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path: root/drivers/media/dvb/dvb-usb/gp8psk-fe.c
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Diffstat (limited to 'drivers/media/dvb/dvb-usb/gp8psk-fe.c')
-rw-r--r--drivers/media/dvb/dvb-usb/gp8psk-fe.c378
1 files changed, 378 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/gp8psk-fe.c b/drivers/media/dvb/dvb-usb/gp8psk-fe.c
new file mode 100644
index 00000000000..60d11e57e7d
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/gp8psk-fe.c
@@ -0,0 +1,378 @@
1/* DVB USB compliant Linux driver for the
2 * - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
3 *
4 * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
5 * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
6 *
7 * Thanks to GENPIX for the sample code used to implement this module.
8 *
9 * This module is based off the vp7045 and vp702x modules
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation, version 2.
14 *
15 * see Documentation/dvb/README.dvb-usb for more information
16 */
17#include "gp8psk.h"
18
19struct gp8psk_fe_state {
20 struct dvb_frontend fe;
21 struct dvb_usb_device *d;
22 u8 lock;
23 u16 snr;
24 unsigned long next_status_check;
25 unsigned long status_check_interval;
26};
27
28static int gp8psk_tuned_to_DCII(struct dvb_frontend *fe)
29{
30 struct gp8psk_fe_state *st = fe->demodulator_priv;
31 u8 status;
32 gp8psk_usb_in_op(st->d, GET_8PSK_CONFIG, 0, 0, &status, 1);
33 return status & bmDCtuned;
34}
35
36static int gp8psk_set_tuner_mode(struct dvb_frontend *fe, int mode)
37{
38 struct gp8psk_fe_state *state = fe->demodulator_priv;
39 return gp8psk_usb_out_op(state->d, SET_8PSK_CONFIG, mode, 0, NULL, 0);
40}
41
42static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
43{
44 u8 buf[6];
45 if (time_after(jiffies,st->next_status_check)) {
46 gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0,0,&st->lock,1);
47 gp8psk_usb_in_op(st->d, GET_SIGNAL_STRENGTH, 0,0,buf,6);
48 st->snr = (buf[1]) << 8 | buf[0];
49 st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
50 }
51 return 0;
52}
53
54static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
55{
56 struct gp8psk_fe_state *st = fe->demodulator_priv;
57 gp8psk_fe_update_status(st);
58
59 if (st->lock)
60 *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
61 else
62 *status = 0;
63
64 if (*status & FE_HAS_LOCK)
65 st->status_check_interval = 1000;
66 else
67 st->status_check_interval = 100;
68 return 0;
69}
70
71/* not supported by this Frontend */
72static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
73{
74 (void) fe;
75 *ber = 0;
76 return 0;
77}
78
79/* not supported by this Frontend */
80static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
81{
82 (void) fe;
83 *unc = 0;
84 return 0;
85}
86
87static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
88{
89 struct gp8psk_fe_state *st = fe->demodulator_priv;
90 gp8psk_fe_update_status(st);
91 /* snr is reported in dBu*256 */
92 *snr = st->snr;
93 return 0;
94}
95
96static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
97{
98 struct gp8psk_fe_state *st = fe->demodulator_priv;
99 gp8psk_fe_update_status(st);
100 /* snr is reported in dBu*256 */
101 /* snr / 38.4 ~= 100% strength */
102 /* snr * 17 returns 100% strength as 65535 */
103 if (st->snr > 0xf00)
104 *strength = 0xffff;
105 else
106 *strength = (st->snr << 4) + st->snr; /* snr*17 */
107 return 0;
108}
109
110static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
111{
112 tune->min_delay_ms = 800;
113 return 0;
114}
115
