android_kernel_motorola_sm6225/drivers/media/dvb/frontends/tda10021.c
Hartmut Birr dc120b0734 V4L/DVB (5544): Budget-av: Make inversion setting configurable, add KNC ONE V1.0 card
Make the inversion setting configurable. The KNC ONE V1.0 uses
non inverted setting for the inversion and add the KNC ONE V1.0 card.

Signed-off-by: Hartmut Birr <e9hack@googlemail.com>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:45:48 -03:00

479 lines
13 KiB
C

/*
TDA10021 - Single Chip Cable Channel Receiver driver module
used on the the Siemens DVB-C cards
Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
Copyright (C) 2004 Markus Schulz <msc@antzsystem.de>
Support for TDA10021
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/delay.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include "dvb_frontend.h"
#include "tda1002x.h"
struct tda10021_state {
struct i2c_adapter* i2c;
/* configuration settings */
const struct tda1002x_config* config;
struct dvb_frontend frontend;
u8 pwm;
u8 reg0;
};
#if 0
#define dprintk(x...) printk(x)
#else
#define dprintk(x...)
#endif
static int verbose;
#define XIN 57840000UL
#define FIN (XIN >> 4)
static int tda10021_inittab_size = 0x40;
static u8 tda10021_inittab[0x40]=
{
0x73, 0x6a, 0x23, 0x0a, 0x02, 0x37, 0x77, 0x1a,
0x37, 0x6a, 0x17, 0x8a, 0x1e, 0x86, 0x43, 0x40,
0xb8, 0x3f, 0xa1, 0x00, 0xcd, 0x01, 0x00, 0xff,
0x11, 0x00, 0x7c, 0x31, 0x30, 0x20, 0x00, 0x00,
0x02, 0x00, 0x00, 0x7d, 0x00, 0x00, 0x00, 0x00,
0x07, 0x00, 0x33, 0x11, 0x0d, 0x95, 0x08, 0x58,
0x00, 0x00, 0x80, 0x00, 0x80, 0xff, 0x00, 0x00,
0x04, 0x2d, 0x2f, 0xff, 0x00, 0x00, 0x00, 0x00,
};
static int _tda10021_writereg (struct tda10021_state* state, u8 reg, u8 data)
{
u8 buf[] = { reg, data };
struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
int ret;
ret = i2c_transfer (state->i2c, &msg, 1);
if (ret != 1)
printk("DVB: TDA10021(%d): %s, writereg error "
"(reg == 0x%02x, val == 0x%02x, ret == %i)\n",
state->frontend.dvb->num, __FUNCTION__, reg, data, ret);
msleep(10);
return (ret != 1) ? -EREMOTEIO : 0;
}
static u8 tda10021_readreg (struct tda10021_state* state, u8 reg)
{
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 } };
int ret;
ret = i2c_transfer (state->i2c, msg, 2);
// Don't print an error message if the id is read.
