/* Read registers to compute resulting frequency */
rc = zl3073x_read_u16(zldev, ZL_REG_REF_FREQ_BASE, &base); if (rc) return rc;
rc = zl3073x_read_u16(zldev, ZL_REG_REF_FREQ_MULT, &mult); if (rc) return rc;
rc = zl3073x_read_u16(zldev, ZL_REG_REF_RATIO_M, &num); if (rc) return rc;
rc = zl3073x_read_u16(zldev, ZL_REG_REF_RATIO_N, &denom); if (rc) return rc;
/* Sanity check that HW has not returned zero denominator */ if (!denom) {
dev_err(zldev->dev, "Zero divisor for ref %u frequency got from device\n",
ref_id); return -EINVAL;
}
/* Compute the frequency */
*frequency = mul_u64_u32_div(base * mult, num, denom);
/* If the pin supports esync control expose its range but only *ifthecurrentreferencefrequencyis>1Hz.
*/ if (pin->esync_control && ref_freq > 1) {
esync->range = esync_freq_ranges;
esync->range_num = ARRAY_SIZE(esync_freq_ranges);
} else {
esync->range = NULL;
esync->range_num = 0;
}
/* Update ref sync control register */
rc = zl3073x_write_u8(zldev, ZL_REG_REF_SYNC_CTRL, ref_sync_ctrl); if (rc) return rc;
if (freq) { /* 1 Hz is only supported frequnecy currently */
rc = zl3073x_write_u32(zldev, ZL_REG_REF_ESYNC_DIV,
ZL_REF_ESYNC_DIV_1HZ); if (rc) return rc;
}
switch (zldpll->refsel_mode) { case ZL_DPLL_MODE_REFSEL_MODE_AUTO: /* For automatic mode read refsel_status register */
rc = zl3073x_read_u8(zldev,
ZL_REG_DPLL_REFSEL_STATUS(zldpll->id),
&value); if (rc) return rc;
/* Extract reference state */
state = FIELD_GET(ZL_DPLL_REFSEL_STATUS_STATE, value);
/* Return the reference only if the DPLL is locked to it */ if (state == ZL_DPLL_REFSEL_STATUS_STATE_LOCK)
*ref = FIELD_GET(ZL_DPLL_REFSEL_STATUS_REFSEL, value); else
*ref = ZL3073X_DPLL_REF_NONE; break; case ZL_DPLL_MODE_REFSEL_MODE_REFLOCK: /* For manual mode return stored value */
*ref = zldpll->forced_ref; break; default: /* For other modes like NCO, freerun... there is no input ref */
*ref = ZL3073X_DPLL_REF_NONE; break;
}
switch (mode) { case ZL_DPLL_MODE_REFSEL_MODE_REFLOCK: /* Manual mode with ref selected */ if (ref == ZL3073X_DPLL_REF_NONE) { switch (zldpll->lock_status) { case DPLL_LOCK_STATUS_LOCKED_HO_ACQ: case DPLL_LOCK_STATUS_HOLDOVER: /* Switch to forced holdover */
mode = ZL_DPLL_MODE_REFSEL_MODE_HOLDOVER; break; default: /* Switch to freerun */
mode = ZL_DPLL_MODE_REFSEL_MODE_FREERUN; break;
} /* Keep selected reference */
ref = zldpll->forced_ref;
} elseif (ref == zldpll->forced_ref) { /* No register update - same mode and same ref */ return0;
} break; case ZL_DPLL_MODE_REFSEL_MODE_FREERUN: case ZL_DPLL_MODE_REFSEL_MODE_HOLDOVER: /* Manual mode without no ref */ if (ref == ZL3073X_DPLL_REF_NONE) /* No register update - keep current mode */ return0;
/* Switch to reflock mode and update ref selection */
mode = ZL_DPLL_MODE_REFSEL_MODE_REFLOCK; break; default: /* For other modes like automatic or NCO ref cannot be selected *manually
*/ return -EOPNOTSUPP;
}
/* Get currently connected reference */
rc = zl3073x_dpll_connected_ref_get(zldpll, &conn_ref); if (rc) return rc;
/* Report phase offset only for currently connected pin if the phase *monitorfeatureisdisabled.
