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linux-stable/drivers/media/i2c/ml86v7667.c
Tomi Valkeinen 0d346d2a6f media: v4l2-subdev: add subdev-wide state struct 
We have 'struct v4l2_subdev_pad_config' which contains configuration for
a single pad used for the TRY functionality, and an array of those
structs is passed to various v4l2_subdev_pad_ops.

I was working on subdev internal routing between pads, and realized that
there's no way to add TRY functionality for routes, which is not pad
specific configuration. Adding a separate struct for try-route config
wouldn't work either, as e.g. set-fmt needs to know the try-route
configuration to propagate the settings.

This patch adds a new struct, 'struct v4l2_subdev_state' (which at the
moment only contains the v4l2_subdev_pad_config array) and the new
struct is used in most of the places where v4l2_subdev_pad_config was
used. All v4l2_subdev_pad_ops functions taking v4l2_subdev_pad_config
are changed to instead take v4l2_subdev_state.

The changes to drivers/media/v4l2-core/v4l2-subdev.c and
include/media/v4l2-subdev.h were written by hand, and all the driver
changes were done with the semantic patch below. The spatch needs to be
applied to a select list of directories. I used the following shell
commands to apply the spatch:

dirs="drivers/media/i2c drivers/media/platform drivers/media/usb drivers/media/test-drivers/vimc drivers/media/pci drivers/staging/media"
for dir in $dirs; do spatch -j8 --dir --include-headers --no-show-diff --in-place --sp-file v4l2-subdev-state.cocci $dir; done

Note that Coccinelle chokes on a few drivers (gcc extensions?). With
minor changes we can make Coccinelle run fine, and these changes can be
reverted after spatch. The diff for these changes is:

For drivers/media/i2c/s5k5baf.c:

	@@ -1481,7 +1481,7 @@ static int s5k5baf_set_selection(struct v4l2_subdev *sd,
	 				&s5k5baf_cis_rect,
	 				v4l2_subdev_get_try_crop(sd, cfg, PAD_CIS),
	 				v4l2_subdev_get_try_compose(sd, cfg, PAD_CIS),
	-				v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT)
	+				v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT),
	 			};
	 		s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
	 		return 0;

For drivers/media/platform/s3c-camif/camif-capture.c:

	@@ -1230,7 +1230,7 @@ static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd,
	 		*mf = camif->mbus_fmt;
	 		break;

	-	case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
	+	case CAMIF_SD_PAD_SOURCE_C:
	 		/* crop rectangle at camera interface input */
	 		mf->width = camif->camif_crop.width;
	 		mf->height = camif->camif_crop.height;
	@@ -1332,7 +1332,7 @@ static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd,
	 		}
	 		break;

	-	case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
	+	case CAMIF_SD_PAD_SOURCE_C:
	 		/* Pixel format can be only changed on the sink pad. */
	 		mf->code = camif->mbus_fmt.code;
	 		mf->width = crop->width;

The semantic patch is:

// <smpl>

// Change function parameter

@@
identifier func;
identifier cfg;
@@

 func(...,
-   struct v4l2_subdev_pad_config *cfg
+   struct v4l2_subdev_state *sd_state
    , ...)
 {
 <...
- cfg
+ sd_state
 ...>
 }

// Change function declaration parameter

@@
identifier func;
identifier cfg;
type T;
@@
T func(...,
-   struct v4l2_subdev_pad_config *cfg
+   struct v4l2_subdev_state *sd_state
    , ...);

// Change function return value

@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
 *func(...)
 {
    ...
 }

// Change function declaration return value

@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
 *func(...);

// Some drivers pass a local pad_cfg for a single pad to a called function. Wrap it
// inside a pad_state.

@@
identifier func;
identifier pad_cfg;
@@
func(...)
{
    ...
    struct v4l2_subdev_pad_config pad_cfg;
+   struct v4l2_subdev_state pad_state = { .pads = &pad_cfg };

    <+...

(
    v4l2_subdev_call
|
    sensor_call
|
    isi_try_fse
|
    isc_try_fse
|
    saa_call_all
)
    (...,
-   &pad_cfg
+   &pad_state
    ,...)

