1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun STB6100 Silicon Tuner
4*4882a593Smuzhiyun Copyright (C) Manu Abraham (abraham.manu@gmail.com)
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun Copyright (C) ST Microelectronics
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/dvb/frontend.h>
11*4882a593Smuzhiyun #include <media/dvb_frontend.h>
12*4882a593Smuzhiyun
stb6100_get_frequency(struct dvb_frontend * fe,u32 * frequency)13*4882a593Smuzhiyun static int stb6100_get_frequency(struct dvb_frontend *fe, u32 *frequency)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
16*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
17*4882a593Smuzhiyun int err = 0;
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun if (tuner_ops->get_frequency) {
20*4882a593Smuzhiyun err = tuner_ops->get_frequency(fe, frequency);
21*4882a593Smuzhiyun if (err < 0) {
22*4882a593Smuzhiyun printk("%s: Invalid parameter\n", __func__);
23*4882a593Smuzhiyun return err;
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun return 0;
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
stb6100_set_frequency(struct dvb_frontend * fe,u32 frequency)29*4882a593Smuzhiyun static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
32*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
33*4882a593Smuzhiyun struct dtv_frontend_properties *c = &fe->dtv_property_cache;
34*4882a593Smuzhiyun u32 bw = c->bandwidth_hz;
35*4882a593Smuzhiyun int err = 0;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun c->frequency = frequency;
38*4882a593Smuzhiyun c->bandwidth_hz = 0; /* Don't adjust the bandwidth */
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun if (tuner_ops->set_params) {
41*4882a593Smuzhiyun err = tuner_ops->set_params(fe);
42*4882a593Smuzhiyun c->bandwidth_hz = bw;
43*4882a593Smuzhiyun if (err < 0) {
44*4882a593Smuzhiyun printk("%s: Invalid parameter\n", __func__);
45*4882a593Smuzhiyun return err;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun return 0;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
stb6100_get_bandwidth(struct dvb_frontend * fe,u32 * bandwidth)51*4882a593Smuzhiyun static int stb6100_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
54*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
55*4882a593Smuzhiyun int err = 0;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun if (tuner_ops->get_bandwidth) {
58*4882a593Smuzhiyun err = tuner_ops->get_bandwidth(fe, bandwidth);
59*4882a593Smuzhiyun if (err < 0) {
60*4882a593Smuzhiyun printk("%s: Invalid parameter\n", __func__);
61*4882a593Smuzhiyun return err;
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
stb6100_set_bandwidth(struct dvb_frontend * fe,u32 bandwidth)67*4882a593Smuzhiyun static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
70*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
71*4882a593Smuzhiyun struct dtv_frontend_properties *c = &fe->dtv_property_cache;
72*4882a593Smuzhiyun u32 freq = c->frequency;
73*4882a593Smuzhiyun int err = 0;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun c->bandwidth_hz = bandwidth;
76*4882a593Smuzhiyun c->frequency = 0; /* Don't adjust the frequency */
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun if (tuner_ops->set_params) {
79*4882a593Smuzhiyun err = tuner_ops->set_params(fe);
80*4882a593Smuzhiyun c->frequency = freq;
81*4882a593Smuzhiyun if (err < 0) {
82*4882a593Smuzhiyun printk("%s: Invalid parameter\n", __func__);
83*4882a593Smuzhiyun return err;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun return 0;
87*4882a593Smuzhiyun }
88