kevin/linux
1
Fork 0
Code
b4d6046e84
linux/drivers/media/dvb/frontends/stv0288.c
Malcolm Priestley 352a587ccd [media] DiSEqC bug fixed for stv0288 based interfaces 
Fixed problem with DiSEqC communication. The message was wrongly modulated,
so the DiSEqC switch was not work.

This patch fixes DiSEqC messages, simple tone burst and tone on/off.
I verified it with osciloscope against the DiSEqC documentation.

Interface: PCI DVB-S TV tuner TeVii S420
Kernel: 2.6.32-24-generic (UBUNTU 10.4)

Signed-off-by: Josef Pavlik <josef@pavlik.it>
Tested-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21 07:55:58 -02:00

622 lines
14 KiB
C
Raw Blame History

/*
Driver for ST STV0288 demodulator
Copyright (C) 2006 Georg Acher, BayCom GmbH, acher (at) baycom (dot) de
for Reel Multimedia
Copyright (C) 2008 TurboSight.com, Bob Liu <bob@turbosight.com>
Copyright (C) 2008 Igor M. Liplianin <liplianin@me.by>
Removed stb6000 specific tuner code and revised some
procedures.
2010-09-01 Josef Pavlik <josef@pavlik.it>
Fixed diseqc_msg, diseqc_burst and set_tone problems
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/string.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <asm/div64.h>
#include "dvb_frontend.h"
#include "stv0288.h"
struct stv0288_state {
struct i2c_adapter *i2c;
const struct stv0288_config *config;
struct dvb_frontend frontend;
u8 initialised:1;
u32 tuner_frequency;
u32 symbol_rate;
fe_code_rate_t fec_inner;
int errmode;
};
#define STATUS_BER 0
#define STATUS_UCBLOCKS 1
static int debug;
static int debug_legacy_dish_switch;
#define dprintk(args...) \
do { \
if (debug) \
printk(KERN_DEBUG "stv0288: " args); \
} while (0)
static int stv0288_writeregI(struct stv0288_state *state, u8 reg, u8 data)
{
int ret;
u8 buf[] = { reg, data };
struct i2c_msg msg = {
.addr = state->config->demod_address,
.flags = 0,
.buf = buf,
.len = 2
};
ret = i2c_transfer(state->i2c, &msg, 1);
if (ret != 1)
dprintk("%s: writereg error (reg == 0x%02x, val == 0x%02x, "
"ret == %i)\n", __func__, reg, data, ret);
return (ret != 1) ? -EREMOTEIO : 0;
}
static int stv0288_write(struct dvb_frontend *fe, const u8 buf[], int len)
{
struct stv0288_state *state = fe->demodulator_priv;
if (len != 2)
return -EINVAL;
return stv0288_writeregI(state, buf[0], buf[1]);
}
static u8 stv0288_readreg(struct stv0288_state *state, u8 reg)
{
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, msg, 2);
if (ret != 2)
dprintk("%s: readreg error (reg == 0x%02x, ret == %i)\n",
__func__, reg, ret);
return b1[0];
}
static int stv0288_set_symbolrate(struct dvb_frontend *fe, u32 srate)
{
struct stv0288_state *state = fe->demodulator_priv;
unsigned int temp;
unsigned char b[3];
if ((srate < 1000000) || (srate > 45000000))
return -EINVAL;
temp = (unsigned int)srate / 1000;
temp = temp * 32768;
temp = temp / 25;
temp = temp / 125;
b[0] = (unsigned char)((temp >> 12) & 0xff);
b[1] = (unsigned char)((temp >> 4) & 0xff);
b[2] = (unsigned char)((temp << 4) & 0xf0);
stv0288_writeregI(state, 0x28, 0x80); /* SFRH */
stv0288_writeregI(state, 0x29, 0); /* SFRM */
stv0288_writeregI(state, 0x2a, 0); /* SFRL */
stv0288_writeregI(state, 0x28, b[0]);
