V4L/DVB (13019): video: initial support for ADV7180 (6789cb52) · Commits · e / devices / android_kernel_teracube_2e

drivers/media/video/Kconfig

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		@@ -265,6 +265,15 @@ config VIDEO_SAA6588

		comment "Video decoders"

		config VIDEO_ADV7180
		tristate "Analog Devices ADV7180 decoder"
		depends on VIDEO_V4L2 && I2C
		---help---
		Support for the Analog Devices ADV7180 video decoder.

		To compile this driver as a module, choose M here: the
		module will be called adv7180.

		config VIDEO_BT819
		tristate "BT819A VideoStream decoder"
		depends on VIDEO_V4L2 && I2C

drivers/media/video/Makefile

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		@@ -45,6 +45,7 @@ obj-$(CONFIG_VIDEO_SAA7185) += saa7185.o
		obj-$(CONFIG_VIDEO_SAA7191) += saa7191.o
		obj-$(CONFIG_VIDEO_ADV7170) += adv7170.o
		obj-$(CONFIG_VIDEO_ADV7175) += adv7175.o
		obj-$(CONFIG_VIDEO_ADV7180) += adv7180.o
		obj-$(CONFIG_VIDEO_ADV7343) += adv7343.o
		obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o
		obj-$(CONFIG_VIDEO_BT819) += bt819.o

drivers/media/video/adv7180.c

0 → 100644

+202 −0

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		/*
		* 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_PAL_BG_NTSC_J_SECAM 0x00
		#define ADV7180_AUTODETECT_ENABLE_REG 0x07
		#define ADV7180_AUTODETECT_DEFAULT 0x7f


		#define ADV7180_STATUS1_REG 0x10
		#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 determine_norm(struct i2c_client *client)
		{
		u8 status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG);

		switch (status1 & ADV7180_STATUS1_AUTOD_MASK) {
		case ADV7180_STATUS1_AUTOD_NTSM_M_J:
		return V4L2_STD_NTSC_M_JP;
		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 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)
		{
		struct i2c_client *client = v4l2_get_subdevdata(sd);

		*std = determine_norm(client);
		return 0;
		}

		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,
		};

		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_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");

include/media/v4l2-chip-ident.h

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		@@ -135,6 +135,9 @@ enum {
		/* module adv7175: just ident 7175 */
		V4L2_IDENT_ADV7175 = 7175,

		/* module adv7180: just ident 7180 */
		V4L2_IDENT_ADV7180 = 7180,

		/* module saa7185: just ident 7185 */
		V4L2_IDENT_SAA7185 = 7185,