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2006-12-10V4L/DVB (4789): Lgdt330x: SNR and signal strength reportingTrent Piepho1-5/+10
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>
2005-08-08[PATCH] dvb: lgdt330x frontend: some bug fixes & add lgdt3303 supportMichael Krufky1-3/+5
- Structural changes within lgdt330x driver, framework now supports both chips... tested OK on lgdt3302 and lgdt3303. - Add LG/TUA6034 dvb_pll_desc for ATSC with LG TDVS-H062F & DViCO FusionHDTV5. - Fixed LGDT330X signal strength: For now, always set it to 0. - Corrected LGDT330X boundary condition error in read_snr: dB calculation. Signed-off-by: Mac Michaels <wmichaels1@earthlink.net> Signed-off-by: Michael Krufky <mkrufky@m1k.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27[PATCH] dvb: rename lgdt3302 frontend module to lgdt330xMichael Krufky1-0/+70
Rename lgdt3302 to lgdt330x, to make way for the addition of lgdt3303 support in future revisions. I am changing the name of this module now so that hopefully the name will be changed before the release of 2.6.13 ... It wouldn't make sense to release 2.6.13 with the name lgdt3302 in it, which will only be renamed to lgdt330x in later versions. Signed-off-by: Michael Krufky <mkrufky@m1k.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>