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authorMichael Krufky <mkrufky@linuxtv.org>2008-06-08 21:12:37 -0400
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-06-26 14:58:49 -0400
commit119a7c7e34b5e5fa65051960ca05000a19dbce85 (patch)
tree7990e7b76484c028efa7d531d59bcb4bc0fa2c04 /drivers/media/common/tuners/tda18271-common.c
parent44e645c20304bbe0a72cb994d9baf4b5727d7cec (diff)
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/tuners/tda18271-common.c')
-rw-r--r--drivers/media/common/tuners/tda18271-common.c10
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)
649 u8 val; 649 u8 val;
650 650
651 int ret = tda18271_lookup_map(fe, RF_CAL, freq, &val); 651 int ret = tda18271_lookup_map(fe, RF_CAL, freq, &val);
652 /* The TDA18271HD/C1 rf_cal map lookup is expected to go out of range
653 * for frequencies above 61.1 MHz. In these cases, the internal RF
654 * tracking filters calibration mechanism is used.
655 *
656 * There is no need to warn the user about this.
657 */
658 if (ret < 0)
659 goto fail;
652 660
653 regs[R_EB14] = val; 661 regs[R_EB14] = val;
654 662fail:
655 return ret; 663 return ret;
656} 664}
657 665