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linux-sg2042
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[media] media: i2c: tvp7002: enable TVP7002 decoder for media controller based usage 

This patch enables tvp7002 decoder driver for media controller
based usage by adding v4l2_subdev_pad_ops  operations support
for enum_mbus_code, set_pad_format, get_pad_format and media_entity_init()
on probe and media_entity_cleanup() on remove.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Lad, Prabhakar 2013-05-03 04:17:19 -03:00 committed by Mauro Carvalho Chehab
parent f743687690
commit 63eb2ca171
2 changed files with 93 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
drivers/media/i2c/tvp7002.c
View File

@ -424,6 +424,7 @@ struct tvp7002 {
int streaming;
const struct tvp7002_timings_definition *current_timings;
struct media_pad pad;
};
/*
@ -880,6 +881,65 @@ static const struct v4l2_ctrl_ops tvp7002_ctrl_ops = {
.s_ctrl = tvp7002_s_ctrl,
};
/*
* tvp7002_enum_mbus_code() - Enum supported digital video format on pad
* @sd: pointer to standard V4L2 sub-device structure
* @fh: file handle for the subdev
* @code: pointer to subdev enum mbus code struct
*
* Enumerate supported digital video formats for pad.
*/
static int
tvp7002_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_mbus_code_enum *code)
{
/* Check requested format index is within range */
if (code->index != 0)
return -EINVAL;
code->code = V4L2_MBUS_FMT_YUYV10_1X20;
return 0;
}
/*
* tvp7002_get_pad_format() - get video format on pad
* @sd: pointer to standard V4L2 sub-device structure
* @fh: file handle for the subdev
* @fmt: pointer to subdev format struct
*
* get video format for pad.
*/
static int
tvp7002_get_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
struct tvp7002 *tvp7002 = to_tvp7002(sd);
fmt->format.code = V4L2_MBUS_FMT_YUYV10_1X20;
fmt->format.width = tvp7002->current_timings->timings.bt.width;
fmt->format.height = tvp7002->current_timings->timings.bt.height;
fmt->format.field = tvp7002->current_timings->scanmode;
fmt->format.colorspace = tvp7002->current_timings->color_space;
return 0;
}
/*
* tvp7002_set_pad_format() - set video format on pad
* @sd: pointer to standard V4L2 sub-device structure
* @fh: file handle for the subdev
* @fmt: pointer to subdev format struct
*
* set video format for pad.
*/
static int
tvp7002_set_pad_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
struct v4l2_subdev_format *fmt)
{
return tvp7002_get_pad_format(sd, fh, fmt);
}
/* V4L2 core operation handlers */
static const struct v4l2_subdev_core_ops tvp7002_core_ops = {
.g_chip_ident = tvp7002_g_chip_ident,
@ -910,10 +970,18 @@ static const struct v4l2_subdev_video_ops tvp7002_video_ops = {
.enum_mbus_fmt = tvp7002_enum_mbus_fmt,
};
/* media pad related operation handlers */
static const struct v4l2_subdev_pad_ops tvp7002_pad_ops = {
.enum_mbus_code = tvp7002_enum_mbus_code,
.get_fmt = tvp7002_get_pad_format,
.set_fmt = tvp7002_set_pad_format,
};
/* V4L2 top level operation handlers */
static const struct v4l2_subdev_ops tvp7002_ops = {
.core = &tvp7002_core_ops,
.video = &tvp7002_video_ops,
.pad = &tvp7002_pad_ops,
};
/*
@ -993,19 +1061,35 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
timings = device->current_timings->timings;
error = tvp7002_s_dv_timings(sd, &timings);
#if defined(CONFIG_MEDIA_CONTROLLER)
strlcpy(sd->name, TVP7002_MODULE_NAME, sizeof(sd->name));
device->pad.flags = MEDIA_PAD_FL_SOURCE;
device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
error = media_entity_init(&device->sd.entity, 1, &device->pad, 0);
if (error < 0)
return error;
#endif
v4l2_ctrl_handler_init(&device->hdl, 1);
v4l2_ctrl_new_std(&device->hdl, &tvp7002_ctrl_ops,
V4L2_CID_GAIN, 0, 255, 1, 0);
sd->ctrl_handler = &device->hdl;
if (device->hdl.error) {
int err = device->hdl.error;
v4l2_ctrl_handler_free(&device->hdl);
return err;
error = device->hdl.error;
goto error;
}
v4l2_ctrl_handler_setup(&device->hdl);
return 0;
error:
v4l2_ctrl_handler_free(&device->hdl);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&device->sd.entity);
#endif
return error;
}
/*
@ -1022,7 +1106,9 @@ static int tvp7002_remove(struct i2c_client *c)
v4l2_dbg(1, debug, sd, "Removing tvp7002 adapter"
"on address 0x%x\n", c->addr);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&device->sd.entity);
#endif
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&device->hdl);
return 0;

2
include/media/tvp7002.h
View File

@ -26,6 +26,8 @@
#ifndef _TVP7002_H_
#define _TVP7002_H_
#define TVP7002_MODULE_NAME "tvp7002"
/* Platform-dependent data
*
* clk_polarity: