raw, 6, 3);
	132	}
	133
d5e52653	134	static int get_key_pixelview(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
1da177e4	135	{
4ac97914	136	unsigned char b;
1da177e4 LT	137
1da177e4 LT	138	/* poll IR chip */
c668f32d	139	if (1 != i2c_master_recv(ir->c, &b, 1)) {
1da177e4 LT	140	dprintk(1,"read error\n");
	141	return -EIO;
	142	}
	143	*ir_key = b;
	144	*ir_raw = b;
	145	return 1;
	146	}
	147
3c44358c	148	static int get_key_fusionhdtv(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
d54d6980 CZ	149	{
	150	unsigned char buf[4];
	151
	152	/* poll IR chip */
c668f32d	153	if (4 != i2c_master_recv(ir->c, buf, 4)) {
d54d6980 CZ	154	dprintk(1,"read error\n");
	155	return -EIO;
	156	}
	157
	158	if(buf[0] !=0 \|\| buf[1] !=0 \|\| buf[2] !=0 \|\| buf[3] != 0)
7e28adb2	159	dprintk(2, "%s: 0x%2x 0x%2x 0x%2x 0x%2x\n", __func__,
d54d6980 CZ	160	buf[0], buf[1], buf[2], buf[3]);
	161
	162	/* no key pressed or signal from other ir remote */
	163	if(buf[0] != 0x1 \|\| buf[1] != 0xfe)
	164	return 0;
	165
	166	*ir_key = buf[2];
	167	*ir_raw = (buf[2] << 8) \| buf[3];
	168
	169	return 1;
d54d6980 CZ	170	}
d54d6980 CZ	171
d5e52653	172	static int get_key_knc1(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
1da177e4 LT	173	{
	174	unsigned char b;
	175
	176	/* poll IR chip */
c668f32d	177	if (1 != i2c_master_recv(ir->c, &b, 1)) {
1da177e4 LT	178	dprintk(1,"read error\n");
	179	return -EIO;
	180	}
	181
	182	/* it seems that 0xFE indicates that a button is still hold
4f9c05aa MCC	183	down, while 0xff indicates that no button is hold
4f9c05aa MCC	184	down. 0xfe sequences are sometimes interrupted by 0xFF */
1da177e4 LT	185
	186	dprintk(2,"key %02x\n", b);
	187
4f9c05aa	188	if (b == 0xff)
1da177e4 LT	189	return 0;
1da177e4 LT	190
4f9c05aa	191	if (b == 0xfe)
1da177e4 LT	192	/* keep old data */
	193	return 1;
	194
	195	*ir_key = b;
	196	*ir_raw = b;
	197	return 1;
	198	}
	199
cb3bf504 OJ	200	static int get_key_avermedia_cardbus(struct IR_i2c *ir,
	201	u32 ir_key, u32 ir_raw)
	202	{
	203	unsigned char subaddr, key, keygroup;
c668f32d	204	struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0,
cb3bf504	205	.buf = &subaddr, .len = 1},
c668f32d	206	{ .addr = ir->c->addr, .flags = I2C_M_RD,
cb3bf504 OJ	207	.buf = &key, .len = 1} };
cb3bf504 OJ	208	subaddr = 0x0d;
c668f32d	209	if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
cb3bf504 OJ	210	dprintk(1, "read error\n");
	211	return -EIO;
	212	}
	213
	214	if (key == 0xff)
	215	return 0;
	216
	217	subaddr = 0x0b;
	218	msg[1].buf = &keygroup;
c668f32d	219	if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
cb3bf504 OJ	220	dprintk(1, "read error\n");
	221	return -EIO;
	222	}
	223
	224	if (keygroup == 0xff)
	225	return 0;
	226
	227	dprintk(1, "read key 0x%02x/0x%02x\n", key, keygroup);
	228	if (keygroup < 2 \|\| keygroup > 3) {
	229	/* Only a warning */
	230	dprintk(1, "warning: invalid key group 0x%02x for key 0x%02x\n",
	231	keygroup, key);
	232	}
	233	key \|= (keygroup & 1) << 6;
	234
	235	*ir_key = key;
	236	*ir_raw = key;
	237	return 1;
	238	}
	239
1da177e4 LT	240	/* ----------------------------------------------------------------------- */
1da177e4 LT	241
d5e52653	242	static void ir_key_poll(struct IR_i2c *ir)
1da177e4 LT	243	{
	244	static u32 ir_key, ir_raw;
	245	int rc;
	246
	247	dprintk(2,"ir_poll_key\n");
	248	rc = ir->get_key(ir, &ir_key, &ir_raw);
	249	if (rc < 0) {
	250	dprintk(2,"error\n");
