2 * Afatech AF9013 demodulator driver
4 * Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
6 * Thanks to Afatech who kindly provided information.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/moduleparam.h>
27 #include <linux/init.h>
28 #include <linux/delay.h>
29 #include <linux/string.h>
30 #include <linux/slab.h>
31 #include <linux/firmware.h>
33 #include "dvb_frontend.h"
34 #include "af9013_priv.h"
40 struct i2c_adapter *i2c;
41 struct dvb_frontend frontend;
43 struct af9013_config config;
45 /* tuner/demod RF and IF AGC limits used for signal strength calc */
46 u8 signal_strength_en, rf_50, rf_80, if_50, if_80;
52 unsigned long next_statistics_check;
55 static u8 regmask[8] = { 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };
57 static int af9013_write_regs(struct af9013_state *state, u8 mbox, u16 reg,
61 struct i2c_msg msg = {
62 .addr = state->config.demod_address,
70 memcpy(&buf[3], val, len);
72 if (i2c_transfer(state->i2c, &msg, 1) != 1) {
73 warn("I2C write failed reg:%04x len:%d", reg, len);
79 static int af9013_write_ofdm_regs(struct af9013_state *state, u16 reg, u8 *val,
82 u8 mbox = (1 << 0)|(1 << 1)|((len - 1) << 2)|(0 << 6)|(0 << 7);
83 return af9013_write_regs(state, mbox, reg, val, len);
86 static int af9013_write_ofsm_regs(struct af9013_state *state, u16 reg, u8 *val,
89 u8 mbox = (1 << 0)|(1 << 1)|((len - 1) << 2)|(1 << 6)|(1 << 7);
90 return af9013_write_regs(state, mbox, reg, val, len);
93 /* write single register */
94 static int af9013_write_reg(struct af9013_state *state, u16 reg, u8 val)
96 return af9013_write_ofdm_regs(state, reg, &val, 1);
99 /* read single register */
100 static int af9013_read_reg(struct af9013_state *state, u16 reg, u8 *val)
102 u8 obuf[3] = { reg >> 8, reg & 0xff, 0 };
104 struct i2c_msg msg[2] = {
106 .addr = state->config.demod_address,
111 .addr = state->config.demod_address,
118 if (i2c_transfer(state->i2c, msg, 2) != 2) {
119 warn("I2C read failed reg:%04x", reg);
126 static int af9013_write_reg_bits(struct af9013_state *state, u16 reg, u8 pos,
132 ret = af9013_read_reg(state, reg, &tmp);
136 mask = regmask[len - 1] << pos;
137 tmp = (tmp & ~mask) | ((val << pos) & mask);
139 return af9013_write_reg(state, reg, tmp);
142 static int af9013_read_reg_bits(struct af9013_state *state, u16 reg, u8 pos,
148 ret = af9013_read_reg(state, reg, &tmp);
151 *val = (tmp >> pos) & regmask[len - 1];
155 static int af9013_set_gpio(struct af9013_state *state, u8 gpio, u8 gpioval)
160 deb_info("%s: gpio:%d gpioval:%02x\n", __func__, gpio, gpioval);
162 /* GPIO0 & GPIO1 0xd735
163 GPIO2 & GPIO3 0xd736 */
176 err("invalid gpio:%d\n", gpio);
193 ret = af9013_write_reg_bits(state, addr, pos, 4, gpioval);
199 static u32 af913_div(u32 a, u32 b, u32 x)
202 deb_info("%s: a:%d b:%d x:%d\n", __func__, a, b, x);
209 for (i = 0; i < x; i++) {
217 r = (c << (u32)x) + r;
219 deb_info("%s: a:%d b:%d x:%d r:%d r:%x\n", __func__, a, b, x, r, r);
223 static int af9013_set_coeff(struct af9013_state *state, fe_bandwidth_t bw)
225 int ret, i, j, found;
226 deb_info("%s: adc_clock:%d bw:%d\n", __func__,
227 state->config.adc_clock, bw);
229 /* lookup coeff from table */
230 for (i = 0, found = 0; i < ARRAY_SIZE(coeff_table); i++) {
