@@ -27,9 +27,10 @@
#include <media/videobuf2-core.h>
#include <media/videobuf2-dma-contig.h>
-#include "media-dev.h"
+#include "common.h"
#include "fimc-core.h"
#include "fimc-reg.h"
+#include "media-dev.h"
static int fimc_capture_hw_init(struct fimc_dev *fimc)
{
@@ -472,40 +473,13 @@ static struct vb2_ops fimc_capture_qops = {
.stop_streaming = stop_streaming,
};
-/**
- * fimc_capture_ctrls_create - initialize the control handler
- * Initialize the capture video node control handler and fill it
- * with the FIMC controls. Inherit any sensor's controls if the
- * 'user_subdev_api' flag is false (default behaviour).
- * This function need to be called with the graph mutex held.
- */
-int fimc_capture_ctrls_create(struct fimc_dev *fimc)
-{
- struct fimc_vid_cap *vid_cap = &fimc->vid_cap;
- struct v4l2_subdev *sensor = fimc->pipeline.subdevs[IDX_SENSOR];
- int ret;
-
- if (WARN_ON(vid_cap->ctx == NULL))
- return -ENXIO;
- if (vid_cap->ctx->ctrls.ready)
- return 0;
-
- ret = fimc_ctrls_create(vid_cap->ctx);
-
- if (ret || vid_cap->user_subdev_api || !sensor ||
- !vid_cap->ctx->ctrls.ready)
- return ret;
-
- return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrls.handler,
- sensor->ctrl_handler, NULL);
-}
-
static int fimc_capture_set_default_format(struct fimc_dev *fimc);
static int fimc_capture_open(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
- struct exynos_video_entity *ve = &fimc->vid_cap.ve;
+ struct fimc_vid_cap *vc = &fimc->vid_cap;
+ struct exynos_video_entity *ve = &vc->ve;
int ret = -EBUSY;
dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state);
@@ -530,12 +504,20 @@ static int fimc_capture_open(struct file *file)
if (v4l2_fh_is_singular_file(file)) {
ret = fimc_pipeline_call(fimc, open, &fimc->pipeline,
&fimc->vid_cap.ve.vdev.entity, true);
-
- if (!ret && !fimc->vid_cap.user_subdev_api)
+ if (ret == 0)
ret = fimc_capture_set_default_format(fimc);
- if (!ret)
- ret = fimc_capture_ctrls_create(fimc);
+ if (ret == 0 && vc->user_subdev_api && vc->inh_sensor_ctrls) {
+ /*
+ * Recreate controls of the the video node to drop
+ * any controls inherited from the sensor subdev.
+ */
+ fimc_ctrls_delete(vc->ctx);
+
+ ret = fimc_ctrls_create(vc->ctx);
+ if (ret == 0)
+ vc->inh_sensor_ctrls = false;
+ }
if (ret < 0) {
clear_bit(ST_CAPT_BUSY, &fimc->state);
@@ -574,10 +556,6 @@ static int fimc_capture_release(struct file *file)
}
pm_runtime_put(&fimc->pdev->dev);
-
- if (v4l2_fh_is_singular_file(file))
- fimc_ctrls_delete(fimc->vid_cap.ctx);
-
ret = vb2_fop_release(file);
mutex_unlock(&fimc->lock);
@@ -1410,6 +1388,8 @@ static int fimc_link_setup(struct media_entity *entity,
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
+ struct fimc_vid_cap *vc = &fimc->vid_cap;
+ struct v4l2_subdev *sensor;
if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return -EINVAL;
@@ -1421,15 +1401,26 @@ static int fimc_link_setup(struct media_entity *entity,
local->entity->name, remote->entity->name, flags,
fimc->vid_cap.input);
- if (flags & MEDIA_LNK_FL_ENABLED) {
- if (fimc->vid_cap.input != 0)
- return -EBUSY;
- fimc->vid_cap.input = sd->grp_id;
+ if (!(flags & MEDIA_LNK_FL_ENABLED)) {
+ fimc->vid_cap.input = 0;
return 0;
}
- fimc->vid_cap.input = 0;
- return 0;
+ if (vc->input != 0)
+ return -EBUSY;
+
+ vc->input = sd->grp_id;
+
+ if (vc->user_subdev_api || vc->inh_sensor_ctrls)
+ return 0;
+
+ /* Inherit V4L2 controls from the image sensor subdev. */
+ sensor = fimc_find_remote_sensor(&vc->subdev.entity);
+ if (sensor == NULL)
+ return 0;
+
+ return v4l2_ctrl_add_handler(&vc->ctx->ctrls.handler,
+ sensor->ctrl_handler, NULL);
}
static const struct media_entity_operations fimc_sd_media_ops = {
@@ -1789,12 +1780,16 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
ret = vb2_queue_init(q);
if (ret)
- goto err_ent;
+ goto err_free_ctx;
vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
if (ret)
- goto err_ent;
+ goto err_free_ctx;
+
+ ret = fimc_ctrls_create(ctx);
+ if (ret)
+ goto err_me_cleanup;
/*
* For proper order of acquiring/releasing the video
* and the graph mutex.
@@ -1804,7 +1799,7 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
if (ret)
- goto err_vd;
+ goto err_ctrl_free;
v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
vfd->name, video_device_node_name(vfd));
@@ -1812,9 +1807,11 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
vfd->ctrl_handler = &ctx->ctrls.handler;
return 0;
-err_vd:
+err_ctrl_free:
+ fimc_ctrls_delete(ctx);
+err_me_cleanup:
media_entity_cleanup(&vfd->entity);
-err_ent:
+err_free_ctx:
kfree(ctx);
return ret;
}
@@ -1856,6 +1853,7 @@ static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
if (video_is_registered(vdev)) {
video_unregister_device(vdev);
media_entity_cleanup(&vdev->entity);
+ fimc_ctrls_delete(fimc->vid_cap.ctx);
fimc->pipeline_ops = NULL;
}
kfree(fimc->vid_cap.ctx);
@@ -303,6 +303,8 @@ struct fimc_m2m_device {
* @refcnt: driver's private reference counter
* @input: capture input type, grp_id of the attached subdev
* @user_subdev_api: true if subdevs are not configured by the host driver
+ * @inh_sensor_ctrls: a flag indicating v4l2 controls are inherited from
+ * an image sensor subdev
*/
struct fimc_vid_cap {
struct fimc_ctx *ctx;
@@ -326,6 +328,7 @@ struct fimc_vid_cap {
int refcnt;
u32 input;
bool user_subdev_api;
+ bool inh_sensor_ctrls;
};
/**
@@ -1272,8 +1272,6 @@ static int fimc_md_link_notify(struct media_pad *source,
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
if (ref_count > 0) {
ret = __fimc_pipeline_close(pipeline);
- if (!ret && fimc)
- fimc_ctrls_delete(fimc->vid_cap.ctx);
}
for (i = 0; i < IDX_MAX; i++)
pipeline->subdevs[i] = NULL;
@@ -1285,8 +1283,6 @@ static int fimc_md_link_notify(struct media_pad *source,
*/
ret = __fimc_pipeline_open(pipeline,
source->entity, true);
- if (!ret && fimc)
- ret = fimc_capture_ctrls_create(fimc);
}
mutex_unlock(lock);