drivers/media/dvb-frontends/cx24120.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Conexant CX24120/CX24118 - DVB-S/S2 demod/tuner driver
   4  *
   5  * Copyright (C) 2008 Patrick Boettcher <pb@linuxtv.org>
   6  * Copyright (C) 2009 Sergey Tyurin <forum.free-x.de>
   7  * Updated 2012 by Jannis Achstetter <jannis_achstetter@web.de>
   8  * Copyright (C) 2015 Jemma Denson <jdenson@gmail.com>
   9  */
  10
  11 #ifndef CX24120_H
  12 #define CX24120_H
  13
  14 #include <linux/dvb/frontend.h>
  15 #include <linux/firmware.h>
  16
  17 struct cx24120_initial_mpeg_config {
  18         u8 x1;
  19         u8 x2;
  20         u8 x3;
  21 };
  22
  23 struct cx24120_config {
  24         u8 i2c_addr;
  25         u32 xtal_khz;
  26         struct cx24120_initial_mpeg_config initial_mpeg_config;
  27
  28         int (*request_firmware)(struct dvb_frontend *fe,
  29                                 const struct firmware **fw, char *name);
  30
  31         /* max bytes I2C provider can write at once */
  32         u16 i2c_wr_max;
  33 };
  34
  35 #if IS_REACHABLE(CONFIG_DVB_CX24120)
  36 struct dvb_frontend *cx24120_attach(const struct cx24120_config *config,
  37                                     struct i2c_adapter *i2c);
  38 #else
  39 static inline
  40 struct dvb_frontend *cx24120_attach(const struct cx24120_config *config,
  41                                     struct i2c_adapter *i2c)
  42 {
  43         pr_warn("%s: driver disabled by Kconfig\n", __func__);
  44         return NULL;
  45 }
  46 #endif
  47
  48 #endif /* CX24120_H */