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[media] doc-rst: add documentation for si476x
Convert it to ReST and add to media/v4l-drivers book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Mauro Carvalho Chehab
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b299357065
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f1668f1d13
@ -36,4 +36,6 @@ License".
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saa7134
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sh_mobile_ceu_camera
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si470x
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si4713
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si476x
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zr364xx
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@ -27,159 +27,118 @@ The drivers exposes following files:
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information. The contents of the file is binary data of the
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following layout:
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Offset | Name | Description
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====================================================================
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0x00 | blend_int | Flag, set when stereo separation has
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| | crossed below the blend threshold
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--------------------------------------------------------------------
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0x01 | hblend_int | Flag, set when HiBlend cutoff
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| | frequency is lower than threshold
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--------------------------------------------------------------------
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0x02 | hicut_int | Flag, set when HiCut cutoff
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| | frequency is lower than threshold
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--------------------------------------------------------------------
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0x03 | chbw_int | Flag, set when channel filter
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| | bandwidth is less than threshold
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--------------------------------------------------------------------
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0x04 | softmute_int | Flag indicating that softmute
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| | attenuation has increased above
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| | softmute threshold
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--------------------------------------------------------------------
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0x05 | smute | 0 - Audio is not soft muted
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| | 1 - Audio is soft muted
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--------------------------------------------------------------------
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0x06 | smattn | Soft mute attenuation level in dB
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--------------------------------------------------------------------
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0x07 | chbw | Channel filter bandwidth in kHz
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--------------------------------------------------------------------
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0x08 | hicut | HiCut cutoff frequency in units of
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| | 100Hz
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--------------------------------------------------------------------
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0x09 | hiblend | HiBlend cutoff frequency in units
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| | of 100 Hz
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--------------------------------------------------------------------
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0x10 | pilot | 0 - Stereo pilot is not present
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| | 1 - Stereo pilot is present
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--------------------------------------------------------------------
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0x11 | stblend | Stereo blend in %
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--------------------------------------------------------------------
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============= ============== ====================================
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Offset Name Description
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============= ============== ====================================
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0x00 blend_int Flag, set when stereo separation has
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crossed below the blend threshold
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0x01 hblend_int Flag, set when HiBlend cutoff
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frequency is lower than threshold
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0x02 hicut_int Flag, set when HiCut cutoff
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frequency is lower than threshold
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0x03 chbw_int Flag, set when channel filter
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bandwidth is less than threshold
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0x04 softmute_int Flag indicating that softmute
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attenuation has increased above
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softmute threshold
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0x05 smute 0 - Audio is not soft muted
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1 - Audio is soft muted
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0x06 smattn Soft mute attenuation level in dB
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0x07 chbw Channel filter bandwidth in kHz
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0x08 hicut HiCut cutoff frequency in units of
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100Hz
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0x09 hiblend HiBlend cutoff frequency in units
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of 100 Hz
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0x10 pilot 0 - Stereo pilot is not present
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1 - Stereo pilot is present
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0x11 stblend Stereo blend in %
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============= ============== ====================================
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* /sys/kernel/debug/<device-name>/rds_blckcnt
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This file contains statistics about RDS receptions. It's binary data
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has the following layout:
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Offset | Name | Description
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====================================================================
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0x00 | expected | Number of expected RDS blocks
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--------------------------------------------------------------------
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0x02 | received | Number of received RDS blocks
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--------------------------------------------------------------------
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0x04 | uncorrectable | Number of uncorrectable RDS blocks
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--------------------------------------------------------------------
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============= ============== ====================================
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Offset Name Description
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============= ============== ====================================
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0x00 expected Number of expected RDS blocks
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0x02 received Number of received RDS blocks
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0x04 uncorrectable Number of uncorrectable RDS blocks
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============= ============== ====================================
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* /sys/kernel/debug/<device-name>/agc
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This file contains information about parameters pertaining to
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AGC(Automatic Gain Control)
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The layout is:
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Offset | Name | Description
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====================================================================
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0x00 | mxhi | 0 - FM Mixer PD high threshold is
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| | not tripped
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| | 1 - FM Mixer PD high threshold is
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| | tripped
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--------------------------------------------------------------------
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0x01 | mxlo | ditto for FM Mixer PD low
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--------------------------------------------------------------------
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0x02 | lnahi | ditto for FM LNA PD high
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--------------------------------------------------------------------
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0x03 | lnalo | ditto for FM LNA PD low
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--------------------------------------------------------------------
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0x04 | fmagc1 | FMAGC1 attenuator resistance
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| | (see datasheet for more detail)
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--------------------------------------------------------------------
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0x05 | fmagc2 | ditto for FMAGC2
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--------------------------------------------------------------------
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0x06 | pgagain | PGA gain in dB
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--------------------------------------------------------------------
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0x07 | fmwblang | FM/WB LNA Gain in dB
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--------------------------------------------------------------------
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============= ============== ====================================
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Offset Name Description
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============= ============== ====================================
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0x00 mxhi 0 - FM Mixer PD high threshold is
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not tripped
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1 - FM Mixer PD high threshold is
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tripped
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0x01 mxlo ditto for FM Mixer PD low
