tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * Support for AltoBeam GB20600 (a.k.a DMB-TH) demodulator
3 * ATBM8830, ATBM8831
4 *
5 * Copyright (C) 2009 David T.L. Wong <davidtlwong@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18#ifndef __ATBM8830_H__
19#define __ATBM8830_H__
20
21#include <linux/dvb/frontend.h>
22#include <linux/i2c.h>
23
24#define ATBM8830_PROD_8830 0
25#define ATBM8830_PROD_8831 1
26
27struct atbm8830_config {
28
29 /* product type */
30 u8 prod;
31
32 /* the demodulator's i2c address */
33 u8 demod_address;
34
35 /* parallel or serial transport stream */
36 u8 serial_ts;
37
38 /* transport stream clock output only when receiving valid stream */
39 u8 ts_clk_gated;
40
41 /* Decoder sample TS data at rising edge of clock */
42 u8 ts_sampling_edge;
43
44 /* Oscillator clock frequency */
45 u32 osc_clk_freq; /* in kHz */
46
47 /* IF frequency */
48 u32 if_freq; /* in kHz */
49
50 /* Swap I/Q for zero IF */
51 u8 zif_swap_iq;
52
53 /* Tuner AGC settings */
54 u8 agc_min;
55 u8 agc_max;
56 u8 agc_hold_loop;
57};
58
59#if IS_REACHABLE(CONFIG_DVB_ATBM8830)
60extern struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
61 struct i2c_adapter *i2c);
62#else
63static inline
64struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
65 struct i2c_adapter *i2c) {
66 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
67 return NULL;
68}
69#endif /* CONFIG_DVB_ATBM8830 */
70
71#endif /* __ATBM8830_H__ */