if (ret != 2 && reg != 0x1a)
printk("DVB: TDA10021: %s: readreg error (ret == %i)\n",
__FUNCTION__, ret);
return b1[0];
}
//get access to tuner
static int lock_tuner(struct tda10021_state* state)
{
u8 buf[2] = { 0x0f, tda10021_inittab[0x0f] | 0x80 };
struct i2c_msg msg = {.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2};
if(i2c_transfer(state->i2c, &msg, 1) != 1)
{
printk("tda10021: lock tuner fails\n");
return -EREMOTEIO;
}
return 0;
}
//release access from tuner
static int unlock_tuner(struct tda10021_state* state)
{
u8 buf[2] = { 0x0f, tda10021_inittab[0x0f] & 0x7f };
struct i2c_msg msg_post={.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2};
if(i2c_transfer(state->i2c, &msg_post, 1) != 1)
{
printk("tda10021: unlock tuner fails\n");
return -EREMOTEIO;
}
return 0;
}
static int tda10021_setup_reg0 (struct tda10021_state* state, u8 reg0,
fe_spectral_inversion_t inversion)
{
reg0 |= state->reg0 & 0x63;
if ((INVERSION_ON == inversion) ^ (state->config->invert == 0))
reg0 &= ~0x20;
else
reg0 |= 0x20;
_tda10021_writereg (state, 0x00, reg0 & 0xfe);
_tda10021_writereg (state, 0x00, reg0 | 0x01);
state->reg0 = reg0;
return 0;
}
static int tda10021_set_symbolrate (struct tda10021_state* state, u32 symbolrate)
{
s32 BDR;
s32 BDRI;
s16 SFIL=0;
u16 NDEC = 0;
u32 tmp, ratio;
if (symbolrate > XIN/2)
symbolrate = XIN/2;
if (symbolrate < 500000)
symbolrate = 500000;
if (symbolrate < XIN/16) NDEC = 1;
if (symbolrate < XIN/32) NDEC = 2;
if (symbolrate < XIN/64) NDEC = 3;
if (symbolrate < (u32)(XIN/12.3)) SFIL = 1;
if (symbolrate < (u32)(XIN/16)) SFIL = 0;
if (symbolrate < (u32)(XIN/24.6)) SFIL = 1;
if (symbolrate < (u32)(XIN/32)) SFIL = 0;
if (symbolrate < (u32)(XIN/49.2)) SFIL = 1;
if (symbolrate < (u32)(XIN/64)) SFIL = 0;
if (symbolrate < (u32)(XIN/98.4)) SFIL = 1;
symbolrate <<= NDEC;
ratio = (symbolrate << 4) / FIN;
tmp = ((symbolrate << 4) % FIN) << 8;
ratio = (ratio << 8) + tmp / FIN;
tmp = (tmp % FIN) << 8;
ratio = (ratio << 8) + (tmp + FIN/2) / FIN;
BDR = ratio;
BDRI = (((XIN << 5) / symbolrate) + 1) / 2;
if (BDRI > 0xFF)
BDRI = 0xFF;
SFIL = (SFIL << 4) | tda10021_inittab[0x0E];
NDEC = (NDEC << 6) | tda10021_inittab[0x03];
_tda10021_writereg (state, 0x03, NDEC);
_tda10021_writereg (state, 0x0a, BDR&0xff);
_tda10021_writereg (state, 0x0b, (BDR>> 8)&0xff);
_tda10021_writereg (state, 0x0c, (BDR>>16)&0x3f);
_tda10021_writereg (state, 0x0d, BDRI);
_tda10021_writereg (state, 0x0e, SFIL);
return 0;
}
static int tda10021_init (struct dvb_frontend *fe)
{
struct tda10021_state* state = fe->demodulator_priv;
int i;
dprintk("DVB: TDA10021(%d): init chip\n", fe->adapter->num);
//_tda10021_writereg (fe, 0, 0);
for (i=0; i<tda10021_inittab_size; i++)
_tda10021_writereg (state, i, tda10021_inittab[i]);
_tda10021_writereg (state, 0x34, state->pwm);
//Comment by markus
//0x2A[3-0] == PDIV -> P multiplaying factor (P=PDIV+1)(default 0)
//0x2A[4] == BYPPLL -> Power down mode (default 1)
//0x2A[5] == LCK -> PLL Lock Flag
//0x2A[6] == POLAXIN -> Polarity of the input reference clock (default 0)
//Activate PLL
_tda10021_writereg(state, 0x2a, tda10021_inittab[0x2a] & 0xef);
return 0;
}
static int tda10021_set_parameters (struct dvb_frontend *fe,
