61 lines · c
1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Support for LGDT3302 and LGDT3303 - VSB/QAM4 *5 * Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net>6 */7 8#ifndef LGDT330X_H9#define LGDT330X_H10 11#include <linux/dvb/frontend.h>12 13typedef enum lg_chip_t {14 UNDEFINED,15 LGDT3302,16 LGDT330317}lg_chip_type;18 19/**20 * struct lgdt330x_config - contains lgdt330x configuration21 *22 * @demod_chip: LG demodulator chip LGDT3302 or LGDT330323 * @serial_mpeg: MPEG hardware interface - 0:parallel 1:serial24 * @pll_rf_set: Callback function to set PLL interface25 * @set_ts_params: Callback function to set device param for start_dma26 * @clock_polarity_flip:27 * Flip the polarity of the mpeg data transfer clock using alternate28 * init data.29 * This option applies ONLY to LGDT3303 - 0:disabled (default) 1:enabled30 * @get_dvb_frontend:31 * returns the frontend associated with this I2C client.32 * Filled by the driver.33 */34struct lgdt330x_config35{36 lg_chip_type demod_chip;37 int serial_mpeg;38 int (*pll_rf_set) (struct dvb_frontend* fe, int index);39 int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);40 int clock_polarity_flip;41 42 struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);43};44 45#if IS_REACHABLE(CONFIG_DVB_LGDT330X)46struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,47 u8 demod_address,48 struct i2c_adapter *i2c);49#else50static inline51struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,52 u8 demod_address,53 struct i2c_adapter *i2c)54{55 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);56 return NULL;57}58#endif // CONFIG_DVB_LGDT330X59 60#endif /* LGDT330X_H */61