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a867_af903x-fe.c
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a867_af903x-fe.c
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#include <linux/sched.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/version.h>
#include "a867_af903x.h"
#include "dvb_frontend.h"
#include "a867_standard.h"
#define A333_FREQ_MIN 44250000
#define A333_FREQ_MAX 867250000
DEFINE_MUTEX(mutex);
static int alwayslock; // default to 0
module_param(alwayslock, int, 0644);
MODULE_PARM_DESC(alwayslock, "Whether to always report channel as locked (default:no).");
struct af903xm_state {
struct dvb_frontend demod;
fe_bandwidth_t current_bandwidth;
uint32_t current_frequency;
struct completion thread_exit;
int thread_should_stop;
atomic_t thread_created;
u32 ucblocks;
u32 ber;
u16 strength;
int locked;
};
int test_map_snr(u32 snr_data, u16 *snr, u16 *maxsnr)
{
Dword error = 0;
Dword snr_value = 0;
Byte constellation = 0;
Byte transmission_mode = 0;
*maxsnr = 0;
*snr = 0;
/** Get constellation type */
error = Standard_readRegisterBits ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST,
Processor_OFDM, g_reg_tpsd_const, reg_tpsd_const_pos, reg_tpsd_const_len, &constellation);
if (error) goto exit;
/** Get FFT mode */
error = Standard_readRegisterBits ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST,
Processor_OFDM, g_reg_tpsd_txmod, reg_tpsd_txmod_pos, reg_tpsd_txmod_len, &transmission_mode);
if (error) goto exit;
// Adjust snr data by transmission mode
if (transmission_mode == 0)
snr_value = snr_data * 4;
else if (transmission_mode == 2)
snr_value = snr_data * 2;
else
snr_value = snr_data;
if( constellation == 0) //Constellation_QPSK
{
if(snr_value < 0xB4771) *snr = 0;
else if(snr_value < 0xC1AED) *snr = 1;
else if(snr_value < 0xD0D27) *snr = 2;
else if(snr_value < 0xE4D19) *snr = 3;
else if(snr_value < 0xE5DA8) *snr = 4;
else if(snr_value < 0x107097) *snr = 5;
else if(snr_value < 0x116975) *snr = 6;
else if(snr_value < 0x1252D9) *snr = 7;
else if(snr_value < 0x131FA4) *snr = 8;
else if(snr_value < 0x13D5E1) *snr = 9;
else if(snr_value < 0x148E53) *snr = 10;
else if(snr_value < 0x15358B) *snr = 11;
else if(snr_value < 0x15DD29) *snr = 12;
else if(snr_value < 0x168112) *snr = 13;
else if(snr_value < 0x170B61) *snr = 14;
else if(snr_value < 0x17A532) *snr = 15;
else if(snr_value < 0x180F94) *snr = 16;
else if(snr_value < 0x186ED2) *snr = 17;
else if(snr_value < 0x18B271) *snr = 18;
else if(snr_value < 0x18E118) *snr = 19;
else if(snr_value < 0x18FF4B) *snr = 20;
else if(snr_value < 0x190AF1) *snr = 21;
else if(snr_value < 0x191451) *snr = 22;
else *snr = 23;
*maxsnr = 23;
}
else if ( constellation == 1) //Constellation_16QAM
{
if(snr_value < 0x4F0D5) *snr = 0;
else if(snr_value < 0x5387A) *snr = 1;
else if(snr_value < 0x573A4) *snr = 2;
else if(snr_value < 0x5A99E) *snr = 3;
else if(snr_value < 0x5CC80) *snr = 4;
else if(snr_value < 0x5EB62) *snr = 5;
else if(snr_value < 0x5FECF) *snr = 6;
else if(snr_value < 0x60B80) *snr = 7;
else if(snr_value < 0x62501) *snr = 8;
else if(snr_value < 0x64865) *snr = 9;
