diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/dvb-frontends/dib3000mc.c | 975 |
1 files changed, 975 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/dib3000mc.c b/drivers/media/dvb-frontends/dib3000mc.c new file mode 100644 index 000000000..c2fca8289 --- /dev/null +++ b/drivers/media/dvb-frontends/dib3000mc.c @@ -0,0 +1,975 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for DiBcom DiB3000MC/P-demodulator. + * + * Copyright (C) 2004-7 DiBcom (http://www.dibcom.fr/) + * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de) + * + * This code is partially based on the previous dib3000mc.c . + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/i2c.h> + +#include <media/dvb_frontend.h> + +#include "dib3000mc.h" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "turn on debugging (default: 0)"); + +static int buggy_sfn_workaround; +module_param(buggy_sfn_workaround, int, 0644); +MODULE_PARM_DESC(buggy_sfn_workaround, "Enable work-around for buggy SFNs (default: 0)"); + +#define dprintk(fmt, arg...) do { \ + if (debug) \ + printk(KERN_DEBUG pr_fmt("%s: " fmt), \ + __func__, ##arg); \ +} while (0) + +struct dib3000mc_state { + struct dvb_frontend demod; + struct dib3000mc_config *cfg; + + u8 i2c_addr; + struct i2c_adapter *i2c_adap; + + struct dibx000_i2c_master i2c_master; + + u32 timf; + + u32 current_bandwidth; + + u16 dev_id; + + u8 sfn_workaround_active :1; +}; + +static u16 dib3000mc_read_word(struct dib3000mc_state *state, u16 reg) +{ + struct i2c_msg msg[2] = { + { .addr = state->i2c_addr >> 1, .flags = 0, .len = 2 }, + { .addr = state->i2c_addr >> 1, .flags = I2C_M_RD, .len = 2 }, + }; + u16 word; + u8 *b; + + b = kmalloc(4, GFP_KERNEL); + if (!b) + return 0; + + b[0] = (reg >> 8) | 0x80; + b[1] = reg; + b[2] = 0; + b[3] = 0; + + msg[0].buf = b; + msg[1].buf = b + 2; + + if (i2c_transfer(state->i2c_adap, msg, 2) != 2) + dprintk("i2c read error on %d\n",reg); + + word = (b[2] << 8) | b[3]; + kfree(b); + + return word; +} + +static int dib3000mc_write_word(struct dib3000mc_state *state, u16 reg, u16 val) +{ + struct i2c_msg msg = { + .addr = state->i2c_addr >> 1, .flags = 0, .len = 4 + }; + int rc; + u8 *b; + + b = kmalloc(4, GFP_KERNEL); + if (!b) + return -ENOMEM; + + b[0] = reg >> 8; + b[1] = reg; + b[2] = val >> 8; + b[3] = val; + + msg.buf = b; + + rc = i2c_transfer(state->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0; + kfree(b); + + return rc; +} + +static int dib3000mc_identify(struct dib3000mc_state *state) +{ + u16 value; + if ((value = dib3000mc_read_word(state, 1025)) != 0x01b3) { + dprintk("-E- DiB3000MC/P: wrong Vendor ID (read=0x%x)\n",value); + return -EREMOTEIO; + } + + value = dib3000mc_read_word(state, 1026); + if (value != 0x3001 && value != 0x3002) { + dprintk("-E- DiB3000MC/P: wrong Device ID (%x)\n",value); + return -EREMOTEIO; + } + state->dev_id = value; + + dprintk("-I- found DiB3000MC/P: %x\n",state->dev_id); + + return 0; +} + +static int dib3000mc_set_timing(struct dib3000mc_state *state, s16 nfft, u32 bw, u8 update_offset) +{ + u32 timf; + + if (state->timf == 0) { + timf = 1384402; // default value for 8MHz + if (update_offset) + msleep(200); // first time we do an update + } else + timf = state->timf; + + timf *= (bw / 1000); + + if (update_offset) { + s16 tim_offs = dib3000mc_read_word(state, 416); + + if (tim_offs & 0x2000) + tim_offs -= 