| // SPDX-License-Identifier: GPL-2.0 |
| // |
| // Socionext MN88443x series demodulator driver for ISDB-S/ISDB-T. |
| // |
| // Copyright (c) 2018 Socionext Inc. |
| |
| #include <linux/bitfield.h> |
| #include <linux/clk.h> |
| #include <linux/delay.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/of_device.h> |
| #include <linux/regmap.h> |
| #include <media/dvb_math.h> |
| |
| #include "mn88443x.h" |
| |
| /* ISDB-S registers */ |
| #define ATSIDU_S 0x2f |
| #define ATSIDL_S 0x30 |
| #define TSSET_S 0x31 |
| #define AGCREAD_S 0x5a |
| #define CPMON1_S 0x5e |
| #define CPMON1_S_FSYNC BIT(5) |
| #define CPMON1_S_ERRMON BIT(4) |
| #define CPMON1_S_SIGOFF BIT(3) |
| #define CPMON1_S_W2LOCK BIT(2) |
| #define CPMON1_S_W1LOCK BIT(1) |
| #define CPMON1_S_DW1LOCK BIT(0) |
| #define TRMON_S 0x60 |
| #define BERCNFLG_S 0x68 |
| #define BERCNFLG_S_BERVRDY BIT(5) |
| #define BERCNFLG_S_BERVCHK BIT(4) |
| #define BERCNFLG_S_BERDRDY BIT(3) |
| #define BERCNFLG_S_BERDCHK BIT(2) |
| #define CNRDXU_S 0x69 |
| #define CNRDXL_S 0x6a |
| #define CNRDYU_S 0x6b |
| #define CNRDYL_S 0x6c |
| #define BERVRDU_S 0x71 |
| #define BERVRDL_S 0x72 |
| #define DOSET1_S 0x73 |
| |
| /* Primary ISDB-T */ |
| #define PLLASET1 0x00 |
| #define PLLASET2 0x01 |
| #define PLLBSET1 0x02 |
| #define PLLBSET2 0x03 |
| #define PLLSET 0x04 |
| #define OUTCSET 0x08 |
| #define OUTCSET_CHDRV_8MA 0xff |
| #define OUTCSET_CHDRV_4MA 0x00 |
| #define PLDWSET 0x09 |
| #define PLDWSET_NORMAL 0x00 |
| #define PLDWSET_PULLDOWN 0xff |
| #define HIZSET1 0x0a |
| #define HIZSET2 0x0b |
| |
| /* Secondary ISDB-T (for MN884434 only) */ |
| #define RCVSET 0x00 |
| #define TSSET1_M 0x01 |
| #define TSSET2_M 0x02 |
| #define TSSET3_M 0x03 |
| #define INTACSET 0x08 |
| #define HIZSET3 0x0b |
| |
| /* ISDB-T registers */ |
| #define TSSET1 0x05 |
| #define TSSET1_TSASEL_MASK GENMASK(4, 3) |
| #define TSSET1_TSASEL_ISDBT (0x0 << 3) |
| #define TSSET1_TSASEL_ISDBS (0x1 << 3) |
| #define TSSET1_TSASEL_NONE (0x2 << 3) |
| #define TSSET1_TSBSEL_MASK GENMASK(2, 1) |
| #define TSSET1_TSBSEL_ISDBS (0x0 << 1) |
| #define TSSET1_TSBSEL_ISDBT (0x1 << 1) |
| #define TSSET1_TSBSEL_NONE (0x2 << 1) |
| #define TSSET2 0x06 |
| #define TSSET3 0x07 |
| #define TSSET3_INTASEL_MASK GENMASK(7, 6) |
| #define TSSET3_INTASEL_T (0x0 << 6) |
| #define TSSET3_INTASEL_S (0x1 << 6) |
| #define TSSET3_INTASEL_NONE (0x2 << 6) |
| #define TSSET3_INTBSEL_MASK GENMASK(5, 4) |
| #define TSSET3_INTBSEL_S (0x0 << 4) |
| #define TSSET3_INTBSEL_T (0x1 << 4) |
| #define TSSET3_INTBSEL_NONE (0x2 << 4) |
| #define OUTSET2 0x0d |
| #define PWDSET 0x0f |
| #define PWDSET_OFDMPD_MASK GENMASK(3, 2) |
| #define PWDSET_OFDMPD_DOWN BIT(3) |
| #define PWDSET_PSKPD_MASK GENMASK(1, 0) |
| #define PWDSET_PSKPD_DOWN BIT(1) |
| #define CLKSET1_T 0x11 |
| #define MDSET_T 0x13 |
| #define MDSET_T_MDAUTO_MASK GENMASK(7, 4) |
