drivers/media/dvb-frontends/zd1301_demod.h

   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 */