else if(snr_value < 0x69604) *snr = 10;
else if(snr_value < 0x6F356) *snr = 11;
else if(snr_value < 0x7706A) *snr = 12;
else if(snr_value < 0x804D3) *snr = 13;
else if(snr_value < 0x89D1A) *snr = 14;
else if(snr_value < 0x93E3D) *snr = 15;
else if(snr_value < 0x9E35D) *snr = 16;
else if(snr_value < 0xA7C3C) *snr = 17;
else if(snr_value < 0xAFAF8) *snr = 18;
else if(snr_value < 0xB719D) *snr = 19;
else if(snr_value < 0xBDA6A) *snr = 20;
else if(snr_value < 0xC0C75) *snr = 21;
else if(snr_value < 0xC3F7D) *snr = 22;
else if(snr_value < 0xC5E62) *snr = 23;
else if(snr_value < 0xC6C31) *snr = 24;
else if(snr_value < 0xC7925) *snr = 25;
else *snr = 26;
*maxsnr = 26;
}
else if ( constellation == 2) //Constellation_64QAM
{
if(snr_value < 0x256D0) *snr = 0;
else if(snr_value < 0x27A65) *snr = 1;
else if(snr_value < 0x29873) *snr = 2;
else if(snr_value < 0x2B7FE) *snr = 3;
else if(snr_value < 0x2CF1E) *snr = 4;
else if(snr_value < 0x2E234) *snr = 5;
else if(snr_value < 0x2F409) *snr = 6;
else if(snr_value < 0x30046) *snr = 7;
else if(snr_value < 0x30844) *snr = 8;
else if(snr_value < 0x30A02) *snr = 9;
else if(snr_value < 0x30CDE) *snr = 10;
else if(snr_value < 0x31031) *snr = 11;
else if(snr_value < 0x3144C) *snr = 12;
else if(snr_value < 0x315DD) *snr = 13;
else if(snr_value < 0x31920) *snr = 14;
else if(snr_value < 0x322D0) *snr = 15;
else if(snr_value < 0x339FC) *snr = 16;
else if(snr_value < 0x364A1) *snr = 17;
else if(snr_value < 0x38BCC) *snr = 18;
else if(snr_value < 0x3C7D3) *snr = 19;
else if(snr_value < 0x408CC) *snr = 20;
else if(snr_value < 0x43BED) *snr = 21;
else if(snr_value < 0x48061) *snr = 22;
else if(snr_value < 0x4BE95) *snr = 23;
else if(snr_value < 0x4FA7D) *snr = 24;
else if(snr_value < 0x52405) *snr = 25;
else if(snr_value < 0x5570D) *snr = 26;
else if(snr_value < 0x59FEB) *snr = 27;
else if(snr_value < 0x5BF38) *snr = 28;
else *snr = 29;
*maxsnr = 29;
}
exit:
deb_data(" %s Function, SNR = %d -\n",__FUNCTION__, *snr);
return error;
}
int test_read_strength_dbm(struct dvb_frontend *demod, u32 *str)
{
Dword dwError = 0;
Byte str_dbm = 0;
// Read StrengthDBM
dwError = Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, est_rf_level_dbm, &str_dbm);
if(dwError) {
deb_data("%s error, ret=0x%x\n", __FUNCTION__, dwError);
*str = 0;
goto exit;
}
deb_data(" %s Function, StrengthDbm = %d -\n",__FUNCTION__, str_dbm);
exit:
return dwError;
}
int test_read_snr(struct dvb_frontend *demod, u32 *snr_data)
{
Byte check1 = 0x0, check2 = 0x0;
Byte base1 = 0x0, base2 = 0x0;
Byte snr1 = 0x0, snr2 = 0x0, snr3=0x0;
u16 baseAddr = 0x0;
*snr_data = 0x000000;
Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, 0xf21b, &check1);
Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, 0xf999, &check2);
deb_data(" %s Function, check1=0x%x -\n",__FUNCTION__, check1);
if(check1 != 0x0c || check2 != 0x01) return 1;
Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, 0x418b, &base1);
Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, 0x418c, &base2);
baseAddr = (base1<<8) + base2 + 0x2C;
deb_data(" %s Function, base1 = 0x%x -\n",__FUNCTION__, base1);
