[deliverable/linux.git] / drivers / media / video / upd64083.c

/*
 * upd6408x - NEC Electronics 3-Dimensional Y/C separation driver
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>
#include <media/upd64083.h>

MODULE_DESCRIPTION("uPD64083 driver");
MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
MODULE_LICENSE("GPL");

static int debug = 0;
module_param(debug, bool, 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,
	R10, R11, R12, R13, R14,
	R15, R16,
	TOT_REGS
};

struct upd64083_state {
	u8 mode;
	u8 ext_y_adc;
	u8 regs[TOT_REGS];
};

/* Initial values when used in combination with the
   NEC upd64031a ghost reduction chip. */
static u8 upd64083_init[] = {
	0x1f, 0x01, 0xa0, 0x2d, 0x29,  /* we use EXCSS=0 */
	0x36, 0xdd, 0x05, 0x56, 0x48,
	0x00, 0x3a, 0xa0, 0x05, 0x08,
	0x44, 0x60, 0x08, 0x52, 0xf8,
	0x53, 0x60, 0x10
};

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

static void upd64083_log_status(struct i2c_client *client)
{
	u8 buf[7];

	i2c_master_recv(client, buf, 7);
	v4l_info(client, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x "
		      "SA04=%02x SA05=%02x SA06=%02x\n",
		buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
}

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

static void upd64083_write(struct i2c_client *client, u8 reg, u8 val)
{
	u8 buf[2];

	buf[0] = reg;
	buf[1] = val;
	v4l_dbg(1, debug, client, "writing reg addr: %02x val: %02x\n", reg, val);
	if (i2c_master_send(client, buf, 2) != 2)
		v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val);
}

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

#ifdef CONFIG_VIDEO_ADV_DEBUG
static u8 upd64083_read(struct i2c_client *client, u8 reg)
{
	u8 buf[7];

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

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

static int upd64083_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
	struct upd64083_state *state = i2c_get_clientdata(client);
	struct v4l2_routing *route = arg;

	switch (cmd) {
	case VIDIOC_INT_G_VIDEO_ROUTING:
		route->input = (state->mode >> 6) | (state->ext_y_adc >> 3);
		route->output = 0;
		break;

	case VIDIOC_INT_S_VIDEO_ROUTING:
	{
		u8 r00, r02;

		if (route->input > 7 || (route->input & 6) == 6)
			return -EINVAL;
		state->mode = (route->input & 3) << 6;
		state->ext_y_adc = (route->input & UPD64083_EXT_Y_ADC) << 3;
		r00 = (state->regs[R00] & ~(3 << 6)) | state->mode;
		r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc;
		upd64083_write(client, R00, r00);
		upd64083_write(client, R02, r02);
		break;
	}

	case VIDIOC_LOG_STATUS:
		upd64083_log_status(client);
		break;

#ifdef CONFIG_VIDEO_ADV_DEBUG
	case VIDIOC_DBG_G_REGISTER:
	case VIDIOC_DBG_S_REGISTER:
	{
		struct v4l2_register *reg = arg;

		if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
			return -EINVAL;
		if (!capable(CAP_SYS_ADMIN))
			return -EPERM;
		if (cmd == VIDIOC_DBG_G_REGISTER)
			reg->val = upd64083_read(client, reg->reg & 0xff);
		else
			upd64083_write(client, reg->reg & 0xff, reg->val & 0xff);
		break;
	}
#endif

	case VIDIOC_G_CHIP_IDENT:
		return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_UPD64083, 0);

	default:
		break;
	}

	return 0;
}

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

/* i2c implementation */

static int upd64083_probe(struct i2c_client *client)
{
	struct upd64083_state *state;
	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 = kmalloc(sizeof(struct upd64083_state), GFP_KERNEL);
	if (state == NULL) {
		return -ENOMEM;
	}
	i2c_set_clientdata(client, state);
	/* Initially assume that a ghost reduction chip is present */
	state->mode = 0;  /* YCS mode */
	state->ext_y_adc = (1 << 5);
	memcpy(state->regs, upd64083_init, TOT_REGS);
	for (i = 0; i < TOT_REGS; i++) {
		upd64083_write(client, i, state->regs[i]);
	}
	return 0;
}

static int upd64083_remove(struct i2c_client *client)
{
	kfree(i2c_get_clientdata(client));
	return 0;
}

