mirror of https://gitee.com/openkylin/linux.git
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
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* Support for LGDT3306A - 8VSB/QAM-B
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*
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* Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
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* based on lgdt3305.[ch] by Michael Krufky
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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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#ifndef _LGDT3306A_H_
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#define _LGDT3306A_H_
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#include <linux/i2c.h>
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#include "dvb_frontend.h"
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enum lgdt3306a_mpeg_mode {
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LGDT3306A_MPEG_PARALLEL = 0,
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LGDT3306A_MPEG_SERIAL = 1,
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};
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enum lgdt3306a_tp_clock_edge {
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LGDT3306A_TPCLK_RISING_EDGE = 0,
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LGDT3306A_TPCLK_FALLING_EDGE = 1,
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};
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enum lgdt3306a_tp_valid_polarity {
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LGDT3306A_TP_VALID_LOW = 0,
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LGDT3306A_TP_VALID_HIGH = 1,
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};
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struct lgdt3306a_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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/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
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unsigned int deny_i2c_rptr:1;
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/* spectral inversion - 0:disabled 1:enabled */
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unsigned int spectral_inversion:1;
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enum lgdt3306a_mpeg_mode mpeg_mode;
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enum lgdt3306a_tp_clock_edge tpclk_edge;
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enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
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/* demod clock freq in MHz; 24 or 25 supported */
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int xtalMHz;
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/* returned by driver if using i2c bus multiplexing */
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struct dvb_frontend **fe;
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struct i2c_adapter **i2c_adapter;
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};
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#if IS_REACHABLE(CONFIG_DVB_LGDT3306A)
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struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_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 *lgdt3306a_attach(const struct lgdt3306a_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_LGDT3306A */
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#endif /* _LGDT3306A_H_ */
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