diff options
Diffstat (limited to 'drivers/media/dvb/frontends/mb86a16.c')
| -rw-r--r-- | drivers/media/dvb/frontends/mb86a16.c | 1878 |
1 files changed, 1878 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/mb86a16.c b/drivers/media/dvb/frontends/mb86a16.c new file mode 100644 index 000000000000..d05f7500e0c5 --- /dev/null +++ b/drivers/media/dvb/frontends/mb86a16.c @@ -0,0 +1,1878 @@ +/* + Fujitsu MB86A16 DVB-S/DSS DC Receiver driver + + Copyright (C) Manu Abraham (abraham.manu@gmail.com) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> + +#include "dvb_frontend.h" +#include "mb86a16.h" +#include "mb86a16_priv.h" + +unsigned int verbose = 5; +module_param(verbose, int, 0644); + +#define ABS(x) ((x) < 0 ? (-x) : (x)) + +struct mb86a16_state { + struct i2c_adapter *i2c_adap; + const struct mb86a16_config *config; + struct dvb_frontend frontend; + + /* tuning parameters */ + int frequency; + int srate; + + /* Internal stuff */ + int master_clk; + int deci; + int csel; + int rsel; +}; + +#define MB86A16_ERROR 0 +#define MB86A16_NOTICE 1 +#define MB86A16_INFO 2 +#define MB86A16_DEBUG 3 + +#define dprintk(x, y, z, format, arg...) do { \ + if (z) { \ + if ((x > MB86A16_ERROR) && (x > y)) \ + printk(KERN_ERR "%s: " format "\n", __func__, ##arg); \ + else if ((x > MB86A16_NOTICE) && (x > y)) \ + printk(KERN_NOTICE "%s: " format "\n", __func__, ##arg); \ + else if ((x > MB86A16_INFO) && (x > y)) \ + printk(KERN_INFO "%s: " format "\n", __func__, ##arg); \ + else if ((x > MB86A16_DEBUG) && (x > y)) \ + printk(KERN_DEBUG "%s: " format "\n", __func__, ##arg); \ + } else { \ + if (x > y) \ + printk(format, ##arg); \ + } \ +} while (0) + +#define TRACE_IN dprintk(verbose, MB86A16_DEBUG, 1, "-->()") +#define TRACE_OUT dprintk(verbose, MB86A16_DEBUG, 1, "()-->") + +static int mb86a16_write(struct mb86a16_state *state, u8 reg, u8 val) +{ + int ret; + u8 buf[] = { reg, val }; + + struct i2c_msg msg = { + .addr = state->config->demod_address, + .flags = 0, + .buf = buf, + .len = 2 + }; + + dprintk(verbose, MB86A16_DEBUG, 1, + "writing to [0x%02x],Reg[0x%02x],Data[0x%02x]", + state->config->demod_address, buf[0], buf[1]); + + ret = i2c_transfer(state->i2c_adap, &msg, 1); + + return (ret != 1) ? -EREMOTEIO : 0; +} + +static int mb86a16_read(struct mb86a16_state *state, u8 reg, u8 *val) +{ + int ret; + u8 b0[] = { reg }; + u8 b1[] = { 0 }; + + struct i2c_msg msg[] = { + { + .addr = state->config->demod_address, + .flags = 0, + .buf = b0, + .len = 1 + }, { + .addr = state->config->demod_address, + .flags = I2C_M_RD, + .buf = b1, + .len = 1 + } + }; + ret = i2c_transfer(state->i2c_adap, msg, 2); + if (ret != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "read error(reg=0x%02x, ret=0x%i)", + reg, ret); + + return -EREMOTEIO; + } + *val = b1[0]; + + return ret; +} + +static int CNTM_set(struct mb86a16_state *state, + unsigned char timint1, + unsigned char timint2, + unsigned char cnext) +{ + unsigned char val; + + val = (timint1 << 4) | (timint2 << 2) | cnext; + if (mb86a16_write(state, MB86A16_CNTMR, val) < 0) + goto err; + + return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int smrt_set(struct mb86a16_state *state, int rate) +{ + int tmp ; + int m ; + unsigned char STOFS0, STOFS1; + + m = 1 << state->deci; + tmp = (8192 * state->master_clk - 2 * m * rate * 8192 + state->master_clk / 2) / state->master_clk; + + STOFS0 = tmp & 0x0ff; + STOFS1 = (tmp & 0xf00) >> 8; + + if (mb86a16_write(state, MB86A16_SRATE1, (state->deci << 2) | + (state->csel << 1) | + state->rsel) < 0) + goto err; + if (mb86a16_write(state, MB86A16_SRATE2, STOFS0) < 0) + goto err; + if (mb86a16_write(state, MB86A16_SRATE3, STOFS1) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -1; +} + +static int srst(struct mb86a16_state *state) +{ + if (mb86a16_write(state, MB86A16_RESET, 0x04) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + +} + +static int afcex_data_set(struct mb86a16_state *state, + unsigned char AFCEX_L, + unsigned char AFCEX_H) +{ + if (mb86a16_write(state, MB86A16_AFCEXL, AFCEX_L) < 0) + goto err; + if (mb86a16_write(state, MB86A16_AFCEXH, AFCEX_H) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + + return -1; +} + +static int afcofs_data_set(struct mb86a16_state *state, + unsigned char AFCEX_L, + unsigned char AFCEX_H) +{ + if (mb86a16_write(state, 0x58, AFCEX_L) < 0) + goto err; + if (mb86a16_write(state, 0x59, AFCEX_H) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int stlp_set(struct mb86a16_state *state, + unsigned char STRAS, + unsigned char STRBS) +{ + if (mb86a16_write(state, MB86A16_STRFILTCOEF1, (STRBS << 3) | (STRAS)) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int Vi_set(struct mb86a16_state *state, unsigned char ETH, unsigned char VIA) +{ + if (mb86a16_write(state, MB86A16_VISET2, 0x04) < 0) + goto err; + if (mb86a16_write(state, MB86A16_VISET3, 0xf5) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int initial_set(struct mb86a16_state *state) +{ + if (stlp_set(state, 5, 7)) + goto err; + + udelay(100); + if (afcex_data_set(state, 0, 0)) + goto err; + + udelay(100); + if (afcofs_data_set(state, 0, 0)) + goto err; + + udelay(100); + if (mb86a16_write(state, MB86A16_CRLFILTCOEF1, 0x16) < 0) + goto err; + if (mb86a16_write(state, 0x2f, 0x21) < 0) + goto err; + if (mb86a16_write(state, MB86A16_VIMAG, 0x38) < 0) + goto err; + if (mb86a16_write(state, MB86A16_FAGCS1, 0x00) < 0) + goto err; + if (mb86a16_write(state, MB86A16_FAGCS2, 0x1c) < 0) + goto err; + if (mb86a16_write(state, MB86A16_FAGCS3, 0x20) < 0) + goto err; + if (mb86a16_write(state, MB86A16_FAGCS4, 0x1e) < 0) + goto err; + if (mb86a16_write(state, MB86A16_FAGCS5, 0x23) < 0) + goto err; + if (mb86a16_write(state, 0x54, 0xff) < 0) + goto err; + if (mb86a16_write(state, MB86A16_TSOUT, 0x00) < 0) + goto err; + + return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int S01T_set(struct mb86a16_state *state, + unsigned char s1t, + unsigned s0t) +{ + if (mb86a16_write(state, 0x33, (s1t << 3) | s0t) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + + +static int EN_set(struct mb86a16_state *state, + int cren, + int afcen) +{ + unsigned char val; + + val = 0x7a | (cren << 7) | (afcen << 2); + if (mb86a16_write(state, 0x49, val) < 0) + goto err; + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int AFCEXEN_set(struct mb86a16_state *state, + int afcexen, + int smrt) +{ + unsigned char AFCA ; + + if (smrt > 18875) + AFCA = 4; + else if (smrt > 9375) + AFCA = 3; + else if (smrt > 2250) + AFCA = 2; + else + AFCA = 1; + + if (mb86a16_write(state, 0x2a, 0x02 | (afcexen << 5) | (AFCA << 2)) < 0) + goto err; + + return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int DAGC_data_set(struct mb86a16_state *state, + unsigned char DAGCA, + unsigned char DAGCW) +{ + if (mb86a16_write(state, 0x2d, (DAGCA << 3) | DAGCW) < 0) + goto err; + + return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static void smrt_info_get(struct mb86a16_state *state, int rate) +{ + if (rate >= 37501) { + state->deci = 0; state->csel = 0; state->rsel = 0; + } else if (rate >= 30001) { + state->deci = 0; state->csel = 0; state->rsel = 1; + } else if (rate >= 26251) { + state->deci = 0; state->csel = 1; state->rsel = 0; + } else if (rate >= 22501) { + state->deci = 0; state->csel = 1; state->rsel = 1; + } else if (rate >= 18751) { + state->deci = 1; state->csel = 0; state->rsel = 0; + } else if (rate >= 15001) { + state->deci = 1; state->csel = 0; state->rsel = 1; + } else if (rate >= 13126) { + state->deci = 1; state->csel = 1; state->rsel = 0; + } else if (rate >= 11251) { + state->deci = 1; state->csel = 1; state->rsel = 1; + } else if (rate >= 9376) { + state->deci = 2; state->csel = 0; state->rsel = 0; + } else if (rate >= 7501) { + state->deci = 2; state->csel = 0; state->rsel = 1; + } else if (rate >= 6563) { + state->deci = 2; state->csel = 1; state->rsel = 0; + } else if (rate >= 5626) { + state->deci = 2; state->csel = 1; state->rsel = 1; + } else if (rate >= 4688) { + state->deci = 3; state->csel = 0; state->rsel = 0; + } else if (rate >= 3751) { + state->deci = 3; state->csel = 0; state->rsel = 1; + } else if (rate >= 3282) { + state->deci = 3; state->csel = 1; state->rsel = 0; + } else if (rate >= 2814) { + state->deci = 3; state->csel = 1; state->rsel = 1; + } else if (rate >= 2344) { + state->deci = 4; state->csel = 0; state->rsel = 0; + } else if (rate >= 1876) { + state->deci = 4; state->csel = 0; state->rsel = 1; + } else if (rate >= 1641) { + state->deci = 4; state->csel = 1; state->rsel = 0; + } else if (rate >= 1407) { + state->deci = 4; state->csel = 1; state->rsel = 1; + } else if (rate >= 1172) { + state->deci = 5; state->csel = 0; state->rsel = 0; + } else if (rate >= 939) { + state->deci = 5; state->csel = 0; state->rsel = 1; + } else if (rate >= 821) { + state->deci = 5; state->csel = 1; state->rsel = 0; + } else { + state->deci = 5; state->csel = 1; state->rsel = 1; + } + + if (state->csel == 0) + state->master_clk = 92000; + else + state->master_clk = 61333; + +} + +static int signal_det(struct mb86a16_state *state, + int smrt, + unsigned char *SIG) +{ + + int ret ; + int smrtd ; + int wait_sym ; + + u32 wait_t; + unsigned char S[3] ; + int i ; + + if (*SIG > 45) { + if (CNTM_set(state, 2, 1, 2) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "CNTM set Error"); + return -1; + } + wait_sym = 40000; + } else { + if (CNTM_set(state, 3, 1, 2) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "CNTM set Error"); + return -1; + } + wait_sym = 80000; + } + for (i = 0; i < 3; i++) { + if (i == 0) + smrtd = smrt * 98 / 100; + else if (i == 1) + smrtd = smrt; + else + smrtd = smrt * 102 / 100; + smrt_info_get(state, smrtd); + smrt_set(state, smrtd); + srst(state); + wait_t = (wait_sym + 99 * smrtd / 100) / smrtd; + if (wait_t == 0) + wait_t = 1; + msleep_interruptible(10); + if (mb86a16_read(state, 0x37, &(S[i])) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + } + if ((S[1] > S[0] * 112 / 100) && + (S[1] > S[2] * 112 / 100)) { + + ret = 1; + } else { + ret = 0; + } + *SIG = S[1]; + + if (CNTM_set(state, 0, 1, 2) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "CNTM set Error"); + return -1; + } + + return ret; +} + +static int rf_val_set(struct mb86a16_state *state, + int f, + int smrt, + unsigned char R) +{ + unsigned char C, F, B; + int M; + unsigned char rf_val[5]; + int ack = -1; + + if (smrt > 37750) + C = 1; + else if (smrt > 18875) + C = 2; + else if (smrt > 5500) + C = 3; + else + C = 4; + + if (smrt > 30500) + F = 3; + else if (smrt > 9375) + F = 1; + else if (smrt > 4625) + F = 0; + else + F = 2; + + if (f < 1060) + B = 0; + else if (f < 1175) + B = 1; + else if (f < 1305) + B = 2; + else if (f < 1435) + B = 3; + else if (f < 1570) + B = 4; + else if (f < 1715) + B = 5; + else if (f < 1845) + B = 6; + else if (f < 1980) + B = 7; + else if (f < 2080) + B = 8; + else + B = 9; + + M = f * (1 << R) / 2; + + rf_val[0] = 0x01 | (C << 3) | (F << 1); + rf_val[1] = (R << 5) | ((M & 0x1f000) >> 12); + rf_val[2] = (M & 0x00ff0) >> 4; + rf_val[3] = ((M & 0x0000f) << 4) | B; + + /* Frequency Set */ + if (mb86a16_write(state, 