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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OKI Semiconductor ML86V7667 video decoder driver
*
* Author: Vladimir Barinov <source@cogentembedded.com>
* Copyright (C) 2013 Cogent Embedded, Inc.
* Copyright (C) 2013 Renesas Solutions Corp.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#define DRV_NAME "ml86v7667"
/* Subaddresses */
#define MRA_REG 0x00 /* Mode Register A */
#define MRC_REG 0x02 /* Mode Register C */
#define LUMC_REG 0x0C /* Luminance Control */
#define CLC_REG 0x10 /* Contrast level control */
#define SSEPL_REG 0x11 /* Sync separation level */
#define CHRCA_REG 0x12 /* Chrominance Control A */
#define ACCC_REG 0x14 /* ACC Loop filter & Chrominance control */
#define ACCRC_REG 0x15 /* ACC Reference level control */
#define HUE_REG 0x16 /* Hue control */
#define ADC2_REG 0x1F /* ADC Register 2 */
#define PLLR1_REG 0x20 /* PLL Register 1 */
#define STATUS_REG 0x2C /* STATUS Register */
/* Mode Register A register bits */
#define MRA_OUTPUT_MODE_MASK (3 << 6)
#define MRA_ITUR_BT601 (1 << 6)
#define MRA_ITUR_BT656 (0 << 6)
#define MRA_INPUT_MODE_MASK (7 << 3)
#define MRA_PAL_BT601 (4 << 3)
#define MRA_NTSC_BT601 (0 << 3)
#define MRA_REGISTER_MODE (1 << 0)
/* Mode Register C register bits */
#define MRC_AUTOSELECT (1 << 7)
/* Luminance Control register bits */
#define LUMC_ONOFF_SHIFT 7
#define LUMC_ONOFF_MASK (1 << 7)
/* Contrast level control register bits */
#define CLC_CONTRAST_ONOFF (1 << 7)
#define CLC_CONTRAST_MASK 0x0F
/* Sync separation level register bits */
#define SSEPL_LUMINANCE_ONOFF (1 << 7)
#define SSEPL_LUMINANCE_MASK 0x7F
/* Chrominance Control A register bits */
#define CHRCA_MODE_SHIFT 6
#define CHRCA_MODE_MASK (1 << 6)
/* ACC Loop filter & Chrominance control register bits */
#define ACCC_CHROMA_CR_SHIFT 3
#define ACCC_CHROMA_CR_MASK (7 << 3)
#define ACCC_CHROMA_CB_SHIFT 0
#define ACCC_CHROMA_CB_MASK (7 << 0)
/* ACC Reference level control register bits */
#define ACCRC_CHROMA_MASK 0xfc
#define ACCRC_CHROMA_SHIFT 2
/* ADC Register 2 register bits */
#define ADC2_CLAMP_VOLTAGE_MASK (7 << 1)
#define ADC2_CLAMP_VOLTAGE(n) ((n & 7) << 1)
/* PLL Register 1 register bits */
#define PLLR1_FIXED_CLOCK (1 << 7)
/* STATUS Register register bits */
#define STATUS_HLOCK_DETECT (1 << 3)
#define STATUS_NTSCPAL (1 << 2)
struct ml86v7667_priv {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
v4l2_std_id std;
};
static inline struct ml86v7667_priv *to_ml86v7667(struct v4l2_subdev *subdev)
{
return container_of(subdev, struct ml86v7667_priv, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct ml86v7667_priv, hdl)->sd;
}
static int ml86v7667_mask_set(struct i2c_client *client, const u8 reg,
const u8 mask, const u8 data)
{
int val = i2c_smbus_read_byte_data(client, reg);
if (val < 0)
return val;
val = (val & ~mask) | (data & mask);
return i2c_smbus_write_byte_data(client, reg, val);
}
static int ml86v7667_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = -EINVAL;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ret = ml86v7667_mask_set(client, SSEPL_REG,
SSEPL_LUMINANCE_MASK, ctrl->val);
break;
case V4L2_CID_CONTRAST:
ret = ml86v7667_mask_set(client, CLC_REG,
CLC_CONTRAST_MASK, ctrl->val);
break;
case V4L2_CID_CHROMA_GAIN:
ret = ml86v7667_mask_set(client, ACCRC_REG, ACCRC_CHROMA_MASK,
ctrl->val << ACCRC_CHROMA_SHIFT);
break;
