[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / adv7180.c

/*
 * adv7180.c Analog Devices ADV7180 video decoder driver
 * Copyright (c) 2009 Intel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * 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/init.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <media/v4l2-ioctl.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>

#define DRIVER_NAME "adv7180"

#define ADV7180_INPUT_CONTROL_REG			0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM	0x00
#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM	0x20
#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM	0x30
#define ADV7180_INPUT_CONTROL_NTSC_J			0x40
#define ADV7180_INPUT_CONTROL_NTSC_M			0x50
#define ADV7180_INPUT_CONTROL_PAL60			0x60
#define ADV7180_INPUT_CONTROL_NTSC_443			0x70
#define ADV7180_INPUT_CONTROL_PAL_BG			0x80
#define ADV7180_INPUT_CONTROL_PAL_N			0x90
#define ADV7180_INPUT_CONTROL_PAL_M			0xa0
#define ADV7180_INPUT_CONTROL_PAL_M_PED			0xb0
#define ADV7180_INPUT_CONTROL_PAL_COMB_N		0xc0
#define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED		0xd0
#define ADV7180_INPUT_CONTROL_PAL_SECAM			0xe0
#define ADV7180_INPUT_CONTROL_PAL_SECAM_PED		0xf0

#define ADV7180_AUTODETECT_ENABLE_REG	0x07
#define ADV7180_AUTODETECT_DEFAULT	0x7f


#define ADV7180_STATUS1_REG				0x10
#define ADV7180_STATUS1_IN_LOCK		0x01
#define ADV7180_STATUS1_AUTOD_MASK	0x70
#define ADV7180_STATUS1_AUTOD_NTSM_M_J	0x00
#define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
#define ADV7180_STATUS1_AUTOD_PAL_M	0x20
#define ADV7180_STATUS1_AUTOD_PAL_60	0x30
#define ADV7180_STATUS1_AUTOD_PAL_B_G	0x40
#define ADV7180_STATUS1_AUTOD_SECAM	0x50
#define ADV7180_STATUS1_AUTOD_PAL_COMB	0x60
#define ADV7180_STATUS1_AUTOD_SECAM_525	0x70

#define ADV7180_IDENT_REG 0x11
#define ADV7180_ID_7180 0x18


struct adv7180_state {
	struct v4l2_subdev sd;
};

static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
{
	switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
	case ADV7180_STATUS1_AUTOD_NTSM_M_J:
		return V4L2_STD_NTSC;
	case ADV7180_STATUS1_AUTOD_NTSC_4_43:
		return V4L2_STD_NTSC_443;
	case ADV7180_STATUS1_AUTOD_PAL_M:
		return V4L2_STD_PAL_M;
	case ADV7180_STATUS1_AUTOD_PAL_60:
		return V4L2_STD_PAL_60;
	case ADV7180_STATUS1_AUTOD_PAL_B_G:
		return V4L2_STD_PAL;
	case ADV7180_STATUS1_AUTOD_SECAM:
		return V4L2_STD_SECAM;
	case ADV7180_STATUS1_AUTOD_PAL_COMB:
		return V4L2_STD_PAL_Nc | V4L2_STD_PAL_N;
	case ADV7180_STATUS1_AUTOD_SECAM_525:
		return V4L2_STD_SECAM;
	default:
		return V4L2_STD_UNKNOWN;
	}
}

static u32 adv7180_status_to_v4l2(u8 status1)
{
	if (!(status1 & ADV7180_STATUS1_IN_LOCK))
		return V4L2_IN_ST_NO_SIGNAL;

	return 0;
}

static int __adv7180_status(struct i2c_client *client, u32 *status,
	v4l2_std_id *std)
{
	int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);

	if (status1 < 0)
		return status1;

	if (status)
		*status = adv7180_status_to_v4l2(status1);
	if (std)
		*std = adv7180_std_to_v4l2(status1);