0x21, rf_val[0]) < 0) + ack = 0; + if (mb86a16_write(state, 0x22, rf_val[1]) < 0) + ack = 0; + if (mb86a16_write(state, 0x23, rf_val[2]) < 0) + ack = 0; + if (mb86a16_write(state, 0x24, rf_val[3]) < 0) + ack = 0; + if (mb86a16_write(state, 0x25, 0x01) < 0) + ack = 0; + if (ack == 0) { + dprintk(verbose, MB86A16_ERROR, 1, "RF Setup - I2C transfer error"); + return -EREMOTEIO; + } + + return 0; +} + +static int afcerr_chk(struct mb86a16_state *state) +{ + unsigned char AFCM_L, AFCM_H ; + int AFCM ; + int afcm, afcerr ; + + if (mb86a16_read(state, 0x0e, &AFCM_L) != 2) + goto err; + if (mb86a16_read(state, 0x0f, &AFCM_H) != 2) + goto err; + + AFCM = (AFCM_H << 8) + AFCM_L; + + if (AFCM > 2048) + afcm = AFCM - 4096; + else + afcm = AFCM; + afcerr = afcm * state->master_clk / 8192; + + return afcerr; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int dagcm_val_get(struct mb86a16_state *state) +{ + int DAGCM; + unsigned char DAGCM_H, DAGCM_L; + + if (mb86a16_read(state, 0x45, &DAGCM_L) != 2) + goto err; + if (mb86a16_read(state, 0x46, &DAGCM_H) != 2) + goto err; + + DAGCM = (DAGCM_H << 8) + DAGCM_L; + + return DAGCM; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int mb86a16_read_status(struct dvb_frontend *fe, fe_status_t *status) +{ + u8 stat, stat2; + struct mb86a16_state *state = fe->demodulator_priv; + + *status = 0; + + if (mb86a16_read(state, MB86A16_SIG1, &stat) != 2) + goto err; + if (mb86a16_read(state, MB86A16_SIG2, &stat2) != 2) + goto err; + if ((stat > 25) && (stat2 > 25)) + *status |= FE_HAS_SIGNAL; + if ((stat > 45) && (stat2 > 45)) + *status |= FE_HAS_CARRIER; + + if (mb86a16_read(state, MB86A16_STATUS, &stat) != 2) + goto err; + + if (stat & 0x01) + *status |= FE_HAS_SYNC; + if (stat & 0x01) + *status |= FE_HAS_VITERBI; + + if (mb86a16_read(state, MB86A16_FRAMESYNC, &stat) != 2) + goto err; + + if ((stat & 0x0f) && (*status & FE_HAS_VITERBI)) + *status |= FE_HAS_LOCK; + + return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int sync_chk(struct mb86a16_state *state, + unsigned char *VIRM) +{ + unsigned char val; + int sync; + + if (mb86a16_read(state, 0x0d, &val) != 2) + goto err; + + dprintk(verbose, MB86A16_INFO, 1, "Status = %02x,", val); + sync = val & 0x01; + *VIRM = (val & 0x1c) >> 2; + + return sync; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + +} + +static int freqerr_chk(struct mb86a16_state *state, + int fTP, + int smrt, + int unit) +{ + unsigned char CRM, AFCML, AFCMH; + unsigned char temp1, temp2, temp3; + int crm, afcm, AFCM; + int crrerr, afcerr; /* kHz */ + int frqerr; /* MHz */ + int afcen, afcexen = 0; + int R, M, fOSC, fOSC_OFS; + + if (mb86a16_read(state, 0x43, &CRM) != 2) + goto err; + + if (CRM > 127) + crm = CRM - 256; + else + crm = CRM; + + crrerr = smrt * crm / 256; + if (mb86a16_read(state, 0x49, &temp1) != 2) + goto err; + + afcen = (temp1 & 0x04) >> 2; + if (afcen == 0) { + if (mb86a16_read(state, 0x2a, &temp1) != 2) + goto err; + afcexen = (temp1 & 0x20) >> 5; + } + + if (afcen == 1) { + if (mb86a16_read(state, 0x0e, &AFCML) != 2) + goto err; + if (mb86a16_read(state, 0x0f, &AFCMH) != 2) + goto err; + } else if (afcexen == 1) { + if (mb86a16_read(state, 0x2b, &AFCML) != 2) + goto err; + if (mb86a16_read(state, 0x2c, &AFCMH) != 2) + goto err; + } + if ((afcen == 1) || (afcexen == 1)) { + smrt_info_get(state, smrt); + AFCM = ((AFCMH & 0x01) << 8) + AFCML; + if (AFCM > 255) + afcm = AFCM - 512; + else + afcm = AFCM; + + afcerr = afcm * state->master_clk / 8192; + } else + afcerr = 0; + + if (mb86a16_read(state, 0x22, &temp1) != 2) + goto err; + if (mb86a16_read(state, 0x23, &temp2) != 2) + goto err; + if (mb86a16_read(state, 0x24, &temp3) != 2) + goto err; + + R = (temp1 & 0xe0) >> 5; + M = ((temp1 & 0x1f) << 12) + (temp2 << 4) + (temp3 >> 4); + if (R == 0) + fOSC = 2 * M; + else + fOSC = M; + + fOSC_OFS = fOSC - fTP; + + if (unit == 0) { /* MHz */ + if (crrerr + afcerr + fOSC_OFS * 1000 >= 0) + frqerr = (crrerr + afcerr + fOSC_OFS * 1000 + 500) / 1000; + else + frqerr = (crrerr + afcerr + fOSC_OFS * 1000 - 500) / 1000; + } else { /* kHz */ + frqerr = crrerr + afcerr + fOSC_OFS * 1000; + } + + return frqerr; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static unsigned char vco_dev_get(struct mb86a16_state *state, int smrt) +{ + unsigned char R; + + if (smrt > 9375) + R = 0; + else + R = 1; + + return R; +} + +static void swp_info_get(struct mb86a16_state *state, + int fOSC_start, + int smrt, + int v, int R, + int swp_ofs, + int *fOSC, + int *afcex_freq, + unsigned char *AFCEX_L, + unsigned char *AFCEX_H) +{ + int AFCEX ; + int crnt_swp_freq ; + + crnt_swp_freq = fOSC_start * 1000 + v * swp_ofs; + + if (R == 0) + *fOSC = (crnt_swp_freq + 1000) / 2000 * 2; + else + *fOSC = (crnt_swp_freq + 500) / 1000; + + if (*fOSC >= crnt_swp_freq) + *afcex_freq = *fOSC * 1000 - crnt_swp_freq; + else + *afcex_freq = crnt_swp_freq - *fOSC * 1000; + + AFCEX = *afcex_freq * 8192 / state->master_clk; + *AFCEX_L = AFCEX & 0x00ff; + *AFCEX_H = (AFCEX & 0x0f00) >> 8; +} + + +static int swp_freq_calcuation(struct mb86a16_state *state, int i, int v, int *V, int vmax, int vmin, + int SIGMIN, int fOSC, int afcex_freq, int swp_ofs, unsigned char *SIG1) +{ + int swp_freq ; + + if ((i % 2 == 1) && (v <= vmax)) { + /* positive v (case 1) */ + if ((v - 1 == vmin) && + (*(V + 30 + v) >= 0) && + (*(V + 30 + v - 1) >= 0) && + (*(V + 30 + v - 1) > *(V + 30 + v)) && + (*(V + 30 + v - 1) > SIGMIN)) { + + swp_freq = fOSC * 1000 + afcex_freq - swp_ofs; + *SIG1 = *(V + 30 + v - 1); + } else if ((v == vmax) && + (*(V + 30 + v) >= 