| #define MDSET_T_MDAUTO_AUTO (0xf << 4) |
| #define MDSET_T_MDAUTO_MANUAL (0x0 << 4) |
| #define MDSET_T_FFTS_MASK GENMASK(3, 2) |
| #define MDSET_T_FFTS_MODE1 (0x0 << 2) |
| #define MDSET_T_FFTS_MODE2 (0x1 << 2) |
| #define MDSET_T_FFTS_MODE3 (0x2 << 2) |
| #define MDSET_T_GI_MASK GENMASK(1, 0) |
| #define MDSET_T_GI_1_32 (0x0 << 0) |
| #define MDSET_T_GI_1_16 (0x1 << 0) |
| #define MDSET_T_GI_1_8 (0x2 << 0) |
| #define MDSET_T_GI_1_4 (0x3 << 0) |
| #define MDASET_T 0x14 |
| #define ADCSET1_T 0x20 |
| #define ADCSET1_T_REFSEL_MASK GENMASK(1, 0) |
| #define ADCSET1_T_REFSEL_2V (0x3 << 0) |
| #define ADCSET1_T_REFSEL_1_5V (0x2 << 0) |
| #define ADCSET1_T_REFSEL_1V (0x1 << 0) |
| #define NCOFREQU_T 0x24 |
| #define NCOFREQM_T 0x25 |
| #define NCOFREQL_T 0x26 |
| #define FADU_T 0x27 |
| #define FADM_T 0x28 |
| #define FADL_T 0x29 |
| #define AGCSET2_T 0x2c |
| #define AGCSET2_T_IFPOLINV_INC BIT(0) |
| #define AGCSET2_T_RFPOLINV_INC BIT(1) |
| #define AGCV3_T 0x3e |
| #define MDRD_T 0xa2 |
| #define MDRD_T_SEGID_MASK GENMASK(5, 4) |
| #define MDRD_T_SEGID_13 (0x0 << 4) |
| #define MDRD_T_SEGID_1 (0x1 << 4) |
| #define MDRD_T_SEGID_3 (0x2 << 4) |
| #define MDRD_T_FFTS_MASK GENMASK(3, 2) |
| #define MDRD_T_FFTS_MODE1 (0x0 << 2) |
| #define MDRD_T_FFTS_MODE2 (0x1 << 2) |
| #define MDRD_T_FFTS_MODE3 (0x2 << 2) |
| #define MDRD_T_GI_MASK GENMASK(1, 0) |
| #define MDRD_T_GI_1_32 (0x0 << 0) |
| #define MDRD_T_GI_1_16 (0x1 << 0) |
| #define MDRD_T_GI_1_8 (0x2 << 0) |
| #define MDRD_T_GI_1_4 (0x3 << 0) |
| #define SSEQRD_T 0xa3 |
| #define SSEQRD_T_SSEQSTRD_MASK GENMASK(3, 0) |
| #define SSEQRD_T_SSEQSTRD_RESET (0x0 << 0) |
| #define SSEQRD_T_SSEQSTRD_TUNING (0x1 << 0) |
| #define SSEQRD_T_SSEQSTRD_AGC (0x2 << 0) |
| #define SSEQRD_T_SSEQSTRD_SEARCH (0x3 << 0) |
| #define SSEQRD_T_SSEQSTRD_CLOCK_SYNC (0x4 << 0) |
| #define SSEQRD_T_SSEQSTRD_FREQ_SYNC (0x8 << 0) |
| #define SSEQRD_T_SSEQSTRD_FRAME_SYNC (0x9 << 0) |
| #define SSEQRD_T_SSEQSTRD_SYNC (0xa << 0) |
| #define SSEQRD_T_SSEQSTRD_LOCK (0xb << 0) |
| #define AGCRDU_T 0xa8 |
| #define AGCRDL_T 0xa9 |
| #define CNRDU_T 0xbe |
| #define CNRDL_T 0xbf |
| #define BERFLG_T 0xc0 |
| #define BERFLG_T_BERDRDY BIT(7) |
| #define BERFLG_T_BERDCHK BIT(6) |
| #define BERFLG_T_BERVRDYA BIT(5) |
| #define BERFLG_T_BERVCHKA BIT(4) |
| #define BERFLG_T_BERVRDYB BIT(3) |
| #define BERFLG_T_BERVCHKB BIT(2) |
| #define BERFLG_T_BERVRDYC BIT(1) |
| #define BERFLG_T_BERVCHKC BIT(0) |
| #define BERRDU_T 0xc1 |
| #define BERRDM_T 0xc2 |
| #define BERRDL_T 0xc3 |
| #define BERLENRDU_T 0xc4 |
| #define BERLENRDL_T 0xc5 |
| #define ERRFLG_T 0xc6 |
| #define ERRFLG_T_BERDOVF BIT(7) |
| #define ERRFLG_T_BERVOVFA BIT(6) |
| #define ERRFLG_T_BERVOVFB BIT(5) |
| #define ERRFLG_T_BERVOVFC BIT(4) |
| #define ERRFLG_T_NERRFA BIT(3) |
| #define ERRFLG_T_NERRFB BIT(2) |
| #define ERRFLG_T_NERRFC BIT(1) |
