linux/drivers/media/dvb-frontends/au8522_decoder.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Auvitek AU8522 QAM/8VSB demodulator driver and video decoder
 *
 * Copyright (C) 2009 Devin Heitmueller <[email protected]>
 * Copyright (C) 2005-2008 Auvitek International, Ltd.
 */

/* Developer notes:
 *
 * Enough is implemented here for CVBS and S-Video inputs, but the actual
 *  analog demodulator code isn't implemented (not needed for xc5000 since it
 *  has its own demodulator and outputs CVBS)
 *
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include "au8522.h"
#include "au8522_priv.h"

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;

static int au8522_analog_debug;


module_param_named(analog_debug, au8522_analog_debug, int, 0644);

MODULE_PARM_DESC(…) …;

struct au8522_register_config { … };


/* Video Decoder Filter Coefficients
   The values are as follows from left to right
   0="ATV RF" 1="ATV RF13" 2="CVBS" 3="S-Video" 4="PAL" 5=CVBS13" 6="SVideo13"
*/
static const struct au8522_register_config filter_coef[] = …;
#define NUM_FILTER_COEF …


/* Registers 0x060b through 0x0652 are the LP Filter coefficients
   The values are as follows from left to right
   0="SIF" 1="ATVRF/ATVRF13"
   Note: the "ATVRF/ATVRF13" mode has never been tested
*/
static const struct au8522_register_config lpfilter_coef[] = …;
#define NUM_LPFILTER_COEF …

static inline struct au8522_state *to_state(struct v4l2_subdev *sd)
{ … }

static void setup_decoder_defaults(struct au8522_state *state, bool is_svideo)
{ … }

static void au8522_setup_cvbs_mode(struct au8522_state *state, u8 input_mode)
{ … }

static void au8522_setup_cvbs_tuner_mode(struct au8522_state *state,
					 u8 input_mode)
{ … }

static void au8522_setup_svideo_mode(struct au8522_state *state,
				     u8 input_mode)
{ … }

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

static void disable_audio_input(struct au8522_state *state)
{ … }

/* 0=disable, 1=SIF */
static void set_audio_input(struct au8522_state *state)
{ … }

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

static int au8522_s_ctrl(struct v4l2_ctrl *ctrl)
{ … }

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

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int au8522_g_register(struct v4l2_subdev *sd,
			     struct v4l2_dbg_register *reg)
{ … }

static int au8522_s_register(struct v4l2_subdev *sd,
			     const struct v4l2_dbg_register *reg)
{ … }
#endif

static void au8522_video_set(struct au8522_state *state)
{ … }

static int au8522_s_stream(struct v4l2_subdev *sd, int enable)
{ … }

static int au8522_s_video_routing(struct v4l2_subdev *sd,
					u32 input, u32 output, u32 config)
{ … }

static int au8522_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{ … }

static int au8522_s_audio_routing(struct v4l2_subdev *sd,
					u32 input, u32 output, u32 config)
{ … }

static int au8522_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
{ … }

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

static const struct v4l2_subdev_core_ops au8522_core_ops = …;

static const struct v4l2_subdev_tuner_ops au8522_tuner_ops = …;

static const struct v4l2_subdev_audio_ops au8522_audio_ops = …;

static const struct v4l2_subdev_video_ops au8522_video_ops = …;

static const struct v4l2_subdev_ops au8522_ops = …;

static const struct v4l2_ctrl_ops au8522_ctrl_ops = …;

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

static int au8522_probe(struct i2c_client *client)
{ … }

static void au8522_remove(struct i2c_client *client)
{ … }

static const struct i2c_device_id au8522_id[] = …;

MODULE_DEVICE_TABLE(i2c, au8522_id);

static struct i2c_driver au8522_driver = …;

module_i2c_driver(…) …;