0) && + (*(V + 30 + v - 1) >= 0) && + (*(V + 30 + v) > *(V + 30 + v - 1)) && + (*(V + 30 + v) > SIGMIN)) { + /* (case 2) */ + swp_freq = fOSC * 1000 + afcex_freq; + *SIG1 = *(V + 30 + v); + } else if ((*(V + 30 + v) > 0) && + (*(V + 30 + v - 1) > 0) && + (*(V + 30 + v - 2) > 0) && + (*(V + 30 + v - 3) > 0) && + (*(V + 30 + v - 1) > *(V + 30 + v)) && + (*(V + 30 + v - 2) > *(V + 30 + v - 3)) && + ((*(V + 30 + v - 1) > SIGMIN) || + (*(V + 30 + v - 2) > SIGMIN))) { + /* (case 3) */ + if (*(V + 30 + v - 1) >= *(V + 30 + v - 2)) { + swp_freq = fOSC * 1000 + afcex_freq - swp_ofs; + *SIG1 = *(V + 30 + v - 1); + } else { + swp_freq = fOSC * 1000 + afcex_freq - swp_ofs * 2; + *SIG1 = *(V + 30 + v - 2); + } + } else if ((v == vmax) && + (*(V + 30 + v) >= 0) && + (*(V + 30 + v - 1) >= 0) && + (*(V + 30 + v - 2) >= 0) && + (*(V + 30 + v) > *(V + 30 + v - 2)) && + (*(V + 30 + v - 1) > *(V + 30 + v - 2)) && + ((*(V + 30 + v) > SIGMIN) || + (*(V + 30 + v - 1) > SIGMIN))) { + /* (case 4) */ + if (*(V + 30 + v) >= *(V + 30 + v - 1)) { + swp_freq = fOSC * 1000 + afcex_freq; + *SIG1 = *(V + 30 + v); + } else { + swp_freq = fOSC * 1000 + afcex_freq - swp_ofs; + *SIG1 = *(V + 30 + v - 1); + } + } else { + swp_freq = -1 ; + } + } else if ((i % 2 == 0) && (v >= vmin)) { + /* Negative v (case 1) */ + if ((*(V + 30 + v) > 0) && + (*(V + 30 + v + 1) > 0) && + (*(V + 30 + v + 2) > 0) && + (*(V + 30 + v + 1) > *(V + 30 + v)) && + (*(V + 30 + v + 1) > *(V + 30 + v + 2)) && + (*(V + 30 + v + 1) > SIGMIN)) { + + swp_freq = fOSC * 1000 + afcex_freq + swp_ofs; + *SIG1 = *(V + 30 + v + 1); + } else if ((v + 1 == vmax) && + (*(V + 30 + v) >= 0) && + (*(V + 30 + v + 1) >= 0) && + (*(V + 30 + v + 1) > *(V + 30 + v)) && + (*(V + 30 + v + 1) > SIGMIN)) { + /* (case 2) */ + swp_freq = fOSC * 1000 + afcex_freq + swp_ofs; + *SIG1 = *(V + 30 + v); + } else if ((v == vmin) && + (*(V + 30 + v) > 0) && + (*(V + 30 + v + 1) > 0) && + (*(V + 30 + v + 2) > 0) && + (*(V + 30 + v) > *(V + 30 + v + 1)) && + (*(V + 30 + v) > *(V + 30 + v + 2)) && + (*(V + 30 + v) > SIGMIN)) { + /* (case 3) */ + swp_freq = fOSC * 1000 + afcex_freq; + *SIG1 = *(V + 30 + v); + } else if ((*(V + 30 + v) >= 0) && + (*(V + 30 + v + 1) >= 0) && + (*(V + 30 + v + 2) >= 0) && + (*(V + 30 + v + 3) >= 0) && + (*(V + 30 + v + 1) > *(V + 30 + v)) && + (*(V + 30 + v + 2) > *(V + 30 + v + 3)) && + ((*(V + 30 + v + 1) > SIGMIN) || + (*(V + 30 + v + 2) > SIGMIN))) { + /* (case 4) */ + if (*(V + 30 + v + 1) >= *(V + 30 + v + 2)) { + swp_freq = fOSC * 1000 + afcex_freq + swp_ofs; + *SIG1 = *(V + 30 + v + 1); + } else { + swp_freq = fOSC * 1000 + afcex_freq + swp_ofs * 2; + *SIG1 = *(V + 30 + v + 2); + } + } else if ((*(V + 30 + v) >= 0) && + (*(V + 30 + v + 1) >= 0) && + (*(V + 30 + v + 2) >= 0) && + (*(V + 30 + v + 3) >= 0) && + (*(V + 30 + v) > *(V + 30 + v + 2)) && + (*(V + 30 + v + 1) > *(V + 30 + v + 2)) && + (*(V + 30 + v) > *(V + 30 + v + 3)) && + (*(V + 30 + v + 1) > *(V + 30 + v + 3)) && + ((*(V + 30 + v) > SIGMIN) || + (*(V + 30 + v + 1) > SIGMIN))) { + /* (case 5) */ + if (*(V + 30 + v) >= *(V + 30 + v + 1)) { + swp_freq = fOSC * 1000 + afcex_freq; + *SIG1 = *(V + 30 + v); + } else { + swp_freq = fOSC * 1000 + afcex_freq + swp_ofs; + *SIG1 = *(V + 30 + v + 1); + } + } else if ((v + 2 == vmin) && + (*(V + 30 + v) >= 0) && + (*(V + 30 + v + 1) >= 0) && + (*(V + 30 + v + 2) >= 0) && + (*(V + 30 + v + 1) > *(V + 30 + v)) && + (*(V + 30 + v + 2) > *(V + 30 + v)) && + ((*(V + 30 + v + 1) > SIGMIN) || + (*(V + 30 + v + 2) > SIGMIN))) { + /* (case 6) */ + if (*(V + 30 + v + 1) >= *(V + 30 + v + 2)) { + swp_freq = fOSC * 1000 + afcex_freq + swp_ofs; + *SIG1 = *(V + 30 + v + 1); + } else { + swp_freq = fOSC * 1000 + afcex_freq + swp_ofs * 2; + *SIG1 = *(V + 30 + v + 2); + } + } else if ((vmax == 0) && (vmin == 0) && (*(V + 30 + v) > SIGMIN)) { + swp_freq = fOSC * 1000; + *SIG1 = *(V + 30 + v); + } else + swp_freq = -1; + } else + swp_freq = -1; + + return swp_freq; +} + +static void swp_info_get2(struct mb86a16_state *state, + int smrt, + int R, + int swp_freq, + int *afcex_freq, + int *fOSC, + unsigned char *AFCEX_L, + unsigned char *AFCEX_H) +{ + int AFCEX ; + + if (R == 0) + *fOSC = (swp_freq + 1000) / 2000 * 2; + else + *fOSC = (swp_freq + 500) / 1000; + + if (*fOSC >= swp_freq) + *afcex_freq = *fOSC * 1000 - swp_freq; + else + *afcex_freq = swp_freq - *fOSC * 1000; + + AFCEX = *afcex_freq * 8192 / state->master_clk; + *AFCEX_L = AFCEX & 0x00ff; + *AFCEX_H = (AFCEX & 0x0f00) >> 8; +} + +static void afcex_info_get(struct mb86a16_state *state, + int afcex_freq, + unsigned char *AFCEX_L, + unsigned char *AFCEX_H) +{ + int AFCEX ; + + AFCEX = afcex_freq * 8192 / state->master_clk; + *AFCEX_L = AFCEX & 0x00ff; + *AFCEX_H = (AFCEX & 0x0f00) >> 8; +} + +static int SEQ_set(struct mb86a16_state *state, unsigned char loop) +{ + /* SLOCK0 = 0 */ + if (mb86a16_write(state, 0x32, 0x02 | (loop << 2)) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + return 0; +} + +static int iq_vt_set(struct mb86a16_state *state, unsigned char IQINV) +{ + /* Viterbi Rate, IQ Settings */ + if (mb86a16_write(state, 0x06, 0xdf | (IQINV << 5)) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + return 0; +} + +static int FEC_srst(struct mb86a16_state *state) +{ + if (mb86a16_write(state, MB86A16_RESET, 0x02) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + return 0; +} + +static int S2T_set(struct mb86a16_state *state, unsigned char S2T) +{ + if (mb86a16_write(state, 0x34, 0x70 | S2T) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + return 0; +} + +static