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b699c271 IL |
1 | /* |
2 | STB6100 Silicon Tuner wrapper | |
3 | Copyright (C)2009 Igor M. Liplianin (liplianin@me.by) | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | static int stb6100_get_freq(struct dvb_frontend *fe, u32 *frequency) | |
21 | { | |
22 | struct dvb_frontend_ops *frontend_ops = NULL; | |
23 | struct dvb_tuner_ops *tuner_ops = NULL; | |
24 | struct tuner_state state; | |
25 | int err = 0; | |
26 | ||
27 | if (&fe->ops) | |
28 | frontend_ops = &fe->ops; | |
29 | if (&frontend_ops->tuner_ops) | |
30 | tuner_ops = &frontend_ops->tuner_ops; | |
31 | if (tuner_ops->get_state) { | |
32 | if (frontend_ops->i2c_gate_ctrl) | |
33 | frontend_ops->i2c_gate_ctrl(fe, 1); | |
34 | ||
35 | err = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &state); | |
36 | if (err < 0) { | |
37 | printk(KERN_ERR "%s: Invalid parameter\n", __func__); | |
38 | return err; | |
39 | } | |
40 | ||
41 | if (frontend_ops->i2c_gate_ctrl) | |
42 | frontend_ops->i2c_gate_ctrl(fe, 0); | |
43 | ||
44 | *frequency = state.frequency; | |
45 | } | |
46 | ||
47 | return 0; | |
48 | } | |
49 | ||
50 | static int stb6100_set_freq(struct dvb_frontend *fe, u32 frequency) | |
51 | { | |
52 | struct dvb_frontend_ops *frontend_ops = NULL; | |
53 | struct dvb_tuner_ops *tuner_ops = NULL; | |
54 | struct tuner_state state; | |
55 | int err = 0; | |
56 | ||
57 | state.frequency = frequency; | |
58 | if (&fe->ops) | |
59 | frontend_ops = &fe->ops; | |
60 | if (&frontend_ops->tuner_ops) | |
61 | tuner_ops = &frontend_ops->tuner_ops; | |
62 | if (tuner_ops->set_state) { | |
63 | if (frontend_ops->i2c_gate_ctrl) | |
64 | frontend_ops->i2c_gate_ctrl(fe, 1); | |
65 | ||
66 | err = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &state); | |
67 | if (err < 0) { | |
68 | printk(KERN_ERR "%s: Invalid parameter\n", __func__); | |
69 | return err; | |
70 | } | |
71 | ||
72 | if (frontend_ops->i2c_gate_ctrl) | |
73 | frontend_ops->i2c_gate_ctrl(fe, 0); | |
74 | ||
75 | } | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth) | |
81 | { | |
82 | struct dvb_frontend_ops *frontend_ops = NULL; | |
83 | struct dvb_tuner_ops *tuner_ops = NULL; | |
84 | struct tuner_state state; | |
85 | int err = 0; | |
86 | ||
87 | if (&fe->ops) | |
88 | frontend_ops = &fe->ops; | |
89 | if (&frontend_ops->tuner_ops) | |
90 | tuner_ops = &frontend_ops->tuner_ops; | |
91 | if (tuner_ops->get_state) { | |
92 | if (frontend_ops->i2c_gate_ctrl) | |
93 | frontend_ops->i2c_gate_ctrl(fe, 1); | |
94 | ||
95 | err = tuner_ops->get_state(fe, DVBFE_TUNER_BANDWIDTH, &state); | |
96 | if (err < 0) { | |
97 | printk(KERN_ERR "%s: Invalid parameter\n", __func__); | |
98 | return err; | |
99 | } | |
100 | ||
101 | if (frontend_ops->i2c_gate_ctrl) | |
102 | frontend_ops->i2c_gate_ctrl(fe, 0); | |
103 | ||
104 | *bandwidth = state.bandwidth; | |
105 | } | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | static int stb6100_set_bandw(struct dvb_frontend *fe, u32 bandwidth) | |
111 | { | |
112 | struct dvb_frontend_ops *frontend_ops = NULL; | |
113 | struct dvb_tuner_ops *tuner_ops = NULL; | |
114 | struct tuner_state state; | |
115 | int err = 0; | |
116 | ||
117 | state.bandwidth = bandwidth; | |
118 | if (&fe->ops) | |
119 | frontend_ops = &fe->ops; | |
120 | if (&frontend_ops->tuner_ops) | |
121 | tuner_ops = &frontend_ops->tuner_ops; | |
122 | if (tuner_ops->set_state) { | |
123 | if (frontend_ops->i2c_gate_ctrl) | |
124 | frontend_ops->i2c_gate_ctrl(fe, 1); | |
125 | ||
126 | err = tuner_ops->set_state(fe, DVBFE_TUNER_BANDWIDTH, &state); | |
127 | if (err < 0) { | |
128 | printk(KERN_ERR "%s: Invalid parameter\n", __func__); | |
129 | return err; | |
130 | } | |
131 | ||
132 | if (frontend_ops->i2c_gate_ctrl) | |
133 | frontend_ops->i2c_gate_ctrl(fe, 0); | |
134 | ||
135 | } | |
136 | ||
137 | return 0; | |
138 | } |