[deliverable/linux.git] / drivers / media / video / bt866.c

/*
    bt866 - BT866 Digital Video Encoder (Rockwell Part)

    Copyright (C) 1999 Mike Bernson <mike@mlb.org>
    Copyright (C) 1998 Dave Perks <dperks@ibm.net>

    Modifications for LML33/DC10plus unified driver
    Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>

    This code was modify/ported from the saa7111 driver written
    by Dave Perks.

    This code was adapted for the bt866 by Christer Weinigel and ported
    to 2.6 by Martin Samuelsson.

    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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <linux/module.h>
#include <linux/types.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>

MODULE_DESCRIPTION("Brooktree-866 video encoder driver");
MODULE_AUTHOR("Mike Bernson & Dave Perks");
MODULE_LICENSE("GPL");

static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");


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

struct bt866 {
	struct v4l2_subdev sd;
	u8 reg[256];
};

static inline struct bt866 *to_bt866(struct v4l2_subdev *sd)
{
	return container_of(sd, struct bt866, sd);
}

static int bt866_write(struct bt866 *encoder, u8 subaddr, u8 data)
{
	struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd);
	u8 buffer[2];
	int err;

	buffer[0] = subaddr;
	buffer[1] = data;

	encoder->reg[subaddr] = data;

	v4l_dbg(1, debug, client, "write 0x%02x = 0x%02x\n", subaddr, data);

	for (err = 0; err < 3;) {
		if (i2c_master_send(client, buffer, 2) == 2)
			break;
		err++;
		v4l_warn(client, "error #%d writing to 0x%02x\n",
				err, subaddr);
		schedule_timeout_interruptible(msecs_to_jiffies(100));
	}
	if (err == 3) {
		v4l_warn(client, "giving up\n");
		return -1;
	}

	return 0;
}

static int bt866_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
{
	v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);

	/* Only PAL supported by this driver at the moment! */
	if (!(std & V4L2_STD_NTSC))
		return -EINVAL;
	return 0;
}

static int bt866_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
{
	static const __u8 init[] = {
		0xc8, 0xcc, /* CRSCALE */
		0xca, 0x91, /* CBSCALE */
		0xcc, 0x24, /* YC16 | OSDNUM */
		0xda, 0x00, /*  */
		0xdc, 0x24, /* SETMODE | PAL */
		0xde, 0x02, /* EACTIVE */

		/* overlay colors */
		0x70, 0xEB, 0x90, 0x80, 0xB0, 0x80, /* white */
		0x72, 0xA2, 0x92, 0x8E, 0xB2, 0x2C, /* yellow */
		0x74, 0x83, 0x94, 0x2C, 0xB4, 0x9C, /* cyan */
		0x76, 0x70, 0x96, 0x3A, 0xB6, 0x48, /* green */
		0x78, 0x54, 0x98, 0xC6, 0xB8, 0xB8, /* magenta */
		0x7A, 0x41, 0x9A, 0xD4, 0xBA, 0x64, /* red */
		0x7C, 0x23, 0x9C, 0x72, 0xBC, 0xD4, /* blue */
		0x7E, 0x10, 0x9E, 0x80, 0xBE, 0x80, /* black */

		0x60, 0xEB, 0x80, 0x80, 0xc0, 0x80, /* white */
		0x62, 0xA2, 0x82, 0x8E, 0xc2, 0x2C, /* yellow */
		0x64, 0x83, 0x84, 0x2C, 0xc4, 0x9C, /* cyan */
		0x66, 0x70, 0x86, 0x3A, 0xc6, 0x48, /* green */
		0x68, 0x54, 0x88, 0xC6, 0xc8, 0xB8, /* magenta */
		0x6A, 0x41, 0x8A, 0xD4, 0xcA, 0x64, /* red */
		0x6C, 0x23, 0x8C, 0x72, 0xcC, 0xD4, /* blue */
		0x6E, 0x10, 0x8E, 0x80, 0xcE, 0x80, /* black */
	};
	struct bt866 *encoder = to_bt866(sd);
	u8 val;
	int i;

	for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2)
		bt866_write(encoder, init[i], init[i+1]);

	val = encoder->reg[0xdc];

	if (route->input == 0)
		val |= 0x40; /* CBSWAP */
	else
		val &= ~0x40; /* !CBSWAP */

	bt866_write(encoder, 0xdc, val);

	val = encoder->reg[0xcc];
	if (route->input == 2)
		val |= 0x01; /* OSDBAR */
	else
		val &= ~0x01; /* !OSDBAR */
	bt866_write(encoder, 0xcc, val);

	v4l2_dbg(1, debug, sd, "set input %d\n", route->input);

	switch (route->input) {
	case 0:
	case 1:
	case 2:
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