	return 0;
}

static inline struct adv7180_state *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct adv7180_state, sd);
}

static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
	return __adv7180_status(v4l2_get_subdevdata(sd), NULL, std);
}

static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
	return __adv7180_status(v4l2_get_subdevdata(sd), status, NULL);
}

static int adv7180_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_ADV7180, 0);
}

static const struct v4l2_subdev_video_ops adv7180_video_ops = {
	.querystd = adv7180_querystd,
	.g_input_status = adv7180_g_input_status,
};

static const struct v4l2_subdev_core_ops adv7180_core_ops = {
	.g_chip_ident = adv7180_g_chip_ident,
};

static const struct v4l2_subdev_ops adv7180_ops = {
	.core = &adv7180_core_ops,
	.video = &adv7180_video_ops,
};

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */

static int adv7180_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	struct adv7180_state *state;
	struct v4l2_subdev *sd;
	int ret;

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -EIO;

	v4l_info(client, "chip found @ 0x%02x (%s)\n",
			client->addr << 1, client->adapter->name);

	state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
	if (state == NULL)
		return -ENOMEM;
	sd = &state->sd;
	v4l2_i2c_subdev_init(sd, client, &adv7180_ops);

	/* Initialize adv7180 */
	/* enable autodetection */
	ret = i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
		ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM);
	if (ret > 0)
		ret = i2c_smbus_write_byte_data(client,
			ADV7180_AUTODETECT_ENABLE_REG,
			ADV7180_AUTODETECT_DEFAULT);
	if (ret < 0) {
		printk(KERN_ERR DRIVER_NAME
			": Failed to communicate to chip: %d\n", ret);
		return ret;
	}

	return 0;
}

static int adv7180_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

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

static const struct i2c_device_id adv7180_id[] = {
	{DRIVER_NAME, 0},
	{},
};

MODULE_DEVICE_TABLE(i2c, adv7180_id);

static struct i2c_driver adv7180_driver = {
	.driver = {
		.owner	= THIS_MODULE,
		.name	= DRIVER_NAME,
	},
	.probe		= adv7180_probe,
	.remove		= adv7180_remove,
	.id_table	= adv7180_id,
};

static __init int adv7180_init(void)
{
	return i2c_add_driver(&adv7180_driver);
}

static __exit void adv7180_exit(void)
{
	i2c_del_driver(&adv7180_driver);
}

module_init(adv7180_init);
module_exit(adv7180_exit);

MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver");
MODULE_AUTHOR("Mocean Laboratories");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
6789cb52 RR	1	/*
	2	* adv7180.c Analog Devices ADV7180 video decoder driver
	3	* Copyright (c) 2009 Intel Corporation
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/init.h>
	21	#include <linux/errno.h>
	22	#include <linux/kernel.h>
	23	#include <linux/interrupt.h>
	24	#include <linux/i2c.h>
	25	#include <linux/i2c-id.h>
	26	#include <media/v4l2-ioctl.h>
	27	#include <linux/videodev2.h>
	28	#include <media/v4l2-device.h>
	29	#include <media/v4l2-chip-ident.h>
	30
	31	#define DRIVER_NAME "adv7180"
	32
d3124294 RR	33	#define ADV7180_INPUT_CONTROL_REG 0x00
	34	#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00
	35	#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10
	36	#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM 0x20
	37	#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM 0x30
	38	#define ADV7180_INPUT_CONTROL_NTSC_J 0x40
	39	#define ADV7180_INPUT_CONTROL_NTSC_M 0x50
	40	#define ADV7180_INPUT_CONTROL_PAL60 0x60
	41	#define ADV7180_INPUT_CONTROL_NTSC_443 0x70
	42	#define ADV7180_INPUT_CONTROL_PAL_BG 0x80
	43	#define ADV7180_INPUT_CONTROL_PAL_N 0x90
	44	#define ADV7180_INPUT_CONTROL_PAL_M 0xa0
	45	#define ADV7180_INPUT_CONTROL_PAL_M_PED 0xb0
	46	#define ADV7180_INPUT_CONTROL_PAL_COMB_N 0xc0
	47	#define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED 0xd0
	48	#define ADV7180_INPUT_CONTROL_PAL_SECAM 0xe0
	49	#define ADV7180_INPUT_CONTROL_PAL_SECAM_PED 0xf0
	50
6789cb52 RR	51	#define ADV7180_AUTODETECT_ENABLE_REG 0x07
	52	#define ADV7180_AUTODETECT_DEFAULT 0x7f
	53
	54
d3124294 RR	55	#define ADV7180_STATUS1_REG 0x10
	56	#define ADV7180_STATUS1_IN_LOCK 0x01
	57	#define ADV7180_STATUS1_AUTOD_MASK 0x70
6789cb52 RR	58	#define ADV7180_STATUS1_AUTOD_NTSM_M_J 0x00
	59	#define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10
	60	#define ADV7180_STATUS1_AUTOD_PAL_M 0x20
	61	#define ADV7180_STATUS1_AUTOD_PAL_60 0x30
	62	#define ADV7180_STATUS1_AUTOD_PAL_B_G 0x40
	63	#define ADV7180_STATUS1_AUTOD_SECAM 0x50
	64	#define ADV7180_STATUS1_AUTOD_PAL_COMB 0x60
	65	#define ADV7180_STATUS1_AUTOD_SECAM_525 0x70
	66
	67	#define ADV7180_IDENT_REG 0x11
	68	#define ADV7180_ID_7180 0x18
	69
	70
	71	struct adv7180_state {
	72	struct v4l2_subdev sd;
	73	};
	74
d3124294	75	static v4l2_std_id adv7180_std_to_v4l2(u8 status1)
6789cb52	76	{
6789cb52 RR	77	switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
6789cb52 RR	78	case ADV7180_STATUS1_AUTOD_NTSM_M_J:
d3124294	79	return V4L2_STD_NTSC;
6789cb52 RR	80	case ADV7180_STATUS1_AUTOD_NTSC_4_43:
	81	return V4L2_STD_NTSC_443;
	82	case ADV7180_STATUS1_AUTOD_PAL_M:
	83	return V4L2_STD_PAL_M;
	84	case ADV7180_STATUS1_AUTOD_PAL_60:
	85	return V4L2_STD_PAL_60;
	86	case ADV7180_STATUS1_AUTOD_PAL_B_G:
	87	return V4L2_STD_PAL;
	88	case ADV7180_STATUS1_AUTOD_SECAM:
	89	return V4L2_STD_SECAM;
	90	case ADV7180_STATUS1_AUTOD_PAL_COMB:
	91	return V4L2_STD_PAL_Nc \| V4L2_STD_PAL_N;
	92	case ADV7180_STATUS1_AUTOD_SECAM_525:
	93	return V4L2_STD_SECAM;
	94	default:
	95	return V4L2_STD_UNKNOWN;
	96	}
	97	}
	98
d3124294 RR	99	static u32 adv7180_status_to_v4l2(u8 status1)
	100	{
	101	if (!(status1 & ADV7180_STATUS1_IN_LOCK))
	102	return V4L2_IN_ST_NO_SIGNAL;
	103
	104	return 0;
	105	}
	106
	107	static int __adv7180_status(struct i2c_client client, u32 status,
	108	v4l2_std_id *std)
	109	{
	110	int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);
	111
	112	if (status1 < 0)
	113	return status1;
	114
	115	if (status)
