diff options
| author | Michael Krufky <mkrufky@linuxtv.org> | 2008-06-09 05:12:37 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-06-26 22:58:49 +0400 |
| commit | 119a7c7e34b5e5fa65051960ca05000a19dbce85 (patch) | |
| tree | 7990e7b76484c028efa7d531d59bcb4bc0fa2c04 /drivers/media/common | |
| parent | 44e645c20304bbe0a72cb994d9baf4b5727d7cec (diff) | |
| download | linux-119a7c7e34b5e5fa65051960ca05000a19dbce85.tar.xz | |
V4L/DVB (8035): tda18271: dont touch EB14 if rf_cal lookup is out of range
The TDA18271HD/C1 rf_cal map lookup is expected to go out of range outside
of the frequency window 41 MHz - 61.1 MHz. In these cases, the internal
RF tracking filters calibration mechanism is used.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/common')
| -rw-r--r-- | drivers/media/common/tuners/tda18271-common.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/media/common/tuners/tda18271-common.c b/drivers/media/common/tuners/tda18271-common.c index f1894fec32b9..6fb5b4586569 100644 --- a/drivers/media/common/tuners/tda18271-common.c +++ b/drivers/media/common/tuners/tda18271-common.c @@ -649,9 +649,17 @@ int tda18271_calc_rf_cal(struct dvb_frontend *fe, u32 *freq) u8 val; int ret = tda18271_lookup_map(fe, RF_CAL, freq, &val); + /* The TDA18271HD/C1 rf_cal map lookup is expected to go out of range + * for frequencies above 61.1 MHz. In these cases, the internal RF + * tracking filters calibration mechanism is used. + * + * There is no need to warn the user about this. + */ + if (ret < 0) + goto fail; regs[R_EB14] = val; - +fail: return ret; } |