#if 0
/* Code to setup square pixels, might be of some use in the future,
   but is currently unused. */
	val = encoder->reg[0xdc];
	if (*iarg)
		val |= 1; /* SQUARE */
	else
		val &= ~1; /* !SQUARE */
	bt866_write(client, 0xdc, val);
#endif

static int bt866_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT866, 0);
}

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

static const struct v4l2_subdev_core_ops bt866_core_ops = {
	.g_chip_ident = bt866_g_chip_ident,
};

static const struct v4l2_subdev_video_ops bt866_video_ops = {
	.s_std_output = bt866_s_std_output,
	.s_routing = bt866_s_routing,
};

static const struct v4l2_subdev_ops bt866_ops = {
	.core = &bt866_core_ops,
	.video = &bt866_video_ops,
};

static int bt866_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	struct bt866 *encoder;
	struct v4l2_subdev *sd;

	v4l_info(client, "chip found @ 0x%x (%s)\n",
			client->addr << 1, client->adapter->name);

	encoder = kzalloc(sizeof(*encoder), GFP_KERNEL);
	if (encoder == NULL)
		return -ENOMEM;
	sd = &encoder->sd;
	v4l2_i2c_subdev_init(sd, client, &bt866_ops);
	return 0;
}

static int bt866_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	v4l2_device_unregister_subdev(sd);
	kfree(to_bt866(sd));
	return 0;
}

static const struct i2c_device_id bt866_id[] = {
	{ "bt866", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, bt866_id);

