[deliverable/linux.git] / drivers / media / i2c / upd64031a.c

/*
 * upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan
 *
 * 2003 by T.Adachi <tadachi@tadachi-net.com>
 * 2003 by Takeru KOMORIYA <komoriya@paken.org>
 * 2006 by Hans Verkuil <hverkuil@xs4all.nl>
 *
 * 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/kernel.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/i2c/upd64031a.h>

/* --------------------- read registers functions define -------------------- */

/* bit masks */
#define GR_MODE_MASK              0xc0
#define DIRECT_3DYCS_CONNECT_MASK 0xc0
#define SYNC_CIRCUIT_MASK         0xa0

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

MODULE_DESCRIPTION("uPD64031A driver");
MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
MODULE_LICENSE("GPL");

static int debug;
module_param(debug, int, 0644);

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


enum {
	R00 = 0, R01, R02, R03, R04,
	R05, R06, R07, R08, R09,
	R0A, R0B, R0C, R0D, R0E, R0F,
	/* unused registers
	 R10, R11, R12, R13, R14,
	 R15, R16, R17,
	 */
	TOT_REGS
};

struct upd64031a_state {
	struct v4l2_subdev sd;
	u8 regs[TOT_REGS];
	u8 gr_mode;
	u8 direct_3dycs_connect;
	u8 ext_comp_sync;
	u8 ext_vert_sync;
};

static inline struct upd64031a_state *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct upd64031a_state, sd);
}

static u8 upd64031a_init[] = {
	0x00, 0xb8, 0x48, 0xd2, 0xe6,
	0x03, 0x10, 0x0b, 0xaf, 0x7f,
	0x00, 0x00, 0x1d, 0x5e, 0x00,
	0xd0
};

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

static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	u8 buf[2];

	if (reg >= sizeof(buf))
		return 0xff;
	i2c_master_recv(client, buf, 2);
	return buf[reg];
}

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

static void upd64031a_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	u8 buf[2];

	buf[0] = reg;
	buf[1] = val;
	v4l2_dbg(1, debug, sd, "write reg: %02X val: %02X\n", reg, val);
	if (i2c_master_send(client, buf, 2) != 2)
		v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val);
}

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

/* The input changed due to new input or channel changed */
static int upd64031a_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
{
	struct upd64031a_state *state = to_state(sd);
	u8 reg = state->regs[R00];

	v4l2_dbg(1, debug, sd, "changed input or channel\n");
	upd64031a_write(sd, R00, reg | 0x10);
	upd64031a_write(sd, R00, reg & ~0x10);
	return 0;
}

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

static int upd64031a_s_routing(struct v4l2_subdev *sd,
			       u32 input, u32 output, u32 config)
{
	struct upd64031a_state *state = to_state(sd);
	u8 r00, r05, r08;

	state->gr_mode = (input & 3) << 6;
	state->direct_3dycs_connect = (input & 0xc) << 4;
	state->ext_comp_sync =
		(input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
	state->ext_vert_sync =
		(input & UPD64031A_VERTICAL_EXTERNAL) << 2;
	r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode;
	r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) |
		state->ext_comp_sync | state->ext_vert_sync;
	r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) |
		state->direct_3dycs_connect;
	upd64031a_write(sd, R00, r00);
	upd64031a_write(sd, R05, r05);
	upd64031a_write(sd, R08, r08);
	return upd64031a_s_frequency(sd, NULL);
}

static int upd64031a_log_status(struct v4l2_subdev *sd)
{
	v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n",
			upd64031a_read(sd, 0), upd64031a_read(sd, 1));
	return 0;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
{
	reg->val = upd64031a_read(sd, reg->reg & 0xff);
	reg->size = 1;
	return 0;
}

static int upd64031a_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
{
	upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff);
	return 0;
}
#endif