*/
ref = zl3073x_input_pin_ref_get(pin->id); if (!zldpll->phase_monitor && ref != conn_ref) {
*phase_offset = 0;
return0;
}
/* Get this pin monitor status */
rc = zl3073x_read_u8(zldev, ZL_REG_REF_MON_STATUS(ref), &ref_status); if (rc) return rc;
/* Report phase offset only if the input pin signal is present */ if (ref_status != ZL_REF_MON_STATUS_OK) {
*phase_offset = 0;
return0;
}
ref_phase = pin->phase_offset;
/* The DPLL being locked to a higher freq than the current ref *thephaseoffsetismoddedtotheperiodofthesignal *thedpllislockedto.
*/ if (ZL3073X_DPLL_REF_IS_VALID(conn_ref) && conn_ref != ref) {
u32 conn_freq, ref_freq;
/* Get frequency of connected ref */
rc = zl3073x_dpll_input_ref_frequency_get(zldpll, conn_ref,
&conn_freq); if (rc) return rc;
/* Get frequency of given ref */
rc = zl3073x_dpll_input_ref_frequency_get(zldpll, ref,
&ref_freq); if (rc) return rc;
if (conn_freq > ref_freq) {
s64 conn_period, div_factor;
/* Write the requested value into the compensation register */
rc = zl3073x_write_u48(zldev, ZL_REG_REF_PHASE_OFFSET_COMP, phase_comp); if (rc) return rc;
/* Get currently connected reference */
rc = zl3073x_dpll_connected_ref_get(zldpll, &ref_conn); if (rc) return rc;
if (ref == ref_conn) {
*state = DPLL_PIN_STATE_CONNECTED; return0;
}
/* If the DPLL is running in automatic mode and the reference is *selectableanditsmonitordoesnotreportanyerrorthenreport *pinasselectable.
*/ if (zldpll->refsel_mode == ZL_DPLL_MODE_REFSEL_MODE_AUTO &&
pin->selectable) { /* Read reference monitor status */
rc = zl3073x_read_u8(zldev, ZL_REG_REF_MON_STATUS(ref),
&status); if (rc) return rc;
/* If the monitor indicates errors report the reference *asdisconnected
*/ if (status == ZL_REF_MON_STATUS_OK) {
*state = DPLL_PIN_STATE_SELECTABLE; return0;
}
}
/* Otherwise report the pin as disconnected */
*state = DPLL_PIN_STATE_DISCONNECTED;
case ZL_DPLL_MODE_REFSEL_MODE_AUTO: if (state == DPLL_PIN_STATE_SELECTABLE) { if (pin->selectable) return0; /* Pin is already selectable */
/* Restore pin priority in HW */
rc = zl3073x_dpll_ref_prio_set(pin, pin->prio); if (rc) return rc;
/* Mark pin as selectable */
pin->selectable = true;
} elseif (state == DPLL_PIN_STATE_DISCONNECTED) { if (!pin->selectable) return0; /* Pin is already disconnected */
/* Set pin priority to none in HW */
rc = zl3073x_dpll_ref_prio_set(pin,
ZL_DPLL_REF_PRIO_NONE); if (rc) return rc;
/* Mark pin as non-selectable */
pin->selectable = false;
} else {
NL_SET_ERR_MSG(extack, "Invalid pin state for automatic mode"); return -EINVAL;
} break;
default: /* In other modes we cannot change input reference */
NL_SET_ERR_MSG(extack, "Pin state cannot be changed in current mode");
rc = -EOPNOTSUPP; break;
}
/* If N-division is enabled, esync is not supported. The register used *forN-divisionisalsousedfortheesyncdividersobothcannot *beused.
