1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3	STB6100 Silicon Tuner
4	Copyright (C) Manu Abraham (abraham.manu@gmail.com)
5
6	Copyright (C) ST Microelectronics
7
8*/
9
10#include <linux/dvb/frontend.h>
11#include <media/dvb_frontend.h>
12
13static int stb6100_get_frequency(struct dvb_frontend *fe, u32 *frequency)
14{
15	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
16	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
17	int err = 0;
18
19	if (tuner_ops->get_frequency) {
20		err = tuner_ops->get_frequency(fe, frequency);
21		if (err < 0) {
22			printk("%s: Invalid parameter\n", __func__);
23			return err;
24		}
25	}
26	return 0;
27}
28
29static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
30{
31	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
32	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
33	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
34	u32 bw = c->bandwidth_hz;
35	int err = 0;
36
37	c->frequency = frequency;
38	c->bandwidth_hz = 0;		/* Don't adjust the bandwidth */
39
40	if (tuner_ops->set_params) {
41		err = tuner_ops->set_params(fe);
42		c->bandwidth_hz = bw;
43		if (err < 0) {
44			printk("%s: Invalid parameter\n", __func__);
45			return err;
46		}
47	}
48	return 0;
49}
50
51static int stb6100_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
52{
53	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
54	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
55	int err = 0;
56
57	if (tuner_ops->get_bandwidth) {
58		err = tuner_ops->get_bandwidth(fe, bandwidth);
59		if (err < 0) {
60			printk("%s: Invalid parameter\n", __func__);
61			return err;
62		}
63	}
64	return 0;
65}
66
67static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
68{
69	struct dvb_frontend_ops	*frontend_ops = &fe->ops;
70	struct dvb_tuner_ops	*tuner_ops = &frontend_ops->tuner_ops;
71	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
72	u32 freq = c->frequency;
73	int err = 0;
74
75	c->bandwidth_hz = bandwidth;
76	c->frequency = 0;		/* Don't adjust the frequency */
77
78	if (tuner_ops->set_params) {
79		err = tuner_ops->set_params(fe);
80		c->frequency = freq;
81		if (err < 0) {
82			printk("%s: Invalid parameter\n", __func__);
83			return err;
84		}
85	}
86	return 0;
87}
88