0x4000; + + if (nfft == TRANSMISSION_MODE_2K) + tim_offs *= 4; + + timf += tim_offs; + state->timf = timf / (bw / 1000); + } + + dprintk("timf: %d\n", timf); + + dib3000mc_write_word(state, 23, (u16) (timf >> 16)); + dib3000mc_write_word(state, 24, (u16) (timf ) & 0xffff); + + return 0; +} + +static int dib3000mc_setup_pwm_state(struct dib3000mc_state *state) +{ + u16 reg_51, reg_52 = state->cfg->agc->setup & 0xfefb; + if (state->cfg->pwm3_inversion) { + reg_51 = (2 << 14) | (0 << 10) | (7 << 6) | (2 << 2) | (2 << 0); + reg_52 |= (1 << 2); + } else { + reg_51 = (2 << 14) | (4 << 10) | (7 << 6) | (2 << 2) | (2 << 0); + reg_52 |= (1 << 8); + } + dib3000mc_write_word(state, 51, reg_51); + dib3000mc_write_word(state, 52, reg_52); + + if (state->cfg->use_pwm3) + dib3000mc_write_word(state, 245, (1 << 3) | (1 << 0)); + else + dib3000mc_write_word(state, 245, 0); + + dib3000mc_write_word(state, 1040, 0x3); + return 0; +} + +static int dib3000mc_set_output_mode(struct dib3000mc_state *state, int mode) +{ + int ret = 0; + u16 fifo_threshold = 1792; + u16 outreg = 0; + u16 outmode = 0; + u16 elecout = 1; + u16 smo_reg = dib3000mc_read_word(state, 206) & 0x0010; /* keep the pid_parse bit */ + + dprintk("-I- Setting output mode for demod %p to %d\n", + &state->demod, mode); + + switch (mode) { + case OUTMODE_HIGH_Z: // disable + elecout = 0; + break; + case OUTMODE_MPEG2_PAR_GATED_CLK: // STBs with parallel gated clock + outmode = 0; + break; + case OUTMODE_MPEG2_PAR_CONT_CLK: // STBs with parallel continues clock + outmode = 1; + break; + case OUTMODE_MPEG2_SERIAL: // STBs with serial input + outmode = 2; + break; + case OUTMODE_MPEG2_FIFO: // e.g. USB feeding + elecout = 3; + /*ADDR @ 206 : + P_smo_error_discard [1;6:6] = 0 + P_smo_rs_discard [1;5:5] = 0 + P_smo_pid_parse [1;4:4] = 0 + P_smo_fifo_flush [1;3:3] = 0 + P_smo_mode [2;2:1] = 11 + P_smo_ovf_prot [1;0:0] = 0 + */ + smo_reg |= 3 << 1; + fifo_threshold = 512; + outmode = 5; + break; + case OUTMODE_DIVERSITY: + outmode = 4; + elecout = 1; + break; + default: + dprintk("Unhandled output_mode passed to be set for demod %p\n",&state->demod); + outmode = 0; + break; + } + + if ((state->cfg->output_mpeg2_in_188_bytes)) + smo_reg |= (1 << 5); // P_smo_rs_discard [1;5:5] = 1 + + outreg = dib3000mc_read_word(state, 244) & 0x07FF; + outreg |= (outmode << 11); + ret |= dib3000mc_write_word(state, 244, outreg); + ret |= dib3000mc_write_word(state, 206, smo_reg); /*smo_ mode*/ + ret |= dib3000mc_write_word(state, 207, fifo_threshold); /* synchronous fread */ + ret |= dib3000mc_write_word(state, 1040, elecout); /* P_out_cfg */ + return ret; +} + +static int dib3000mc_set_bandwidth(struct dib3000mc_state *state, u32 bw) +{ + u16 bw_cfg[6] = { 0 }; + u16 imp_bw_cfg[3] = { 0 }; + u16 reg; + +/* settings here are for 27.7MHz */ + switch (bw) { + case 8000: + bw_cfg[0] = 0x0019; bw_cfg[1] = 0x5c30; bw_cfg[2] = 0x0054; bw_cfg[3] = 0x88a0; bw_cfg[4] = 0x01a6; bw_cfg[5] = 0xab20; + imp_bw_cfg[0] = 0x04db; imp_bw_cfg[1] = 0x00db; imp_bw_cfg[2] = 0x00b7; + break; + + case 7000: + bw_cfg[0] = 0x001c; bw_cfg[1] = 0xfba5; bw_cfg[2] = 0x0060; bw_cfg[3] = 0x9c25; bw_cfg[4] = 0x01e3; bw_cfg[5] = 0x0cb7; + imp_bw_cfg[0] = 0x04c0; imp_bw_cfg[1] = 0x00c0; imp_bw_cfg[2] = 0x00a0; + break; + + case 6000: + bw_cfg[0] = 0x0021; bw_cfg[1] = 0xd040; bw_cfg[2] = 0x0070; bw_cfg[3] = 0xb62b; bw_cfg[4] = 