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 | 16 +++++++++++++++-
2 files changed, 32 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,
+ };
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";
+ case V4L2_CID_TUNE_DEEMPHASIS: return "FM RX De-emphasis settings";
+
default:
return NULL;
}
@@ -688,6 +702,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:
+ case V4L2_CID_RDS_AF_SWITCH:
*type = V4L2_CTRL_TYPE_BOOLEAN;
*min = 0;
*max = *step = 1;
@@ -733,6 +748,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
+ case V4L2_CID_TUNE_DEEMPHASIS:
*type = V4L2_CTRL_TYPE_MENU;
break;
case V4L2_CID_RDS_TX_PS_NAME:
@@ -745,6 +761,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_FM_TX_CLASS:
case V4L2_CID_FLASH_CLASS:
case V4L2_CID_JPEG_CLASS:
+ case V4L2_CID_FM_RX_CLASS:
*type = V4L2_CTRL_TYPE_CTRL_CLASS;
/* You can neither read not write these */
*flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index c9c9a46..00ac1b7 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1137,6 +1137,7 @@ struct v4l2_ext_controls {
#define V4L2_CTRL_CLASS_FM_TX 0x009b0000 /* FM Modulator control class */
#define V4L2_CTRL_CLASS_FLASH 0x009c0000 /* Camera flash controls */
#define V4L2_CTRL_CLASS_JPEG 0x009d0000 /* JPEG-compression controls */
+#define V4L2_CTRL_CLASS_FM_RX 0x009e0000 /* FM Receiver control class */
#define V4L2_CTRL_ID_MASK (0x0fffffff)
#define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL)
@@ -1782,6 +1783,18 @@ enum v4l2_jpeg_chroma_subsampling {
#define V4L2_JPEG_ACTIVE_MARKER_DQT (1 << 17)
#define V4L2_JPEG_ACTIVE_MARKER_DHT (1 << 18)
+/* FM Receiver class control IDs */
+#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_RDS_AF_SWITCH (V4L2_CID_FM_RX_CLASS_BASE + 1)
+#define V4L2_CID_TUNE_DEEMPHASIS (V4L2_CID_FM_RX_CLASS_BASE + 2)
+enum v4l2_deemphasis {
+ V4L2_DEEMPHASIS_DISABLED = 0,
+ V4L2_DEEMPHASIS_50_uS = 1,
+ V4L2_DEEMPHASIS_75_uS = 2,
+};
+
/*
* T U N I N G
*/
@@ -1849,7 +1862,8 @@ struct v4l2_hw_freq_seek {
__u32 seek_upward;
__u32 wrap_around;
__u32 spacing;
- __u32 reserved[7];
+ __u32 fm_band;
+ __u32 reserved[6];
};
/*
--
1.7.4.1
--
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