| #define ERRFLG_T_NERRF BIT(0) |
| #define DOSET1_T 0xcf |
| |
| #define CLK_LOW 4000000 |
| #define CLK_DIRECT 20200000 |
| #define CLK_MAX 25410000 |
| |
| #define S_T_FREQ 8126984 /* 512 / 63 MHz */ |
| |
| struct mn88443x_spec { |
| bool primary; |
| }; |
| |
| struct mn88443x_priv { |
| const struct mn88443x_spec *spec; |
| |
| struct dvb_frontend fe; |
| struct clk *mclk; |
| struct gpio_desc *reset_gpio; |
| u32 clk_freq; |
| u32 if_freq; |
| |
| /* Common */ |
| bool use_clkbuf; |
| |
| /* ISDB-S */ |
| struct i2c_client *client_s; |
| struct regmap *regmap_s; |
| |
| /* ISDB-T */ |
| struct i2c_client *client_t; |
| struct regmap *regmap_t; |
| }; |
| |
| static void mn88443x_cmn_power_on(struct mn88443x_priv *chip) |
| { |
| struct regmap *r_t = chip->regmap_t; |
| |
| clk_prepare_enable(chip->mclk); |
| |
| gpiod_set_value_cansleep(chip->reset_gpio, 1); |
| usleep_range(100, 1000); |
| gpiod_set_value_cansleep(chip->reset_gpio, 0); |
| |
| if (chip->spec->primary) { |
| regmap_write(r_t, OUTCSET, OUTCSET_CHDRV_8MA); |
| regmap_write(r_t, PLDWSET, PLDWSET_NORMAL); |
| regmap_write(r_t, HIZSET1, 0x80); |
| regmap_write(r_t, HIZSET2, 0xe0); |
| } else { |
| regmap_write(r_t, HIZSET3, 0x8f); |
| } |
| } |
| |
| static void mn88443x_cmn_power_off(struct mn88443x_priv *chip) |
| { |
| gpiod_set_value_cansleep(chip->reset_gpio, 1); |
| |
| clk_disable_unprepare(chip->mclk); |
| } |
| |
| static void mn88443x_s_sleep(struct mn88443x_priv *chip) |
| { |
| struct regmap *r_t = chip->regmap_t; |
| |
| regmap_update_bits(r_t, PWDSET, PWDSET_PSKPD_MASK, |
| PWDSET_PSKPD_DOWN); |
| } |
| |
| static void mn88443x_s_wake(struct mn88443x_priv *chip) |
| { |
| struct regmap *r_t = chip->regmap_t; |
| |
| regmap_update_bits(r_t, PWDSET, PWDSET_PSKPD_MASK, 0); |
| } |
| |
| static void mn88443x_s_tune(struct mn88443x_priv *chip, |
| struct dtv_frontend_properties *c) |
| { |
| struct regmap *r_s = chip->regmap_s; |
| |
| regmap_write(r_s, ATSIDU_S, c->stream_id >> 8); |
| regmap_write(r_s, ATSIDL_S, c->stream_id); |
| regmap_write(r_s, TSSET_S, 0); |
| } |
| |
| static int mn88443x_s_read_status(struct mn88443x_priv *chip, |
| struct dtv_frontend_properties *c, |
| enum fe_status *status) |
| { |
| struct regmap *r_s = chip->regmap_s; |
| u32 cpmon, tmpu, tmpl, flg; |
| u64 tmp; |
| |
| /* Sync detection */ |
| regmap_read(r_s, CPMON1_S, &cpmon); |
| |
| *status = 0; |
| if (cpmon & CPMON1_S_FSYNC) |
| *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; |
| if (cpmon & CPMON1_S_W2LOCK) |
| *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER; |
| |
| /* Signal strength */ |
| c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| |
| if (*status & FE_HAS_SIGNAL) { |
| u32 agc; |
| |
| regmap_read(r_s, AGCREAD_S, &tmpu); |
| agc = tmpu << 8; |
| |
| c->strength.len = 1; |
| c->strength.stat[0].scale = FE_SCALE_RELATIVE; |