int S45T_set(struct mb86a16_state *state, unsigned char S4T, unsigned char S5T) +{ + if (mb86a16_write(state, 0x35, 0x00 | (S5T << 4) | S4T) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + return 0; +} + + +static int mb86a16_set_fe(struct mb86a16_state *state) +{ + u8 agcval, cnmval; + + int i, j; + int fOSC = 0; + int fOSC_start = 0; + int wait_t; + int fcp; + int swp_ofs; + int V[60]; + u8 SIG1MIN; + + unsigned char CREN, AFCEN, AFCEXEN; + unsigned char SIG1; + unsigned char TIMINT1, TIMINT2, TIMEXT; + unsigned char S0T, S1T; + unsigned char S2T; +/* unsigned char S2T, S3T; */ + unsigned char S4T, S5T; + unsigned char AFCEX_L, AFCEX_H; + unsigned char R; + unsigned char VIRM; + unsigned char ETH, VIA; + unsigned char junk; + + int loop; + int ftemp; + int v, vmax, vmin; + int vmax_his, vmin_his; + int swp_freq, prev_swp_freq[20]; + int prev_freq_num; + int signal_dupl; + int afcex_freq; + int signal; + int afcerr; + int temp_freq, delta_freq; + int dagcm[4]; + int smrt_d; +/* int freq_err; */ + int n; + int ret = -1; + int sync; + + dprintk(verbose, MB86A16_INFO, 1, "freq=%d Mhz, symbrt=%d Ksps", state->frequency, state->srate); + + fcp = 3000; + swp_ofs = state->srate / 4; + + for (i = 0; i < 60; i++) + V[i] = -1; + + for (i = 0; i < 20; i++) + prev_swp_freq[i] = 0; + + SIG1MIN = 25; + + for (n = 0; ((n < 3) && (ret == -1)); n++) { + SEQ_set(state, 0); + iq_vt_set(state, 0); + + CREN = 0; + AFCEN = 0; + AFCEXEN = 1; + TIMINT1 = 0; + TIMINT2 = 1; + TIMEXT = 2; + S1T = 0; + S0T = 0; + + if (initial_set(state) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "initial set failed"); + return -1; + } + if (DAGC_data_set(state, 3, 2) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "DAGC data set error"); + return -1; + } + if (EN_set(state, CREN, AFCEN) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "EN set error"); + return -1; /* (0, 0) */ + } + if (AFCEXEN_set(state, AFCEXEN, state->srate) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "AFCEXEN set error"); + return -1; /* (1, smrt) = (1, symbolrate) */ + } + if (CNTM_set(state, TIMINT1, TIMINT2, TIMEXT) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "CNTM set error"); + return -1; /* (0, 1, 2) */ + } + if (S01T_set(state, S1T, S0T) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "S01T set error"); + return -1; /* (0, 0) */ + } + smrt_info_get(state, state->srate); + if (smrt_set(state, state->srate) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "smrt info get error"); + return -1; + } + + R = vco_dev_get(state, state->srate); + if (R == 1) + fOSC_start = state->frequency; + + else if (R == 0) { + if (state->frequency % 2 == 0) { + fOSC_start = state->frequency; + } else { + fOSC_start = state->frequency + 1; + if (fOSC_start > 2150) + fOSC_start = state->frequency - 1; + } + } + loop = 1; + ftemp = fOSC_start * 1000; + vmax = 0 ; + while (loop == 1) { + ftemp = ftemp + swp_ofs; + vmax++; + + /* Upper bound */ + if (ftemp > 2150000) { + loop = 0; + vmax--; + } else { + if ((ftemp == 2150000) || + (ftemp - state->frequency * 1000 >= fcp + state->srate / 4)) + loop = 0; + } + } + + loop = 1; + ftemp = fOSC_start * 1000; + vmin = 0 ; + while (loop == 1) { + ftemp = ftemp - swp_ofs; + vmin--; + + /* Lower bound */ + if (ftemp < 950000) { + loop = 0; + vmin++; + } else { + if ((ftemp == 950000) || + (state->frequency * 1000 - ftemp >= fcp + state->srate / 4)) + loop = 0; + } + } + + wait_t = (8000 + state->srate / 2) / state->srate; + if (wait_t == 0) + wait_t = 1; + + i = 0; + j = 0; + prev_freq_num = 0; + loop = 1; + signal = 0; + vmax_his = 0; + vmin_his = 0; + v = 0; + + while (loop == 1) { + swp_info_get(state, fOSC_start, state->srate, + v, R, swp_ofs, &fOSC, + &afcex_freq, &AFCEX_L, &AFCEX_H); + + udelay(100); + if (rf_val_set(state, fOSC, state->srate, R) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "rf val set error"); + return -1; + } + udelay(100); + if (afcex_data_set(state, AFCEX_L, AFCEX_H) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "afcex data set error"); + return -1; + } + if (srst(state) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "srst error"); + return -1; + } + msleep_interruptible(wait_t); + + if (mb86a16_read(state, 0x37, &SIG1) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -1; + } + V[30 + v] = SIG1 ; + swp_freq = swp_freq_calcuation(state, i, v, V, vmax, vmin, + SIG1MIN, fOSC, afcex_freq, + swp_ofs, &SIG1); /* changed */ + + signal_dupl = 0; + for (j = 0; j < prev_freq_num; j++) { + if ((ABS(prev_swp_freq[j] - swp_freq)) < (swp_ofs * 3 / 2)) { + signal_dupl = 1; + dprintk(verbose, MB86A16_INFO, 1, "Probably Duplicate Signal, j = %d", j); + } + } + if ((signal_dupl == 0) && (swp_freq > 0) && (ABS(swp_freq - state->frequency * 1000) < fcp + state->srate / 6)) { + dprintk(verbose, MB86A16_DEBUG, 1, "------ Signal detect ------ [swp_freq=[%07d, srate=%05d]]", swp_freq, state->srate); + prev_swp_freq[prev_freq_num] = swp_freq; + prev_freq_num++; + swp_info_get2(state, state->srate, R, swp_freq, + &afcex_freq, &fOSC, + &AFCEX_L, &AFCEX_H); + + if (rf_val_set(state, fOSC, state->srate, R) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "rf val set error"); + return -1; + } + if (afcex_data_set(state, AFCEX_L, AFCEX_H) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "afcex data set error"); + return -1; + } + signal = signal_det(state, state->srate, &SIG1); + if (signal == 1) { + dprintk(verbose, MB86A16_ERROR, 1, "***** Signal Found *****"); + loop = 0; + } else { + dprintk(verbose, MB86A16_ERROR, 1, "!!!!! No signal !!!!!, try again..."); + smrt_info_get(state, state->srate); + if (smrt_set(state, state->srate) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "smrt set error"); + return -1; + } + } + } + if (v > vmax) + vmax_his = 1 ; + if (v < vmin) + vmin_his = 1 ; + i++; + + if ((i % 2 == 1) && (vmax_his == 1)) + i++; + if ((i % 2 == 0) && (vmin_his == 1)) + i++; + + if (i % 2 == 1) + v = (i + 1) / 2; + else + v = -i / 2; + + if ((vmax_his == 1) && (vmin_his == 1)) + loop = 0 ; + } + + if (signal == 1) { + dprintk(verbose, MB86A16_INFO, 1, " Start Freq Error Check"); + S1T = 7 ; + S0T = 1 ; + CREN = 0 ; + AFCEN = 1 ; + AFCEXEN = 0 ; + + if (S01T_set(state, S1T, S0T) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "S01T set error"); + return -1; + } + smrt_info_get(state, state->srate); + if (smrt_set(state, state->srate) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "smrt set error"); + return -1; + } + if (EN_set(state, CREN, AFCEN) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "EN set error"); + return -1; + } + if (AFCEXEN_set(state, AFCEXEN, state->srate) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "AFCEXEN set error"); + return -1; + } + afcex_info_get(state, afcex_freq, &AFCEX_L, &AFCEX_H); + if (afcofs_data_set(state, AFCEX_L, AFCEX_H) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "AFCOFS data set error"); + return -1; + } + if (srst(state) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "srst error"); + return -1; + } + /* delay 4~200 */ + wait_t = 200000 / state->master_clk + 200000 / state->srate; + msleep(wait_t); + afcerr = afcerr_chk(state); + if (afcerr == -1) + return -1; + + swp_freq = fOSC * 1000 + afcerr ; + AFCEXEN = 1 ; + if (state->srate >= 1500) + smrt_d = state->srate / 3; + else + smrt_d = state->srate / 2; + smrt_info_get(state, smrt_d); + if (smrt_set(state, smrt_d) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "smrt set error"); + return -1; + } + if (AFCEXEN_set(state, AFCEXEN, smrt_d) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "AFCEXEN set error"); + return -1; + } + R = vco_dev_get(state, smrt_d); + if (DAGC_data_set(state, 2, 0) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "DAGC data set error"); + return -1; + } + for (i = 0; i < 3; i++) { + temp_freq = swp_freq + (i - 1) * state->srate / 8; + swp_info_get2(state, smrt_d, R, temp_freq, &afcex_freq, &fOSC, &AFCEX_L, &AFCEX_H); + if (rf_val_set(state, fOSC, smrt_d, R) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "rf val set error"); + return -1; + } + if (afcex_data_set(state, AFCEX_L, AFCEX_H) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "afcex data set error"); + return -1; + } + wait_t = 200000 / state->master_clk + 40000 / smrt_d; + msleep(wait_t); + dagcm[i] = dagcm_val_get(state); + } + if ((dagcm[0] > dagcm[1]) && + (dagcm[0] > dagcm[2]) && + (dagcm[0] - dagcm[1] > 2 * (dagcm[2] - dagcm[1]))) { + + temp_freq = swp_freq - 2 * state->srate / 8; + swp_info_get2(state, smrt_d, R, temp_freq, &afcex_freq, &fOSC, &AFCEX_L, &AFCEX_H); + if (rf_val_set(state, fOSC, smrt_d, R) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "rf val set error"); + return -1; + } + if (afcex_data_set(state, AFCEX_L, AFCEX_H) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "afcex data set"); + return -1; + } + wait_t = 200000 / state->master_clk + 40000 / smrt_d; + msleep(wait_t); + dagcm[3] = dagcm_val_get(state); + if (dagcm[3] > dagcm[1]) + delta_freq = (dagcm[2] - dagcm[0] + dagcm[1] - dagcm[3]) * state->srate / 300; + else + delta_freq = 0; + } else if ((dagcm[2] > dagcm[1]) && + (dagcm[2] > dagcm[0]) && + (dagcm[2] - dagcm[1] > 2 * (dagcm[0] - dagcm[1]))) { + + temp_freq = swp_freq + 2 * state->srate / 8; + swp_info_get2(state, smrt_d, R, temp_freq, &afcex_freq, &fOSC, &AFCEX_L, &AFCEX_H); + if (rf_val_set(state, fOSC, smrt_d, R) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "rf val set"); + return -1; + } + if (afcex_data_set(state, AFCEX_L, AFCEX_H) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "afcex data set"); + return -1; + } + wait_t = 200000 / state->master_clk + 40000 / smrt_d; + msleep(wait_t); + dagcm[3] = dagcm_val_get(state); + if (dagcm[3] > dagcm[1]) + delta_freq = (dagcm[2] - dagcm[0] + dagcm[3] - dagcm[1]) * state->srate / 300; + else + delta_freq = 0 ; + + } else { + delta_freq = 0 ; + } + dprintk(verbose, MB86A16_INFO, 1, "SWEEP Frequency = %d", swp_freq); + swp_freq += delta_freq; + dprintk(verbose, MB86A16_INFO, 1, "Adjusting .., DELTA Freq = %d, SWEEP Freq=%d", delta_freq, swp_freq); + if (ABS(state->frequency * 1000 - swp_freq) > 3800) { + dprintk(verbose, MB86A16_INFO, 1, "NO -- SIGNAL !"); + } else { + + S1T = 0; + S0T = 3; + CREN = 1; + AFCEN = 0; + AFCEXEN = 1; + + if (S01T_set(state, S1T, S0T) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "S01T set error"); + return -1; + } + if (DAGC_data_set(state, 0, 0) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "DAGC data set error"); + return -1; + } + R = vco_dev_get(state, state->srate); + smrt_info_get(state, state->srate); + if (smrt_set(state, state->srate) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "smrt set error"); + return -1; + } + if (EN_set(state, CREN, AFCEN) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "EN set error"); + return -1; + } + if (AFCEXEN_set(state, AFCEXEN, state->srate) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "AFCEXEN set error"); + return -1; + } + swp_info_get2(state, state->srate, R, swp_freq, &afcex_freq, &fOSC, &AFCEX_L, &AFCEX_H); + if (rf_val_set(state, fOSC, state->srate, R) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "rf val set error"); + return -1; + } + if (afcex_data_set(state, AFCEX_L, AFCEX_H) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "afcex data set error"); + return -1; + } + if (srst(state) < 0) { + dprintk(verbose, MB86A16_ERROR, 1, "srst error"); + return -1; + } + wait_t = 7 + (10000 + state->srate / 2) / state->srate; + if (wait_t == 0) + wait_t = 1; + msleep_interruptible(wait_t); + if (mb86a16_read(state, 0x37, &SIG1) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + if (SIG1 > 110) { + S2T = 4; S4T = 1; S5T = 6; ETH = 4; VIA = 6; + wait_t = 7 + (917504 + state->srate / 2) / state->srate; + } else if (SIG1 > 105) { + S2T = 4; S4T = 2; S5T = 8; ETH = 7; VIA = 2; + wait_t = 7 + (1048576 + state->srate / 2) / state->srate; + } else if (SIG1 > 85) { + S2T = 5; S4T = 2; S5T = 8; ETH = 7; VIA = 2; + wait_t = 7 + (1310720 + state->srate / 2) / state->srate; + } else if (SIG1 > 65) { + S2T = 6; S4T = 2; S5T = 8; ETH = 7; VIA = 2; + wait_t = 7 + (1572864 + state->srate / 2) / state->srate; + } else { + S2T = 7; S4T = 2; S5T = 8; ETH = 7; VIA = 2; + wait_t = 7 + (2097152 + state->srate / 2) / state->srate; + } + wait_t *= 2; /* FOS */ + S2T_set(state, S2T); + S45T_set(state, S4T, S5T); + Vi_set(state, ETH, VIA); + srst(state); + msleep_interruptible(wait_t); + sync = sync_chk(state, &VIRM); + dprintk(verbose, MB86A16_INFO, 1, "-------- Viterbi=[%d] SYNC=[%d] ---------", VIRM, sync); + if (VIRM) { + if (VIRM == 4) { + /* 5/6 */ + if (SIG1 > 110) + wait_t = (786432 + state->srate / 2) / state->srate; + else + wait_t = (1572864 + state->srate / 2) / state->srate; + if (state->srate < 5000) + /* FIXME ! , should be a long wait ! */ + msleep_interruptible(wait_t); + else + msleep_interruptible(wait_t); + + if (sync_chk(state, &junk) == 0) { + iq_vt_set(state, 1); + FEC_srst(state); + } + } + /* 1/2, 2/3, 3/4, 7/8 */ + if (SIG1 > 110) + wait_t = (786432 + state->srate / 2) / state->srate; + else + wait_t = (1572864 + state->srate / 2) / state->srate; + msleep_interruptible(wait_t); + SEQ_set(state, 1); + } else { + dprintk(verbose, MB86A16_INFO, 1, "NO -- SYNC"); + SEQ_set(state, 1); + ret = -1; + } + } + } else { + dprintk(verbose, MB86A16_INFO, 1, "NO -- SIGNAL"); + ret = -1; + } + + sync = sync_chk(state, &junk); + if (sync) { + dprintk(verbose, MB86A16_INFO, 1, "******* SYNC *******"); + freqerr_chk(state, state->frequency, state->srate, 1); + ret = 0; + break; + } + } + + mb86a16_read(state, 0x15, &agcval); + mb86a16_read(state, 0x26, &cnmval); + dprintk(verbose, MB86A16_INFO, 1, "AGC = %02x CNM = %02x", agcval, cnmval); + + return ret; +} + +static int mb86a16_send_diseqc_msg(struct dvb_frontend *fe, + struct dvb_diseqc_master_cmd *cmd) +{ + struct mb86a16_state *state = fe->demodulator_priv; + int i; + u8 regs; + + if (mb86a16_write(state, MB86A16_DCC1, MB86A16_DCC1_DISTA) < 0) + goto err; + if (mb86a16_write(state, MB86A16_DCCOUT, 0x00) < 0) + goto err; + if (mb86a16_write(state, MB86A16_TONEOUT2, 0x04) < 0) + goto err; + + regs = 0x18; + + if (cmd->msg_len > 5 || cmd->msg_len < 4) + return -EINVAL; + + for (i = 0; i < cmd->msg_len; i++) { + if (mb86a16_write(state, regs, cmd->msg[i]) < 0) + goto err; + + regs++; + } + i += 0x90; + + msleep_interruptible(10); + + if (mb86a16_write(state, MB86A16_DCC1, i) < 0) + goto err; + if (mb86a16_write(state, MB86A16_DCCOUT, MB86A16_DCCOUT_DISEN) < 0) + goto err; + + return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int mb86a16_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst) +{ + struct mb86a16_state *state = fe->demodulator_priv; + + switch (burst) { + case SEC_MINI_A: + if (mb86a16_write(state, MB86A16_DCC1, MB86A16_DCC1_DISTA | + MB86A16_DCC1_TBEN | + MB86A16_DCC1_TBO) < 0) + goto err; + if (mb86a16_write(state, MB86A16_DCCOUT, MB86A16_DCCOUT_DISEN) < 0) + goto err; + break; + case SEC_MINI_B: + if (mb86a16_write(state, MB86A16_DCC1, MB86A16_DCC1_DISTA | + MB86A16_DCC1_TBEN) < 0) + goto err; + if (mb86a16_write(state, MB86A16_DCCOUT, MB86A16_DCCOUT_DISEN) < 0) + goto err; + break; + } + + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int mb86a16_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone) +{ + struct mb86a16_state *state = fe->demodulator_priv; + + switch (tone) { + case SEC_TONE_ON: + if (mb86a16_write(state, MB86A16_TONEOUT2, 0x00) < 0) + goto err; + if (mb86a16_write(state, MB86A16_DCC1, MB86A16_DCC1_DISTA | + MB86A16_DCC1_CTOE) < 0) + + goto err; + if (mb86a16_write(state, MB86A16_DCCOUT, MB86A16_DCCOUT_DISEN) < 0) + goto err; + break; + case SEC_TONE_OFF: + if (mb86a16_write(state, MB86A16_TONEOUT2, 0x04) < 0) + goto err; + if (mb86a16_write(state, MB86A16_DCC1, MB86A16_DCC1_DISTA) < 0) + goto err; + if (mb86a16_write(state, MB86A16_DCCOUT, 0x00) < 0) + goto err; + break; + default: + return -EINVAL; + } + return 0; + +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static enum dvbfe_search mb86a16_search(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p) +{ + struct mb86a16_state *state = fe->demodulator_priv; + + state->frequency = p->frequency / 1000; + state->srate = p->u.qpsk.symbol_rate / 1000; + + if (!mb86a16_set_fe(state)) { + dprintk(verbose, MB86A16_ERROR, 1, "Succesfully acquired LOCK"); + return DVBFE_ALGO_SEARCH_SUCCESS; + } + + dprintk(verbose, MB86A16_ERROR, 1, "Lock acquisition failed!"); + return DVBFE_ALGO_SEARCH_FAILED; +} + +static void mb86a16_release(struct dvb_frontend *fe) +{ + struct mb86a16_state *state = fe->demodulator_priv; + kfree(state); +} + +static int mb86a16_init(struct