struct dvb_frontend_parameters *p)
{
struct tda10021_state* state = fe->demodulator_priv;
//table for QAM4-QAM256 ready QAM4 QAM16 QAM32 QAM64 QAM128 QAM256
//CONF
static const u8 reg0x00 [] = { 0x14, 0x00, 0x04, 0x08, 0x0c, 0x10 };
//AGCREF value
static const u8 reg0x01 [] = { 0x78, 0x8c, 0x8c, 0x6a, 0x78, 0x5c };
//LTHR value
static const u8 reg0x05 [] = { 0x78, 0x87, 0x64, 0x46, 0x36, 0x26 };
//MSETH
static const u8 reg0x08 [] = { 0x8c, 0xa2, 0x74, 0x43, 0x34, 0x23 };
//AREF
static const u8 reg0x09 [] = { 0x96, 0x91, 0x96, 0x6a, 0x7e, 0x6b };
int qam = p->u.qam.modulation;
if (qam < 0 || qam > 5)
return -EINVAL;
if (p->inversion != INVERSION_ON && p->inversion != INVERSION_OFF)
return -EINVAL;
//printk("tda10021: set frequency to %d qam=%d symrate=%d\n", p->frequency,qam,p->u.qam.symbol_rate);
if (fe->ops.tuner_ops.set_params) {
fe->ops.tuner_ops.set_params(fe, p);
if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
}
tda10021_set_symbolrate (state, p->u.qam.symbol_rate);
_tda10021_writereg (state, 0x34, state->pwm);
_tda10021_writereg (state, 0x01, reg0x01[qam]);
_tda10021_writereg (state, 0x05, reg0x05[qam]);
_tda10021_writereg (state, 0x08, reg0x08[qam]);
_tda10021_writereg (state, 0x09, reg0x09[qam]);
tda10021_setup_reg0 (state, reg0x00[qam], p->inversion);
return 0;
}
static int tda10021_read_status(struct dvb_frontend* fe, fe_status_t* status)
{
struct tda10021_state* state = fe->demodulator_priv;
int sync;
*status = 0;
//0x11[0] == EQALGO -> Equalizer algorithms state
//0x11[1] == CARLOCK -> Carrier locked
//0x11[2] == FSYNC -> Frame synchronisation
//0x11[3] == FEL -> Front End locked
//0x11[6] == NODVB -> DVB Mode Information
sync = tda10021_readreg (state, 0x11);
if (sync & 2)
*status |= FE_HAS_SIGNAL|FE_HAS_CARRIER;
if (sync & 4)
*status |= FE_HAS_SYNC|FE_HAS_VITERBI;
if (sync & 8)
*status |= FE_HAS_LOCK;
return 0;
}
static int tda10021_read_ber(struct dvb_frontend* fe, u32* ber)
{
struct tda10021_state* state = fe->demodulator_priv;
u32 _ber = tda10021_readreg(state, 0x14) |
(tda10021_readreg(state, 0x15) << 8) |
((tda10021_readreg(state, 0x16) & 0x0f) << 16);
*ber = 10 * _ber;
return 0;
}
static int tda10021_read_signal_strength(struct dvb_frontend* fe, u16* strength)
{
struct tda10021_state* state = fe->demodulator_priv;
u8 gain = tda10021_readreg(state, 0x17);
*strength = (gain << 8) | gain;
return 0;
}
static int tda10021_read_snr(struct dvb_frontend* fe, u16* snr)
{
struct tda10021_state* state = fe->demodulator_priv;
u8 quality = ~tda10021_readreg(state, 0x18);
*snr = (quality << 8) | quality;
return 0;
}
static int tda10021_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
struct tda10021_state* state = fe->demodulator_priv;
*ucblocks = tda10021_readreg (state, 0x13) & 0x7f;
if (*ucblocks == 0x7f)
*ucblocks = 0xffffffff;
/* reset uncorrected block counter */
_tda10021_writereg (state, 0x10, tda10021_inittab[0x10] & 0xdf);
_tda10021_writereg (state, 0x10, tda10021_inittab[0x10]);
return 0;
}
static int tda10021_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
{
struct tda10021_state* state = fe->demodulator_priv;
int sync;
s8 afc = 0;
sync = tda10021_readreg(state, 0x11);
afc = tda10021_readreg(state, 0x19);