case V4L2_CID_HUE:
ret = ml86v7667_mask_set(client, HUE_REG, ~0, ctrl->val);
break;
case V4L2_CID_RED_BALANCE:
ret = ml86v7667_mask_set(client, ACCC_REG,
ACCC_CHROMA_CR_MASK,
ctrl->val << ACCC_CHROMA_CR_SHIFT);
break;
case V4L2_CID_BLUE_BALANCE:
ret = ml86v7667_mask_set(client, ACCC_REG,
ACCC_CHROMA_CB_MASK,
ctrl->val << ACCC_CHROMA_CB_SHIFT);
break;
case V4L2_CID_SHARPNESS:
ret = ml86v7667_mask_set(client, LUMC_REG,
LUMC_ONOFF_MASK,
ctrl->val << LUMC_ONOFF_SHIFT);
break;
case V4L2_CID_COLOR_KILLER:
ret = ml86v7667_mask_set(client, CHRCA_REG,
CHRCA_MODE_MASK,
ctrl->val << CHRCA_MODE_SHIFT);
break;
}
return ret;
}
static int ml86v7667_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
int status;
status = i2c_smbus_read_byte_data(client, STATUS_REG);
if (status < 0)
return status;
if (status & STATUS_HLOCK_DETECT)
*std &= status & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
else
*std = V4L2_STD_UNKNOWN;
return 0;
}
static int ml86v7667_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
int status_reg;
status_reg = i2c_smbus_read_byte_data(client, STATUS_REG);
if (status_reg < 0)
return status_reg;
*status = status_reg & STATUS_HLOCK_DETECT ? 0 : V4L2_IN_ST_NO_SIGNAL;
return 0;
}
static int ml86v7667_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->pad || code->index > 0)
return -EINVAL;
code->code = MEDIA_BUS_FMT_YUYV8_2X8;
return 0;
}
static int ml86v7667_fill_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct ml86v7667_priv *priv = to_ml86v7667(sd);
struct v4l2_mbus_framefmt *fmt = &format->format;
if (format->pad)
return -EINVAL;
fmt->code = MEDIA_BUS_FMT_YUYV8_2X8;
fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
/* The top field is always transferred first by the chip */
fmt->field = V4L2_FIELD_INTERLACED_TB;
fmt->width = 720;
fmt->height = priv->std & V4L2_STD_525_60 ? 480 : 576;
return 0;
}
static int ml86v7667_get_mbus_config(struct v4l2_subdev *sd,
unsigned int pad,
struct v4l2_mbus_config *cfg)
{
cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
V4L2_MBUS_DATA_ACTIVE_HIGH;
cfg->type = V4L2_MBUS_BT656;
return 0;
}
static int ml86v7667_g_std(struct v4l2_subdev *sd, v4l2_std_id *std)
{
struct ml86v7667_priv *priv = to_ml86v7667(sd);
*std = priv->std;
return 0;
}
static int ml86v7667_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct ml86v7667_priv *priv = to_ml86v7667(sd);
struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
int ret;
u8 mode;
/* PAL/NTSC ITU-R BT.601 input mode */
mode = std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
ret = ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, mode);
if (ret < 0)
return ret;
priv->std = std;
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ml86v7667_g_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
ret = i2c_smbus_read_byte_data(client, (u8)reg->reg);
if (ret < 0)
return ret;
reg->val = ret;
reg->size = sizeof(u8);
return 0;
}
static int ml86v7667_s_register(struct v4l2_subdev *sd,
const struct v4l2_dbg_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return i2c_smbus_write_byte_data(client, (u8)reg->reg, (u8)reg->val);
}
#endif
static const struct v4l2_ctrl_ops ml86v7667_ctrl_ops = {
.s_ctrl = ml86v7667_s_ctrl,
};
static const struct v4l2_subdev_video_ops ml86v7667_subdev_video_ops = {
.g_std = ml86v7667_g_std,
.s_std = ml86v7667_s_std,
.
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