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Subject: [media] cxd2820r: wrap legacy DVBv3 statistics via DVBv5 statistics
Author:  Antti Palosaari <cr...@iki.fi>
Date:    Tue Aug 9 14:58:21 2016 -0300

Return DVBv5 statistics via legacy DVBv3 API.

Signed-off-by: Antti Palosaari <cr...@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>

 drivers/media/dvb-frontends/cxd2820r_c.c    | 108 ----------------------------
 drivers/media/dvb-frontends/cxd2820r_core.c |  85 ++++++----------------
 drivers/media/dvb-frontends/cxd2820r_priv.h |  25 +------
 drivers/media/dvb-frontends/cxd2820r_t.c    |  94 ------------------------
 drivers/media/dvb-frontends/cxd2820r_t2.c   |  87 ----------------------
 5 files changed, 22 insertions(+), 377 deletions(-)

---

diff --git a/drivers/media/dvb-frontends/cxd2820r_c.c 
b/drivers/media/dvb-frontends/cxd2820r_c.c
index 7cdcd5535d06..82df94413aeb 100644
--- a/drivers/media/dvb-frontends/cxd2820r_c.c
+++ b/drivers/media/dvb-frontends/cxd2820r_c.c
@@ -149,114 +149,6 @@ error:
        return ret;
 }
 
-int cxd2820r_read_ber_c(struct dvb_frontend *fe, u32 *ber)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[3], start_ber = 0;
-       *ber = 0;
-
-       if (priv->ber_running) {
-               ret = cxd2820r_rd_regs(priv, 0x10076, buf, sizeof(buf));
-               if (ret)
-                       goto error;
-
-               if ((buf[2] >> 7) & 0x01 || (buf[2] >> 4) & 0x01) {
-                       *ber = (buf[2] & 0x0f) << 16 | buf[1] << 8 | buf[0];
-                       start_ber = 1;
-               }
-       } else {
-               priv->ber_running = true;
-               start_ber = 1;
-       }
-
-       if (start_ber) {
-               /* (re)start BER */
-               ret = cxd2820r_wr_reg(priv, 0x10079, 0x01);
-               if (ret)
-                       goto error;
-       }
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_signal_strength_c(struct dvb_frontend *fe,
-       u16 *strength)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[2];
-       u16 tmp;
-
-       ret = cxd2820r_rd_regs(priv, 0x10049, buf, sizeof(buf));
-       if (ret)
-               goto error;
-
-       tmp = (buf[0] & 0x03) << 8 | buf[1];
-       tmp = (~tmp & 0x03ff);
-
-       if (tmp == 512)
-               /* ~no signal */
-               tmp = 0;
-       else if (tmp > 350)
-               tmp = 350;
-
-       /* scale value to 0x0000-0xffff */
-       *strength = tmp * 0xffff / (350-0);
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_snr_c(struct dvb_frontend *fe, u16 *snr)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 tmp;
-       unsigned int A, B;
-       /* report SNR in dB * 10 */
-
-       ret = cxd2820r_rd_reg(priv, 0x10019, &tmp);
-       if (ret)
-               goto error;
-
-       if (((tmp >> 0) & 0x03) % 2) {
-               A = 875;
-               B = 650;
-       } else {
-               A = 950;
-               B = 760;
-       }
-
-       ret = cxd2820r_rd_reg(priv, 0x1004d, &tmp);
-       if (ret)
-               goto error;
-
-       #define CXD2820R_LOG2_E_24 24204406 /* log2(e) << 24 */
-       if (tmp)
-               *snr = A * (intlog2(B / tmp) >> 5) / (CXD2820R_LOG2_E_24 >> 5)
-                       / 10;
-       else
-               *snr = 0;
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_ucblocks_c(struct dvb_frontend *fe, u32 *ucblocks)
-{
-       *ucblocks = 0;
-       /* no way to read ? */
-       return 0;
-}
-
 int cxd2820r_read_status_c(struct dvb_frontend *fe, enum fe_status *status)
 {
        struct cxd2820r_priv *priv = fe->demodulator_priv;
diff --git a/drivers/media/dvb-frontends/cxd2820r_core.c 
b/drivers/media/dvb-frontends/cxd2820r_core.c
index 314d3b8c1080..66da8212cb60 100644
--- a/drivers/media/dvb-frontends/cxd2820r_core.c
+++ b/drivers/media/dvb-frontends/cxd2820r_core.c
@@ -345,101 +345,58 @@ static int cxd2820r_get_frontend(struct dvb_frontend *fe,
 static int cxd2820r_read_ber(struct dvb_frontend *fe, u32 *ber)
 {
        struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
 
        dev_dbg(&priv->i2c->dev, "%s: delsys=%d\n", __func__,
                        fe->dtv_property_cache.delivery_system);
 
