diff options
Diffstat (limited to 'kernel/drivers/media/tuners/xc4000.h')
| -rw-r--r-- | kernel/drivers/media/tuners/xc4000.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/kernel/drivers/media/tuners/xc4000.h b/kernel/drivers/media/tuners/xc4000.h new file mode 100644 index 000000000..40517860c --- /dev/null +++ b/kernel/drivers/media/tuners/xc4000.h @@ -0,0 +1,67 @@ +/* + * Driver for Xceive XC4000 "QAM/8VSB single chip tuner" + * + * Copyright (c) 2007 Steven Toth <stoth@linuxtv.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __XC4000_H__ +#define __XC4000_H__ + +#include <linux/firmware.h> + +struct dvb_frontend; +struct i2c_adapter; + +struct xc4000_config { + u8 i2c_address; + /* if non-zero, power management is enabled by default */ + u8 default_pm; + /* value to be written to XREG_AMPLITUDE in DVB-T mode (0: no write) */ + u8 dvb_amplitude; + /* if non-zero, register 0x0E is set to filter analog TV video output */ + u8 set_smoothedcvbs; + /* IF for DVB-T */ + u32 if_khz; +}; + +/* xc4000 callback command */ +#define XC4000_TUNER_RESET 0 + +/* For each bridge framework, when it attaches either analog or digital, + * it has to store a reference back to its _core equivalent structure, + * so that it can service the hardware by steering gpio's etc. + * Each bridge implementation is different so cast devptr accordingly. + * The xc4000 driver cares not for this value, other than ensuring + * it's passed back to a bridge during tuner_callback(). + */ + +#if IS_REACHABLE(CONFIG_MEDIA_TUNER_XC4000) +extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, + struct xc4000_config *cfg); +#else +static inline struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe, + struct i2c_adapter *i2c, + struct xc4000_config *cfg) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif + +#endif |