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