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authorTrent Piepho <xyzzy@speakeasy.org>2006-10-29 13:35:39 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-12-10 08:51:09 -0200
commit19be685a4a5475ecdbbbb579458eeda890d27a96 (patch)
tree192c6c2fbeb1c3eea1561cef209cbc7226205a12 /drivers/media/dvb/frontends/lgdt330x_priv.h
parentdbb2e6392b4fe350e549cdc2d42cebf3b3574a6a (diff)
V4L/DVB (4789): Lgdt330x: SNR and signal strength reporting
Update the SNR calculations to use the new dvb_math log function, and add SNR calculations for all supported modulations for both lg dt3302 and dt3303. The QAM equations don't appear in the dt3302 datasheet, so the ones from the dt3303 datasheet were used. SNR returned is the actual value in dB as 8.8 fixed point. Reporting of real signal strength isn't supported, so rather than return 0, which confuses some software and users, a re-scaled SNR value is returned. Code originally by Rusty Scott. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Rusty Scott <rustys@ieee.org> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/frontends/lgdt330x_priv.h')
-rw-r--r--drivers/media/dvb/frontends/lgdt330x_priv.h15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/media/dvb/frontends/lgdt330x_priv.h b/drivers/media/dvb/frontends/lgdt330x_priv.h
index 59b7c5b9012..38c76695abf 100644
--- a/drivers/media/dvb/frontends/lgdt330x_priv.h
+++ b/drivers/media/dvb/frontends/lgdt330x_priv.h
@@ -51,14 +51,19 @@ enum I2C_REG {
AGC_RFIF_ACC2= 0x3b,
AGC_STATUS= 0x3f,
SYNC_STATUS_VSB= 0x43,
- EQPH_ERR0= 0x47,
- EQ_ERR1= 0x48,
- EQ_ERR2= 0x49,
- PH_ERR1= 0x4a,
- PH_ERR2= 0x4b,
DEMUX_CONTROL= 0x66,
+ LGDT3302_EQPH_ERR0= 0x47,
+ LGDT3302_EQ_ERR1= 0x48,
+ LGDT3302_EQ_ERR2= 0x49,
+ LGDT3302_PH_ERR1= 0x4a,
+ LGDT3302_PH_ERR2= 0x4b,
LGDT3302_PACKET_ERR_COUNTER1= 0x6a,
LGDT3302_PACKET_ERR_COUNTER2= 0x6b,
+ LGDT3303_EQPH_ERR0= 0x6e,
+ LGDT3303_EQ_ERR1= 0x6f,
+ LGDT3303_EQ_ERR2= 0x70,
+ LGDT3303_PH_ERR1= 0x71,
+ LGDT3303_PH_ERR2= 0x72,
LGDT3303_PACKET_ERR_COUNTER1= 0x8b,
LGDT3303_PACKET_ERR_COUNTER2= 0x8c,
};