*/ switch (zl3073x_out_signal_format_get(zldev, out)) { case ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV: case ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV_INV: return -EOPNOTSUPP; default: break;
}
guard(mutex)(&zldev->multiop_lock);
/* Read output configuration into mailbox */
rc = zl3073x_mb_op(zldev, ZL_REG_OUTPUT_MB_SEM, ZL_OUTPUT_MB_SEM_RD,
ZL_REG_OUTPUT_MB_MASK, BIT(out)); if (rc) return rc;
/* Check output divisor for zero */ if (!output_div) {
dev_err(dev, "Zero divisor for OUTPUT%u got from device\n",
out); return -EINVAL;
}
/* Get synth attached to output pin */
synth = zl3073x_out_synth_get(zldev, out);
/* Get synth frequency */
synth_freq = zl3073x_synth_freq_get(zldev, synth);
clock_type = FIELD_GET(ZL_OUTPUT_MODE_CLOCK_TYPE, output_mode); if (clock_type != ZL_OUTPUT_MODE_CLOCK_TYPE_ESYNC) { /* No need to read esync data if it is not enabled */
esync->freq = 0;
esync->pulse = 0;
goto finish;
}
/* Read esync period */
rc = zl3073x_read_u32(zldev, ZL_REG_OUTPUT_ESYNC_PERIOD, &esync_period); if (rc) return rc;
/* Check esync divisor for zero */ if (!esync_period) {
dev_err(dev, "Zero esync divisor for OUTPUT%u got from device\n",
out); return -EINVAL;
}
/* Get esync pulse width in units of half synth cycles */
rc = zl3073x_read_u32(zldev, ZL_REG_OUTPUT_ESYNC_WIDTH, &esync_width); if (rc) return rc;
/* By comparing the esync_pulse_width to the half of the pulse width *theesyncpulsepercentagecanbedetermined. *Notethathalfpulsewidthisinunitsofhalfsynthcycles,which *iswhyitreducesdowntobeoutput_div.
*/
esync->pulse = (50 * esync_width) / output_div;
finish: /* Set supported esync ranges if the pin supports esync control and *iftheoutputfrequencyis>1Hz.
*/ if (pin->esync_control && (synth_freq / output_div) > 1) {
esync->range = esync_freq_ranges;
esync->range_num = ARRAY_SIZE(esync_freq_ranges);
} else {
esync->range = NULL;
esync->range_num = 0;
}
/* If N-division is enabled, esync is not supported. The register used *forN-divisionisalsousedfortheesyncdividersobothcannot *beused.
*/ switch (zl3073x_out_signal_format_get(zldev, out)) { case ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV: case ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV_INV: return -EOPNOTSUPP; default: break;
}
guard(mutex)(&zldev->multiop_lock);
/* Read output configuration into mailbox */
rc = zl3073x_mb_op(zldev, ZL_REG_OUTPUT_MB_SEM, ZL_OUTPUT_MB_SEM_RD,
ZL_REG_OUTPUT_MB_MASK, BIT(out)); if (rc) return rc;
/* Select clock type */ if (freq)
clock_type = ZL_OUTPUT_MODE_CLOCK_TYPE_ESYNC; else
clock_type = ZL_OUTPUT_MODE_CLOCK_TYPE_NORMAL;
/* Update clock type in output mode */
output_mode &= ~ZL_OUTPUT_MODE_CLOCK_TYPE;
output_mode |= FIELD_PREP(ZL_OUTPUT_MODE_CLOCK_TYPE, clock_type);
rc = zl3073x_write_u8(zldev, ZL_REG_OUTPUT_MODE, output_mode); if (rc) return rc;
/* If esync is being disabled just write mailbox and finish */ if (!freq) goto write_mailbox;
/* Get synth attached to output pin */
synth = zl3073x_out_synth_get(zldev, out);
/* Get synth frequency */
synth_freq = zl3073x_synth_freq_get(zldev, synth);
rc = zl3073x_read_u32(zldev, ZL_REG_OUTPUT_DIV, &output_div); if (rc) return rc;
/* Check output divisor for zero */ if (!output_div) {
dev_err(zldev->dev, "Zero divisor for OUTPUT%u got from device\n", out); return -EINVAL;
}
/* Compute and update esync period */
esync_period = synth_freq / (u32)freq / output_div;
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_ESYNC_PERIOD, esync_period); if (rc) return rc;
/* Half of the period in units of 1/2 synth cycle can be represented by *theoutput_div.Togetthesupportedesyncpulsewidthof25%ofthe *periodtheoutput_divcanjustbedividedby2.Notethatthis *assumesthatoutput_diviseven,otherwisesomeresolutionwillbe *lost.
