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path: root/drivers/media/dvb/dvb-usb/vp702x-fe.c
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Diffstat (limited to 'drivers/media/dvb/dvb-usb/vp702x-fe.c')
-rw-r--r--drivers/media/dvb/dvb-usb/vp702x-fe.c339
1 files changed, 339 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/vp702x-fe.c b/drivers/media/dvb/dvb-usb/vp702x-fe.c
new file mode 100644
index 000000000000..f20d8dbd0be8
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/vp702x-fe.c
@@ -0,0 +1,339 @@
1/* DVB frontend part of the Linux driver for the TwinhanDTV StarBox USB2.0
2 * DVB-S receiver.
3 *
4 * Copyright (C) 2005 Ralph Metzler <rjkm@metzlerbros.de>
5 * Metzler Brothers Systementwicklung GbR
6 *
7 * Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de>
8 *
9 * Thanks to Twinhan who kindly provided hardware and information.
10 *
11 * This file can be removed soon, after the DST-driver is rewritten to provice
12 * the frontend-controlling separately.
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the Free
16 * Software Foundation, version 2.
17 *
18 * see Documentation/dvb/README.dvb-usb for more information
19 *
20 */
21#include "vp702x.h"
22
23struct vp702x_fe_state {
24 struct dvb_frontend fe;
25 struct dvb_usb_device *d;
26
27 fe_sec_voltage_t voltage;
28 fe_sec_tone_mode_t tone_mode;
29
30 u8 lnb_buf[8];
31
32 u8 lock;
33 u8 sig;
34 u8 snr;
35
36 unsigned long next_status_check;
37 unsigned long status_check_interval;
38};
39
40static int vp702x_fe_refresh_state(struct vp702x_fe_state *st)
41{
42 u8 buf[10];
43 if (time_after(jiffies,st->next_status_check)) {
44 vp702x_usb_in_op(st->d,READ_STATUS,0,0,buf,10);
45
46 st->lock = buf[4];
47 vp702x_usb_in_op(st->d,READ_TUNER_REG_REQ,0x11,0,&st->snr,1);
48 vp702x_usb_in_op(st->d,READ_TUNER_REG_REQ,0x15,0,&st->sig,1);
49
50 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
51 }
52 return 0;
53}
54
55static u8 vp702x_chksum(u8 *buf,int f, int count)
56{
57 u8 s = 0;
58 int i;
59 for (i = f; i < f+count; i++)
60 s += buf[i];
61 return ~s+1;
62}
63
64static int vp702x_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
65{
66 struct vp702x_fe_state *st = fe->demodulator_priv;
67 vp702x_fe_refresh_state(st);
68 deb_fe("%s\n",__FUNCTION__);
69
70 if (st->lock == 0)
71 *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
72 else
73 *status = 0;
74
75 deb_fe("real state: %x\n",*status);
76 *status = 0x1f;
77
78 if (*status & FE_HAS_LOCK)
79 st->status_check_interval = 1000;
80 else
81 st->status_check_interval = 250;
82 return 0;
83}
84
85/* not supported by this Frontend */
86static int vp702x_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
87{
88 struct vp702x_fe_state *st = fe->demodulator_priv;
89 vp702x_fe_refresh_state(st);
90 *ber = 0;
91 return 0;
92}
93
94/* not supported by this Frontend */
95static int vp702x_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
96{
97 struct vp702x_fe_state *st = fe->demodulator_priv;
98 vp702x_fe_refresh_state(st);
99 *unc = 0;
100 return 0;
101}
102
103static int vp702x_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
