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linux/drivers/media/dvb-frontends/mb86a16.c
Thomas Gleixner 74ba9207e1 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:45 +02:00

1857 lines
45 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-or-later
/*
Fujitsu MB86A16 DVB-S/DSS DC Receiver driver
Copyright (C) Manu Abraham (abraham.manu@gmail.com)
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <media/dvb_frontend.h>
#include "mb86a16.h"
#include "mb86a16_priv.h"
static unsigned int verbose = 5;
module_param(verbose, int, 0644);
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=%i)",
reg, ret);
if (ret < 0)
return 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;
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;
}
} else {
if (CNTM_set(state, 3, 1, 2) < 0) {
dprintk(verbose, MB86A16_ERROR, 1, "CNTM set Error");
return -1;
}
}
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);
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, enum fe_status *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");
*VIRM = 0;
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,
enum fe_sec_mini_cmd 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, enum fe_sec_tone_mode 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 dtv_frontend_properties *p = &fe->dtv_property_cache;
struct mb86a16_state *state = fe->demodulator_priv;
state->frequency = p->frequency / 1000;
state->srate = p->symbol_rate / 1000;
if (!mb86a16_set_fe(state)) {
dprintk(verbose, MB86A16_ERROR, 1, "Successfully 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) & 0x03;
*ber = (((ber_msb << 8) | ber_mid) << 8) | ber_lsb;
if (ber_rst == 0)
timer = 12500000;
else if (ber_rst == 1)
timer = 25000000;
else if (ber_rst == 2)
timer = 50000000;
else /* 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) & 0x01;
*ber = (((ber_msb << 8) | ber_mid) << 8) | ber_lsb;
if (ber_tim == 0)
timer = 16;
else /* 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 const struct dvb_frontend_ops mb86a16_ops = {
.delsys = { SYS_DVBS },
.info = {
.name = "Fujitsu MB86A16 DVB-S",
.frequency_min_hz = 950 * MHz,
.frequency_max_hz = 2150 * MHz,
.frequency_stepsize_hz = 3 * MHz,
.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,
.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");
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