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/moduleparam.h>
24#include <linux/init.h>
25
26#include "dvb_frontend.h"
27#include "dvb_dummy_fe.h"
28
29
30struct dvb_dummy_fe_state {
31 struct dvb_frontend_ops ops;
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
71static int dvb_dummy_fe_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
72{
73 return 0;
74}
75
76static int dvb_dummy_fe_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
77{
78 return 0;
79}
80
81static int dvb_dummy_fe_sleep(struct dvb_frontend* fe)
82{
83 return 0;
84}
85
86static int dvb_dummy_fe_init(struct dvb_frontend* fe)
87{
88 return 0;
89}
90
91static int dvb_dummy_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
92{
93 return 0;
94}
95
96static int dvb_dummy_fe_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
97{
98 return 0;
99}
100
101static void dvb_dummy_fe_release(struct dvb_frontend* fe)
102{
103 struct dvb_dummy_fe_state* state = fe->demodulator_priv;
104 kfree(state);
105}
106
107static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
108
109struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void)
110{
111 struct dvb_dummy_fe_state* state = NULL;
112
113 /* allocate memory for the internal state */
114 state = kmalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
115 if (state == NULL) goto error;
116
117 /* setup the state */
118 memcpy(&state->ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
119
120 /* create dvb_frontend */
121 state->frontend.ops = &state->ops;
122 state->frontend.demodulator_priv = state;
123 return &state->frontend;
124
125error:
126 kfree(state);
127 return NULL;
128}
129
130static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
131
132struct dvb_frontend* dvb_dummy_fe_qpsk_attach()
133{
134 struct dvb_dummy_fe_state* state = NULL;
135
136 /* allocate memory for the internal state */
137 state = kmalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
138 if (state == NULL) goto error;
139
140 /* setup the state */
141 memcpy(&state->ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
142
143 /* create dvb_frontend */
144 state->frontend.ops = &state->ops;
145 state->frontend.demodulator_priv = state;
146 return &state->frontend;
147
148error:
149 if (state) kfree(state);
150 return NULL;
151}
152
153static struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
154
155struct dvb_frontend* dvb_dummy_fe_qam_attach()
156{
157 struct dvb_dummy_fe_state* state = NULL;
158
159 /* allocate memory for the internal state */
160 state = kmalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
161 if (state == NULL) goto error;
162
163 /* setup the state */
164 memcpy(&state->ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
165
166 /* create dvb_frontend */
167 state->frontend.ops = &state->ops;
168 state->frontend.demodulator_priv = state;
169 return &state->frontend;
170
171error:
172 if (state) kfree(state);
173 return NULL;
174}
175
176static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
177
178 .info = {
179 .name = "Dummy DVB-T",
180 .type = FE_OFDM,
181 .frequency_min = 0,
182 .frequency_max = 863250000,
183 .frequency_stepsize = 62500,
184 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
185 FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
186 FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
187 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
188 FE_CAN_TRANSMISSION_MODE_AUTO |
189 FE_CAN_GUARD_INTERVAL_AUTO |
190 FE_CAN_HIERARCHY_AUTO,
191 },
192
193 .release = dvb_dummy_fe_release,
194
195 .init = dvb_dummy_fe_init,
196 .sleep = dvb_dummy_fe_sleep,
197
198 .set_frontend = dvb_dummy_fe_set_frontend,
199 .get_frontend = dvb_dummy_fe_get_frontend,
200
201 .read_status = dvb_dummy_fe_read_status,
202 .read_ber = dvb_dummy_fe_read_ber,
203 .read_signal_strength = dvb_dummy_fe_read_signal_strength,
204 .read_snr = dvb_dummy_fe_read_snr,
205 .read_ucblocks = dvb_dummy_fe_read_ucblocks,
206};
207
208static struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
209
210 .info = {
211 .name = "Dummy DVB-C",
212 .type = FE_QAM,
213 .frequency_stepsize = 62500,
214 .frequency_min = 51000000,
215 .frequency_max = 858000000,
216 .symbol_rate_min = (57840000/2)/64, /* SACLK/64 == (XIN/2)/64 */
217 .symbol_rate_max = (57840000/2)/4, /* SACLK/4 */
218 .caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
219 FE_CAN_QAM_128 | FE_CAN_QAM_256 |
220 FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO
221 },
222
223 .release = dvb_dummy_fe_release,
224
225 .init = dvb_dummy_fe_init,
226 .sleep = dvb_dummy_fe_sleep,
227
228 .set_frontend = dvb_dummy_fe_set_frontend,
229 .get_frontend = dvb_dummy_fe_get_frontend,
230
231 .read_status = dvb_dummy_fe_read_status,
232 .read_ber = dvb_dummy_fe_read_ber,
233 .read_signal_strength = dvb_dummy_fe_read_signal_strength,
234 .read_snr = dvb_dummy_fe_read_snr,
235 .read_ucblocks = dvb_dummy_fe_read_ucblocks,
236};
237
238static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
239
240 .info = {
241 .name = "Dummy DVB-S",
242 .type = FE_QPSK,
243 .frequency_min = 950000,
244 .frequency_max = 2150000,
245 .frequency_stepsize = 250, /* kHz for QPSK frontends */
246 .frequency_tolerance = 29500,
247 .symbol_rate_min = 1000000,
248 .symbol_rate_max = 45000000,
249 .caps = FE_CAN_INVERSION_AUTO |
250 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
251 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
252 FE_CAN_QPSK
253 },
254
255 .release = dvb_dummy_fe_release,
256
257 .init = dvb_dummy_fe_init,
258 .sleep = dvb_dummy_fe_sleep,
259
260 .set_frontend = dvb_dummy_fe_set_frontend,
261 .get_frontend = dvb_dummy_fe_get_frontend,
262
263 .read_status = dvb_dummy_fe_read_status,
264 .read_ber = dvb_dummy_fe_read_ber,
265 .read_signal_strength = dvb_dummy_fe_read_signal_strength,
266 .read_snr = dvb_dummy_fe_read_snr,
267 .read_ucblocks = dvb_dummy_fe_read_ucblocks,
268
269 .set_voltage = dvb_dummy_fe_set_voltage,
270 .set_tone = dvb_dummy_fe_set_tone,
271};
272
273MODULE_DESCRIPTION("DVB DUMMY Frontend");
274MODULE_AUTHOR("Emard");
275MODULE_LICENSE("GPL");
276
277EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
278EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
279EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);