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In some designs, the tuner silicon may be on an i2c bus behind an i2c gate, controlled by the analog demodulator. We already have a method to control such i2c gates when they are controlled by the digital demodulator, but in some hybrid designs, there may be an i2c gate controlled by each demodulator. For example, when in analog tuning mode, one would access the tuner by opening the i2c gate controlled by the analog demodulator, while when in digital tuning mode, one would access the tuner by opening the i2c gate controlled by the digital demodulator. We must add this callback function to analog_tuner_ops in order to handle such configurations. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*
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tuner-driver.h - interface for different tuners
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Copyright (C) 1997 Markus Schroeder (schroedm@uni-duesseldorf.de)
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minor modifications by Ralph Metzler (rjkm@thp.uni-koeln.de)
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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 __TUNER_DRIVER_H__
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#define __TUNER_DRIVER_H__
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#include <linux/videodev2.h>
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#include <linux/i2c.h>
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#include "tuner-i2c.h"
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#include "dvb_frontend.h"
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extern unsigned const int tuner_count;
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struct tuner;
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struct analog_tuner_ops {
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void (*set_tv_freq)(struct dvb_frontend *fe, unsigned int freq);
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void (*set_radio_freq)(struct dvb_frontend *fe, unsigned int freq);
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int (*has_signal)(struct dvb_frontend *fe);
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int (*is_stereo)(struct dvb_frontend *fe);
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int (*get_afc)(struct dvb_frontend *fe);
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void (*tuner_status)(struct dvb_frontend *fe);
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void (*standby)(struct dvb_frontend *fe);
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void (*release)(struct dvb_frontend *fe);
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int (*i2c_gate_ctrl)(struct dvb_frontend *fe, int enable);
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};
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struct tuner {
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/* device */
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struct i2c_client i2c;
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unsigned int type; /* chip type */
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unsigned int mode;
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unsigned int mode_mask; /* Combination of allowable modes */
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unsigned int tv_freq; /* keep track of the current settings */
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unsigned int radio_freq;
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unsigned int audmode;
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v4l2_std_id std;
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int using_v4l2;
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struct dvb_frontend fe;
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/* used by tda9887 */
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unsigned int tda9887_config;
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unsigned int config;
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int (*tuner_callback) (void *dev, int command,int arg);
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};
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/* ------------------------------------------------------------------------ */
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#define tuner_warn(fmt, arg...) do {\
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printk(KERN_WARNING "%s %d-%04x: " fmt, t->i2c.driver->driver.name, \
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i2c_adapter_id(t->i2c.adapter), t->i2c.addr , ##arg); } while (0)
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#define tuner_info(fmt, arg...) do {\
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printk(KERN_INFO "%s %d-%04x: " fmt, t->i2c.driver->driver.name, \
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i2c_adapter_id(t->i2c.adapter), t->i2c.addr , ##arg); } while (0)
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#define tuner_dbg(fmt, arg...) do {\
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extern int tuner_debug; \
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if (tuner_debug) \
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printk(KERN_DEBUG "%s %d-%04x: " fmt, t->i2c.driver->driver.name, \
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i2c_adapter_id(t->i2c.adapter), t->i2c.addr , ##arg); } while (0)
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#endif /* __TUNER_DRIVER_H__ */
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-basic-offset: 8
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* End:
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*/
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