*/
esync_width = output_div / 2;
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_ESYNC_WIDTH, esync_width); if (rc) return rc;
/* Read output configuration into mailbox */
rc = zl3073x_mb_op(zldev, ZL_REG_OUTPUT_MB_SEM, ZL_OUTPUT_MB_SEM_RD,
ZL_REG_OUTPUT_MB_MASK, BIT(out)); if (rc) return rc;
rc = zl3073x_read_u32(zldev, ZL_REG_OUTPUT_DIV, &output_div); if (rc) return rc;
/* Check output divisor for zero */ if (!output_div) {
dev_err(dev, "Zero divisor for output %u got from device\n",
out); return -EINVAL;
}
/* Read used signal format for the given output */
signal_format = zl3073x_out_signal_format_get(zldev, out);
switch (signal_format) { case ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV: case ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV_INV: /* In case of divided format we have to distiguish between *givenoutputpintype.
*/ if (zl3073x_dpll_is_p_pin(pin)) { /* For P-pin the resulting frequency is computed as *simpledivisionofsynthfrequencyandoutput *divisor.
*/
*frequency = synth_freq / output_div;
} else { /* For N-pin we have to divide additionally by *divisorstoredinesync_periodoutputmailbox *registerthatisusedasN-pindivisorforthese *modes.
*/
u32 ndiv;
rc = zl3073x_read_u32(zldev, ZL_REG_OUTPUT_ESYNC_PERIOD,
&ndiv); if (rc) return rc;
/* Check N-pin divisor for zero */ if (!ndiv) {
dev_err(dev, "Zero N-pin divisor for output %u got from device\n",
out); return -EINVAL;
}
/* Compute final divisor for N-pin */
*frequency = synth_freq / output_div / ndiv;
} break; default: /* In other modes the resulting frequency is computed as *divisionofsynthfrequencyandoutputdivisor.
*/
*frequency = synth_freq / output_div; break;
}
/* Check signal format */ if (signal_format != ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV &&
signal_format != ZL_OUTPUT_MODE_SIGNAL_FORMAT_2_NDIV_INV) { /* For non N-divided signal formats the frequency is computed *asdivisionofsynthfrequencyandoutputdivisor.
*/
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_DIV, new_div); if (rc) return rc;
/* For 50/50 duty cycle the divisor is equal to width */
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_WIDTH, new_div); if (rc) return rc;
/* For N-divided signal format get current divisor */
rc = zl3073x_read_u32(zldev, ZL_REG_OUTPUT_DIV, &cur_div); if (rc) return rc;
/* Check output divisor for zero */ if (!cur_div) {
dev_err(dev, "Zero divisor for output %u got from device\n",
out); return -EINVAL;
}
/* Get N-pin divisor (shares the same register with esync */
rc = zl3073x_read_u32(zldev, ZL_REG_OUTPUT_ESYNC_PERIOD, &ndiv); if (rc) return rc;
/* Check N-pin divisor for zero */ if (!ndiv) {
dev_err(dev, "Zero N-pin divisor for output %u got from device\n",
out); return -EINVAL;
}
/* Compute current output frequency for P-pin */
output_p_freq = synth_freq / cur_div;
/* Compute current N-pin frequency */
output_n_freq = output_p_freq / ndiv;
if (zl3073x_dpll_is_p_pin(pin)) { /* We are going to change output frequency for P-pin but *iftherequestedfrequencyislessthancurrentN-pin *frequencythenindicateafailureaswearenotable *tocomputeN-pindivisortokeepitsfrequencyunchanged.
*/ if (frequency <= output_n_freq) return -EINVAL;
/* Update the output divisor */
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_DIV, new_div); if (rc) return rc;
/* For 50/50 duty cycle the divisor is equal to width */
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_WIDTH, new_div); if (rc) return rc;
/* Compute new divisor for N-pin */
ndiv = (u32)frequency / output_n_freq;
} else { /* We are going to change frequency of N-pin but if *therequestedfreqisgreaterorequalthanfreqofP-pin *intheoutputpairwecannotcomputedivisorfortheN-pin. *Inthiscaseindicateafailure.