231 if (coeff_table[i].adc_clock == state->config.adc_clock &&
232 coeff_table[i].bw == bw) {
239 err("invalid bw or clock");
244 deb_info("%s: coeff: ", __func__);
245 debug_dump(coeff_table[i].val, sizeof(coeff_table[i].val), deb_info);
248 for (j = 0; j < sizeof(coeff_table[i].val); j++) {
249 ret = af9013_write_reg(state, 0xae00 + j,
250 coeff_table[i].val[j]);
259 static int af9013_set_adc_ctrl(struct af9013_state *state)
265 deb_info("%s: adc_clock:%d\n", __func__, state->config.adc_clock);
267 /* adc frequency type */
268 switch (state->config.adc_clock) {
269 case 28800: /* 28.800 MHz */
272 case 20480: /* 20.480 MHz */
275 case 28000: /* 28.000 MHz */
278 case 25000: /* 25.000 MHz */
286 adc_cw = af913_div(state->config.adc_clock*1000, 1000000ul, 19ul);
288 buf[0] = (u8) ((adc_cw & 0x000000ff));
289 buf[1] = (u8) ((adc_cw & 0x0000ff00) >> 8);
290 buf[2] = (u8) ((adc_cw & 0x00ff0000) >> 16);
292 deb_info("%s: adc_cw:", __func__);
293 debug_dump(buf, sizeof(buf), deb_info);
296 for (i = 0; i < sizeof(buf); i++) {
297 ret = af9013_write_reg(state, 0xd180 + i, buf[i]);
301 ret = af9013_write_reg_bits(state, 0x9bd2, 0, 4, tmp);
306 static int af9013_set_freq_ctrl(struct af9013_state *state, fe_bandwidth_t bw)
311 u32 adc_freq, freq_cw;
315 for (j = 0; j < 3; j++) {
317 addr = 0xd140; /* fcw normal */
318 bfs_spec_inv = state->config.rf_spec_inv ? -1 : 1;
320 addr = 0x9be7; /* fcw dummy ram */
321 bfs_spec_inv = state->config.rf_spec_inv ? -1 : 1;
323 addr = 0x9bea; /* fcw inverted */
324 bfs_spec_inv = state->config.rf_spec_inv ? 1 : -1;
327 adc_freq = state->config.adc_clock * 1000;
328 if_sample_freq = state->config.tuner_if * 1000;
330 /* TDA18271 uses different sampling freq for every bw */
331 if (state->config.tuner == AF9013_TUNER_TDA18271) {
333 case BANDWIDTH_6_MHZ:
334 if_sample_freq = 3300000; /* 3.3 MHz */
336 case BANDWIDTH_7_MHZ:
337 if_sample_freq = 3500000; /* 3.5 MHz */
339 case BANDWIDTH_8_MHZ:
341 if_sample_freq = 4000000; /* 4.0 MHz */
344 } else if (state->config.tuner == AF9013_TUNER_TDA18218) {
346 case BANDWIDTH_6_MHZ:
347 if_sample_freq = 3000000; /* 3 MHz */
349 case BANDWIDTH_7_MHZ:
350 if_sample_freq = 3500000; /* 3.5 MHz */
352 case BANDWIDTH_8_MHZ:
354 if_sample_freq = 4000000; /* 4 MHz */
359 while (if_sample_freq > (adc_freq / 2))
360 if_sample_freq = if_sample_freq - adc_freq;
362 if (if_sample_freq >= 0)
363 bfs_spec_inv = bfs_spec_inv * (-1);
365 if_sample_freq = if_sample_freq * (-1);
367 freq_cw = af913_div(if_sample_freq, adc_freq, 23ul);
369 if (bfs_spec_inv == -1)
370 freq_cw = 0x00800000 - freq_cw;
372 buf[0] = (u8) ((freq_cw & 0x000000ff));
373 buf[1] = (u8) ((freq_cw & 0x0000ff00) >> 8);
374 buf[2] = (u8) ((freq_cw & 0x007f0000) >> 16);
377 deb_info("%s: freq_cw:", __func__);
378 debug_dump(buf, sizeof(buf), deb_info);
381 for (i = 0; i < sizeof(buf); i++) {
382 ret = af9013_write_reg(state, addr++, buf[i]);
391 static int af9013_set_ofdm_params(struct af9013_state *state,
392 struct dvb_ofdm_parameters *params, u8 *auto_mode)
395 u8 i, buf[3] = {0, 0, 0};
396 *auto_mode = 0; /* set if parameters are requested to auto set */
398 /* Try auto-detect transmission parameters in case of AUTO requested or
399 garbage parameters given by application for compatibility.
