On Thu May 3 2012 09:08:57 Hans Verkuil wrote:
> Just a few more minor notes:
>
> On Wed May 2 2012 23:42:28 manjunatha_halli@xxxxxx wrote:
> > From: Manjunatha Halli <x0130808@xxxxxx>
> >
> > This patch creates new ctrl class for FM RX and adds new CID's for
> > below FM features,
> > 1) De-Emphasis filter mode
> > 2) RDS AF switch
> >
> > Also this patch adds a field for band selection in struct v4l2_hw_freq_seek
> >
> > Signed-off-by: Manjunatha Halli <x0130808@xxxxxx>
> > ---
> > drivers/media/video/v4l2-ctrls.c | 17 +++++++++++++++++
> > include/linux/videodev2.h | 11 ++++++++++-
> > 2 files changed, 27 insertions(+), 1 deletions(-)
> >
> > diff --git a/drivers/media/video/v4l2-ctrls.c b/drivers/media/video/v4l2-ctrls.c
> > index 18015c0..e1bba7d 100644
> > --- a/drivers/media/video/v4l2-ctrls.c
> > +++ b/drivers/media/video/v4l2-ctrls.c
> > @@ -372,6 +372,12 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
> > NULL,
> > };
> >
> > + static const char * const tune_deemphasis[] = {
> > + "No deemphasis",
> > + "50 useconds",
> > + "75 useconds",
> > + NULL,
> > + };
>
> I suggest that we re-use tune_preemphasis[] here. Just replace the first
> entry from "No Preemphasis" to "None" to make it generic.
>
> Rename tune_preemphasis[] to tune_emphasis[] as well.
>
> > switch (id) {
> > case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
> > return mpeg_audio_sampling_freq;
> > @@ -414,6 +420,8 @@ const char * const *v4l2_ctrl_get_menu(u32 id)
> > return colorfx;
> > case V4L2_CID_TUNE_PREEMPHASIS:
> > return tune_preemphasis;
> > + case V4L2_CID_TUNE_DEEMPHASIS:
> > + return tune_deemphasis;
> > case V4L2_CID_FLASH_LED_MODE:
> > return flash_led_mode;
> > case V4L2_CID_FLASH_STROBE_SOURCE:
> > @@ -644,6 +652,12 @@ const char *v4l2_ctrl_get_name(u32 id)
> > case V4L2_CID_JPEG_COMPRESSION_QUALITY: return "Compression Quality";
> > case V4L2_CID_JPEG_ACTIVE_MARKER: return "Active Markers";
> >
> > + /* FM Radio Receiver control */
> > + /* Keep the order of the 'case's the same as in videodev2.h! */
> > + case V4L2_CID_FM_RX_CLASS: return "FM Radio Receiver Controls";
> > + case V4L2_CID_RDS_AF_SWITCH: return "FM RX RDS AF switch";
>
> I would call this "RDS AF Switch" or perhaps even better: "RDS Auto-Frequency Switch"
Sorry, that should have been: "RDS Alternate Frequency Switch".
Regards,
Hans
>
> > + case V4L2_CID_TUNE_DEEMPHASIS: return "FM RX De-emphasis settings";
>
> Rename to "De-Emphasis" to be consistent with the existing "Pre-Emphasis" string.
>
> Regards,
>
> Hans
>
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