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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Sony CXD2820R demodulator driver4 *5 * Copyright (C) 2010 Antti Palosaari <crope@iki.fi>6 */7 8 9#include "cxd2820r_priv.h"10 11int cxd2820r_set_frontend_t2(struct dvb_frontend *fe)12{13	struct cxd2820r_priv *priv = fe->demodulator_priv;14	struct i2c_client *client = priv->client[0];15	struct dtv_frontend_properties *c = &fe->dtv_property_cache;16	int ret, bw_i;17	unsigned int utmp;18	u32 if_frequency;19	u8 buf[3], bw_param;20	u8 bw_params1[][5] = {21		{ 0x1c, 0xb3, 0x33, 0x33, 0x33 }, /* 5 MHz */22		{ 0x17, 0xea, 0xaa, 0xaa, 0xaa }, /* 6 MHz */23		{ 0x14, 0x80, 0x00, 0x00, 0x00 }, /* 7 MHz */24		{ 0x11, 0xf0, 0x00, 0x00, 0x00 }, /* 8 MHz */25	};26	struct reg_val_mask tab[] = {27		{ 0x00080, 0x02, 0xff },28		{ 0x00081, 0x20, 0xff },29		{ 0x00085, 0x07, 0xff },30		{ 0x00088, 0x01, 0xff },31		{ 0x02069, 0x01, 0xff },32 33		{ 0x0207f, 0x2a, 0xff },34		{ 0x02082, 0x0a, 0xff },35		{ 0x02083, 0x0a, 0xff },36		{ 0x020cb, priv->if_agc_polarity << 6, 0x40 },37		{ 0x02070, priv->ts_mode, 0xff },38		{ 0x02071, !priv->ts_clk_inv << 6, 0x40 },39		{ 0x020b5, priv->spec_inv << 4, 0x10 },40		{ 0x02567, 0x07, 0x0f },41		{ 0x02569, 0x03, 0x03 },42		{ 0x02595, 0x1a, 0xff },43		{ 0x02596, 0x50, 0xff },44		{ 0x02a8c, 0x00, 0xff },45		{ 0x02a8d, 0x34, 0xff },46		{ 0x02a45, 0x06, 0x07 },47		{ 0x03f10, 0x0d, 0xff },48		{ 0x03f11, 0x02, 0xff },49		{ 0x03f12, 0x01, 0xff },50		{ 0x03f23, 0x2c, 0xff },51		{ 0x03f51, 0x13, 0xff },52		{ 0x03f52, 0x01, 0xff },53		{ 0x03f53, 0x00, 0xff },54		{ 0x027e6, 0x14, 0xff },55		{ 0x02786, 0x02, 0x07 },56		{ 0x02787, 0x40, 0xe0 },57		{ 0x027ef, 0x10, 0x18 },58	};59 60	dev_dbg(&client->dev,61		"delivery_system=%d modulation=%d frequency=%u bandwidth_hz=%u inversion=%d stream_id=%u\n",62		c->delivery_system, c->modulation, c->frequency,63		c->bandwidth_hz, c->inversion, c->stream_id);64 65	switch (c->bandwidth_hz) {66	case 5000000:67		bw_i = 0;68		bw_param = 3;69		break;70	case 6000000:71		bw_i = 1;72		bw_param = 2;73		break;74	case 7000000:75		bw_i = 2;76		bw_param = 1;77		break;78	case 8000000:79		bw_i = 3;80		bw_param = 0;81		break;82	default:83		return -EINVAL;84	}85 86	/* program tuner */87	if (fe->ops.tuner_ops.set_params)88		fe->ops.tuner_ops.set_params(fe);89 90	if (priv->delivery_system != SYS_DVBT2) {91		ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab));92		if (ret)93			goto error;94	}95 96	priv->delivery_system = SYS_DVBT2;97 98	/* program IF frequency */99	if (fe->ops.tuner_ops.get_if_frequency) {100		ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);101		if (ret)102			goto error;103		dev_dbg(&client->dev, "if_frequency=%u\n", if_frequency);104	} else {105		ret = -EINVAL;106		goto error;107	}108 109	utmp = DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x1000000, CXD2820R_CLK);110	buf[0] = (utmp >> 16) & 0xff;111	buf[1] = (utmp >>  8) & 0xff;112	buf[2] = (utmp >>  0) & 0xff;113	ret = regmap_bulk_write(priv->regmap[0], 0x20b6, buf, 3);114	if (ret)115		goto error;116 117	/* PLP filtering */118	if (c->stream_id > 255) {119		dev_dbg(&client->dev, "disable PLP filtering\n");120		ret = regmap_write(priv->regmap[0], 0x23ad, 0x00);121		if (ret)122			goto error;123	} else {124		dev_dbg(&client->dev, "enable PLP filtering\n");125		ret = regmap_write(priv->regmap[0], 0x23af, c->stream_id & 0xff);126		if (ret)127			goto