forked from luck/tmp_suning_uos_patched
dea74869f3
The dvb_frontend_ops is a pointer inside dvb_frontend. That's why every demod-driver is having a field of dvb_frontend_ops in its private-state-struct and using the reference for filling the pointer-field in dvb_frontend. - It saves at least two lines of code per demod-driver, - reduces object size (one less dereference per frontend_ops-access), - be coherent with dvb_tuner_ops, - makes it a little bit easier for newbies to understand how it works and - avoids stupid mistakes because you would have to copy the dvb_frontend_ops always, before you could assign the static pointer directly, which was dangerous. Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
458 lines
11 KiB
C
458 lines
11 KiB
C
/*
|
|
Driver for Philips TDA8083 based QPSK Demodulator
|
|
|
|
Copyright (C) 2001 Convergence Integrated Media GmbH
|
|
|
|
written by Ralph Metzler <ralph@convergence.de>
|
|
|
|
adoption to the new DVB frontend API and diagnostic ioctl's
|
|
by Holger Waechtler <holger@convergence.de>
|
|
|
|
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 <linux/string.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/jiffies.h>
|
|
#include "dvb_frontend.h"
|
|
#include "tda8083.h"
|
|
|
|
|
|
struct tda8083_state {
|
|
struct i2c_adapter* i2c;
|
|
/* configuration settings */
|
|
const struct tda8083_config* config;
|
|
struct dvb_frontend frontend;
|
|
};
|
|
|
|
static int debug;
|
|
#define dprintk(args...) \
|
|
do { \
|
|
if (debug) printk(KERN_DEBUG "tda8083: " args); \
|
|
} while (0)
|
|
|
|
|
|
static u8 tda8083_init_tab [] = {
|
|
0x04, 0x00, 0x4a, 0x79, 0x04, 0x00, 0xff, 0xea,
|
|
0x48, 0x42, 0x79, 0x60, 0x70, 0x52, 0x9a, 0x10,
|
|
0x0e, 0x10, 0xf2, 0xa7, 0x93, 0x0b, 0x05, 0xc8,
|
|
0x9d, 0x00, 0x42, 0x80, 0x00, 0x60, 0x40, 0x00,
|
|
0x00, 0x75, 0x00, 0xe0, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
|
|
static int tda8083_writereg (struct tda8083_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 %02x, ret == %i)\n",
|
|
__FUNCTION__, reg, ret);
|
|
|
|
return (ret != 1) ? -1 : 0;
|
|
}
|
|
|
|
static int tda8083_readregs (struct tda8083_state* state, u8 reg1, u8 *b, u8 len)
|
|
{
|
|
int ret;
|
|
struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = ®1, .len = 1 },
|
|
{ .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b, .len = len } };
|
|
|
|
ret = i2c_transfer(state->i2c, msg, 2);
|
|
|
|
if (ret != 2)
|
|
dprintk ("%s: readreg error (reg %02x, ret == %i)\n",
|
|
__FUNCTION__, reg1, ret);
|
|
|
|
return ret == 2 ? 0 : -1;
|
|
}
|
|
|
|
static inline u8 tda8083_readreg (struct tda8083_state* state, u8 reg)
|
|
{
|
|
u8 val;
|
|
|
|
tda8083_readregs (state, reg, &val, 1);
|
|
|
|
return val;
|
|
}
|
|
|
|
static int tda8083_set_inversion (struct tda8083_state* state, fe_spectral_inversion_t inversion)
|
|
{
|
|
/* XXX FIXME: implement other modes than FEC_AUTO */
|
|
if (inversion == INVERSION_AUTO)
|
|
return 0;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int tda8083_set_fec (struct tda8083_state* state, fe_code_rate_t fec)
|
|
{
|
|
if (fec == FEC_AUTO)
|
|
return tda8083_writereg (state, 0x07, 0xff);
|
|
|
|
if (fec >= FEC_1_2 && fec <= FEC_8_9)
|
|
return tda8083_writereg (state, 0x07, 1 << (FEC_8_9 - fec));
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static fe_code_rate_t tda8083_get_fec (struct tda8083_state* state)
|
|
{
|
|
u8 index;
|
|
static fe_code_rate_t fec_tab [] = { FEC_8_9, FEC_1_2, FEC_2_3, FEC_3_4,
|
|
FEC_4_5, FEC_5_6, FEC_6_7, FEC_7_8 };
|
|
|
|
index = tda8083_readreg(state, 0x0e) & 0x07;
|
|
|
|
return fec_tab [index];
|
|
}
|
|
|
|
static int tda8083_set_symbolrate (struct tda8083_state* state, u32 srate)
|
|
{
|
|
u32 ratio;
|
|
u32 tmp;
|
|
u8 filter;
|
|
|
|
if (srate > 32000000)
|
|
srate = 32000000;
|
|
if (srate < 500000)
|
|
srate = 500000;
|
|
|
|
filter = 0;
|
|
if (srate < 24000000)
|
|
filter = 2;
|
|
if (srate < 16000000)
|
|
filter = 3;
|
|
|
|
tmp = 31250 << 16;
|
|
