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-rw-r--r--drivers/media/platform/omap3isp/isp.c78
-rw-r--r--drivers/media/platform/omap3isp/isp.h5
-rw-r--r--drivers/media/platform/omap3isp/ispccdc.c5
-rw-r--r--drivers/media/platform/omap3isp/ispccp2.c3
-rw-r--r--drivers/media/platform/omap3isp/ispcsi2.c3
-rw-r--r--drivers/media/platform/omap3isp/isppreview.c3
-rw-r--r--drivers/media/platform/omap3isp/ispqueue.c2
-rw-r--r--drivers/media/platform/omap3isp/ispresizer.c18
-rw-r--r--drivers/media/platform/omap3isp/ispstat.c2
-rw-r--r--drivers/media/platform/omap3isp/ispvideo.c106
-rw-r--r--drivers/media/platform/omap3isp/ispvideo.h2
11 files changed, 129 insertions, 98 deletions
diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index fdbdeae3900..5807185262f 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -873,15 +873,12 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
unsigned long flags;
int ret;
- /* If the preview engine crashed it might not respond to read/write
- * operations on the L4 bus. This would result in a bus fault and a
- * kernel oops. Refuse to start streaming in that case. This check must
- * be performed before the loop below to avoid starting entities if the
- * pipeline won't start anyway (those entities would then likely fail to
- * stop, making the problem worse).
+ /* Refuse to start streaming if an entity included in the pipeline has
+ * crashed. This check must be performed before the loop below to avoid
+ * starting entities if the pipeline won't start anyway (those entities
+ * would then likely fail to stop, making the problem worse).
*/
- if ((pipe->entities & isp->crashed) &
- (1U << isp->isp_prev.subdev.entity.id))
+ if (pipe->entities & isp->crashed)
return -EIO;
spin_lock_irqsave(&pipe->lock, flags);
@@ -1014,13 +1011,23 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
else
ret = 0;
+ /* Handle stop failures. An entity that fails to stop can
+ * usually just be restarted. Flag the stop failure nonetheless
+ * to trigger an ISP reset the next time the device is released,
+ * just in case.
+ *
+ * The preview engine is a special case. A failure to stop can
+ * mean a hardware crash. When that happens the preview engine
+ * won't respond to read/write operations on the L4 bus anymore,
+ * resulting in a bus fault and a kernel oops next time it gets
+ * accessed. Mark it as crashed to prevent pipelines including
+ * it from being started.
+ */
if (ret) {
dev_info(isp->dev, "Unable to stop %s\n", subdev->name);
- /* If the entity failed to stopped, assume it has
- * crashed. Mark it as such, the ISP will be reset when
- * applications will release it.
- */
- isp->crashed |= 1U << subdev->entity.id;
+ isp->stop_failure = true;
+ if (subdev == &isp->isp_prev.subdev)
+ isp->crashed |= 1U << subdev->entity.id;
failure = -ETIMEDOUT;
}
}
@@ -1057,6 +1064,23 @@ int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
}
/*
+ * omap3isp_pipeline_cancel_stream - Cancel stream on a pipeline
+ * @pipe: ISP pipeline
+ *
+ * Cancelling a stream mark all buffers on all video nodes in the pipeline as
+ * erroneous and makes sure no new buffer can be queued. This function is called
+ * when a fatal error that prevents any further operation on the pipeline
+ * occurs.
+ */
+void omap3isp_pipeline_cancel_stream(struct isp_pipeline *pipe)
+{
+ if (pipe->input)
+ omap3isp_video_cancel_stream(pipe->input);
+ if (pipe->output)
+ omap3isp_video_cancel_stream(pipe->output);
+}
+
+/*
* isp_pipeline_resume - Resume streaming on a pipeline
* @pipe: ISP pipeline
*
@@ -1208,6 +1232,7 @@ static int isp_reset(struct isp_device *isp)
udelay(1);
}
+ isp->stop_failure = false;
isp->crashed = 0;
return 0;
}
@@ -1619,7 +1644,7 @@ void omap3isp_put(struct isp_device *isp)
/* Reset the ISP if an entity has failed to stop. This is the
* only way to recover from such conditions.