| c->strength.stat[0].uvalue = agc; |
| } |
| |
| /* C/N rate */ |
| c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| |
| if (*status & FE_HAS_VITERBI) { |
| u32 cnr = 0, x, y, d; |
| u64 d_3 = 0; |
| |
| regmap_read(r_s, CNRDXU_S, &tmpu); |
| regmap_read(r_s, CNRDXL_S, &tmpl); |
| x = (tmpu << 8) | tmpl; |
| regmap_read(r_s, CNRDYU_S, &tmpu); |
| regmap_read(r_s, CNRDYL_S, &tmpl); |
| y = (tmpu << 8) | tmpl; |
| |
| /* CNR[dB]: 10 * log10(D) - 30.74 / D^3 - 3 */ |
| /* D = x^2 / (2^15 * y - x^2) */ |
| d = (y << 15) - x * x; |
| if (d > 0) { |
| /* (2^4 * D)^3 = 2^12 * D^3 */ |
| /* 3.074 * 2^(12 + 24) = 211243671486 */ |
| d_3 = div_u64(16 * x * x, d); |
| d_3 = d_3 * d_3 * d_3; |
| if (d_3) |
| d_3 = div_u64(211243671486ULL, d_3); |
| } |
| |
| if (d_3) { |
| /* 0.3 * 2^24 = 5033164 */ |
| tmp = (s64)2 * intlog10(x) - intlog10(abs(d)) - d_3 |
| - 5033164; |
| cnr = div_u64(tmp * 10000, 1 << 24); |
| } |
| |
| if (cnr) { |
| c->cnr.len = 1; |
| c->cnr.stat[0].scale = FE_SCALE_DECIBEL; |
| c->cnr.stat[0].uvalue = cnr; |
| } |
| } |
| |
| /* BER */ |
| c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| |
| regmap_read(r_s, BERCNFLG_S, &flg); |
| |
| if ((*status & FE_HAS_VITERBI) && (flg & BERCNFLG_S_BERVRDY)) { |
| u32 bit_err, bit_cnt; |
| |
| regmap_read(r_s, BERVRDU_S, &tmpu); |
| regmap_read(r_s, BERVRDL_S, &tmpl); |
| bit_err = (tmpu << 8) | tmpl; |
| bit_cnt = (1 << 13) * 204; |
| |
| if (bit_cnt) { |
| c->post_bit_error.len = 1; |
| c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; |
| c->post_bit_error.stat[0].uvalue = bit_err; |
| c->post_bit_count.len = 1; |
| c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; |
| c->post_bit_count.stat[0].uvalue = bit_cnt; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void mn88443x_t_sleep(struct mn88443x_priv *chip) |
| { |
| struct regmap *r_t = chip->regmap_t; |
| |
| regmap_update_bits(r_t, PWDSET, PWDSET_OFDMPD_MASK, |
| PWDSET_OFDMPD_DOWN); |
| } |
| |
| static void mn88443x_t_wake(struct mn88443x_priv *chip) |
| { |
| struct regmap *r_t = chip->regmap_t; |
| |
| regmap_update_bits(r_t, PWDSET, PWDSET_OFDMPD_MASK, 0); |
| } |
| |
| static bool mn88443x_t_is_valid_clk(u32 adckt, u32 if_freq) |
| { |
| if (if_freq == DIRECT_IF_57MHZ) { |
| if (adckt >= CLK_DIRECT && adckt <= 21000000) |
| return true; |
| if (adckt >= 25300000 && adckt <= CLK_MAX) |
| return true; |
| } else if (if_freq == DIRECT_IF_44MHZ) { |
| if (adckt >= 25000000 && adckt <= CLK_MAX) |
| return true; |
| } else if (if_freq >= LOW_IF_4MHZ && if_freq < DIRECT_IF_44MHZ) { |
| if (adckt >= CLK_DIRECT && adckt <= CLK_MAX) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static int mn88443x_t_set_freq(struct mn88443x_priv *chip) |
| { |
| struct device *dev = &chip->client_s->dev; |
| struct regmap *r_t = chip->regmap_t; |
| s64 adckt, nco, ad_t; |