error;128		ret = regmap_write(priv->regmap[0], 0x23ad, 0x01);129		if (ret)130			goto error;131	}132 133	ret = regmap_bulk_write(priv->regmap[0], 0x209f, bw_params1[bw_i], 5);134	if (ret)135		goto error;136 137	ret = regmap_update_bits(priv->regmap[0], 0x20d7, 0xc0, bw_param << 6);138	if (ret)139		goto error;140 141	ret = regmap_write(priv->regmap[0], 0x00ff, 0x08);142	if (ret)143		goto error;144 145	ret = regmap_write(priv->regmap[0], 0x00fe, 0x01);146	if (ret)147		goto error;148 149	return ret;150error:151	dev_dbg(&client->dev, "failed=%d\n", ret);152	return ret;153 154}155 156int cxd2820r_get_frontend_t2(struct dvb_frontend *fe,157			     struct dtv_frontend_properties *c)158{159	struct cxd2820r_priv *priv = fe->demodulator_priv;160	struct i2c_client *client = priv->client[0];161	int ret;162	unsigned int utmp;163	u8 buf[2];164 165	dev_dbg(&client->dev, "\n");166 167	ret = regmap_bulk_read(priv->regmap[0], 0x205c, buf, 2);168	if (ret)169		goto error;170 171	switch ((buf[0] >> 0) & 0x07) {172	case 0:173		c->transmission_mode = TRANSMISSION_MODE_2K;174		break;175	case 1:176		c->transmission_mode = TRANSMISSION_MODE_8K;177		break;178	case 2:179		c->transmission_mode = TRANSMISSION_MODE_4K;180		break;181	case 3:182		c->transmission_mode = TRANSMISSION_MODE_1K;183		break;184	case 4:185		c->transmission_mode = TRANSMISSION_MODE_16K;186		break;187	case 5:188		c->transmission_mode = TRANSMISSION_MODE_32K;189		break;190	}191 192	switch ((buf[1] >> 4) & 0x07) {193	case 0:194		c->guard_interval = GUARD_INTERVAL_1_32;195		break;196	case 1:197		c->guard_interval = GUARD_INTERVAL_1_16;198		break;199	case 2:200		c->guard_interval = GUARD_INTERVAL_1_8;201		break;202	case 3:203		c->guard_interval = GUARD_INTERVAL_1_4;204		break;205	case 4:206		c->guard_interval = GUARD_INTERVAL_1_128;207		break;208	case 5:209		c->guard_interval = GUARD_INTERVAL_19_128;210		break;211	case 6:212		c->guard_interval = GUARD_INTERVAL_19_256;213		break;214	}215 216	ret = regmap_bulk_read(priv->regmap[0], 0x225b, buf, 2);217	if (ret)218		goto error;219 220	switch ((buf[0] >> 0) & 0x07) {221	case 0:222		c->fec_inner = FEC_1_2;223		break;224	case 1:225		c->fec_inner = FEC_3_5;226		break;227	case 2:228		c->fec_inner = FEC_2_3;229		break;230	case 3:231		c->fec_inner = FEC_3_4;232		break;233	case 4:234		c->fec_inner = FEC_4_5;235		break;236	case 5:237		c->fec_inner = FEC_5_6;238		break;239	}240 241	switch ((buf[1] >> 0) & 0x07) {242	case 0:243		c->modulation = QPSK;244		break;245	case 1:246		c->modulation = QAM_16;247		break;248	case 2:249		c->modulation = QAM_64;250		break;251	case 3:252		c->modulation = QAM_256;253		break;254	}255 256	ret = regmap_read(priv->regmap[0], 0x20b5, &utmp);257	if (ret)258		goto error;259 260	switch ((utmp >> 4) & 0x01) {261	case 0:262		c->inversion = INVERSION_OFF;263		break;264	case 1:265		c->inversion = INVERSION_ON;266		break;267	}268 269	return ret;270error:271	dev_dbg(&client->dev, "failed=%d\n", ret);272	return ret;273}274 275int cxd2820r_read_status_t2(struct dvb_frontend *fe, enum fe_status *status)276{277	struct cxd2820r_priv *priv = fe->demodulator_priv;278	struct dtv_frontend_properties *c = &fe->dtv_property_cache;279	struct i2c_client *client = priv->client[0];280	int ret;281	unsigned int utmp, utmp1, utmp2;282	u8 buf[4];283 284	/* Lock detection */285	ret = regmap_bulk_read(priv->regmap[0], 0x2010, &buf[0], 1);286	if (ret)287		goto error;288 289	utmp1 = (buf[0] >> 0) & 0x07;290	utmp2 = (buf[0] >> 5) & 0x01;291 292	if (utmp1 == 6 && utmp2 == 1) {293		*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |294			  FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;295	} else if (utmp1 == 6 || utmp2 == 1) {296		*status = FE_HAS_SIGNAL | FE_HAS_CARRIER |297			  FE_HAS_VITERBI | FE_HAS_SYNC;298	} else {299		*status = 0;300	}301 302	dev_dbg(&client->dev, "status=%02x raw=%*ph sync=%u ts=%u\n",303		*status, 1, buf, utmp1, utmp2);304 305	/* Signal strength */306	if (*status & FE_HAS_SIGNAL) {307		unsigned int strength;308 309		ret = regmap_bulk_read(priv->regmap[0], 0x2026, buf, 2);310		if (ret)311			goto error;312 313		utmp = buf[0] << 8 | buf[1] << 0;314		utmp = ~utmp & 0x0fff;315		/* Scale value to 0x0000-0xffff */316		strength = utmp << 4 | utmp >> 8;317 318		c->strength.len = 1;319		c->strength.stat[0].scale = FE_SCALE_RELATIVE;320		c->strength.stat[0].uvalue = strength;321	} else {322		c->strength.len = 1;323		c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;324	}325 326	/* CNR */327	if (*status & FE_HAS_VITERBI) {328		unsigned int cnr;329 330		ret = regmap_bulk_read(priv->regmap[0], 0x2028, buf, 2);331		if (ret)332			goto error;333 334		utmp = buf[0] << 8 | buf[1] << 0;335		utmp = utmp & 0x0fff;336		#define CXD2820R_LOG10_8_24 15151336 /* log10(8) << 24 */337		if (utmp)338			cnr = div_u64((u64)(intlog10(utmp)339				      - CXD2820R_LOG10_8_24) * 10000,340				      (1 << 24));341		else342			cnr = 0;343 344		c->cnr.len = 1;345		c->cnr.stat[0].scale = FE_SCALE_DECIBEL;346		c->cnr.stat[0].svalue = cnr;347	} else {348		c->cnr.len = 1;349		c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;350	}351 352	/* BER */353	if (*status & FE_HAS_SYNC) {354		unsigned int post_bit_error;355 356		ret = regmap_bulk_read(priv->regmap[0], 0x2039, buf, 4);357		if (ret)358			goto error;359 360		if ((buf[0] >> 4) & 0x01) {361			post_bit_error = buf[0] << 24 | buf[1] << 16 |362					 buf[2] << 8 | buf[3] << 0;363			post_bit_error &= 0x0fffffff;364		} else {365			post_bit_error = 0;366		}367 368		priv->post_bit_error += post_bit_error;369 370		c->post_bit_error.len = 1;371		c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;372		c->post_bit_error.stat[0].uvalue = priv->post_bit_error;373	} else {374		c->post_bit_error.len = 1;375		c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;376	}377 378	return ret;379error:380	dev_dbg(&client->dev, "failed=%d\n", ret);381	return ret;382}383 384int cxd2820r_sleep_t2(struct dvb_frontend *fe)385{386	struct cxd2820r_priv *priv = fe->demodulator_priv;387	struct i2c_client *client = priv->client[0];388	int ret;389	static const struct reg_val_mask tab[] = {390		{ 0x000ff, 0x1f, 0xff },391		{ 0x00085, 0x00, 0xff },392		{ 0x00088, 0x01, 0xff },393		{ 0x02069, 0x00, 0xff },394		{ 0x00081, 0x00, 0xff },395		{ 0x00080, 0x00, 0xff },396	};397 398	dev_dbg(&client->dev, "\n");399 400	ret = cxd2820r_wr_reg_val_mask_tab(priv, tab, ARRAY_SIZE(tab));401	if (ret)402		goto error;403 404	priv->delivery_system = SYS_UNDEFINED;405 406	return ret;407error:408	dev_dbg(&client->dev, "failed=%d\n", ret);409	return ret;410}411 412int cxd2820r_get_tune_settings_t2(struct dvb_frontend *fe,413	struct dvb_frontend_tune_settings *s)414{415	s->min_delay_ms = 1500;416	s->step_size = fe->ops.info.frequency_stepsize_hz * 2;417	s->max_drift = (fe->ops.info.frequency_stepsize_hz * 2) + 1;418 419	return 0;420}421