*/
- if (isp->crashed)
+ if (isp->crashed || isp->stop_failure)
isp_reset(isp);
isp_disable_clocks(isp);
}
@@ -2130,28 +2155,13 @@ static int isp_map_mem_resource(struct platform_device *pdev,
/* request the mem region for the camera registers */
mem = platform_get_resource(pdev, IORESOURCE_MEM, res);
- if (!mem) {
- dev_err(isp->dev, "no mem resource?\n");
- return -ENODEV;
- }
-
- if (!devm_request_mem_region(isp->dev, mem->start, resource_size(mem),
- pdev->name)) {
- dev_err(isp->dev,
- "cannot reserve camera register I/O region\n");
- return -ENODEV;
- }
- isp->mmio_base_phys[res] = mem->start;
- isp->mmio_size[res] = resource_size(mem);
/* map the region */
- isp->mmio_base[res] = devm_ioremap_nocache(isp->dev,
- isp->mmio_base_phys[res],
- isp->mmio_size[res]);
- if (!isp->mmio_base[res]) {
- dev_err(isp->dev, "cannot map camera register I/O region\n");
- return -ENODEV;
- }
+ isp->mmio_base[res] = devm_ioremap_resource(isp->dev, mem);
+ if (IS_ERR(isp->mmio_base[res]))
+ return PTR_ERR(isp->mmio_base[res]);
+
+ isp->mmio_base_phys[res] = mem->start;
return 0;
}
diff --git a/drivers/media/platform/omap3isp/isp.h b/drivers/media/platform/omap3isp/isp.h
index d1e857e4173..081f5ec5a66 100644
--- a/drivers/media/platform/omap3isp/isp.h
+++ b/drivers/media/platform/omap3isp/isp.h
@@ -152,9 +152,9 @@ struct isp_xclk {
* regions.
* @mmio_base_phys: Array with physical L4 bus addresses for ISP register
* regions.
- * @mmio_size: Array with ISP register regions size in bytes.
* @stat_lock: Spinlock for handling statistics
* @isp_mutex: Mutex for serializing requests to ISP.
+ * @stop_failure: Indicates that an entity failed to stop.
* @crashed: Bitmask of crashed entities (indexed by entity ID)
* @has_context: Context has been saved at least once and can be restored.
* @ref_count: Reference count for handling multiple ISP requests.
@@ -188,11 +188,11 @@ struct isp_device {
void __iomem *mmio_base[OMAP3_ISP_IOMEM_LAST];
unsigned long mmio_base_phys[OMAP3_ISP_IOMEM_LAST];
- resource_size_t mmio_size[OMAP3_ISP_IOMEM_LAST];
/* ISP Obj */
spinlock_t stat_lock; /* common lock for statistic drivers */
struct mutex isp_mutex; /* For handling ref_count field */
+ bool stop_failure;
u32 crashed;
int has_context;
int ref_count;
@@ -238,6 +238,7 @@ int omap3isp_module_sync_is_stopping(wait_queue_head_t *wait,
int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
enum isp_pipeline_stream_state state);
+void omap3isp_pipeline_cancel_stream(struct isp_pipeline *pipe);
void omap3isp_configure_bridge(struct isp_device *isp,
enum ccdc_input_entity input,
const struct isp_parallel_platform_data *pdata,
diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index 907a205da5a..5db2c88b9ad 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -1516,6 +1516,8 @@ static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
if (ccdc_sbl_wait_idle(ccdc, 1000)) {
dev_info(isp->dev, "CCDC won't become idle!\n");
+ isp->crashed |= 1U << ccdc->subdev.entity.id;
+ omap3isp_pipeline_cancel_stream(pipe);
goto done;
}
@@ -2484,7 +2486,8 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
v4l2_set_subdevdata(sd, ccdc);
sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
- pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK
+ | MEDIA_PAD_FL_MUST_CONNECT;
pads[CCDC_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE;
diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c
index e71651429dd..e84fe0543e4 100644
--- a/drivers/media/platform/omap3isp/ispccp2.c
+++ b/drivers/media/platform/omap3isp/ispccp2.c
@@ -1076,7 +1076,8 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2)
v4l2_set_subdevdata(sd, ccp2);
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
- pads[CCP2_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[CCP2_PAD_SINK].flags = MEDIA_PAD_FL_SINK
+ | MEDIA_PAD_FL_MUST_CONNECT;
pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ccp2_media_ops;
diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c
index 6db245d84bb..620560828a4 100644
--- a/drivers/media/platform/omap3isp/ispcsi2.c
+++ b/drivers/media/platform/omap3isp/ispcsi2.c
@@ -1245,7 +1245,8 @@ static int csi2_init_entities(struct isp_csi2_device *csi2)
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
pads[CSI2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
- pads[CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK
+ | MEDIA_PAD_FL_MUST_CONNECT;
me->ops = &csi2_media_ops;
ret = media_entity_init(me, CSI2_PADS_NUM, pads, 0);
diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c