	251	return;
	252	}
	253
0dc50942	254	if (rc)
d8b4b582	255	ir_keydown(ir->rc, ir_key, 0);
1da177e4 LT	256	}
1da177e4 LT	257
c4028958	258	static void ir_work(struct work_struct *work)
1da177e4	259	{
c1089bdc	260	struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work);
8083c520	261
1da177e4	262	ir_key_poll(ir);
c72ba8e6	263	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval));
1da177e4 LT	264	}
	265
	266	/* ----------------------------------------------------------------------- */
	267
c668f32d	268	static int ir_probe(struct i2c_client client, const struct i2c_device_id id)
1da177e4	269	{
02858eed	270	char *ir_codes = NULL;
9a4cc5ac	271	const char *name = NULL;
62c65031	272	u64 ir_type = IR_TYPE_UNKNOWN;
afd1a0c9	273	struct IR_i2c *ir;
d8b4b582	274	struct rc_dev *rc;
c668f32d JD	275	struct i2c_adapter *adap = client->adapter;
c668f32d JD	276	unsigned short addr = client->addr;
b07b4783	277	int err;
1da177e4	278
674434c6	279	ir = kzalloc(sizeof(struct IR_i2c),GFP_KERNEL);
d8b4b582 DH	280	rc = rc_allocate_device();
d8b4b582 DH	281	if (!ir \|\| !rc) {
b07b4783 DT	282	err = -ENOMEM;
b07b4783 DT	283	goto err_out_free;
b7df3910 DT	284	}
b7df3910 DT	285
c668f32d	286	ir->c = client;
d8b4b582	287	ir->rc = rc;
c72ba8e6	288	ir->polling_interval = DEFAULT_POLLING_INTERVAL;
c668f32d	289	i2c_set_clientdata(client, ir);
d21838dd	290
1da177e4 LT	291	switch(addr) {
	292	case 0x64:
	293	name = "Pixelview";
	294	ir->get_key = get_key_pixelview;
	295	ir_type = IR_TYPE_OTHER;
02858eed	296	ir_codes = RC_MAP_EMPTY;
1da177e4	297	break;
1da177e4	298	case 0x18:
ca39d84d	299	case 0x1f:
1da177e4 LT	300	case 0x1a:
	301	name = "Hauppauge";
	302	ir->get_key = get_key_haup;
	303	ir_type = IR_TYPE_RC5;
bf47e4e4	304	if (hauppauge == 1) {
02858eed	305	ir_codes = RC_MAP_HAUPPAUGE_NEW;
bf47e4e4	306	} else {
02858eed	307	ir_codes = RC_MAP_RC5_TV;
bf47e4e4	308	}
1da177e4 LT	309	break;
1da177e4 LT	310	case 0x30:
d5e52653 MCC	311	name = "KNC One";
	312	ir->get_key = get_key_knc1;
	313	ir_type = IR_TYPE_OTHER;
02858eed	314	ir_codes = RC_MAP_EMPTY;
1da177e4	315	break;
d54d6980	316	case 0x6b:
3c44358c MK	317	name = "FusionHDTV";
3c44358c MK	318	ir->get_key = get_key_fusionhdtv;
d54d6980	319	ir_type = IR_TYPE_RC5;
02858eed	320	ir_codes = RC_MAP_FUSIONHDTV_MCE;
d54d6980	321	break;
cb3bf504 OJ	322	case 0x40:
	323	name = "AVerMedia Cardbus remote";
	324	ir->get_key = get_key_avermedia_cardbus;
	325	ir_type = IR_TYPE_OTHER;
02858eed	326	ir_codes = RC_MAP_AVERMEDIA_CARDBUS;
cb3bf504	327	break;
1da177e4 LT	328	}
1da177e4 LT	329
4d7a2d67 JD	330	/* Let the caller override settings */
	331	if (client->dev.platform_data) {
	332	const struct IR_i2c_init_data *init_data =
	333	client->dev.platform_data;
	334
	335	ir_codes = init_data->ir_codes;
	336	name = init_data->name;
1b6e59e3 AW	337	if (init_data->type)
	338	ir_type = init_data->type;
	339
c72ba8e6 MCC	340	if (init_data->polling_interval)
	341	ir->polling_interval = init_data->polling_interval;
	342
1b6e59e3 AW	343	switch (init_data->internal_get_key_func) {
	344	case IR_KBD_GET_KEY_CUSTOM:
	345	/* The bridge driver provided us its own function */
	346	ir->get_key = init_data->get_key;
	347	break;
	348	case IR_KBD_GET_KEY_PIXELVIEW:
	349	ir->get_key = get_key_pixelview;
	350	break;
1b6e59e3 AW	351	case IR_KBD_GET_KEY_HAUP:
	352	ir->get_key = get_key_haup;
	353	break;
	354	case IR_KBD_GET_KEY_KNC1:
	355	ir->get_key = get_key_knc1;
	356	break;
