iio: adc: ad9361: Avoid checking LO synthesizer lock in power down mode

This fixes external LO mode in TDD with SPI Control or whenever
LO POWER DOWN is forced.

ad9361 spi0.1: Calibration TIMEOUT (0x247, 0x2)

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>

drivers/iio/adc/ad9361.c

@@ -3938,13 +3938,22 @@ static int ad9361_ensm_set_state(struct ad9361_rf_phy *phy, u8 ensm_state,
 
 	 if (!phy->pdata->fdd && !pinctrl && !phy->pdata->tdd_use_dual_synth &&
 		 (ensm_state == ENSM_STATE_TX || ensm_state == ENSM_STATE_RX)) {
+		u32 reg, check;
+
+		if (ensm_state == ENSM_STATE_TX) {
+			reg = REG_TX_CP_OVERRANGE_VCO_LOCK;
+			check = !(st->cached_synth_pd[0] &
+				TX_SYNTH_VCO_POWER_DOWN);
+		} else {
+			reg = REG_RX_CP_OVERRANGE_VCO_LOCK;
+			check = !(st->cached_synth_pd[1] &
+				RX_SYNTH_VCO_POWER_DOWN);
+		}
+
 		ad9361_spi_writef(phy->spi, REG_ENSM_CONFIG_2,
 				  TXNRX_SPI_CTRL, ensm_state == ENSM_STATE_TX);
-
-		ad9361_check_cal_done(phy, (ensm_state == ENSM_STATE_TX) ?
-				      REG_TX_CP_OVERRANGE_VCO_LOCK :
-				      REG_RX_CP_OVERRANGE_VCO_LOCK,
-				      VCO_LOCK, 1);
+		if (check)
+			ad9361_check_cal_done(phy, reg, VCO_LOCK, 1);
 	}
 
 	rc = ad9361_spi_write(spi, REG_ENSM_CONFIG_1, val);