400 MPlayer seems to provide garbage parameters currently. */
402 switch (params->transmission_mode) {
403 case TRANSMISSION_MODE_AUTO:
405 case TRANSMISSION_MODE_2K:
407 case TRANSMISSION_MODE_8K:
411 deb_info("%s: invalid transmission_mode\n", __func__);
415 switch (params->guard_interval) {
416 case GUARD_INTERVAL_AUTO:
418 case GUARD_INTERVAL_1_32:
420 case GUARD_INTERVAL_1_16:
423 case GUARD_INTERVAL_1_8:
426 case GUARD_INTERVAL_1_4:
430 deb_info("%s: invalid guard_interval\n", __func__);
434 switch (params->hierarchy_information) {
449 deb_info("%s: invalid hierarchy_information\n", __func__);
453 switch (params->constellation) {
465 deb_info("%s: invalid constellation\n", __func__);
469 /* Use HP. How and which case we can switch to LP? */
472 switch (params->code_rate_HP) {
490 deb_info("%s: invalid code_rate_HP\n", __func__);
494 switch (params->code_rate_LP) {
496 /* if HIERARCHY_NONE and FEC_NONE then LP FEC is set to FEC_AUTO
497 by dvb_frontend.c for compatibility */
498 if (params->hierarchy_information != HIERARCHY_NONE)
515 if (params->hierarchy_information == HIERARCHY_AUTO)
518 deb_info("%s: invalid code_rate_LP\n", __func__);
522 switch (params->bandwidth) {
523 case BANDWIDTH_6_MHZ:
525 case BANDWIDTH_7_MHZ:
528 case BANDWIDTH_8_MHZ:
532 deb_info("%s: invalid bandwidth\n", __func__);
533 buf[1] |= (2 << 2); /* cannot auto-detect BW, try 8 MHz */
537 for (i = 0; i < sizeof(buf); i++) {
538 ret = af9013_write_reg(state, 0xd3c0 + i, buf[i]);
546 static int af9013_reset(struct af9013_state *state, u8 sleep)
550 deb_info("%s\n", __func__);
552 /* enable OFDM reset */
553 ret = af9013_write_reg_bits(state, 0xd417, 4, 1, 1);
557 /* start reset mechanism */
558 ret = af9013_write_reg(state, 0xaeff, 1);
562 /* reset is done when bit 1 is set */
563 for (i = 0; i < 150; i++) {
564 ret = af9013_read_reg_bits(state, 0xd417, 1, 1, &tmp);
568 break; /* reset done */
574 /* don't clear reset when going to sleep */
576 /* clear OFDM reset */
577 ret = af9013_write_reg_bits(state, 0xd417, 1, 1, 0);
581 /* disable OFDM reset */
582 ret = af9013_write_reg_bits(state, 0xd417, 4, 1, 0);
588 static int af9013_power_ctrl(struct af9013_state *state, u8 onoff)
591 deb_info("%s: onoff:%d\n", __func__, onoff);
595 ret = af9013_write_reg_bits(state, 0xd73a, 3, 1, 0);
598 ret = af9013_write_reg_bits(state, 0xd417, 1, 1, 0);
601 ret = af9013_write_reg_bits(state, 0xd417, 4, 1, 0);
604 ret = af9013_reset(state, 1);
607 ret = af9013_write_reg_bits(state, 0xd73a, 3, 1, 1);
613 static int af9013_lock_led(struct af9013_state *state, u8 onoff)
615 deb_info("%s: onoff:%d\n", __func__, onoff);
617 return af9013_write_reg_bits(state, 0xd730, 0, 1, onoff);
620 static int af9013_set_frontend(struct dvb_frontend *fe,
621 struct dvb_frontend_parameters *params)
623 struct af9013_state *state = fe->demodulator_priv;
625 u8 auto_mode; /* auto set TPS */
627 deb_info("%s: freq:%d bw:%d\n", __func__, params->frequency,
628 params->u.ofdm.bandwidth);
630 state->frequency = params->frequency;
633 if (fe->ops.tuner_ops.set_params)
634 fe->ops.tuner_ops.set_params(fe, params);
636 /* program CFOE coefficients */
637 ret = af9013_set_coeff(state, params->u.ofdm.bandwidth);
641 /* program frequency control */
642 ret = af9013_set_freq_ctrl(state, params->u.ofdm.bandwidth);
646 /* clear TPS lock flag (inverted flag) */
647 ret = af9013_write_reg_bits(state, 0xd330, 3, 1, 1);
651 /* clear MPEG2 lock flag */
652 ret = af9013_write_reg_bits(state, 0xd507, 6, 1, 0);
