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dddvb/frontends/stv6111.c

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/*
* Driver for the ST STV6111 tuner
*
* Copyright (C) 2014 Digital Devices GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 only, as published by the Free Software Foundation.
*
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/version.h>
#include <asm/div64.h>
#include <media/dvb_frontend.h>
static inline u32 MulDiv32(u32 a, u32 b, u32 c)
{
u64 tmp64;
tmp64 = (u64)a * (u64)b;
do_div(tmp64, c);
return (u32) tmp64;
}
struct stv {
struct i2c_adapter *i2c;
u8 adr;
u8 reg[11];
u32 ref_freq;
u32 Frequency;
};
static int i2c_read(struct i2c_adapter *adap,
u8 adr, u8 *msg, int len, u8 *answ, int alen)
{
struct i2c_msg msgs[2] = { { .addr = adr, .flags = 0,
.buf = msg, .len = len},
{ .addr = adr, .flags = I2C_M_RD,
.buf = answ, .len = alen } };
if (i2c_transfer(adap, msgs, 2) != 2) {
pr_err("stv6111: i2c_read error\n");
return -1;
}
return 0;
}
static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len)
{
struct i2c_msg msg = {.addr = adr, .flags = 0,
.buf = data, .len = len};
if (i2c_transfer(adap, &msg, 1) != 1) {
pr_err("stv6111: i2c_write error\n");
return -1;
}
return 0;
}
static int write_regs(struct stv *state, int reg, int len)
{
u8 d[12];
memcpy(&d[1], &state->reg[reg], len);
d[0] = reg;
return i2c_write(state->i2c, state->adr, d, len + 1);
}
static int write_reg(struct stv *state, u8 reg, u8 val)
{
u8 d[2] = {reg, val};
return i2c_write(state->i2c, state->adr, d, 2);
}
static int read_reg(struct stv *state, u8 reg, u8 *val)
{
return i2c_read(state->i2c, state->adr, &reg, 1, val, 1);
}
#if 0
static int read_regs(struct stv *state, u8 reg, u8 *val, int len)
{
return i2c_read(state->i2c, state->adr, &reg, 1, val, len);
}
static void dump_regs(struct stv *state)
{
u8 d[11], *c = &state->reg[0];
read_regs(state, 0, d, 11);
pr_info("stv6111_regs = %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7],
d[8], d[9], d[10]);
pr_info("reg[] = %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7],
c[8], c[9], c[10]);
}
#endif
static int wait_for_call_done(struct stv *state, u8 mask)
{
int status = 0;
u32 LockRetryCount = 10;
while (LockRetryCount > 0) {
u8 Status;
status = read_reg(state, 9, &Status);
if (status < 0)
return status;
if ((Status & mask) == 0)
break;
usleep_range(4000, 6000);
LockRetryCount -= 1;
status = -1;
}
return status;
}
static void init_state(struct stv *state)
{
u32 clkdiv = 0;
u32 agcmode = 0;
u32 agcref = 2;
u32 agcset = 0xffffffff;
u32 bbmode = 0xffffffff;
state->reg[0] = 0x08;
state->reg[1] = 0x41;
state->reg[2] = 0x8f;
state->reg[3] = 0x00;
state->reg[4] = 0xce;
state->reg[5] = 0x54;
state->reg[6] = 0x55;
state->reg[7] = 0x45;
state->reg[8] = 0x46;
state->reg[9] = 0xbd;
state->reg[10] = 0x11;
state->ref_freq = 16000;
if (clkdiv <= 3)
state->reg[0x00] |= (clkdiv & 0x03);
if (agcmode <= 3) {
