1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * ascot2e.h 4 * 5 * Sony Ascot3E DVB-T/T2/C/C2 tuner driver 6 * 7 * Copyright 2012 Sony Corporation 8 * Copyright (C) 2014 NetUP Inc. 9 * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru> 10 * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru> 11 */ 12 13 #ifndef __DVB_ASCOT2E_H__ 14 #define __DVB_ASCOT2E_H__ 15 16 #include <linux/dvb/frontend.h> 17 #include <linux/i2c.h> 18 19 /** 20 * struct ascot2e_config - the configuration of Ascot2E tuner driver 21 * @i2c_address: I2C address of the tuner 22 * @xtal_freq_mhz: Oscillator frequency, MHz 23 * @set_tuner_priv: Callback function private context 24 * @set_tuner_callback: Callback function that notifies the parent driver 25 * which tuner is active now 26 */ 27 struct ascot2e_config { 28 u8 i2c_address; 29 u8 xtal_freq_mhz; 30 void *set_tuner_priv; 31 int (*set_tuner_callback)(void *, int); 32 }; 33 34 #if IS_REACHABLE(CONFIG_DVB_ASCOT2E) 35 /** 36 * ascot2e_attach - Attach an ascot2e tuner 37 * 38 * @fe: frontend to be attached 39 * @config: pointer to &struct ascot2e_config with tuner configuration. 40 * @i2c: i2c adapter to use. 41 * 42 * return: FE pointer on success, NULL on failure. 43 */ 44 extern struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe, 45 const struct ascot2e_config *config, 46 struct i2c_adapter *i2c); 47 #else 48 static inline struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe, 49 const struct ascot2e_config *config, 50 struct i2c_adapter *i2c) 51 { 52 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 53 return NULL; 54 } 55 #endif 56 57 #endif 58