1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * TerraTec Cinergy T2/qanu USB2 DVB-T adapter.
7  * Based on the dvb-usb-framework code and the
20  *  convert linux-dvb frontend parameter set into TPS.
21  *  See ETSI ETS-300744, section 4.6.2, table 9 for details.
26  *  We replace erroneous fields by default TPS fields (the ones with value 0).
33 	switch (op->code_rate_HP) {  in compute_tps()
48 	default:  in compute_tps()
52 	switch (op->code_rate_LP) {  in compute_tps()
67 	default:  in compute_tps()
71 	switch (op->modulation) {  in compute_tps()
79 	default:  in compute_tps()
83 	switch (op->transmission_mode) {  in compute_tps()
88 	default:  in compute_tps()
92 	switch (op->guard_interval) {  in compute_tps()
103 	default:  in compute_tps()
107 	switch (op->hierarchy) {  in compute_tps()
118 	default:  in compute_tps()
138 	struct cinergyt2_fe_state *state = fe->demodulator_priv;  in cinergyt2_fe_read_status()  local
141 	mutex_lock(&state->data_mutex);  in cinergyt2_fe_read_status()
142 	state->data[0] = CINERGYT2_EP1_GET_TUNER_STATUS;  in cinergyt2_fe_read_status()
144 	ret = dvb_usb_generic_rw(state->d, state->data, 1,  in cinergyt2_fe_read_status()
145 				 state->data, sizeof(state->status), 0);  in cinergyt2_fe_read_status()
147 		memcpy(&state->status, state->data, sizeof(state->status));  in cinergyt2_fe_read_status()
148 	mutex_unlock(&state->data_mutex);  in cinergyt2_fe_read_status()
155 	if (0xffff - le16_to_cpu(state->status.gain) > 30)  in cinergyt2_fe_read_status()
157 	if (state->status.lock_bits & (1 << 6))  in cinergyt2_fe_read_status()
159 	if (state->status.lock_bits & (1 << 5))  in cinergyt2_fe_read_status()
161 	if (state->status.lock_bits & (1 << 4))  in cinergyt2_fe_read_status()
163 	if (state->status.lock_bits & (1 << 1))  in cinergyt2_fe_read_status()
175 	struct cinergyt2_fe_state *state = fe->demodulator_priv;  in cinergyt2_fe_read_ber()  local
177 	*ber = le32_to_cpu(state->status.viterbi_error_rate);  in cinergyt2_fe_read_ber()
183 	struct cinergyt2_fe_state *state = fe->demodulator_priv;  in cinergyt2_fe_read_unc_blocks()  local
185 	*unc = le32_to_cpu(state->status.uncorrected_block_count);  in cinergyt2_fe_read_unc_blocks()
192 	struct cinergyt2_fe_state *state = fe->demodulator_priv;  in cinergyt2_fe_read_signal_strength()  local
194 	*strength = (0xffff - le16_to_cpu(state->status.gain));  in cinergyt2_fe_read_signal_strength()
200 	struct cinergyt2_fe_state *state = fe->demodulator_priv;  in cinergyt2_fe_read_snr()  local
202 	*snr = (state->status.snr << 8) | state->status.snr;  in cinergyt2_fe_read_snr()
220 	tune->min_delay_ms = 800;  in cinergyt2_fe_get_tune_settings()
226 	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;  in cinergyt2_fe_set_frontend()
227 	struct cinergyt2_fe_state *state = fe->demodulator_priv;  in cinergyt2_fe_set_frontend()  local
231 	mutex_lock(&state->data_mutex);  in cinergyt2_fe_set_frontend()
233 	param = (void *)state->data;  in cinergyt2_fe_set_frontend()
234 	param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;  in cinergyt2_fe_set_frontend()
235 	param->tps = cpu_to_le16(compute_tps(fep));  in cinergyt2_fe_set_frontend()
236 	param->freq = cpu_to_le32(fep->frequency / 1000);  in cinergyt2_fe_set_frontend()
237 	param->flags = 0;  in cinergyt2_fe_set_frontend()
239 	switch (fep->bandwidth_hz) {  in cinergyt2_fe_set_frontend()
240 	default:  in cinergyt2_fe_set_frontend()
242 		param->bandwidth = 8;  in cinergyt2_fe_set_frontend()
245 		param->bandwidth = 7;  in cinergyt2_fe_set_frontend()
248 		param->bandwidth = 6;  in cinergyt2_fe_set_frontend()
252 	err = dvb_usb_generic_rw(state->d, state->data, sizeof(*param),  in cinergyt2_fe_set_frontend()
253 				 state->data, 2, 0);  in cinergyt2_fe_set_frontend()
257 	mutex_unlock(&state->data_mutex);  in cinergyt2_fe_set_frontend()
263 	struct cinergyt2_fe_state *state = fe->demodulator_priv;  in cinergyt2_fe_release()  local
264 	kfree(state);  in cinergyt2_fe_release()
276 	s->d = d;  in cinergyt2_fe_attach()
277 	memcpy(&s->fe.ops, &cinergyt2_fe_ops, sizeof(struct dvb_frontend_ops));  in cinergyt2_fe_attach()
278 	s->fe.demodulator_priv = s;  in cinergyt2_fe_attach()
279 	mutex_init(&s->data_mutex);  in cinergyt2_fe_attach()
280 	return &s->fe;  in cinergyt2_fe_attach()