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

static const struct v4l2_subdev_core_ops upd64031a_core_ops = {
	.log_status = upd64031a_log_status,
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.g_register = upd64031a_g_register,
	.s_register = upd64031a_s_register,
#endif
};

static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = {
	.s_frequency = upd64031a_s_frequency,
};

static const struct v4l2_subdev_video_ops upd64031a_video_ops = {
	.s_routing = upd64031a_s_routing,
};

static const struct v4l2_subdev_ops upd64031a_ops = {
	.core = &upd64031a_core_ops,
	.tuner = &upd64031a_tuner_ops,
	.video = &upd64031a_video_ops,
};

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

/* i2c implementation */

static int upd64031a_probe(struct i2c_client *client,
			   const struct i2c_device_id *id)
{
	struct upd64031a_state *state;
	struct v4l2_subdev *sd;
	int i;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -EIO;

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

	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
	if (state == NULL)
		return -ENOMEM;
	sd = &state->sd;
	v4l2_i2c_subdev_init(sd, client, &upd64031a_ops);
	memcpy(state->regs, upd64031a_init, sizeof(state->regs));
	state->gr_mode = UPD64031A_GR_ON << 6;
	state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4;
	state->ext_comp_sync = state->ext_vert_sync = 0;
	for (i = 0; i < TOT_REGS; i++)
		upd64031a_write(sd, i, state->regs[i]);
	return 0;
}

static int upd64031a_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	v4l2_device_unregister_subdev(sd);
	return 0;
}

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

static const struct i2c_device_id upd64031a_id[] = {
	{ "upd64031a", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, upd64031a_id);

static struct i2c_driver upd64031a_driver = {
	.driver = {
		.name	= "upd64031a",
	},
	.probe		= upd64031a_probe,
	.remove		= upd64031a_remove,
	.id_table	= upd64031a_id,
};

