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