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path: root/drivers/media/dvb-frontends/af9033.c
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Diffstat (limited to 'drivers/media/dvb-frontends/af9033.c')
-rw-r--r--drivers/media/dvb-frontends/af9033.c140
1 files changed, 128 insertions, 12 deletions
diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c
index 63a89c1..82ce47b 100644
--- a/drivers/media/dvb-frontends/af9033.c
+++ b/drivers/media/dvb-frontends/af9033.c
@@ -291,6 +291,12 @@ static int af9033_init(struct dvb_frontend *fe)
if (clock_adc_lut[i].clock == dev->cfg.clock)
break;
}
+ if (i == ARRAY_SIZE(clock_adc_lut)) {
+ dev_err(&dev->client->dev,
+ "Couldn't find ADC config for clock=%d\n",
+ dev->cfg.clock);
+ goto err;
+ }
adc_cw = af9033_div(dev, clock_adc_lut[i].adc, 1000000ul, 19ul);
buf[0] = (adc_cw >> 0) & 0xff;
@@ -580,7 +586,15 @@ static int af9033_set_frontend(struct dvb_frontend *fe)
break;
}
}
- ret = af9033_wr_regs(dev, 0x800001,
+ if (i == ARRAY_SIZE(coeff_lut)) {
+ dev_err(&dev->client->dev,
+ "Couldn't find LUT config for clock=%d\n",
+ dev->cfg.clock);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = af9033_wr_regs(dev, 0x800001,
coeff_lut[i].val, sizeof(coeff_lut[i].val));
}
@@ -592,6 +606,13 @@ static int af9033_set_frontend(struct dvb_frontend *fe)
if (clock_adc_lut[i].clock == dev->cfg.clock)
break;
}
+ if (i == ARRAY_SIZE(clock_adc_lut)) {
+ dev_err(&dev->client->dev,
+ "Couldn't find ADC clock for clock=%d\n",
+ dev->cfg.clock);
+ ret = -EINVAL;
+ goto err;
+ }
adc_freq = clock_adc_lut[i].adc;
/* get used IF frequency */
@@ -849,29 +870,97 @@ static int af9033_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct af9033_dev *dev = fe->demodulator_priv;
struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache;
+ int ret;
+ u8 u8tmp;
/* use DVBv5 CNR */
- if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
- *snr = div_s64(c->cnr.stat[0].svalue, 100); /* 1000x => 10x */
- else
+ if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL) {
+ /* Return 0.1 dB for AF9030 and 0-0xffff for IT9130. */
+ if (dev->is_af9035) {
+ /* 1000x => 10x (0.1 dB) */
+ *snr = div_s64(c->cnr.stat[0].svalue, 100);
+ } else {
+ /* 1000x => 1x (1 dB) */
+ *snr = div_s64(c->cnr.stat[0].svalue, 1000);
+
+ /* read current modulation */
+ ret = af9033_rd_reg(dev, 0x80f903, &u8tmp);
+ if (ret)
+ goto err;
+
+ /* scale value to 0x0000-0xffff */
+ switch ((u8tmp >> 0) & 3) {
+ case 0:
+ *snr = *snr * 0xffff / 23;
+ break;
+ case 1:
+ *snr = *snr * 0xffff / 26;
+ break;
+ case 2:
+ *snr = *snr * 0xffff / 32;
+ break;
+ default:
+ goto err;
+ }
+ }
+ } else {
*snr = 0;
+ }
return 0;
+
+err:
+ dev_dbg(&dev->client->dev, "failed=%d\n", ret);
+
+ return ret;
}
static int af9033_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct af9033_dev *dev = fe->demodulator_priv;
- int ret;
- u8 strength2;
+ struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache;
+ int ret, tmp, power_real;
+ u8 u8tmp, gain_offset, buf[7];
- /* read signal strength of 0-100 scale */
- ret = af9033_rd_reg(dev, 0x800048, &strength2);
- if (ret < 0)
- goto err;
+ if (dev->is_af9035) {
+ /* read signal strength of 0-100 scale */
+ ret = af9033_rd_reg(dev, 0x800048, &u8tmp);
+ if (ret < 0)
+ goto err;
+
+ /* scale value to 0x0000-0xffff */
+ *strength = u8tmp * 0xffff / 100;
+ } else {
+ ret = af9033_rd_reg(dev, 0x8000f7, &u8tmp);
+ if (ret < 0)
+ goto err;
+
+ ret = af9033_rd_regs(dev, 0x80f900, buf, 7);
+ if (ret < 0)
+ goto err;
+
+ if (c->frequency <= 300000000)
+ gain_offset = 7; /* VHF */
+ else
+ gain_offset = 4; /* UHF */
+
+ power_real = (u8tmp - 100 - gain_offset) -
+ power_reference[((buf[3] >> 0) & 3)][((buf[6] >> 0) & 7)];
+
+ if (power_real < -15)
+ tmp = 0;
+ else if ((power_real >= -15) && (power_real < 0))
+ tmp = (2 * (power_real + 15)) / 3;
+ else if ((power_real >= 0) && (power_real < 20))
+ tmp = 4 * power_real + 10;
+ else if ((power_real >= 20) && (power_real < 35))
+ tmp = (2 * (power_real - 20)) / 3 + 90;
+ else
+ tmp = 100;
- /* scale value to 0x0000-0xffff */
- *strength = strength2 * 0xffff / 100;
+ /* scale value to 0x0000-0xffff */
+ *strength = tmp * 0xffff / 100;
+ }
return 0;
@@ -1011,6 +1100,33 @@ static void af9033_stat_work(struct work_struct *work)
snr_val = (buf[2] << 16) | (buf[1] << 8) | (buf[0] << 0);
+ /* read superframe number */
+ ret = af9033_rd_reg(dev, 0x80f78b, &u8tmp);
+ if (ret)
+ goto err;
+
+ if (u8tmp)
+ snr_val /= u8tmp;
+
+ /* read current transmission mode */
+ ret = af9033_rd_reg(dev, 0x80f900, &u8tmp);
+ if (ret)
+ goto err;
+
+ switch ((u8tmp >> 0) & 3) {
+ case 0:
+ snr_val *= 4;
+ break;
+ case 1:
+ snr_val *= 1;
+ break;
+ case 2:
+ snr_val *= 2;
+ break;
+ default:
+ goto err_schedule_delayed_work;
+ }
+
/* read current modulation */
ret = af9033_rd_reg(dev, 0x80f903, &u8tmp);
if (ret)
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