state->reg[0x03] |= (agcmode << 5);
if (agcmode == 0x01)
state->reg[0x01] |= 0x30;
}
if (bbmode <= 3)
state->reg[0x01] = (state->reg[0x01] & ~0x30) | (bbmode << 4);
if (agcref <= 7)
state->reg[0x03] |= agcref;
if (agcset <= 31)
state->reg[0x02] = (state->reg[0x02] & ~0x1F) | agcset | 0x40;
}
static int attach_init(struct stv *state)
{
if (write_regs(state, 0, 11))
return -1;
#if 0
dump_regs(state);
#endif
return 0;
}
static int sleep(struct dvb_frontend *fe)
{
/* struct tda_state *state = fe->tuner_priv; */
return 0;
}
static int init(struct dvb_frontend *fe)
{
/* struct tda_state *state = fe->tuner_priv; */
return 0;
}
static void release(struct dvb_frontend *fe)
{
kfree(fe->tuner_priv);
fe->tuner_priv = NULL;
}
static int set_bandwidth(struct dvb_frontend *fe, u32 CutOffFrequency)
{
struct stv *state = fe->tuner_priv;
u32 index = (CutOffFrequency + 999999) / 1000000;
int stat = 0;
if (index < 6)
index = 6;
if (index > 50)
index = 50;
if ((state->reg[0x08] & ~0xFC) == ((index-6) << 2))
return 0;
state->reg[0x08] = (state->reg[0x08] & ~0xFC) | ((index-6) << 2);
state->reg[0x09] = (state->reg[0x09] & ~0x0C) | 0x08;
if (fe->ops.i2c_gate_ctrl)
stat = fe->ops.i2c_gate_ctrl(fe, 1);
if (!stat) {
write_regs(state, 0x08, 2);
wait_for_call_done(state, 0x08);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
}
return stat;
}
static int set_lof(struct stv *state, u32 LocalFrequency, u32 CutOffFrequency)
{
u32 index = (CutOffFrequency + 999999) / 1000000;
u32 Frequency = (LocalFrequency + 500) / 1000;
u32 p = 1, psel = 0, fvco, div, frac;
u8 Icp, tmp;
/* pr_info("F = %u, COF = %u\n", Frequency, CutOffFrequency); */
if (index < 6)
index = 6;
if (index > 50)
index = 50;
if (Frequency <= 1300000) {
p = 4;
psel = 1;
} else {
p = 2;
psel = 0;
}
fvco = Frequency * p;
div = fvco / state->ref_freq;
frac = fvco % state->ref_freq;
frac = MulDiv32(frac, 0x40000, state->ref_freq);
Icp = 0;
if (fvco < 2700000)
Icp = 0;
else if (fvco < 2950000)
Icp = 1;
else if (fvco < 3300000)
Icp = 2;
else if (fvco < 3700000)
Icp = 3;
else if (fvco < 4200000)
Icp = 5;
else if (fvco < 4800000)
Icp = 6;
else
Icp = 7;
state->reg[0x02] |= 0x80; /* LNA IIP3 Mode */
state->reg[0x03] = (state->reg[0x03] & ~0x80) | (psel << 7);
state->reg[0x04] = (div & 0xFF);
state->reg[0x05] = (((div >> 8) & 0x01) | ((frac & 0x7F) << 1)) & 0xff;
state->reg[0x06] = ((frac >> 7) & 0xFF);
state->reg[0x07] = (state->reg[0x07] & ~0x07) | ((frac >> 15) & 0x07);
state->reg[0x07] = (state->reg[0x07] & ~0xE0) | (Icp << 5);
state->reg[0x08] = (state->reg[0x08] & ~0xFC) | ((index - 6) << 2);
/* Start cal vco,CF */
state->reg[0x09] = (state->reg[0x09] & ~0x0C) | 0x0C;
write_regs(state, 2, 8);
wait_for_call_done(state, 0x0C);
usleep_range(10000, 12000);
read_reg(state, 0x03, &tmp);
if (tmp & 0x10) {
state->reg[0x02] &= ~0x80; /* LNA NF Mode */
write_regs(state, 2, 1);
}
read_reg(state, 0x08, &tmp);
state->Frequency = Frequency;
#if 0
