86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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/*
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* Support for LGDT3305 - VSB/QAM
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*
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* Copyright (C) 2008, 2009 Michael Krufky <mkrufky@linuxtv.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef _LGDT3305_H_
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#define _LGDT3305_H_
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#include <linux/i2c.h>
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#include "dvb_frontend.h"
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enum lgdt3305_mpeg_mode {
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LGDT3305_MPEG_PARALLEL = 0,
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LGDT3305_MPEG_SERIAL = 1,
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};
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enum lgdt3305_tp_clock_edge {
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LGDT3305_TPCLK_RISING_EDGE = 0,
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LGDT3305_TPCLK_FALLING_EDGE = 1,
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};
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enum lgdt3305_tp_valid_polarity {
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LGDT3305_TP_VALID_LOW = 0,
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LGDT3305_TP_VALID_HIGH = 1,
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};
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struct lgdt3305_config {
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u8 i2c_addr;
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/* user defined IF frequency in KHz */
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u16 qam_if_khz;
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u16 vsb_if_khz;
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/* AGC Power reference - defaults are used if left unset */
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u16 usref_8vsb; /* default: 0x32c4 */
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u16 usref_qam64; /* default: 0x5400 */
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u16 usref_qam256; /* default: 0x2a80 */
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/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
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int deny_i2c_rptr:1;
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/* spectral inversion - 0:disabled 1:enabled */
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int spectral_inversion:1;
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/* use RF AGC loop - 0:disabled 1:enabled */
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int rf_agc_loop:1;
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enum lgdt3305_mpeg_mode mpeg_mode;
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enum lgdt3305_tp_clock_edge tpclk_edge;
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enum lgdt3305_tp_valid_polarity tpvalid_polarity;
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};
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#if defined(CONFIG_DVB_LGDT3305) || (defined(CONFIG_DVB_LGDT3305_MODULE) && \
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defined(MODULE))
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extern
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struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
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struct i2c_adapter *i2c_adap);
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#else
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static inline
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struct dvb_frontend *lgdt3305_attach(const struct lgdt3305_config *config,
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struct i2c_adapter *i2c_adap)
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{
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printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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#endif /* CONFIG_DVB_LGDT3305 */
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#endif /* _LGDT3305_H_ */
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