656 /* empty channel function */
657 ret = af9013_write_reg_bits(state, 0x9bfe, 0, 1, 0);
661 /* empty DVB-T channel function */
662 ret = af9013_write_reg_bits(state, 0x9bc2, 0, 1, 0);
666 /* program TPS and bandwidth, check if auto mode needed */
667 ret = af9013_set_ofdm_params(state, ¶ms->u.ofdm, &auto_mode);
672 /* clear easy mode flag */
673 ret = af9013_write_reg(state, 0xaefd, 0);
674 deb_info("%s: auto TPS\n", __func__);
676 /* set easy mode flag */
677 ret = af9013_write_reg(state, 0xaefd, 1);
680 ret = af9013_write_reg(state, 0xaefe, 0);
681 deb_info("%s: manual TPS\n", __func__);
686 /* everything is set, lets try to receive channel - OFSM GO! */
687 ret = af9013_write_reg(state, 0xffff, 0);
695 static int af9013_get_frontend(struct dvb_frontend *fe,
696 struct dvb_frontend_parameters *p)
698 struct af9013_state *state = fe->demodulator_priv;
701 deb_info("%s\n", __func__);
703 /* read TPS registers */
704 for (i = 0; i < 3; i++) {
705 ret = af9013_read_reg(state, 0xd3c0 + i, &buf[i]);
710 switch ((buf[1] >> 6) & 3) {
712 p->u.ofdm.constellation = QPSK;
715 p->u.ofdm.constellation = QAM_16;
718 p->u.ofdm.constellation = QAM_64;
722 switch ((buf[0] >> 0) & 3) {
724 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_2K;
727 p->u.ofdm.transmission_mode = TRANSMISSION_MODE_8K;
730 switch ((buf[0] >> 2) & 3) {
732 p->u.ofdm.guard_interval = GUARD_INTERVAL_1_32;
735 p->u.ofdm.guard_interval = GUARD_INTERVAL_1_16;
738 p->u.ofdm.guard_interval = GUARD_INTERVAL_1_8;
741 p->u.ofdm.guard_interval = GUARD_INTERVAL_1_4;
745 switch ((buf[0] >> 4) & 7) {
747 p->u.ofdm.hierarchy_information = HIERARCHY_NONE;
750 p->u.ofdm.hierarchy_information = HIERARCHY_1;
753 p->u.ofdm.hierarchy_information = HIERARCHY_2;
756 p->u.ofdm.hierarchy_information = HIERARCHY_4;
760 switch ((buf[2] >> 0) & 7) {
762 p->u.ofdm.code_rate_HP = FEC_1_2;
765 p->u.ofdm.code_rate_HP = FEC_2_3;
768 p->u.ofdm.code_rate_HP = FEC_3_4;
771 p->u.ofdm.code_rate_HP = FEC_5_6;
774 p->u.ofdm.code_rate_HP = FEC_7_8;
778 switch ((buf[2] >> 3) & 7) {
780 p->u.ofdm.code_rate_LP = FEC_1_2;
783 p->u.ofdm.code_rate_LP = FEC_2_3;
786 p->u.ofdm.code_rate_LP = FEC_3_4;
789 p->u.ofdm.code_rate_LP = FEC_5_6;
792 p->u.ofdm.code_rate_LP = FEC_7_8;
796 switch ((buf[1] >> 2) & 3) {
798 p->u.ofdm.bandwidth = BANDWIDTH_6_MHZ;
801 p->u.ofdm.bandwidth = BANDWIDTH_7_MHZ;
804 p->u.ofdm.bandwidth = BANDWIDTH_8_MHZ;
808 p->inversion = INVERSION_AUTO;
809 p->frequency = state->frequency;
815 static int af9013_update_ber_unc(struct dvb_frontend *fe)
817 struct af9013_state *state = fe->demodulator_priv;
820 u32 error_bit_count = 0;
821 u32 total_bit_count = 0;
822 u32 abort_packet_count = 0;
826 /* check if error bit count is ready */
827 ret = af9013_read_reg_bits(state, 0xd391, 4, 1, &buf[0]);
833 /* get RSD packet abort count */
834 for (i = 0; i < 2; i++) {
835 ret = af9013_read_reg(state, 0xd38a + i, &buf[i]);
839 abort_packet_count = (buf[1] << 8) + buf[0];
841 /* get error bit count */
842 for (i = 0; i < 3; i++) {
843 ret = af9013_read_reg(state, 0xd387 + i, &buf[i]);
847 error_bit_count = (buf[2] << 16) + (buf[1] << 8) + buf[0];
848 error_bit_count = error_bit_count - abort_packet_count * 8 * 8;
850 /* get used RSD counting period (10000 RSD packets used) */
851 for (i = 0; i < 2; i++) {
852 ret = af9013_read_reg(state, 0xd385 + i, &buf[i]);
856 total_bit_count = (buf[1] << 8) + buf[0];
857 total_bit_count = total_bit_count - abort_packet_count;
858 total_bit_count = total_bit_count * 204 * 8;
