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[media] v4l2: Add standard controls for FM receivers

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This commit introduces new class of standard controls
V4L2_CTRL_CLASS_FM_RX. This class is intended to all controls
pertaining to FM receiver chips. Also, two controls belonging to said
class are added as a part of this commit: V4L2_CID_TUNE_DEEMPHASIS and
V4L2_CID_RDS_RECEPTION.
This patch is based on the code found in the patch by Manjunatha Halli [1]
[1] http://lists-archives.com/linux-kernel/27641307-new-control-class-and-features-for-fm-rx.html

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Andrey Smirnov 2013-03-26 22:47:23 -03:00 • committed by Mauro Carvalho Chehab
parent af720c7c41
commit aec330a8cb
2 changed files with 24 additions and 3 deletions
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13
include/uapi/linux/v4l2-controls.h
View file

@ -59,6 +59,7 @@
#define V4L2_CTRL_CLASS_IMAGE_SOURCE 0x009e0000 /* Image source controls */
#define V4L2_CTRL_CLASS_IMAGE_PROC 0x009f0000 /* Image processing controls */
#define V4L2_CTRL_CLASS_DV 0x00a00000 /* Digital Video controls */
#define V4L2_CTRL_CLASS_FM_RX 0x00a10000 /* Digital Video controls */
/* User-class control IDs */
@ -835,4 +836,16 @@ enum v4l2_dv_rgb_range {
#define V4L2_CID_DV_RX_POWER_PRESENT (V4L2_CID_DV_CLASS_BASE + 100)
#define V4L2_CID_DV_RX_RGB_RANGE (V4L2_CID_DV_CLASS_BASE + 101)
#define V4L2_CID_FM_RX_CLASS_BASE (V4L2_CTRL_CLASS_FM_RX | 0x900)
#define V4L2_CID_FM_RX_CLASS (V4L2_CTRL_CLASS_FM_RX | 1)
#define V4L2_CID_TUNE_DEEMPHASIS (V4L2_CID_FM_RX_CLASS_BASE + 1)
enum v4l2_deemphasis {
V4L2_DEEMPHASIS_DISABLED = V4L2_PREEMPHASIS_DISABLED,
V4L2_DEEMPHASIS_50_uS = V4L2_PREEMPHASIS_50_uS,
V4L2_DEEMPHASIS_75_uS = V4L2_PREEMPHASIS_75_uS,
};
#define V4L2_CID_RDS_RECEPTION (V4L2_CID_FM_RX_CLASS_BASE + 2)
#endif