stv0288_writeregI(state, 0x29, b[1]);
stv0288_writeregI(state, 0x2a, b[2]);
dprintk("stv0288: stv0288_set_symbolrate\n");
return 0;
}
static int stv0288_send_diseqc_msg(struct dvb_frontend *fe,
struct dvb_diseqc_master_cmd *m)
{
struct stv0288_state *state = fe->demodulator_priv;
int i;
dprintk("%s\n", __func__);
stv0288_writeregI(state, 0x09, 0);
msleep(30);
stv0288_writeregI(state, 0x05, 0x12);/* modulated mode, single shot */
for (i = 0; i < m->msg_len; i++) {
if (stv0288_writeregI(state, 0x06, m->msg[i]))
return -EREMOTEIO;
}
msleep(m->msg_len*12);
return 0;
}
static int stv0288_send_diseqc_burst(struct dvb_frontend *fe,
fe_sec_mini_cmd_t burst)
{
struct stv0288_state *state = fe->demodulator_priv;
dprintk("%s\n", __func__);
if (stv0288_writeregI(state, 0x05, 0x03))/* burst mode, single shot */
return -EREMOTEIO;
if (stv0288_writeregI(state, 0x06, burst == SEC_MINI_A ? 0x00 : 0xff))
return -EREMOTEIO;
msleep(15);
if (stv0288_writeregI(state, 0x05, 0x12))
return -EREMOTEIO;
return 0;
}
static int stv0288_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
{
struct stv0288_state *state = fe->demodulator_priv;
switch (tone) {
case SEC_TONE_ON:
if (stv0288_writeregI(state, 0x05, 0x10))/* cont carrier */
return -EREMOTEIO;
break;
case SEC_TONE_OFF:
if (stv0288_writeregI(state, 0x05, 0x12))/* burst mode off*/
return -EREMOTEIO;
break;
default:
return -EINVAL;
}
return 0;
}
static u8 stv0288_inittab[] = {
0x01, 0x15,
0x02, 0x20,
0x09, 0x0,
0x0a, 0x4,
0x0b, 0x0,
0x0c, 0x0,
0x0d, 0x0,
0x0e, 0xd4,
0x0f, 0x30,
0x11, 0x80,
0x12, 0x03,
0x13, 0x48,
0x14, 0x84,
0x15, 0x45,
0x16, 0xb7,
0x17, 0x9c,
0x18, 0x0,
0x19, 0xa6,
0x1a, 0x88,
0x1b, 0x8f,
0x1c, 0xf0,
0x20, 0x0b,
0x21, 0x54,
0x22, 0x0,
0x23, 0x0,
0x2b, 0xff,
0x2c, 0xf7,
0x30, 0x0,
0x31, 0x1e,
0x32, 0x14,
0x33, 0x0f,
0x34, 0x09,
0x35, 0x0c,
0x36, 0x05,
0x37, 0x2f,
0x38, 0x16,
0x39, 0xbe,
0x3a, 0x0,
0x3b, 0x13,
0x3c, 0x11,
0x3d, 0x30,
0x40, 0x63,
0x41, 0x04,
0x42, 0x60,
0x43, 0x00,
0x44, 0x00,
0x45, 0x00,
0x46, 0x00,
0x47, 0x00,
0x4a, 0x00,
0x50, 0x10,
0x51, 0x38,
0x52, 0x21,
0x58, 0x54,
0x59, 0x86,
0x5a, 0x0,
0x5b, 0x9b,
0x5c, 0x08,
0x5d, 0x7f,
0x5e, 0x0,
0x5f, 0xff,
0x70, 0x0,
0x71, 0x0,
0x72, 0x0,
0x74, 0x0,
0x75, 0x0,
0x76, 0x0,
0x81, 0x0,
0x82, 0x3f,
0x83, 0x3f,
0x84, 0x0,
0x85, 0x0,
0x88, 0x0,
0x89, 0x0,
0x8a, 0x0,
0x8b, 0x0,
0x8c, 0x0,
0x90, 0x0,
0x91, 0x0,
0x92, 0x0,
0x93, 0x0,
0x94, 0x1c,
0x97, 0x0,
0xa0, 0x48,
0xa1, 0x0,
0xb0, 0xb8,
0xb1, 0x3a,
0xb2, 0x10,
0xb3, 0x82,
0xb4, 0x80,
0xb5, 0x82,
0xb6, 0x82,
0xb7, 0x82,
0xb8, 0x20,
0xb9, 0x0,
0xf0, 0x0,
0xf1, 0x0,
0xf2, 0xc0,
0x51, 0x36,
0x52, 0x09,
0x53, 0x94,
0x54, 0x62,
0x55, 0x29,
0x56, 0x64,
0x57, 0x2b,
0xff, 0xff,
};
static int stv0288_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t volt)
{
dprintk("%s: %s\n", __func__,
volt == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
volt == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??");
return 0;
}
static int stv0288_init(struct dvb_frontend *fe)
{
struct stv0288_state *state = fe->demodulator_priv;
int i;
u8 reg;
u8 val;
dprintk("stv0288: init chip\n");
stv0288_writeregI(state, 0x41, 0x04);
msleep(50);
/* we have default inittab */
