92d20d9fd1
Delay possible I2C gate close a little bit in order to see if there is next message coming to tuner in a sequence. Also, export private muxed I2C adapter. That is aimed only for SDR extension module as SDR belongs to same RTL2832 physical I2C bus (it is physically property of RTL2832, whilst it is own kernel module). Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
/*
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* Realtek RTL2832 DVB-T demodulator driver
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*
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* Copyright (C) 2012 Thomas Mair <thomas.mair86@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef RTL2832_H
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#define RTL2832_H
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#include <linux/kconfig.h>
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#include <linux/dvb/frontend.h>
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struct rtl2832_config {
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/*
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* Demodulator I2C address.
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*/
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u8 i2c_addr;
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/*
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* Xtal frequency.
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* Hz
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* 4000000, 16000000, 25000000, 28800000
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*/
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u32 xtal;
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/*
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* tuner
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* XXX: This must be keep sync with dvb_usb_rtl28xxu demod driver.
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*/
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#define RTL2832_TUNER_TUA9001 0x24
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#define RTL2832_TUNER_FC0012 0x26
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#define RTL2832_TUNER_E4000 0x27
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#define RTL2832_TUNER_FC0013 0x29
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#define RTL2832_TUNER_R820T 0x2a
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#define RTL2832_TUNER_R828D 0x2b
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u8 tuner;
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};
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#if IS_ENABLED(CONFIG_DVB_RTL2832)
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struct dvb_frontend *rtl2832_attach(
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const struct rtl2832_config *cfg,
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struct i2c_adapter *i2c
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);
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extern struct i2c_adapter *rtl2832_get_i2c_adapter(
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struct dvb_frontend *fe
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);
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extern struct i2c_adapter *rtl2832_get_private_i2c_adapter(
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struct dvb_frontend *fe
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);
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#else
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static inline struct dvb_frontend *rtl2832_attach(
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const struct rtl2832_config *config,
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struct i2c_adapter *i2c
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)
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{
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pr_warn("%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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static inline struct i2c_adapter *rtl2832_get_i2c_adapter(
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struct dvb_frontend *fe
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)
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{
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return NULL;
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}
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static inline struct i2c_adapter *rtl2832_get_private_i2c_adapter(
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struct dvb_frontend *fe
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)
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{
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return NULL;
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}
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#endif
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#endif /* RTL2832_H */
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