104{
105 struct vp702x_fe_state *st = fe->demodulator_priv;
106 vp702x_fe_refresh_state(st);
107
108 *strength = (st->sig << 8) | st->sig;
109 return 0;
110}
111
112static int vp702x_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
113{
114 u8 _snr;
115 struct vp702x_fe_state *st = fe->demodulator_priv;
116 vp702x_fe_refresh_state(st);
117
118 _snr = (st->snr & 0x1f) * 0xff / 0x1f;
119 *snr = (_snr << 8) | _snr;
120 return 0;
121}
122
123static int vp702x_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
124{
125 deb_fe("%s\n",__FUNCTION__);
126 tune->min_delay_ms = 2000;
127 return 0;
128}
129
130static int vp702x_fe_set_frontend(struct dvb_frontend* fe,
131 struct dvb_frontend_parameters *fep)
132{
133 struct vp702x_fe_state *st = fe->demodulator_priv;
134 u32 freq = fep->frequency/1000;
135 /*CalFrequency*/
136/* u16 frequencyRef[16] = { 2, 4, 8, 16, 32, 64, 128, 256, 24, 5, 10, 20, 40, 80, 160, 320 }; */
137 u64 sr;
138 u8 cmd[8] = { 0 },ibuf[10];
139
140 cmd[0] = (freq >> 8) & 0x7f;
141 cmd[1] = freq & 0xff;
142 cmd[2] = 1; /* divrate == 4 -> frequencyRef[1] -> 1 here */
143
144 sr = (u64) (fep->u.qpsk.symbol_rate/1000) << 20;
145 do_div(sr,88000);
146 cmd[3] = (sr >> 12) & 0xff;
147 cmd[4] = (sr >> 4) & 0xff;
148 cmd[5] = (sr << 4) & 0xf0;
149
150 deb_fe("setting frontend to: %u -> %u (%x) LNB-based GHz, symbolrate: %d -> %Lu (%Lx)\n",
151 fep->frequency,freq,freq, fep->u.qpsk.symbol_rate, sr, sr);
152
153/* if (fep->inversion == INVERSION_ON)
154 cmd[6] |= 0x80; */
155
156 if (st->voltage == SEC_VOLTAGE_18)
157 cmd[6] |= 0x40;
158
159/* if (fep->u.qpsk.symbol_rate > 8000000)
160 cmd[6] |= 0x20;
161
162 if (fep->frequency < 1531000)
163 cmd[6] |= 0x04;
164
165 if (st->tone_mode == SEC_TONE_ON)
166 cmd[6] |= 0x01;*/
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_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
174 msleep(30);
175 vp702x_usb_inout_op(st->d,cmd,8,ibuf,10,100);
176
177 if (ibuf[2] == 0 && ibuf[3] == 0)
178 deb_fe("tuning failed.\n");
179 else
180 deb_fe("tuning succeeded.\n");
181
182 return 0;
183}
184
185static int vp702x_fe_get_frontend(struct dvb_frontend* fe,
186 struct dvb_frontend_parameters *fep)
187{
188 deb_fe("%s\n",__FUNCTION__);
189 return 0;
190}
191
192static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
193 struct dvb_diseqc_master_cmd *m)
194{
195 struct vp702x_fe_state *st = fe->demodulator_priv;
196 u8 cmd[8],ibuf[10];
197 memset(cmd,0,8);
198
199 deb_fe("%s\n",__FUNCTION__);
200
201 if (m->msg_len > 4)
202 return -EINVAL;
203
204 cmd[1] = SET_DISEQC_CMD;
205 cmd[2] = m->msg_len;
206 memcpy(&cmd[3], m->msg, m->msg_len);
207 cmd[7] = vp702x_chksum(cmd,0,7);
208
209 vp702x_usb_inout_op(st->d,cmd,8,ibuf,10,100);
210
211 if (ibuf[2] == 0 && ibuf[3] == 0)
212 deb_fe("diseqc cmd failed.\n");
213 else
214 deb_fe("diseqc cmd succeeded.\n");
215
216 return 0;
217}
218
219static int vp702x_fe_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
220{
221 deb_fe("%s\n",__FUNCTION__);
222 return 0;
223}
224
225static int vp702x_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
226{
