128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/*
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STB6100 Silicon Tuner wrapper
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Copyright (C)2009 Igor M. Liplianin (liplianin@me.by)
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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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#include <linux/dvb/frontend.h>
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#include "dvb_frontend.h"
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static int stb6100_get_freq(struct dvb_frontend *fe, u32 *frequency)
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{
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struct dvb_frontend_ops *frontend_ops = &fe->ops;
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struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
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int err = 0;
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if (tuner_ops->get_frequency) {
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 1);
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err = tuner_ops->get_frequency(fe, frequency);
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if (err < 0) {
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printk("%s: Invalid parameter\n", __func__);
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return err;
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}
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 0);
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}
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return 0;
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}
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static int stb6100_set_freq(struct dvb_frontend *fe, u32 frequency)
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{
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struct dvb_frontend_ops *frontend_ops = &fe->ops;
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struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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u32 bw = c->bandwidth_hz;
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int err = 0;
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c->frequency = frequency;
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c->bandwidth_hz = 0; /* Don't adjust the bandwidth */
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if (tuner_ops->set_params) {
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 1);
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err = tuner_ops->set_params(fe);
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c->bandwidth_hz = bw;
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if (err < 0) {
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printk("%s: Invalid parameter\n", __func__);
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return err;
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}
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 0);
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}
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return 0;
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}
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static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth)
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{
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struct dvb_frontend_ops *frontend_ops = &fe->ops;
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struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
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int err = 0;
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if (tuner_ops->get_bandwidth) {
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 1);
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err = tuner_ops->get_bandwidth(fe, bandwidth);
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if (err < 0) {
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printk(KERN_ERR "%s: Invalid parameter\n", __func__);
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return err;
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}
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 0);
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}
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return 0;
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}
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static int stb6100_set_bandw(struct dvb_frontend *fe, u32 bandwidth)
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{
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struct dvb_frontend_ops *frontend_ops = &fe->ops;
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struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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u32 freq = c->frequency;
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int err = 0;
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c->bandwidth_hz = bandwidth;
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c->frequency = 0; /* Don't adjust the frequency */
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if (tuner_ops->set_params) {
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 1);
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err = tuner_ops->set_params(fe);
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c->frequency = freq;
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if (err < 0) {
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printk(KERN_ERR "%s: Invalid parameter\n", __func__);
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return err;
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}
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if (frontend_ops->i2c_gate_ctrl)
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frontend_ops->i2c_gate_ctrl(fe, 0);
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}
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return 0;
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}
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