diff options
Diffstat (limited to 'drivers/media/dvb-frontends/mt352.h')
| -rw-r--r-- | drivers/media/dvb-frontends/mt352.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/mt352.h b/drivers/media/dvb-frontends/mt352.h new file mode 100644 index 000000000..acb1c3374 --- /dev/null +++ b/drivers/media/dvb-frontends/mt352.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Driver for Zarlink DVB-T MT352 demodulator + * + * Written by Holger Waechtler <holger@qanu.de> + * and Daniel Mack <daniel@qanu.de> + * + * AVerMedia AVerTV DVB-T 771 support by + * Wolfram Joost <dbox2@frokaschwei.de> + * + * Support for Samsung TDTC9251DH01C(M) tuner + * Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it> + * Amauri Celani <acelani@essegi.net> + * + * DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by + * Christopher Pascoe <c.pascoe@itee.uq.edu.au> + */ + +#ifndef MT352_H +#define MT352_H + +#include <linux/dvb/frontend.h> + +struct mt352_config +{ + /* the demodulator's i2c address */ + u8 demod_address; + + /* frequencies in kHz */ + int adc_clock; // default: 20480 + int if2; // default: 36166 + + /* set if no pll is connected to the secondary i2c bus */ + int no_tuner; + + /* Initialise the demodulator and PLL. Cannot be NULL */ + int (*demod_init)(struct dvb_frontend* fe); +}; + +#if IS_REACHABLE(CONFIG_DVB_MT352) +extern struct dvb_frontend* mt352_attach(const struct mt352_config* config, + struct i2c_adapter* i2c); +#else +static inline struct dvb_frontend* mt352_attach(const struct mt352_config* config, + struct i2c_adapter* i2c) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif // CONFIG_DVB_MT352 + +static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) { + int r = 0; + if (fe->ops.write) + r = fe->ops.write(fe, buf, len); + return r; +} + +#endif // MT352_H |