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[media] si2165: Add demod driver for DVB-T only

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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>
This commit is contained in:
Matthias Schwarzott 2014-07-22 17:12:12 -03:00 committed by Mauro Carvalho Chehab
parent 9ca72fa1f8
commit 3e54a1697a
5 changed files with 1137 additions and 0 deletions
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9
drivers/media/dvb-frontends/Kconfig
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@ -63,6 +63,15 @@ config DVB_TDA18271C2DD
Say Y when you want to support this tuner.
config DVB_SI2165
tristate "Silicon Labs si2165 based"
depends on DVB_CORE && I2C
default m if !MEDIA_SUBDRV_AUTOSELECT
help
A DVB-C/T demodulator.
Say Y when you want to support this frontend.
comment "DVB-S (satellite) frontends"
depends on DVB_CORE

1
drivers/media/dvb-frontends/Makefile
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@ -105,6 +105,7 @@ obj-$(CONFIG_DVB_STV0367) += stv0367.o
obj-$(CONFIG_DVB_CXD2820R) += cxd2820r.o
obj-$(CONFIG_DVB_DRXK) += drxk.o
obj-$(CONFIG_DVB_TDA18271C2DD) += tda18271c2dd.o
obj-$(CONFIG_DVB_SI2165) += si2165.o
obj-$(CONFIG_DVB_A8293) += a8293.o
obj-$(CONFIG_DVB_TDA10071) += tda10071.o
obj-$(CONFIG_DVB_RTL2830) += rtl2830.o

1040
drivers/media/dvb-frontends/si2165.c Normal file
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64
drivers/media/dvb-frontends/si2165.h Normal file
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@ -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 */

23
drivers/media/dvb-frontends/si2165_priv.h Normal file
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@ -0,0 +1,23 @@
/*
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.
*/
#ifndef _DVB_SI2165_PRIV
#define _DVB_SI2165_PRIV
#define SI2165_FIRMWARE "dvb-demod-si2165.fw"
#endif /* _DVB_SI2165_PRIV */