if (verbose) {
/* AFC only valid when carrier has been recovered */
printk(sync & 2 ? "DVB: TDA10021(%d): AFC (%d) %dHz\n" :
"DVB: TDA10021(%d): [AFC (%d) %dHz]\n",
state->frontend.dvb->num, afc,
-((s32)p->u.qam.symbol_rate * afc) >> 10);
}
p->inversion = ((state->reg0 & 0x20) == 0x20) ^ (state->config->invert != 0) ? INVERSION_ON : INVERSION_OFF;
p->u.qam.modulation = ((state->reg0 >> 2) & 7) + QAM_16;
p->u.qam.fec_inner = FEC_NONE;
p->frequency = ((p->frequency + 31250) / 62500) * 62500;
if (sync & 2)
p->frequency -= ((s32)p->u.qam.symbol_rate * afc) >> 10;
return 0;
}
static int tda10021_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
{
struct tda10021_state* state = fe->demodulator_priv;
if (enable) {
lock_tuner(state);
} else {
unlock_tuner(state);
}
return 0;
}
static int tda10021_sleep(struct dvb_frontend* fe)
{
struct tda10021_state* state = fe->demodulator_priv;
_tda10021_writereg (state, 0x1b, 0x02); /* pdown ADC */
_tda10021_writereg (state, 0x00, 0x80); /* standby */
return 0;
}
static void tda10021_release(struct dvb_frontend* fe)
{
struct tda10021_state* state = fe->demodulator_priv;
kfree(state);
}
static struct dvb_frontend_ops tda10021_ops;
struct dvb_frontend* tda10021_attach(const struct tda1002x_config* config,
struct i2c_adapter* i2c,
u8 pwm)
{
struct tda10021_state* state = NULL;
u8 id;
/* allocate memory for the internal state */
state = kmalloc(sizeof(struct tda10021_state), GFP_KERNEL);
if (state == NULL) goto error;
/* setup the state */
state->config = config;
state->i2c = i2c;
state->pwm = pwm;
state->reg0 = tda10021_inittab[0];
/* check if the demod is there */
id = tda10021_readreg(state, 0x1a);
if ((id & 0xf0) != 0x70) goto error;
printk("TDA10021: i2c-addr = 0x%02x, id = 0x%02x\n",
state->config->demod_address, id);
/* create dvb_frontend */
memcpy(&state->frontend.ops, &tda10021_ops, sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
kfree(state);
return NULL;
}
static struct dvb_frontend_ops tda10021_ops = {
.info = {
.name = "Philips TDA10021 DVB-C",
.type = FE_QAM,
.frequency_stepsize = 62500,
.frequency_min = 51000000,
.frequency_max = 858000000,
.symbol_rate_min = (XIN/2)/64, /* SACLK/64 == (XIN/2)/64 */
.symbol_rate_max = (XIN/2)/4, /* SACLK/4 */
#if 0
.frequency_tolerance = ???,
.symbol_rate_tolerance = ???, /* ppm */ /* == 8% (spec p. 5) */
#endif
.caps = 0x400 | //FE_CAN_QAM_4
FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
FE_CAN_QAM_128 | FE_CAN_QAM_256 |
FE_CAN_FEC_AUTO
},
.release = tda10021_release,
.init = tda10021_init,
.sleep = tda10021_sleep,
.i2c_gate_ctrl = tda10021_i2c_gate_ctrl,
.set_frontend = tda10021_set_parameters,
.get_frontend = tda10021_get_frontend,
.read_status = tda10021_read_status,
.read_ber = tda10021_read_ber,
.read_signal_strength = tda10021_read_signal_strength,
.read_snr = tda10021_read_snr,
.read_ucblocks = tda10021_read_ucblocks,
};
module_param(verbose, int, 0644);
MODULE_PARM_DESC(verbose, "print AFC offset after tuning for debugging the PWM setting");
MODULE_DESCRIPTION("Philips TDA10021 DVB-C demodulator driver");
MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Markus Schulz");
MODULE_LICENSE("GPL");
EXPORT_SYMBOL(tda10021_attach);