| u32 m, v; |
| |
| /* Clock buffer (but not supported) or XTAL */ |
| if (chip->clk_freq >= CLK_LOW && chip->clk_freq < CLK_DIRECT) { |
| chip->use_clkbuf = true; |
| regmap_write(r_t, CLKSET1_T, 0x07); |
| |
| adckt = 0; |
| } else { |
| chip->use_clkbuf = false; |
| regmap_write(r_t, CLKSET1_T, 0x00); |
| |
| adckt = chip->clk_freq; |
| } |
| if (!mn88443x_t_is_valid_clk(adckt, chip->if_freq)) { |
| dev_err(dev, "Invalid clock, CLK:%d, ADCKT:%lld, IF:%d\n", |
| chip->clk_freq, adckt, chip->if_freq); |
| return -EINVAL; |
| } |
| |
| /* Direct IF or Low IF */ |
| if (chip->if_freq == DIRECT_IF_57MHZ || |
| chip->if_freq == DIRECT_IF_44MHZ) |
| nco = adckt * 2 - chip->if_freq; |
| else |
| nco = -((s64)chip->if_freq); |
| nco = div_s64(nco << 24, adckt); |
| ad_t = div_s64(adckt << 22, S_T_FREQ); |
| |
| regmap_write(r_t, NCOFREQU_T, nco >> 16); |
| regmap_write(r_t, NCOFREQM_T, nco >> 8); |
| regmap_write(r_t, NCOFREQL_T, nco); |
| regmap_write(r_t, FADU_T, ad_t >> 16); |
| regmap_write(r_t, FADM_T, ad_t >> 8); |
| regmap_write(r_t, FADL_T, ad_t); |
| |
| /* Level of IF */ |
| m = ADCSET1_T_REFSEL_MASK; |
| v = ADCSET1_T_REFSEL_1_5V; |
| regmap_update_bits(r_t, ADCSET1_T, m, v); |
| |
| /* Polarity of AGC */ |
| v = AGCSET2_T_IFPOLINV_INC | AGCSET2_T_RFPOLINV_INC; |
| regmap_update_bits(r_t, AGCSET2_T, v, v); |
| |
| /* Lower output level of AGC */ |
| regmap_write(r_t, AGCV3_T, 0x00); |
| |
| regmap_write(r_t, MDSET_T, 0xfa); |
| |
| return 0; |
| } |
| |
| static void mn88443x_t_tune(struct mn88443x_priv *chip, |
| struct dtv_frontend_properties *c) |
| { |
| struct regmap *r_t = chip->regmap_t; |
| u32 m, v; |
| |
| m = MDSET_T_MDAUTO_MASK | MDSET_T_FFTS_MASK | MDSET_T_GI_MASK; |
| v = MDSET_T_MDAUTO_AUTO | MDSET_T_FFTS_MODE3 | MDSET_T_GI_1_8; |
| regmap_update_bits(r_t, MDSET_T, m, v); |
| |
| regmap_write(r_t, MDASET_T, 0); |
| } |
| |
| static int mn88443x_t_read_status(struct mn88443x_priv *chip, |
| struct dtv_frontend_properties *c, |
| enum fe_status *status) |
| { |
| struct regmap *r_t = chip->regmap_t; |
| u32 seqrd, st, flg, tmpu, tmpm, tmpl; |
| u64 tmp; |
| |
| /* Sync detection */ |
| regmap_read(r_t, SSEQRD_T, &seqrd); |
| st = seqrd & SSEQRD_T_SSEQSTRD_MASK; |
| |
| *status = 0; |
| if (st >= SSEQRD_T_SSEQSTRD_SYNC) |
| *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; |
| if (st >= SSEQRD_T_SSEQSTRD_FRAME_SYNC) |
| *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER; |
| |
| /* Signal strength */ |
| c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| |
| if (*status & FE_HAS_SIGNAL) { |
| u32 agc; |
| |
| regmap_read(r_t, AGCRDU_T, &tmpu); |
| regmap_read(r_t, AGCRDL_T, &tmpl); |
| agc = (tmpu << 8) | tmpl; |
| |
| c->strength.len = 1; |
| c->strength.stat[0].scale = FE_SCALE_RELATIVE; |
| c->strength.stat[0].uvalue = agc; |
| } |
| |
| /* C/N rate */ |