	357	case IR_KBD_GET_KEY_FUSIONHDTV:
	358	ir->get_key = get_key_fusionhdtv;
	359	break;
	360	case IR_KBD_GET_KEY_HAUP_XVR:
	361	ir->get_key = get_key_haup_xvr;
	362	break;
	363	case IR_KBD_GET_KEY_AVERMEDIA_CARDBUS:
	364	ir->get_key = get_key_avermedia_cardbus;
	365	break;
	366	}
4d7a2d67 JD	367	}
4d7a2d67 JD	368
9a4cc5ac	369	/* Make sure we are all setup before going on */
7ef68e60	370	if (!name \|\| !ir->get_key \|\| !ir_type \|\| !ir_codes) {
d995a187	371	dprintk(1, ": Unsupported device at address 0x%02x\n",
9a4cc5ac JD	372	addr);
	373	err = -ENODEV;
	374	goto err_out_free;
	375	}
	376
ac9cd976	377	/* Sets name */
1df8e986	378	snprintf(ir->name, sizeof(ir->name), "i2c IR (%s)", name);
b07b4783	379	ir->ir_codes = ir_codes;
d5e52653	380
ac9cd976	381	snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0",
c668f32d JD	382	dev_name(&adap->dev),
c668f32d JD	383	dev_name(&client->dev));
ac9cd976	384
1da177e4	385	/* init + register input device */
d8b4b582 DH	386	rc->input_id.bustype = BUS_I2C;
	387	rc->input_name = ir->name;
	388	rc->input_phys = ir->phys;
	389	rc->map_name = ir->ir_codes;
	390	rc->driver_name = MODULE_NAME;
b7df3910	391
d8b4b582	392	err = rc_register_device(rc);
b07b4783	393	if (err)
c668f32d	394	goto err_out_free;
b07b4783	395
727e625c	396	printk(MODULE_NAME ": %s detected at %s [%s]\n",
d8b4b582	397	ir->name, ir->phys, adap->name);
1da177e4 LT	398
1da177e4 LT	399	/* start polling via eventd */
c1089bdc JD	400	INIT_DELAYED_WORK(&ir->work, ir_work);
c1089bdc JD	401	schedule_delayed_work(&ir->work, 0);
1da177e4 LT	402
1da177e4 LT	403	return 0;
b07b4783	404
b07b4783	405	err_out_free:
d8b4b582	406	rc_free_device(rc);
b07b4783 DT	407	kfree(ir);
b07b4783 DT	408	return err;
1da177e4 LT	409	}
1da177e4 LT	410
c668f32d	411	static int ir_remove(struct i2c_client *client)
1da177e4	412	{
4ac97914	413	struct IR_i2c *ir = i2c_get_clientdata(client);
1da177e4 LT	414
1da177e4 LT	415	/* kill outstanding polls */
c1089bdc	416	cancel_delayed_work_sync(&ir->work);
1da177e4	417
c668f32d	418	/* unregister device */
d8b4b582	419	rc_unregister_device(ir->rc);
1da177e4 LT	420
	421	/* free memory */
	422	kfree(ir);
	423	return 0;
	424	}
	425
c668f32d JD	426	static const struct i2c_device_id ir_kbd_id[] = {
	427	/* Generic entry for any IR receiver */
	428	{ "ir_video", 0 },
f5d887ae AW	429	/* IR device specific entries should be added here */
f5d887ae AW	430	{ "ir_rx_z8f0811_haup", 0 },
c668f32d JD	431	{ }
c668f32d JD	432	};
cb3bf504	433
c668f32d JD	434	static struct i2c_driver driver = {
	435	.driver = {
	436	.name = "ir-kbd-i2c",
	437	},
	438	.probe = ir_probe,
	439	.remove = ir_remove,
	440	.id_table = ir_kbd_id,
	441	};
1da177e4 LT	442
	443	/* ----------------------------------------------------------------------- */
	444
	445	MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller");
	446	MODULE_DESCRIPTION("input driver for i2c IR remote controls");
	447	MODULE_LICENSE("GPL");
	448
	449	static int __init ir_init(void)
	450	{
	451	return i2c_add_driver(&driver);
	452	}
	453
	454	static void __exit ir_fini(void)
	455	{
	456	i2c_del_driver(&driver);
	457	}
	458
	459	module_init(ir_init);
	460	module_exit(ir_fini);
	461
	462	/*
	463	* Overrides for Emacs so that we follow Linus's tabbing style.
	464	* ---------------------------------------------------------------------------
	465	* Local variables:
	466	* c-basic-offset: 8
	467	* End:
	468	*/