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media: ti-vpe: cal: Split video device initialization and registration

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There's no need to delay most of the video device initialization until
the sensor subdevs are bound. Split the initialization and registration,
and perform the initialization when creating the context.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Laurent Pinchart 2020-07-06 20:36:15 +02:00 committed by Mauro Carvalho Chehab
parent b4b784953c
commit d68a94e98a
1 changed files with 42 additions and 28 deletions
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70
drivers/media/platform/ti-vpe/cal.c
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@ -1856,7 +1856,7 @@ static const struct vb2_ops cal_video_qops = {
};
/* ------------------------------------------------------------------
* Initialization and module stuff
* V4L2 Initialization and Registration
* ------------------------------------------------------------------
*/
@ -1870,11 +1870,36 @@ static const struct video_device cal_videodev = {
V4L2_CAP_READWRITE,
};
static int cal_complete_ctx(struct cal_ctx *ctx)
static int cal_ctx_v4l2_register(struct cal_ctx *ctx)
{
struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
struct video_device *vfd;
struct vb2_queue *q;
struct video_device *vfd = &ctx->vdev;
int ret;
ret = v4l2_ctrl_add_handler(hdl, ctx->phy->sensor->ctrl_handler, NULL,
true);
if (ret < 0) {
ctx_err(ctx, "Failed to add sensor ctrl handler\n");
return ret;
}
ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr);
if (ret < 0) {
ctx_err(ctx, "Failed to register video device\n");
return ret;
}
ctx_info(ctx, "V4L2 device registered as %s\n",
video_device_node_name(vfd));
return 0;
}
static int cal_ctx_v4l2_init(struct cal_ctx *ctx)
{
struct v4l2_ctrl_handler *hdl = &ctx->ctrl_handler;
struct video_device *vfd = &ctx->vdev;
struct vb2_queue *q = &ctx->vb_vidq;
int ret;
/* initialize locks */
@ -1882,7 +1907,6 @@ static int cal_complete_ctx(struct cal_ctx *ctx)
mutex_init(&ctx->mutex);
/* initialize queue */
q = &ctx->vb_vidq;
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
q->drv_priv = ctx;
@ -1901,18 +1925,15 @@ static int cal_complete_ctx(struct cal_ctx *ctx)
/* init video dma queues */
INIT_LIST_HEAD(&ctx->vidq.active);
vfd = &ctx->vdev;
*vfd = cal_videodev;
vfd->v4l2_dev = &ctx->cal->v4l2_dev;
vfd->queue = q;
/* Initialize the control handler. */
v4l2_ctrl_handler_init(hdl, 11);
v4l2_ctrl_add_handler(hdl, ctx->phy->sensor->ctrl_handler, NULL, true);
if (hdl->error) {
ret = v4l2_ctrl_handler_init(hdl, 11);
if (ret < 0) {
ctx_err(ctx, "Failed to init ctrl handler\n");
ret = hdl->error;
goto error;
return ret;
}
vfd->ctrl_handler = hdl;
@ -1924,20 +1945,14 @@ static int cal_complete_ctx(struct cal_ctx *ctx)
vfd->lock = &ctx->mutex;
video_set_drvdata(vfd, ctx);
ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr);
if (ret < 0)
goto error;
ctx_info(ctx, "V4L2 device registered as %s\n",
video_device_node_name(vfd));
return 0;
error:
v4l2_ctrl_handler_free(hdl);
return ret;
}
/* ------------------------------------------------------------------
* Initialization and module stuff
* ------------------------------------------------------------------
*/
static int cal_async_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *subdev,
struct v4l2_async_subdev *asd)
@ -1992,7 +2007,7 @@ static int cal_async_bound(struct v4l2_async_notifier *notifier,
return -EINVAL;
}
cal_complete_ctx(ctx);
cal_ctx_v4l2_register(ctx);
return 0;
}
@ -2123,16 +2138,15 @@ static struct cal_ctx *cal_ctx_create(struct cal_dev *cal, int inst)
if (!ctx)
return NULL;
/* save the cal_dev * for future ref */
ctx->cal = cal;
/* Make sure Camera Core H/W register area is available */
ctx->phy = cal->phy[inst];
/* Store the instance id */
ctx->index = inst;
ctx->cport = inst;
ret = cal_ctx_v4l2_init(ctx);
if (ret)
return NULL;
ret = of_cal_create_instance(ctx, inst);
if (ret)
return NULL;