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media: imx7: mipi csis: Create media links in bound notifier

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Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the mipi csi-2 receiver sink pad.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Steve Longerbeam 2020-05-01 19:15:48 +02:00 committed by Mauro Carvalho Chehab
parent 8b4713c993
commit 6e996653e7
1 changed files with 23 additions and 0 deletions
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23
drivers/staging/media/imx/imx7-mipi-csis.c
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@ -26,6 +26,7 @@
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-mc.h>
#include <media/v4l2-subdev.h>
#define CSIS_DRIVER_NAME "imx7-mipi-csis"
@ -385,6 +386,12 @@ static int mipi_csis_dump_regs(struct csi_state *state)
return 0;
}
static struct csi_state *
mipi_notifier_to_csis_state(struct v4l2_async_notifier *n)
{
return container_of(n, struct csi_state, notifier);
}
static struct csi_state *mipi_sd_to_csis_state(struct v4l2_subdev *sdev)
{
return container_of(sdev, struct csi_state, mipi_sd);
@ -948,6 +955,20 @@ static int mipi_csis_parse_dt(struct platform_device *pdev,
static int mipi_csis_pm_resume(struct device *dev, bool runtime);
static int mipi_csis_notify_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *sd,
struct v4l2_async_subdev *asd)
{
struct csi_state *state = mipi_notifier_to_csis_state(notifier);
struct media_pad *sink = &state->mipi_sd.entity.pads[CSIS_PAD_SINK];
return v4l2_create_fwnode_links_to_pad(sd, sink);
}
static const struct v4l2_async_notifier_operations mipi_csis_notify_ops = {
.bound = mipi_csis_notify_bound,
};
static int mipi_csis_subdev_init(struct v4l2_subdev *mipi_sd,
struct platform_device *pdev,
const struct v4l2_subdev_ops *ops)
@ -1016,6 +1037,8 @@ static int mipi_csis_async_register(struct csi_state *state)
fwnode_handle_put(ep);
state->notifier.ops = &mipi_csis_notify_ops;
ret = v4l2_async_subdev_notifier_register(&state->mipi_sd,
&state->notifier);
if (ret)