if (state->config->inittab == NULL) {
for (i = 0; !(stv0288_inittab[i] == 0xff &&
stv0288_inittab[i + 1] == 0xff); i += 2)
stv0288_writeregI(state, stv0288_inittab[i],
stv0288_inittab[i + 1]);
} else {
for (i = 0; ; i += 2) {
reg = state->config->inittab[i];
val = state->config->inittab[i+1];
if (reg == 0xff && val == 0xff)
break;
stv0288_writeregI(state, reg, val);
}
}
return 0;
}
static int stv0288_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct stv0288_state *state = fe->demodulator_priv;
u8 sync = stv0288_readreg(state, 0x24);
if (sync == 255)
sync = 0;
dprintk("%s : FE_READ_STATUS : VSTATUS: 0x%02x\n", __func__, sync);
*status = 0;
if ((sync & 0x08) == 0x08) {
*status |= FE_HAS_LOCK;
dprintk("stv0288 has locked\n");
}
return 0;
}
static int stv0288_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct stv0288_state *state = fe->demodulator_priv;
if (state->errmode != STATUS_BER)
return 0;
*ber = (stv0288_readreg(state, 0x26) << 8) |
stv0288_readreg(state, 0x27);
dprintk("stv0288_read_ber %d\n", *ber);
return 0;
}
static int stv0288_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct stv0288_state *state = fe->demodulator_priv;
s32 signal = 0xffff - ((stv0288_readreg(state, 0x10) << 8));
signal = signal * 5 / 4;
*strength = (signal > 0xffff) ? 0xffff : (signal < 0) ? 0 : signal;
dprintk("stv0288_read_signal_strength %d\n", *strength);
return 0;
}
static int stv0288_sleep(struct dvb_frontend *fe)
{
struct stv0288_state *state = fe->demodulator_priv;
stv0288_writeregI(state, 0x41, 0x84);
state->initialised = 0;
return 0;
}
static int stv0288_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct stv0288_state *state = fe->demodulator_priv;
s32 xsnr = 0xffff - ((stv0288_readreg(state, 0x2d) << 8)
| stv0288_readreg(state, 0x2e));
xsnr = 3 * (xsnr - 0xa100);
*snr = (xsnr > 0xffff) ? 0xffff : (xsnr < 0) ? 0 : xsnr;
dprintk("stv0288_read_snr %d\n", *snr);
return 0;
}
static int stv0288_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
struct stv0288_state *state = fe->demodulator_priv;
if (state->errmode != STATUS_BER)
return 0;
*ucblocks = (stv0288_readreg(state, 0x26) << 8) |
stv0288_readreg(state, 0x27);
dprintk("stv0288_read_ber %d\n", *ucblocks);
return 0;
}
static int stv0288_set_property(struct dvb_frontend *fe, struct dtv_property *p)
{
dprintk("%s(..)\n", __func__);
return 0;
}
static int stv0288_get_property(struct dvb_frontend *fe, struct dtv_property *p)
{
dprintk("%s(..)\n", __func__);
return 0;
}
static int stv0288_set_frontend(struct dvb_frontend *fe,
struct dvb_frontend_parameters *dfp)
{
struct stv0288_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
char tm;
unsigned char tda[3];
dprintk("%s : FE_SET_FRONTEND\n", __func__);
if (c->delivery_system != SYS_DVBS) {
dprintk("%s: unsupported delivery "
"system selected (%d)\n",
__func__, c->delivery_system);
return -EOPNOTSUPP;
}
if (state->config->set_ts_params)
state->config->set_ts_params(fe, 0);
/* only frequency & symbol_rate are used for tuner*/
dfp->frequency = c->frequency;
dfp->u.qpsk.symbol_rate = c->symbol_rate;
if (fe->ops.tuner_ops.set_params) {
fe->ops.tuner_ops.set_params(fe, dfp);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