-       switch (fe->dtv_property_cache.delivery_system) {
-       case SYS_DVBT:
-               ret = cxd2820r_read_ber_t(fe, ber);
-               break;
-       case SYS_DVBT2:
-               ret = cxd2820r_read_ber_t2(fe, ber);
-               break;
-       case SYS_DVBC_ANNEX_A:
-               ret = cxd2820r_read_ber_c(fe, ber);
-               break;
-       default:
-               ret = -EINVAL;
-               break;
-       }
-       return ret;
+       *ber = (priv->post_bit_error - priv->post_bit_error_prev_dvbv3);
+       priv->post_bit_error_prev_dvbv3 = priv->post_bit_error;
+
+       return 0;
 }
 
 static int cxd2820r_read_signal_strength(struct dvb_frontend *fe, u16 
*strength)
 {
        struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
+       struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 
        dev_dbg(&priv->i2c->dev, "%s: delsys=%d\n", __func__,
                        fe->dtv_property_cache.delivery_system);
 
-       switch (fe->dtv_property_cache.delivery_system) {
-       case SYS_DVBT:
-               ret = cxd2820r_read_signal_strength_t(fe, strength);
-               break;
-       case SYS_DVBT2:
-               ret = cxd2820r_read_signal_strength_t2(fe, strength);
-               break;
-       case SYS_DVBC_ANNEX_A:
-               ret = cxd2820r_read_signal_strength_c(fe, strength);
-               break;
-       default:
-               ret = -EINVAL;
-               break;
-       }
-       return ret;
+       if (c->strength.stat[0].scale == FE_SCALE_RELATIVE)
+               *strength = c->strength.stat[0].uvalue;
+       else
+               *strength = 0;
+
+       return 0;
 }
 
 static int cxd2820r_read_snr(struct dvb_frontend *fe, u16 *snr)
 {
        struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
+       struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 
        dev_dbg(&priv->i2c->dev, "%s: delsys=%d\n", __func__,
                        fe->dtv_property_cache.delivery_system);
 
-       switch (fe->dtv_property_cache.delivery_system) {
-       case SYS_DVBT:
-               ret = cxd2820r_read_snr_t(fe, snr);
-               break;
-       case SYS_DVBT2:
-               ret = cxd2820r_read_snr_t2(fe, snr);
-               break;
-       case SYS_DVBC_ANNEX_A:
-               ret = cxd2820r_read_snr_c(fe, snr);
-               break;
-       default:
-               ret = -EINVAL;
-               break;
-       }
-       return ret;
+       if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
+               *snr = div_s64(c->cnr.stat[0].svalue, 100);
+       else
+               *snr = 0;
+
+       return 0;
 }
 
 static int cxd2820r_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
 {
        struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
 
        dev_dbg(&priv->i2c->dev, "%s: delsys=%d\n", __func__,
                        fe->dtv_property_cache.delivery_system);
 
-       switch (fe->dtv_property_cache.delivery_system) {
-       case SYS_DVBT:
-               ret = cxd2820r_read_ucblocks_t(fe, ucblocks);
-               break;
-       case SYS_DVBT2:
-               ret = cxd2820r_read_ucblocks_t2(fe, ucblocks);
-               break;
-       case SYS_DVBC_ANNEX_A:
-               ret = cxd2820r_read_ucblocks_c(fe, ucblocks);
-               break;
-       default:
-               ret = -EINVAL;
-               break;
-       }
-       return ret;
+       *ucblocks = 0;
+
+       return 0;
 }
 
 static int cxd2820r_init(struct dvb_frontend *fe)
diff --git a/drivers/media/dvb-frontends/cxd2820r_priv.h 
b/drivers/media/dvb-frontends/cxd2820r_priv.h
index a97570b7fa1d..66b19dd1f186 100644
--- a/drivers/media/dvb-frontends/cxd2820r_priv.h
+++ b/drivers/media/dvb-frontends/cxd2820r_priv.h
@@ -41,6 +41,7 @@ struct cxd2820r_priv {
        struct i2c_adapter *i2c;
        struct dvb_frontend fe;
        struct cxd2820r_config cfg;
+       u64 post_bit_error_prev_dvbv3;
        u64 post_bit_error;
 
        bool ber_running;
@@ -87,14 +88,6 @@ int cxd2820r_set_frontend_c(struct dvb_frontend *fe);
 
 int cxd2820r_read_status_c(struct dvb_frontend *fe, enum fe_status *status);
 
