2 * TerraTec Cinergy T2/qanu USB2 DVB-T adapter.
4 * Copyright (C) 2007 Tomi Orava (tomimo@ncircle.nullnet.fi)
6 * Based on the dvb-usb-framework code and the
7 * original Terratec Cinergy T2 driver by:
9 * Copyright (C) 2004 Daniel Mack <daniel@qanu.de> and
10 * Holger Waechtler <holger@qanu.de>
12 * Protocol Spec published on http://qanu.de/specs/terratec_cinergyT2.pdf
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #include "cinergyT2.h"
34 * convert linux-dvb frontend parameter set into TPS.
35 * See ETSI ETS-300744, section 4.6.2, table 9 for details.
37 * This function is probably reusable and may better get placed in a support
40 * We replace errornous fields by default TPS fields (the ones with value 0).
43 static uint16_t compute_tps(struct dtv_frontend_properties *op)
47 switch (op->code_rate_HP) {
63 /* tps |= (0 << 7) */;
66 switch (op->code_rate_LP) {
82 /* tps |= (0 << 4) */;
85 switch (op->modulation) {
94 /* tps |= (0 << 13) */;
97 switch (op->transmission_mode) {
98 case TRANSMISSION_MODE_8K:
101 case TRANSMISSION_MODE_2K:
103 /* tps |= (0 << 0) */;
106 switch (op->guard_interval) {
107 case GUARD_INTERVAL_1_16:
110 case GUARD_INTERVAL_1_8:
113 case GUARD_INTERVAL_1_4:
116 case GUARD_INTERVAL_1_32:
118 /* tps |= (0 << 2) */;
121 switch (op->hierarchy) {
133 /* tps |= (0 << 10) */;
139 struct cinergyt2_fe_state {
140 struct dvb_frontend fe;
141 struct dvb_usb_device *d;
144 static int cinergyt2_fe_read_status(struct dvb_frontend *fe,
145 enum fe_status *status)
147 struct cinergyt2_fe_state *state = fe->demodulator_priv;
148 struct dvbt_get_status_msg result;
149 u8 cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
152 ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (u8 *)&result,
159 if (0xffff - le16_to_cpu(result.gain) > 30)
160 *status |= FE_HAS_SIGNAL;
161 if (result.lock_bits & (1 << 6))
162 *status |= FE_HAS_LOCK;
163 if (result.lock_bits & (1 << 5))
164 *status |= FE_HAS_SYNC;
165 if (result.lock_bits & (1 << 4))
166 *status |= FE_HAS_CARRIER;
167 if (result.lock_bits & (1 << 1))
168 *status |= FE_HAS_VITERBI;
170 if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) !=
171 (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))
172 *status &= ~FE_HAS_LOCK;
177 static int cinergyt2_fe_read_ber(struct dvb_frontend *fe, u32 *ber)
179 struct cinergyt2_fe_state *state = fe->demodulator_priv;
180 struct dvbt_get_status_msg status;
181 char cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
184 ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (char *)&status,
189 *ber = le32_to_cpu(status.viterbi_error_rate);
193 static int cinergyt2_fe_read_unc_blocks(struct dvb_frontend *fe, u32 *unc)
195 struct cinergyt2_fe_state *state = fe->demodulator_priv;
196 struct dvbt_get_status_msg status;
197 u8 cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
200 ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (u8 *)&status,
203 err("cinergyt2_fe_read_unc_blocks() Failed! (Error=%d)\n",
207 *unc = le32_to_cpu(status.uncorrected_block_count);
211 static int cinergyt2_fe_read_signal_strength(struct dvb_frontend *fe,
214 struct cinergyt2_fe_state *state = fe->demodulator_priv;
215 struct dvbt_get_status_msg status;
216 char cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
219 ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (char *)&status,
222 err("cinergyt2_fe_read_signal_strength() Failed!"
223 " (Error=%d)\n", ret);
226 *strength = (0xffff - le16_to_cpu(status.gain));
230 static int cinergyt2_fe_read_snr(struct dvb_frontend *fe, u16 *snr)
232 struct cinergyt2_fe_state *state = fe->demodulator_priv;
233 struct dvbt_get_status_msg status;
234 char cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
237 ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (char *)&status,
240 err("cinergyt2_fe_read_snr() Failed! (Error=%d)\n", ret);
243 *snr = (status.snr << 8) | status.snr;
247 static int cinergyt2_fe_init(struct dvb_frontend *fe)
252 static int cinergyt2_fe_sleep(struct dvb_frontend *fe)
254 deb_info("cinergyt2_fe_sleep() Called\n");
258 static int cinergyt2_fe_get_tune_settings(struct dvb_frontend *fe,
259 struct dvb_frontend_tune_settings *tune)
261 tune->min_delay_ms = 800;
265 static int cinergyt2_fe_set_frontend(struct dvb_frontend *fe)
267 struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
268 struct cinergyt2_fe_state *state = fe->demodulator_priv;
269 struct dvbt_set_parameters_msg param;
273 param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
274 param.tps = cpu_to_le16(compute_tps(fep));
275 param.freq = cpu_to_le32(fep->frequency / 1000);
278 switch (fep->bandwidth_hz) {
291 err = dvb_usb_generic_rw(state->d,
292 (char *)¶m, sizeof(param),
293 result, sizeof(result), 0);
295 err("cinergyt2_fe_set_frontend() Failed! err=%d\n", err);
297 return (err < 0) ? err : 0;
300 static void cinergyt2_fe_release(struct dvb_frontend *fe)
302 struct cinergyt2_fe_state *state = fe->demodulator_priv;
306 static struct dvb_frontend_ops cinergyt2_fe_ops;
308 struct dvb_frontend *cinergyt2_fe_attach(struct dvb_usb_device *d)
310 struct cinergyt2_fe_state *s = kzalloc(sizeof(
311 struct cinergyt2_fe_state), GFP_KERNEL);
316 memcpy(&s->fe.ops, &cinergyt2_fe_ops, sizeof(struct dvb_frontend_ops));
317 s->fe.demodulator_priv = s;
322 static struct dvb_frontend_ops cinergyt2_fe_ops = {
323 .delsys = { SYS_DVBT },
326 .frequency_min = 174000000,
327 .frequency_max = 862000000,
328 .frequency_stepsize = 166667,
329 .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_1_2
330 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4
331 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8
332 | FE_CAN_FEC_AUTO | FE_CAN_QPSK
333 | FE_CAN_QAM_16 | FE_CAN_QAM_64
335 | FE_CAN_TRANSMISSION_MODE_AUTO
336 | FE_CAN_GUARD_INTERVAL_AUTO
337 | FE_CAN_HIERARCHY_AUTO
342 .release = cinergyt2_fe_release,
344 .init = cinergyt2_fe_init,
345 .sleep = cinergyt2_fe_sleep,
347 .set_frontend = cinergyt2_fe_set_frontend,
348 .get_tune_settings = cinergyt2_fe_get_tune_settings,
350 .read_status = cinergyt2_fe_read_status,
351 .read_ber = cinergyt2_fe_read_ber,
352 .read_signal_strength = cinergyt2_fe_read_signal_strength,
353 .read_snr = cinergyt2_fe_read_snr,
354 .read_ucblocks = cinergyt2_fe_read_unc_blocks,