116static int gp8psk_fe_set_property(struct dvb_frontend *fe,
117 struct dtv_property *tvp)
118{
119 deb_fe("%s(..)\n", __func__);
120 return 0;
121}
122
123static int gp8psk_fe_get_property(struct dvb_frontend *fe,
124 struct dtv_property *tvp)
125{
126 deb_fe("%s(..)\n", __func__);
127 return 0;
128}
129
130
131static int gp8psk_fe_set_frontend(struct dvb_frontend* fe,
132 struct dvb_frontend_parameters *fep)
133{
134 struct gp8psk_fe_state *state = fe->demodulator_priv;
135 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
136 u8 cmd[10];
137 u32 freq = fep->frequency * 1000;
138 int gp_product_id = le16_to_cpu(state->d->udev->descriptor.idProduct);
139
140 deb_fe("%s()\n", __func__);
141
142 cmd[4] = freq & 0xff;
143 cmd[5] = (freq >> 8) & 0xff;
144 cmd[6] = (freq >> 16) & 0xff;
145 cmd[7] = (freq >> 24) & 0xff;
146
147 switch (c->delivery_system) {
148 case SYS_DVBS:
149 /* Allow QPSK and 8PSK (even for DVB-S) */
150 if (c->modulation != QPSK && c->modulation != PSK_8) {
151 deb_fe("%s: unsupported modulation selected (%d)\n",
152 __func__, c->modulation);
153 return -EOPNOTSUPP;
154 }
155 c->fec_inner = FEC_AUTO;
156 break;
157 case SYS_DVBS2:
158 deb_fe("%s: DVB-S2 delivery system selected\n", __func__);
159 break;
160
161 default:
162 deb_fe("%s: unsupported delivery system selected (%d)\n",
163 __func__, c->delivery_system);
164 return -EOPNOTSUPP;
165 }
166
167 cmd[0] = c->symbol_rate & 0xff;
168 cmd[1] = (c->symbol_rate >> 8) & 0xff;
169 cmd[2] = (c->symbol_rate >> 16) & 0xff;
170 cmd[3] = (c->symbol_rate >> 24) & 0xff;
171 switch (c->modulation) {
172 case QPSK:
173 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
174 if (gp8psk_tuned_to_DCII(fe))
175 gp8psk_bcm4500_reload(state->d);
176 switch (c->fec_inner) {
177 case FEC_1_2:
178 cmd[9] = 0; break;
179 case FEC_2_3:
180 cmd[9] = 1; break;
181 case FEC_3_4:
182 cmd[9] = 2; break;
183 case FEC_5_6:
184 cmd[9] = 3; break;
185 case FEC_7_8:
186 cmd[9] = 4; break;
187 case FEC_AUTO:
188 cmd[9] = 5; break;
189 default:
190 cmd[9] = 5; break;
191 }
192 cmd[8] = ADV_MOD_DVB_QPSK;
193 break;
194 case PSK_8: /* PSK_8 is for compatibility with DN */
195 cmd[8] = ADV_MOD_TURBO_8PSK;
196 switch (c->fec_inner) {
197 case FEC_2_3:
198 cmd[9] = 0; break;
199 case FEC_3_4:
200 cmd[9] = 1; break;
201 case FEC_3_5:
202 cmd[9] = 2; break;
203 case FEC_5_6:
204 cmd[9] = 3; break;
205 case FEC_8_9:
206 cmd[9] = 4; break;
207 default:
208 cmd[9] = 0; break;
209 }
210 break;
211 case QAM_16: /* QAM_16 is for compatibility with DN */
212 cmd[8] = ADV_MOD_TURBO_16QAM;
213 cmd[9] = 0;
214 break;
215 default: /* Unknown modulation */
216 deb_fe("%s: unsupported modulation selected (%d)\n",
217 __func__, c->modulation);
218 return -EOPNOTSUPP;
219 }
220
221 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
222 gp8psk_set_tuner_mode(fe, 0);
223 gp8psk_usb_out_op(state->d, TUNE_8PSK, 0, 0, cmd, 10);
224
225 state->lock = 0;
226 state->next_status_check = jiffies;
227 state->status_check_interval = 200;
228
229 return 0;
230}
231
232static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
233 struct dvb_diseqc_master_cmd *m)
234{
235 struct gp8psk_fe_state *st = fe->demodulator_priv;
236
237 deb_fe("%s\n",__func__);
238
239 if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, m->msg[0], 0,
240 m->msg, m->msg_len)) {
241 return -EINVAL;
242 }
243 return 0;
244}
245
246static int gp8psk_fe_send_diseqc_burst (struct dvb_frontend* fe,
247 fe_sec_mini_cmd_t burst)
248{
249 struct gp8psk_fe_state *st = fe->demodulator_priv;
250 u8 cmd;
251
252 deb_fe("%s\n",__func__);
253