861 state->ber = error_bit_count * 1000000000 / total_bit_count;
863 state->ucblocks += abort_packet_count;
865 deb_info("%s: err bits:%d total bits:%d abort count:%d\n", __func__,
866 error_bit_count, total_bit_count, abort_packet_count);
868 /* set BER counting range */
869 ret = af9013_write_reg(state, 0xd385, 10000 & 0xff);
872 ret = af9013_write_reg(state, 0xd386, 10000 >> 8);
875 /* reset and start BER counter */
876 ret = af9013_write_reg_bits(state, 0xd391, 4, 1, 1);
885 static int af9013_update_snr(struct dvb_frontend *fe)
887 struct af9013_state *state = fe->demodulator_priv;
891 struct snr_table *uninitialized_var(snr_table);
893 /* check if quantizer ready (for snr) */
894 ret = af9013_read_reg_bits(state, 0xd2e1, 3, 1, &buf[0]);
898 /* quantizer ready - read it */
899 for (i = 0; i < 3; i++) {
900 ret = af9013_read_reg(state, 0xd2e3 + i, &buf[i]);
904 quant = (buf[2] << 16) + (buf[1] << 8) + buf[0];
906 /* read current constellation */
907 ret = af9013_read_reg(state, 0xd3c1, &buf[0]);
911 switch ((buf[0] >> 6) & 3) {
913 len = ARRAY_SIZE(qpsk_snr_table);
914 snr_table = qpsk_snr_table;
917 len = ARRAY_SIZE(qam16_snr_table);
918 snr_table = qam16_snr_table;
921 len = ARRAY_SIZE(qam64_snr_table);
922 snr_table = qam64_snr_table;
930 for (i = 0; i < len; i++) {
931 if (quant < snr_table[i].val) {
932 state->snr = snr_table[i].snr * 10;
938 /* set quantizer super frame count */
939 ret = af9013_write_reg(state, 0xd2e2, 1);
943 /* check quantizer availability */
944 for (i = 0; i < 10; i++) {
946 ret = af9013_read_reg_bits(state, 0xd2e6, 0, 1,
954 /* reset quantizer */
955 ret = af9013_write_reg_bits(state, 0xd2e1, 3, 1, 1);
964 static int af9013_update_signal_strength(struct dvb_frontend *fe)
966 struct af9013_state *state = fe->demodulator_priv;
971 deb_info("%s\n", __func__);
973 if (state->signal_strength_en) {
974 ret = af9013_read_reg(state, 0xd07c, &rf_gain);
977 ret = af9013_read_reg(state, 0xd07d, &if_gain);
980 signal_strength = (0xffff / \
981 (9 * (state->rf_50 + state->if_50) - \
982 11 * (state->rf_80 + state->if_80))) * \
983 (10 * (rf_gain + if_gain) - \
984 11 * (state->rf_80 + state->if_80));
985 if (signal_strength < 0)
987 else if (signal_strength > 0xffff)
988 signal_strength = 0xffff;
990 state->signal_strength = signal_strength;
992 state->signal_strength = 0;
999 static int af9013_update_statistics(struct dvb_frontend *fe)
1001 struct af9013_state *state = fe->demodulator_priv;
1004 if (time_before(jiffies, state->next_statistics_check))
1007 /* set minimum statistic update interval */
1008 state->next_statistics_check = jiffies + msecs_to_jiffies(1200);
1010 ret = af9013_update_signal_strength(fe);
1013 ret = af9013_update_snr(fe);
1016 ret = af9013_update_ber_unc(fe);
1024 static int af9013_get_tune_settings(struct dvb_frontend *fe,
1025 struct dvb_frontend_tune_settings *fesettings)
1027 fesettings->min_delay_ms = 800;
1028 fesettings->step_size = 0;
1029 fesettings->max_drift = 0;
1034 static int af9013_read_status(struct dvb_frontend *fe, fe_status_t *status)
1036 struct af9013_state *state = fe->demodulator_priv;
1042 ret = af9013_read_reg_bits(state, 0xd507, 6, 1, &tmp);
1046 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
1047 FE_HAS_SYNC | FE_HAS_LOCK;
1051 ret = af9013_read_reg_bits(state, 0xd330, 3, 1, &tmp);
1055 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
1061 ret = af9013_read_reg_bits(state, 0xd333, 7, 1, &tmp);
1065 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