| c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| |
| if (*status & FE_HAS_VITERBI) { |
| u32 cnr; |
| |
| regmap_read(r_t, CNRDU_T, &tmpu); |
| regmap_read(r_t, CNRDL_T, &tmpl); |
| |
| if (tmpu || tmpl) { |
| /* CNR[dB]: 10 * (log10(65536 / value) + 0.2) */ |
| /* intlog10(65536) = 80807124, 0.2 * 2^24 = 3355443 */ |
| tmp = (u64)80807124 - intlog10((tmpu << 8) | tmpl) |
| + 3355443; |
| cnr = div_u64(tmp * 10000, 1 << 24); |
| } else { |
| cnr = 0; |
| } |
| |
| c->cnr.len = 1; |
| c->cnr.stat[0].scale = FE_SCALE_DECIBEL; |
| c->cnr.stat[0].uvalue = cnr; |
| } |
| |
| /* BER */ |
| c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; |
| |
| regmap_read(r_t, BERFLG_T, &flg); |
| |
| if ((*status & FE_HAS_VITERBI) && (flg & BERFLG_T_BERVRDYA)) { |
| u32 bit_err, bit_cnt; |
| |
| regmap_read(r_t, BERRDU_T, &tmpu); |
| regmap_read(r_t, BERRDM_T, &tmpm); |
| regmap_read(r_t, BERRDL_T, &tmpl); |
| bit_err = (tmpu << 16) | (tmpm << 8) | tmpl; |
| |
| regmap_read(r_t, BERLENRDU_T, &tmpu); |
| regmap_read(r_t, BERLENRDL_T, &tmpl); |
| bit_cnt = ((tmpu << 8) | tmpl) * 203 * 8; |
| |
| if (bit_cnt) { |
| c->post_bit_error.len = 1; |
| c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; |
| c->post_bit_error.stat[0].uvalue = bit_err; |
| c->post_bit_count.len = 1; |
| c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; |
| c->post_bit_count.stat[0].uvalue = bit_cnt; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int mn88443x_sleep(struct dvb_frontend *fe) |
| { |
| struct mn88443x_priv *chip = fe->demodulator_priv; |
| |
| mn88443x_s_sleep(chip); |
| mn88443x_t_sleep(chip); |
| |
| return 0; |
| } |
| |
| static int mn88443x_set_frontend(struct dvb_frontend *fe) |
| { |
| struct mn88443x_priv *chip = fe->demodulator_priv; |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| struct regmap *r_s = chip->regmap_s; |
| struct regmap *r_t = chip->regmap_t; |
| u8 tssel = 0, intsel = 0; |
| |
| if (c->delivery_system == SYS_ISDBS) { |
| mn88443x_s_wake(chip); |
| mn88443x_t_sleep(chip); |
| |
| tssel = TSSET1_TSASEL_ISDBS; |
| intsel = TSSET3_INTASEL_S; |
| } else if (c->delivery_system == SYS_ISDBT) { |
| mn88443x_s_sleep(chip); |
| mn88443x_t_wake(chip); |
| |
| mn88443x_t_set_freq(chip); |
| |
| tssel = TSSET1_TSASEL_ISDBT; |
| intsel = TSSET3_INTASEL_T; |
| } |
| |
| regmap_update_bits(r_t, TSSET1, |
| TSSET1_TSASEL_MASK | TSSET1_TSBSEL_MASK, |
| tssel | TSSET1_TSBSEL_NONE); |
| regmap_write(r_t, TSSET2, 0); |
| regmap_update_bits(r_t, TSSET3, |
| TSSET3_INTASEL_MASK | TSSET3_INTBSEL_MASK, |
| intsel | TSSET3_INTBSEL_NONE); |
| |
| regmap_write(r_t, DOSET1_T, 0x95); |
| regmap_write(r_s, DOSET1_S, 0x80); |
| |
| if (c->delivery_system == SYS_ISDBS) |
| mn88443x_s_tune(chip, c); |
| else if (c->delivery_system == SYS_ISDBT) |
| mn88443x_t_tune(chip, c); |
| |
| if (fe->ops.tuner_ops.set_params) { |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 1); |
