#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <linux/vmalloc.h>
static LIST_HEAD(devices);
static DEFINE_MUTEX(list_lock); /* Protects the list of hosts */
+static int soc_camera_power_set(struct soc_camera_device *icd,
+ struct soc_camera_link *icl,
+ int power_on)
+{
+ int ret;
+
+ if (power_on) {
+ ret = regulator_bulk_enable(icl->num_regulators,
+ icl->regulators);
+ if (ret < 0) {
+ dev_err(&icd->dev, "Cannot enable regulators\n");
+ return ret;
+ }
+
+ if (icl->power)
+ ret = icl->power(icd->pdev, power_on);
+ if (ret < 0) {
+ dev_err(&icd->dev,
+ "Platform failed to power-on the camera.\n");
+
+ regulator_bulk_disable(icl->num_regulators,
+ icl->regulators);
+ return ret;
+ }
+ } else {
+ ret = 0;
+ if (icl->power)
+ ret = icl->power(icd->pdev, 0);
+ if (ret < 0) {
+ dev_err(&icd->dev,
+ "Platform failed to power-off the camera.\n");
+ return ret;
+ }
+
+ ret = regulator_bulk_disable(icl->num_regulators,
+ icl->regulators);
+ if (ret < 0) {
+ dev_err(&icd->dev, "Cannot disable regulators\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
struct soc_camera_device *icd, unsigned int fourcc)
{
return -EINVAL;
}
- /*
- * Protect against icd->ops->remove() until we module_get() both
- * drivers.
- */
- mutex_lock(&icd->video_lock);
-
icd->use_count++;
/* Now we really have to activate the camera */
},
};
- if (icl->power) {
- ret = icl->power(icd->pdev, 1);
- if (ret < 0)
- goto epower;
- }
+ ret = soc_camera_power_set(icd, icl, 1);
+ if (ret < 0)
+ goto epower;
/* The camera could have been already on, try to reset */
if (icl->reset)
file->private_data = icd;
dev_dbg(&icd->dev, "camera device open\n");
- mutex_unlock(&icd->video_lock);
-
return 0;
/*
eresume:
ici->ops->remove(icd);
eiciadd:
- if (icl->power)
- icl->power(icd->pdev, 0);
+ soc_camera_power_set(icd, icl, 0);
epower:
icd->use_count--;
- mutex_unlock(&icd->video_lock);
module_put(ici->ops->owner);
return ret;
struct soc_camera_device *icd = file->private_data;
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
- mutex_lock(&icd->video_lock);
icd->use_count--;
if (!icd->use_count) {
struct soc_camera_link *icl = to_soc_camera_link(icd);
ici->ops->remove(icd);
- if (icl->power)
- icl->power(icd->pdev, 0);
+ soc_camera_power_set(icd, icl, 0);
}
if (icd->streamer == file)
icd->streamer = NULL;
- mutex_unlock(&icd->video_lock);
-
module_put(ici->ops->owner);
dev_dbg(&icd->dev, "camera device close\n");
.owner = THIS_MODULE,
.open = soc_camera_open,
.release = soc_camera_close,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = video_ioctl2,
.read = soc_camera_read,
.mmap = soc_camera_mmap,
.poll = soc_camera_poll,
if (icd->streamer && icd->streamer != file)
return -EBUSY;
- mutex_lock(&icd->vb_vidq.vb_lock);
-
if (icd->vb_vidq.bufs[0]) {
dev_err(&icd->dev, "S_FMT denied: queue initialised\n");
- ret = -EBUSY;
- goto unlock;
+ return -EBUSY;
}
ret = soc_camera_set_fmt(icd, f);
if (!ret && !icd->streamer)
icd->streamer = file;
-unlock:
- mutex_unlock(&icd->vb_vidq.vb_lock);
-
return ret;
}
if (icd->streamer != file)
return -EBUSY;
- mutex_lock(&icd->video_lock);
-
v4l2_subdev_call(sd, video, s_stream, 1);
/* This calls buf_queue from host driver's videobuf_queue_ops */
ret = videobuf_streamon(&icd->vb_vidq);
- mutex_unlock(&icd->video_lock);
-
return ret;
}
if (icd->streamer != file)
return -EBUSY;
- mutex_lock(&icd->video_lock);
-
/*
* This calls buf_release from host driver's videobuf_queue_ops for all
* remaining buffers. When the last buffer is freed, stop capture
v4l2_subdev_call(sd, video, s_stream, 0);
- mutex_unlock(&icd->video_lock);
-
return 0;
}
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
int ret;
- mutex_lock(&icd->vb_vidq.vb_lock);
ret = ici->ops->get_crop(icd, a);
- mutex_unlock(&icd->vb_vidq.vb_lock);
return ret;
}
dev_dbg(&icd->dev, "S_CROP(%ux%u@%u:%u)\n",
rect->width, rect->height, rect->left, rect->top);
- /* Cropping is allowed during a running capture, guard consistency */
- mutex_lock(&icd->vb_vidq.vb_lock);
-
/* If get_crop fails, we'll let host and / or client drivers decide */
ret = ici->ops->get_crop(icd, ¤t_crop);
ret = ici->ops->set_crop(icd, a);
}
- mutex_unlock(&icd->vb_vidq.vb_lock);
-
return ret;
}
dev_info(dev, "Probing %s\n", dev_name(dev));
- if (icl->power) {
- ret = icl->power(icd->pdev, 1);
- if (ret < 0) {
- dev_err(dev,
- "Platform failed to power-on the camera.\n");
- goto epower;
- }
- }
+ ret = regulator_bulk_get(icd->pdev, icl->num_regulators,
+ icl->regulators);
+ if (ret < 0)
+ goto ereg;
+
+ ret = soc_camera_power_set(icd, icl, 1);
+ if (ret < 0)
+ goto epower;
/* The camera could have been already on, try to reset */
if (icl->reset)
icd->field = V4L2_FIELD_ANY;
- /* ..._video_start() will create a device node, so we have to protect */
+ icd->vdev->lock = &icd->video_lock;
+
+ /*
+ * ..._video_start() will create a device node, video_register_device()
+ * itself is protected against concurrent open() calls, but we also have
+ * to protect our data.
+ */
mutex_lock(&icd->video_lock);
ret = soc_camera_video_start(icd);
ici->ops->remove(icd);
- if (icl->power)
- icl->power(icd->pdev, 0);
+ soc_camera_power_set(icd, icl, 0);
mutex_unlock(&icd->video_lock);
evdc:
ici->ops->remove(icd);
eadd:
- if (icl->power)
- icl->power(icd->pdev, 0);
+ soc_camera_power_set(icd, icl, 0);
epower:
+ regulator_bulk_free(icl->num_regulators, icl->regulators);
+ereg:
return ret;
}
BUG_ON(!dev->parent);
if (vdev) {
- mutex_lock(&icd->video_lock);
video_unregister_device(vdev);
icd->vdev = NULL;
- mutex_unlock(&icd->video_lock);
}
if (icl->board_info) {
}
soc_camera_free_user_formats(icd);
+ regulator_bulk_free(icl->num_regulators, icl->regulators);
+
return 0;
}
projects / mv-sheeva.git / blobdiff