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[media] au8522: Fix off-by-one in SNR table for QAM256

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The table of valid SNR values for QAM 256 is off by one, and as a result
if the SNR is oscillating between 40.0 and 39.9 dB, tools like azap show
it going back and forth between 40.0 and 0 (misleading some people,
including myself, to think signal lock is being lost or there is a
problem with register reads).

Fix the table so that 40.0 dB is properly represented.

Cc: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Devin Heitmueller 2012-08-06 22:46:52 -03:00 committed by Mauro Carvalho Chehab
parent a307cfa55e
commit b0c4878ebe
1 changed files with 48 additions and 48 deletions
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96
drivers/media/dvb/frontends/au8522_dig.c
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@ -157,54 +157,54 @@ static struct mse2snr_tab qam64_mse2snr_tab[] = {
/* QAM256 SNR lookup table */
static struct mse2snr_tab qam256_mse2snr_tab[] = {
{ 16, 0 },
{ 17, 400 },
{ 18, 398 },
{ 19, 396 },
{ 20, 394 },
{ 21, 392 },
{ 22, 390 },
{ 23, 388 },
{ 24, 386 },
{ 25, 384 },
{ 26, 382 },
{ 27, 380 },
{ 28, 379 },
{ 29, 378 },
{ 30, 377 },
{ 31, 376 },
{ 32, 375 },
{ 33, 374 },
{ 34, 373 },
{ 35, 372 },
{ 36, 371 },
{ 37, 370 },
{ 38, 362 },
{ 39, 354 },
{ 40, 346 },
{ 41, 338 },
{ 42, 330 },
{ 43, 328 },
{ 44, 326 },
{ 45, 324 },
{ 46, 322 },
{ 47, 320 },
{ 48, 319 },
{ 49, 318 },
{ 50, 317 },
{ 51, 316 },
{ 52, 315 },
{ 53, 314 },
{ 54, 313 },
{ 55, 312 },
{ 56, 311 },
{ 57, 310 },
{ 58, 308 },
{ 59, 306 },
{ 60, 304 },
{ 61, 302 },
{ 62, 300 },
{ 63, 298 },
{ 15, 0 },
{ 16, 400 },
{ 17, 398 },
{ 18, 396 },
{ 19, 394 },
{ 20, 392 },
{ 21, 390 },
{ 22, 388 },
{ 23, 386 },
{ 24, 384 },
{ 25, 382 },
{ 26, 380 },
{ 27, 379 },
{ 28, 378 },
{ 29, 377 },
{ 30, 376 },
{ 31, 375 },
{ 32, 374 },
{ 33, 373 },
{ 34, 372 },
{ 35, 371 },
{ 36, 370 },
{ 37, 362 },
{ 38, 354 },
{ 39, 346 },
{ 40, 338 },
{ 41, 330 },
{ 42, 328 },
{ 43, 326 },
{ 44, 324 },
{ 45, 322 },
{ 46, 320 },
{ 47, 319 },
{ 48, 318 },
{ 49, 317 },
{ 50, 316 },
{ 51, 315 },
{ 52, 314 },
{ 53, 313 },
{ 54, 312 },
{ 55, 311 },
{ 56, 310 },
{ 57, 308 },
{ 58, 306 },
{ 59, 304 },
{ 60, 302 },
{ 61, 300 },
{ 62, 298 },
{ 65, 295 },
{ 68, 294 },
{ 70, 293 },