deb_data(" %s Function, base2 = 0x%x -\n",__FUNCTION__, base2);
deb_data(" %s Function, (base1<<8) + base2 + 0x2c = baseAddr = 0x%x -\n",__FUNCTION__, baseAddr);
Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, baseAddr, &snr1);
Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, baseAddr+1, &snr2);
Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, baseAddr+2, &snr3);
*snr_data = (snr3<<16)+(snr2<<8)+(snr1);
deb_data(" %s Function, snr data = 0x%x -\n",__FUNCTION__, *snr_data);
return 0;
}
/* unused
static int af903x_set_bandwidth(struct dvb_frontend *demod, u8 bw_idx)
{
struct af903xm_state *state = demod->demodulator_priv;
deb_data("- Enter %s Function - bandwidth= %d \n",__FUNCTION__,bw_idx);
// state->current_bandwidth = bw_idx;
DL_Tuner_SetBW(bw_idx);
return 0;
}
*/
static void af903x_set_channel(struct af903x_ofdm_channel *ch)
{
deb_data("- Enter %s Function - RF=%d, BW=%d\n",__FUNCTION__,ch->RF_kHz,ch->Bw);
DL_Tuner_SetFreq(ch->RF_kHz,ch->Bw);
}
static int af903x_tune(struct dvb_frontend *demod, struct af903x_ofdm_channel *ch)
{
if (ch != NULL)
af903x_set_channel(ch);
return 0;
}
static int af903x_init(struct dvb_frontend *demod)
{
int ret = 0;
struct af903xm_state *state = demod->demodulator_priv;
deb_data("- Enter %s Function -\n",__FUNCTION__);
ret = usb_autopm_get_interface(uintfs);
if(ret) {
deb_data("%s calling usb_autopm_get_interface failed with %d\n", __FUNCTION__, ret);
return ret;
}
ret = DL_ApCtrl(1);
if(ret) {
deb_data("af903x_init Fail: 0x%04X", ret);
return -EIO;
}
// reset statistics
state->ber = 0;
state->ucblocks = 0;
state->strength = 0;
state->locked = 1;
// reset values
state->current_frequency = 0;
state->current_bandwidth = 0;
af903x_start_monitor_thread(demod);
deb_data("- Exit %s Function -\n",__FUNCTION__);
return 0;
}
static int af903x_sleep(struct dvb_frontend *demod)
{
int error;
deb_data("Enter %s Function\n",__FUNCTION__);
af903x_stop_monitor_thread(demod);
error = DL_ApCtrl(0);
if (error) {
deb_data("%s calling DL_ApCtrl error : 0x%x\n", __FUNCTION__, error);
return -EIO;
}
usb_autopm_put_interface(uintfs);
deb_data("- Exit %s Function -\n",__FUNCTION__);
return 0;
}
static int af903x_identify(struct af903xm_state *state)
{
return 0;
}
static int af903x_get_frontend(struct dvb_frontend* fe,
struct dvb_frontend_parameters *fep)
{
struct af903xm_state *state = fe->demodulator_priv;
deb_data("- Enter %s Function -\n",__FUNCTION__);
memset(fep, 0, sizeof(*fep));
fep->frequency = state->current_frequency;
fep->inversion = INVERSION_AUTO;
fep->u.ofdm.bandwidth = state->current_bandwidth;
return 0;
}
static int af903x_set_frontend(struct dvb_frontend* fe,
struct dvb_frontend_parameters *fep)
{
struct af903xm_state *state = fe->demodulator_priv;
struct af903x_ofdm_channel ch;
u16 bw=0;
int ret=0;
deb_data("- Enter %s Function -\n",__FUNCTION__);
if( fep->frequency < A333_FREQ_MIN || fep->frequency > A333_FREQ_MAX ) {
deb_data("- %s freq=%d Hz out of range(%d~%d)-\n",__FUNCTION__, fep->frequency,
A333_FREQ_MIN, A333_FREQ_MAX);
// set to zero so we can report unlock to AP, because return -EINVAL apparently
// does not stop AP from continuing tuning.
