static DEFINE_MUTEX(list_lock);
static DEFINE_MUTEX(video_lock);
-const static struct soc_camera_data_format*
-format_by_fourcc(struct soc_camera_device *icd, unsigned int fourcc)
+const struct soc_camera_data_format *soc_camera_format_by_fourcc(
+ struct soc_camera_device *icd, unsigned int fourcc)
{
unsigned int i;
return icd->formats + i;
return NULL;
}
+EXPORT_SYMBOL(soc_camera_format_by_fourcc);
+
+const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
+ struct soc_camera_device *icd, unsigned int fourcc)
+{
+ unsigned int i;
+
+ for (i = 0; i < icd->num_user_formats; i++)
+ if (icd->user_formats[i].host_fmt->fourcc == fourcc)
+ return icd->user_formats + i;
+ return NULL;
+}
+EXPORT_SYMBOL(soc_camera_xlate_by_fourcc);
+
+/**
+ * soc_camera_apply_sensor_flags() - apply platform SOCAM_SENSOR_INVERT_* flags
+ * @icl: camera platform parameters
+ * @flags: flags to be inverted according to platform configuration
+ * @return: resulting flags
+ */
+unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
+ unsigned long flags)
+{
+ unsigned long f;
+
+ /* If only one of the two polarities is supported, switch to the opposite */
+ if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) {
+ f = flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW);
+ if (f == SOCAM_HSYNC_ACTIVE_HIGH || f == SOCAM_HSYNC_ACTIVE_LOW)
+ flags ^= SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW;
+ }
+
+ if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) {
+ f = flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW);
+ if (f == SOCAM_VSYNC_ACTIVE_HIGH || f == SOCAM_VSYNC_ACTIVE_LOW)
+ flags ^= SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW;
+ }
+
+ if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) {
+ f = flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING);
+ if (f == SOCAM_PCLK_SAMPLE_RISING || f == SOCAM_PCLK_SAMPLE_FALLING)
+ flags ^= SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING;
+ }
+
+ return flags;
+}
+EXPORT_SYMBOL(soc_camera_apply_sensor_flags);
static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
+ struct v4l2_format *f)
{
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
struct soc_camera_host *ici =
to_soc_camera_host(icd->dev.parent);
enum v4l2_field field;
- const struct soc_camera_data_format *fmt;
int ret;
WARN_ON(priv != file->private_data);
- fmt = format_by_fourcc(icd, f->fmt.pix.pixelformat);
- if (!fmt) {
- dev_dbg(&icd->dev, "invalid format 0x%08x\n",
- f->fmt.pix.pixelformat);
- return -EINVAL;
- }
-
- dev_dbg(&icd->dev, "fmt: 0x%08x\n", fmt->fourcc);
-
+ /*
+ * TODO: this might also have to migrate to host-drivers, if anyone
+ * wishes to support other fields
+ */
field = f->fmt.pix.field;
if (field == V4L2_FIELD_ANY) {
- field = V4L2_FIELD_NONE;
- } else if (V4L2_FIELD_NONE != field) {
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ } else if (field != V4L2_FIELD_NONE) {
dev_err(&icd->dev, "Field type invalid.\n");
return -EINVAL;
}
- /* test physical bus parameters */
- ret = ici->ops->try_bus_param(icd, f->fmt.pix.pixelformat);
- if (ret)
- return ret;
-
/* limit format to hardware capabilities */
- ret = ici->ops->try_fmt_cap(icd, f);
-
- /* calculate missing fields */
- f->fmt.pix.field = field;
- f->fmt.pix.bytesperline =
- (f->fmt.pix.width * fmt->depth) >> 3;
- f->fmt.pix.sizeimage =
- f->fmt.pix.height * f->fmt.pix.bytesperline;
+ ret = ici->ops->try_fmt(icd, f);
return ret;
}
return videobuf_dqbuf(&icf->vb_vidq, p, file->f_flags & O_NONBLOCK);
}
+static int soc_camera_init_user_formats(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ int i, fmts = 0;
+
+ if (!ici->ops->get_formats)
+ /*
+ * Fallback mode - the host will have to serve all
+ * sensor-provided formats one-to-one to the user
+ */
+ fmts = icd->num_formats;
+ else
+ /*
+ * First pass - only count formats this host-sensor
+ * configuration can provide
+ */
+ for (i = 0; i < icd->num_formats; i++)
+ fmts += ici->ops->get_formats(icd, i, NULL);
+
+ if (!fmts)
+ return -ENXIO;
+
+ icd->user_formats =
+ vmalloc(fmts * sizeof(struct soc_camera_format_xlate));
+ if (!icd->user_formats)
+ return -ENOMEM;
+
+ icd->num_user_formats = fmts;
+ fmts = 0;
+
+ dev_dbg(&icd->dev, "Found %d supported formats.\n", fmts);
+
+ /* Second pass - actually fill data formats */
+ for (i = 0; i < icd->num_formats; i++)
+ if (!ici->ops->get_formats) {
+ icd->user_formats[i].host_fmt = icd->formats + i;
+ icd->user_formats[i].cam_fmt = icd->formats + i;
+ icd->user_formats[i].buswidth = icd->formats[i].depth;
+ } else {
+ fmts += ici->ops->get_formats(icd, i,
+ &icd->user_formats[fmts]);
+ }
+
+ icd->current_fmt = icd->user_formats[0].host_fmt;
+
+ return 0;
+}
+
+static void soc_camera_free_user_formats(struct soc_camera_device *icd)
+{
+ vfree(icd->user_formats);
+}
+
static int soc_camera_open(struct inode *inode, struct file *file)
