62 lines · c
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_H9#define ZD1301_DEMOD_H10 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 driver17 * @reg_priv: First argument of reg_read and reg_write callbacks.18 * @reg_read: Register read callback.19 * @reg_write: Register write callback.20 */21struct 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 frontend30 * @pdev: Pointer to platform device31 *32 * Return: Pointer to DVB frontend which given platform device owns.33 */34struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *pdev);35 36/**37 * zd1301_demod_get_i2c_adapter() - Get pointer to I2C adapter38 * @pdev: Pointer to platform device39 *40 * Return: Pointer to I2C adapter which given platform device owns.41 */42struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *pdev);43 44#else45 46static 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}52static 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#endif60 61#endif /* ZD1301_DEMOD_H */62