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path: root/drivers/media/common/tuners/tda18271-fe.c
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Diffstat (limited to 'drivers/media/common/tuners/tda18271-fe.c')
-rw-r--r--drivers/media/common/tuners/tda18271-fe.c168
1 files changed, 113 insertions, 55 deletions
diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
index b262100ae897..89c01fb1f859 100644
--- a/drivers/media/common/tuners/tda18271-fe.c
+++ b/drivers/media/common/tuners/tda18271-fe.c
@@ -51,6 +51,7 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
+ int ret;
u32 N;
/* update TV broadcast parameters */
@@ -85,7 +86,9 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
/* update rf top / if top */
regs[R_EB22] = 0x00;
regs[R_EB22] |= map->rfagc_top;
- tda18271_write_regs(fe, R_EB22, 1);
+ ret = tda18271_write_regs(fe, R_EB22, 1);
+ if (tda_fail(ret))
+ goto fail;
/* --------------------------------------------------------------- */
@@ -121,7 +124,9 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
/* agc1 has priority on agc2 */
regs[R_EB1] &= ~0x01;
- tda18271_write_regs(fe, R_EB1, 1);
+ ret = tda18271_write_regs(fe, R_EB1, 1);
+ if (tda_fail(ret))
+ goto fail;
/* --------------------------------------------------------------- */
@@ -141,7 +146,9 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
break;
}
- tda18271_write_regs(fe, R_TM, 7);
+ ret = tda18271_write_regs(fe, R_TM, 7);
+ if (tda_fail(ret))
+ goto fail;
/* force charge pump source */
charge_pump_source(fe, 1);
@@ -158,9 +165,9 @@ static int tda18271_channel_configuration(struct dvb_frontend *fe,
regs[R_EP3] &= ~0x04;
else
regs[R_EP3] |= 0x04;
- tda18271_write_regs(fe, R_EP3, 1);
-
- return 0;
+ ret = tda18271_write_regs(fe, R_EP3, 1);
+fail:
+ return ret;
}
static int tda18271_read_thermometer(struct dvb_frontend *fe)
@@ -213,11 +220,13 @@ static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
struct tda18271_priv *priv = fe->tuner_priv;
struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
unsigned char *regs = priv->tda18271_regs;
- int tm_current, rfcal_comp, approx, i;
+ int tm_current, rfcal_comp, approx, i, ret;
u8 dc_over_dt, rf_tab;
/* power up */
- tda18271_set_standby_mode(fe, 0, 0, 0);
+ ret = tda18271_set_standby_mode(fe, 0, 0, 0);
+ if (tda_fail(ret))
+ goto fail;
/* read die current temperature */
tm_current = tda18271_read_thermometer(fe);
@@ -228,8 +237,8 @@ static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
rf_tab = regs[R_EB14];
i = tda18271_lookup_rf_band(fe, &freq, NULL);
- if (i < 0)
- return -EINVAL;
+ if (tda_fail(i))
+ return i;
if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
approx = map[i].rf_a1 *
@@ -250,35 +259,42 @@ static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
regs[R_EB14] = approx + rfcal_comp;
- tda18271_write_regs(fe, R_EB14, 1);
-
- return 0;
+ ret = tda18271_write_regs(fe, R_EB14, 1);
+fail:
+ return ret;
}
static int tda18271_por(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
+ int ret;
/* power up detector 1 */
regs[R_EB12] &= ~0x20;
- tda18271_write_regs(fe, R_EB12, 1);
+ ret = tda18271_write_regs(fe, R_EB12, 1);
+ if (tda_fail(ret))
+ goto fail;
regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
- tda18271_write_regs(fe, R_EB18, 1);
+ ret = tda18271_write_regs(fe, R_EB18, 1);
+ if (tda_fail(ret))
+ goto fail;
regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
/* POR mode */
- tda18271_set_standby_mode(fe, 1, 0, 0);
+ ret = tda18271_set_standby_mode(fe, 1, 0, 0);
+ if (tda_fail(ret))
+ goto fail;
/* disable 1.5 MHz low pass filter */
regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
- tda18271_write_regs(fe, R_EB21, 3);
