drivers/media/tuners/tua9001.h

   1 /*
   2  * Infineon TUA 9001 silicon tuner driver
   3  *
   4  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
   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  *    You should have received a copy of the GNU General Public License along
  17  *    with this program; if not, write to the Free Software Foundation, Inc.,
  18  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #ifndef TUA9001_H
  22 #define TUA9001_H
  23
  24 #include <linux/kconfig.h>
  25 #include "dvb_frontend.h"
  26
  27 /*
  28  * I2C address
  29  * 0x60,
  30  */
  31
  32 /**
  33  * struct tua9001_platform_data - Platform data for the tua9001 driver
  34  * @dvb_frontend: DVB frontend.
  35  */
  36 struct tua9001_platform_data {
  37         struct dvb_frontend *dvb_frontend;
  38 };
  39
  40 struct tua9001_config {
  41         /*
  42          * I2C address
  43          */
  44         u8 i2c_addr;
  45 };
  46
  47 /*
  48  * TUA9001 I/O PINs:
  49  *
  50  * CEN - chip enable
  51  * 0 = chip disabled (chip off)
  52  * 1 = chip enabled (chip on)
  53  *
  54  * RESETN - chip reset
  55  * 0 = reset disabled (chip reset off)
  56  * 1 = reset enabled (chip reset on)
  57  *
  58  * RXEN - RX enable
  59  * 0 = RX disabled (chip idle)
  60  * 1 = RX enabled (chip tuned)
  61  */
  62
  63 #define TUA9001_CMD_CEN     0
  64 #define TUA9001_CMD_RESETN  1
  65 #define TUA9001_CMD_RXEN    2
  66
  67 #if IS_REACHABLE(CONFIG_MEDIA_TUNER_TUA9001)
  68 extern struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
  69                 struct i2c_adapter *i2c, struct tua9001_config *cfg);
  70 #else
  71 static inline struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
  72                 struct i2c_adapter *i2c, struct tua9001_config *cfg)
  73 {
  74         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  75         return NULL;
  76 }
  77 #endif
  78
  79 #endif