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


static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "upd64083",
	.driverid = I2C_DRIVERID_UPD64083,
	.command = upd64083_command,
	.probe = upd64083_probe,
	.remove = upd64083_remove,
};
Commit	Line	Data
add953ce HV	1	/*
	2	* upd6408x - NEC Electronics 3-Dimensional Y/C separation driver
	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
	9	* modify it under the terms of the GNU General Public License
	10	* as published by the Free Software Foundation; either version 2
	11	* of the License, or (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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	21	*/
	22
	23	#include <linux/version.h>
	24	#include <linux/module.h>
	25	#include <linux/kernel.h>
	26	#include <linux/i2c.h>
	27	#include <linux/videodev2.h>
	28	#include <media/v4l2-common.h>
74cab31c	29	#include <media/v4l2-chip-ident.h>
f69d419a	30	#include <media/v4l2-i2c-drv.h>
add953ce HV	31	#include <media/upd64083.h>
	32
	33	MODULE_DESCRIPTION("uPD64083 driver");
	34	MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
	35	MODULE_LICENSE("GPL");
	36
	37	static int debug = 0;
	38	module_param(debug, bool, 0644);
	39
	40	MODULE_PARM_DESC(debug, "Debug level (0-1)");
	41
add953ce HV	42
	43	enum {
	44	R00 = 0, R01, R02, R03, R04,
	45	R05, R06, R07, R08, R09,
	46	R0A, R0B, R0C, R0D, R0E, R0F,
	47	R10, R11, R12, R13, R14,
	48	R15, R16,
	49	TOT_REGS
	50	};
	51
	52	struct upd64083_state {
	53	u8 mode;
	54	u8 ext_y_adc;
	55	u8 regs[TOT_REGS];
	56	};
	57
	58	/* Initial values when used in combination with the
	59	NEC upd64031a ghost reduction chip. */
	60	static u8 upd64083_init[] = {
	61	0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */
	62	0x36, 0xdd, 0x05, 0x56, 0x48,
	63	0x00, 0x3a, 0xa0, 0x05, 0x08,
	64	0x44, 0x60, 0x08, 0x52, 0xf8,
	65	0x53, 0x60, 0x10
	66	};
	67
	68	/* ------------------------------------------------------------------------ */
	69
	70	static void upd64083_log_status(struct i2c_client *client)
	71	{
	72	u8 buf[7];
	73
	74	i2c_master_recv(client, buf, 7);
	75	v4l_info(client, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x "
	76	"SA04=%02x SA05=%02x SA06=%02x\n",
	77	buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
	78	}
	79
	80	/* ------------------------------------------------------------------------ */
	81
	82	static void upd64083_write(struct i2c_client *client, u8 reg, u8 val)
	83	{
	84	u8 buf[2];
	85
	86	buf[0] = reg;
	87	buf[1] = val;
	88	v4l_dbg(1, debug, client, "writing reg addr: %02x val: %02x\n", reg, val);
	89	if (i2c_master_send(client, buf, 2) != 2)
	90	v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val);
	91	}
	92
	93	/* ------------------------------------------------------------------------ */
	94
	95	#ifdef CONFIG_VIDEO_ADV_DEBUG
	96	static u8 upd64083_read(struct i2c_client *client, u8 reg)
	97	{
	98	u8 buf[7];
	99
	100	if (reg >= sizeof(buf))
	101	return 0xff;
	102	i2c_master_recv(client, buf, sizeof(buf));
	103	return buf[reg];
	104	}
	105	#endif
106
107	/* ------------------------------------------------------------------------ */
108
