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NXP media drivers improvements

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Merge tag 'tags/media-next-imx-20240419' of git://git.kernel.org/pub/scm/linux/kernel/git/pinchartl/linux.git into media_stage

NXP media drivers improvements.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.linuxtv.org/project/linux-media/patch/20240419103822.GA6868@pendragon.ideasonboard.com/
This commit is contained in:
Hans Verkuil 2024-04-22 10:44:31 +02:00
commit bda8f2f1de
2 changed files with 34 additions and 1 deletions
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1
Documentation/devicetree/bindings/media/nxp,imx8-isi.yaml
View File

@ -84,6 +84,7 @@ allOf:
properties:
port@0:
description: MIPI CSI-2 RX
port@1: false
required:
- port@0

34
drivers/media/platform/nxp/imx-mipi-csis.c
View File

@ -30,6 +30,7 @@
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-mc.h>
#include <media/v4l2-subdev.h>
@ -742,6 +743,18 @@ static void mipi_csis_stop_stream(struct mipi_csis_device *csis)
mipi_csis_system_enable(csis, false);
}
static void mipi_csis_queue_event_sof(struct mipi_csis_device *csis)
{
struct v4l2_event event = {
.type = V4L2_EVENT_FRAME_SYNC,
};
u32 frame;
frame = mipi_csis_read(csis, MIPI_CSIS_FRAME_COUNTER_CH(0));
event.u.frame_sync.frame_sequence = frame;
v4l2_event_queue(csis->sd.devnode, &event);
}
static irqreturn_t mipi_csis_irq_handler(int irq, void *dev_id)
{
struct mipi_csis_device *csis = dev_id;
@ -765,6 +778,10 @@ static irqreturn_t mipi_csis_irq_handler(int irq, void *dev_id)
event->counter++;
}
}
if (status & MIPI_CSIS_INT_SRC_FRAME_START)
mipi_csis_queue_event_sof(csis);
spin_unlock_irqrestore(&csis->slock, flags);
mipi_csis_write(csis, MIPI_CSIS_INT_SRC, status);
@ -1154,8 +1171,23 @@ static int mipi_csis_log_status(struct v4l2_subdev *sd)
return 0;
}
static int mipi_csis_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
struct v4l2_event_subscription *sub)
{
if (sub->type != V4L2_EVENT_FRAME_SYNC)
return -EINVAL;
/* V4L2_EVENT_FRAME_SYNC doesn't require an id, so zero should be set */
if (sub->id != 0)
return -EINVAL;
return v4l2_event_subscribe(fh, sub, 0, NULL);
}
static const struct v4l2_subdev_core_ops mipi_csis_core_ops = {
.log_status = mipi_csis_log_status,
.subscribe_event = mipi_csis_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_video_ops mipi_csis_video_ops = {
@ -1358,7 +1390,7 @@ static int mipi_csis_subdev_init(struct mipi_csis_device *csis)
snprintf(sd->name, sizeof(sd->name), "csis-%s",
dev_name(csis->dev));
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
sd->ctrl_handler = NULL;
sd->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;