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/*
* ZyDAS ZD1301 driver (demodulator)
*
* Copyright (C) 2015 Antti Palosaari <crope@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef ZD1301_DEMOD_H
#define ZD1301_DEMOD_H
#include <linux/platform_device.h>
#include <linux/dvb/frontend.h>
#include <media/dvb_frontend.h>
/**
* struct zd1301_demod_platform_data - Platform data for the zd1301_demod driver
* @reg_priv: First argument of reg_read and reg_write callbacks.
* @reg_read: Register read callback.
* @reg_write: Register write callback.
*/
struct zd1301_demod_platform_data {
void *reg_priv;
int (*reg_read)(void *, u16, u8 *);
int (*reg_write)(void *, u16, u8);
};
#if IS_REACHABLE(CONFIG_DVB_ZD1301_DEMOD)
/**
* zd1301_demod_get_dvb_frontend() - Get pointer to DVB frontend
* @pdev: Pointer to platform device
*
* Return: Pointer to DVB frontend which given platform device owns.
*/
struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *pdev);
/**
* zd1301_demod_get_i2c_adapter() - Get pointer to I2C adapter
* @pdev: Pointer to platform device
*
* Return: Pointer to I2C adapter which given platform device owns.
*/
struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *pdev);
#else
/**
* zd1301_demod_get_dvb_frontend() - Attach a zd1301 frontend
* @dev: Pointer to platform device
*
* Return: Pointer to %struct dvb_frontend or NULL if attach fails.
*/
static inline struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *dev)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
static inline struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *dev)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif /* ZD1301_DEMOD_H */
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