109	static int upd64083_command(struct i2c_client client, unsigned int cmd, void arg)
110	{
111	struct upd64083_state *state = i2c_get_clientdata(client);
112	struct v4l2_routing *route = arg;
113
114	switch (cmd) {
115	case VIDIOC_INT_G_VIDEO_ROUTING:
116	route->input = (state->mode >> 6) \| (state->ext_y_adc >> 3);
117	route->output = 0;
118	break;
119
120	case VIDIOC_INT_S_VIDEO_ROUTING:
121	{
122	u8 r00, r02;
123
124	if (route->input > 7 \|\| (route->input & 6) == 6)
125	return -EINVAL;
126	state->mode = (route->input & 3) << 6;
127	state->ext_y_adc = (route->input & UPD64083_EXT_Y_ADC) << 3;
128	r00 = (state->regs[R00] & ~(3 << 6)) \| state->mode;
129	r02 = (state->regs[R02] & ~(1 << 5)) \| state->ext_y_adc;
130	upd64083_write(client, R00, r00);
131	upd64083_write(client, R02, r02);
132	break;
133	}
134
135	case VIDIOC_LOG_STATUS:
136	upd64083_log_status(client);
137	break;
138
139	#ifdef CONFIG_VIDEO_ADV_DEBUG
52ebc763	140	case VIDIOC_DBG_G_REGISTER:
52ebc763	141	case VIDIOC_DBG_S_REGISTER:
add953ce HV	142	{
add953ce HV	143	struct v4l2_register *reg = arg;
add953ce	144
f3d092b8	145	if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
add953ce HV	146	return -EINVAL;
	147	if (!capable(CAP_SYS_ADMIN))
	148	return -EPERM;
62d50add TP	149	if (cmd == VIDIOC_DBG_G_REGISTER)
	150	reg->val = upd64083_read(client, reg->reg & 0xff);
	151	else
	152	upd64083_write(client, reg->reg & 0xff, reg->val & 0xff);
add953ce HV	153	break;
	154	}
	155	#endif
74cab31c HV	156
	157	case VIDIOC_G_CHIP_IDENT:
	158	return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_UPD64083, 0);
	159
add953ce HV	160	default:
	161	break;
	162	}
	163
	164	return 0;
	165	}
	166
	167	/* ------------------------------------------------------------------------ */
	168
	169	/* i2c implementation */
	170
26666977	171	static int upd64083_probe(struct i2c_client *client)
add953ce	172	{
add953ce HV	173	struct upd64083_state *state;
	174	int i;
	175
26666977	176	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
188f3457	177	return -EIO;
add953ce	178
26666977	179	v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name);
add953ce HV	180
	181	state = kmalloc(sizeof(struct upd64083_state), GFP_KERNEL);
	182	if (state == NULL) {
add953ce HV	183	return -ENOMEM;
	184	}
	185	i2c_set_clientdata(client, state);
	186	/* Initially assume that a ghost reduction chip is present */
	187	state->mode = 0; /* YCS mode */
	188	state->ext_y_adc = (1 << 5);
	189	memcpy(state->regs, upd64083_init, TOT_REGS);
	190	for (i = 0; i < TOT_REGS; i++) {
	191	upd64083_write(client, i, state->regs[i]);
	192	}
add953ce HV	193	return 0;
	194	}
	195
26666977	196	static int upd64083_remove(struct i2c_client *client)
add953ce	197	{
26666977	198	kfree(i2c_get_clientdata(client));
add953ce HV	199	return 0;
	200	}
	201
	202	/* ----------------------------------------------------------------------- */
	203
26666977 HV	204
	205	static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	206	.name = "upd64083",
	207	.driverid = I2C_DRIVERID_UPD64083,
add953ce	208	.command = upd64083_command,
26666977 HV	209	.probe = upd64083_probe,
26666977 HV	210	.remove = upd64083_remove,
add953ce	211	};