1070 ret = af9013_read_reg_bits(state, 0xd334, 6, 1, &tmp);
1074 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
1079 ret = af9013_read_reg_bits(state, 0xd1a0, 6, 1, &tmp);
1083 *status |= FE_HAS_SIGNAL;
1086 ret = af9013_update_statistics(fe);
1093 static int af9013_read_ber(struct dvb_frontend *fe, u32 *ber)
1095 struct af9013_state *state = fe->demodulator_priv;
1097 ret = af9013_update_statistics(fe);
1102 static int af9013_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
1104 struct af9013_state *state = fe->demodulator_priv;
1106 ret = af9013_update_statistics(fe);
1107 *strength = state->signal_strength;
1111 static int af9013_read_snr(struct dvb_frontend *fe, u16 *snr)
1113 struct af9013_state *state = fe->demodulator_priv;
1115 ret = af9013_update_statistics(fe);
1120 static int af9013_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1122 struct af9013_state *state = fe->demodulator_priv;
1124 ret = af9013_update_statistics(fe);
1125 *ucblocks = state->ucblocks;
1129 static int af9013_sleep(struct dvb_frontend *fe)
1131 struct af9013_state *state = fe->demodulator_priv;
1133 deb_info("%s\n", __func__);
1135 ret = af9013_lock_led(state, 0);
1139 ret = af9013_power_ctrl(state, 0);
1144 static int af9013_init(struct dvb_frontend *fe)
1146 struct af9013_state *state = fe->demodulator_priv;
1149 struct regdesc *init;
1150 deb_info("%s\n", __func__);
1153 ret = af9013_reset(state, 0);
1158 ret = af9013_power_ctrl(state, 1);
1163 ret = af9013_write_reg(state, 0xd73a, 0xa4);
1167 /* write API version to firmware */
1168 for (i = 0; i < sizeof(state->config.api_version); i++) {
1169 ret = af9013_write_reg(state, 0x9bf2 + i,
1170 state->config.api_version[i]);
1175 /* program ADC control */
1176 ret = af9013_set_adc_ctrl(state);
1180 /* set I2C master clock */
1181 ret = af9013_write_reg(state, 0xd416, 0x14);
1186 ret = af9013_write_reg_bits(state, 0xd700, 1, 1, 1);
1190 /* set no trigger */
1191 ret = af9013_write_reg_bits(state, 0xd700, 2, 1, 0);
1195 /* set read-update bit for constellation */
1196 ret = af9013_write_reg_bits(state, 0xd371, 1, 1, 1);
1200 /* enable FEC monitor */
1201 ret = af9013_write_reg_bits(state, 0xd392, 1, 1, 1);
1205 /* load OFSM settings */
1206 deb_info("%s: load ofsm settings\n", __func__);
1207 len = ARRAY_SIZE(ofsm_init);
1209 for (i = 0; i < len; i++) {
1210 ret = af9013_write_reg_bits(state, init[i].addr, init[i].pos,
1211 init[i].len, init[i].val);
1216 /* load tuner specific settings */
1217 deb_info("%s: load tuner specific settings\n", __func__);
1218 switch (state->config.tuner) {
1219 case AF9013_TUNER_MXL5003D:
1220 len = ARRAY_SIZE(tuner_init_mxl5003d);
1221 init = tuner_init_mxl5003d;
1223 case AF9013_TUNER_MXL5005D:
1224 case AF9013_TUNER_MXL5005R:
1225 case AF9013_TUNER_MXL5007T:
1226 len = ARRAY_SIZE(tuner_init_mxl5005);
1227 init = tuner_init_mxl5005;
1229 case AF9013_TUNER_ENV77H11D5:
1230 len = ARRAY_SIZE(tuner_init_env77h11d5);
1231 init = tuner_init_env77h11d5;
1233 case AF9013_TUNER_MT2060:
1234 len = ARRAY_SIZE(tuner_init_mt2060);
1235 init = tuner_init_mt2060;
1237 case AF9013_TUNER_MC44S803:
1238 len = ARRAY_SIZE(tuner_init_mc44s803);
1239 init = tuner_init_mc44s803;
1241 case AF9013_TUNER_QT1010:
1242 case AF9013_TUNER_QT1010A:
1243 len = ARRAY_SIZE(tuner_init_qt1010);
1244 init = tuner_init_qt1010;
1246 case AF9013_TUNER_MT2060_2:
1247 len = ARRAY_SIZE(tuner_init_mt2060_2);
1248 init = tuner_init_mt2060_2;
1250 case AF9013_TUNER_TDA18271:
1251 case AF9013_TUNER_TDA18218:
1252 len = ARRAY_SIZE(tuner_init_tda18271);
