patch "iio: adc: ad7124: Enable internal reference" added to staging-linus

This is a note to let you know that I've just added the patch titled

iio: adc: ad7124: Enable internal reference

to my staging git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
in the staging-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 11d7c8d3b1259c303fb52789febed58f0bc35ad1 Mon Sep 17 00:00:00 2001
From: Mircea Caprioru <[email protected]>
Date: Mon, 18 Nov 2019 10:38:57 +0200
Subject: iio: adc: ad7124: Enable internal reference

When the internal reference was selected by a channel it was not enabled. This patch fixes that and enables it.

---
 drivers/iio/adc/ad7124.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

index edc6f1cc90b2..3f03abf100b5 100644
@@ -39,6 +39,8 @@
 #define AD7124_STATUS_POR_FLAG_MSK	BIT(4)
 
 /* AD7124_ADC_CONTROL */
+#define AD7124_ADC_CTRL_REF_EN_MSK	BIT(8)
+#define AD7124_ADC_CTRL_REF_EN(x)	FIELD_PREP(AD7124_ADC_CTRL_REF_EN_MSK, x)
 #define AD7124_ADC_CTRL_PWR_MSK	GENMASK(7, 6)
 #define AD7124_ADC_CTRL_PWR(x)		FIELD_PREP(AD7124_ADC_CTRL_PWR_MSK, x)
 #define AD7124_ADC_CTRL_MODE_MSK	GENMASK(5, 2)

@@ -424,7 +426,10 @@ static int ad7124_init_channel_vref(struct ad7124_state *st,
 		break;
 	case AD7124_INT_REF:
 		st->channel_config[channel_number].vref_mv = 2500;
-		break;
+		st->adc_control &= ~AD7124_ADC_CTRL_REF_EN_MSK;
+		st->adc_control |= AD7124_ADC_CTRL_REF_EN(1);
+		return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL,
+				      2, st->adc_control);
 	default:
 		dev_err(&st->sd.spi->dev, "Invalid reference %d\n", refsel);
 		return -EINVAL;

2.24.0