-int cxd2820r_read_ber_c(struct dvb_frontend *fe, u32 *ber);
-
-int cxd2820r_read_signal_strength_c(struct dvb_frontend *fe, u16 *strength);
-
-int cxd2820r_read_snr_c(struct dvb_frontend *fe, u16 *snr);
-
-int cxd2820r_read_ucblocks_c(struct dvb_frontend *fe, u32 *ucblocks);
-
 int cxd2820r_init_c(struct dvb_frontend *fe);
 
 int cxd2820r_sleep_c(struct dvb_frontend *fe);
@@ -111,14 +104,6 @@ int cxd2820r_set_frontend_t(struct dvb_frontend *fe);
 
 int cxd2820r_read_status_t(struct dvb_frontend *fe, enum fe_status *status);
 
-int cxd2820r_read_ber_t(struct dvb_frontend *fe, u32 *ber);
-
-int cxd2820r_read_signal_strength_t(struct dvb_frontend *fe, u16 *strength);
-
-int cxd2820r_read_snr_t(struct dvb_frontend *fe, u16 *snr);
-
-int cxd2820r_read_ucblocks_t(struct dvb_frontend *fe, u32 *ucblocks);
-
 int cxd2820r_init_t(struct dvb_frontend *fe);
 
 int cxd2820r_sleep_t(struct dvb_frontend *fe);
@@ -135,14 +120,6 @@ int cxd2820r_set_frontend_t2(struct dvb_frontend *fe);
 
 int cxd2820r_read_status_t2(struct dvb_frontend *fe, enum fe_status *status);
 
-int cxd2820r_read_ber_t2(struct dvb_frontend *fe, u32 *ber);
-
-int cxd2820r_read_signal_strength_t2(struct dvb_frontend *fe, u16 *strength);
-
-int cxd2820r_read_snr_t2(struct dvb_frontend *fe, u16 *snr);
-
-int cxd2820r_read_ucblocks_t2(struct dvb_frontend *fe, u32 *ucblocks);
-
 int cxd2820r_init_t2(struct dvb_frontend *fe);
 
 int cxd2820r_sleep_t2(struct dvb_frontend *fe);
diff --git a/drivers/media/dvb-frontends/cxd2820r_t.c 
b/drivers/media/dvb-frontends/cxd2820r_t.c
index d402ab68368b..ddd8e46511a9 100644
--- a/drivers/media/dvb-frontends/cxd2820r_t.c
+++ b/drivers/media/dvb-frontends/cxd2820r_t.c
@@ -254,100 +254,6 @@ error:
        return ret;
 }
 
