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Linux kernel mirror (for testing)
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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 */
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 frontend
30 * @pdev: Pointer to platform device
31 *
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 adapter
38 * @pdev: Pointer to platform device
39 *
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#else
45
46/**
47 * zd1301_demod_get_dvb_frontend() - Attach a zd1301 frontend
48 * @dev: Pointer to platform device
49 *
50 * Return: Pointer to %struct dvb_frontend or NULL if attach fails.
51 */
52static inline struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *dev)
53{
54 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
55
56 return NULL;
57}
58static inline struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *dev)
59{
60 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
61
62 return NULL;
63}
64
65#endif
66
67#endif /* ZD1301_DEMOD_H */