diff options
Diffstat (limited to 'drivers/media/dvb-frontends/isl6421.h')
| -rw-r--r-- | drivers/media/dvb-frontends/isl6421.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/isl6421.h b/drivers/media/dvb-frontends/isl6421.h new file mode 100644 index 000000000..e59487784 --- /dev/null +++ b/drivers/media/dvb-frontends/isl6421.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * isl6421.h - driver for lnb supply and control ic ISL6421 + * + * Copyright (C) 2006 Andrew de Quincey + * Copyright (C) 2006 Oliver Endriss + * + * the project's page is at https://linuxtv.org + */ + +#ifndef _ISL6421_H +#define _ISL6421_H + +#include <linux/dvb/frontend.h> + +/* system register bits */ +#define ISL6421_OLF1 0x01 +#define ISL6421_EN1 0x02 +#define ISL6421_VSEL1 0x04 +#define ISL6421_LLC1 0x08 +#define ISL6421_ENT1 0x10 +#define ISL6421_ISEL1 0x20 +#define ISL6421_DCL 0x40 + +#if IS_REACHABLE(CONFIG_DVB_ISL6421) +/* override_set and override_clear control which system register bits (above) to always set & clear */ +extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, + u8 override_set, u8 override_clear, bool override_tone); +#else +static inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, + u8 override_set, u8 override_clear, bool override_tone) +{ + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif // CONFIG_DVB_ISL6421 + +#endif |