module_i2c_driver(upd64031a_driver);
Commit	Line	Data
add953ce HV	1	/*
	2	* upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan
	3	*
	4	* 2003 by T.Adachi <tadachi@tadachi-net.com>
	5	* 2003 by Takeru KOMORIYA <komoriya@paken.org>
	6	* 2006 by Hans Verkuil <hverkuil@xs4all.nl>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21	*/
	22
	23
add953ce HV	24	#include <linux/module.h>
	25	#include <linux/kernel.h>
	26	#include <linux/i2c.h>
	27	#include <linux/videodev2.h>
5a0e3ad6	28	#include <linux/slab.h>
09abd506	29	#include <media/v4l2-device.h>
b5dcee22	30	#include <media/i2c/upd64031a.h>
add953ce	31
79f998a7	32	/* --------------------- read registers functions define -------------------- */
add953ce HV	33
	34	/* bit masks */
	35	#define GR_MODE_MASK 0xc0
	36	#define DIRECT_3DYCS_CONNECT_MASK 0xc0
	37	#define SYNC_CIRCUIT_MASK 0xa0
	38
79f998a7	39	/* -------------------------------------------------------------------------- */
add953ce HV	40
	41	MODULE_DESCRIPTION("uPD64031A driver");
	42	MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
	43	MODULE_LICENSE("GPL");
	44
79f998a7	45	static int debug;
add953ce HV	46	module_param(debug, int, 0644);
	47
	48	MODULE_PARM_DESC(debug, "Debug level (0-1)");
	49
add953ce HV	50
	51	enum {
	52	R00 = 0, R01, R02, R03, R04,
	53	R05, R06, R07, R08, R09,
	54	R0A, R0B, R0C, R0D, R0E, R0F,
	55	/* unused registers
	56	R10, R11, R12, R13, R14,
	57	R15, R16, R17,
	58	*/
	59	TOT_REGS
	60	};
	61
	62	struct upd64031a_state {
09abd506	63	struct v4l2_subdev sd;
add953ce HV	64	u8 regs[TOT_REGS];
	65	u8 gr_mode;
	66	u8 direct_3dycs_connect;
	67	u8 ext_comp_sync;
	68	u8 ext_vert_sync;
	69	};
	70
09abd506 HV	71	static inline struct upd64031a_state to_state(struct v4l2_subdev sd)
	72	{
	73	return container_of(sd, struct upd64031a_state, sd);
	74	}
	75
add953ce HV	76	static u8 upd64031a_init[] = {
	77	0x00, 0xb8, 0x48, 0xd2, 0xe6,
	78	0x03, 0x10, 0x0b, 0xaf, 0x7f,
	79	0x00, 0x00, 0x1d, 0x5e, 0x00,
	80	0xd0
	81	};
	82
	83	/* ------------------------------------------------------------------------ */
	84
09abd506	85	static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg)
add953ce	86	{
09abd506	87	struct i2c_client *client = v4l2_get_subdevdata(sd);
add953ce HV	88	u8 buf[2];
	89
	90	if (reg >= sizeof(buf))
	91	return 0xff;
	92	i2c_master_recv(client, buf, 2);
	93	return buf[reg];
	94	}
	95
	96	/* ------------------------------------------------------------------------ */
	97
09abd506	98	static void upd64031a_write(struct v4l2_subdev *sd, u8 reg, u8 val)
add953ce	99	{
09abd506	100	struct i2c_client *client = v4l2_get_subdevdata(sd);
add953ce HV	101	u8 buf[2];
	102
	103	buf[0] = reg;
	104	buf[1] = val;
09abd506	105	v4l2_dbg(1, debug, sd, "write reg: %02X val: %02X\n", reg, val);
add953ce	106	if (i2c_master_send(client, buf, 2) != 2)
09abd506	107	v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val);
add953ce HV	108	}
	109
	110	/* ------------------------------------------------------------------------ */
	111
	112	/* The input changed due to new input or channel changed */
b530a447	113	static int upd64031a_s_frequency(struct v4l2_subdev sd, const struct v4l2_frequency freq)
add953ce	114	{
09abd506	115	struct upd64031a_state *state = to_state(sd);
add953ce HV	116	u8 reg = state->regs[R00];
add953ce HV	117
09abd506 HV	118	v4l2_dbg(1, debug, sd, "changed input or channel\n");
	119	upd64031a_write(sd, R00, reg \| 0x10);
	120	upd64031a_write(sd, R00, reg & ~0x10);
	121	return 0;
add953ce HV	122	}
	123
	124	/* ------------------------------------------------------------------------ */
	125
5325b427 HV	126	static int upd64031a_s_routing(struct v4l2_subdev *sd,
5325b427 HV	127	u32 input, u32 output, u32 config)
09abd506 HV	128	{
	129	struct upd64031a_state *state = to_state(sd);
	130	u8 r00, r05, r08;
	131
5325b427 HV	132	state->gr_mode = (input & 3) << 6;
5325b427 HV	133	state->direct_3dycs_connect = (input & 0xc) << 4;
09abd506	134	state->ext_comp_sync =
5325b427	135	(input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
09abd506	136	state->ext_vert_sync =
5325b427	137	(input & UPD64031A_VERTICAL_EXTERNAL) << 2;
