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22#include "dvb_frontend.h"
23#include "ttusbdecfe.h"
24
25
26#define LOF_HI 10600000
27#define LOF_LO 9750000
28
29struct ttusbdecfe_state {
30
31
32 const struct ttusbdecfe_config* config;
33
34 struct dvb_frontend frontend;
35
36 u8 hi_band;
37 u8 voltage;
38};
39
40
41static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe,
42 fe_status_t *status)
43{
44 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI |
45 FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;
46 return 0;
47}
48
49
50static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe,
51 fe_status_t *status)
52{
53 struct ttusbdecfe_state* state = fe->demodulator_priv;
54 u8 b[] = { 0x00, 0x00, 0x00, 0x00,
55 0x00, 0x00, 0x00, 0x00 };
56 u8 result[4];
57 int len, ret;
58
59 *status=0;
60
61 ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result);
62 if(ret)
63 return ret;
64
65 if(len != 4) {
66 printk(KERN_ERR "%s: unexpected reply\n", __func__);
67 return -EIO;
68 }
69
70 switch(result[3]) {
71 case 1:
72 case 2:
73 break;
74 case 3:
75 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI |
76 FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;
77 break;
78 case 4:
79 *status = FE_TIMEDOUT;
80 break;
81 default:
82 pr_info("%s: returned unknown value: %d\n",
83 __func__, result[3]);
84 return -EIO;
85 }
86
87 return 0;
88}
89
90static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
91{
92 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
93 u8 b[] = { 0x00, 0x00, 0x00, 0x03,
94 0x00, 0x00, 0x00, 0x00,
95 0x00, 0x00, 0x00, 0x01,
96 0x00, 0x00, 0x00, 0xff,
97 0x00, 0x00, 0x00, 0xff };
98
99 __be32 freq = htonl(p->frequency / 1000);
100 memcpy(&b[4], &freq, sizeof (u32));
101 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
102
103 return 0;
104}
105
106static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe,
107 struct dvb_frontend_tune_settings* fesettings)
108{
109 fesettings->min_delay_ms = 1500;
110
111 fesettings->step_size = 0;
112 fesettings->max_drift = 0;
113 return 0;
114}
115
116static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
117{
118 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
119
120 u8 b[] = { 0x00, 0x00, 0x00, 0x01,
121 0x00, 0x00, 0x00, 0x00,
122 0x00, 0x00, 0x00, 0x01,
123 0x00, 0x00, 0x00, 0x00,
124 0x00, 0x00, 0x00, 0x00,
125 0x00, 0x00, 0x00, 0x00,
126 0x00, 0x00, 0x00, 0x00,
127 0x00, 0x00, 0x00, 0x00,
128 0x00, 0x00, 0x00, 0x00,
129 0x00, 0x00, 0x00, 0x00 };
130 __be32 freq;
131 __be32 sym_rate;
132 __be32 band;
133 __be32 lnb_voltage;
134
135 freq = htonl(p->frequency +
136 (state->hi_band ? LOF_HI : LOF_LO));
137 memcpy(&b[4], &freq, sizeof(u32));
138 sym_rate = htonl(p->u.qam.symbol_rate);
139 memcpy(&b[12], &sym_rate, sizeof(u32));
140 band = htonl(state->hi_band ? LOF_HI : LOF_LO);
141 memcpy(&b[24], &band, sizeof(u32));
142 lnb_voltage = htonl(state->voltage);
143 memcpy(&b[28], &lnb_voltage, sizeof(u32));
144
145 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
146
147 return 0;
148}
149
150static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd)
151{
152 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
153 u8 b[] = { 0x00, 0xff, 0x00, 0x00,
154 0x00, 0x00, 0x00, 0x00,
155 0x00, 0x00 };
156
157 memcpy(&b[4], cmd->msg, cmd->msg_len);
158
159 state->config->send_command(fe, 0x72,
160 sizeof(b) - (6 - cmd->msg_len), b,
161 NULL, NULL);
162
163 return 0;
164}
165
166
167static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
168{
169 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
170
171 state->hi_band = (SEC_TONE_ON == tone);
172
173 return 0;
174}
175
176
177static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
178{
179 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
180
181 switch (voltage) {
182 case SEC_VOLTAGE_13:
183 state->voltage = 13;
184 break;
185 case SEC_VOLTAGE_18:
186 state->voltage = 18;
187 break;
188 default:
189 return -EINVAL;
190 }
191
192 return 0;
193}
194
195static void ttusbdecfe_release(struct dvb_frontend* fe)
196{
197 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
198 kfree(state);
199}
200
201static struct dvb_frontend_ops ttusbdecfe_dvbt_ops;
202
203struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config)
204{
205 struct ttusbdecfe_state* state = NULL;
206
207
208 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
209 if (state == NULL)
210 return NULL;
211
212
213 state->config = config;
214
215
216 memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops));
217 state->frontend.demodulator_priv = state;
218 return &state->frontend;
219}
220
221static struct dvb_frontend_ops ttusbdecfe_dvbs_ops;
222
223struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config)
224{
225 struct ttusbdecfe_state* state = NULL;
226
227
228 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
229 if (state == NULL)
230 return NULL;
231
232
233 state->config = config;
234 state->voltage = 0;
235 state->hi_band = 0;
236
237
238 memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops));
239 state->frontend.demodulator_priv = state;
240 return &state->frontend;
241}
242
243static struct dvb_frontend_ops ttusbdecfe_dvbt_ops = {
244
245 .info = {
246 .name = "TechnoTrend/Hauppauge DEC2000-t Frontend",
247 .type = FE_OFDM,
248 .frequency_min = 51000000,
249 .frequency_max = 858000000,
250 .frequency_stepsize = 62500,
251 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
252 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
253 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
254 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
255 FE_CAN_HIERARCHY_AUTO,
256 },
257
258 .release = ttusbdecfe_release,
259
260 .set_frontend = ttusbdecfe_dvbt_set_frontend,
261
262 .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings,
263
264 .read_status = ttusbdecfe_dvbt_read_status,
265};
266
267static struct dvb_frontend_ops ttusbdecfe_dvbs_ops = {
268
269 .info = {
270 .name = "TechnoTrend/Hauppauge DEC3000-s Frontend",
271 .type = FE_QPSK,
272 .frequency_min = 950000,
273 .frequency_max = 2150000,
274 .frequency_stepsize = 125,
275 .symbol_rate_min = 1000000,
276 .symbol_rate_max = 45000000,
277 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
278 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
279 FE_CAN_QPSK
280 },
281
282 .release = ttusbdecfe_release,
283
284 .set_frontend = ttusbdecfe_dvbs_set_frontend,
285
286 .read_status = ttusbdecfe_dvbs_read_status,
287
288 .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd,
289 .set_voltage = ttusbdecfe_dvbs_set_voltage,
290 .set_tone = ttusbdecfe_dvbs_set_tone,
291};
292
293MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver");
294MODULE_AUTHOR("Alex Woods/Andrew de Quincey");
295MODULE_LICENSE("GPL");
296
297EXPORT_SYMBOL(ttusbdecfe_dvbt_attach);
298EXPORT_SYMBOL(ttusbdecfe_dvbs_attach);
299
