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-rw-r--r--drivers/iio/accel/st_accel_core.c6
-rw-r--r--drivers/iio/adc/twl4030-madc.c34
2 files changed, 34 insertions, 6 deletions
diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index dab8b76c1427..197a08b4e2f3 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -149,8 +149,6 @@
 #define ST_ACCEL_4_BDU_MASK			0x40
 #define ST_ACCEL_4_DRDY_IRQ_ADDR		0x21
 #define ST_ACCEL_4_DRDY_IRQ_INT1_MASK		0x04
-#define ST_ACCEL_4_IG1_EN_ADDR			0x21
-#define ST_ACCEL_4_IG1_EN_MASK			0x08
 #define ST_ACCEL_4_MULTIREAD_BIT		true
 
 /* CUSTOM VALUES FOR SENSOR 5 */
@@ -489,10 +487,6 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
 		.drdy_irq = {
 			.addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
 			.mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
-			.ig1 = {
-				.en_addr = ST_ACCEL_4_IG1_EN_ADDR,
-				.en_mask = ST_ACCEL_4_IG1_EN_MASK,
-			},
 		},
 		.multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
 		.bootime = 2, /* guess */
diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index ebe415f10640..0c74869a540a 100644
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -45,13 +45,18 @@
 #include <linux/types.h>
 #include <linux/gfp.h>
 #include <linux/err.h>
+#include <linux/regulator/consumer.h>
 
 #include <linux/iio/iio.h>
 
+#define TWL4030_USB_SEL_MADC_MCPC	(1<<3)
+#define TWL4030_USB_CARKIT_ANA_CTRL	0xBB
+
 /**
  * struct twl4030_madc_data - a container for madc info
  * @dev:		Pointer to device structure for madc
  * @lock:		Mutex protecting this data structure
+ * @regulator:		Pointer to bias regulator for madc
  * @requests:		Array of request struct corresponding to SW1, SW2 and RT
  * @use_second_irq:	IRQ selection (main or co-processor)
  * @imr:		Interrupt mask register of MADC
@@ -60,6 +65,7 @@
 struct twl4030_madc_data {
 	struct device *dev;
 	struct mutex lock;	/* mutex protecting this data structure */
+	struct regulator *usb3v1;
 	struct twl4030_madc_request requests[TWL4030_MADC_NUM_METHODS];
 	bool use_second_irq;
 	u8 imr;
@@ -841,6 +847,32 @@ static int twl4030_madc_probe(struct platform_device *pdev)
 	}
 	twl4030_madc = madc;
 
+	/* Configure MADC[3:6] */
+	ret = twl_i2c_read_u8(TWL_MODULE_USB, &regval,
+			TWL4030_USB_CARKIT_ANA_CTRL);
+	if (ret) {
+		dev_err(&pdev->dev, "unable to read reg CARKIT_ANA_CTRL  0x%X\n",
+				TWL4030_USB_CARKIT_ANA_CTRL);
+		goto err_i2c;
+	}
+	regval |= TWL4030_USB_SEL_MADC_MCPC;
+	ret = twl_i2c_write_u8(TWL_MODULE_USB, regval,
+				 TWL4030_USB_CARKIT_ANA_CTRL);
+	if (ret) {
+		dev_err(&pdev->dev, "unable to write reg CARKIT_ANA_CTRL 0x%X\n",
+				TWL4030_USB_CARKIT_ANA_CTRL);
+		goto err_i2c;
+	}
+
+	/* Enable 3v1 bias regulator for MADC[3:6] */
+	madc->usb3v1 = devm_regulator_get(madc->dev, "vusb3v1");
+	if (IS_ERR(madc->usb3v1))
+		return -ENODEV;
+
+	ret = regulator_enable(madc->usb3v1);
+	if (ret)
+		dev_err(madc->dev, "could not enable 3v1 bias regulator\n");
+
 	ret = iio_device_register(iio_dev);
 	if (ret) {
 		dev_err(&pdev->dev, "could not register iio device\n");
@@ -866,6 +898,8 @@ static int twl4030_madc_remove(struct platform_device *pdev)
 	twl4030_madc_set_current_generator(madc, 0, 0);
 	twl4030_madc_set_power(madc, 0);
 
+	regulator_disable(madc->usb3v1);
+
 	return 0;
 }