0x0233; bw_cfg[5] = 0x8ed5; + imp_bw_cfg[0] = 0x04a5; imp_bw_cfg[1] = 0x00a5; imp_bw_cfg[2] = 0x0089; + break; + + case 5000: + bw_cfg[0] = 0x0028; bw_cfg[1] = 0x9380; bw_cfg[2] = 0x0087; bw_cfg[3] = 0x4100; bw_cfg[4] = 0x02a4; bw_cfg[5] = 0x4500; + imp_bw_cfg[0] = 0x0489; imp_bw_cfg[1] = 0x0089; imp_bw_cfg[2] = 0x0072; + break; + + default: return -EINVAL; + } + + for (reg = 6; reg < 12; reg++) + dib3000mc_write_word(state, reg, bw_cfg[reg - 6]); + dib3000mc_write_word(state, 12, 0x0000); + dib3000mc_write_word(state, 13, 0x03e8); + dib3000mc_write_word(state, 14, 0x0000); + dib3000mc_write_word(state, 15, 0x03f2); + dib3000mc_write_word(state, 16, 0x0001); + dib3000mc_write_word(state, 17, 0xb0d0); + // P_sec_len + dib3000mc_write_word(state, 18, 0x0393); + dib3000mc_write_word(state, 19, 0x8700); + + for (reg = 55; reg < 58; reg++) + dib3000mc_write_word(state, reg, imp_bw_cfg[reg - 55]); + + // Timing configuration + dib3000mc_set_timing(state, TRANSMISSION_MODE_2K, bw, 0); + + return 0; +} + +static u16 impulse_noise_val[29] = + +{ + 0x38, 0x6d9, 0x3f28, 0x7a7, 0x3a74, 0x196, 0x32a, 0x48c, 0x3ffe, 0x7f3, + 0x2d94, 0x76, 0x53d, 0x3ff8, 0x7e3, 0x3320, 0x76, 0x5b3, 0x3feb, 0x7d2, + 0x365e, 0x76, 0x48c, 0x3ffe, 0x5b3, 0x3feb, 0x76, 0x0000, 0xd +}; + +static void dib3000mc_set_impulse_noise(struct dib3000mc_state *state, u8 mode, s16 nfft) +{ + u16 i; + for (i = 58; i < 87; i++) + dib3000mc_write_word(state, i, impulse_noise_val[i-58]); + + if (nfft == TRANSMISSION_MODE_8K) { + dib3000mc_write_word(state, 58, 0x3b); + dib3000mc_write_word(state, 84, 0x00); + dib3000mc_write_word(state, 85, 0x8200); + } + + dib3000mc_write_word(state, 34, 0x1294); + dib3000mc_write_word(state, 35, 0x1ff8); + if (mode == 1) + dib3000mc_write_word(state, 55, dib3000mc_read_word(state, 55) | (1 << 10)); +} + +static int dib3000mc_init(struct dvb_frontend *demod) +{ + struct dib3000mc_state *state = demod->demodulator_priv; + struct dibx000_agc_config *agc = state->cfg->agc; + + // Restart Configuration + dib3000mc_write_word(state, 1027, 0x8000); + dib3000mc_write_word(state, 1027, 0x0000); + + // power up the demod + mobility configuration + dib3000mc_write_word(state, 140, 0x0000); + dib3000mc_write_word(state, 1031, 0); + + if (state->cfg->mobile_mode) { + dib3000mc_write_word(state, 139, 0x0000); + dib3000mc_write_word(state, 141, 0x0000); + dib3000mc_write_word(state, 175, 0x0002); + dib3000mc_write_word(state, 1032, 0x0000); + } else { + dib3000mc_write_word(state, 139, 0x0001); + dib3000mc_write_word(state, 141, 0x0000); + dib3000mc_write_word(state, 175, 0x0000); + dib3000mc_write_word(state, 1032, 0x012C); + } + dib3000mc_write_word(state, 1033, 0x0000); + + // P_clk_cfg + dib3000mc_write_word(state, 1037, 0x3130); + + // other configurations + + // P_ctrl_sfreq + dib3000mc_write_word(state, 33, (5 << 0)); + dib3000mc_write_word(state, 88, (1 << 10) | (0x10 << 0)); + + // Phase noise control + // P_fft_phacor_inh, P_fft_phacor_cpe, P_fft_powrange + dib3000mc_write_word(state, 99, (1 << 9) | (0x20 << 0)); + + if (state->cfg->phase_noise_mode == 0) + dib3000mc_write_word(state, 111, 0x00); + else + dib3000mc_write_word(state, 111, 0x02); + + // P_agc_global + dib3000mc_write_word(state, 50, 0x8000); + + // agc setup misc + dib3000mc_setup_pwm_state(state); + + // P_agc_counter_lock + dib3000mc_write_word(state, 53, 