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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Support for Legend Silicon GB20600 (a.k.a DMB-TH) demodulator
* LGS8913, LGS8GL5, LGS8G75
* experimental support LGS8G42, LGS8G52
*
* Copyright (C) 2007-2009 David T.L. Wong <davidtlwong@gmail.com>
* Copyright (C) 2008 Sirius International (Hong Kong) Limited
* Timothy Lee <timothy.lee@siriushk.com> (for initial work on LGS8GL5)
*/
#ifndef __LGS8GXX_H__
#define __LGS8GXX_H__
#include <linux/dvb/frontend.h>
#include <linux/i2c.h>
#define LGS8GXX_PROD_LGS8913 0
#define LGS8GXX_PROD_LGS8GL5 1
#define LGS8GXX_PROD_LGS8G42 3
#define LGS8GXX_PROD_LGS8G52 4
#define LGS8GXX_PROD_LGS8G54 5
#define LGS8GXX_PROD_LGS8G75 6
struct lgs8gxx_config {
/* product type */
u8 prod;
/* the demodulator's i2c address */
u8 demod_address;
/* parallel or serial transport stream */
u8 serial_ts;
/* transport stream polarity*/
u8 ts_clk_pol;
/* transport stream clock gated by ts_valid */
u8 ts_clk_gated;
/* A/D Clock frequency */
u32 if_clk_freq; /* in kHz */
/* IF frequency */
u32 if_freq; /* in kHz */
/*Use External ADC*/
u8 ext_adc;
/*External ADC output two's complement*/
u8 adc_signed;
/*Sample IF data at falling edge of IF_CLK*/
u8 if_neg_edge;
/*IF use Negative center frequency*/
u8 if_neg_center;
/*8G75 internal ADC input range selection*/
/*0: 0.8Vpp, 1: 1.0Vpp, 2: 1.6Vpp, 3: 2.0Vpp*/
u8 adc_vpp;
/* slave address and configuration of the tuner */
u8 tuner_address;
};
#if IS_REACHABLE(CONFIG_DVB_LGS8GXX)
extern struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
struct i2c_adapter *i2c);
#else
static inline
struct dvb_frontend *lgs8gxx_attach(const struct lgs8gxx_config *config,
struct i2c_adapter *i2c) {
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif /* CONFIG_DVB_LGS8GXX */
#endif /* __LGS8GXX_H__ */
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