state->current_frequency = 0;
return -EINVAL;
}
switch(fep->u.ofdm.bandwidth) {
case BANDWIDTH_8_MHZ: bw=8; break;
case BANDWIDTH_7_MHZ: bw=7; break;
case BANDWIDTH_6_MHZ: bw=6; break;
case 6:
//case 7:
//case 8:
bw = fep->u.ofdm.bandwidth;
deb_data("- %s wrong bw value: %d -\n",__FUNCTION__, fep->u.ofdm.bandwidth);
break;
default:
deb_data("- %s unknown bw value: %d -\n",__FUNCTION__, fep->u.ofdm.bandwidth);
return -EINVAL;
}
ch.RF_kHz = fep->frequency / 1000;
ch.Bw = bw;
deb_data("- %s freq=%d KHz, bw=%d MHz -\n",__FUNCTION__, ch.RF_kHz, ch.Bw);
state->current_bandwidth = fep->u.ofdm.bandwidth;
state->current_frequency = fep->frequency;
ret = af903x_tune(fe, &ch);
// start monitor thread if not yet.
af903x_start_monitor_thread(fe);
return ret;
}
static int af903x_read_status(struct dvb_frontend *fe, fe_status_t *stat)
{
//DWORD dwError;
Bool bLock;
struct af903xm_state *state = fe->demodulator_priv;
//u32 snr_data;
//u32 str_dbm_data;
deb_data("- Enter %s Function -\n",__FUNCTION__);
*stat = 0;
#if !USE_MONITOR_TH
{
unsigned long j = (HZ*500)/1000;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(j);
}
dwError = DL_GetLocked(&bLock);
if( dwError ) {
deb_data("- Function %s error=0x%x\n",__FUNCTION__, dwError);
return -EIO;
}
#else
if( alwayslock ) {
bLock = True;
}
else {
bLock = state->locked;
}
#endif
if( bLock ) {
*stat |= FE_HAS_SIGNAL;
*stat |= FE_HAS_CARRIER;
*stat |= FE_HAS_LOCK;
*stat |= FE_HAS_VITERBI;
*stat |= FE_HAS_SYNC;
}
// report unlock if frequency is out of bound
if( 0==state->current_frequency ) {
*stat = 0;
}
#if ENABLE_TEST_FUNCTION
test_read_snr(fe, &snr_data);
test_map_snr(snr_data, &snr);
test_read_strength_dbm(fe, &str_dbm_data);
#endif
deb_data("- Exit %s Function, status=0x%x -\n",__FUNCTION__, *stat);
return 0;
}
static int af903x_read_ubc(struct dvb_frontend *fe, u32* ucblocks)
{
struct af903xm_state *state = fe->demodulator_priv;
//DWORD dwError;
//Bool bLock;
deb_data("- Enter %s Function -\n",__FUNCTION__);
#if !USE_MONITOR_TH
DL_GetChannelStat(NULL, NULL, ucblocks);
dwError = DL_GetLocked(&bLock);
// if signal is not locked, fill with 65535 to indicate loss of signal
if( dwError || !bLock ) {
deb_data("- Function %s lost lock , error=0x%x, bLock=%d -\n",__FUNCTION__, dwError, bLock);
if( ucblocks ) *ucblocks = 65535;
return 0;
}
#else
if( ucblocks ) *ucblocks = state->ucblocks;
#endif
deb_data("- Exit %s Function, ubc=%d -\n",__FUNCTION__, ucblocks? *ucblocks:-1);
return 0;
}
static int af903x_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct af903xm_state *state = fe->demodulator_priv;
//DWORD dwError;
//u32 berbits;
//Bool bLock;
deb_data("- Enter %s Function -\n",__FUNCTION__);
#if !USE_MONITOR_TH
DL_GetChannelStat(ber, &berbits, NULL);
// if signal is not locked, fill BER with BER total bits
dwError = DL_GetLocked(&bLock);
if( dwError || !bLock ) {
deb_data("- Function %s lost lock , error=0x%x, bLock=%d -\n",__FUNCTION__, dwError, bLock);
if( ber ) *ber = berbits;
return 0;
}
#else
if( ber ) *ber = state->ber;
#endif
//
deb_data("- Exit %s Function , ber=%d-\n",__FUNCTION__, ber? *ber:(-1));
return 0;
}
static int af903x_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
