iio: adc: ad9361: Add the axi-half-dac-rate-enable option

Cherry-pick from : commit 708ef4d ("iio: adc: ad9361: Add the axi-half-dac-rate-enable option") Signed-off-by: Sergiu Cuciurean <[email protected]>
analogdevicesinc · Nov 28, 2019 · 819e1df · 819e1df
1 parent 3979b2c
commit 819e1df
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Showing 3 changed files with 11 additions and 2 deletions.
diff --git a/drivers/iio/adc/ad9361.h b/drivers/iio/adc/ad9361.h
@@ -177,6 +177,7 @@ int ad9361_dig_tune(struct ad9361_rf_phy *phy, unsigned long max_freq,
 int ad9361_tx_mute(struct ad9361_rf_phy *phy, u32 state);
 int ad9361_write_bist_reg(struct ad9361_rf_phy *phy, u32 val);
 bool ad9361_uses_rx2tx2(struct ad9361_rf_phy *phy);
+bool ad9361_axi_half_dac_rate(struct ad9361_rf_phy *phy);
 int ad9361_get_dig_tune_data(struct ad9361_rf_phy *phy,
 			     struct ad9361_dig_tune_data *data);
 int ad9361_read_clock_data_delays(struct ad9361_rf_phy *phy);

diff --git a/drivers/iio/adc/ad9361_conv.c b/drivers/iio/adc/ad9361_conv.c
@@ -679,6 +679,7 @@ static int ad9361_post_setup(struct iio_dev *indio_dev)
 	struct axiadc_converter *conv = iio_device_get_drvdata(indio_dev);
 	struct ad9361_rf_phy *phy = conv->phy;
 	bool rx2tx2 = ad9361_uses_rx2tx2(phy);
+	bool half_rate = ad9361_axi_half_dac_rate(phy);
 	unsigned tmp, num_chan, flags;
 	unsigned int skipmode;
 	int i, ret;
@@ -695,13 +696,19 @@ static int ad9361_post_setup(struct iio_dev *indio_dev)
 
 	if (!rx2tx2) {
 		axiadc_write(st, 0x4048, tmp | BIT(5)); /* R1_MODE */
-		axiadc_write(st, 0x404c,
+		if (!half_rate)
+			axiadc_write(st, 0x404c,
 			     ad9361_uses_lvds_mode(phy) ? 1 : 0); /* RATE */
+		else
+			axiadc_write(st, 0x404c, 0);
 	} else {
 		tmp &= ~BIT(5);
 		axiadc_write(st, 0x4048, tmp);
-		axiadc_write(st, 0x404c,
+		if (!half_rate)
+			axiadc_write(st, 0x404c,
 			     ad9361_uses_lvds_mode(phy) ? 3 : 1); /* RATE */
+		else
+			axiadc_write(st, 0x404c, 1);
 	}
 
 	for (i = 0; i < num_chan; i++) {

diff --git a/drivers/iio/adc/ad9361_private.h b/drivers/iio/adc/ad9361_private.h
@@ -376,6 +376,7 @@ struct ad9361_phy_platform_data {
 	struct gpio_desc			*cal_sw1_gpio;
 	struct gpio_desc			*cal_sw2_gpio;
 
+	bool		axi_half_dac_rate_en;
 };
 
 struct rf_rx_gain {