1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *   Conexant cx24123/cx24109 - DVB QPSK Satellite demod/tuner driver
7  *   Support for KWorld DVB-S 100 by Vadim Catana <skystar@moldova.cc>
9  *   Support for CX24123/CX24113-NIM by Patrick Boettcher <pb@linuxtv.org>
26 	"(1-9, default:off).");
30 MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
191 	{0x03, 0x07}, /* QPSK, DVB, Auto Acquisition (default) */
194 	{0x06, 0x31}, /* MPEG (default) */
195 	{0x0b, 0x00}, /* Freq search start point (default) */
196 	{0x0c, 0x00}, /* Demodulator sample gain (default) */
197 	{0x0d, 0x7f}, /* Force driver to shift until the maximum (+-10 MHz) */
198 	{0x0e, 0x03}, /* Default non-inverted, FEC 3/4 (default) */
200 	{0x10, 0x01}, /* Default search inversion, no repeat (default) */
208 	{0x2a, 0xb0}, /* DiSEqC Parameters (default) */
209 	{0x2b, 0x73}, /* DiSEqC Tone Frequency (default) */
210 	{0x2c, 0x00}, /* DiSEqC Message (0x2c - 0x31) */
216 	{0x32, 0x8c}, /* DiSEqC Parameters (default) */
217 	{0x33, 0x00}, /* Interrupts off (0x33 - 0x34) */
219 	{0x35, 0x03}, /* DiSEqC Tone Amplitude (default) */
220 	{0x36, 0x02}, /* DiSEqC Parameters (default) */
221 	{0x37, 0x3a}, /* DiSEqC Parameters (default) */
223 	{0x44, 0x00}, /* Constellation (default) */
224 	{0x45, 0x00}, /* Symbol count (default) */
225 	{0x46, 0x0d}, /* Symbol rate estimator on (default) */
227 	{0x57, 0xff}, /* Error Counter Window (default) */
228 	{0x5c, 0x20}, /* Acquisition AFC Expiration window (default is 0x10) */
229 	{0x67, 0x83}, /* Non-DCII symbol clock */
232 static int cx24123_i2c_writereg(struct cx24123_state *state,  in cx24123_i2c_writereg()  argument
243 	err = i2c_transfer(state->i2c, &msg, 1);  in cx24123_i2c_writereg()
253 static int cx24123_i2c_readreg(struct cx24123_state *state, u8 i2c_addr, u8 reg)  in cx24123_i2c_readreg()  argument
262 	ret = i2c_transfer(state->i2c, msg, 2);  in cx24123_i2c_readreg()
274 #define cx24123_readreg(state, reg) \  argument
275 	cx24123_i2c_readreg(state, state->config->demod_address, reg)
276 #define cx24123_writereg(state, reg, val) \  argument
277 	cx24123_i2c_writereg(state, state->config->demod_address, reg, val)
279 static int cx24123_set_inversion(struct cx24123_state *state,  in cx24123_set_inversion()  argument
282 	u8 nom_reg = cx24123_readreg(state, 0x0e);  in cx24123_set_inversion()
283 	u8 auto_reg = cx24123_readreg(state, 0x10);  in cx24123_set_inversion()
288 		cx24123_writereg(state, 0x0e, nom_reg & ~0x80);  in cx24123_set_inversion()
289 		cx24123_writereg(state, 0x10, auto_reg | 0x80);  in cx24123_set_inversion()
293 		cx24123_writereg(state, 0x0e, nom_reg | 0x80);  in cx24123_set_inversion()
294 		cx24123_writereg(state, 0x10, auto_reg | 0x80);  in cx24123_set_inversion()
298 		cx24123_writereg(state, 0x10, auto_reg & ~0x80);  in cx24123_set_inversion()
300 	default:  in cx24123_set_inversion()
301 		return -EINVAL;  in cx24123_set_inversion()
307 static int cx24123_get_inversion(struct cx24123_state *state,  in cx24123_get_inversion()  argument
312 	val = cx24123_readreg(state, 0x1b) >> 7;  in cx24123_get_inversion()
325 static int cx24123_set_fec(struct cx24123_state *state, enum fe_code_rate fec)  in cx24123_set_fec()  argument
327 	u8 nom_reg = cx24123_readreg(state, 0x0e) & ~0x07;  in cx24123_set_fec()
334 		cx24123_writereg(state, 0x43,  in cx24123_set_fec()
335 			cx24123_readreg(state, 0x43) | 0x01);  in cx24123_set_fec()
337 		cx24123_writereg(state, 0x43,  in cx24123_set_fec()
338 			cx24123_readreg(state, 0x43) & ~0x01);  in cx24123_set_fec()
343 		cx24123_writereg(state, 0x0e, nom_reg | 0x01);  in cx24123_set_fec()