static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "bt866",
	.probe = bt866_probe,
	.remove = bt866_remove,
	.id_table = bt866_id,
};
Commit	Line	Data
fbe60daa MS	1	/*
	2	bt866 - BT866 Digital Video Encoder (Rockwell Part)
	3
	4	Copyright (C) 1999 Mike Bernson <mike@mlb.org>
	5	Copyright (C) 1998 Dave Perks <dperks@ibm.net>
	6
	7	Modifications for LML33/DC10plus unified driver
	8	Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
	9
	10	This code was modify/ported from the saa7111 driver written
	11	by Dave Perks.
	12
	13	This code was adapted for the bt866 by Christer Weinigel and ported
	14	to 2.6 by Martin Samuelsson.
	15
	16	This program is free software; you can redistribute it and/or modify
	17	it under the terms of the GNU General Public License as published by
	18	the Free Software Foundation; either version 2 of the License, or
	19	(at your option) any later version.
	20
	21	This program is distributed in the hope that it will be useful,
	22	but WITHOUT ANY WARRANTY; without even the implied warranty of
	23	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	24	GNU General Public License for more details.
	25
	26	You should have received a copy of the GNU General Public License
	27	along with this program; if not, write to the Free Software
	28	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	29	*/
	30
	31	#include <linux/module.h>
fbe60daa	32	#include <linux/types.h>
c18fdcf6 HV	33	#include <linux/ioctl.h>
c18fdcf6 HV	34	#include <asm/uaccess.h>
fbe60daa	35	#include <linux/i2c.h>
c18fdcf6	36	#include <linux/i2c-id.h>
8e4e1d80 HV	37	#include <linux/videodev2.h>
	38	#include <media/v4l2-device.h>
	39	#include <media/v4l2-chip-ident.h>
2d26698e	40	#include <media/v4l2-i2c-drv.h>
fbe60daa	41
c18fdcf6 HV	42	MODULE_DESCRIPTION("Brooktree-866 video encoder driver");
c18fdcf6 HV	43	MODULE_AUTHOR("Mike Bernson & Dave Perks");
fbe60daa MS	44	MODULE_LICENSE("GPL");
fbe60daa MS	45
c18fdcf6 HV	46	static int debug;
	47	module_param(debug, int, 0);
	48	MODULE_PARM_DESC(debug, "Debug level (0-1)");
fbe60daa	49
8e4e1d80	50
fbe60daa MS	51	/* ----------------------------------------------------------------------- */
	52
	53	struct bt866 {
8e4e1d80	54	struct v4l2_subdev sd;
c18fdcf6	55	u8 reg[256];
fbe60daa MS	56	};
fbe60daa MS	57
8e4e1d80	58	static inline struct bt866 to_bt866(struct v4l2_subdev sd)
c18fdcf6	59	{
8e4e1d80 HV	60	return container_of(sd, struct bt866, sd);
	61	}
	62
	63	static int bt866_write(struct bt866 *encoder, u8 subaddr, u8 data)
	64	{
	65	struct i2c_client *client = v4l2_get_subdevdata(&encoder->sd);
c18fdcf6 HV	66	u8 buffer[2];
	67	int err;
	68
	69	buffer[0] = subaddr;
	70	buffer[1] = data;
	71
	72	encoder->reg[subaddr] = data;
	73
	74	v4l_dbg(1, debug, client, "write 0x%02x = 0x%02x\n", subaddr, data);
	75
	76	for (err = 0; err < 3;) {
	77	if (i2c_master_send(client, buffer, 2) == 2)
	78	break;
	79	err++;
	80	v4l_warn(client, "error #%d writing to 0x%02x\n",
	81	err, subaddr);
	82	schedule_timeout_interruptible(msecs_to_jiffies(100));
	83	}
	84	if (err == 3) {
	85	v4l_warn(client, "giving up\n");
	86	return -1;
	87	}
	88
	89	return 0;
	90	}
fbe60daa	91
8e4e1d80	92	static int bt866_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
fbe60daa	93	{
cc5cef8e	94	v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
fbe60daa	95
8e4e1d80 HV	96	/* Only PAL supported by this driver at the moment! */
	97	if (!(std & V4L2_STD_NTSC))
	98	return -EINVAL;
	99	return 0;
	100	}
fbe60daa	101
8e4e1d80 HV	102	static int bt866_s_routing(struct v4l2_subdev sd, const struct v4l2_routing route)
	103	{
	104	static const __u8 init[] = {
	105	0xc8, 0xcc, /* CRSCALE */
	106	0xca, 0x91, /* CBSCALE */
	107	0xcc, 0x24, /* YC16 \| OSDNUM */
	108	0xda, 0x00, /* */
	109	0xdc, 0x24, /* SETMODE \| PAL */
	110	0xde, 0x02, /* EACTIVE */
	111
	112	/* overlay colors */
	113	0x70, 0xEB, 0x90, 0x80, 0xB0, 0x80, /* white */
	114	0x72, 0xA2, 0x92, 0x8E, 0xB2, 0x2C, /* yellow */