ratio = tmp / srate;
|
|
|
|
tmp = (tmp % srate) << 8;
|
|
ratio = (ratio << 8) + tmp / srate;
|
|
|
|
tmp = (tmp % srate) << 8;
|
|
ratio = (ratio << 8) + tmp / srate;
|
|
|
|
dprintk("tda8083: ratio == %08x\n", (unsigned int) ratio);
|
|
|
|
tda8083_writereg (state, 0x05, filter);
|
|
tda8083_writereg (state, 0x02, (ratio >> 16) & 0xff);
|
|
tda8083_writereg (state, 0x03, (ratio >> 8) & 0xff);
|
|
tda8083_writereg (state, 0x04, (ratio ) & 0xff);
|
|
|
|
tda8083_writereg (state, 0x00, 0x3c);
|
|
tda8083_writereg (state, 0x00, 0x04);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void tda8083_wait_diseqc_fifo (struct tda8083_state* state, int timeout)
|
|
{
|
|
unsigned long start = jiffies;
|
|
|
|
while (jiffies - start < timeout &&
|
|
!(tda8083_readreg(state, 0x02) & 0x80))
|
|
{
|
|
msleep(50);
|
|
};
|
|
}
|
|
|
|
static int tda8083_set_tone (struct tda8083_state* state, fe_sec_tone_mode_t tone)
|
|
{
|
|
tda8083_writereg (state, 0x26, 0xf1);
|
|
|
|
switch (tone) {
|
|
case SEC_TONE_OFF:
|
|
return tda8083_writereg (state, 0x29, 0x00);
|
|
case SEC_TONE_ON:
|
|
return tda8083_writereg (state, 0x29, 0x80);
|
|
default:
|
|
return -EINVAL;
|
|
};
|
|
}
|
|
|
|
static int tda8083_set_voltage (struct tda8083_state* state, fe_sec_voltage_t voltage)
|
|
{
|
|
switch (voltage) {
|
|
case SEC_VOLTAGE_13:
|
|
return tda8083_writereg (state, 0x20, 0x00);
|
|
case SEC_VOLTAGE_18:
|
|
return tda8083_writereg (state, 0x20, 0x11);
|
|
default:
|
|
return -EINVAL;
|
|
};
|
|
}
|
|
|
|
static int tda8083_send_diseqc_burst (struct tda8083_state* state, fe_sec_mini_cmd_t burst)
|
|
{
|
|
switch (burst) {
|
|
case SEC_MINI_A:
|
|
tda8083_writereg (state, 0x29, (5 << 2)); /* send burst A */
|
|
break;
|
|
case SEC_MINI_B:
|
|
tda8083_writereg (state, 0x29, (7 << 2)); /* send B */
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
};
|
|
|
|
tda8083_wait_diseqc_fifo (state, 100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_send_diseqc_msg (struct dvb_frontend* fe,
|
|
struct dvb_diseqc_master_cmd *m)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
int i;
|
|
|
|
tda8083_writereg (state, 0x29, (m->msg_len - 3) | (1 << 2)); /* enable */
|
|
|
|
for (i=0; i<m->msg_len; i++)
|
|
tda8083_writereg (state, 0x23 + i, m->msg[i]);
|
|
|
|
tda8083_writereg (state, 0x29, (m->msg_len - 3) | (3 << 2)); /* send!! */
|
|
|
|
tda8083_wait_diseqc_fifo (state, 100);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_read_status(struct dvb_frontend* fe, fe_status_t* status)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
u8 signal = ~tda8083_readreg (state, 0x01);
|
|
u8 sync = tda8083_readreg (state, 0x02);
|
|
|
|
*status = 0;
|
|
|
|
if (signal > 10)
|
|
*status |= FE_HAS_SIGNAL;
|
|
|
|
if (sync & 0x01)
|
|
*status |= FE_HAS_CARRIER;
|
|
|
|
if (sync & 0x02)
|
|
*status |= FE_HAS_VITERBI;
|
|
|
|
if (sync & 0x10)
|
|
*status |= FE_HAS_SYNC;
|
|
|
|
if ((sync & 0x1f) == 0x1f)
|
|
*status |= FE_HAS_LOCK;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_read_signal_strength(struct dvb_frontend* fe, u16* strength)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
u8 signal = ~tda8083_readreg (state, 0x01);
|
|
*strength = (signal << 8) | signal;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_read_snr(struct dvb_frontend* fe, u16* snr)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
u8 _snr = tda8083_readreg (state, 0x08);
|
|
*snr = (_snr << 8) | _snr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
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);
|
|
}
|
|
|
|
tda8083_set_inversion (state, p->inversion);
|
|
tda8083_set_fec (state, p->u.qpsk.fec_inner);
|
|
tda8083_set_symbolrate (state, p->u.qpsk.symbol_rate);
|
|
|
|
tda8083_writereg (state, 0x00, 0x3c);
|
|
tda8083_writereg (state, 0x00, 0x04);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
/* FIXME: get symbolrate & frequency offset...*/
|
|
/*p->frequency = ???;*/
|
|
p->inversion = (tda8083_readreg (state, 0x0e) & 0x80) ?