344 		cx24123_writereg(state, 0x0f, 0x02);  in cx24123_set_fec()
348 		cx24123_writereg(state, 0x0e, nom_reg | 0x02);  in cx24123_set_fec()
349 		cx24123_writereg(state, 0x0f, 0x04);  in cx24123_set_fec()
353 		cx24123_writereg(state, 0x0e, nom_reg | 0x03);  in cx24123_set_fec()
354 		cx24123_writereg(state, 0x0f, 0x08);  in cx24123_set_fec()
358 		cx24123_writereg(state, 0x0e, nom_reg | 0x04);  in cx24123_set_fec()
359 		cx24123_writereg(state, 0x0f, 0x10);  in cx24123_set_fec()
363 		cx24123_writereg(state, 0x0e, nom_reg | 0x05);  in cx24123_set_fec()
364 		cx24123_writereg(state, 0x0f, 0x20);  in cx24123_set_fec()
368 		cx24123_writereg(state, 0x0e, nom_reg | 0x06);  in cx24123_set_fec()
369 		cx24123_writereg(state, 0x0f, 0x40);  in cx24123_set_fec()
373 		cx24123_writereg(state, 0x0e, nom_reg | 0x07);  in cx24123_set_fec()
374 		cx24123_writereg(state, 0x0f, 0x80);  in cx24123_set_fec()
378 		cx24123_writereg(state, 0x0f, 0xfe);  in cx24123_set_fec()
380 	default:  in cx24123_set_fec()
381 		return -EOPNOTSUPP;  in cx24123_set_fec()
387 static int cx24123_get_fec(struct cx24123_state *state, enum fe_code_rate *fec)  in cx24123_get_fec()  argument
391 	ret = cx24123_readreg(state, 0x1b);  in cx24123_get_fec()
418 	default:  in cx24123_get_fec()
441 static int cx24123_set_symbolrate(struct cx24123_state *state, u32 srate)  in cx24123_set_symbolrate()  argument
448 	if ((srate > state->frontend.ops.info.symbol_rate_max) ||  in cx24123_set_symbolrate()
449 	    (srate < state->frontend.ops.info.symbol_rate_min))  in cx24123_set_symbolrate()
450 		return -EOPNOTSUPP;  in cx24123_set_symbolrate()
480 	cx24123_writereg(state, 0x01, pll_mult * 6);  in cx24123_set_symbolrate()
482 	cx24123_writereg(state, 0x08, (ratio >> 16) & 0x3f);  in cx24123_set_symbolrate()
483 	cx24123_writereg(state, 0x09, (ratio >> 8) & 0xff);  in cx24123_set_symbolrate()
484 	cx24123_writereg(state, 0x0a, ratio & 0xff);  in cx24123_set_symbolrate()
488 	tmp = cx24123_readreg(state, 0x0c) & ~0xe0;  in cx24123_set_symbolrate()
489 	cx24123_writereg(state, 0x0c, tmp | sample_gain << 5);  in cx24123_set_symbolrate()
504 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;  in cx24123_pll_calculate()
505 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_pll_calculate()  local
515 	state->VCAarg = cx24123_AGC_vals[0].VCAprogdata;  in cx24123_pll_calculate()
516 	state->VGAarg = cx24123_AGC_vals[0].VGAprogdata;  in cx24123_pll_calculate()
517 	state->bandselectarg = cx24123_bandselect_vals[0].progdata;  in cx24123_pll_calculate()
524 		if ((agcv->symbolrate_low <= p->symbol_rate) &&  in cx24123_pll_calculate()
525 		    (agcv->symbolrate_high >= p->symbol_rate)) {  in cx24123_pll_calculate()
526 			state->VCAarg = agcv->VCAprogdata;  in cx24123_pll_calculate()
527 			state->VGAarg = agcv->VGAprogdata;  in cx24123_pll_calculate()
528 			state->FILTune = agcv->FILTune;  in cx24123_pll_calculate()
536 			if ((bsv->freq_low <= p->frequency) &&  in cx24123_pll_calculate()
537 				(bsv->freq_high >= p->frequency))  in cx24123_pll_calculate()
541 		band = force_band - 1;  in cx24123_pll_calculate()
543 	state->bandselectarg = cx24123_bandselect_vals[band].progdata;  in cx24123_pll_calculate()
547 	if (p->frequency < (cx24123_bandselect_vals[band].freq_low +  in cx24123_pll_calculate()
556 	ndiv = (((p->frequency * vco_div * 10) /  in cx24123_pll_calculate()
558 	adiv = (((p->frequency * vco_div * 10) /  in cx24123_pll_calculate()
562 		ndiv--;  in cx24123_pll_calculate()
566 	state->pllarg = (3 << 19) | (3 << 17) | (1 << 16) |  in cx24123_pll_calculate()
573  * Tuner data is 21 bits long, must be left-aligned in data.