254 /* These commands are certainly wrong */
255 cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;
256
257 if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0,
258 &cmd, 0)) {
259 return -EINVAL;
260 }
261 return 0;
262}
263
264static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
265{
266 struct gp8psk_fe_state* state = fe->demodulator_priv;
267
268 if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE,
269 (tone == SEC_TONE_ON), 0, NULL, 0)) {
270 return -EINVAL;
271 }
272 return 0;
273}
274
275static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
276{
277 struct gp8psk_fe_state* state = fe->demodulator_priv;
278
279 if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE,
280 voltage == SEC_VOLTAGE_18, 0, NULL, 0)) {
281 return -EINVAL;
282 }
283 return 0;
284}
285
286static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff)
287{
288 struct gp8psk_fe_state* state = fe->demodulator_priv;
289 return gp8psk_usb_out_op(state->d, USE_EXTRA_VOLT, onoff, 0,NULL,0);
290}
291
292static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd)
293{
294 struct gp8psk_fe_state* state = fe->demodulator_priv;
295 u8 cmd = sw_cmd & 0x7f;
296
297 if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0,
298 NULL, 0)) {
299 return -EINVAL;
300 }
301 if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, !!(sw_cmd & 0x80),
302 0, NULL, 0)) {
303 return -EINVAL;
304 }
305
306 return 0;
307}
308
309static void gp8psk_fe_release(struct dvb_frontend* fe)
310{
311 struct gp8psk_fe_state *state = fe->demodulator_priv;
312 kfree(state);
313}
314
315static struct dvb_frontend_ops gp8psk_fe_ops;
316
317struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d)
318{
319 struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);
320 if (s == NULL)
321 goto error;
322
323 s->d = d;
324 memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));
325 s->fe.demodulator_priv = s;
326
327 goto success;
328error:
329 return NULL;
330success:
331 return &s->fe;
332}
333
334
335static struct dvb_frontend_ops gp8psk_fe_ops = {
336 .info = {
337 .name = "Genpix DVB-S",
338 .type = FE_QPSK,
339 .frequency_min = 800000,
340 .frequency_max = 2250000,
341 .frequency_stepsize = 100,
342 .symbol_rate_min = 1000000,
343 .symbol_rate_max = 45000000,
344 .symbol_rate_tolerance = 500, /* ppm */
345 .caps = FE_CAN_INVERSION_AUTO |
346 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
347 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
348 /*
349 * FE_CAN_QAM_16 is for compatibility
350 * (Myth incorrectly detects Turbo-QPSK as plain QAM-16)
351 */
352 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_TURBO_FEC
353 },
354
355 .release = gp8psk_fe_release,
356
357 .init = NULL,
358 .sleep = NULL,
359
360 .set_property = gp8psk_fe_set_property,
361 .get_property = gp8psk_fe_get_property,
362 .set_frontend = gp8psk_fe_set_frontend,
363
364 .get_tune_settings = gp8psk_fe_get_tune_settings,
365
366 .read_status = gp8psk_fe_read_status,
367 .read_ber = gp8psk_fe_read_ber,
368 .read_signal_strength = gp8psk_fe_read_signal_strength,
369 .read_snr = gp8psk_fe_read_snr,
370 .read_ucblocks = gp8psk_fe_read_unc_blocks,
371
372 .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg,
373 .diseqc_send_burst = gp8psk_fe_send_diseqc_burst,
374 .set_tone = gp8psk_fe_set_tone,
375 .set_voltage = gp8psk_fe_set_voltage,
376 .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd,
377 .enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage
378};
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-20 13:02:06 -0400