kernel-ark/drivers/media/dvb-frontends/tc90522.h
Akihiro Tsukada f5d82a75e6 [media] tc90522: add driver for Toshiba TC90522 quad demodulator
This patch adds driver for tc90522 demodulator chips.
The chip contains 4 demod modules that run in parallel and are independently
controllable via separate I2C addresses.
Two of the modules are for ISDB-T and the rest for ISDB-S.
It is used in earthsoft pt3 cards.

Note that this driver does not init the chip,
because the initilization sequence / register setting is not disclosed.
Thus, the driver assumes that the chips are initilized externally
by its parent board driver before fe->ops->init() are called.
Earthsoft PT3 PCIe card, for example, contains the init sequence
in its private memory and provides a command to trigger the sequence.

Signed-off-by: Akihiro Tsukada <tskd08@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-09-23 17:04:00 -03:00

43 lines
1.2 KiB
C

/*
* Toshiba TC90522 Demodulator
*
* Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com>
*
* 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 version 2.
*
*
* 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.
*/
/*
* The demod has 4 input (2xISDB-T and 2xISDB-S),
* and provides independent sub modules for each input.
* As the sub modules work in parallel and have the separate i2c addr's,
* this driver treats each sub module as one demod device.
*/
#ifndef TC90522_H
#define TC90522_H
#include <linux/i2c.h>
#include "dvb_frontend.h"
/* I2C device types */
#define TC90522_I2C_DEV_SAT "tc90522sat"
#define TC90522_I2C_DEV_TER "tc90522ter"
struct tc90522_config {
/* [OUT] frontend returned by driver */
struct dvb_frontend *fe;
/* [OUT] tuner I2C adapter returned by driver */
struct i2c_adapter *tuner_i2c;
};
#endif /* TC90522_H */