*/ if (output_p_freq <= frequency) return -EINVAL;
/* Compute new divisor for N-pin */
ndiv = output_p_freq / (u32)frequency;
}
/* Update divisor for the N-pin */
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_ESYNC_PERIOD, ndiv); if (rc) return rc;
/* For 50/50 duty cycle the divisor is equal to width */
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_ESYNC_WIDTH, ndiv); if (rc) return rc;
/* Get attached synth */
out = zl3073x_output_pin_out_get(pin->id);
synth = zl3073x_out_synth_get(zldev, out);
/* Get synth's frequency */
synth_freq = zl3073x_synth_freq_get(zldev, synth);
/* Value in register is expressed in half synth clock cycles so *thegivenphaseadjustmentamultipleofhalfsynthclock.
*/
half_synth_cycle = (int)div_u64(PSEC_PER_SEC, 2 * synth_freq);
if ((phase_adjust % half_synth_cycle) != 0) {
NL_SET_ERR_MSG_FMT(extack, "Phase adjustment value has to be multiple of %d",
half_synth_cycle); return -EINVAL;
}
phase_adjust /= half_synth_cycle;
/* The value in the register is stored as two's complement negation *ofrequestedvalue.
*/
phase_adjust = -phase_adjust;
/* Write the requested value into the compensation register */
rc = zl3073x_write_u32(zldev, ZL_REG_OUTPUT_PHASE_COMP, phase_adjust); if (rc) return rc;
switch (zldpll->refsel_mode) { case ZL_DPLL_MODE_REFSEL_MODE_FREERUN: case ZL_DPLL_MODE_REFSEL_MODE_NCO: /* In FREERUN and NCO modes the DPLL is always unlocked */
*status = DPLL_LOCK_STATUS_UNLOCKED;
return0; default: break;
}
/* Read DPLL monitor status */
rc = zl3073x_read_u8(zldev, ZL_REG_DPLL_MON_STATUS(zldpll->id),
&mon_status); if (rc) return rc;
state = FIELD_GET(ZL_DPLL_MON_STATUS_STATE, mon_status);
switch (state) { case ZL_DPLL_MON_STATUS_STATE_LOCK: if (FIELD_GET(ZL_DPLL_MON_STATUS_HO_READY, mon_status))
*status = DPLL_LOCK_STATUS_LOCKED_HO_ACQ; else
*status = DPLL_LOCK_STATUS_LOCKED; break; case ZL_DPLL_MON_STATUS_STATE_HOLDOVER: case ZL_DPLL_MON_STATUS_STATE_ACQUIRING:
*status = DPLL_LOCK_STATUS_HOLDOVER; break; default:
dev_warn(zldev->dev, "Unknown DPLL monitor status: 0x%02x\n",
mon_status);
*status = DPLL_LOCK_STATUS_UNLOCKED; break;
}
switch (zldpll->refsel_mode) { case ZL_DPLL_MODE_REFSEL_MODE_FREERUN: case ZL_DPLL_MODE_REFSEL_MODE_HOLDOVER: case ZL_DPLL_MODE_REFSEL_MODE_NCO: case ZL_DPLL_MODE_REFSEL_MODE_REFLOCK: /* Use MANUAL for device FREERUN, HOLDOVER, NCO and *REFLOCKmodes
*/
*mode = DPLL_MODE_MANUAL; break; case ZL_DPLL_MODE_REFSEL_MODE_AUTO: /* Use AUTO for device AUTO mode */
*mode = DPLL_MODE_AUTOMATIC; break; default: return -EINVAL;
}
/* Skip the pin if it is connected to different DPLL channel */ if (zl3073x_out_dpll_get(zldev, out) != zldpll->id) {
dev_dbg(zldev->dev, "%s%u is driven by different DPLL\n", name,
out);
/* Skip N-pin if the corresponding input/output is differential */ if (is_diff && zl3073x_is_n_pin(index)) {
dev_dbg(zldev->dev, "%s%u is differential, skipping N-pin\n",
