2e4e98e788
Making static data const avoids allocation of additional r/w memory and reduces initialisation time. It also provides some additional opportunities for compiler optimisations. Signed-off-by: Lawrence Rust <lvr@softsystem.co.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Driver for Zarlink DVB-T MT352 demodulator
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*
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* Written by Holger Waechtler <holger@qanu.de>
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* and Daniel Mack <daniel@qanu.de>
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*
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* AVerMedia AVerTV DVB-T 771 support by
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* Wolfram Joost <dbox2@frokaschwei.de>
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*
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* Support for Samsung TDTC9251DH01C(M) tuner
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* Copyright (C) 2004 Antonio Mancuso <antonio.mancuso@digitaltelevision.it>
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* Amauri Celani <acelani@essegi.net>
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*
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* DVICO FusionHDTV DVB-T1 and DVICO FusionHDTV DVB-T Lite support by
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* Christopher Pascoe <c.pascoe@itee.uq.edu.au>
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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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*
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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
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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 MT352_H
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#define MT352_H
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#include <linux/dvb/frontend.h>
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struct mt352_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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/* frequencies in kHz */
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int adc_clock; // default: 20480
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int if2; // default: 36166
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/* set if no pll is connected to the secondary i2c bus */
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int no_tuner;
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/* Initialise the demodulator and PLL. Cannot be NULL */
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int (*demod_init)(struct dvb_frontend* fe);
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};
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#if defined(CONFIG_DVB_MT352) || (defined(CONFIG_DVB_MT352_MODULE) && defined(MODULE))
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extern struct dvb_frontend* mt352_attach(const struct mt352_config* config,
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struct i2c_adapter* i2c);
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#else
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static inline struct dvb_frontend* mt352_attach(const struct mt352_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", __func__);
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return NULL;
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}
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#endif // CONFIG_DVB_MT352
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static inline int mt352_write(struct dvb_frontend *fe, const u8 buf[], int len) {
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int r = 0;
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if (fe->ops.write)
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r = fe->ops.write(fe, buf, len);
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return r;
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}
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#endif // MT352_H
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