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>

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;
 

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) {

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 */

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