}
udelay(10);
stv0288_set_symbolrate(fe, c->symbol_rate);
/* Carrier lock control register */
stv0288_writeregI(state, 0x15, 0xc5);
tda[0] = 0x2b; /* CFRM */
tda[2] = 0x0; /* CFRL */
for (tm = -6; tm < 7;) {
/* Viterbi status */
if (stv0288_readreg(state, 0x24) & 0x8)
break;
tda[2] += 40;
if (tda[2] < 40)
tm++;
tda[1] = (unsigned char)tm;
stv0288_writeregI(state, 0x2b, tda[1]);
stv0288_writeregI(state, 0x2c, tda[2]);
udelay(30);
}
state->tuner_frequency = c->frequency;
state->fec_inner = FEC_AUTO;
state->symbol_rate = c->symbol_rate;
return 0;
}
static int stv0288_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
struct stv0288_state *state = fe->demodulator_priv;
if (enable)
stv0288_writeregI(state, 0x01, 0xb5);
else
stv0288_writeregI(state, 0x01, 0x35);
udelay(1);
return 0;
}
static void stv0288_release(struct dvb_frontend *fe)
{
struct stv0288_state *state = fe->demodulator_priv;
kfree(state);
}
static struct dvb_frontend_ops stv0288_ops = {
.info = {
.name = "ST STV0288 DVB-S",
.type = FE_QPSK,
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_stepsize = 1000, /* kHz for QPSK frontends */
.frequency_tolerance = 0,
.symbol_rate_min = 1000000,
.symbol_rate_max = 45000000,
.symbol_rate_tolerance = 500, /* ppm */
.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 = stv0288_release,
.init = stv0288_init,
.sleep = stv0288_sleep,
.write = stv0288_write,
.i2c_gate_ctrl = stv0288_i2c_gate_ctrl,
.read_status = stv0288_read_status,
.read_ber = stv0288_read_ber,
.read_signal_strength = stv0288_read_signal_strength,
.read_snr = stv0288_read_snr,
.read_ucblocks = stv0288_read_ucblocks,
.diseqc_send_master_cmd = stv0288_send_diseqc_msg,
.diseqc_send_burst = stv0288_send_diseqc_burst,
.set_tone = stv0288_set_tone,
.set_voltage = stv0288_set_voltage,
.set_property = stv0288_set_property,
.get_property = stv0288_get_property,
.set_frontend = stv0288_set_frontend,
};
struct dvb_frontend *stv0288_attach(const struct stv0288_config *config,
struct i2c_adapter *i2c)
{
struct stv0288_state *state = NULL;
int id;
/* allocate memory for the internal state */
state = kzalloc(sizeof(struct stv0288_state), GFP_KERNEL);
if (state == NULL)
goto error;
/* setup the state */
state->config = config;
state->i2c = i2c;
state->initialised = 0;
state->tuner_frequency = 0;
state->symbol_rate = 0;
state->fec_inner = 0;
state->errmode = STATUS_BER;
stv0288_writeregI(state, 0x41, 0x04);
msleep(200);
id = stv0288_readreg(state, 0x00);
dprintk("stv0288 id %x\n", id);
/* register 0x00 contains 0x11 for STV0288 */
if (id != 0x11)
goto error;
/* create dvb_frontend */
memcpy(&state->frontend.ops, &stv0288_ops,
sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
kfree(state);
return NULL;
}
EXPORT_SYMBOL(stv0288_attach);
module_param(debug_legacy_dish_switch, int, 0444);
MODULE_PARM_DESC(debug_legacy_dish_switch,
"Enable timing analysis for Dish Network legacy switches");
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
MODULE_DESCRIPTION("ST STV0288 DVB Demodulator driver");
MODULE_AUTHOR("Georg Acher, Bob Liu, Igor liplianin");
MODULE_LICENSE("GPL");
View Git Blame Copy Permalink