DWORD dwError;
Bool bLock;
Byte value;
deb_data("- Enter %s Function -\n",__FUNCTION__);
dwError = Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, signal_strength, &value);
//dwError = DL_GetSignalStrength(strength);
if( dwError ) {
deb_data("- Function %s error reading signal strength -\n",__FUNCTION__);
*strength = 0;
return 1;
}
dwError = DL_GetLocked(&bLock);
if( dwError ) {
deb_data("- Function %s error reading signal quality : lost lock -\n",__FUNCTION__);
*strength = 0;
return 1;
}
deb_data("- Exit %s Function, signal strength (0-100)=%d -\n",__FUNCTION__, value);
// 16 bit output
*strength = value * (0xffff / 100);
return 0;
}
/*
static int af903x_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct af903xm_state *state = fe->demodulator_priv;
//DWORD dwError;
// Bool bLock;
deb_data("- Enter %s Function -\n",__FUNCTION__);
#if !USE_MONITOR_TH
DL_GetSignalStrength(strength);
dwError = DL_GetLocked(&bLock);
if( dwError || !bLock ) {
deb_data("- Function %s lost lock , error=0x%x, bLock=%d -\n",__FUNCTION__, dwError, bLock);
if( strength ) *strength = 0;
return 0;
}
#else
if( strength ) *strength = state->strength;
#endif
deb_data("- Exit %s Function, strength=%d -\n",__FUNCTION__, strength? *strength:-1);
return 0;
}
*/
static int af903x_read_snr(struct dvb_frontend* fe, u16 *snr)
{
Byte value_7_0 = 0;
Byte value_15_8 = 0;
Byte value_23_16 = 0;
//Dword addr = 0;
Dword dwError = 0;
u32 snr_val=0;
u16 snr_max=0;
u32 snr_16bit = 0;
*snr = 0;
deb_data("- Enter %s Function -\n",__FUNCTION__);
dwError = Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, qnt_vbc_err_7_0, &value_7_0);
if(dwError) {
deb_data("- Function %s qnt_vbc_err_7_0 register read fail ! -\n",__FUNCTION__);
return 1;
}
dwError = Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, qnt_vbc_err_15_8, &value_15_8);
if(dwError) {
deb_data("- Function %s qnt_vbc_err_15_8 register read fail ! -\n",__FUNCTION__);
return 1;
}
dwError = Standard_readRegister ((Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST, Processor_OFDM, qnt_vbc_err_23_16, &value_23_16);
if(dwError) {
deb_data("- Function %s qnt_vbc_err_23_16 register read fail ! -\n",__FUNCTION__);
return 1;
}
snr_val = (value_23_16 << 16) + (value_15_8 << 8) + value_7_0;
deb_data("- Function %s SNR row val 0x%x -\n",__FUNCTION__,snr_val);
dwError = test_map_snr(snr_val, snr, &snr_max);
if(dwError) {
deb_data("- Function %s map_snr fail ! -\n",__FUNCTION__);
*snr = 0;
return 1;
}
snr_16bit = (0xffff * *snr) / snr_max;
if (snr_16bit > 0xffff)
snr_16bit = 0xffff;
deb_data("- Exit %s SNR %d dB , %d 16bit -\n",__FUNCTION__,*snr,snr_16bit);
if (dvb_usb_af903x_snrdb == 0)
*snr = snr_16bit;
return 0;
}
static void af903x_release(struct dvb_frontend *demod)
{
struct af903xm_state *st = demod->demodulator_priv;
deb_data("- Enter %s Function -\n",__FUNCTION__);
af903x_stop_monitor_thread(demod);
kfree(st);
}
static struct dvb_frontend_ops af903x_ops = {
.info = {
.name = "A867 USB DVB-T",
.type = FE_OFDM,
.frequency_min = A333_FREQ_MIN,
.frequency_max = A333_FREQ_MAX,
.frequency_stepsize = 62500,
.caps = FE_CAN_INVERSION_AUTO |
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_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_RECOVER |
