1 /* DVB USB compliant Linux driver for the
2 * - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
4 * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
5 * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
7 * Thanks to GENPIX for the sample code used to implement this module.
9 * This module is based off the vp7045 and vp702x modules
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.
15 * see Documentation/dvb/README.dvb-usb for more information
19 struct gp8psk_fe_state {
20 struct dvb_frontend fe;
21 struct dvb_usb_device *d;
24 unsigned long next_status_check;
25 unsigned long status_check_interval;
28 static int gp8psk_tuned_to_DCII(struct dvb_frontend *fe)
30 struct gp8psk_fe_state *st = fe->demodulator_priv;
32 gp8psk_usb_in_op(st->d, GET_8PSK_CONFIG, 0, 0, &status, 1);
33 return status & bmDCtuned;
36 static int gp8psk_set_tuner_mode(struct dvb_frontend *fe, int mode)
38 struct gp8psk_fe_state *state = fe->demodulator_priv;
39 return gp8psk_usb_out_op(state->d, SET_8PSK_CONFIG, mode, 0, NULL, 0);
42 static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
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;
54 static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
56 struct gp8psk_fe_state *st = fe->demodulator_priv;
57 gp8psk_fe_update_status(st);
60 *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
64 if (*status & FE_HAS_LOCK)
65 st->status_check_interval = 1000;
67 st->status_check_interval = 100;
71 /* not supported by this Frontend */
72 static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
79 /* not supported by this Frontend */
80 static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
87 static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
89 struct gp8psk_fe_state *st = fe->demodulator_priv;
90 gp8psk_fe_update_status(st);
91 /* snr is reported in dBu*256 */
96 static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
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 */
106 *strength = (st->snr << 4) + st->snr; /* snr*17 */
110 static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
112 tune->min_delay_ms = 800;
116 static int gp8psk_fe_set_frontend(struct dvb_frontend *fe)
118 struct gp8psk_fe_state *state = fe->demodulator_priv;
119 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
121 u32 freq = c->frequency * 1000;
122 int gp_product_id = le16_to_cpu(state->d->udev->descriptor.idProduct);
124 deb_fe("%s()\n", __func__);
126 cmd[4] = freq & 0xff;
127 cmd[5] = (freq >> 8) & 0xff;
128 cmd[6] = (freq >> 16) & 0xff;
129 cmd[7] = (freq >> 24) & 0xff;
131 /* backwards compatibility: DVB-S + 8-PSK were used for Turbo-FEC */
132 if (c->delivery_system == SYS_DVBS && c->modulation == PSK_8)
133 c->delivery_system = SYS_TURBO;
135 switch (c->delivery_system) {
137 if (c->modulation != QPSK) {
138 deb_fe("%s: unsupported modulation selected (%d)\n",
139 __func__, c->modulation);
142 c->fec_inner = FEC_AUTO;
144 case SYS_DVBS2: /* kept for backwards compatibility */
145 deb_fe("%s: DVB-S2 delivery system selected\n", __func__);
148 deb_fe("%s: Turbo-FEC delivery system selected\n", __func__);
152 deb_fe("%s: unsupported delivery system selected (%d)\n",
153 __func__, c->delivery_system);
157 cmd[0] = c->symbol_rate & 0xff;
158 cmd[1] = (c->symbol_rate >> 8) & 0xff;
159 cmd[2] = (c->symbol_rate >> 16) & 0xff;
160 cmd[3] = (c->symbol_rate >> 24) & 0xff;
161 switch (c->modulation) {
163 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
164 if (gp8psk_tuned_to_DCII(fe))
165 gp8psk_bcm4500_reload(state->d);
166 switch (c->fec_inner) {
182 if (c->delivery_system == SYS_TURBO)
183 cmd[8] = ADV_MOD_TURBO_QPSK;
185 cmd[8] = ADV_MOD_DVB_QPSK;
187 case PSK_8: /* PSK_8 is for compatibility with DN */
188 cmd[8] = ADV_MOD_TURBO_8PSK;
189 switch (c->fec_inner) {
204 case QAM_16: /* QAM_16 is for compatibility with DN */
205 cmd[8] = ADV_MOD_TURBO_16QAM;
208 default: /* Unknown modulation */
209 deb_fe("%s: unsupported modulation selected (%d)\n",
210 __func__, c->modulation);
214 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
215 gp8psk_set_tuner_mode(fe, 0);
216 gp8psk_usb_out_op(state->d, TUNE_8PSK, 0, 0, cmd, 10);
219 state->next_status_check = jiffies;
220 state->status_check_interval = 200;
225 static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
226 struct dvb_diseqc_master_cmd *m)
228 struct gp8psk_fe_state *st = fe->demodulator_priv;
230 deb_fe("%s\n",__func__);
232 if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, m->msg[0], 0,
233 m->msg, m->msg_len)) {
239 static int gp8psk_fe_send_diseqc_burst (struct dvb_frontend* fe,
240 fe_sec_mini_cmd_t burst)
242 struct gp8psk_fe_state *st = fe->demodulator_priv;
245 deb_fe("%s\n",__func__);
247 /* These commands are certainly wrong */
248 cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;
250 if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0,
257 static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
259 struct gp8psk_fe_state* state = fe->demodulator_priv;
261 if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE,
262 (tone == SEC_TONE_ON), 0, NULL, 0)) {
268 static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
270 struct gp8psk_fe_state* state = fe->demodulator_priv;
272 if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE,
273 voltage == SEC_VOLTAGE_18, 0, NULL, 0)) {
279 static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff)
281 struct gp8psk_fe_state* state = fe->demodulator_priv;
282 return gp8psk_usb_out_op(state->d, USE_EXTRA_VOLT, onoff, 0,NULL,0);
285 static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd)
287 struct gp8psk_fe_state* state = fe->demodulator_priv;
288 u8 cmd = sw_cmd & 0x7f;
290 if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0,
294 if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, !!(sw_cmd & 0x80),
302 static void gp8psk_fe_release(struct dvb_frontend* fe)
304 struct gp8psk_fe_state *state = fe->demodulator_priv;
308 static struct dvb_frontend_ops gp8psk_fe_ops;
310 struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d)
312 struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);
317 memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));
318 s->fe.demodulator_priv = s;
328 static struct dvb_frontend_ops gp8psk_fe_ops = {
329 .delsys = { SYS_DVBS },
331 .name = "Genpix DVB-S",
332 .frequency_min = 800000,
333 .frequency_max = 2250000,
334 .frequency_stepsize = 100,
335 .symbol_rate_min = 1000000,
336 .symbol_rate_max = 45000000,
337 .symbol_rate_tolerance = 500, /* ppm */
338 .caps = FE_CAN_INVERSION_AUTO |
339 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
340 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
342 * FE_CAN_QAM_16 is for compatibility
343 * (Myth incorrectly detects Turbo-QPSK as plain QAM-16)
345 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_TURBO_FEC
348 .release = gp8psk_fe_release,
353 .set_frontend = gp8psk_fe_set_frontend,
355 .get_tune_settings = gp8psk_fe_get_tune_settings,
357 .read_status = gp8psk_fe_read_status,
358 .read_ber = gp8psk_fe_read_ber,
359 .read_signal_strength = gp8psk_fe_read_signal_strength,
360 .read_snr = gp8psk_fe_read_snr,
361 .read_ucblocks = gp8psk_fe_read_unc_blocks,
363 .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg,
364 .diseqc_send_burst = gp8psk_fe_send_diseqc_burst,
365 .set_tone = gp8psk_fe_set_tone,
366 .set_voltage = gp8psk_fe_set_voltage,
367 .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd,
368 .enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage