xref: /linux/drivers/media/dvb-frontends/lgdt330x.h (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *    Support for LGDT3302 and LGDT3303 - VSB/QAM
4  *
5  *    Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net>
6  */
7 
8 #ifndef LGDT330X_H
9 #define LGDT330X_H
10 
11 #include <linux/dvb/frontend.h>
12 
13 typedef enum lg_chip_t {
14 		UNDEFINED,
15 		LGDT3302,
16 		LGDT3303
17 }lg_chip_type;
18 
19 /**
20  * struct lgdt330x_config - contains lgdt330x configuration
21  *
22  * @demod_chip:		LG demodulator chip LGDT3302 or LGDT3303
23  * @serial_mpeg:	MPEG hardware interface - 0:parallel 1:serial
24  * @pll_rf_set:		Callback function to set PLL interface
25  * @set_ts_params:	Callback function to set device param for start_dma
26  * @clock_polarity_flip:
27  *	Flip the polarity of the mpeg data transfer clock using alternate
28  *	init data.
29  *	This option applies ONLY to LGDT3303 - 0:disabled (default) 1:enabled
30  * @get_dvb_frontend:
31  *	returns the frontend associated with this I2C client.
32  *	Filled by the driver.
33  */
34 struct lgdt330x_config
35 {
36 	lg_chip_type demod_chip;
37 	int serial_mpeg;
38 	int (*pll_rf_set) (struct dvb_frontend* fe, int index);
39 	int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);
40 	int clock_polarity_flip;
41 
42 	struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
43 };
44 
45 #if IS_REACHABLE(CONFIG_DVB_LGDT330X)
46 struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,
47 				     u8 demod_address,
48 				     struct i2c_adapter *i2c);
49 #else
50 static inline
lgdt330x_attach(const struct lgdt330x_config * config,u8 demod_address,struct i2c_adapter * i2c)51 struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,
52 				     u8 demod_address,
53 				     struct i2c_adapter *i2c)
54 {
55 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
56 	return NULL;
57 }
58 #endif // CONFIG_DVB_LGDT330X
59 
60 #endif /* LGDT330X_H */
61