{
struct video_device *vdev;
/* Now we really have to activate the camera */
if (icd->use_count == 1) {
+ ret = soc_camera_init_user_formats(icd);
+ if (ret < 0)
+ goto eiufmt;
ret = ici->ops->add(icd);
if (ret < 0) {
dev_err(&icd->dev, "Couldn't activate the camera: %d\n", ret);
- icd->use_count--;
goto eiciadd;
}
}
/* All errors are entered with the video_lock held */
eiciadd:
+ soc_camera_free_user_formats(icd);
+eiufmt:
+ icd->use_count--;
module_put(ici->ops->owner);
emgi:
module_put(icd->ops->owner);
mutex_lock(&video_lock);
icd->use_count--;
- if (!icd->use_count)
+ if (!icd->use_count) {
ici->ops->remove(icd);
+ soc_camera_free_user_formats(icd);
+ }
module_put(icd->ops->owner);
module_put(ici->ops->owner);
mutex_unlock(&video_lock);
}
static ssize_t soc_camera_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
+ size_t count, loff_t *ppos)
{
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
return ici->ops->poll(file, pt);
}
-
static struct file_operations soc_camera_fops = {
.owner = THIS_MODULE,
.open = soc_camera_open,
.llseek = no_llseek,
};
-
static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
+ struct v4l2_format *f)
{
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
struct soc_camera_host *ici =
to_soc_camera_host(icd->dev.parent);
+ __u32 pixfmt = f->fmt.pix.pixelformat;
int ret;
struct v4l2_rect rect;
- const static struct soc_camera_data_format *data_fmt;
WARN_ON(priv != file->private_data);
- data_fmt = format_by_fourcc(icd, f->fmt.pix.pixelformat);
- if (!data_fmt)
- return -EINVAL;
-
- /* buswidth may be further adjusted by the ici */
- icd->buswidth = data_fmt->depth;
-
- ret = soc_camera_try_fmt_vid_cap(file, icf, f);
+ ret = soc_camera_try_fmt_vid_cap(file, priv, f);
if (ret < 0)
return ret;
rect.top = icd->y_current;
rect.width = f->fmt.pix.width;
rect.height = f->fmt.pix.height;
- ret = ici->ops->set_fmt_cap(icd, f->fmt.pix.pixelformat, &rect);
- if (ret < 0)
+ ret = ici->ops->set_fmt(icd, f->fmt.pix.pixelformat, &rect);
+ if (ret < 0) {
return ret;
+ } else if (!icd->current_fmt ||
+ icd->current_fmt->fourcc != pixfmt) {
+ dev_err(&ici->dev,
+ "Host driver hasn't set up current format correctly!\n");
+ return -EINVAL;
+ }
- icd->current_fmt = data_fmt;
icd->width = rect.width;
icd->height = rect.height;
icf->vb_vidq.field = f->fmt.pix.field;
- if (V4L2_BUF_TYPE_VIDEO_CAPTURE != f->type)
+ if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
dev_warn(&icd->dev, "Attention! Wrong buf-type %d\n",
f->type);
icd->width, icd->height);
/* set physical bus parameters */
- return ici->ops->set_bus_param(icd, f->fmt.pix.pixelformat);
+ return ici->ops->set_bus_param(icd, pixfmt);
}
static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_fmtdesc *f)
+ struct v4l2_fmtdesc *f)
{
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
WARN_ON(priv != file->private_data);
- if (f->index >= icd->num_formats)
+ if (f->index >= icd->num_user_formats)
return -EINVAL;
- format = &icd->formats[f->index];
+ format = icd->user_formats[f->index].host_fmt;
strlcpy(f->description, format->name, sizeof(f->description));
f->pixelformat = format->fourcc;
}
static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
+ struct v4l2_format *f)
{
struct soc_camera_file *icf = file->private_data;
struct soc_camera_device *icd = icf->icd;
f->fmt.pix.height = icd->height;
f->fmt.pix.field = icf->vb_vidq.field;
f->fmt.pix.pixelformat = icd->current_fmt->fourcc;
- f->fmt.pix.bytesperline =
- (f->fmt.pix.width * icd->current_fmt->depth) >> 3;
- f->fmt.pix.sizeimage =
- f->fmt.pix.height * f->fmt.pix.bytesperline;
+ f->fmt.pix.bytesperline = f->fmt.pix.width *
+ DIV_ROUND_UP(icd->current_fmt->depth, 8);
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
dev_dbg(&icd->dev, "current_fmt->fourcc: 0x%08x\n",
icd->current_fmt->fourcc);
return 0;
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- ret = ici->ops->set_fmt_cap(icd, 0, &a->c);
+ ret = ici->ops->set_fmt(icd, 0, &a->c);
if (!ret) {
icd->width = a->c.width;
icd->height = a->c.height;
return -EINVAL;
/* Number might be equal to the platform device ID */
- sprintf(ici->dev.bus_id, "camera_host%d", ici->nr);
+ dev_set_name(&ici->dev, "camera_host%d", ici->nr);
mutex_lock(&list_lock);
list_for_each_entry(ix, &hosts, list) {
icd->devnum = num;
icd->dev.bus = &soc_camera_bus_type;
- snprintf(icd->dev.bus_id, sizeof(icd->dev.bus_id),
- "%u-%u", icd->iface, icd->devnum);
+ dev_set_name(&icd->dev, "%u-%u", icd->iface, icd->devnum);
icd->dev.release = dummy_release;
vdev->minor = -1;
vdev->tvnorms = V4L2_STD_UNKNOWN,
- icd->current_fmt = &icd->formats[0];
-
err = video_register_device(vdev, VFL_TYPE_GRABBER, vdev->minor);
if (err < 0) {
dev_err(vdev->parent, "video_register_device failed\n");
projects / deliverable / linux.git / blobdiff