| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Driver for Xceive XC4000 "QAM/8VSB single chip tuner" |
| 3 | * |
| 4 | * Copyright (c) 2007 Steven Toth <stoth@linuxtv.org> |
| 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 | * |
| 15 | * GNU General Public License for more details. |
| 16 | */ |
| 17 | |
| 18 | #ifndef __XC4000_H__ |
| 19 | #define __XC4000_H__ |
| 20 | |
| 21 | #include <linux/firmware.h> |
| 22 | |
| 23 | struct dvb_frontend; |
| 24 | struct i2c_adapter; |
| 25 | |
| 26 | struct xc4000_config { |
| 27 | u8 i2c_address; |
| 28 | /* if non-zero, power management is enabled by default */ |
| 29 | u8 default_pm; |
| 30 | /* value to be written to XREG_AMPLITUDE in DVB-T mode (0: no write) */ |
| 31 | u8 dvb_amplitude; |
| 32 | /* if non-zero, register 0x0E is set to filter analog TV video output */ |
| 33 | u8 set_smoothedcvbs; |
| 34 | /* IF for DVB-T */ |
| 35 | u32 if_khz; |
| 36 | }; |
| 37 | |
| 38 | /* xc4000 callback command */ |
| 39 | #define XC4000_TUNER_RESET 0 |
| 40 | |
| 41 | /* For each bridge framework, when it attaches either analog or digital, |
| 42 | * it has to store a reference back to its _core equivalent structure, |
| 43 | * so that it can service the hardware by steering gpio's etc. |
| 44 | * Each bridge implementation is different so cast devptr accordingly. |
| 45 | * The xc4000 driver cares not for this value, other than ensuring |
| 46 | * it's passed back to a bridge during tuner_callback(). |
| 47 | */ |
| 48 | |
| 49 | #if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC4000) |
| 50 | extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, |
| 51 | struct i2c_adapter *i2c, |
| 52 | struct xc4000_config *cfg); |
| 53 | #else |
| 54 | static inline struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, |
| 55 | struct i2c_adapter *i2c, |
| 56 | struct xc4000_config *cfg) |
| 57 | { |
| 58 | printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); |
| 59 | return NULL; |
| 60 | } |
| 61 | #endif |
| 62 | |
| 63 | #endif |