diff options
| author | Matthias Schwarzott <zzam@gentoo.org> | 2014-07-22 17:12:12 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-27 17:01:41 -0300 |
| commit | 3e54a1697ace99d1ad602ec268abf117ace1412f (patch) | |
| tree | 86afb2e3aa37a0cded48484eedf6c83fe3454beb /drivers/media/dvb-frontends/si2165.h | |
| parent | 9ca72fa1f854a596092901f3e0ee90bb3d459ed5 (diff) | |
[media] si2165: Add demod driver for DVB-T only
DVB-T was tested with 8MHz BW channels in germany
This driver is the simplest possible, it uses automatic mode for all
parameters (TPS).
Added spectrum inversion support.
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Tested-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/si2165.h')
| -rw-r--r-- | drivers/media/dvb-frontends/si2165.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/si2165.h b/drivers/media/dvb-frontends/si2165.h new file mode 100644 index 000000000000..7a6b59ded4e2 --- /dev/null +++ b/drivers/media/dvb-frontends/si2165.h @@ -0,0 +1,64 @@ +/* + Driver for Silicon Labs SI2165 DVB-C/-T Demodulator + + Copyright (C) 2013-2014 Matthias Schwarzott <zzam@gentoo.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. + + References: + http://www.silabs.com/Support%20Documents/TechnicalDocs/Si2165-short.pdf +*/ + +#ifndef _DVB_SI2165_H +#define _DVB_SI2165_H + +#include <linux/dvb/frontend.h> + +#if IS_ENABLED(CONFIG_DVB_SI2165) + +enum { + SI2165_MODE_OFF = 0x00, + SI2165_MODE_PLL_EXT = 0x20, + SI2165_MODE_PLL_XTAL = 0x21 +}; + +struct si2165_config { + /* i2c addr + * possible values: 0x64,0x65,0x66,0x67 */ + u8 i2c_addr; + + /* external clock or XTAL */ + u8 chip_mode; + + /* frequency of external clock or xtal in Hz + * possible values: 4000000, 16000000, 20000000, 240000000, 27000000 + */ + u32 ref_freq_Hz; + + /* invert the spectrum */ + bool inversion; +}; + +/* Addresses: 0x64,0x65,0x66,0x67 */ +struct dvb_frontend *si2165_attach( + const struct si2165_config *config, + struct i2c_adapter *i2c); +#else +static inline struct dvb_frontend *si2165_attach( + const struct si2165_config *config, + struct i2c_adapter *i2c) +{ + pr_warn("%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif /* CONFIG_DVB_SI2165 */ + +#endif /* _DVB_SI2165_H */ |