dump_regs(state);
#endif
return 0;
}
static int set_params(struct dvb_frontend *fe)
{
struct stv *state = fe->tuner_priv;
struct dtv_frontend_properties *p = &fe->dtv_property_cache;
u32 freq, symb, cutoff;
int stat = 0;
if (p->delivery_system != SYS_DVBS && p->delivery_system != SYS_DVBS2)
return -EINVAL;
freq = p->frequency * 1000;
symb = p->symbol_rate;
cutoff = 5000000 + MulDiv32(p->symbol_rate, 135, 200);
if (fe->ops.i2c_gate_ctrl)
stat = fe->ops.i2c_gate_ctrl(fe, 1);
if (!stat) {
set_lof(state, freq, cutoff);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
}
return stat;
}
static int get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct stv *state = fe->tuner_priv;
*frequency = state->Frequency;
return 0;
}
struct SLookup {
s16 Value;
u16 RegValue;
};
static struct SLookup LNAGain_NF_LookUp[] = {
/*Gain *100dB*/ /*Reg*/
{ 2572 , 0 },
{ 2575 , 1 },
{ 2580 , 2 },
{ 2588 , 3 },
{ 2596 , 4 },
{ 2611 , 5 },
{ 2633 , 6 },
{ 2664 , 7 },
{ 2701 , 8 },
{ 2753 , 9 },
{ 2816 , 10 },
{ 2902 , 11 },
{ 2995 , 12 },
{ 3104 , 13 },
{ 3215 , 14 },
{ 3337 , 15 },
{ 3492 , 16 },
{ 3614 , 17 },
{ 3731 , 18 },
{ 3861 , 19 },
{ 3988 , 20 },
{ 4124 , 21 },
{ 4253 , 22 },
{ 4386 , 23 },
{ 4505 , 24 },
{ 4623 , 25 },
{ 4726 , 26 },
{ 4821 , 27 },
{ 4903 , 28 },
{ 4979 , 29 },
{ 5045 , 30 },
{ 5102 , 31 }
};
static struct SLookup LNAGain_IIP3_LookUp[] = {
/*Gain *100dB*/ /*reg*/
{ 1548 , 0 },
{ 1552 , 1 },
{ 1569 , 2 },
{ 1565 , 3 },
{ 1577 , 4 },
{ 1594 , 5 },
{ 1627 , 6 },
{ 1656 , 7 },
{ 1700 , 8 },
{ 1748 , 9 },
{ 1805 , 10 },
{ 1896 , 11 },
{ 1995 , 12 },
{ 2113 , 13 },
{ 2233 , 14 },
{ 2366 , 15 },
{ 2543 , 16 },
{ 2687 , 17 },
{ 2842 , 18 },
{ 2999 , 19 },
{ 3167 , 20 },
{ 3342 , 21 },
{ 3507 , 22 },
{ 3679 , 23 },
{ 3827 , 24 },
{ 3970 , 25 },
{ 4094 , 26 },
{ 4210 , 27 },
{ 4308 , 28 },
{ 4396 , 29 },
{ 4468 , 30 },
{ 4535 , 31 }
};
static struct SLookup Gain_RFAGC_LookUp[] = {
/*Gain *100dB*/ /*reg*/
{ 4870 , 0x3000 },
{ 4850 , 0x3C00 },
{ 4800 , 0x4500 },
{ 4750 , 0x4800 },
{ 4700 , 0x4B00 },
{ 4650 , 0x4D00 },
{ 4600 , 0x4F00 },
{ 4550 , 0x5100 },
{ 4500 , 0x5200 },
{ 4420 , 0x5500 },
{ 4316 , 0x5800 },
{ 4200 , 0x5B00 },
{ 4119 , 0x5D00 },
{ 3999 , 0x6000 },
{ 3950 , 0x6100 },
{ 3876 , 0x6300 },
{ 3755 , 0x6600 },
{ 3641 , 0x6900 },
{ 3567 , 0x6B00 },
{ 3425 , 0x6F00 },
{ 3350 , 0x7100 },
{ 3236 , 0x7400 },
{ 3118 , 0x7700 },
{ 3004 , 0x7A00 },
{ 2917 , 0x7C00 },
{ 2776 , 0x7F00 },
{ 2635 , 0x8200 },
{ 2516 , 0x8500 },
{ 2406 , 0x8800 },
{ 2290 , 0x8B00 },
{ 2170 , 0x8E00 },
{ 2073 , 0x9100 },
{ 1949 , 0x9400 },
{ 1836 , 0x9700 },
{ 1712 , 0x9A00 },
{ 1631 , 0x9C00 },
{ 1515 , 0x9F00 },
{ 1400 , 0xA200 },
{ 1323 , 0xA400 },
{ 1203 , 0xA700 },
{ 1091 , 0xAA00 },
{ 1011 , 0xAC00 },
{ 904 , 0xAF00 },
{ 787 , 0xB200 },
{ 685 , 0xB500 },
{ 571 , 0xB800 },
{ 464 , 0xBB00 },
{ 374 , 0xBE00 },
{ 275 , 0xC200 },
{ 181 , 0xC600 },
{ 102 , 0xCC00 },
{ 49 , 0xD900 }
};
