1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21#include "vp702x.h"
22
23struct vp702x_fe_state {
24 struct dvb_frontend fe;
25 struct dvb_usb_device *d;
26
27 struct dvb_frontend_ops ops;
28
29 fe_sec_voltage_t voltage;
30 fe_sec_tone_mode_t tone_mode;
31
32 u8 lnb_buf[8];
33
34 u8 lock;
35 u8 sig;
36 u8 snr;
37
38 unsigned long next_status_check;
39 unsigned long status_check_interval;
40};
41
42static int vp702x_fe_refresh_state(struct vp702x_fe_state *st)
43{
44 u8 buf[10];
45 if (time_after(jiffies,st->next_status_check)) {
46 vp702x_usb_in_op(st->d,READ_STATUS,0,0,buf,10);
47
48 st->lock = buf[4];
49 vp702x_usb_in_op(st->d,READ_TUNER_REG_REQ,0x11,0,&st->snr,1);
50 vp702x_usb_in_op(st->d,READ_TUNER_REG_REQ,0x15,0,&st->sig,1);
51
52 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
53 }
54 return 0;
55}
56
57static u8 vp702x_chksum(u8 *buf,int f, int count)
58{
59 u8 s = 0;
60 int i;
61 for (i = f; i < f+count; i++)
62 s += buf[i];
63 return ~s+1;
64}
65
66static int vp702x_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
67{
68 struct vp702x_fe_state *st = fe->demodulator_priv;
69 vp702x_fe_refresh_state(st);
70 deb_fe("%s\n",__func__);
71
72 if (st->lock == 0)
73 *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
74 else
75 *status = 0;
76
77 if (*status & FE_HAS_LOCK)
78 st->status_check_interval = 1000;
79 else
80 st->status_check_interval = 250;
81 return 0;
82}
83
84
85static int vp702x_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
86{
87 struct vp702x_fe_state *st = fe->demodulator_priv;
88 vp702x_fe_refresh_state(st);
89 *ber = 0;
90 return 0;
91}
92
93
94static int vp702x_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
95{
96 struct vp702x_fe_state *st = fe->demodulator_priv;
97 vp702x_fe_refresh_state(st);
98 *unc = 0;
99 return 0;
100}
101
102static int vp702x_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
103{
104 struct vp702x_fe_state *st = fe->demodulator_priv;
105 vp702x_fe_refresh_state(st);
106
107 *strength = (st->sig << 8) | st->sig;
108 return 0;
109}
110
111static int vp702x_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
112{
113 u8 _snr;
114 struct vp702x_fe_state *st = fe->demodulator_priv;
115 vp702x_fe_refresh_state(st);
116
117 _snr = (st->snr & 0x1f) * 0xff / 0x1f;
118 *snr = (_snr << 8) | _snr;
119 return 0;
120}
121
122static int vp702x_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
123{
124 deb_fe("%s\n",__func__);
125 tune->min_delay_ms = 2000;
126 return 0;
127}
128
129static int vp702x_fe_set_frontend(struct dvb_frontend* fe,
130 struct dvb_frontend_parameters *fep)
131{
132 struct vp702x_fe_state *st = fe->demodulator_priv;
133 u32 freq = fep->frequency/1000;
134
135
136 u64 sr;
137 u8 cmd[8] = { 0 },ibuf[10];
138
139 cmd[0] = (freq >> 8) & 0x7f;
140 cmd[1] = freq & 0xff;
141 cmd[2] = 1;
142
143 sr = (u64) (fep->u.qpsk.symbol_rate/1000) << 20;
144 do_div(sr,88000);
145 cmd[3] = (sr >> 12) & 0xff;
146 cmd[4] = (sr >> 4) & 0xff;
147 cmd[5] = (sr << 4) & 0xf0;
148
149 deb_fe("setting frontend to: %u -> %u (%x) LNB-based GHz, symbolrate: %d -> %lu (%lx)\n",
150 fep->frequency,freq,freq, fep->u.qpsk.symbol_rate,
151 (unsigned long) sr, (unsigned long) sr);
152
153
154
155
156 if (st->voltage == SEC_VOLTAGE_18)
157 cmd[6] |= 0x40;
158
159
160
161
162
163
164
165
166
167
168 cmd[7] = vp702x_chksum(cmd,0,7);
169
170 st->status_check_interval = 250;
171 st->next_status_check = jiffies;
172
173 vp702x_usb_inout_op(st->d,cmd,8,ibuf,10,100);
174
175 if (ibuf[2] == 0 && ibuf[3] == 0)
176 deb_fe("tuning failed.\n");
177 else
178 deb_fe("tuning succeeded.\n");
179
180 return 0;
181}
182
183static int vp702x_fe_init(struct dvb_frontend *fe)
184{
185 struct vp702x_fe_state *st = fe->demodulator_priv;
186 deb_fe("%s\n",__func__);
187 vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
188 return 0;
189}
190
191static int vp702x_fe_sleep(struct dvb_frontend *fe)
192{
193 deb_fe("%s\n",__func__);
194 return 0;
195}
196