| fe->ops.tuner_ops.set_params(fe); |
| if (fe->ops.i2c_gate_ctrl) |
| fe->ops.i2c_gate_ctrl(fe, 0); |
| } |
| |
| return 0; |
| } |
| |
| static int mn88443x_get_tune_settings(struct dvb_frontend *fe, |
| struct dvb_frontend_tune_settings *s) |
| { |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| |
| s->min_delay_ms = 850; |
| |
| if (c->delivery_system == SYS_ISDBS) { |
| s->max_drift = 30000 * 2 + 1; |
| s->step_size = 30000; |
| } else if (c->delivery_system == SYS_ISDBT) { |
| s->max_drift = 142857 * 2 + 1; |
| s->step_size = 142857 * 2; |
| } |
| |
| return 0; |
| } |
| |
| static int mn88443x_read_status(struct dvb_frontend *fe, enum fe_status *status) |
| { |
| struct mn88443x_priv *chip = fe->demodulator_priv; |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| |
| if (c->delivery_system == SYS_ISDBS) |
| return mn88443x_s_read_status(chip, c, status); |
| |
| if (c->delivery_system == SYS_ISDBT) |
| return mn88443x_t_read_status(chip, c, status); |
| |
| return -EINVAL; |
| } |
| |
| static const struct dvb_frontend_ops mn88443x_ops = { |
| .delsys = { SYS_ISDBS, SYS_ISDBT }, |
| .info = { |
| .name = "Socionext MN88443x", |
| .frequency_min_hz = 470 * MHz, |
| .frequency_max_hz = 2071 * MHz, |
| .symbol_rate_min = 28860000, |
| .symbol_rate_max = 28860000, |
| .caps = FE_CAN_INVERSION_AUTO | FE_CAN_FEC_AUTO | |
| FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | |
| FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO, |
| }, |
| |
| .sleep = mn88443x_sleep, |
| .set_frontend = mn88443x_set_frontend, |
| .get_tune_settings = mn88443x_get_tune_settings, |
| .read_status = mn88443x_read_status, |
| }; |
| |
| static const struct regmap_config regmap_config = { |
| .reg_bits = 8, |
| .val_bits = 8, |
| .cache_type = REGCACHE_NONE, |
| }; |
| |
| static int mn88443x_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| struct mn88443x_config *conf = client->dev.platform_data; |
| struct mn88443x_priv *chip; |
| struct device *dev = &client->dev; |
| int ret; |
| |
| chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); |
| if (!chip) |
| return -ENOMEM; |
| |
| if (dev->of_node) |
| chip->spec = of_device_get_match_data(dev); |
| else |
| chip->spec = (struct mn88443x_spec *)id->driver_data; |
| if (!chip->spec) |
| return -EINVAL; |
| |
| chip->mclk = devm_clk_get(dev, "mclk"); |
| if (IS_ERR(chip->mclk) && !conf) { |
| dev_err(dev, "Failed to request mclk: %ld\n", |
| PTR_ERR(chip->mclk)); |
| return PTR_ERR(chip->mclk); |
| } |
| |
| ret = of_property_read_u32(dev->of_node, "if-frequency", |
| &chip->if_freq); |
| if (ret && !conf) { |
| dev_err(dev, "Failed to load IF frequency: %d.\n", ret); |
| return ret; |
| } |
| |
| chip->reset_gpio = devm_gpiod_get_optional(dev, "reset", |
| GPIOD_OUT_HIGH); |
| if (IS_ERR(chip->reset_gpio)) { |