-int cxd2820r_read_ber_t(struct dvb_frontend *fe, u32 *ber)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[3], start_ber = 0;
-       *ber = 0;
-
-       if (priv->ber_running) {
-               ret = cxd2820r_rd_regs(priv, 0x00076, buf, sizeof(buf));
-               if (ret)
-                       goto error;
-
-               if ((buf[2] >> 7) & 0x01 || (buf[2] >> 4) & 0x01) {
-                       *ber = (buf[2] & 0x0f) << 16 | buf[1] << 8 | buf[0];
-                       start_ber = 1;
-               }
-       } else {
-               priv->ber_running = true;
-               start_ber = 1;
-       }
-
-       if (start_ber) {
-               /* (re)start BER */
-               ret = cxd2820r_wr_reg(priv, 0x00079, 0x01);
-               if (ret)
-                       goto error;
-       }
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_signal_strength_t(struct dvb_frontend *fe,
-       u16 *strength)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[2];
-       u16 tmp;
-
-       ret = cxd2820r_rd_regs(priv, 0x00026, buf, sizeof(buf));
-       if (ret)
-               goto error;
-
-       tmp = (buf[0] & 0x0f) << 8 | buf[1];
-       tmp = ~tmp & 0x0fff;
-
-       /* scale value to 0x0000-0xffff from 0x0000-0x0fff */
-       *strength = tmp * 0xffff / 0x0fff;
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_snr_t(struct dvb_frontend *fe, u16 *snr)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[2];
-       u16 tmp;
-       /* report SNR in dB * 10 */
-
-       ret = cxd2820r_rd_regs(priv, 0x00028, buf, sizeof(buf));
-       if (ret)
-               goto error;
-
-       tmp = (buf[0] & 0x1f) << 8 | buf[1];
-       #define CXD2820R_LOG10_8_24 15151336 /* log10(8) << 24 */
-       if (tmp)
-               *snr = (intlog10(tmp) - CXD2820R_LOG10_8_24) / ((1 << 24)
-                       / 100);
-       else
-               *snr = 0;
-
-       dev_dbg(&priv->i2c->dev, "%s: dBx10=%d val=%04x\n", __func__, *snr,
-                       tmp);
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_ucblocks_t(struct dvb_frontend *fe, u32 *ucblocks)
-{
-       *ucblocks = 0;
-       /* no way to read ? */
-       return 0;
-}
-
 int cxd2820r_read_status_t(struct dvb_frontend *fe, enum fe_status *status)
 {
        struct cxd2820r_priv *priv = fe->demodulator_priv;
diff --git a/drivers/media/dvb-frontends/cxd2820r_t2.c 
b/drivers/media/dvb-frontends/cxd2820r_t2.c
index e2875f2655bd..e09f1527ef0c 100644
--- a/drivers/media/dvb-frontends/cxd2820r_t2.c
+++ b/drivers/media/dvb-frontends/cxd2820r_t2.c
@@ -387,93 +387,6 @@ error:
        return ret;
 }
 
-int cxd2820r_read_ber_t2(struct dvb_frontend *fe, u32 *ber)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[4];
-       unsigned int errbits;
-       *ber = 0;
-       /* FIXME: correct calculation */
-
-       ret = cxd2820r_rd_regs(priv, 0x02039, buf, sizeof(buf));
-       if (ret)
-               goto error;
-
-       if ((buf[0] >> 4) & 0x01) {
-               errbits = (buf[0] & 0x0f) << 24 | buf[1] << 16 |
-                       buf[2] << 8 | buf[3];
-
-               if (errbits)
-                       *ber = errbits * 64 / 16588800;
-       }
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_signal_strength_t2(struct dvb_frontend *fe,
-       u16 *strength)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[2];
-       u16 tmp;
-
-       ret = cxd2820r_rd_regs(priv, 0x02026, buf, sizeof(buf));
-       if (ret)
-               goto error;
-
-       tmp = (buf[0] & 0x0f) << 8 | buf[1];
-       tmp = ~tmp & 0x0fff;
-
-       /* scale value to 0x0000-0xffff from 0x0000-0x0fff */
-       *strength = tmp * 0xffff / 0x0fff;
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_snr_t2(struct dvb_frontend *fe, u16 *snr)
-{
-       struct cxd2820r_priv *priv = fe->demodulator_priv;
-       int ret;
-       u8 buf[2];
-       u16 tmp;
-       /* report SNR in dB * 10 */
-
-       ret = cxd2820r_rd_regs(priv, 0x02028, buf, sizeof(buf));
-       if (ret)
-               goto error;
-
-       tmp = (buf[0] & 0x0f) << 8 | buf[1];
-       #define CXD2820R_LOG10_8_24 15151336 /* log10(8) << 24 */
-       if (tmp)
-               *snr = (intlog10(tmp) - CXD2820R_LOG10_8_24) / ((1 << 24)
-                       / 100);
-       else
-               *snr = 0;
-
-       dev_dbg(&priv->i2c->dev, "%s: dBx10=%d val=%04x\n", __func__, *snr,
-                       tmp);
-
-       return ret;
-error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
-       return ret;
-}
-
-int cxd2820r_read_ucblocks_t2(struct dvb_frontend *fe, u32 *ucblocks)
-{
-       *ucblocks = 0;
-       /* no way to read ? */
-       return 0;
-}
-
 int cxd2820r_sleep_t2(struct dvb_frontend *fe)
 {
        struct cxd2820r_priv *priv = fe->demodulator_priv;

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