1253 init = tuner_init_tda18271;
1255 case AF9013_TUNER_UNKNOWN:
1257 len = ARRAY_SIZE(tuner_init_unknown);
1258 init = tuner_init_unknown;
1262 for (i = 0; i < len; i++) {
1263 ret = af9013_write_reg_bits(state, init[i].addr, init[i].pos,
1264 init[i].len, init[i].val);
1270 deb_info("%s: setting ts mode\n", __func__);
1271 tmp0 = 0; /* parallel mode */
1272 tmp1 = 0; /* serial mode */
1273 switch (state->config.output_mode) {
1274 case AF9013_OUTPUT_MODE_PARALLEL:
1277 case AF9013_OUTPUT_MODE_SERIAL:
1280 case AF9013_OUTPUT_MODE_USB:
1281 /* usb mode for AF9015 */
1285 ret = af9013_write_reg_bits(state, 0xd500, 1, 1, tmp0); /* parallel */
1288 ret = af9013_write_reg_bits(state, 0xd500, 2, 1, tmp1); /* serial */
1292 /* enable lock led */
1293 ret = af9013_lock_led(state, 1);
1297 /* read values needed for signal strength calculation */
1298 ret = af9013_read_reg_bits(state, 0x9bee, 0, 1,
1299 &state->signal_strength_en);
1303 if (state->signal_strength_en) {
1304 ret = af9013_read_reg(state, 0x9bbd, &state->rf_50);
1307 ret = af9013_read_reg(state, 0x9bd0, &state->rf_80);
1310 ret = af9013_read_reg(state, 0x9be2, &state->if_50);
1313 ret = af9013_read_reg(state, 0x9be4, &state->if_80);
1322 static struct dvb_frontend_ops af9013_ops;
1324 static int af9013_download_firmware(struct af9013_state *state)
1326 int i, len, packets, remainder, ret;
1327 const struct firmware *fw;
1328 u16 addr = 0x5100; /* firmware start address */
1333 u8 *fw_file = AF9013_DEFAULT_FIRMWARE;
1336 /* check whether firmware is already running */
1337 ret = af9013_read_reg(state, 0x98be, &val);
1341 deb_info("%s: firmware status:%02x\n", __func__, val);
1343 if (val == 0x0c) /* fw is running, no need for download */
1346 info("found a '%s' in cold state, will try to load a firmware",
1347 af9013_ops.info.name);
1349 /* request the firmware, this will block and timeout */
1350 ret = request_firmware(&fw, fw_file, state->i2c->dev.parent);
1352 err("did not find the firmware file. (%s) "
1353 "Please see linux/Documentation/dvb/ for more details" \
1354 " on firmware-problems. (%d)",
1359 info("downloading firmware from file '%s'", fw_file);
1362 for (i = 0; i < fw->size; i++)
1363 checksum += fw->data[i];
1365 fw_params[0] = checksum >> 8;
1366 fw_params[1] = checksum & 0xff;
1367 fw_params[2] = fw->size >> 8;
1368 fw_params[3] = fw->size & 0xff;
1370 /* write fw checksum & size */
1371 ret = af9013_write_ofsm_regs(state, 0x50fc,
1372 fw_params, sizeof(fw_params));
1376 #define FW_PACKET_MAX_DATA 16
1378 packets = fw->size / FW_PACKET_MAX_DATA;
1379 remainder = fw->size % FW_PACKET_MAX_DATA;
1380 len = FW_PACKET_MAX_DATA;
1381 for (i = 0; i <= packets; i++) {
1382 if (i == packets) /* set size of the last packet */
1385 data = (u8 *)(fw->data + i * FW_PACKET_MAX_DATA);
1386 ret = af9013_write_ofsm_regs(state, addr, data, len);
1387 addr += FW_PACKET_MAX_DATA;
1390 err("firmware download failed at %d with %d", i, ret);
1395 /* request boot firmware */
1396 ret = af9013_write_reg(state, 0xe205, 1);
1400 for (i = 0; i < 15; i++) {
1403 /* check firmware status */
1404 ret = af9013_read_reg(state, 0x98be, &val);
1408 deb_info("%s: firmware status:%02x\n", __func__, val);
1410 if (val == 0x0c || val == 0x04) /* success or fail */
1415 err("firmware did not run");
1417 } else if (val != 0x0c) {
1418 err("firmware boot timeout");
1423 release_firmware(fw);
1427 info("found a '%s' in warm state.", af9013_ops.info.name);