name, index / 2);
returnfalse;
}
/* Skip the pin if it is disabled */ if (!is_enabled) {
dev_dbg(zldev->dev, "%s%u%c is disabled\n", name, index / 2,
zl3073x_is_p_pin(index) ? 'P' : 'N');
/* Process input pins */ for (index = 0; index < ZL3073X_NUM_PINS; index++) { /* First input pins and then output pins */ if (index < ZL3073X_NUM_INPUT_PINS) {
id = index;
dir = DPLL_PIN_DIRECTION_INPUT;
} else {
id = index - ZL3073X_NUM_INPUT_PINS;
dir = DPLL_PIN_DIRECTION_OUTPUT;
}
/* Check if the pin registrable to this DPLL */ if (!zl3073x_dpll_pin_is_registrable(zldpll, dir, id)) continue;
/* Get current lock status for the DPLL */
rc = zl3073x_dpll_lock_status_get(zldpll->dpll_dev, zldpll,
&lock_status, NULL, NULL); if (rc) {
dev_err(dev, "Failed to get DPLL%u lock status: %pe\n",
zldpll->id, ERR_PTR(rc)); return;
}
/* If lock status was changed then notify DPLL core */ if (zldpll->lock_status != lock_status) {
zldpll->lock_status = lock_status;
dpll_device_change_ntf(zldpll->dpll_dev);
}
/* Input pin monitoring does make sense only in automatic *orforcedreferencemodes.
*/ if (zldpll->refsel_mode != ZL_DPLL_MODE_REFSEL_MODE_AUTO &&
zldpll->refsel_mode != ZL_DPLL_MODE_REFSEL_MODE_REFLOCK) return;
/* Update phase offset latch registers for this DPLL if the phase *offsetmonitorfeatureisenabled.
*/ if (zldpll->phase_monitor) {
rc = zl3073x_ref_phase_offsets_update(zldev, zldpll->id); if (rc) {
dev_err(zldev->dev, "Failed to update phase offsets: %pe\n",
ERR_PTR(rc)); return;
}
}
/* Output pins change checks are not necessary because output *statesareconstant.
*/ if (!zl3073x_dpll_is_input_pin(pin)) continue;
rc = zl3073x_dpll_ref_state_get(pin, &state); if (rc) {
dev_err(dev, "Failed to get %s on DPLL%u state: %pe\n",
pin->label, zldpll->id, ERR_PTR(rc)); return;
}
if (state != pin->pin_state) {
dev_dbg(dev, "%s state changed: %u->%u\n", pin->label,
pin->pin_state, state);
pin->pin_state = state;
pin_changed = true;
}
/* Check for phase offset and ffo change once per second */ if (zldpll->check_count % 2 == 0) { if (zl3073x_dpll_pin_phase_offset_check(pin))
pin_changed = true;
if (zl3073x_dpll_pin_ffo_check(pin))
pin_changed = true;
}
if (pin_changed)
dpll_pin_change_ntf(pin->dpll_pin);
}
}
/** *zl3073x_dpll_init_fine_phase_adjust-doinitialfinephaseadjustments *@zldev:pointertozl3073xdevice * *Performsinitialfinephaseadjustmentsneededperdatasheet. * *Return:0onsuccess,<0onerror
*/ int
zl3073x_dpll_init_fine_phase_adjust(struct zl3073x_dev *zldev)
{ int rc;
rc = zl3073x_write_u8(zldev, ZL_REG_SYNTH_PHASE_SHIFT_MASK, 0x1f); if (rc) return rc;
rc = zl3073x_write_u8(zldev, ZL_REG_SYNTH_PHASE_SHIFT_INTVL, 0x01); if (rc) return rc;
rc = zl3073x_write_u16(zldev, ZL_REG_SYNTH_PHASE_SHIFT_DATA, 0xffff); if (rc) return rc;
rc = zl3073x_write_u8(zldev, ZL_REG_SYNTH_PHASE_SHIFT_CTRL, 0x01); if (rc) return rc;
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.