dvb_frontend *fe) +{ + return 0; +} + +static int mb86a16_sleep(struct dvb_frontend *fe) +{ + return 0; +} + +static int mb86a16_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + u8 ber_mon, ber_tab, ber_lsb, ber_mid, ber_msb, ber_tim, ber_rst; + u32 timer; + + struct mb86a16_state *state = fe->demodulator_priv; + + *ber = 0; + if (mb86a16_read(state, MB86A16_BERMON, &ber_mon) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERTAB, &ber_tab) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERLSB, &ber_lsb) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERMID, &ber_mid) != 2) + goto err; + if (mb86a16_read(state, MB86A16_BERMSB, &ber_msb) != 2) + goto err; + /* BER monitor invalid when BER_EN = 0 */ + if (ber_mon & 0x04) { + /* coarse, fast calculation */ + *ber = ber_tab & 0x1f; + dprintk(verbose, MB86A16_DEBUG, 1, "BER coarse=[0x%02x]", *ber); + if (ber_mon & 0x01) { + /* + * BER_SEL = 1, The monitored BER is the estimated + * value with a Reed-Solomon decoder error amount at + * the deinterleaver output. + * monitored BER is expressed as a 20 bit output in total + */ + ber_rst = ber_mon >> 3; + *ber = (((ber_msb << 8) | ber_mid) << 8) | ber_lsb; + if (ber_rst == 0) + timer = 12500000; + if (ber_rst == 1) + timer = 25000000; + if (ber_rst == 2) + timer = 50000000; + if (ber_rst == 3) + timer = 100000000; + + *ber /= timer; + dprintk(verbose, MB86A16_DEBUG, 1, "BER fine=[0x%02x]", *ber); + } else { + /* + * BER_SEL = 0, The monitored BER is the estimated + * value with a Viterbi decoder error amount at the + * QPSK demodulator output. + * monitored BER is expressed as a 24 bit output in total + */ + ber_tim = ber_mon >> 1; + *ber = (((ber_msb << 8) | ber_mid) << 8) | ber_lsb; + if (ber_tim == 0) + timer = 16; + if (ber_tim == 1) + timer = 24; + + *ber /= 2 ^ timer; + dprintk(verbose, MB86A16_DEBUG, 1, "BER fine=[0x%02x]", *ber); + } + } + return 0; +err: + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; +} + +static int mb86a16_read_signal_strength(struct dvb_frontend *fe, u16 *strength) +{ + u8 agcm = 0; + struct mb86a16_state *state = fe->demodulator_priv; + + *strength = 0; + if (mb86a16_read(state, MB86A16_AGCM, &agcm) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + *strength = ((0xff - agcm) * 100) / 256; + dprintk(verbose, MB86A16_DEBUG, 1, "Signal strength=[%d %%]", (u8) *strength); + *strength = (0xffff - 0xff) + agcm; + + return 0; +} + +struct cnr { + u8 cn_reg; + u8 cn_val; +}; + +static const struct cnr cnr_tab[] = { + { 35, 2 }, + { 40, 3 }, + { 50, 4 }, + { 60, 5 }, + { 70, 6 }, + { 80, 7 }, + { 92, 8 }, + { 103, 9 }, + { 115, 10 }, + { 138, 12 }, + { 162, 15 }, + { 180, 18 }, + { 185, 19 }, + { 189, 20 }, + { 195, 22 }, + { 199, 24 }, + { 201, 25 }, + { 202, 26 }, + { 203, 27 }, + { 205, 28 }, + { 208, 30 } +}; + +static int mb86a16_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct mb86a16_state *state = fe->demodulator_priv; + int i = 0; + int low_tide = 2, high_tide = 30, q_level; + u8 cn; + + *snr = 0; + if (mb86a16_read(state, 0x26, &cn) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + + for (i = 0; i < ARRAY_SIZE(cnr_tab); i++) { + if (cn < cnr_tab[i].cn_reg) { + *snr = cnr_tab[i].cn_val; + break; + } + } + q_level = (*snr * 100) / (high_tide - low_tide); + dprintk(verbose, MB86A16_ERROR, 1, "SNR (Quality) = [%d dB], Level=%d %%", *snr, q_level); + *snr = (0xffff - 0xff) + *snr; + + return 0; +} + +static int mb86a16_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + u8 dist; + struct mb86a16_state *state = fe->demodulator_priv; + + if (mb86a16_read(state, MB86A16_DISTMON, &dist) != 2) { + dprintk(verbose, MB86A16_ERROR, 1, "I2C transfer error"); + return -EREMOTEIO; + } + *ucblocks = dist; + + return 0; +} + +static enum dvbfe_algo mb86a16_frontend_algo(struct dvb_frontend *fe) +{ + return DVBFE_ALGO_CUSTOM; +} + +static struct dvb_frontend_ops mb86a16_ops = { + .info = { + .name = "Fujitsu MB86A16 DVB-S", + .type = FE_QPSK, + .frequency_min = 950000, + .frequency_max = 2150000, + .frequency_stepsize = 3000, + .frequency_tolerance = 0, + .symbol_rate_min = 1000000, + .symbol_rate_max = 45000000, + .symbol_rate_tolerance = 500, + .caps = 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_QPSK | + FE_CAN_FEC_AUTO + }, + .release = mb86a16_release, + + .get_frontend_algo = mb86a16_frontend_algo, + .search = mb86a16_search, + .read_status = mb86a16_read_status, + .init = mb86a16_init, + .sleep = mb86a16_sleep, + .read_status = mb86a16_read_status, + + .read_ber = mb86a16_read_ber, + .read_signal_strength = mb86a16_read_signal_strength, + .read_snr = mb86a16_read_snr, + .read_ucblocks = mb86a16_read_ucblocks, + + .diseqc_send_master_cmd = mb86a16_send_diseqc_msg, + .diseqc_send_burst = mb86a16_send_diseqc_burst, + .set_tone = mb86a16_set_tone, +}; + +struct dvb_frontend *mb86a16_attach(const struct mb86a16_config *config, + struct i2c_adapter *i2c_adap) +{ + u8 dev_id = 0; + struct mb86a16_state *state = NULL; + + state = kmalloc(sizeof(struct mb86a16_state), GFP_KERNEL); + if (state == NULL) + goto error; + + state->config = config; + state->i2c_adap = i2c_adap; + + mb86a16_read(state, 0x7f, &dev_id); + if (dev_id != 0xfe) + goto error; + + memcpy(&state->frontend.ops, &mb86a16_ops, sizeof(struct dvb_frontend_ops)); + state->frontend.demodulator_priv = state; + state->frontend.ops.set_voltage = state->config->set_voltage; + + return &state->frontend; +error: + kfree(state); + return NULL; +} +EXPORT_SYMBOL(mb86a16_attach); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Manu Abraham"); |
