diff options
Diffstat (limited to 'drivers/media/dvb-frontends/tda10021.c')
| -rw-r--r-- | drivers/media/dvb-frontends/tda10021.c | 56 |
1 files changed, 27 insertions, 29 deletions
diff --git a/drivers/media/dvb-frontends/tda10021.c b/drivers/media/dvb-frontends/tda10021.c index 5cd885d4ea04..462e12ab6bd1 100644 --- a/drivers/media/dvb-frontends/tda10021.c +++ b/drivers/media/dvb-frontends/tda10021.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* TDA10021 - Single Chip Cable Channel Receiver driver module used on the Siemens DVB-C cards @@ -6,19 +7,6 @@ Copyright (C) 2004 Markus Schulz <msc@antzsystem.de> Support for TDA10021 - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/delay.h> @@ -149,26 +137,36 @@ static int tda10021_set_symbolrate (struct tda10021_state* state, u32 symbolrate { s32 BDR; s32 BDRI; - s16 SFIL=0; + s16 SFIL = 0; u16 NDEC = 0; u32 tmp, ratio; - if (symbolrate > XIN/2) - symbolrate = XIN/2; - if (symbolrate < 500000) + if (symbolrate > XIN / 2) + symbolrate = XIN / 2; + else if (symbolrate < 500000) symbolrate = 500000; - if (symbolrate < XIN/16) NDEC = 1; - if (symbolrate < XIN/32) NDEC = 2; - if (symbolrate < XIN/64) NDEC = 3; - - if (symbolrate < (u32)(XIN/12.3)) SFIL = 1; - if (symbolrate < (u32)(XIN/16)) SFIL = 0; - if (symbolrate < (u32)(XIN/24.6)) SFIL = 1; - if (symbolrate < (u32)(XIN/32)) SFIL = 0; - if (symbolrate < (u32)(XIN/49.2)) SFIL = 1; - if (symbolrate < (u32)(XIN/64)) SFIL = 0; - if (symbolrate < (u32)(XIN/98.4)) SFIL = 1; + if (symbolrate < XIN / 16) + NDEC = 1; + if (symbolrate < XIN / 32) + NDEC = 2; + if (symbolrate < XIN / 64) + NDEC = 3; + + if (symbolrate < XIN * 10 / 123) + SFIL = 1; + if (symbolrate < XIN * 10 / 160) + SFIL = 0; + if (symbolrate < XIN * 10 / 246) + SFIL = 1; + if (symbolrate < XIN * 10 / 320) + SFIL = 0; + if (symbolrate < XIN * 10 / 492) + SFIL = 1; + if (symbolrate < XIN * 10 / 640) + SFIL = 0; + if (symbolrate < XIN * 10 / 984) + SFIL = 1; symbolrate <<= NDEC; ratio = (symbolrate << 4) / FIN; @@ -525,4 +523,4 @@ MODULE_DESCRIPTION("Philips TDA10021 DVB-C demodulator driver"); MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Markus Schulz"); MODULE_LICENSE("GPL"); -EXPORT_SYMBOL(tda10021_attach); +EXPORT_SYMBOL_GPL(tda10021_attach); |