path: root/drivers/media/i2c/tvp514x.c

/*
 * drivers/media/i2c/tvp514x.c
 *
 * TI TVP5146/47 decoder driver
 *
 * Copyright (C) 2008 Texas Instruments Inc
 * Author: Vaibhav Hiremath <hvaibhav@ti.com>
 *
 * Contributors:
 *     Sivaraj R <sivaraj@ti.com>
 *     Brijesh R Jadav <brijesh.j@ti.com>
 *     Hardik Shah <hardik.shah@ti.com>
 *     Manjunath Hadli <mrh@ti.com>
 *     Karicheri Muralidharan <m-karicheri2@ti.com>
 *
 * This package 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/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include <linux/module.h>

#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-ctrls.h>
#include <media/tvp514x.h>

#include "tvp514x_regs.h"

/* Module Name */
#define TVP514X_MODULE_NAME		"tvp514x"

/* Private macros for TVP */
#define I2C_RETRY_COUNT                 (5)
#define LOCK_RETRY_COUNT                (5)
#define LOCK_RETRY_DELAY                (200)

/* Debug functions */
static bool debug;
module_param(debug, bool, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-1)");

MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("TVP514X linux decoder driver");
MODULE_LICENSE("GPL");

/* enum tvp514x_std - enum for supported standards */
enum tvp514x_std {
	STD_NTSC_MJ = 0,
	STD_PAL_BDGHIN,
	STD_INVALID
};

/**
 * struct tvp514x_std_info - Structure to store standard informations
 * @width: Line width in pixels
 * @height:Number of active lines
 * @video_std: Value to write in REG_VIDEO_STD register
 * @standard: v4l2 standard structure information
 */
struct tvp514x_std_info {
	unsigned long width;
	unsigned long height;
	u8 video_std;
	struct v4l2_standard standard;
};

static struct tvp514x_reg tvp514x_reg_list_default[0x40];

static int tvp514x_s_stream(struct v4l2_subdev *sd, int enable);
/**
 * struct tvp514x_decoder - TVP5146/47 decoder object
 * @sd: Subdevice Slave handle
 * @tvp514x_regs: copy of hw's regs with preset values.
 * @pdata: Board specific
 * @ver: Chip version
 * @streaming: TVP5146/47 decoder streaming - enabled or disabled.
 * @current_std: Current standard
 * @num_stds: Number of standards
 * @std_list: Standards list
 * @input: Input routing at chip level
 * @output: Output routing at chip level
 */
struct tvp514x_decoder {
	struct v4l2_subdev sd;
	struct v4l2_ctrl_handler hdl;
	struct tvp514x_reg tvp514x_regs[ARRAY_SIZE(tvp514x_reg_list_default)];
	const struct tvp514x_platform_data *pdata;

	int ver;
	int streaming;

	enum tvp514x_std current_std;
	int num_stds;
	const struct tvp514x_std_info *std_list;
	/* Input and Output Routing parameters */
	u32 input;
	u32 output;
};

/* TVP514x default register values */
static struct tvp514x_reg tvp514x_reg_list_default[] = {
	/* Composite selected */
	{TOK_WRITE, REG_INPUT_SEL, 0x05},
	{TOK_WRITE, REG_AFE_GAIN_CTRL, 0x0F},
	/* Auto mode */
	{TOK_WRITE, REG_VIDEO_STD, 0x00},
	{TOK_WRITE, REG_OPERATION_MODE, 0x00},
	{TOK_SKIP, REG_AUTOSWITCH_MASK, 0x3F},
	{TOK_WRITE, REG_COLOR_KILLER, 0x10},
	{TOK_WRITE, REG_LUMA_CONTROL1, 0x00},
	{TOK_WRITE, REG_LUMA_CONTROL2, 0x00},
	{TOK_WRITE, REG_LUMA_CONTROL3, 0x02},
	{TOK_WRITE, REG_BRIGHTNESS, 0x80},
	{TOK_WRITE, REG_CONTRAST, 0x80},
	{TOK_WRITE, REG_SATURATION, 0x80},
	{TOK_WRITE, REG_HUE, 0x00},
	{TOK_WRITE, REG_CHROMA_CONTROL1, 0x00},
	{TOK_WRITE, REG_CHROMA_CONTROL2, 0x0E},
	/* Reserved */
	{TOK_SKIP, 0x0F, 0x00},
	{TOK_WRITE, REG_COMP_PR_SATURATION, 0x80},
	{TOK_WRITE, REG_COMP_Y_CONTRAST, 0x80},
	{TOK_WRITE, REG_COMP_PB_SATURATION, 0x80},
	/* Reserved */
	{TOK_SKIP, 0x13, 0x00},
	{TOK_WRITE, REG_COMP_Y_BRIGHTNESS, 0x80},
	/* Reserved */
	{TOK_SKIP, 0x15, 0x00},
	/* NTSC timing */