tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Driver for Dummy Frontend
3 *
4 * Written by Emard <emard@softhome.net>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 *
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.=
20 */
21
22#include <linux/module.h>
23#include <linux/init.h>
24#include <linux/string.h>
25#include <linux/slab.h>
26
27#include "dvb_frontend.h"
28#include "dvb_dummy_fe.h"
29
30
31struct dvb_dummy_fe_state {
32 struct dvb_frontend frontend;
33};
34
35
36static int dvb_dummy_fe_read_status(struct dvb_frontend* fe, fe_status_t* status)
37{
38 *status = FE_HAS_SIGNAL
39 | FE_HAS_CARRIER
40 | FE_HAS_VITERBI
41 | FE_HAS_SYNC
42 | FE_HAS_LOCK;
43
44 return 0;
45}
46
47static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber)
48{
49 *ber = 0;
50 return 0;
51}
52
53static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength)
54{
55 *strength = 0;
56 return 0;
57}
58
59static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr)
60{
61 *snr = 0;
62 return 0;
63}
64
65static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
66{
67 *ucblocks = 0;
68 return 0;
69}
70
71/*
72 * Only needed if it actually reads something from the hardware
73 */
74static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe)
75{
76 return 0;
77}
78
79static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
80{
81 if (fe->ops.tuner_ops.set_params) {
82 fe->ops.tuner_ops.set_params(fe);
83 if (fe->ops.i2c_gate_ctrl)
84 fe->ops.i2c_gate_ctrl(fe, 0);
85 }
86
87 return 0;
88}
89
90static int dvb_dummy_fe_sleep(struct dvb_frontend* fe)
91{
92 return 0;
93}
94
95static int dvb_dummy_fe_init(struct dvb_frontend* fe)
96{
97 return 0;
98}
99
100static int dvb_dummy_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
101{
102 return 0;
103}
104
105static int dvb_dummy_fe_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
106{
107 return 0;
108}
109
110static void dvb_dummy_fe_release(struct dvb_frontend* fe)
111{
112 struct dvb_dummy_fe_state* state = fe->demodulator_priv;
113 kfree(state);
114}
115
116static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
117
118struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void)
119{
120 struct dvb_dummy_fe_state* state = NULL;
121
122 /* allocate memory for the internal state */
123 state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
124 if (!state)
125 return NULL;
126
127 /* create dvb_frontend */
128 memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
129 state->frontend.demodulator_priv = state;
130 return &state->frontend;
131}
132
133static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
134
135struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
136{
137 struct dvb_dummy_fe_state* state = NULL;
138
139 /* allocate memory for the internal state */
140 state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
141 if (!state)
142 return NULL;
143
144 /* create dvb_frontend */
145 memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
146 state->frontend.demodulator_priv = state;
147 return &state->frontend;
148}
149
150static struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
151
152struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
153{
154 struct dvb_dummy_fe_state* state = NULL;
155
156 /* allocate memory for the internal state */
157 state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
158 if (!state)
159 return NULL;
160
161 /* create dvb_frontend */
162 memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
163 state->frontend.demodulator_priv = state;
164 return &state->frontend;
165}
166
167static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
168 .delsys = { SYS_DVBT },
169 .info = {
170 .name = "Dummy DVB-T",
171 .frequency_min = 0,
172 .frequency_max = 863250000,
173 .frequency_stepsize = 62500,
174 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
175 FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
176 FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
177 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
178 FE_CAN_TRANSMISSION_MODE_AUTO |
179 FE_CAN_GUARD_INTERVAL_AUTO |
180 FE_CAN_HIERARCHY_AUTO,
181 },
182
183 .release = dvb_dummy_fe_release,
184
185 .init = dvb_dummy_fe_init,
186 .sleep = dvb_dummy_fe_sleep,
187
188 .set_frontend = dvb_dummy_fe_set_frontend,
189 .get_frontend = dvb_dummy_fe_get_frontend,
190
191 .read_status = dvb_dummy_fe_read_status,
192 .read_ber = dvb_dummy_fe_read_ber,
193 .read_signal_strength = dvb_dummy_fe_read_signal_strength,
194 .read_snr = dvb_dummy_fe_read_snr,
195 .read_ucblocks = dvb_dummy_fe_read_ucblocks,
196};
197
198static struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
199 .delsys = { SYS_DVBC_ANNEX_A },
200 .info = {
201 .name = "Dummy DVB-C",
202 .frequency_stepsize = 62500,
203 .frequency_min = 51000000,
204 .frequency_max = 858000000,
205 .symbol_rate_min = (57840000/2)/64, /* SACLK/64 == (XIN/2)/64 */
206 .symbol_rate_max = (57840000/2)/4, /* SACLK/4 */
207 .caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
208 FE_CAN_QAM_128 | FE_CAN_QAM_256 |
209 FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO
210 },
211
212 .release = dvb_dummy_fe_release,
213
214 .init = dvb_dummy_fe_init,
215 .sleep = dvb_dummy_fe_sleep,
216
217 .set_frontend = dvb_dummy_fe_set_frontend,
218 .get_frontend = dvb_dummy_fe_get_frontend,
219
220 .read_status = dvb_dummy_fe_read_status,
221 .read_ber = dvb_dummy_fe_read_ber,
222 .read_signal_strength = dvb_dummy_fe_read_signal_strength,
223 .read_snr = dvb_dummy_fe_read_snr,
224 .read_ucblocks = dvb_dummy_fe_read_ucblocks,
225};
226
227static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
228 .delsys = { SYS_DVBS },
229 .info = {
230 .name = "Dummy DVB-S",
231 .frequency_min = 950000,
232 .frequency_max = 2150000,
233 .frequency_stepsize = 250, /* kHz for QPSK frontends */
234 .frequency_tolerance = 29500,
235 .symbol_rate_min = 1000000,
236 .symbol_rate_max = 45000000,
237 .caps = FE_CAN_INVERSION_AUTO |
238 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
239 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
240 FE_CAN_QPSK
241 },
242
243 .release = dvb_dummy_fe_release,
244
245 .init = dvb_dummy_fe_init,
246 .sleep = dvb_dummy_fe_sleep,
247
248 .set_frontend = dvb_dummy_fe_set_frontend,
249 .get_frontend = dvb_dummy_fe_get_frontend,
250
251 .read_status = dvb_dummy_fe_read_status,
252 .read_ber = dvb_dummy_fe_read_ber,
253 .read_signal_strength = dvb_dummy_fe_read_signal_strength,
254 .read_snr = dvb_dummy_fe_read_snr,
255 .read_ucblocks = dvb_dummy_fe_read_ucblocks,
256
257 .set_voltage = dvb_dummy_fe_set_voltage,
258 .set_tone = dvb_dummy_fe_set_tone,
259};
260
261MODULE_DESCRIPTION("DVB DUMMY Frontend");
262MODULE_AUTHOR("Emard");
263MODULE_LICENSE("GPL");
264
265EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
266EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
267EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);