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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 enum fe_sec_voltage voltage;
30 enum fe_sec_tone_mode 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 struct vp702x_device_state *dst = st->d->priv;
45 u8 *buf;
46
47 if (time_after(jiffies, st->next_status_check)) {
48 mutex_lock(&dst->buf_mutex);
49 buf = dst->buf;
50
51 vp702x_usb_in_op(st->d, READ_STATUS, 0, 0, buf, 10);
52 st->lock = buf[4];
53
54 vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x11, 0, buf, 1);
55 st->snr = buf[0];
56
57 vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x15, 0, buf, 1);
58 st->sig = buf[0];
59
60 mutex_unlock(&dst->buf_mutex);
61 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
62 }
63 return 0;
64}
65
66static u8 vp702x_chksum(u8 *buf,int f, int count)
67{
68 u8 s = 0;
69 int i;
70 for (i = f; i < f+count; i++)
71 s += buf[i];
72 return ~s+1;
73}
74
75static int vp702x_fe_read_status(struct dvb_frontend *fe,
76 enum fe_status *status)
77{
78 struct vp702x_fe_state *st = fe->demodulator_priv;
79 vp702x_fe_refresh_state(st);
80 deb_fe("%s\n",__func__);
81
82 if (st->lock == 0)
83 *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
84 else
85 *status = 0;
86
87 if (*status & FE_HAS_LOCK)
88 st->status_check_interval = 1000;
89 else
90 st->status_check_interval = 250;
91 return 0;
92}
93
94
95static int vp702x_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
96{
97 struct vp702x_fe_state *st = fe->demodulator_priv;
98 vp702x_fe_refresh_state(st);
99 *ber = 0;
100 return 0;
101}
102
103
104static int vp702x_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
105{
106 struct vp702x_fe_state *st = fe->demodulator_priv;
107 vp702x_fe_refresh_state(st);
108 *unc = 0;
109 return 0;
110}
111
112static int vp702x_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
113{
114 struct vp702x_fe_state *st = fe->demodulator_priv;
115 vp702x_fe_refresh_state(st);
116
117 *strength = (st->sig << 8) | st->sig;
118 return 0;
119}
120
121static int vp702x_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
122{
123 u8 _snr;
124 struct vp702x_fe_state *st = fe->demodulator_priv;
125 vp702x_fe_refresh_state(st);
126
127 _snr = (st->snr & 0x1f) * 0xff / 0x1f;
128 *snr = (_snr << 8) | _snr;
129 return 0;
130}
131
132static int vp702x_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
133{
134 deb_fe("%s\n",__func__);
135 tune->min_delay_ms = 2000;
136 return 0;
137}
138
139static int vp702x_fe_set_frontend(struct dvb_frontend *fe)
140{
141 struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
142 struct vp702x_fe_state *st = fe->demodulator_priv;
143 struct vp702x_device_state *dst = st->d->priv;
144 u32 freq = fep->frequency/1000;
145
146
147 u64 sr;
148 u8 *cmd;
149
150 mutex_lock(&dst->buf_mutex);
151
152 cmd = dst->buf;
153 memset(cmd, 0, 10);
154
155 cmd[0] = (freq >> 8) & 0x7f;
156 cmd[1] = freq & 0xff;
157 cmd[2] = 1;
158
159 sr = (u64) (fep->symbol_rate/1000) << 20;
160 do_div(sr,88000);
161 cmd[3] = (sr >> 12) & 0xff;
162 cmd[4] = (sr >> 4) & 0xff;
163 cmd[5] = (sr << 4) & 0xf0;
164
165 deb_fe("setting frontend to: %u -> %u (%x) LNB-based GHz, symbolrate: %d -> %lu (%lx)\n",
166 fep->frequency, freq, freq, fep->symbol_rate,
167 (unsigned long) sr, (unsigned long) sr);
168
169
170
171
172 if (st->voltage == SEC_VOLTAGE_18)
173 cmd[6] |= 0x40;
174
175
176
177
178
179
180
181
182
183
184 cmd[7] = vp702x_chksum(cmd,0,7);
185
186 st->status_check_interval = 250;
187 st->next_status_check = jiffies;
188
189 vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100);
190
191 if (cmd[2] == 0 && cmd[3] == 0)
192 deb_fe("tuning failed.\n");
193 else
194 deb_fe("tuning succeeded.\n");
195
196 mutex_unlock(&dst->buf_mutex);
197
198 return 0;
199}
200
201static int vp702x_fe_init(struct dvb_frontend *fe)
202{
203 struct vp702x_fe_state *st = fe->demodulator_priv;
204 deb_fe("%s\n",__func__);
205 vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
206 return 0;
207}
208
209static int vp702x_fe_sleep(struct dvb_frontend *fe)
210{
211 deb_fe("%s\n",__func__);
212 return 0;
213}
214
215static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
216 struct dvb_diseqc_master_cmd *m)
217{