-
- return 0;
+ ret = tda18271_write_regs(fe, R_EB21, 3);
+fail:
+ return ret;
}
static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
@@ -389,7 +405,7 @@ static int tda18271_powerscan(struct dvb_frontend *fe,
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
- int sgn, bcal, count, wait;
+ int sgn, bcal, count, wait, ret;
u8 cid_target;
u16 count_limit;
u32 freq;
@@ -421,7 +437,9 @@ static int tda18271_powerscan(struct dvb_frontend *fe,
tda18271_write_regs(fe, R_EP2, 1);
/* read power detection info, stored in EB10 */
- tda18271_read_extended(fe);
+ ret = tda18271_read_extended(fe);
+ if (tda_fail(ret))
+ return ret;
/* algorithm initialization */
sgn = 1;
@@ -447,7 +465,9 @@ static int tda18271_powerscan(struct dvb_frontend *fe,
tda18271_write_regs(fe, R_EP2, 1);
/* read power detection info, stored in EB10 */
- tda18271_read_extended(fe);
+ ret = tda18271_read_extended(fe);
+ if (tda_fail(ret))
+ return ret;
count += 200;
@@ -478,6 +498,7 @@ static int tda18271_powerscan_init(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
+ int ret;
/* set standard to digital */
regs[R_EP3] &= ~0x1f; /* clear std bits */
@@ -489,10 +510,14 @@ static int tda18271_powerscan_init(struct dvb_frontend *fe)
/* update IF output level & IF notch frequency */
regs[R_EP4] &= ~0x1c; /* clear if level bits */
- tda18271_write_regs(fe, R_EP3, 2);
+ ret = tda18271_write_regs(fe, R_EP3, 2);
+ if (tda_fail(ret))
+ goto fail;
regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
- tda18271_write_regs(fe, R_EB18, 1);
+ ret = tda18271_write_regs(fe, R_EB18, 1);
+ if (tda_fail(ret))
+ goto fail;
regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
@@ -500,9 +525,9 @@ static int tda18271_powerscan_init(struct dvb_frontend *fe)
regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
- tda18271_write_regs(fe, R_EB21, 3);
-
- return 0;
+ ret = tda18271_write_regs(fe, R_EB21, 3);
+fail:
+ return ret;
}
static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
@@ -521,7 +546,7 @@ static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
i = tda18271_lookup_rf_band(fe, &freq, NULL);
- if (i < 0)
+ if (tda_fail(i))
return i;
rf_default[RF1] = 1000 * map[i].rf1_def;
@@ -535,6 +560,8 @@ static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
/* look for optimized calibration frequency */
bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
+ if (tda_fail(bcal))
+ return bcal;
tda18271_calc_rf_cal(fe, &rf_freq[rf]);
prog_tab[rf] = regs[R_EB14];
@@ -575,22 +602,29 @@ static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned int i;
+ int ret;
tda_info("tda18271: performing RF tracking filter calibration\n");
/* wait for die temperature stabilization */
msleep(200);
- tda18271_powerscan_init(fe);
+ ret = tda18271_powerscan_init(fe);
+ if (tda_fail(ret))
+ goto fail;
/* rf band calibration */
- for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++)
+ for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) {
+ ret =
tda18271_rf_tracking_filters_init(fe, 1000 *
priv->rf_cal_state[i].rfmax);
+ if (tda_fail(ret))
+ goto fail;
+ }
priv->tm_rfcal = tda18271_read_thermometer(fe);
-
- return 0;
+fail:
+ return ret;
}
/* ------------------------------------------------------------------ */
@@ -599,6 +633,7 @@ static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
+ int ret;
/* test RF_CAL_OK to see if we need init */
if ((regs[R_EP1] & 0x10) == 0)
@@ -607,15 +642,22 @@ static int tda18271c2_rf_cal_init(struct dvb_frontend *fe)
if (priv->cal_initialized)
return 0;
- tda18271_calc_rf_filter_curve(fe);
+ ret = tda18271_calc_rf_filter_curve(fe);
+ if (tda_fail(ret))
+ goto fail;
- tda18271_por(fe);