0x87); + // P_agc_counter_unlock + dib3000mc_write_word(state, 54, 0x87); + + /* agc */ + dib3000mc_write_word(state, 36, state->cfg->max_time); + dib3000mc_write_word(state, 37, (state->cfg->agc_command1 << 13) | (state->cfg->agc_command2 << 12) | (0x1d << 0)); + dib3000mc_write_word(state, 38, state->cfg->pwm3_value); + dib3000mc_write_word(state, 39, state->cfg->ln_adc_level); + + // set_agc_loop_Bw + dib3000mc_write_word(state, 40, 0x0179); + dib3000mc_write_word(state, 41, 0x03f0); + + dib3000mc_write_word(state, 42, agc->agc1_max); + dib3000mc_write_word(state, 43, agc->agc1_min); + dib3000mc_write_word(state, 44, agc->agc2_max); + dib3000mc_write_word(state, 45, agc->agc2_min); + dib3000mc_write_word(state, 46, (agc->agc1_pt1 << 8) | agc->agc1_pt2); + dib3000mc_write_word(state, 47, (agc->agc1_slope1 << 8) | agc->agc1_slope2); + dib3000mc_write_word(state, 48, (agc->agc2_pt1 << 8) | agc->agc2_pt2); + dib3000mc_write_word(state, 49, (agc->agc2_slope1 << 8) | agc->agc2_slope2); + +// Begin: TimeOut registers + // P_pha3_thres + dib3000mc_write_word(state, 110, 3277); + // P_timf_alpha = 6, P_corm_alpha = 6, P_corm_thres = 0x80 + dib3000mc_write_word(state, 26, 0x6680); + // lock_mask0 + dib3000mc_write_word(state, 1, 4); + // lock_mask1 + dib3000mc_write_word(state, 2, 4); + // lock_mask2 + dib3000mc_write_word(state, 3, 0x1000); + // P_search_maxtrial=1 + dib3000mc_write_word(state, 5, 1); + + dib3000mc_set_bandwidth(state, 8000); + + // div_lock_mask + dib3000mc_write_word(state, 4, 0x814); + + dib3000mc_write_word(state, 21, (1 << 9) | 0x164); + dib3000mc_write_word(state, 22, 0x463d); + + // Spurious rm cfg + // P_cspu_regul, P_cspu_win_cut + dib3000mc_write_word(state, 120, 0x200f); + // P_adp_selec_monit + dib3000mc_write_word(state, 134, 0); + + // Fec cfg + dib3000mc_write_word(state, 195, 0x10); + + // diversity register: P_dvsy_sync_wait.. + dib3000mc_write_word(state, 180, 0x2FF0); + + // Impulse noise configuration + dib3000mc_set_impulse_noise(state, 0, TRANSMISSION_MODE_8K); + + // output mode set-up + dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); + + /* close the i2c-gate */ + dib3000mc_write_word(state, 769, (1 << 7) ); + + return 0; +} + +static int dib3000mc_sleep(struct dvb_frontend *demod) +{ + struct dib3000mc_state *state = demod->demodulator_priv; + + dib3000mc_write_word(state, 1031, 0xFFFF); + dib3000mc_write_word(state, 1032, 0xFFFF); + dib3000mc_write_word(state, 1033, 0xFFF0); + + return 0; +} + +static void dib3000mc_set_adp_cfg(struct dib3000mc_state *state, s16 qam) +{ + u16 cfg[4] = { 0 },reg; + switch (qam) { + case QPSK: + cfg[0] = 0x099a; cfg[1] = 0x7fae; cfg[2] = 0x0333; cfg[3] = 0x7ff0; + break; + case QAM_16: + cfg[0] = 0x023d; cfg[1] = 0x7fdf; cfg[2] = 0x00a4; cfg[3] = 0x7ff0; + break; + case QAM_64: + cfg[0] = 0x0148; cfg[1] = 0x7ff0; cfg[2] = 0x00a4; cfg[3] = 0x7ff8; + break; + } + for (reg = 129; reg < 133; reg++) + dib3000mc_write_word(state, reg, cfg[reg - 129]); +} + +static void dib3000mc_set_channel_cfg(struct dib3000mc_state *state, + struct dtv_frontend_properties *ch, u16 seq) +{ + u16 value; + u32 bw = BANDWIDTH_TO_KHZ(ch->bandwidth_hz); + + dib3000mc_set_bandwidth(state, bw); + dib3000mc_set_timing(state, ch->transmission_mode, bw, 0); + +#if 1 + dib3000mc_write_word(state, 100, (16 << 6) + 9); +#else + if (boost) + dib3000mc_write_word(state, 100, (11 << 