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0x02 lnahi ditto for FM LNA PD high
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0x03 lnalo ditto for FM LNA PD low
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0x04 fmagc1 FMAGC1 attenuator resistance
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(see datasheet for more detail)
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0x05 fmagc2 ditto for FMAGC2
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0x06 pgagain PGA gain in dB
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0x07 fmwblang FM/WB LNA Gain in dB
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============= ============== ====================================
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* /sys/kernel/debug/<device-name>/rsq
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This file contains information about parameters pertaining to
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RSQ(Received Signal Quality)
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The layout is:
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Offset | Name | Description
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====================================================================
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0x00 | multhint | 0 - multipath value has not crossed
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| | the Multipath high threshold
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| | 1 - multipath value has crossed
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| | the Multipath high threshold
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--------------------------------------------------------------------
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0x01 | multlint | ditto for Multipath low threshold
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--------------------------------------------------------------------
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0x02 | snrhint | 0 - received signal's SNR has not
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| | crossed high threshold
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| | 1 - received signal's SNR has
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| | crossed high threshold
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--------------------------------------------------------------------
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0x03 | snrlint | ditto for low threshold
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--------------------------------------------------------------------
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0x04 | rssihint | ditto for RSSI high threshold
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--------------------------------------------------------------------
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0x05 | rssilint | ditto for RSSI low threshold
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--------------------------------------------------------------------
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0x06 | bltf | Flag indicating if seek command
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| | reached/wrapped seek band limit
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--------------------------------------------------------------------
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0x07 | snr_ready | Indicates that SNR metrics is ready
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--------------------------------------------------------------------
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0x08 | rssiready | ditto for RSSI metrics
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--------------------------------------------------------------------
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0x09 | injside | 0 - Low-side injection is being used
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| | 1 - High-side injection is used
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--------------------------------------------------------------------
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0x10 | afcrl | Flag indicating if AFC rails
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--------------------------------------------------------------------
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0x11 | valid | Flag indicating if channel is valid
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--------------------------------------------------------------------
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0x12 | readfreq | Current tuned frequency
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--------------------------------------------------------------------
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0x14 | freqoff | Signed frequency offset in units of
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| | 2ppm
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--------------------------------------------------------------------
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0x15 | rssi | Signed value of RSSI in dBuV
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--------------------------------------------------------------------
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0x16 | snr | Signed RF SNR in dB
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--------------------------------------------------------------------
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0x17 | issi | Signed Image Strength Signal
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| | indicator
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--------------------------------------------------------------------
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0x18 | lassi | Signed Low side adjacent Channel
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| | Strength indicator
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--------------------------------------------------------------------
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0x19 | hassi | ditto fpr High side
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--------------------------------------------------------------------
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0x20 | mult | Multipath indicator
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--------------------------------------------------------------------
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0x21 | dev | Frequency deviation
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--------------------------------------------------------------------
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0x24 | assi | Adjacent channel SSI
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--------------------------------------------------------------------
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0x25 | usn | Ultrasonic noise indicator
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--------------------------------------------------------------------
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0x26 | pilotdev | Pilot deviation in units of 100 Hz
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--------------------------------------------------------------------
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0x27 | rdsdev | ditto for RDS
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--------------------------------------------------------------------
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0x28 | assidev | ditto for ASSI
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--------------------------------------------------------------------
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0x29 | strongdev | Frequency deviation
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--------------------------------------------------------------------
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0x30 | rdspi | RDS PI code
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--------------------------------------------------------------------
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============= ============== ====================================
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Offset Name Description
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============= ============== ====================================
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0x00 multhint 0 - multipath value has not crossed
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the Multipath high threshold
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1 - multipath value has crossed
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the Multipath high threshold
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0x01 multlint ditto for Multipath low threshold
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0x02 snrhint 0 - received signal's SNR has not
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crossed high threshold
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1 - received signal's SNR has
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crossed high threshold
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0x03 snrlint ditto for low threshold
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0x04 rssihint ditto for RSSI high threshold
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0x05 rssilint ditto for RSSI low threshold
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0x06 bltf Flag indicating if seek command
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reached/wrapped seek band limit
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0x07 snr_ready Indicates that SNR metrics is ready
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0x08 rssiready ditto for RSSI metrics
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0x09 injside 0 - Low-side injection is being used
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1 - High-side injection is used
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0x10 afcrl Flag indicating if AFC rails
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0x11 valid Flag indicating if channel is valid
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0x12 readfreq Current tuned frequency
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0x14 freqoff Signed frequency offset in units of
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2ppm
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0x15 rssi Signed value of RSSI in dBuV
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0x16 snr Signed RF SNR in dB
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0x17 issi Signed Image Strength Signal
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indicator
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0x18 lassi Signed Low side adjacent Channel
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Strength indicator
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0x19 hassi ditto fpr High side
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0x20 mult Multipath indicator
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0x21 dev Frequency deviation
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0x24 assi Adjacent channel SSI
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0x25 usn Ultrasonic noise indicator
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0x26 pilotdev Pilot deviation in units of 100 Hz
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0x27 rdsdev ditto for RDS
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0x28 assidev ditto for ASSI
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0x29 strongdev Frequency deviation
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0x30 rdspi RDS PI code
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============= ============== ====================================
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* /sys/kernel/debug/<device-name>/rsq_primary
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This file contains information about parameters pertaining to
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