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Commit f5d82a75 authored by Akihiro Tsukada's avatar Akihiro Tsukada Committed by Mauro Carvalho Chehab
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[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: default avatarAkihiro Tsukada <tskd08@gmail.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 7608f575

drivers/media/dvb-frontends/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -648,6 +648,14 @@ config DVB_MB86A20S 
	  A driver for Fujitsu mb86a20s ISDB-T/ISDB-Tsb demodulator.

	  Say Y when you want to support this frontend.



config DVB_TC90522

	tristate "Toshiba TC90522"

	depends on DVB_CORE && I2C

	default m if !MEDIA_SUBDRV_AUTOSELECT

	help

	  A Toshiba TC90522 2xISDB-T + 2xISDB-S demodulator.

	  Say Y when you want to support this frontend.



comment "Digital terrestrial only tuners/PLL"

	depends on DVB_CORE

drivers/media/dvb-frontends/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -115,3 +115,4 @@ obj-$(CONFIG_DVB_RTL2832_SDR) += rtl2832_sdr.o 
obj-$(CONFIG_DVB_M88RS2000) += m88rs2000.o

obj-$(CONFIG_DVB_AF9033) += af9033.o

obj-$(CONFIG_DVB_AS102_FE) += as102_fe.o

obj-$(CONFIG_DVB_TC90522) += tc90522.o

drivers/media/dvb-frontends/tc90522.c

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+839 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/media/dvb-frontends/tc90522.h

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/*

 * 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 */