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When a front-end is disabled, card drivers that use it are compiled with a stub version of the front-end's attach function. This way they have no references to the front-end's code and don't need it to be loaded. If a card driver is compiled into the kernel, and a front-end is a module, then that front-end is effectively disabled wrt the card driver. In this case, the card driver should get the stub version. This was not happening. The stub vs real attach function selection is changed so that when the front-end is a module the real attach function is only used if the card driver is a module as well. This means a module front-end will be supported by card drivers that are modules and not supported by card drivers compiled into the kernel. Signed-off-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
/*
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Driver for ST STV0299 demodulator
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Copyright (C) 2001-2002 Convergence Integrated Media GmbH
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<ralph@convergence.de>,
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<holger@convergence.de>,
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<js@convergence.de>
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Philips SU1278/SH
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Copyright (C) 2002 by Peter Schildmann <peter.schildmann@web.de>
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LG TDQF-S001F
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Copyright (C) 2002 Felix Domke <tmbinc@elitedvb.net>
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& Andreas Oberritter <obi@linuxtv.org>
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Support for Samsung TBMU24112IMB used on Technisat SkyStar2 rev. 2.6B
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Copyright (C) 2003 Vadim Catana <skystar@moldova.cc>:
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Support for Philips SU1278 on Technotrend hardware
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Copyright (C) 2004 Andrew de Quincey <adq_dvb@lidskialf.net>
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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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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef STV0299_H
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#define STV0299_H
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#include <linux/dvb/frontend.h>
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#include "dvb_frontend.h"
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#define STV0229_LOCKOUTPUT_0 0
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#define STV0229_LOCKOUTPUT_1 1
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#define STV0229_LOCKOUTPUT_CF 2
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#define STV0229_LOCKOUTPUT_LK 3
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#define STV0299_VOLT13_OP0 0
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#define STV0299_VOLT13_OP1 1
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struct stv0299_config
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{
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/* the demodulator's i2c address */
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u8 demod_address;
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/* inittab - array of pairs of values.
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* First of each pair is the register, second is the value.
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* List should be terminated with an 0xff, 0xff pair.
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*/
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u8* inittab;
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/* master clock to use */
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u32 mclk;
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/* does the inversion require inversion? */
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u8 invert:1;
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/* Skip reinitialisation? */
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u8 skip_reinit:1;
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/* LOCK OUTPUT setting */
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u8 lock_output:2;
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/* Is 13v controlled by OP0 or OP1? */
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u8 volt13_op0_op1:1;
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/* minimum delay before retuning */
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int min_delay_ms;
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/* Set the symbol rate */
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int (*set_symbol_rate)(struct dvb_frontend* fe, u32 srate, u32 ratio);
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};
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#if defined(CONFIG_DVB_STV0299) || (defined(CONFIG_DVB_STV0299_MODULE) && defined(MODULE))
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extern struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
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struct i2c_adapter* i2c);
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#else
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static inline struct dvb_frontend* stv0299_attach(const struct stv0299_config* config,
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struct i2c_adapter* i2c)
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{
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printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
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return NULL;
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}
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#endif // CONFIG_DVB_STV0299
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static inline int stv0299_writereg(struct dvb_frontend *fe, u8 reg, u8 val) {
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int r = 0;
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u8 buf[] = {reg, val};
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if (fe->ops.write)
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r = fe->ops.write(fe, buf, 2);
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return r;
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}
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#endif // STV0299_H
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