index cd8831aebde..1c776c1186f 100644
--- a/drivers/media/platform/omap3isp/isppreview.c
+++ b/drivers/media/platform/omap3isp/isppreview.c
@@ -2283,7 +2283,8 @@ static int preview_init_entities(struct isp_prev_device *prev)
v4l2_ctrl_handler_setup(&prev->ctrls);
sd->ctrl_handler = &prev->ctrls;
- pads[PREV_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[PREV_PAD_SINK].flags = MEDIA_PAD_FL_SINK
+ | MEDIA_PAD_FL_MUST_CONNECT;
pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &preview_media_ops;
diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c
index e15f0134205..5f0f8fab1d1 100644
--- a/drivers/media/platform/omap3isp/ispqueue.c
+++ b/drivers/media/platform/omap3isp/ispqueue.c
@@ -553,8 +553,10 @@ static void isp_video_buffer_query(struct isp_video_buffer *buf,
switch (buf->state) {
case ISP_BUF_STATE_ERROR:
vbuf->flags |= V4L2_BUF_FLAG_ERROR;
+ /* Fallthrough */
case ISP_BUF_STATE_DONE:
vbuf->flags |= V4L2_BUF_FLAG_DONE;
+ break;
case ISP_BUF_STATE_QUEUED:
case ISP_BUF_STATE_ACTIVE:
vbuf->flags |= V4L2_BUF_FLAG_QUEUED;
diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c
index d11fb261d53..0d36b8bc9f9 100644
--- a/drivers/media/platform/omap3isp/ispresizer.c
+++ b/drivers/media/platform/omap3isp/ispresizer.c
@@ -1532,6 +1532,20 @@ static int resizer_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
return 0;
}
+static int resizer_link_validate(struct v4l2_subdev *sd,
+ struct media_link *link,
+ struct v4l2_subdev_format *source_fmt,
+ struct v4l2_subdev_format *sink_fmt)
+{
+ struct isp_res_device *res = v4l2_get_subdevdata(sd);
+ struct isp_pipeline *pipe = to_isp_pipeline(&sd->entity);
+
+ omap3isp_resizer_max_rate(res, &pipe->max_rate);
+
+ return v4l2_subdev_link_validate_default(sd, link,
+ source_fmt, sink_fmt);
+}
+
/*
* resizer_init_formats - Initialize formats on all pads
* @sd: ISP resizer V4L2 subdevice
@@ -1570,6 +1584,7 @@ static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = {
.set_fmt = resizer_set_format,
.get_selection = resizer_get_selection,
.set_selection = resizer_set_selection,
+ .link_validate = resizer_link_validate,
};
/* subdev operations */
@@ -1701,7 +1716,8 @@ static int resizer_init_entities(struct isp_res_device *res)
v4l2_set_subdevdata(sd, res);
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
- pads[RESZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[RESZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK
+ | MEDIA_PAD_FL_MUST_CONNECT;
pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &resizer_media_ops;
diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c
index 61e17f9bd8b..a75407c3a72 100644
--- a/drivers/media/platform/omap3isp/ispstat.c
+++ b/drivers/media/platform/omap3isp/ispstat.c
@@ -1067,7 +1067,7 @@ static int isp_stat_init_entities(struct ispstat *stat, const char *name,
subdev->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE;
v4l2_set_subdevdata(subdev, stat);
- stat->pad.flags = MEDIA_PAD_FL_SINK;
+ stat->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
me->ops = NULL;
return media_entity_init(me, 1, &stat->pad, 0);
diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c
index f6304bb074f..856fdf55403 100644
--- a/drivers/media/platform/omap3isp/ispvideo.c
+++ b/drivers/media/platform/omap3isp/ispvideo.c
@@ -278,55 +278,6 @@ static int isp_video_get_graph_data(struct isp_video *video,
return 0;
}
-/*
- * Validate a pipeline by checking both ends of all links for format
- * discrepancies.
- *
- * Compute the minimum time per frame value as the maximum of time per frame
- * limits reported by every block in the pipeline.
- *
- * Return 0 if all formats match, or -EPIPE if at least one link is found with
- * different formats on its two ends or if the pipeline doesn't start with a
- * video source (either a subdev with no input pad, or a non-subdev entity).
- */
-static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
-{
- struct isp_device *isp = pipe->output->isp;
- struct media_pad *pad;
- struct v4l2_subdev *subdev;
-
- subdev = isp_video_remote_subdev(pipe->output, NULL);
- if (subdev == NULL)
- return -EPIPE;
-
- while (1) {
- /* Retrieve the sink format */
- pad = &subdev->entity.pads[0];
- if (!(pad->flags & MEDIA_PAD_FL_SINK))
- break;
-
- /* Update the maximum frame rate */
- if (subdev == &isp->isp_res.subdev)
- omap3isp_resizer_max_rate(&isp->isp_res,
- &pipe->max_rate);
-
- /* Retrieve the source format. Return an error if no source
- * entity can be found, and stop checking the pipeline if the
- * source entity isn't a subdev.