218 u8 *cmd;
219 struct vp702x_fe_state *st = fe->demodulator_priv;
220 struct vp702x_device_state *dst = st->d->priv;
221
222 deb_fe("%s\n",__func__);
223
224 if (m->msg_len > 4)
225 return -EINVAL;
226
227 mutex_lock(&dst->buf_mutex);
228
229 cmd = dst->buf;
230 cmd[1] = SET_DISEQC_CMD;
231 cmd[2] = m->msg_len;
232 memcpy(&cmd[3], m->msg, m->msg_len);
233 cmd[7] = vp702x_chksum(cmd, 0, 7);
234
235 vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100);
236
237 if (cmd[2] == 0 && cmd[3] == 0)
238 deb_fe("diseqc cmd failed.\n");
239 else
240 deb_fe("diseqc cmd succeeded.\n");
241
242 mutex_unlock(&dst->buf_mutex);
243
244 return 0;
245}
246
247static int vp702x_fe_send_diseqc_burst(struct dvb_frontend *fe,
248 enum fe_sec_mini_cmd burst)
249{
250 deb_fe("%s\n",__func__);
251 return 0;
252}
253
254static int vp702x_fe_set_tone(struct dvb_frontend *fe,
255 enum fe_sec_tone_mode tone)
256{
257 struct vp702x_fe_state *st = fe->demodulator_priv;
258 struct vp702x_device_state *dst = st->d->priv;
259 u8 *buf;
260
261 deb_fe("%s\n",__func__);
262
263 st->tone_mode = tone;
264
265 if (tone == SEC_TONE_ON)
266 st->lnb_buf[2] = 0x02;
267 else
268 st->lnb_buf[2] = 0x00;
269
270 st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7);
271
272 mutex_lock(&dst->buf_mutex);
273
274 buf = dst->buf;
275 memcpy(buf, st->lnb_buf, 8);
276
277 vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
278 if (buf[2] == 0 && buf[3] == 0)
279 deb_fe("set_tone cmd failed.\n");
280 else
281 deb_fe("set_tone cmd succeeded.\n");
282
283 mutex_unlock(&dst->buf_mutex);
284
285 return 0;
286}
287
288static int vp702x_fe_set_voltage(struct dvb_frontend *fe,
289 enum fe_sec_voltage voltage)
290{
291 struct vp702x_fe_state *st = fe->demodulator_priv;
292 struct vp702x_device_state *dst = st->d->priv;
293 u8 *buf;
294 deb_fe("%s\n",__func__);
295
296 st->voltage = voltage;
297
298 if (voltage != SEC_VOLTAGE_OFF)
299 st->lnb_buf[4] = 0x01;
300 else
301 st->lnb_buf[4] = 0x00;
302
303 st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7);
304
305 mutex_lock(&dst->buf_mutex);
306
307 buf = dst->buf;
308 memcpy(buf, st->lnb_buf, 8);
309
310 vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
311 if (buf[2] == 0 && buf[3] == 0)
312 deb_fe("set_voltage cmd failed.\n");
313 else
314 deb_fe("set_voltage cmd succeeded.\n");
315
316 mutex_unlock(&dst->buf_mutex);
317 return 0;
318}
319
320static void vp702x_fe_release(struct dvb_frontend* fe)
321{
322 struct vp702x_fe_state *st = fe->demodulator_priv;
323 kfree(st);
324}
325
326static const struct dvb_frontend_ops vp702x_fe_ops;
327
328struct dvb_frontend * vp702x_fe_attach(struct dvb_usb_device *d)
329{
330 struct vp702x_fe_state *s = kzalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
331 if (s == NULL)
332 goto error;
333
334 s->d = d;
335
336 memcpy(&s->fe.ops,&vp702x_fe_ops,sizeof(struct dvb_frontend_ops));
337 s->fe.demodulator_priv = s;
338
339 s->lnb_buf[1] = SET_LNB_POWER;
340 s->lnb_buf[3] = 0xff;
341
342 return &s->fe;
343error:
344 return NULL;
345}
346
347
348static const struct dvb_frontend_ops vp702x_fe_ops = {
349 .delsys = { SYS_DVBS },
350 .info = {
351 .name = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S",
352 .frequency_min = 950000,
353 .frequency_max = 2150000,
354 .frequency_stepsize = 1000,
355 .frequency_tolerance = 0,
356 .symbol_rate_min = 1000000,
357 .symbol_rate_max = 45000000,
358 .symbol_rate_tolerance = 500,
359 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
360 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
361 FE_CAN_QPSK |
362 FE_CAN_FEC_AUTO
363 },
364 .release = vp702x_fe_release,
365
366 .init = vp702x_fe_init,
367 .sleep = vp702x_fe_sleep,
368
369 .set_frontend = vp702x_fe_set_frontend,
370 .get_tune_settings = vp702x_fe_get_tune_settings,
371
372 .read_status = vp702x_fe_read_status,
373 .read_ber = vp702x_fe_read_ber,
374 .read_signal_strength = vp702x_fe_read_signal_strength,
375 .read_snr = vp702x_fe_read_snr,
376 .read_ucblocks = vp702x_fe_read_unc_blocks,
377
378 .diseqc_send_master_cmd = vp702x_fe_send_diseqc_msg,
379 .diseqc_send_burst = vp702x_fe_send_diseqc_burst,
380 .set_tone = vp702x_fe_set_tone,
381 .set_voltage = vp702x_fe_set_voltage,
382};
383
