Add volatile boolean control to indicate if tuner frequency synthesizer
is locked to requested frequency. That means tuner is able to receive
given frequency. Control is named as "PLL lock", since frequency
synthesizers are based of phase-locked-loop. Maybe more general name
could be wise still?
Cc: Mauro Carvalho Chehab <m.chehab@xxxxxxxxxxx>
Cc: Hans Verkuil <hverkuil@xxxxxxxxx>
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 5 +++++
include/uapi/linux/v4l2-controls.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index e44722b..dc6cba4 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -867,6 +867,7 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_IF_GAIN: return "IF Gain";
case V4L2_CID_BANDWIDTH_AUTO: return "Channel Bandwidth, Auto";
case V4L2_CID_BANDWIDTH: return "Channel Bandwidth";
+ case V4L2_CID_PLL_LOCK: return "PLL Lock";
default:
return NULL;
}
@@ -920,6 +921,7 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_MIXER_GAIN_AUTO:
case V4L2_CID_IF_GAIN_AUTO:
case V4L2_CID_BANDWIDTH_AUTO:
+ case V4L2_CID_PLL_LOCK:
*type = V4L2_CTRL_TYPE_BOOLEAN;
*min = 0;
*max = *step = 1;
@@ -1100,6 +1102,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_DV_RX_POWER_PRESENT:
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
break;
+ case V4L2_CID_PLL_LOCK:
+ *flags |= V4L2_CTRL_FLAG_VOLATILE;
+ break;
}
}
EXPORT_SYMBOL(v4l2_ctrl_fill);
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index cc488c3..06918c9 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -907,5 +907,6 @@ enum v4l2_deemphasis {
#define V4L2_CID_MIXER_GAIN (V4L2_CID_RF_TUNER_CLASS_BASE + 52)
#define V4L2_CID_IF_GAIN_AUTO (V4L2_CID_RF_TUNER_CLASS_BASE + 61)
#define V4L2_CID_IF_GAIN (V4L2_CID_RF_TUNER_CLASS_BASE + 62)
+#define V4L2_CID_PLL_LOCK (V4L2_CID_RF_TUNER_CLASS_BASE + 91)
#endif
--
1.8.5.3
--
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