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authorAntti Palosaari <crope@iki.fi>2014-01-24 23:44:26 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-03-05 15:46:56 -0300
commit80807fada4398d11ebd2bb28b3b49ca6a59e1260 (patch)
treed0ded0209d6a908fffa155509dab58f260ca5a0a /include/uapi/linux/v4l2-controls.h
parent851897a4adc42ad7b6327e4c64f599c07a6c5ebb (diff)
[media] v4l: add RF tuner gain controls
Modern silicon RF tuners used nowadays has many controllable gain stages on signal path. Usually, but not always, there is at least 3 gain stages. Also on some cases there could be multiple gain stages within the ones specified here. However, I think that having these three controllable gain stages offers enough fine-tuning for real use cases. 1) LNA gain. That is first gain just after antenna input. 2) Mixer gain. It is located quite middle of the signal path, where RF signal is down-converted to IF/BB. 3) IF gain. That is last gain in order to adjust output signal level to optimal level for receiving party (usually demodulator ADC). Each gain stage could be set rather often both manual or automatic (AGC) mode. Due to that add separate controls for controlling operation mode. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'include/uapi/linux/v4l2-controls.h')
-rw-r--r--include/uapi/linux/v4l2-controls.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index cda6fa0262f..e97101c1686 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -60,6 +60,7 @@
#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 /* FM Receiver controls */
+#define V4L2_CTRL_CLASS_RF_TUNER 0x00a20000 /* RF tuner controls */
/* User-class control IDs */
@@ -897,4 +898,14 @@ enum v4l2_deemphasis {
#define V4L2_CID_RDS_RECEPTION (V4L2_CID_FM_RX_CLASS_BASE + 2)
+#define V4L2_CID_RF_TUNER_CLASS_BASE (V4L2_CTRL_CLASS_RF_TUNER | 0x900)
+#define V4L2_CID_RF_TUNER_CLASS (V4L2_CTRL_CLASS_RF_TUNER | 1)
+
+#define V4L2_CID_RF_TUNER_LNA_GAIN_AUTO (V4L2_CID_RF_TUNER_CLASS_BASE + 1)
+#define V4L2_CID_RF_TUNER_LNA_GAIN (V4L2_CID_RF_TUNER_CLASS_BASE + 2)
+#define V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO (V4L2_CID_RF_TUNER_CLASS_BASE + 3)
+#define V4L2_CID_RF_TUNER_MIXER_GAIN (V4L2_CID_RF_TUNER_CLASS_BASE + 4)
+#define V4L2_CID_RF_TUNER_IF_GAIN_AUTO (V4L2_CID_RF_TUNER_CLASS_BASE + 5)
+#define V4L2_CID_RF_TUNER_IF_GAIN (V4L2_CID_RF_TUNER_CLASS_BASE + 6)
+
#endif