Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 991fd95e authored by Mircea Caprioru's avatar Mircea Caprioru Committed by Greg Kroah-Hartman
Browse files

iio: adc: ad7124: Enable internal reference 



commit 11d7c8d3b1259c303fb52789febed58f0bc35ad1 upstream.

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

Fixes: b3af341b ("iio: adc: Add ad7124 support")
Signed-off-by: default avatarMircea Caprioru <mircea.caprioru@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 187e07d9

drivers/iio/adc/ad7124.c

+6 −1
Original line number Diff line number Diff line
@@ -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;