+ ret = tda18271_por(fe);
+ if (tda_fail(ret))
+ goto fail;
tda_info("tda18271: RF tracking filter calibration complete\n");
priv->cal_initialized = true;
-
- return 0;
+ goto end;
+fail:
+ tda_info("tda18271: RF tracking filter calibration failed!\n");
+end:
+ return ret;
}
static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
@@ -623,6 +665,7 @@ static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
+ int ret;
u32 N = 0;
/* calculate bp filter */
@@ -671,7 +714,10 @@ static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe,
tda18271_calc_main_pll(fe, N);
- tda18271_write_regs(fe, R_EP3, 11);
+ ret = tda18271_write_regs(fe, R_EP3, 11);
+ if (tda_fail(ret))
+ return ret;
+
msleep(5); /* RF tracking filter calibration initialization */
/* search for K,M,CO for RF calibration */
@@ -719,45 +765,56 @@ static int tda18271_ir_cal_init(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
unsigned char *regs = priv->tda18271_regs;
+ int ret;
- tda18271_read_regs(fe);
+ ret = tda18271_read_regs(fe);
+ if (tda_fail(ret))
+ goto fail;
/* test IR_CAL_OK to see if we need init */
if ((regs[R_EP1] & 0x08) == 0)
- tda18271_init_regs(fe);
-
- return 0;
+ ret = tda18271_init_regs(fe);
+fail:
+ return ret;
}
static int tda18271_init(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
+ int ret;
mutex_lock(&priv->lock);
/* power up */
- tda18271_set_standby_mode(fe, 0, 0, 0);
+ ret = tda18271_set_standby_mode(fe, 0, 0, 0);
+ if (tda_fail(ret))
+ goto fail;
/* initialization */
- tda18271_ir_cal_init(fe);
+ ret = tda18271_ir_cal_init(fe);
+ if (tda_fail(ret))
+ goto fail;
if (priv->id == TDA18271HDC2)
tda18271c2_rf_cal_init(fe);
-
+fail:
mutex_unlock(&priv->lock);
- return 0;
+ return ret;
}
static int tda18271_tune(struct dvb_frontend *fe,
struct tda18271_std_map_item *map, u32 freq, u32 bw)
{
struct tda18271_priv *priv = fe->tuner_priv;
+ int ret;
tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n",
freq, map->if_freq, bw, map->agc_mode, map->std);
- tda18271_init(fe);
+ ret = tda18271_init(fe);
+ if (tda_fail(ret))
+ goto fail;
mutex_lock(&priv->lock);
@@ -769,11 +826,11 @@ static int tda18271_tune(struct dvb_frontend *fe,
tda18271c2_rf_tracking_filters_correction(fe, freq);
break;
}
- tda18271_channel_configuration(fe, map, freq, bw);
+ ret = tda18271_channel_configuration(fe, map, freq, bw);
mutex_unlock(&priv->lock);
-
- return 0;
+fail:
+ return ret;
}
/* ------------------------------------------------------------------ */
@@ -837,7 +894,7 @@ static int tda18271_set_params(struct dvb_frontend *fe,
ret = tda18271_tune(fe, map, freq, bw);
- if (ret < 0)
+ if (tda_fail(ret))
goto fail;
priv->frequency = freq;
@@ -893,7 +950,7 @@ static int tda18271_set_analog_params(struct dvb_frontend *fe,
ret = tda18271_tune(fe, map, freq, 0);
- if (ret < 0)
+ if (tda_fail(ret))
goto fail;
priv->frequency = freq;
@@ -905,16 +962,17 @@ fail:
static int tda18271_sleep(struct dvb_frontend *fe)
{
struct tda18271_priv *priv = fe->tuner_priv;
+ int ret;
mutex_lock(&priv->lock);
/* standby mode w/ slave tuner output
* & loop thru & xtal oscillator on */
- tda18271_set_standby_mode(fe, 1, 0, 0);
+ ret = tda18271_set_standby_mode(fe, 1, 0, 0);
mutex_unlock(&priv->lock);
- return 0;
+ return ret;
}
static int tda18271_release(struct dvb_frontend *fe)
@@ -1095,10 +1153,10 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
if (cfg)
priv->small_i2c = cfg->small_i2c;
- if (tda18271_get_id(fe) < 0)
+ if (tda_fail(tda18271_get_id(fe)))
goto fail;
- if (tda18271_assign_map_layout(fe) < 0)
+ if (tda_fail(tda18271_assign_map_layout(fe)))
goto fail;
mutex_lock(&priv->lock);
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-26 06:19:01 +0000