1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *    Support for AltoBeam GB20600 (a.k.a DMB-TH) demodulator
4  *    ATBM8830, ATBM8831
5  *
6  *    Copyright (C) 2009 David T.L. Wong <davidtlwong@gmail.com>
7  */
8 
9 #ifndef __ATBM8830_H__
10 #define __ATBM8830_H__
11 
12 #include <linux/dvb/frontend.h>
13 #include <linux/i2c.h>
14 
15 #define ATBM8830_PROD_8830 0
16 #define ATBM8830_PROD_8831 1
17 
18 struct atbm8830_config {
19 
20 	/* product type */
21 	u8 prod;
22 
23 	/* the demodulator's i2c address */
24 	u8 demod_address;
25 
26 	/* parallel or serial transport stream */
27 	u8 serial_ts;
28 
29 	/* transport stream clock output only when receiving valid stream */
30 	u8 ts_clk_gated;
31 
32 	/* Decoder sample TS data at rising edge of clock */
33 	u8 ts_sampling_edge;
34 
35 	/* Oscillator clock frequency */
36 	u32 osc_clk_freq; /* in kHz */
37 
38 	/* IF frequency */
39 	u32 if_freq; /* in kHz */
40 
41 	/* Swap I/Q for zero IF */
42 	u8 zif_swap_iq;
43 
44 	/* Tuner AGC settings */
45 	u8 agc_min;
46 	u8 agc_max;
47 	u8 agc_hold_loop;
48 };
49 
50 #if IS_REACHABLE(CONFIG_DVB_ATBM8830)
51 extern struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
52 		struct i2c_adapter *i2c);
53 #else
54 static inline
atbm8830_attach(const struct atbm8830_config * config,struct i2c_adapter * i2c)55 struct dvb_frontend *atbm8830_attach(const struct atbm8830_config *config,
56 		struct i2c_adapter *i2c) {
57 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
58 	return NULL;
59 }
60 #endif /* CONFIG_DVB_ATBM8830 */
61 
62 #endif /* __ATBM8830_H__ */
63