|
|
INVERSION_ON : INVERSION_OFF;
|
|
p->u.qpsk.fec_inner = tda8083_get_fec (state);
|
|
/*p->u.qpsk.symbol_rate = tda8083_get_symbolrate (state);*/
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_sleep(struct dvb_frontend* fe)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
tda8083_writereg (state, 0x00, 0x02);
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_init(struct dvb_frontend* fe)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
int i;
|
|
|
|
for (i=0; i<44; i++)
|
|
tda8083_writereg (state, i, tda8083_init_tab[i]);
|
|
|
|
tda8083_writereg (state, 0x00, 0x3c);
|
|
tda8083_writereg (state, 0x00, 0x04);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_diseqc_send_burst(struct dvb_frontend* fe, fe_sec_mini_cmd_t burst)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
tda8083_send_diseqc_burst (state, burst);
|
|
tda8083_writereg (state, 0x00, 0x3c);
|
|
tda8083_writereg (state, 0x00, 0x04);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_diseqc_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
tda8083_set_tone (state, tone);
|
|
tda8083_writereg (state, 0x00, 0x3c);
|
|
tda8083_writereg (state, 0x00, 0x04);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tda8083_diseqc_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
|
|
tda8083_set_voltage (state, voltage);
|
|
tda8083_writereg (state, 0x00, 0x3c);
|
|
tda8083_writereg (state, 0x00, 0x04);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tda8083_release(struct dvb_frontend* fe)
|
|
{
|
|
struct tda8083_state* state = fe->demodulator_priv;
|
|
kfree(state);
|
|
}
|
|
|
|
static struct dvb_frontend_ops tda8083_ops;
|
|
|
|
struct dvb_frontend* tda8083_attach(const struct tda8083_config* config,
|
|
struct i2c_adapter* i2c)
|
|
{
|
|
struct tda8083_state* state = NULL;
|
|
|
|
/* allocate memory for the internal state */
|
|
state = kmalloc(sizeof(struct tda8083_state), GFP_KERNEL);
|
|
if (state == NULL) goto error;
|
|
|
|
/* setup the state */
|
|
state->config = config;
|
|
state->i2c = i2c;
|
|
|
|
/* check if the demod is there */
|
|
if ((tda8083_readreg(state, 0x00)) != 0x05) goto error;
|
|
|
|
/* create dvb_frontend */
|
|
memcpy(&state->frontend.ops, &tda8083_ops, sizeof(struct dvb_frontend_ops));
|
|
state->frontend.demodulator_priv = state;
|
|
return &state->frontend;
|
|
|
|
error:
|
|
kfree(state);
|
|
return NULL;
|
|
}
|
|
|
|
static struct dvb_frontend_ops tda8083_ops = {
|
|
|
|
.info = {
|
|
.name = "Philips TDA8083 DVB-S",
|
|
.type = FE_QPSK,
|
|
.frequency_min = 950000, /* FIXME: guessed! */
|
|
.frequency_max = 1400000, /* FIXME: guessed! */
|
|
.frequency_stepsize = 125, /* kHz for QPSK frontends */
|
|
/* .frequency_tolerance = ???,*/
|
|
.symbol_rate_min = 1000000, /* FIXME: guessed! */
|
|
.symbol_rate_max = 45000000, /* FIXME: guessed! */
|
|
/* .symbol_rate_tolerance = ???,*/
|
|
.caps = FE_CAN_INVERSION_AUTO |
|
|
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
|
|
FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
|
|
FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
|
|
FE_CAN_QPSK | FE_CAN_MUTE_TS
|
|
},
|
|
|
|
.release = tda8083_release,
|
|
|
|
.init = tda8083_init,
|
|
.sleep = tda8083_sleep,
|
|
|
|
.set_frontend = tda8083_set_frontend,
|
|
.get_frontend = tda8083_get_frontend,
|
|
|
|
.read_status = tda8083_read_status,
|
|
.read_signal_strength = tda8083_read_signal_strength,
|
|
.read_snr = tda8083_read_snr,
|
|
|
|
.diseqc_send_master_cmd = tda8083_send_diseqc_msg,
|
|
.diseqc_send_burst = tda8083_diseqc_send_burst,
|
|
.set_tone = tda8083_diseqc_set_tone,
|
|
.set_voltage = tda8083_diseqc_set_voltage,
|
|
};
|
|
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
|
|
|
|
MODULE_DESCRIPTION("Philips TDA8083 DVB-S Demodulator");
|
|
MODULE_AUTHOR("Ralph Metzler, Holger Waechtler");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
EXPORT_SYMBOL(tda8083_attach);
|