227 struct vp702x_fe_state *st = fe->demodulator_priv;
228 u8 ibuf[10];
229 deb_fe("%s\n",__FUNCTION__);
230
231 st->tone_mode = tone;
232
233 if (tone == SEC_TONE_ON)
234 st->lnb_buf[2] = 0x02;
235 else
236 st->lnb_buf[2] = 0x00;
237
238 st->lnb_buf[7] = vp702x_chksum(st->lnb_buf,0,7);
239
240 vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100);
241 if (ibuf[2] == 0 && ibuf[3] == 0)
242 deb_fe("set_tone cmd failed.\n");
243 else
244 deb_fe("set_tone cmd succeeded.\n");
245
246 return 0;
247}
248
249static int vp702x_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t
250 voltage)
251{
252 struct vp702x_fe_state *st = fe->demodulator_priv;
253 u8 ibuf[10];
254 deb_fe("%s\n",__FUNCTION__);
255
256 st->voltage = voltage;
257
258 if (voltage != SEC_VOLTAGE_OFF)
259 st->lnb_buf[4] = 0x01;
260 else
261 st->lnb_buf[4] = 0x00;
262
263 st->lnb_buf[7] = vp702x_chksum(st->lnb_buf,0,7);
264
265 vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100);
266 if (ibuf[2] == 0 && ibuf[3] == 0)
267 deb_fe("set_voltage cmd failed.\n");
268 else
269 deb_fe("set_voltage cmd succeeded.\n");
270
271 return 0;
272}
273
274static void vp702x_fe_release(struct dvb_frontend* fe)
275{
276 struct vp702x_fe_state *st = fe->demodulator_priv;
277 kfree(st);
278}
279
280static struct dvb_frontend_ops vp702x_fe_ops;
281
282struct dvb_frontend * vp702x_fe_attach(struct dvb_usb_device *d)
283{
284 struct vp702x_fe_state *s = kmalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
285 if (s == NULL)
286 goto error;
287 memset(s,0,sizeof(struct vp702x_fe_state));
288
289 s->d = d;
290 s->fe.ops = &vp702x_fe_ops;
291 s->fe.demodulator_priv = s;
292
293 s->lnb_buf[1] = SET_LNB_POWER;
294 s->lnb_buf[3] = 0xff; /* 0=tone burst, 2=data burst, ff=off */
295
296 goto success;
297error:
298 return NULL;
299success:
300 return &s->fe;
301}
302
303
304static struct dvb_frontend_ops vp702x_fe_ops = {
305 .info = {
306 .name = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S",
307 .type = FE_QPSK,
308 .frequency_min = 950000,
309 .frequency_max = 2150000,
310 .frequency_stepsize = 1000, /* kHz for QPSK frontends */
311 .frequency_tolerance = 0,
312 .symbol_rate_min = 1000000,
313 .symbol_rate_max = 45000000,
314 .symbol_rate_tolerance = 500, /* ppm */
315 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
316 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
317 FE_CAN_QPSK |
318 FE_CAN_FEC_AUTO
319 },
320 .release = vp702x_fe_release,
321
322 .init = NULL,
323 .sleep = NULL,
324
325 .set_frontend = vp702x_fe_set_frontend,
326 .get_frontend = vp702x_fe_get_frontend,
327 .get_tune_settings = vp702x_fe_get_tune_settings,
328
329 .read_status = vp702x_fe_read_status,
330 .read_ber = vp702x_fe_read_ber,
331 .read_signal_strength = vp702x_fe_read_signal_strength,
332 .read_snr = vp702x_fe_read_snr,
333 .read_ucblocks = vp702x_fe_read_unc_blocks,
334
335 .diseqc_send_master_cmd = vp702x_fe_send_diseqc_msg,
336 .diseqc_send_burst = vp702x_fe_send_diseqc_burst,
337 .set_tone = vp702x_fe_set_tone,
338 .set_voltage = vp702x_fe_set_voltage,
339};
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 05:26:30 -0500