summaryrefslogtreecommitdiff
path: root/drivers/media/dvb-frontends/drx39xyj/drxj.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb-frontends/drx39xyj/drxj.c')
-rw-r--r--drivers/media/dvb-frontends/drx39xyj/drxj.c89
1 files changed, 50 insertions, 39 deletions
diff --git a/drivers/media/dvb-frontends/drx39xyj/drxj.c b/drivers/media/dvb-frontends/drx39xyj/drxj.c
index 6005e344f66c..9958277dd943 100644
--- a/drivers/media/dvb-frontends/drx39xyj/drxj.c
+++ b/drivers/media/dvb-frontends/drx39xyj/drxj.c
@@ -6199,7 +6199,8 @@ rw_error:
* \brief Get the values of packet error in 8VSB mode
* \return Error code
*/
-static int get_vsb_post_rs_pck_err(struct i2c_device_addr *dev_addr, u16 *pck_errs)
+static int get_vsb_post_rs_pck_err(struct i2c_device_addr *dev_addr,
+ u16 *pck_errs, u16 *pck_count)
{
int rc;
u16 data = 0;
@@ -6224,9 +6225,8 @@ static int get_vsb_post_rs_pck_err(struct i2c_device_addr *dev_addr, u16 *pck_er
pr_err("error: period and/or prescale is zero!\n");
return -EIO;
}
- *pck_errs =
- (u16) frac_times1e6(packet_errors_mant * (1 << packet_errors_exp),
- (period * prescale * 77));
+ *pck_errs = packet_errors_mant * (1 << packet_errors_exp);
+ *pck_count = period * prescale * 77;
return 0;
rw_error:
@@ -6238,7 +6238,8 @@ rw_error:
* \brief Get the values of ber in VSB mode
* \return Error code
*/
-static int get_vs_bpost_viterbi_ber(struct i2c_device_addr *dev_addr, u32 *ber)
+static int get_vs_bpost_viterbi_ber(struct i2c_device_addr *dev_addr,
+ u32 *ber, u32 *cnt)
{
int rc;
u16 data = 0;
@@ -6259,19 +6260,17 @@ static int get_vs_bpost_viterbi_ber(struct i2c_device_addr *dev_addr, u32 *ber)
bit_errors_exp = (data & FEC_RS_NR_BIT_ERRORS_EXP__M)
>> FEC_RS_NR_BIT_ERRORS_EXP__B;
+ *cnt = period * prescale * 207 * ((bit_errors_exp > 2) ? 1 : 8);
+
if (((bit_errors_mant << bit_errors_exp) >> 3) > 68700)
- *ber = 26570;
+ *ber = (*cnt) * 26570;
else {
if (period * prescale == 0) {
pr_err("error: period and/or prescale is zero!\n");
return -EIO;
}
- *ber =
- frac_times1e6(bit_errors_mant <<
- ((bit_errors_exp >
- 2) ? (bit_errors_exp - 3) : bit_errors_exp),
- period * prescale * 207 *
- ((bit_errors_exp > 2) ? 1 : 8));
+ *ber = bit_errors_mant << ((bit_errors_exp > 2) ?
+ (bit_errors_exp - 3) : bit_errors_exp);
}
return 0;
@@ -6284,7 +6283,8 @@ rw_error:
* \brief Get the values of ber in VSB mode
* \return Error code
*/
-static int get_vs_bpre_viterbi_ber(struct i2c_device_addr *dev_addr, u32 *ber)
+static int get_vs_bpre_viterbi_ber(struct i2c_device_addr *dev_addr,
+ u32 *ber, u32 *cnt)
{
u16 data = 0;
int rc;
@@ -6292,15 +6292,12 @@ static int get_vs_bpre_viterbi_ber(struct i2c_device_addr *dev_addr, u32 *ber)
rc = drxj_dap_read_reg16(dev_addr, VSB_TOP_NR_SYM_ERRS__A, &data, 0);
if (rc != 0) {
pr_err("error %d\n", rc);
- goto rw_error;
+ return -EIO;
}
- *ber =
- frac_times1e6(data,
- VSB_TOP_MEASUREMENT_PERIOD * SYMBOLS_PER_SEGMENT);
+ *ber = data;
+ *cnt = VSB_TOP_MEASUREMENT_PERIOD * SYMBOLS_PER_SEGMENT;
return 0;
-rw_error:
- return -EIO;
}
/**
@@ -9289,7 +9286,8 @@ rw_error:
*
*/
static int
-get_qamrs_err_count(struct i2c_device_addr *dev_addr, struct drxjrs_errors *rs_errors)
+get_qamrs_err_count(struct i2c_device_addr *dev_addr,
+ struct drxjrs_errors *rs_errors)
{
int rc;
u16 nr_bit_errors = 0,
@@ -9474,6 +9472,8 @@ ctrl_get_qam_sig_quality(struct drx_demod_instance *demod)
u16 qam_vd_period = 0; /* Viterbi Measurement period */
u32 vd_bit_cnt = 0; /* ViterbiDecoder Bit Count */
+ p->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+
/* read the physical registers */
/* Get the RS error data */
rc = get_qamrs_err_count(dev_addr, &measuredrs_errors);
@@ -9554,9 +9554,9 @@ ctrl_get_qam_sig_quality(struct drx_demod_instance *demod)
QAM_VD_NR_SYMBOL_ERRORS_FIXED_MANT__B;
if ((m << e) >> 3 > 549752)
- qam_vd_ser = 500000;
+ qam_vd_ser = 500000 * vd_bit_cnt * ((e > 2) ? 1 : 8) / 8;
else
- qam_vd_ser = frac_times1e6(m << ((e > 2) ? (e - 3) : e), vd_bit_cnt * ((e > 2) ? 1 : 8) / 8);
+ qam_vd_ser = m << ((e > 2) ? (e - 3) : e);
/* --------------------------------------- */
/* pre and post RedSolomon BER Calculation */
