stb6100_proc.h

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3	STB6100 Silicon Tuner wrapper
  4	Copyright (C)2009 Igor M. Liplianin (liplianin@me.by)
  5
  6*/
  7
  8#include <linux/dvb/frontend.h>
  9#include <media/dvb_frontend.h>
 10
 11static int stb6100_get_freq(struct dvb_frontend *fe, u32 *frequency)
 12{
 13	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
 14	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
 15	int err = 0;
 16
 17	if (tuner_ops->get_frequency) {
 18		if (frontend_ops->i2c_gate_ctrl)
 19			frontend_ops->i2c_gate_ctrl(fe, 1);
 20
 21		err = tuner_ops->get_frequency(fe, frequency);
 22		if (err < 0) {
 23			printk("%s: Invalid parameter\n", __func__);
 24			return err;
 25		}
 26
 27		if (frontend_ops->i2c_gate_ctrl)
 28			frontend_ops->i2c_gate_ctrl(fe, 0);
 29	}
 30
 31	return 0;
 32}
 33
 34static int stb6100_set_freq(struct dvb_frontend *fe, u32 frequency)
 35{
 36	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
 37	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
 38	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 39	u32 bw = c->bandwidth_hz;
 40	int err = 0;
 41
 42	c->frequency = frequency;
 43	c->bandwidth_hz = 0;		/* Don't adjust the bandwidth */
 44
 45	if (tuner_ops->set_params) {
 46		if (frontend_ops->i2c_gate_ctrl)
 47			frontend_ops->i2c_gate_ctrl(fe, 1);
 48
 49		err = tuner_ops->set_params(fe);
 50		c->bandwidth_hz = bw;
 51		if (err < 0) {
 52			printk("%s: Invalid parameter\n", __func__);
 53			return err;
 54		}
 55
 56		if (frontend_ops->i2c_gate_ctrl)
 57			frontend_ops->i2c_gate_ctrl(fe, 0);
 58
 59	}
 60
 61	return 0;
 62}
 63
 64static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth)
 65{
 66	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
 67	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
 68	int err = 0;
 69
 70	if (tuner_ops->get_bandwidth) {
 71		if (frontend_ops->i2c_gate_ctrl)
 72			frontend_ops->i2c_gate_ctrl(fe, 1);
 73
 74		err = tuner_ops->get_bandwidth(fe, bandwidth);
 75		if (err < 0) {
 76			printk(KERN_ERR "%s: Invalid parameter\n", __func__);
 77			return err;
 78		}
 79
 80		if (frontend_ops->i2c_gate_ctrl)
 81			frontend_ops->i2c_gate_ctrl(fe, 0);
 82	}
 83
 84	return 0;
 85}
 86
 87static int stb6100_set_bandw(struct dvb_frontend *fe, u32 bandwidth)
 88{
 89	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
 90	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
 91	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 92	u32 freq = c->frequency;
 93	int err = 0;
 94
 95	c->bandwidth_hz = bandwidth;
 96	c->frequency = 0;		/* Don't adjust the frequency */
 97
 98	if (tuner_ops->set_params) {
 99		if (frontend_ops->i2c_gate_ctrl)
100			frontend_ops->i2c_gate_ctrl(fe, 1);
101
102		err = tuner_ops->set_params(fe);
103		c->frequency = freq;
104		if (err < 0) {
105			printk(KERN_ERR "%s: Invalid parameter\n", __func__);
106			return err;
107		}
108
109		if (frontend_ops->i2c_gate_ctrl)
110			frontend_ops->i2c_gate_ctrl(fe, 0);
111
112	}
113
114	return 0;
115}