	115	0x74, 0x83, 0x94, 0x2C, 0xB4, 0x9C, /* cyan */
	116	0x76, 0x70, 0x96, 0x3A, 0xB6, 0x48, /* green */
	117	0x78, 0x54, 0x98, 0xC6, 0xB8, 0xB8, /* magenta */
	118	0x7A, 0x41, 0x9A, 0xD4, 0xBA, 0x64, /* red */
	119	0x7C, 0x23, 0x9C, 0x72, 0xBC, 0xD4, /* blue */
	120	0x7E, 0x10, 0x9E, 0x80, 0xBE, 0x80, /* black */
	121
	122	0x60, 0xEB, 0x80, 0x80, 0xc0, 0x80, /* white */
	123	0x62, 0xA2, 0x82, 0x8E, 0xc2, 0x2C, /* yellow */
	124	0x64, 0x83, 0x84, 0x2C, 0xc4, 0x9C, /* cyan */
	125	0x66, 0x70, 0x86, 0x3A, 0xc6, 0x48, /* green */
	126	0x68, 0x54, 0x88, 0xC6, 0xc8, 0xB8, /* magenta */
	127	0x6A, 0x41, 0x8A, 0xD4, 0xcA, 0x64, /* red */
	128	0x6C, 0x23, 0x8C, 0x72, 0xcC, 0xD4, /* blue */
	129	0x6E, 0x10, 0x8E, 0x80, 0xcE, 0x80, /* black */
	130	};
	131	struct bt866 *encoder = to_bt866(sd);
	132	u8 val;
	133	int i;
	134
	135	for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2)
	136	bt866_write(encoder, init[i], init[i+1]);
	137
	138	val = encoder->reg[0xdc];
	139
	140	if (route->input == 0)
	141	val \|= 0x40; /* CBSWAP */
	142	else
	143	val &= ~0x40; /* !CBSWAP */
	144
	145	bt866_write(encoder, 0xdc, val);
	146
	147	val = encoder->reg[0xcc];
	148	if (route->input == 2)
	149	val \|= 0x01; /* OSDBAR */
	150	else
	151	val &= ~0x01; /* !OSDBAR */
	152	bt866_write(encoder, 0xcc, val);
	153
	154	v4l2_dbg(1, debug, sd, "set input %d\n", route->input);
	155
	156	switch (route->input) {
	157	case 0:
	158	case 1:
	159	case 2:
c18fdcf6	160	break;
8e4e1d80 HV	161	default:
8e4e1d80 HV	162	return -EINVAL;
fbe60daa	163	}
8e4e1d80 HV	164	return 0;
8e4e1d80 HV	165	}
fbe60daa	166
8e4e1d80 HV	167	#if 0
	168	/* Code to setup square pixels, might be of some use in the future,
	169	but is currently unused. */
	170	val = encoder->reg[0xdc];
	171	if (*iarg)
	172	val \|= 1; /* SQUARE */
	173	else
	174	val &= ~1; /* !SQUARE */
	175	bt866_write(client, 0xdc, val);
	176	#endif
	177
	178	static int bt866_g_chip_ident(struct v4l2_subdev sd, struct v4l2_dbg_chip_ident chip)
	179	{
	180	struct i2c_client *client = v4l2_get_subdevdata(sd);
fbe60daa	181
8e4e1d80 HV	182	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_BT866, 0);
8e4e1d80 HV	183	}
fbe60daa	184
8e4e1d80	185	/* ----------------------------------------------------------------------- */
fbe60daa	186
8e4e1d80 HV	187	static const struct v4l2_subdev_core_ops bt866_core_ops = {
	188	.g_chip_ident = bt866_g_chip_ident,
	189	};
fbe60daa	190
8e4e1d80 HV	191	static const struct v4l2_subdev_video_ops bt866_video_ops = {
	192	.s_std_output = bt866_s_std_output,
	193	.s_routing = bt866_s_routing,
	194	};
fbe60daa	195
8e4e1d80 HV	196	static const struct v4l2_subdev_ops bt866_ops = {
	197	.core = &bt866_core_ops,
	198	.video = &bt866_video_ops,
	199	};
fbe60daa	200
c18fdcf6 HV	201	static int bt866_probe(struct i2c_client *client,
c18fdcf6 HV	202	const struct i2c_device_id *id)
fbe60daa MS	203	{
fbe60daa MS	204	struct bt866 *encoder;
8e4e1d80	205	struct v4l2_subdev *sd;
fbe60daa	206
c18fdcf6 HV	207	v4l_info(client, "chip found @ 0x%x (%s)\n",
c18fdcf6 HV	208	client->addr << 1, client->adapter->name);
fbe60daa MS	209
fbe60daa MS	210	encoder = kzalloc(sizeof(*encoder), GFP_KERNEL);
c18fdcf6	211	if (encoder == NULL)
fbe60daa	212	return -ENOMEM;
8e4e1d80 HV	213	sd = &encoder->sd;
8e4e1d80 HV	214	v4l2_i2c_subdev_init(sd, client, &bt866_ops);
fbe60daa MS	215	return 0;
	216	}
	217
c18fdcf6	218	static int bt866_remove(struct i2c_client *client)
fbe60daa	219	{
8e4e1d80 HV	220	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	221
	222	v4l2_device_unregister_subdev(sd);
	223	kfree(to_bt866(sd));
fbe60daa MS	224	return 0;
	225	}
	226
c18fdcf6 HV	227	static const struct i2c_device_id bt866_id[] = {
	228	{ "bt866", 0 },
	229	{ }
	230	};
	231	MODULE_DEVICE_TABLE(i2c, bt866_id);
	232
	233	static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	234	.name = "bt866",
c18fdcf6 HV	235	.probe = bt866_probe,
c18fdcf6 HV	236	.remove = bt866_remove,
c18fdcf6 HV	237	.id_table = bt866_id,
c18fdcf6 HV	238	};