- */
- pad = media_entity_remote_pad(pad);
- if (pad == NULL)
- return -EPIPE;
-
- if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
- break;
-
- subdev = media_entity_to_v4l2_subdev(pad->entity);
- }
-
- return 0;
-}
-
static int
__isp_video_get_format(struct isp_video *video, struct v4l2_format *format)
{
@@ -460,6 +411,15 @@ static int isp_video_buffer_prepare(struct isp_video_buffer *buf)
struct isp_video *video = vfh->video;
unsigned long addr;
+ /* Refuse to prepare the buffer is the video node has registered an
+ * error. We don't need to take any lock here as the operation is
+ * inherently racy. The authoritative check will be performed in the
+ * queue handler, which can't return an error, this check is just a best
+ * effort to notify userspace as early as possible.
+ */
+ if (unlikely(video->error))
+ return -EIO;
+
addr = ispmmu_vmap(video->isp, buf->sglist, buf->sglen);
if (IS_ERR_VALUE(addr))
return -EIO;
@@ -496,6 +456,12 @@ static void isp_video_buffer_queue(struct isp_video_buffer *buf)
unsigned int empty;
unsigned int start;
+ if (unlikely(video->error)) {
+ buf->state = ISP_BUF_STATE_ERROR;
+ wake_up(&buf->wait);
+ return;
+ }
+
empty = list_empty(&video->dmaqueue);
list_add_tail(&buffer->buffer.irqlist, &video->dmaqueue);
@@ -618,6 +584,36 @@ struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video)
}
/*
+ * omap3isp_video_cancel_stream - Cancel stream on a video node
+ * @video: ISP video object
+ *
+ * Cancelling a stream mark all buffers on the video node as erroneous and makes
+ * sure no new buffer can be queued.
+ */
+void omap3isp_video_cancel_stream(struct isp_video *video)
+{
+ struct isp_video_queue *queue = video->queue;
+ unsigned long flags;
+
+ spin_lock_irqsave(&queue->irqlock, flags);
+
+ while (!list_empty(&video->dmaqueue)) {
+ struct isp_video_buffer *buf;
+
+ buf = list_first_entry(&video->dmaqueue,
+ struct isp_video_buffer, irqlist);
+ list_del(&buf->irqlist);
+
+ buf->state = ISP_BUF_STATE_ERROR;
+ wake_up(&buf->wait);
+ }
+
+ video->error = true;
+
+ spin_unlock_irqrestore(&queue->irqlock, flags);
+}
+
+/*
* omap3isp_video_resume - Perform resume operation on the buffers
* @video: ISP video object
* @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise
@@ -1051,11 +1047,6 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
if (ret < 0)
goto err_check_format;
- /* Validate the pipeline and update its state. */
- ret = isp_video_validate_pipeline(pipe);
- if (ret < 0)
- goto err_check_format;
-
pipe->error = false;
spin_lock_irqsave(&pipe->lock, flags);
@@ -1159,6 +1150,7 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
omap3isp_video_queue_streamoff(&vfh->queue);
video->queue = NULL;
video->streaming = 0;
+ video->error = false;
if (video->isp->pdata->set_constraints)
video->isp->pdata->set_constraints(video->isp, false);
@@ -1332,11 +1324,13 @@ int omap3isp_video_init(struct isp_video *video, const char *name)
switch (video->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
direction = "output";
- video->pad.flags = MEDIA_PAD_FL_SINK;
+ video->pad.flags = MEDIA_PAD_FL_SINK
+ | MEDIA_PAD_FL_MUST_CONNECT;
break;
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
direction = "input";
- video->pad.flags = MEDIA_PAD_FL_SOURCE;
+ video->pad.flags = MEDIA_PAD_FL_SOURCE
+ | MEDIA_PAD_FL_MUST_CONNECT;
video->video.vfl_dir = VFL_DIR_TX;
break;
diff --git a/drivers/media/platform/omap3isp/ispvideo.h b/drivers/media/platform/omap3isp/ispvideo.h
index 1ad470ec2b9..4e194076cc6 100644
--- a/drivers/media/platform/omap3isp/ispvideo.h
+++ b/drivers/media/platform/omap3isp/ispvideo.h
@@ -178,6 +178,7 @@ struct isp_video {
/* Pipeline state */
struct isp_pipeline pipe;
struct mutex stream_lock; /* pipeline and stream states */
+ bool error;
/* Video buffers queue */
struct isp_video_queue *queue;
@@ -207,6 +208,7 @@ int omap3isp_video_register(struct isp_video *video,
struct v4l2_device *vdev);
void omap3isp_video_unregister(struct isp_video *video);
struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video);
+void omap3isp_video_cancel_stream(struct isp_video *video);
void omap3isp_video_resume(struct isp_video *video, int continuous);
struct media_pad *omap3isp_video_remote_pad(struct isp_video *video);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-25 20:27:53 +0000