1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Support for LGDT3302 and LGDT3303 - VSB/QAM 4 * 5 * Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net> 6 */ 7 8 #ifndef LGDT330X_H 9 #define LGDT330X_H 10 11 #include <linux/dvb/frontend.h> 12 13 typedef enum lg_chip_t { 14 UNDEFINED, 15 LGDT3302, 16 LGDT3303 17 }lg_chip_type; 18 19 /** 20 * struct lgdt330x_config - contains lgdt330x configuration 21 * 22 * @demod_chip: LG demodulator chip LGDT3302 or LGDT3303 23 * @serial_mpeg: MPEG hardware interface - 0:parallel 1:serial 24 * @pll_rf_set: Callback function to set PLL interface 25 * @set_ts_params: Callback function to set device param for start_dma 26 * @clock_polarity_flip: 27 * Flip the polarity of the mpeg data transfer clock using alternate 28 * init data. 29 * This option applies ONLY to LGDT3303 - 0:disabled (default) 1:enabled 30 * @get_dvb_frontend: 31 * returns the frontend associated with this I2C client. 32 * Filled by the driver. 33 */ 34 struct lgdt330x_config 35 { 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) 46 struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config, 47 u8 demod_address, 48 struct i2c_adapter *i2c); 49 #else 50 static inline 51 struct 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_LGDT330X 59 60 #endif /* LGDT330X_H */ 61