V4L/DVB (9978): stkwebcam: Implement VIDIOC_ENUM_FRAMESIZES ioctl

This patch implements VIDIOC_ENUM_FRAMESIZES, it is used at least
by gstreamer.

Signed-off-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/media/video/stk-webcam.c b/drivers/media/video/stk-webcam.c
index e9eb6d754d5c..5566c2379d64 100644
--- a/drivers/media/video/stk-webcam.c
+++ b/drivers/media/video/stk-webcam.c
@@ -1262,6 +1262,25 @@ static int stk_vidioc_g_parm(struct file *filp,
         return 0;
 }
 
+static int stk_vidioc_enum_framesizes(struct file *filp,
+                void *priv, struct v4l2_frmsizeenum *frms)
+{
+        if (frms->index >= ARRAY_SIZE(stk_sizes))
+                return -EINVAL;
+        switch (frms->pixel_format) {
+        case V4L2_PIX_FMT_RGB565:
+        case V4L2_PIX_FMT_RGB565X:
+        case V4L2_PIX_FMT_UYVY:
+        case V4L2_PIX_FMT_YUYV:
+        case V4L2_PIX_FMT_SBGGR8:
+                frms->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+                frms->discrete.width = stk_sizes[frms->index].w;
+                frms->discrete.height = stk_sizes[frms->index].h;
+                return 0;
+        default: return -EINVAL;
+        }
+}
+
 static struct file_operations v4l_stk_fops = {
         .owner = THIS_MODULE,
         .open = v4l_stk_open,
@@ -1296,6 +1315,7 @@ static const struct v4l2_ioctl_ops v4l_stk_ioctl_ops = {
         .vidioc_g_ctrl = stk_vidioc_g_ctrl,
         .vidioc_s_ctrl = stk_vidioc_s_ctrl,
         .vidioc_g_parm = stk_vidioc_g_parm,
+        .vidioc_enum_framesizes = stk_vidioc_enum_framesizes,
 };
 
 static void stk_v4l_dev_release(struct video_device *vd)