// This table is 6 dB too low comapred to the others (probably created with a different BB_MAG setting)
static struct SLookup Gain_Channel_AGC_NF_LookUp[] = {
/*Gain *100dB*/ /*reg*/
{ 7082 , 0x3000 },
{ 7052 , 0x4000 },
{ 7007 , 0x4600 },
{ 6954 , 0x4A00 },
{ 6909 , 0x4D00 },
{ 6833 , 0x5100 },
{ 6753 , 0x5400 },
{ 6659 , 0x5700 },
{ 6561 , 0x5A00 },
{ 6472 , 0x5C00 },
{ 6366 , 0x5F00 },
{ 6259 , 0x6100 },
{ 6151 , 0x6400 },
{ 6026 , 0x6700 },
{ 5920 , 0x6900 },
{ 5835 , 0x6B00 },
{ 5770 , 0x6C00 },
{ 5681 , 0x6E00 },
{ 5596 , 0x7000 },
{ 5503 , 0x7200 },
{ 5429 , 0x7300 },
{ 5319 , 0x7500 },
{ 5220 , 0x7700 },
{ 5111 , 0x7900 },
{ 4983 , 0x7B00 },
{ 4876 , 0x7D00 },
{ 4755 , 0x7F00 },
{ 4635 , 0x8100 },
{ 4499 , 0x8300 },
{ 4405 , 0x8500 },
{ 4323 , 0x8600 },
{ 4233 , 0x8800 },
{ 4156 , 0x8A00 },
{ 4038 , 0x8C00 },
{ 3935 , 0x8E00 },
{ 3823 , 0x9000 },
{ 3712 , 0x9200 },
{ 3601 , 0x9500 },
{ 3511 , 0x9700 },
{ 3413 , 0x9900 },
{ 3309 , 0x9B00 },
{ 3213 , 0x9D00 },
{ 3088 , 0x9F00 },
{ 2992 , 0xA100 },
{ 2878 , 0xA400 },
{ 2769 , 0xA700 },
{ 2645 , 0xAA00 },
{ 2538 , 0xAD00 },
{ 2441 , 0xB000 },
{ 2350 , 0xB600 },
{ 2237 , 0xBA00 },
{ 2137 , 0xBF00 },
{ 2039 , 0xC500 },
{ 1938 , 0xDF00 },
{ 1927 , 0xFF00 }
};
static struct SLookup Gain_Channel_AGC_IIP3_LookUp[] = {
/*Gain *100dB*/ /*reg*/
{ 7070 , 0x3000 },
{ 7028 , 0x4000 },
{ 7019 , 0x4600 },
{ 6900 , 0x4A00 },
{ 6811 , 0x4D00 },
{ 6763 , 0x5100 },
{ 6690 , 0x5400 },
{ 6644 , 0x5700 },
{ 6617 , 0x5A00 },
{ 6598 , 0x5C00 },
{ 6462 , 0x5F00 },
{ 6348 , 0x6100 },
{ 6197 , 0x6400 },
{ 6154 , 0x6700 },
{ 6098 , 0x6900 },
{ 5893 , 0x6B00 },
{ 5812 , 0x6C00 },
{ 5773 , 0x6E00 },
{ 5723 , 0x7000 },
{ 5661 , 0x7200 },
{ 5579 , 0x7300 },
{ 5460 , 0x7500 },
{ 5308 , 0x7700 },
{ 5099 , 0x7900 },
{ 4910 , 0x7B00 },
{ 4800 , 0x7D00 },
{ 4785 , 0x7F00 },
{ 4635 , 0x8100 },
{ 4466 , 0x8300 },
{ 4314 , 0x8500 },
{ 4295 , 0x8600 },
{ 4144 , 0x8800 },
{ 3920 , 0x8A00 },
{ 3889 , 0x8C00 },
{ 3771 , 0x8E00 },
{ 3655 , 0x9000 },
{ 3446 , 0x9200 },
{ 3298 , 0x9500 },
{ 3083 , 0x9700 },
{ 3015 , 0x9900 },
{ 2833 , 0x9B00 },
{ 2746 , 0x9D00 },
{ 2632 , 0x9F00 },
{ 2598 , 0xA100 },
{ 2480 , 0xA400 },
{ 2236 , 0xA700 },
{ 2171 , 0xAA00 },
{ 2060 , 0xAD00 },
{ 1999 , 0xB000 },
{ 1974 , 0xB600 },
{ 1820 , 0xBA00 },
{ 1741 , 0xBF00 },
{ 1655 , 0xC500 },
{ 1444 , 0xDF00 },
{ 1325 , 0xFF00 },
};
static s32 TableLookup(struct SLookup *Table, int TableSize, u16 RegValue)
{
s32 Gain;
s32 RegDiff;
int imin = 0;
int imax = TableSize - 1;
int i;
// Assumes Table[0].RegValue < Table[imax].RegValue
if( RegValue <= Table[0].RegValue )
Gain = Table[0].Value;
else if( RegValue >= Table[imax].RegValue )
Gain = Table[imax].Value;
else {
while(imax-imin > 1) {
i = (imax + imin) / 2;
if ((Table[imin].RegValue <= RegValue) &&
(RegValue <= Table[i].RegValue) )
imax = i;
else
imin = i;
}
RegDiff = Table[imax].RegValue - Table[imin].RegValue;
Gain = Table[imin].Value;