09abd506 HV	138	r00 = (state->regs[R00] & ~GR_MODE_MASK) \| state->gr_mode;
	139	r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) \|
	140	state->ext_comp_sync \| state->ext_vert_sync;
	141	r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) \|
	142	state->direct_3dycs_connect;
	143	upd64031a_write(sd, R00, r00);
	144	upd64031a_write(sd, R05, r05);
	145	upd64031a_write(sd, R08, r08);
	146	return upd64031a_s_frequency(sd, NULL);
	147	}
	148
09abd506 HV	149	static int upd64031a_log_status(struct v4l2_subdev *sd)
	150	{
	151	v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n",
	152	upd64031a_read(sd, 0), upd64031a_read(sd, 1));
	153	return 0;
	154	}
	155
	156	#ifdef CONFIG_VIDEO_ADV_DEBUG
aecde8b5	157	static int upd64031a_g_register(struct v4l2_subdev sd, struct v4l2_dbg_register reg)
09abd506	158	{
09abd506	159	reg->val = upd64031a_read(sd, reg->reg & 0xff);
aecde8b5	160	reg->size = 1;
09abd506 HV	161	return 0;
	162	}
	163
977ba3b1	164	static int upd64031a_s_register(struct v4l2_subdev sd, const struct v4l2_dbg_register reg)
09abd506	165	{
09abd506 HV	166	upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff);
	167	return 0;
	168	}
	169	#endif
	170
09abd506	171	/* ----------------------------------------------------------------------- */
add953ce	172
09abd506 HV	173	static const struct v4l2_subdev_core_ops upd64031a_core_ops = {
09abd506 HV	174	.log_status = upd64031a_log_status,
add953ce	175	#ifdef CONFIG_VIDEO_ADV_DEBUG
09abd506 HV	176	.g_register = upd64031a_g_register,
09abd506 HV	177	.s_register = upd64031a_s_register,
add953ce	178	#endif
09abd506	179	};
add953ce	180
09abd506 HV	181	static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = {
	182	.s_frequency = upd64031a_s_frequency,
	183	};
74cab31c	184
09abd506 HV	185	static const struct v4l2_subdev_video_ops upd64031a_video_ops = {
	186	.s_routing = upd64031a_s_routing,
	187	};
	188
	189	static const struct v4l2_subdev_ops upd64031a_ops = {
	190	.core = &upd64031a_core_ops,
	191	.tuner = &upd64031a_tuner_ops,
	192	.video = &upd64031a_video_ops,
	193	};
add953ce HV	194
	195	/* ------------------------------------------------------------------------ */
	196
	197	/* i2c implementation */
	198
d2653e92 JD	199	static int upd64031a_probe(struct i2c_client *client,
d2653e92 JD	200	const struct i2c_device_id *id)
add953ce	201	{
add953ce	202	struct upd64031a_state *state;
09abd506	203	struct v4l2_subdev *sd;
add953ce HV	204	int i;
add953ce HV	205
2b14e031	206	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
188f3457	207	return -EIO;
add953ce	208
79f998a7 HV	209	v4l_info(client, "chip found @ 0x%x (%s)\n",
79f998a7 HV	210	client->addr << 1, client->adapter->name);
add953ce	211
c02b211d	212	state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
79f998a7	213	if (state == NULL)
add953ce	214	return -ENOMEM;
09abd506 HV	215	sd = &state->sd;
09abd506 HV	216	v4l2_i2c_subdev_init(sd, client, &upd64031a_ops);
add953ce HV	217	memcpy(state->regs, upd64031a_init, sizeof(state->regs));
	218	state->gr_mode = UPD64031A_GR_ON << 6;
	219	state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4;
	220	state->ext_comp_sync = state->ext_vert_sync = 0;
79f998a7	221	for (i = 0; i < TOT_REGS; i++)
09abd506	222	upd64031a_write(sd, i, state->regs[i]);
add953ce HV	223	return 0;
	224	}
	225
2b14e031	226	static int upd64031a_remove(struct i2c_client *client)
add953ce	227	{
09abd506 HV	228	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	229
	230	v4l2_device_unregister_subdev(sd);
add953ce HV	231	return 0;
	232	}
	233
	234	/* ----------------------------------------------------------------------- */
	235
af294867 JD	236	static const struct i2c_device_id upd64031a_id[] = {
	237	{ "upd64031a", 0 },
	238	{ }
	239	};
	240	MODULE_DEVICE_TABLE(i2c, upd64031a_id);
2b14e031	241
962961ef HV	242	static struct i2c_driver upd64031a_driver = {
962961ef HV	243	.driver = {
962961ef HV	244	.name = "upd64031a",
	245	},
	246	.probe = upd64031a_probe,
	247	.remove = upd64031a_remove,
	248	.id_table = upd64031a_id,
add953ce	249	};
962961ef	250
c6e8d86f	251	module_i2c_driver(upd64031a_driver);