| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Driver for Zarlink DVB-T MT352 demodulator |
| 3 | * |
| 4 | * Written by Holger Waechtler <holger@qanu.de> |
| 5 | * and Daniel Mack <daniel@qanu.de> |
| 6 | * |
| 7 | * AVerMedia AVerTV DVB-T 771 support by |
| 8 | * Wolfram Joost <dbox2@frokaschwei.de> |
| 9 | * |
| 10 | * Support for Samsung TDTC9251DH01C(M) tuner |
| 11 | * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it> |
| 12 | * Amauri Celani <acelani@essegi.net> |
| 13 | * |
| 14 | * DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by |
| 15 | * Christopher Pascoe <c.pascoe@itee.uq.edu.au> |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or modify |
| 18 | * it under the terms of the GNU General Public License as published by |
| 19 | * the Free Software Foundation; either version 2 of the License, or |
| 20 | * (at your option) any later version. |
| 21 | * |
| 22 | * This program is distributed in the hope that it will be useful, |
| 23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 25 | * |
| 26 | * GNU General Public License for more details. |
| 27 | */ |
| 28 | |
| 29 | #ifndef MT352_H |
| 30 | #define MT352_H |
| 31 | |
| 32 | #include <linux/dvb/frontend.h> |
| 33 | |
| 34 | struct mt352_config |
| 35 | { |
| 36 | /* the demodulator's i2c address */ |
| 37 | u8 demod_address; |
| 38 | |
| 39 | /* frequencies in kHz */ |
| 40 | int adc_clock; // default: 20480 |
| 41 | int if2; // default: 36166 |
| 42 | |
| 43 | /* set if no pll is connected to the secondary i2c bus */ |
| 44 | int no_tuner; |
| 45 | |
| 46 | /* Initialise the demodulator and PLL. Cannot be NULL */ |
| 47 | int (*demod_init)(struct dvb_frontend* fe); |
| 48 | }; |
| 49 | |
| 50 | #if IS_REACHABLE(CONFIG_DVB_MT352) |
| 51 | extern struct dvb_frontend* mt352_attach(const struct mt352_config* config, |
| 52 | struct i2c_adapter* i2c); |
| 53 | #else |
| 54 | static inline struct dvb_frontend* mt352_attach(const struct mt352_config* config, |
| 55 | struct i2c_adapter* i2c) |
| 56 | { |
| 57 | printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); |
| 58 | return NULL; |
| 59 | } |
| 60 | #endif // CONFIG_DVB_MT352 |
| 61 | |
| 62 | static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) { |
| 63 | int r = 0; |
| 64 | if (fe->ops.write) |
| 65 | r = fe->ops.write(fe, buf, len); |
| 66 | return r; |
| 67 | } |
| 68 | |
| 69 | #endif // MT352_H |