1431 static int af9013_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
1434 struct af9013_state *state = fe->demodulator_priv;
1435 deb_info("%s: enable:%d\n", __func__, enable);
1437 if (state->config.output_mode == AF9013_OUTPUT_MODE_USB)
1438 ret = af9013_write_reg_bits(state, 0xd417, 3, 1, enable);
1440 ret = af9013_write_reg_bits(state, 0xd607, 2, 1, enable);
1445 static void af9013_release(struct dvb_frontend *fe)
1447 struct af9013_state *state = fe->demodulator_priv;
1451 static struct dvb_frontend_ops af9013_ops;
1453 struct dvb_frontend *af9013_attach(const struct af9013_config *config,
1454 struct i2c_adapter *i2c)
1457 struct af9013_state *state = NULL;
1460 /* allocate memory for the internal state */
1461 state = kzalloc(sizeof(struct af9013_state), GFP_KERNEL);
1465 /* setup the state */
1467 memcpy(&state->config, config, sizeof(struct af9013_config));
1470 ret = af9013_read_reg_bits(state, 0xd733, 4, 4, &buf[2]);
1475 for (i = 0; i < 2; i++) {
1476 ret = af9013_read_reg(state, 0x116b + i, &buf[i]);
1480 deb_info("%s: chip version:%d ROM version:%d.%d\n", __func__,
1481 buf[2], buf[0], buf[1]);
1483 /* download firmware */
1484 if (state->config.output_mode != AF9013_OUTPUT_MODE_USB) {
1485 ret = af9013_download_firmware(state);
1490 /* firmware version */
1491 for (i = 0; i < 4; i++) {
1492 ret = af9013_read_reg(state, 0x5103 + i, &buf[i]);
1496 info("firmware version:%d.%d.%d.%d", buf[0], buf[1], buf[2], buf[3]);
1498 /* settings for mp2if */
1499 if (state->config.output_mode == AF9013_OUTPUT_MODE_USB) {
1500 /* AF9015 split PSB to 1.5k + 0.5k */
1501 ret = af9013_write_reg_bits(state, 0xd50b, 2, 1, 1);
1503 /* AF9013 change the output bit to data7 */
1504 ret = af9013_write_reg_bits(state, 0xd500, 3, 1, 1);
1507 /* AF9013 set mpeg to full speed */
1508 ret = af9013_write_reg_bits(state, 0xd502, 4, 1, 1);
1512 ret = af9013_write_reg_bits(state, 0xd520, 4, 1, 1);
1517 for (i = 0; i < sizeof(state->config.gpio); i++) {
1518 ret = af9013_set_gpio(state, i, state->config.gpio[i]);
1523 /* create dvb_frontend */
1524 memcpy(&state->frontend.ops, &af9013_ops,
1525 sizeof(struct dvb_frontend_ops));
1526 state->frontend.demodulator_priv = state;
1528 return &state->frontend;
1533 EXPORT_SYMBOL(af9013_attach);
1535 static struct dvb_frontend_ops af9013_ops = {
1537 .name = "Afatech AF9013 DVB-T",
1539 .frequency_min = 174000000,
1540 .frequency_max = 862000000,
1541 .frequency_stepsize = 250000,
1542 .frequency_tolerance = 0,
1544 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1545 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1546 FE_CAN_QPSK | FE_CAN_QAM_16 |
1547 FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
1548 FE_CAN_TRANSMISSION_MODE_AUTO |
1549 FE_CAN_GUARD_INTERVAL_AUTO |
1550 FE_CAN_HIERARCHY_AUTO |
1555 .release = af9013_release,
1556 .init = af9013_init,
1557 .sleep = af9013_sleep,
1558 .i2c_gate_ctrl = af9013_i2c_gate_ctrl,
1560 .set_frontend = af9013_set_frontend,
1561 .get_frontend = af9013_get_frontend,
1563 .get_tune_settings = af9013_get_tune_settings,
1565 .read_status = af9013_read_status,
1566 .read_ber = af9013_read_ber,
1567 .read_signal_strength = af9013_read_signal_strength,
1568 .read_snr = af9013_read_snr,
1569 .read_ucblocks = af9013_read_ucblocks,
1572 module_param_named(debug, af9013_debug, int, 0644);
1573 MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
1575 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1576 MODULE_DESCRIPTION("Afatech AF9013 DVB-T demodulator driver");
1577 MODULE_LICENSE("GPL");