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
stb6100_get_freq(struct dvb_frontend * fe,u32 * frequency)11 static 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
stb6100_set_freq(struct dvb_frontend * fe,u32 frequency)34 static 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
stb6100_get_bandw(struct dvb_frontend * fe,u32 * bandwidth)64 static 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
stb6100_set_bandw(struct dvb_frontend * fe,u32 bandwidth)87 static 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 }
116