FE_CAN_HIERARCHY_AUTO,
},
.release = af903x_release,
.init = af903x_init,
.sleep = af903x_sleep,
.set_frontend = af903x_set_frontend,
.get_frontend = af903x_get_frontend,
.read_status = af903x_read_status,
.read_ber = af903x_read_ber,
.read_signal_strength = af903x_read_signal_strength,
.read_snr = af903x_read_snr,
// .read_snr = af903x_read_signal_quality,
.read_ucblocks = af903x_read_ubc,
};
static struct dvb_frontend_ops af903x_ops;
struct dvb_frontend * af903x_attach(u8 tmp)
{
struct dvb_frontend *demod;
struct af903xm_state *st;
deb_data("- Enter %s Function -\n",__FUNCTION__);
st = kzalloc(sizeof(struct af903xm_state), GFP_KERNEL);
if (st == NULL)
return NULL;
demod = &st->demod;
demod->demodulator_priv = st;
memcpy(&st->demod.ops, &af903x_ops, sizeof(struct dvb_frontend_ops));
atomic_set(&st->thread_created, 0);
af903x_identify(st);
return demod;
}
static Dword Monitor_GPIO8(void)
{
Dword error = Error_NO_ERROR;
Byte PinValue;
if ( PDC->idProduct!=0xa333 ) {
goto exit;
}
if( PDC->fc[0].AVerFlags&0x04 ) {
deb_data("%s, skip read GPIO8\n", __FUNCTION__);
PDC->fc[0].AVerFlags &= ~(0x04);
goto exit;
}
// read GPIO8
error = Standard_readRegister ((Demodulator *)&PDC->Demodulator,
PDC->Map.RF_SW_HOST,
Processor_LINK,
PDC->Map.GPIO_STR_i,
&PinValue);
if( error ) goto exit;
if( PDC->Demodulator.GPIO8Value[0] != PinValue ) {
if( PinValue == 1 ) {
error = Standard_writeRegister ( (Demodulator *)&PDC->Demodulator,
PDC->Map.RF_SW_HOST,
Processor_LINK,
PDC->Map.GPIO_UHF_o,
1);
error = Standard_writeRegister ( (Demodulator *)&PDC->Demodulator,
PDC->Map.RF_SW_HOST,
Processor_LINK,
PDC->Map.GPIO_VHF_o,
1);
}
else if (PDC->fc[0].ulDesiredFrequency > 300000)
{
//UHF
error = Standard_writeRegister ( (Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST,
Processor_LINK, PDC->Map.GPIO_UHF_o, 1);
error = Standard_writeRegister ( (Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST,
Processor_LINK, PDC->Map.GPIO_VHF_o, 0);
}
else
{
//VHF
error = Standard_writeRegister ( (Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST,
Processor_LINK, PDC->Map.GPIO_UHF_o, 0);
error = Standard_writeRegister ( (Demodulator *)&PDC->Demodulator, PDC->Map.RF_SW_HOST,
Processor_LINK, PDC->Map.GPIO_VHF_o, 1);
}
PDC->Demodulator.GPIO8Value[0] = PinValue;
}
else if( PinValue == 0 ) { // pin value remains 0
if( PDC->Demodulator.channelStatistic[0].abortCount > 2500 &&
(PDC->fc[0].AVerFlags&0x08)==0 ) {
// pull high GPIO8
PDC->fc[0].AVerFlags |= 0x08; // pull H flag bit 3
Demodulator_writeRegister( (Demodulator *)&PDC->Demodulator, 0, Processor_LINK, PDC->Map.GPIO_STR_en, 1);
Demodulator_writeRegister( (Demodulator *)&PDC->Demodulator, 0, Processor_LINK, PDC->Map.GPIO_STR_on, 1);
Demodulator_writeRegister( (Demodulator *)&PDC->Demodulator, 0, Processor_LINK, PDC->Map.GPIO_STR_o, 1);
}
}
else if( PinValue == 1 ) { // pin value remains 1
if( PDC->Demodulator.channelStatistic[0].abortCount < 2500 &&
(PDC->fc[0].AVerFlags&0x08)!=0 ) {
// after manual tune and result is good
PDC->fc[0].AVerFlags &= ~(0x08);
}
}
exit:
return error;
}
static int af903x_monitor_thread_func(void *data)
{
