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

drivers/media/video/Kconfig

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

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

drivers/media/video/Makefile

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

+3 −0

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

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

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