    ...+>
}

// If the function uses fields from pad_config, access via state->pads

@@
identifier func;
identifier state;
@@
 func(...,
    struct v4l2_subdev_state *state
    , ...)
 {
    <...
(
-   state->try_fmt
+   state->pads->try_fmt
|
-   state->try_crop
+   state->pads->try_crop
|
-   state->try_compose
+   state->pads->try_compose
)
    ...>
}

// If the function accesses the filehandle, use fh->state instead

@@
struct v4l2_subdev_fh *fh;
@@
-    fh->pad
+    fh->state

@@
struct v4l2_subdev_fh fh;
@@
-    fh.pad
+    fh.state

// Start of vsp1 specific

@@
@@
struct vsp1_entity {
    ...
-    struct v4l2_subdev_pad_config *config;
+    struct v4l2_subdev_state *config;
    ...
};

@@
symbol entity;
@@
vsp1_entity_init(...)
{
    ...
    entity->config =
-    v4l2_subdev_alloc_pad_config
+    v4l2_subdev_alloc_state
    (&entity->subdev);
    ...
}

@@
symbol entity;
@@
vsp1_entity_destroy(...)
{
    ...
-   v4l2_subdev_free_pad_config
+   v4l2_subdev_free_state
    (entity->config);
    ...
}

@exists@
identifier func =~ "(^vsp1.*)|(hsit_set_format)|(sru_enum_frame_size)|(sru_set_format)|(uif_get_selection)|(uif_set_selection)|(uds_enum_frame_size)|(uds_set_format)|(brx_set_format)|(brx_get_selection)|(histo_get_selection)|(histo_set_selection)|(brx_set_selection)";
symbol config;
@@
func(...) {
    ...
-    struct v4l2_subdev_pad_config *config;
+    struct v4l2_subdev_state *config;
    ...
}

// End of vsp1 specific

// Start of rcar specific

@@
identifier sd;
identifier pad_cfg;
@@
 rvin_try_format(...)
 {
    ...
-   struct v4l2_subdev_pad_config *pad_cfg;
+   struct v4l2_subdev_state *sd_state;
    ...
-   pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+   sd_state = v4l2_subdev_alloc_state(sd);
    <...
-   pad_cfg
+   sd_state
    ...>
-   v4l2_subdev_free_pad_config(pad_cfg);
+   v4l2_subdev_free_state(sd_state);
    ...
 }

// End of rcar specific

// Start of rockchip specific

@@
identifier func =~ "(rkisp1_rsz_get_pad_fmt)|(rkisp1_rsz_get_pad_crop)|(rkisp1_rsz_register)";
symbol rsz;
symbol pad_cfg;
@@

 func(...)
 {
+   struct v4l2_subdev_state state = { .pads = rsz->pad_cfg };
    ...
-   rsz->pad_cfg
+   &state
    ...
 }

@@
identifier func =~ "(rkisp1_isp_get_pad_fmt)|(rkisp1_isp_get_pad_crop)";
symbol isp;
symbol pad_cfg;
@@

 func(...)
 {
+   struct v4l2_subdev_state state = { .pads = isp->pad_cfg };
    ...
-   isp->pad_cfg
+   &state
    ...
 }

@@
symbol rkisp1;
symbol isp;
symbol pad_cfg;
@@

 rkisp1_isp_register(...)
 {
+   struct v4l2_subdev_state state = { .pads = rkisp1->isp.pad_cfg };
    ...
-   rkisp1->isp.pad_cfg
+   &state
    ...
 }

// End of rockchip specific

// Start of tegra-video specific

@@
identifier sd;
identifier pad_cfg;
@@
 __tegra_channel_try_format(...)
 {
    ...
-   struct v4l2_subdev_pad_config *pad_cfg;
+   struct v4l2_subdev_state *sd_state;
    ...
-   pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+   sd_state = v4l2_subdev_alloc_state(sd);
    <...
-   pad_cfg
+   sd_state
    ...>
-   v4l2_subdev_free_pad_config(pad_cfg);
+   v4l2_subdev_free_state(sd_state);
    ...
 }

@@
identifier sd_state;
@@
 __tegra_channel_try_format(...)
 {
    ...
    struct v4l2_subdev_state *sd_state;
    <...
-   sd_state->try_crop
+   sd_state->pads->try_crop
    ...>
 }