579 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_pll_writereg()  local
588 	cx24123_writereg(state, 0x21, 0x15);  in cx24123_pll_writereg()
592 	cx24123_writereg(state, 0x22, (data >> 16) & 0xff);  in cx24123_pll_writereg()
593 	while ((cx24123_readreg(state, 0x20) & 0x40) == 0) {  in cx24123_pll_writereg()
597 			return -EREMOTEIO;  in cx24123_pll_writereg()
604 	cx24123_writereg(state, 0x22, (data >> 8) & 0xff);  in cx24123_pll_writereg()
605 	while ((cx24123_readreg(state, 0x20) & 0x40) == 0) {  in cx24123_pll_writereg()
609 			return -EREMOTEIO;  in cx24123_pll_writereg()
617 	cx24123_writereg(state, 0x22, (data) & 0xff);  in cx24123_pll_writereg()
618 	while ((cx24123_readreg(state, 0x20) & 0x80)) {  in cx24123_pll_writereg()
622 			return -EREMOTEIO;  in cx24123_pll_writereg()
628 	cx24123_writereg(state, 0x20, cx24123_readreg(state, 0x20) | 2);  in cx24123_pll_writereg()
629 	cx24123_writereg(state, 0x20, cx24123_readreg(state, 0x20) & 0xfd);  in cx24123_pll_writereg()
636 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;  in cx24123_pll_tune()
637 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_pll_tune()  local
640 	dprintk("frequency=%i\n", p->frequency);  in cx24123_pll_tune()
644 		return -EINVAL;  in cx24123_pll_tune()
648 	cx24123_pll_writereg(fe, state->VCAarg);  in cx24123_pll_tune()
649 	cx24123_pll_writereg(fe, state->VGAarg);  in cx24123_pll_tune()
652 	cx24123_pll_writereg(fe, state->bandselectarg);  in cx24123_pll_tune()
653 	cx24123_pll_writereg(fe, state->pllarg);  in cx24123_pll_tune()
656 	val = cx24123_readreg(state, 0x28) & ~0x3;  in cx24123_pll_tune()
657 	cx24123_writereg(state, 0x27, state->FILTune >> 2);  in cx24123_pll_tune()
658 	cx24123_writereg(state, 0x28, val | (state->FILTune & 0x3));  in cx24123_pll_tune()
660 	dprintk("pll tune VCA=%d, band=%d, pll=%d\n", state->VCAarg,  in cx24123_pll_tune()
661 			state->bandselectarg, state->pllarg);  in cx24123_pll_tune()
675 /* mode == 1 -> i2c-repeater, 0 -> bti */
676 static int cx24123_repeater_mode(struct cx24123_state *state, u8 mode, u8 start)  in cx24123_repeater_mode()  argument
678 	u8 r = cx24123_readreg(state, 0x23) & 0x1e;  in cx24123_repeater_mode()
683 	return cx24123_writereg(state, 0x23, r);  in cx24123_repeater_mode()
688 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_initfe()  local
695 		cx24123_writereg(state, cx24123_regdata[i].reg,  in cx24123_initfe()
699 	if (state->config->lnb_polarity)  in cx24123_initfe()
700 		cx24123_writereg(state, 0x32,  in cx24123_initfe()
701 			cx24123_readreg(state, 0x32) | 0x02);  in cx24123_initfe()
703 	if (state->config->dont_use_pll)  in cx24123_initfe()
704 		cx24123_repeater_mode(state, 1, 0);  in cx24123_initfe()
712 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_set_voltage()  local
715 	val = cx24123_readreg(state, 0x29) & ~0x40;  in cx24123_set_voltage()
720 		return cx24123_writereg(state, 0x29, val & 0x7f);  in cx24123_set_voltage()
723 		return cx24123_writereg(state, 0x29, val | 0x80);  in cx24123_set_voltage()
725 		/* already handled in cx88-dvb */  in cx24123_set_voltage()
727 	default:  in cx24123_set_voltage()
728 		return -EINVAL;  in cx24123_set_voltage()
735 static void cx24123_wait_for_diseqc(struct cx24123_state *state)  in cx24123_wait_for_diseqc()  argument
738 	while (!(cx24123_readreg(state, 0x29) & 0x40)) {  in cx24123_wait_for_diseqc()
751 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_send_diseqc_msg()  local
757 	tone = cx24123_readreg(state, 0x29);  in cx24123_send_diseqc_msg()
759 		cx24123_writereg(state, 0x29, tone & ~0x50);  in cx24123_send_diseqc_msg()
