61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Support for LGDT3302 and LGDT3303 - VSB/QAM
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*
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* Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net>
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*/
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#ifndef LGDT330X_H
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#define LGDT330X_H
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#include <linux/dvb/frontend.h>
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typedef enum lg_chip_t {
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UNDEFINED,
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LGDT3302,
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LGDT3303
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}lg_chip_type;
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/**
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* struct lgdt330x_config - contains lgdt330x configuration
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*
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* @demod_chip: LG demodulator chip LGDT3302 or LGDT3303
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* @serial_mpeg: MPEG hardware interface - 0:parallel 1:serial
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* @pll_rf_set: Callback function to set PLL interface
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* @set_ts_params: Callback function to set device param for start_dma
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* @clock_polarity_flip:
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* Flip the polarity of the mpeg data transfer clock using alternate
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* init data.
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* This option applies ONLY to LGDT3303 - 0:disabled (default) 1:enabled
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* @get_dvb_frontend:
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* returns the frontend associated with this I2C client.
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* Filled by the driver.
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*/
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struct lgdt330x_config
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{
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lg_chip_type demod_chip;
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int serial_mpeg;
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int (*pll_rf_set) (struct dvb_frontend* fe, int index);
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int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);
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int clock_polarity_flip;
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struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
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};
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#if IS_REACHABLE(CONFIG_DVB_LGDT330X)
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struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,
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u8 demod_address,
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struct i2c_adapter *i2c);
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#else
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static inline
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struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,
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u8 demod_address,
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struct i2c_adapter *i2c)
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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_LGDT330X
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#endif /* LGDT330X_H */
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