@@ -9578,9 +9578,9 @@ ctrl_get_qam_sig_quality(struct drx_demod_instance *demod)
/*qam_pre_rs_ber = frac_times1e6( ber_cnt, rs_bit_cnt ); */
if (m > (rs_bit_cnt >> (e + 1)) || (rs_bit_cnt >> e) == 0)
- qam_pre_rs_ber = 500000;
+ qam_pre_rs_ber = 500000 * rs_bit_cnt >> e;
else
- qam_pre_rs_ber = frac_times1e6(m, rs_bit_cnt >> e);
+ qam_pre_rs_ber = m;
/* post RS BER = 1000000* (11.17 * FEC_OC_SNC_FAIL_COUNT__A) / */
/* (1504.0 * FEC_OC_SNC_FAIL_PERIOD__A) */
@@ -9609,16 +9609,16 @@ ctrl_get_qam_sig_quality(struct drx_demod_instance *demod)
p->cnr.stat[0].scale = FE_SCALE_DECIBEL;
p->cnr.stat[0].svalue = ((u16) qam_sl_mer) * 100;
- if (ext_attr->standard == DRX_STANDARD_ITU_B)
+ if (ext_attr->standard == DRX_STANDARD_ITU_B) {
p->pre_bit_error.stat[0].uvalue += qam_vd_ser;
- else
+ p->pre_bit_count.stat[0].uvalue += vd_bit_cnt * ((e > 2) ? 1 : 8) / 8;
+ } else {
p->pre_bit_error.stat[0].uvalue += qam_pre_rs_ber;
+ p->pre_bit_count.stat[0].uvalue += rs_bit_cnt >> e;
+ }
p->post_bit_error.stat[0].uvalue = qam_post_rs_ber;
- p->pre_bit_count.stat[0].uvalue += 1000000;
- p->post_bit_count.stat[0].uvalue += 1000000;
-
p->block_error.stat[0].uvalue += pkt_errs;
#ifdef DRXJ_SIGNAL_ACCUM_ERR
@@ -10661,8 +10661,8 @@ ctrl_sig_quality(struct drx_demod_instance *demod,
struct dtv_frontend_properties *p = &state->frontend.dtv_property_cache;
enum drx_standard standard = ext_attr->standard;
int rc;
- u32 ber;
- u16 pkt, mer, strength;
+ u32 ber, cnt;
+ u16 err, pkt, mer, strength;
rc = get_sig_strength(demod, &strength);
if (rc < 0) {
@@ -10684,23 +10684,26 @@ ctrl_sig_quality(struct drx_demod_instance *demod,
#endif
if (lock_status != DRXJ_DEMOD_LOCK && lock_status != DRX_LOCKED) {
p->pre_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
- p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
p->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ p->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ p->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
p->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
} else {
- rc = get_vsb_post_rs_pck_err(dev_addr, &pkt);
+ rc = get_vsb_post_rs_pck_err(dev_addr, &err, &pkt);
if (rc != 0) {
pr_err("error %d getting UCB\n", rc);
p->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
} else {
p->block_error.stat[0].scale = FE_SCALE_COUNTER;
- p->block_error.stat[0].uvalue += pkt;
+ p->block_error.stat[0].uvalue += err;
+ p->block_count.stat[0].scale = FE_SCALE_COUNTER;
+ p->block_count.stat[0].uvalue += pkt;
}
/* PostViterbi is compute in steps of 10^(-6) */
- rc = get_vs_bpre_viterbi_ber(dev_addr, &ber);
+ rc = get_vs_bpre_viterbi_ber(dev_addr, &ber, &cnt);
if (rc != 0) {
pr_err("error %d getting pre-ber\n", rc);
p->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
@@ -10708,10 +10711,10 @@ ctrl_sig_quality(struct drx_demod_instance *demod,
p->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER;
p->pre_bit_error.stat[0].uvalue += ber;
p->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER;
- p->pre_bit_count.stat[0].uvalue += 1000000;
+ p->pre_bit_count.stat[0].uvalue += cnt;
}
- rc = get_vs_bpost_viterbi_ber(dev_addr, &ber);
+ rc = get_vs_bpost_viterbi_ber(dev_addr, &ber, &cnt);
if (rc != 0) {
pr_err("error %d getting post-ber\n", rc);
p->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
@@ -10719,7 +10722,7 @@ ctrl_sig_quality(struct drx_demod_instance *demod,
p->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
p->post_bit_error.stat[0].uvalue += ber;
p->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
- p->post_bit_count.stat[0].uvalue += 1000000;
+ p->post_bit_count.stat[0].uvalue += cnt;
}
rc = get_vsbmer(dev_addr, &mer);
if (rc != 0) {
@@ -11966,7 +11969,15 @@ static int drx39xxj_read_ber(struct dvb_frontend *fe, u32 *ber)
return 0;
}
- *ber = p->pre_bit_error.stat[0].uvalue;
+ if (!p->pre_bit_count.stat[0].uvalue) {
+ if (!p->pre_bit_error.stat[0].uvalue)
+ *ber = 0;
+ else
+ *ber = 1000000;
+ } else {
+ *ber = frac_times1e6(p->pre_bit_error.stat[0].uvalue,
+ p->pre_bit_count.stat[0].uvalue);
+ }
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 06:20:21 +0000