1 /*
2 * Support for LGDT3302 and LGDT3303 - VSB/QAM
3 *
4 * Copyright (C) 2005 Wilson Michaels <wilsonmichaels@earthlink.net>
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
18 #ifndef LGDT330X_H
19 #define LGDT330X_H
20
21 #include <linux/dvb/frontend.h>
22
23 typedef enum lg_chip_t {
24 UNDEFINED,
25 LGDT3302,
26 LGDT3303
27 }lg_chip_type;
28
29 /**
30 * struct lgdt330x_config - contains lgdt330x configuration
31 *
32 * @demod_chip: LG demodulator chip LGDT3302 or LGDT3303
33 * @serial_mpeg: MPEG hardware interface - 0:parallel 1:serial
34 * @pll_rf_set: Callback function to set PLL interface
35 * @set_ts_params: Callback function to set device param for start_dma
36 * @clock_polarity_flip:
37 * Flip the polarity of the mpeg data transfer clock using alternate
38 * init data.
39 * This option applies ONLY to LGDT3303 - 0:disabled (default) 1:enabled
40 * @get_dvb_frontend:
41 * returns the frontend associated with this I2C client.
42 * Filled by the driver.
43 */
44 struct lgdt330x_config
45 {
46 lg_chip_type demod_chip;
47 int serial_mpeg;
48 int (*pll_rf_set) (struct dvb_frontend* fe, int index);
49 int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);
50 int clock_polarity_flip;
51
52 struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
53 };
54
55 #if IS_REACHABLE(CONFIG_DVB_LGDT330X)
56 struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,
57 u8 demod_address,
58 struct i2c_adapter *i2c);
59 #else
60 static inline
lgdt330x_attach(const struct lgdt330x_config * config,u8 demod_address,struct i2c_adapter * i2c)61 struct dvb_frontend *lgdt330x_attach(const struct lgdt330x_config *config,
62 u8 demod_address,
63 struct i2c_adapter *i2c)
64 {
65 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
66 return NULL;
67 }
68 #endif // CONFIG_DVB_LGDT330X
69
70 #endif /* LGDT330X_H */
71