if (RegDiff != 0)
Gain += ((s32) (RegValue - Table[imin].RegValue) *
(s32)(Table[imax].Value - Table[imin].Value))/(RegDiff);
}
return Gain;
}
static int get_rf_strength(struct dvb_frontend *fe, u16 *st)
{
struct stv *state = fe->tuner_priv;
u16 RFAgc = *st;
s32 Gain;
if ((state->reg[0x03] & 0x60) == 0 ) {
// RF Mode
// Read AGC ADC
u8 Reg = 0;
int stat = 0;
if (fe->ops.i2c_gate_ctrl)
stat = fe->ops.i2c_gate_ctrl(fe, 1);
if (!stat) {
write_reg(state, 0x02, state->reg[0x02] | 0x20);
read_reg(state, 2, &Reg);
if (Reg & 0x20)
read_reg(state, 2, &Reg);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
}
if((state->reg[0x02] & 0x80) == 0)
// NF
Gain = TableLookup(LNAGain_NF_LookUp,
ARRAY_SIZE(LNAGain_NF_LookUp), Reg & 0x1F);
else
// IIP3
Gain = TableLookup(LNAGain_IIP3_LookUp,
ARRAY_SIZE(LNAGain_IIP3_LookUp), Reg & 0x1F);
Gain += TableLookup(Gain_RFAGC_LookUp,
ARRAY_SIZE(Gain_RFAGC_LookUp), RFAgc);
Gain -= 2400;
} else {
// Channel Mode
if( (state->reg[0x02] & 0x80) == 0 ) {
// NF
Gain = TableLookup(Gain_Channel_AGC_NF_LookUp,
ARRAY_SIZE(Gain_Channel_AGC_NF_LookUp), RFAgc);
Gain += 600;
} else {
// IIP3
Gain = TableLookup(Gain_Channel_AGC_IIP3_LookUp,
ARRAY_SIZE(Gain_Channel_AGC_IIP3_LookUp), RFAgc);
}
}
if (state->Frequency > 0)
// Tilt correction ( 0.00016 dB/MHz )
Gain -= ((((s32)(state->Frequency / 1000) - 1550) * 2) / 12);
Gain += (s32)( (state->reg[0x01] & 0xC0 ) >> 6 ) * 600 - 1300;// + (BBGain * 10);
if( Gain < 0 )
Gain = 0;
else if (Gain > 10000)
Gain = 10000;
*st = 10000 - Gain;
return 0;
}
static int get_if(struct dvb_frontend *fe, u32 *frequency)
{
*frequency = 0;
return 0;
}
static int get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
return 0;
}
static struct dvb_tuner_ops tuner_ops = {
.info = {
.name = "STV6111",
.frequency_min_hz = 950000000,
.frequency_max_hz = 2150000000,
.frequency_step_hz = 0
},
.init = init,
.sleep = sleep,
.set_params = set_params,
.release = release,
.get_frequency = get_frequency,
.get_if_frequency = get_if,
.get_bandwidth = get_bandwidth,
.get_rf_strength = get_rf_strength,
.set_bandwidth = set_bandwidth,
};
struct dvb_frontend *stv6111_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c, u8 adr)
{
struct stv *state;
int stat = 0;
state = kzalloc(sizeof(struct stv), GFP_KERNEL);
if (!state)
return NULL;
state->adr = adr;
state->i2c = i2c;
memcpy(&fe->ops.tuner_ops, &tuner_ops, sizeof(struct dvb_tuner_ops));
init_state(state);
if (fe->ops.i2c_gate_ctrl)
stat = fe->ops.i2c_gate_ctrl(fe, 1);
if (!stat) {
stat = attach_init(state);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
}
if (stat < 0) {
kfree(state);
return NULL;
}
fe->tuner_priv = state;
return fe;
}
EXPORT_SYMBOL_GPL(stv6111_attach);
MODULE_DESCRIPTION("STV6111 driver");
MODULE_AUTHOR("Ralph Metzler, Manfred Voelkel");
MODULE_LICENSE("GPL v2");
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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