	116	*status = adv7180_status_to_v4l2(status1);
	117	if (std)
	118	*std = adv7180_std_to_v4l2(status1);
	119
	120	return 0;
	121	}
	122
6789cb52 RR	123	static inline struct adv7180_state to_state(struct v4l2_subdev sd)
	124	{
	125	return container_of(sd, struct adv7180_state, sd);
	126	}
	127
	128	static int adv7180_querystd(struct v4l2_subdev sd, v4l2_std_id std)
	129	{
d3124294 RR	130	return __adv7180_status(v4l2_get_subdevdata(sd), NULL, std);
d3124294 RR	131	}
6789cb52	132
d3124294 RR	133	static int adv7180_g_input_status(struct v4l2_subdev sd, u32 status)
	134	{
	135	return __adv7180_status(v4l2_get_subdevdata(sd), status, NULL);
6789cb52 RR	136	}
	137
	138	static int adv7180_g_chip_ident(struct v4l2_subdev *sd,
	139	struct v4l2_dbg_chip_ident *chip)
	140	{
	141	struct i2c_client *client = v4l2_get_subdevdata(sd);
	142
	143	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7180, 0);
	144	}
	145
	146	static const struct v4l2_subdev_video_ops adv7180_video_ops = {
	147	.querystd = adv7180_querystd,
d3124294	148	.g_input_status = adv7180_g_input_status,
6789cb52 RR	149	};
	150
	151	static const struct v4l2_subdev_core_ops adv7180_core_ops = {
	152	.g_chip_ident = adv7180_g_chip_ident,
	153	};
	154
	155	static const struct v4l2_subdev_ops adv7180_ops = {
	156	.core = &adv7180_core_ops,
	157	.video = &adv7180_video_ops,
	158	};
	159
	160	/*
	161	* Generic i2c probe
	162	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
	163	*/
	164
	165	static int adv7180_probe(struct i2c_client *client,
	166	const struct i2c_device_id *id)
	167	{
	168	struct adv7180_state *state;
	169	struct v4l2_subdev *sd;
	170	int ret;
	171
	172	/* Check if the adapter supports the needed features */
	173	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
	174	return -EIO;
	175
	176	v4l_info(client, "chip found @ 0x%02x (%s)\n",
	177	client->addr << 1, client->adapter->name);
	178
	179	state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
	180	if (state == NULL)
	181	return -ENOMEM;
	182	sd = &state->sd;
	183	v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
	184
	185	/* Initialize adv7180 */
	186	/* enable autodetection */
	187	ret = i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG,
d3124294	188	ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM);
6789cb52 RR	189	if (ret > 0)
	190	ret = i2c_smbus_write_byte_data(client,
	191	ADV7180_AUTODETECT_ENABLE_REG,
	192	ADV7180_AUTODETECT_DEFAULT);
	193	if (ret < 0) {
	194	printk(KERN_ERR DRIVER_NAME
	195	": Failed to communicate to chip: %d\n", ret);
	196	return ret;
	197	}
	198
	199	return 0;
	200	}
	201
	202	static int adv7180_remove(struct i2c_client *client)
	203	{
	204	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	205
	206	v4l2_device_unregister_subdev(sd);
	207	kfree(to_state(sd));
	208	return 0;
	209	}
	210
	211	static const struct i2c_device_id adv7180_id[] = {
	212	{DRIVER_NAME, 0},
	213	{},
	214	};
	215
	216	MODULE_DEVICE_TABLE(i2c, adv7180_id);
	217
	218	static struct i2c_driver adv7180_driver = {
	219	.driver = {
	220	.owner = THIS_MODULE,
	221	.name = DRIVER_NAME,
	222	},
	223	.probe = adv7180_probe,
	224	.remove = adv7180_remove,
	225	.id_table = adv7180_id,
	226	};
	227
	228	static __init int adv7180_init(void)
	229	{
	230	return i2c_add_driver(&adv7180_driver);
	231	}
	232
	233	static __exit void adv7180_exit(void)
	234	{
	235	i2c_del_driver(&adv7180_driver);
	236	}
	237
	238	module_init(adv7180_init);
	239	module_exit(adv7180_exit);
	240
	241	MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver");
	242	MODULE_AUTHOR("Mocean Laboratories");
	243	MODULE_LICENSE("GPL v2");
	244