1 /* 2 * ZyDAS ZD1301 driver (demodulator) 3 * 4 * Copyright (C) 2015 Antti Palosaari <crope@iki.fi> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #ifndef ZD1301_DEMOD_H 18 #define ZD1301_DEMOD_H 19 20 #include <linux/platform_device.h> 21 #include <linux/dvb/frontend.h> 22 #include "dvb_frontend.h" 23 24 /** 25 * struct zd1301_demod_platform_data - Platform data for the zd1301_demod driver 26 * @reg_priv: First argument of reg_read and reg_write callbacks. 27 * @reg_read: Register read callback. 28 * @reg_write: Register write callback. 29 */ 30 31 struct zd1301_demod_platform_data { 32 void *reg_priv; 33 int (*reg_read)(void *, u16, u8 *); 34 int (*reg_write)(void *, u16, u8); 35 }; 36 37 #if IS_REACHABLE(CONFIG_DVB_ZD1301_DEMOD) 38 /** 39 * zd1301_demod_get_dvb_frontend() - Get pointer to DVB frontend 40 * @pdev: Pointer to platform device 41 * 42 * Return: Pointer to DVB frontend which given platform device owns. 43 */ 44 45 struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *); 46 47 /** 48 * zd1301_demod_get_i2c_adapter() - Get pointer to I2C adapter 49 * @pdev: Pointer to platform device 50 * 51 * Return: Pointer to I2C adapter which given platform device owns. 52 */ 53 54 struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *); 55 56 #else 57 58 static inline struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *dev) 59 { 60 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 61 62 return NULL; 63 } 64 static inline struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *dev) 65 { 66 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 67 68 return NULL; 69 } 70 71 #endif 72 73 #endif /* ZD1301_DEMOD_H */ 74