| dev_err(dev, "Failed to request reset_gpio: %ld\n", |
| PTR_ERR(chip->reset_gpio)); |
| return PTR_ERR(chip->reset_gpio); |
| } |
| |
| if (conf) { |
| chip->mclk = conf->mclk; |
| chip->if_freq = conf->if_freq; |
| chip->reset_gpio = conf->reset_gpio; |
| |
| *conf->fe = &chip->fe; |
| } |
| |
| chip->client_s = client; |
| chip->regmap_s = devm_regmap_init_i2c(chip->client_s, ®map_config); |
| if (IS_ERR(chip->regmap_s)) |
| return PTR_ERR(chip->regmap_s); |
| |
| /* |
| * Chip has two I2C addresses for each satellite/terrestrial system. |
| * ISDB-T uses address ISDB-S + 4, so we register a dummy client. |
| */ |
| chip->client_t = i2c_new_dummy(client->adapter, client->addr + 4); |
| if (!chip->client_t) |
| return -ENODEV; |
| |
| chip->regmap_t = devm_regmap_init_i2c(chip->client_t, ®map_config); |
| if (IS_ERR(chip->regmap_t)) { |
| ret = PTR_ERR(chip->regmap_t); |
| goto err_i2c_t; |
| } |
| |
| chip->clk_freq = clk_get_rate(chip->mclk); |
| |
| memcpy(&chip->fe.ops, &mn88443x_ops, sizeof(mn88443x_ops)); |
| chip->fe.demodulator_priv = chip; |
| i2c_set_clientdata(client, chip); |
| |
| mn88443x_cmn_power_on(chip); |
| mn88443x_s_sleep(chip); |
| mn88443x_t_sleep(chip); |
| |
| return 0; |
| |
| err_i2c_t: |
| i2c_unregister_device(chip->client_t); |
| |
| return ret; |
| } |
| |
| static int mn88443x_remove(struct i2c_client *client) |
| { |
| struct mn88443x_priv *chip = i2c_get_clientdata(client); |
| |
| mn88443x_cmn_power_off(chip); |
| |
| i2c_unregister_device(chip->client_t); |
| |
| return 0; |
| } |
| |
| static const struct mn88443x_spec mn88443x_spec_pri = { |
| .primary = true, |
| }; |
| |
| static const struct mn88443x_spec mn88443x_spec_sec = { |
| .primary = false, |
| }; |
| |
| static const struct of_device_id mn88443x_of_match[] = { |
| { .compatible = "socionext,mn884433", .data = &mn88443x_spec_pri, }, |
| { .compatible = "socionext,mn884434-0", .data = &mn88443x_spec_pri, }, |
| { .compatible = "socionext,mn884434-1", .data = &mn88443x_spec_sec, }, |
| {} |
| }; |
| MODULE_DEVICE_TABLE(of, mn88443x_of_match); |
| |
| static const struct i2c_device_id mn88443x_i2c_id[] = { |
| { "mn884433", (kernel_ulong_t)&mn88443x_spec_pri }, |
| { "mn884434-0", (kernel_ulong_t)&mn88443x_spec_pri }, |
| { "mn884434-1", (kernel_ulong_t)&mn88443x_spec_sec }, |
| {} |
| }; |
| MODULE_DEVICE_TABLE(i2c, mn88443x_i2c_id); |
| |
| static struct i2c_driver mn88443x_driver = { |
| .driver = { |
| .name = "mn88443x", |
| .of_match_table = of_match_ptr(mn88443x_of_match), |
| }, |
| .probe = mn88443x_probe, |
| .remove = mn88443x_remove, |
| .id_table = mn88443x_i2c_id, |
| }; |
| |
| module_i2c_driver(mn88443x_driver); |
| |
| MODULE_AUTHOR("Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>"); |
| MODULE_DESCRIPTION("Socionext MN88443x series demodulator driver."); |
| MODULE_LICENSE("GPL v2"); |