1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun STB6100 Silicon Tuner wrapper
4*4882a593Smuzhiyun Copyright (C)2009 Igor M. Liplianin (liplianin@me.by)
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/dvb/frontend.h>
9*4882a593Smuzhiyun #include <media/dvb_frontend.h>
10*4882a593Smuzhiyun
stb6100_get_freq(struct dvb_frontend * fe,u32 * frequency)11*4882a593Smuzhiyun static int stb6100_get_freq(struct dvb_frontend *fe, u32 *frequency)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
14*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
15*4882a593Smuzhiyun int err = 0;
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun if (tuner_ops->get_frequency) {
18*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
19*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 1);
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun err = tuner_ops->get_frequency(fe, frequency);
22*4882a593Smuzhiyun if (err < 0) {
23*4882a593Smuzhiyun printk("%s: Invalid parameter\n", __func__);
24*4882a593Smuzhiyun return err;
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
28*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 0);
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun return 0;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
stb6100_set_freq(struct dvb_frontend * fe,u32 frequency)34*4882a593Smuzhiyun static int stb6100_set_freq(struct dvb_frontend *fe, u32 frequency)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
37*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
38*4882a593Smuzhiyun struct dtv_frontend_properties *c = &fe->dtv_property_cache;
39*4882a593Smuzhiyun u32 bw = c->bandwidth_hz;
40*4882a593Smuzhiyun int err = 0;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun c->frequency = frequency;
43*4882a593Smuzhiyun c->bandwidth_hz = 0; /* Don't adjust the bandwidth */
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun if (tuner_ops->set_params) {
46*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
47*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 1);
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun err = tuner_ops->set_params(fe);
50*4882a593Smuzhiyun c->bandwidth_hz = bw;
51*4882a593Smuzhiyun if (err < 0) {
52*4882a593Smuzhiyun printk("%s: Invalid parameter\n", __func__);
53*4882a593Smuzhiyun return err;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
57*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 0);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun }
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun return 0;
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
stb6100_get_bandw(struct dvb_frontend * fe,u32 * bandwidth)64*4882a593Smuzhiyun static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth)
65*4882a593Smuzhiyun {
66*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
67*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
68*4882a593Smuzhiyun int err = 0;
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun if (tuner_ops->get_bandwidth) {
71*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
72*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 1);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun err = tuner_ops->get_bandwidth(fe, bandwidth);
75*4882a593Smuzhiyun if (err < 0) {
76*4882a593Smuzhiyun printk(KERN_ERR "%s: Invalid parameter\n", __func__);
77*4882a593Smuzhiyun return err;
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
81*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 0);
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun return 0;
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
stb6100_set_bandw(struct dvb_frontend * fe,u32 bandwidth)87*4882a593Smuzhiyun static int stb6100_set_bandw(struct dvb_frontend *fe, u32 bandwidth)
88*4882a593Smuzhiyun {
89*4882a593Smuzhiyun struct dvb_frontend_ops *frontend_ops = &fe->ops;
90*4882a593Smuzhiyun struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
91*4882a593Smuzhiyun struct dtv_frontend_properties *c = &fe->dtv_property_cache;
92*4882a593Smuzhiyun u32 freq = c->frequency;
93*4882a593Smuzhiyun int err = 0;
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun c->bandwidth_hz = bandwidth;
96*4882a593Smuzhiyun c->frequency = 0; /* Don't adjust the frequency */
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun if (tuner_ops->set_params) {
99*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
100*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 1);
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun err = tuner_ops->set_params(fe);
103*4882a593Smuzhiyun c->frequency = freq;
104*4882a593Smuzhiyun if (err < 0) {
105*4882a593Smuzhiyun printk(KERN_ERR "%s: Invalid parameter\n", __func__);
106*4882a593Smuzhiyun return err;
107*4882a593Smuzhiyun }
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun if (frontend_ops->i2c_gate_ctrl)
110*4882a593Smuzhiyun frontend_ops->i2c_gate_ctrl(fe, 0);
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun }
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun return 0;
115*4882a593Smuzhiyun }
116