1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * ZyDAS ZD1301 driver (demodulator) 4 * 5 * Copyright (C) 2015 Antti Palosaari <crope@iki.fi> 6 */ 7 8 #ifndef ZD1301_DEMOD_H 9 #define ZD1301_DEMOD_H 10 11 #include <linux/platform_device.h> 12 #include <linux/dvb/frontend.h> 13 #include <media/dvb_frontend.h> 14 15 /** 16 * struct zd1301_demod_platform_data - Platform data for the zd1301_demod driver 17 * @reg_priv: First argument of reg_read and reg_write callbacks. 18 * @reg_read: Register read callback. 19 * @reg_write: Register write callback. 20 */ 21 struct zd1301_demod_platform_data { 22 void *reg_priv; 23 int (*reg_read)(void *, u16, u8 *); 24 int (*reg_write)(void *, u16, u8); 25 }; 26 27 #if IS_REACHABLE(CONFIG_DVB_ZD1301_DEMOD) 28 /** 29 * zd1301_demod_get_dvb_frontend() - Get pointer to DVB frontend 30 * @pdev: Pointer to platform device 31 * 32 * Return: Pointer to DVB frontend which given platform device owns. 33 */ 34 struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *pdev); 35 36 /** 37 * zd1301_demod_get_i2c_adapter() - Get pointer to I2C adapter 38 * @pdev: Pointer to platform device 39 * 40 * Return: Pointer to I2C adapter which given platform device owns. 41 */ 42 struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *pdev); 43 44 #else 45 46 static inline struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *dev) 47 { 48 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 49 50 return NULL; 51 } 52 static inline struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *dev) 53 { 54 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 55 56 return NULL; 57 } 58 59 #endif 60 61 #endif /* ZD1301_DEMOD_H */ 62