struct dvb_frontend *demod = data;
struct af903xm_state *state = demod? demod->demodulator_priv:NULL;
const char *thread_name = "A867_monitor_thread";
unsigned long loopcount = 0;
Bool bLock = True;
deb_data("- Enter %s Function -\n",__FUNCTION__);
if( !state ) return -1;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
lock_kernel();
#else
mutex_lock(&mutex);
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,61)
daemonize();
sigfillset(¤t->blocked);
sprintf(current->comm, "%s", thread_name);
#else
daemonize("%s", thread_name);
allow_signal(SIGTERM);
#endif
siginitsetinv(¤t->blocked, sigmask(SIGKILL)|sigmask(SIGINT)|\
sigmask(SIGTERM));
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
unlock_kernel();
#else
mutex_unlock(&mutex);
#endif
while(!state->thread_should_stop && !signal_pending(current)) {
//DWORD dwError;
u32 ber, berbits, ucblocks;
u16 strength;
loopcount++;
// sleep for 500 mili seconds
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((HZ*500)/1000);
// monitor lock and return lock status
// reacquire channel if lock is lost for quiet a while
#if 1
DL_MonitorReception(&bLock);
state->locked = bLock? 1:0;
#endif //0
// obtain statistics
// do this every 2 loops, which is 1 second
if( loopcount%2 == 1 ) {
// do not do this if bLock is false, because
// 1. this is not necessary
// 2. frequency is not yet set
if( bLock ) {
DL_GetChannelStat(&ber, &berbits, &ucblocks);
DL_GetSignalStrength(&strength);
// sometimes strength can drop to zero while demod
// is still pumping out stream. In which case we
// maintain strength to a locked level because
// some AP(kaffeine) seem to rely on strength
// for signs of signal lock.
//if( strength==0 ) strength = 10;
strength = (strength*65535/100);
}
else {
DL_GetChannelStat(NULL, &berbits, NULL);
ber = berbits;
ucblocks = 65535;
strength = 0;
}
state->ber = ber;
state->ucblocks = ucblocks;
state->strength = strength;
}
// monitor GPIO8
Monitor_GPIO8();
}
//Firstly, clear thread_created flag so monitor thead can be restored later.
atomic_set(&state->thread_created, 0);
//Secondly, clear current frequency so we can depent on later set_frequency to restore
//this thread.
state->current_frequency = 0;
deb_data("- Exit %s Function -\n",__FUNCTION__);
complete_and_exit(&state->thread_exit, 0);
}
void af903x_start_monitor_thread(struct dvb_frontend *demod)
{
struct af903xm_state *st = demod? demod->demodulator_priv:NULL;
if( !st ) return;
#if USE_MONITOR_TH
// if st->thread_created is already 1, then skip thread creation
if( atomic_add_unless(&st->thread_created, 1, 1) ) {
st->thread_should_stop = 0;
init_completion(&st->thread_exit);
kernel_thread(af903x_monitor_thread_func, st, 0);
}
#endif //USE_MONITOR_TH
}
void af903x_stop_monitor_thread(struct dvb_frontend *demod)
{
struct af903xm_state *st = demod? demod->demodulator_priv:NULL;
deb_data("- Enter %s Function -\n",__FUNCTION__);
if( !st ) return;
#if USE_MONITOR_TH
// if st->thread_created is alread 0, then skip thread destruction
if( atomic_add_unless(&st->thread_created, -1, 0) ) {
st->thread_should_stop = 1;
wait_for_completion(&st->thread_exit);
}
#endif //USE_MONITOR_TH
deb_data("- Exit %s Function -\n",__FUNCTION__);
}