762 	cx24123_wait_for_diseqc(state);  in cx24123_send_diseqc_msg()
765 	cx24123_writereg(state, 0x2a, cx24123_readreg(state, 0x2a) & 0xfb);  in cx24123_send_diseqc_msg()
767 	for (i = 0; i < cmd->msg_len; i++)  in cx24123_send_diseqc_msg()
768 		cx24123_writereg(state, 0x2C + i, cmd->msg[i]);  in cx24123_send_diseqc_msg()
770 	val = cx24123_readreg(state, 0x29);  in cx24123_send_diseqc_msg()
771 	cx24123_writereg(state, 0x29, ((val & 0x90) | 0x40) |  in cx24123_send_diseqc_msg()
772 		((cmd->msg_len-3) & 3));  in cx24123_send_diseqc_msg()
775 	cx24123_wait_for_diseqc(state);  in cx24123_send_diseqc_msg()
779 		cx24123_writereg(state, 0x29, tone & ~0x40);  in cx24123_send_diseqc_msg()
787 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_diseqc_send_burst()  local
793 	tone = cx24123_readreg(state, 0x29);  in cx24123_diseqc_send_burst()
795 		cx24123_writereg(state, 0x29, tone & ~0x50);  in cx24123_diseqc_send_burst()
798 	cx24123_wait_for_diseqc(state);  in cx24123_diseqc_send_burst()
801 	cx24123_writereg(state, 0x2a, cx24123_readreg(state, 0x2a) | 0x4);  in cx24123_diseqc_send_burst()
803 	val = cx24123_readreg(state, 0x29);  in cx24123_diseqc_send_burst()
805 		cx24123_writereg(state, 0x29, ((val & 0x90) | 0x40 | 0x00));  in cx24123_diseqc_send_burst()
807 		cx24123_writereg(state, 0x29, ((val & 0x90) | 0x40 | 0x08));  in cx24123_diseqc_send_burst()
809 		return -EINVAL;  in cx24123_diseqc_send_burst()
811 	cx24123_wait_for_diseqc(state);  in cx24123_diseqc_send_burst()
812 	cx24123_writereg(state, 0x2a, cx24123_readreg(state, 0x2a) & 0xfb);  in cx24123_diseqc_send_burst()
816 		cx24123_writereg(state, 0x29, tone & ~0x40);  in cx24123_diseqc_send_burst()
823 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_read_status()  local
824 	int sync = cx24123_readreg(state, 0x14);  in cx24123_read_status()
827 	if (state->config->dont_use_pll) {  in cx24123_read_status()
829 		if (fe->ops.tuner_ops.get_status)  in cx24123_read_status()
830 			fe->ops.tuner_ops.get_status(fe, &tun_status);  in cx24123_read_status()
834 		int lock = cx24123_readreg(state, 0x20);  in cx24123_read_status()
844 	/* Reed-Solomon Status */  in cx24123_read_status()
860 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_read_ber()  local
864 	*ber = ((cx24123_readreg(state, 0x1c) & 0x3f) << 16) |  in cx24123_read_ber()
865 		(cx24123_readreg(state, 0x1d) << 8 |  in cx24123_read_ber()
866 		 cx24123_readreg(state, 0x1e));  in cx24123_read_ber()
876 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_read_signal_strength()  local
879 	*signal_strength = cx24123_readreg(state, 0x3b) << 8;  in cx24123_read_signal_strength()
888 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_read_snr()  local
892 	*snr = 65535 - (((u16)cx24123_readreg(state, 0x18) << 8) |  in cx24123_read_snr()
893 			 (u16)cx24123_readreg(state, 0x19));  in cx24123_read_snr()
902 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_set_frontend()  local
903 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;  in cx24123_set_frontend()
907 	if (state->config->set_ts_params)  in cx24123_set_frontend()
908 		state->config->set_ts_params(fe, 0);  in cx24123_set_frontend()
910 	state->currentfreq = p->frequency;  in cx24123_set_frontend()
911 	state->currentsymbolrate = p->symbol_rate;  in cx24123_set_frontend()
913 	cx24123_set_inversion(state, p->inversion);  in cx24123_set_frontend()
914 	cx24123_set_fec(state, p->fec_inner);  in cx24123_set_frontend()
915 	cx24123_set_symbolrate(state, p->symbol_rate);  in cx24123_set_frontend()
917 	if (!state->config->dont_use_pll)  in cx24123_set_frontend()
