drivers/media/dvb-frontends/lgdt330x.h

   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
  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 */