diff options
| author | Michael Krufky <mkrufky@linuxtv.org> | 2008-06-08 18:12:37 -0400 |
|---|---|---|
| committer | Michael Krufky <mkrufky@linuxtv.org> | 2008-06-08 18:12:37 -0400 |
| commit | 12e2aee260072adb596daa139922383866261deb (patch) | |
| tree | f5db20e111f9cdbb753212adfd6692745600b422 /linux/drivers/media/common/tuners/tda18271-common.c | |
| parent | ad38525031a5cbc005a9b5de6800287db67af8c8 (diff) | |
| download | mediapointer-dvb-s2-12e2aee260072adb596daa139922383866261deb.tar.gz mediapointer-dvb-s2-12e2aee260072adb596daa139922383866261deb.tar.bz2 | |
tda18271: dont touch EB14 if rf_cal lookup is out of range
From: Michael Krufky <mkrufky@linuxtv.org>
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>
Diffstat (limited to 'linux/drivers/media/common/tuners/tda18271-common.c')
| -rw-r--r-- | linux/drivers/media/common/tuners/tda18271-common.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/linux/drivers/media/common/tuners/tda18271-common.c b/linux/drivers/media/common/tuners/tda18271-common.c index 1eaff90da..a8fb96698 100644 --- a/linux/drivers/media/common/tuners/tda18271-common.c +++ b/linux/drivers/media/common/tuners/tda18271-common.c @@ -717,9 +717,17 @@ 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; } |