919 	else if (fe->ops.tuner_ops.set_params)  in cx24123_set_frontend()
920 		fe->ops.tuner_ops.set_params(fe);  in cx24123_set_frontend()
925 	cx24123_writereg(state, 0x03, (cx24123_readreg(state, 0x03) | 0x07));  in cx24123_set_frontend()
926 	cx24123_writereg(state, 0x00, 0x10);  in cx24123_set_frontend()
927 	cx24123_writereg(state, 0x00, 0);  in cx24123_set_frontend()
929 	if (state->config->agc_callback)  in cx24123_set_frontend()
930 		state->config->agc_callback(fe);  in cx24123_set_frontend()
938 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_get_frontend()  local
942 	if (cx24123_get_inversion(state, &p->inversion) != 0) {  in cx24123_get_frontend()
944 		return -EREMOTEIO;  in cx24123_get_frontend()
946 	if (cx24123_get_fec(state, &p->fec_inner) != 0) {  in cx24123_get_frontend()
948 		return -EREMOTEIO;  in cx24123_get_frontend()
950 	p->frequency = state->currentfreq;  in cx24123_get_frontend()
951 	p->symbol_rate = state->currentsymbolrate;  in cx24123_get_frontend()
958 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_set_tone()  local
962 	cx24123_wait_for_diseqc(state);  in cx24123_set_tone()
964 	val = cx24123_readreg(state, 0x29) & ~0x40;  in cx24123_set_tone()
969 		return cx24123_writereg(state, 0x29, val | 0x10);  in cx24123_set_tone()
972 		return cx24123_writereg(state, 0x29, val & 0xef);  in cx24123_set_tone()
973 	default:  in cx24123_set_tone()
974 		err("CASE reached default with tone=%d\n", tone);  in cx24123_set_tone()
975 		return -EINVAL;  in cx24123_set_tone()
1006 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_release()  local
1008 	i2c_del_adapter(&state->tuner_i2c_adapter);  in cx24123_release()
1009 	kfree(state);  in cx24123_release()
1015 	struct cx24123_state *state = i2c_get_adapdata(i2c_adap);  in cx24123_tuner_i2c_tuner_xfer()  local
1017 	cx24123_repeater_mode(state, 1, 1);  in cx24123_tuner_i2c_tuner_xfer()
1018 	return i2c_transfer(state->i2c, msg, num);  in cx24123_tuner_i2c_tuner_xfer()
1034 	struct cx24123_state *state = fe->demodulator_priv;  in cx24123_get_tuner_i2c_adapter()  local
1035 	return &state->tuner_i2c_adapter;  in cx24123_get_tuner_i2c_adapter()
1044 	/* allocate memory for the internal state */  in cx24123_attach()
1045 	struct cx24123_state *state =  in cx24123_attach()  local
1049 	if (state == NULL) {  in cx24123_attach()
1054 	/* setup the state */  in cx24123_attach()
1055 	state->config = config;  in cx24123_attach()
1056 	state->i2c = i2c;  in cx24123_attach()
1059 	state->demod_rev = cx24123_readreg(state, 0x00);  in cx24123_attach()
1060 	switch (state->demod_rev) {  in cx24123_attach()
1067 	default:  in cx24123_attach()
1068 		err("wrong demod revision: %x\n", state->demod_rev);  in cx24123_attach()
1073 	memcpy(&state->frontend.ops, &cx24123_ops,  in cx24123_attach()
1075 	state->frontend.demodulator_priv = state;  in cx24123_attach()
1078 	if (config->dont_use_pll)  in cx24123_attach()
1079 		cx24123_repeater_mode(state, 1, 0);  in cx24123_attach()
1081 	strscpy(state->tuner_i2c_adapter.name, "CX24123 tuner I2C bus",  in cx24123_attach()
1082 		sizeof(state->tuner_i2c_adapter.name));  in cx24123_attach()
1083 	state->tuner_i2c_adapter.algo      = &cx24123_tuner_i2c_algo;  in cx24123_attach()
1084 	state->tuner_i2c_adapter.algo_data = NULL;  in cx24123_attach()
1085 	state->tuner_i2c_adapter.dev.parent = i2c->dev.parent;  in cx24123_attach()
1086 	i2c_set_adapdata(&state->tuner_i2c_adapter, state);  in cx24123_attach()
1087 	if (i2c_add_adapter(&state->tuner_i2c_adapter) < 0) {  in cx24123_attach()
1092 	return &state->frontend;  in cx24123_attach()
1095 	kfree(state);  in cx24123_attach()