6) + 6); + else + dib3000mc_write_word(state, 100, (16 << 6) + 9); +#endif + + dib3000mc_write_word(state, 1027, 0x0800); + dib3000mc_write_word(state, 1027, 0x0000); + + //Default cfg isi offset adp + dib3000mc_write_word(state, 26, 0x6680); + dib3000mc_write_word(state, 29, 0x1273); + dib3000mc_write_word(state, 33, 5); + dib3000mc_set_adp_cfg(state, QAM_16); + dib3000mc_write_word(state, 133, 15564); + + dib3000mc_write_word(state, 12 , 0x0); + dib3000mc_write_word(state, 13 , 0x3e8); + dib3000mc_write_word(state, 14 , 0x0); + dib3000mc_write_word(state, 15 , 0x3f2); + + dib3000mc_write_word(state, 93,0); + dib3000mc_write_word(state, 94,0); + dib3000mc_write_word(state, 95,0); + dib3000mc_write_word(state, 96,0); + dib3000mc_write_word(state, 97,0); + dib3000mc_write_word(state, 98,0); + + dib3000mc_set_impulse_noise(state, 0, ch->transmission_mode); + + value = 0; + switch (ch->transmission_mode) { + case TRANSMISSION_MODE_2K: value |= (0 << 7); break; + default: + case TRANSMISSION_MODE_8K: value |= (1 << 7); break; + } + switch (ch->guard_interval) { + case GUARD_INTERVAL_1_32: value |= (0 << 5); break; + case GUARD_INTERVAL_1_16: value |= (1 << 5); break; + case GUARD_INTERVAL_1_4: value |= (3 << 5); break; + default: + case GUARD_INTERVAL_1_8: value |= (2 << 5); break; + } + switch (ch->modulation) { + case QPSK: value |= (0 << 3); break; + case QAM_16: value |= (1 << 3); break; + default: + case QAM_64: value |= (2 << 3); break; + } + switch (HIERARCHY_1) { + case HIERARCHY_2: value |= 2; break; + case HIERARCHY_4: value |= 4; break; + default: + case HIERARCHY_1: value |= 1; break; + } + dib3000mc_write_word(state, 0, value); + dib3000mc_write_word(state, 5, (1 << 8) | ((seq & 0xf) << 4)); + + value = 0; + if (ch->hierarchy == 1) + value |= (1 << 4); + if (1 == 1) + value |= 1; + switch ((ch->hierarchy == 0 || 1 == 1) ? ch->code_rate_HP : ch->code_rate_LP) { + case FEC_2_3: value |= (2 << 1); break; + case FEC_3_4: value |= (3 << 1); break; + case FEC_5_6: value |= (5 << 1); break; + case FEC_7_8: value |= (7 << 1); break; + default: + case FEC_1_2: value |= (1 << 1); break; + } + dib3000mc_write_word(state, 181, value); + + // diversity synchro delay add 50% SFN margin + switch (ch->transmission_mode) { + case TRANSMISSION_MODE_8K: value = 256; break; + case TRANSMISSION_MODE_2K: + default: value = 64; break; + } + switch (ch->guard_interval) { + case GUARD_INTERVAL_1_16: value *= 2; break; + case GUARD_INTERVAL_1_8: value *= 4; break; + case GUARD_INTERVAL_1_4: value *= 8; break; + default: + case GUARD_INTERVAL_1_32: value *= 1; break; + } + value <<= 4; + value |= dib3000mc_read_word(state, 180) & 0x000f; + dib3000mc_write_word(state, 180, value); + + // restart demod + value = dib3000mc_read_word(state, 0); + dib3000mc_write_word(state, 0, value | (1 << 9)); + dib3000mc_write_word(state, 0, value); + + msleep(30); + + dib3000mc_set_impulse_noise(state, state->cfg->impulse_noise_mode, ch->transmission_mode); +} + +static int dib3000mc_autosearch_start(struct dvb_frontend *demod) +{ + struct dtv_frontend_properties *chan = &demod->dtv_property_cache; + struct dib3000mc_state *state = demod->demodulator_priv; + u16 reg; +// u32 val; + struct dtv_frontend_properties schan; + + schan = *chan; + + /* TODO what is that ? */ + + /* a channel for autosearch */ + schan.transmission_mode = TRANSMISSION_MODE_8K; + schan.guard_interval = GUARD_INTERVAL_1_32; + schan.modulation = QAM_64; + schan.code_rate_HP = FEC_2_3; + schan.code_rate_LP = FEC_2_3; + schan.hierarchy = 0; + + dib3000mc_set_channel_cfg(state, &schan, 11); + + reg = dib3000mc_read_word(state, 0); + dib3000mc_write_word(state, 0, reg | (1 << 8)); + dib3000mc_read_word(state, 511); + dib3000mc_write_word(state, 0, reg); + + return 0; +} + +static int dib3000mc_autosearch_is_irq(struct dvb_frontend *demod) +{ + struct dib3000mc_state *state = demod->demodulator_priv; + u16 irq_pending = dib3000mc_read_word(state, 511); + + if (irq_pending & 0x1) // failed + return 1; + + if (irq_pending & 0x2) // succeeded + return 2; + + return 0; // still pending +} + +static int dib3000mc_tune(struct dvb_frontend *demod) +{ + struct dtv_frontend_properties *ch = &demod->dtv_property_cache; + struct dib3000mc_state *state = demod->demodulator_priv; + + // ** configure demod ** + dib3000mc_set_channel_cfg(state, ch, 0); + + // activates isi + if (state->sfn_workaround_active) { + dprintk("SFN workaround is active\n"); + dib3000mc_write_word(state, 29, 0x1273); + dib3000mc_write_word(state, 108, 0x4000); // P_pha3_force_pha_shift + } else { + dib3000mc_write_word(state, 29, 0x1073); + dib3000mc_write_word(state, 108, 0x0000); // P_pha3_force_pha_shift + } + + dib3000mc_set_adp_cfg(state, (u8)ch->modulation); + if (ch->transmission_mode == TRANSMISSION_MODE_8K) { + dib3000mc_write_word(state, 26, 38528); + dib3000mc_write_word(state, 33, 8); + } else { + dib3000mc_write_word(state, 26, 30336); + dib3000mc_write_word(state, 33, 6); + } + + if (dib3000mc_read_word(state, 509) & 0x80) + dib3000mc_set_timing(state, ch->transmission_mode, + BANDWIDTH_TO_KHZ(ch->bandwidth_hz), 1); + + return 0; +} + +struct i2c_adapter * dib3000mc_get_tuner_i2c_master(struct dvb_frontend *demod, int gating) +{ + struct dib3000mc_state *st = demod->demodulator_priv; + return dibx000_get_i2c_adapter(&st->i2c_master, DIBX000_I2C_INTERFACE_TUNER, gating); +} + +EXPORT_SYMBOL(dib3000mc_get_tuner_i2c_master); + +static int dib3000mc_get_frontend(struct dvb_frontend* fe, + struct dtv_frontend_properties *fep) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + u16 tps = dib3000mc_read_word(state,458); + + fep->inversion = INVERSION_AUTO; + + fep->bandwidth_hz = state->current_bandwidth; + + switch ((tps >> 8) & 0x1) { + case 0: fep->transmission_mode = TRANSMISSION_MODE_2K; break; + case 1: fep->transmission_mode = TRANSMISSION_MODE_8K; break; + } + + switch (tps & 0x3) { + case 0: fep->guard_interval = GUARD_INTERVAL_1_32; break; + case 1: fep->guard_interval = GUARD_INTERVAL_1_16; break; + case 2: fep->guard_interval = GUARD_INTERVAL_1_8; break; + case 3: fep->guard_interval = GUARD_INTERVAL_1_4; break; + } + + switch ((tps >> 13) & 0x3) { + case 0: fep->modulation = QPSK; break; + case 1: fep->modulation = QAM_16; break; + case 2: + default: fep->modulation = QAM_64; break; + } + + /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */ + /* (tps >> 12) & 0x1 == hrch is used, (tps >> 9) & 0x7 == alpha */ + + fep->hierarchy = HIERARCHY_NONE; + switch ((tps >> 5) & 0x7) { + case 1: fep->code_rate_HP = FEC_1_2; break; + case 2: fep->code_rate_HP = FEC_2_3; break; + case 3: fep->code_rate_HP = FEC_3_4; break; + case 5: fep->code_rate_HP = FEC_5_6; break; + case 7: + default: fep->code_rate_HP = FEC_7_8; break; + + } + + switch ((tps >> 2) & 0x7) { + case 1: fep->code_rate_LP = FEC_1_2; break; + case 2: fep->code_rate_LP = FEC_2_3; break; + case 3: fep->code_rate_LP = FEC_3_4; break; + case 5: fep->code_rate_LP = FEC_5_6; break; + case 7: + default: fep->code_rate_LP = FEC_7_8; break; + } + + return 0; +} + +static int dib3000mc_set_frontend(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *fep = &fe->dtv_property_cache; + struct dib3000mc_state *state = fe->demodulator_priv; + int ret; + + dib3000mc_set_output_mode(state, OUTMODE_HIGH_Z); + + state->current_bandwidth = fep->bandwidth_hz; + dib3000mc_set_bandwidth(state, BANDWIDTH_TO_KHZ(fep->bandwidth_hz)); + + /* maybe the parameter has been changed */ + state->sfn_workaround_active = buggy_sfn_workaround; + + if (fe->ops.tuner_ops.set_params) { + fe->ops.tuner_ops.set_params(fe); + msleep(100); + } + + if (fep->transmission_mode == TRANSMISSION_MODE_AUTO || + fep->guard_interval == GUARD_INTERVAL_AUTO || + fep->modulation == QAM_AUTO || + fep->code_rate_HP == FEC_AUTO) { + int i = 1000, found; + + dib3000mc_autosearch_start(fe); + do { + msleep(1); + found = dib3000mc_autosearch_is_irq(fe); + } while (found == 0 && i--); + + dprintk("autosearch returns: %d\n",found); + if (found == 0 || found == 1) + return 0; // no channel found + + dib3000mc_get_frontend(fe, fep); + } + + ret = dib3000mc_tune(fe); + + /* make this a config parameter */ + dib3000mc_set_output_mode(state, OUTMODE_MPEG2_FIFO); + return ret; +} + +static int dib3000mc_read_status(struct dvb_frontend *fe, enum fe_status *stat) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + u16 lock = dib3000mc_read_word(state, 509); + + *stat = 0; + + if (lock & 0x8000) + *stat |= FE_HAS_SIGNAL; + if (lock & 0x3000) + *stat |= FE_HAS_CARRIER; + if (lock & 0x0100) + *stat |= FE_HAS_VITERBI; + if (lock & 0x0010) + *stat |= FE_HAS_SYNC; + if (lock & 0x0008) + *stat |= FE_HAS_LOCK; + + return 0; +} + +static int dib3000mc_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + *ber = (dib3000mc_read_word(state, 500) << 16) | dib3000mc_read_word(state, 501); + return 0; +} + +static int dib3000mc_read_unc_blocks(struct dvb_frontend *fe, u32 *unc) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + *unc = dib3000mc_read_word(state, 508); + return 0; +} + +static int dib3000mc_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + u16 val = dib3000mc_read_word(state, 392); + *strength = 65535 - val; + return 0; +} + +static int dib3000mc_read_snr(struct dvb_frontend* fe, u16 *snr) +{ + *snr = 0x0000; + return 0; +} + +static int dib3000mc_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) +{ + tune->min_delay_ms = 1000; + return 0; +} + +static void dib3000mc_release(struct dvb_frontend *fe) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + dibx000_exit_i2c_master(&state->i2c_master); + kfree(state); +} + +int dib3000mc_pid_control(struct dvb_frontend *fe, int index, int pid,int onoff) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + dib3000mc_write_word(state, 212 + index, onoff ? (1 << 13) | pid : 0); + return 0; +} +EXPORT_SYMBOL(dib3000mc_pid_control); + +int dib3000mc_pid_parse(struct dvb_frontend *fe, int onoff) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + u16 tmp = dib3000mc_read_word(state, 206) & ~(1 << 4); + tmp |= (onoff << 4); + return dib3000mc_write_word(state, 