// End of tegra-video specific

// </smpl>

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-06-17 10:01:27 +02:00

447 lines
12 KiB
C
Raw Blame History

// 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_state *sd_state,
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_state *sd_state,
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,
.querystd = ml86v7667_querystd,
.g_input_status = ml86v7667_g_input_status,
};
static const struct v4l2_subdev_pad_ops ml86v7667_subdev_pad_ops = {
.enum_mbus_code = ml86v7667_enum_mbus_code,
.get_fmt = ml86v7667_fill_fmt,
.set_fmt = ml86v7667_fill_fmt,
.get_mbus_config = ml86v7667_get_mbus_config,
};
static const struct v4l2_subdev_core_ops ml86v7667_subdev_core_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ml86v7667_g_register,
.s_register = ml86v7667_s_register,
#endif
};
static const struct v4l2_subdev_ops ml86v7667_subdev_ops = {
.core = &ml86v7667_subdev_core_ops,
.video = &ml86v7667_subdev_video_ops,
.pad = &ml86v7667_subdev_pad_ops,
};
static int ml86v7667_init(struct ml86v7667_priv *priv)
{
struct i2c_client *client = v4l2_get_subdevdata(&priv->sd);
int val;
int ret;
/* BT.656-4 output mode, register mode */
ret = ml86v7667_mask_set(client, MRA_REG,
MRA_OUTPUT_MODE_MASK | MRA_REGISTER_MODE,
MRA_ITUR_BT656 | MRA_REGISTER_MODE);
/* PLL circuit fixed clock, 32MHz */
ret |= ml86v7667_mask_set(client, PLLR1_REG, PLLR1_FIXED_CLOCK,
PLLR1_FIXED_CLOCK);
/* ADC2 clamping voltage maximum */
ret |= ml86v7667_mask_set(client, ADC2_REG, ADC2_CLAMP_VOLTAGE_MASK,
ADC2_CLAMP_VOLTAGE(7));
/* enable luminance function */
ret |= ml86v7667_mask_set(client, SSEPL_REG, SSEPL_LUMINANCE_ONOFF,
SSEPL_LUMINANCE_ONOFF);
/* enable contrast function */
ret |= ml86v7667_mask_set(client, CLC_REG, CLC_CONTRAST_ONOFF, 0);
/*
* PAL/NTSC autodetection is enabled after reset,
* set the autodetected std in manual std mode and
* disable autodetection
*/
val = i2c_smbus_read_byte_data(client, STATUS_REG);
if (val < 0)
return val;
priv->std = val & STATUS_NTSCPAL ? V4L2_STD_625_50 : V4L2_STD_525_60;
ret |= ml86v7667_mask_set(client, MRC_REG, MRC_AUTOSELECT, 0);
val = priv->std & V4L2_STD_525_60 ? MRA_NTSC_BT601 : MRA_PAL_BT601;
ret |= ml86v7667_mask_set(client, MRA_REG, MRA_INPUT_MODE_MASK, val);
return ret;
}
static int ml86v7667_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct ml86v7667_priv *priv;
int ret;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
v4l2_i2c_subdev_init(&priv->sd, client, &ml86v7667_subdev_ops);
v4l2_ctrl_handler_init(&priv->hdl, 8);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_BRIGHTNESS, -64, 63, 1, 0);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_CONTRAST, -8, 7, 1, 0);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_CHROMA_GAIN, -32, 31, 1, 0);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_HUE, -128, 127, 1, 0);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_RED_BALANCE, -4, 3, 1, 0);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_BLUE_BALANCE, -4, 3, 1, 0);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_SHARPNESS, 0, 1, 1, 0);
v4l2_ctrl_new_std(&priv->hdl, &ml86v7667_ctrl_ops,
V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
priv->sd.ctrl_handler = &priv->hdl;
ret = priv->hdl.error;
if (ret)
goto cleanup;
v4l2_ctrl_handler_setup(&priv->hdl);
ret = ml86v7667_init(priv);
if (ret)
goto cleanup;
v4l_info(client, "chip found @ 0x%02x (%s)\n",
client->addr, client->adapter->name);
return 0;
cleanup:
v4l2_ctrl_handler_free(&priv->hdl);
v4l2_device_unregister_subdev(&priv->sd);
v4l_err(client, "failed to probe @ 0x%02x (%s)\n",
client->addr, client->adapter->name);
return ret;
}
static int ml86v7667_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ml86v7667_priv *priv = to_ml86v7667(sd);
v4l2_ctrl_handler_free(&priv->hdl);
v4l2_device_unregister_subdev(&priv->sd);
return 0;
}
static const struct i2c_device_id ml86v7667_id[] = {
{DRV_NAME, 0},
{},
};
MODULE_DEVICE_TABLE(i2c, ml86v7667_id);
static struct i2c_driver ml86v7667_i2c_driver = {
.driver = {
.name = DRV_NAME,
},
.probe = ml86v7667_probe,
.remove = ml86v7667_remove,
.id_table = ml86v7667_id,
};
module_i2c_driver(ml86v7667_i2c_driver);
MODULE_DESCRIPTION("OKI Semiconductor ML86V7667 video decoder driver");
MODULE_AUTHOR("Vladimir Barinov");
MODULE_LICENSE("GPL");
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