RE: [PATCH] [media] v4l: soc-camera: add enum-frame-size ioctl

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Hi Guennadi, Hans,

I update this patch, I use enum_framesizes instead of
enum_mbus_fsizes, which is already defined in v4l2-subdev.h,
so, do not need to modify v4l2-subdev.h now.

Are you ok with it?

-Qing

-----Original Message-----
From: Qing Xu [mailto:qingx@xxxxxxxxxxx]
Sent: 2011年1月21日 9:48
To: g.liakhovetski@xxxxxx
Cc: linux-media@xxxxxxxxxxxxxxx; Qing Xu
Subject: [PATCH] [media] v4l: soc-camera: add enum-frame-size ioctl

add vidioc_enum_framesizes implementation, follow default_g_parm()
and g_mbus_fmt() method

Signed-off-by: Qing Xu <qingx@xxxxxxxxxxx>
---
 drivers/media/video/soc_camera.c |   37 +++++++++++++++++++++++++++++++++++++
 include/media/soc_camera.h       |    1 +
 2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
index 052bd6d..7290107 100644
--- a/drivers/media/video/soc_camera.c
+++ b/drivers/media/video/soc_camera.c
@@ -145,6 +145,15 @@ static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a)
        return v4l2_subdev_call(sd, core, s_std, *a);
 }

+static int soc_camera_enum_fsizes(struct file *file, void *fh,
+                                        struct v4l2_frmsizeenum *fsize)
+{
+       struct soc_camera_device *icd = file->private_data;
+       struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+
+       return ici->ops->enum_fsizes(icd, fsize);
+}
+
 static int soc_camera_reqbufs(struct file *file, void *priv,
                              struct v4l2_requestbuffers *p)
 {
@@ -1160,6 +1169,31 @@ static int default_s_parm(struct soc_camera_device *icd,
        return v4l2_subdev_call(sd, video, s_parm, parm);
 }

+static int default_enum_fsizes(struct soc_camera_device *icd,
+                         struct v4l2_frmsizeenum *fsize)
+{
+       int ret;
+       struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+       const struct soc_camera_format_xlate *xlate;
+       __u32 pixfmt = fsize->pixel_format;
+       struct v4l2_frmsizeenum fsize_mbus = *fsize;
+
+       xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+       if (!xlate)
+               return -EINVAL;
+       /* map xlate-code to pixel_format, sensor only handle xlate-code*/
+       fsize_mbus.pixel_format = xlate->code;
+
+       ret = v4l2_subdev_call(sd, video, enum_framesizes, &fsize_mbus);
+       if (ret < 0)
+               return ret;
+
+       *fsize = fsize_mbus;
+       fsize->pixel_format = pixfmt;
+
+       return 0;
+}
+
 static void soc_camera_device_init(struct device *dev, void *pdata)
 {
        dev->platform_data      = pdata;
@@ -1195,6 +1229,8 @@ int soc_camera_host_register(struct soc_camera_host *ici)
                ici->ops->set_parm = default_s_parm;
        if (!ici->ops->get_parm)
                ici->ops->get_parm = default_g_parm;
+       if (!ici->ops->enum_fsizes)
+               ici->ops->enum_fsizes = default_enum_fsizes;

        mutex_lock(&list_lock);
        list_for_each_entry(ix, &hosts, list) {
@@ -1302,6 +1338,7 @@ static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = {
        .vidioc_g_input          = soc_camera_g_input,
        .vidioc_s_input          = soc_camera_s_input,
        .vidioc_s_std            = soc_camera_s_std,
+       .vidioc_enum_framesizes  = soc_camera_enum_fsizes,
        .vidioc_reqbufs          = soc_camera_reqbufs,
        .vidioc_try_fmt_vid_cap  = soc_camera_try_fmt_vid_cap,
        .vidioc_querybuf         = soc_camera_querybuf,
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index 86e3631..6e4800c 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -85,6 +85,7 @@ struct soc_camera_host_ops {
        int (*set_ctrl)(struct soc_camera_device *, struct v4l2_control *);
        int (*get_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
        int (*set_parm)(struct soc_camera_device *, struct v4l2_streamparm *);
+       int (*enum_fsizes)(struct soc_camera_device *, struct v4l2_frmsizeenum *);
        unsigned int (*poll)(struct file *, poll_table *);
        const struct v4l2_queryctrl *controls;
        int num_controls;
--
1.6.3.3

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