206, tmp); +} +EXPORT_SYMBOL(dib3000mc_pid_parse); + +void dib3000mc_set_config(struct dvb_frontend *fe, struct dib3000mc_config *cfg) +{ + struct dib3000mc_state *state = fe->demodulator_priv; + state->cfg = cfg; +} +EXPORT_SYMBOL(dib3000mc_set_config); + +int dib3000mc_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib3000mc_config cfg[]) +{ + struct dib3000mc_state *dmcst; + int k; + u8 new_addr; + + static const u8 DIB3000MC_I2C_ADDRESS[] = { 20, 22, 24, 26 }; + + dmcst = kzalloc(sizeof(struct dib3000mc_state), GFP_KERNEL); + if (dmcst == NULL) + return -ENOMEM; + + dmcst->i2c_adap = i2c; + + for (k = no_of_demods-1; k >= 0; k--) { + dmcst->cfg = &cfg[k]; + + /* designated i2c address */ + new_addr = DIB3000MC_I2C_ADDRESS[k]; + dmcst->i2c_addr = new_addr; + if (dib3000mc_identify(dmcst) != 0) { + dmcst->i2c_addr = default_addr; + if (dib3000mc_identify(dmcst) != 0) { + dprintk("-E- DiB3000P/MC #%d: not identified\n", k); + kfree(dmcst); + return -ENODEV; + } + } + + dib3000mc_set_output_mode(dmcst, OUTMODE_MPEG2_PAR_CONT_CLK); + + // set new i2c address and force divstr (Bit 1) to value 0 (Bit 0) + dib3000mc_write_word(dmcst, 1024, (new_addr << 3) | 0x1); + dmcst->i2c_addr = new_addr; + } + + for (k = 0; k < no_of_demods; k++) { + dmcst->cfg = &cfg[k]; + dmcst->i2c_addr = DIB3000MC_I2C_ADDRESS[k]; + + dib3000mc_write_word(dmcst, 1024, dmcst->i2c_addr << 3); + + /* turn off data output */ + dib3000mc_set_output_mode(dmcst, OUTMODE_HIGH_Z); + } + + kfree(dmcst); + return 0; +} +EXPORT_SYMBOL(dib3000mc_i2c_enumeration); + +static const struct dvb_frontend_ops dib3000mc_ops; + +struct dvb_frontend * dib3000mc_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib3000mc_config *cfg) +{ + struct dvb_frontend *demod; + struct dib3000mc_state *st; + st = kzalloc(sizeof(struct dib3000mc_state), GFP_KERNEL); + if (st == NULL) + return NULL; + + st->cfg = cfg; + st->i2c_adap = i2c_adap; + st->i2c_addr = i2c_addr; + + demod = &st->demod; + demod->demodulator_priv = st; + memcpy(&st->demod.ops, &dib3000mc_ops, sizeof(struct dvb_frontend_ops)); + + if (dib3000mc_identify(st) != 0) + goto error; + + dibx000_init_i2c_master(&st->i2c_master, DIB3000MC, st->i2c_adap, st->i2c_addr); + + dib3000mc_write_word(st, 1037, 0x3130); + + return demod; + +error: + kfree(st); + return NULL; +} +EXPORT_SYMBOL_GPL(dib3000mc_attach); + +static const struct dvb_frontend_ops dib3000mc_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "DiBcom 3000MC/P", + .frequency_min_hz = 44250 * kHz, + .frequency_max_hz = 867250 * kHz, + .frequency_stepsize_hz = 62500, + .caps = FE_CAN_INVERSION_AUTO | + FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | + FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_RECOVER | + FE_CAN_HIERARCHY_AUTO, + }, + + .release = dib3000mc_release, + + .init = dib3000mc_init, + .sleep = dib3000mc_sleep, + + .set_frontend = dib3000mc_set_frontend, + .get_tune_settings = dib3000mc_fe_get_tune_settings, + .get_frontend = dib3000mc_get_frontend, + + .read_status = dib3000mc_read_status, + .read_ber = dib3000mc_read_ber, + .read_signal_strength = dib3000mc_read_signal_strength, + .read_snr = dib3000mc_read_snr, + .read_ucblocks = dib3000mc_read_unc_blocks, +}; + +MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); +MODULE_DESCRIPTION("Driver for the DiBcom 3000MC/P COFDM demodulator"); +MODULE_LICENSE("GPL"); |