197static int vp702x_fe_get_frontend(struct dvb_frontend* fe,
198 struct dvb_frontend_parameters *fep)
199{
200 deb_fe("%s\n",__func__);
201 return 0;
202}
203
204static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
205 struct dvb_diseqc_master_cmd *m)
206{
207 struct vp702x_fe_state *st = fe->demodulator_priv;
208 u8 cmd[8],ibuf[10];
209 memset(cmd,0,8);
210
211 deb_fe("%s\n",__func__);
212
213 if (m->msg_len > 4)
214 return -EINVAL;
215
216 cmd[1] = SET_DISEQC_CMD;
217 cmd[2] = m->msg_len;
218 memcpy(&cmd[3], m->msg, m->msg_len);
219 cmd[7] = vp702x_chksum(cmd,0,7);
220
221 vp702x_usb_inout_op(st->d,cmd,8,ibuf,10,100);
222
223 if (ibuf[2] == 0 && ibuf[3] == 0)
224 deb_fe("diseqc cmd failed.\n");
225 else
226 deb_fe("diseqc cmd succeeded.\n");
227
228 return 0;
229}
230
231static int vp702x_fe_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
232{
233 deb_fe("%s\n",__func__);
234 return 0;
235}
236
237static int vp702x_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
238{
239 struct vp702x_fe_state *st = fe->demodulator_priv;
240 u8 ibuf[10];
241 deb_fe("%s\n",__func__);
242
243 st->tone_mode = tone;
244
245 if (tone == SEC_TONE_ON)
246 st->lnb_buf[2] = 0x02;
247 else
248 st->lnb_buf[2] = 0x00;
249
250 st->lnb_buf[7] = vp702x_chksum(st->lnb_buf,0,7);
251
252 vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100);
253 if (ibuf[2] == 0 && ibuf[3] == 0)
254 deb_fe("set_tone cmd failed.\n");
255 else
256 deb_fe("set_tone cmd succeeded.\n");
257
258 return 0;
259}
260
261static int vp702x_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t
262 voltage)
263{
264 struct vp702x_fe_state *st = fe->demodulator_priv;
265 u8 ibuf[10];
266 deb_fe("%s\n",__func__);
267
268 st->voltage = voltage;
269
270 if (voltage != SEC_VOLTAGE_OFF)
271 st->lnb_buf[4] = 0x01;
272 else
273 st->lnb_buf[4] = 0x00;
274
275 st->lnb_buf[7] = vp702x_chksum(st->lnb_buf,0,7);
276
277 vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100);
278 if (ibuf[2] == 0 && ibuf[3] == 0)
279 deb_fe("set_voltage cmd failed.\n");
280 else
281 deb_fe("set_voltage cmd succeeded.\n");
282
283 return 0;
284}
285
286static void vp702x_fe_release(struct dvb_frontend* fe)
287{
288 struct vp702x_fe_state *st = fe->demodulator_priv;
289 kfree(st);
290}
291
292static struct dvb_frontend_ops vp702x_fe_ops;
293
294struct dvb_frontend * vp702x_fe_attach(struct dvb_usb_device *d)
295{
296 struct vp702x_fe_state *s = kzalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
297 if (s == NULL)
298 goto error;
299
300 s->d = d;
301
302 memcpy(&s->fe.ops,&vp702x_fe_ops,sizeof(struct dvb_frontend_ops));
303 s->fe.demodulator_priv = s;
304
305 s->lnb_buf[1] = SET_LNB_POWER;
306 s->lnb_buf[3] = 0xff;
307
308 return &s->fe;
309error:
310 return NULL;
311}
312
313
314static struct dvb_frontend_ops vp702x_fe_ops = {
315 .info = {
316 .name = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S",
317 .type = FE_QPSK,
318 .frequency_min = 950000,
319 .frequency_max = 2150000,
320 .frequency_stepsize = 1000,
321 .frequency_tolerance = 0,
322 .symbol_rate_min = 1000000,
323 .symbol_rate_max = 45000000,
324 .symbol_rate_tolerance = 500,
325 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
326 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
327 FE_CAN_QPSK |
328 FE_CAN_FEC_AUTO
329 },
330 .release = vp702x_fe_release,
331
332 .init = vp702x_fe_init,
333 .sleep = vp702x_fe_sleep,
334
335 .set_frontend = vp702x_fe_set_frontend,
336 .get_frontend = vp702x_fe_get_frontend,
337 .get_tune_settings = vp702x_fe_get_tune_settings,
338
339 .read_status = vp702x_fe_read_status,
340 .read_ber = vp702x_fe_read_ber,
341 .read_signal_strength = vp702x_fe_read_signal_strength,
342 .read_snr = vp702x_fe_read_snr,
343 .read_ucblocks = vp702x_fe_read_unc_blocks,
344
345 .diseqc_send_master_cmd = vp702x_fe_send_diseqc_msg,
346 .diseqc_send_burst = vp702x_fe_send_diseqc_burst,
347 .set_tone = vp702x_fe_set_tone,
348 .set_voltage = vp702x_fe_set_voltage,
349};
350