V4L/DVB (7942): Hardware frequency seek ioctl interface

Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

4 files changed, 25 insertions, 0 deletions

diff --git a/drivers/media/video/compat_ioctl32.c b/drivers/media/video/compat_ioctl32.c
index cefd1381e8de..54de0cd482e9 100644
--- a/drivers/media/video/compat_ioctl32.c
+++ b/drivers/media/video/compat_ioctl32.c
@@ -884,6 +884,7 @@ long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
         case VIDIOC_G_INPUT32:
         case VIDIOC_S_INPUT32:
         case VIDIOC_TRY_FMT32:
+        case VIDIOC_S_HW_FREQ_SEEK:
                 ret = do_video_ioctl(file, cmd, arg);
                 break;
 
diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c
index 7649860a388d..52c56678ee69 100644
--- a/drivers/media/video/videodev.c
+++ b/drivers/media/video/videodev.c
@@ -278,6 +278,7 @@ static const char *v4l2_ioctls[] = {
         [_IOC_NR(VIDIOC_DBG_G_REGISTER)]   = "VIDIOC_DBG_G_REGISTER",
 
         [_IOC_NR(VIDIOC_G_CHIP_IDENT)]     = "VIDIOC_G_CHIP_IDENT",
+        [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)]   = "VIDIOC_S_HW_FREQ_SEEK",
 #endif
 };
 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
@@ -1763,6 +1764,17 @@ static int __video_do_ioctl(struct inode *inode, struct file *file,
                 ret = vfd->vidioc_default(file, fh, cmd, arg);
                 break;
         }
+        case VIDIOC_S_HW_FREQ_SEEK:
+        {
+                struct v4l2_hw_freq_seek *p = arg;
+                if (!vfd->vidioc_s_hw_freq_seek)
+                        break;
+                dbgarg(cmd,
+                        "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n",
+                        p->tuner, p->type, p->seek_upward, p->wrap_around);
+                ret = vfd->vidioc_s_hw_freq_seek(file, fh, p);
+                break;
+        }
         } /* switch */
 
         if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 4a535ea1e123..9385c823a978 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -246,6 +246,7 @@ struct v4l2_capability
 #define V4L2_CAP_SLICED_VBI_OUTPUT      0x00000080  /* Is a sliced VBI output device */
 #define V4L2_CAP_RDS_CAPTURE            0x00000100  /* RDS data capture */
 #define V4L2_CAP_VIDEO_OUTPUT_OVERLAY   0x00000200  /* Can do video output overlay */
+#define V4L2_CAP_HW_FREQ_SEEK           0x00000400  /* Can do hardware frequency seek  */
 
 #define V4L2_CAP_TUNER                  0x00010000  /* has a tuner */
 #define V4L2_CAP_AUDIO                  0x00020000  /* has audio support */
@@ -1156,6 +1157,14 @@ struct v4l2_frequency
         __u32                 reserved[8];
 };
 
+struct v4l2_hw_freq_seek {
+        __u32                 tuner;
+        enum v4l2_tuner_type  type;
+        __u32                 seek_upward;
+        __u32                 wrap_around;
+        __u32                 reserved[8];
+};
+
 /*
  *      A U D I O
  */
@@ -1441,6 +1450,7 @@ struct v4l2_chip_ident {
 
 #define VIDIOC_G_CHIP_IDENT     _IOWR ('V', 81, struct v4l2_chip_ident)
 #endif
+#define VIDIOC_S_HW_FREQ_SEEK   _IOW  ('V', 82, struct v4l2_hw_freq_seek)
 
 #ifdef __OLD_VIDIOC_
 /* for compatibility, will go away some day */
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 859f7a6f6f67..53b651ac685a 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -306,6 +306,8 @@ struct video_device
         /* Log status ioctl */
         int (*vidioc_log_status)       (struct file *file, void *fh);
 
+        int (*vidioc_s_hw_freq_seek)   (struct file *file, void *fh,
+                                        struct v4l2_hw_freq_seek *a);
 
         /* Debugging ioctls */
 #ifdef CONFIG_VIDEO_ADV_DEBUG