From: Andreas Kemnade <andreas@kemnade.info>
Date: Sat, 17 Dec 2022 22:13:05 +0000 (+0100)
Subject: iio:adc:twl6030: Enable measurement of VAC
X-Git-Tag: baikal/aarch64/sdk6.1~14
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=5c9e81313e69e1bbf0fb866dcc7a626893a7655b;p=kernel.git

iio:adc:twl6030: Enable measurement of VAC

commit bffb7d9d1a3dbd09e083b88aefd093b3b10abbfb upstream.

VAC needs to be wired up to produce proper measurements,
without this change only near zero values are reported.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Fixes: 5a854e9c3e90 ("iio: twl6030-gpadc: TWL6030, TWL6032 GPADC driver")
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Link: https://lore.kernel.org/r/20221217221305.671117-1-andreas@kemnade.info
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
index 40438e5b49702..32873fb5f3676 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -952,7 +952,7 @@ static int twl6030_gpadc_probe(struct platform_device *pdev)
 	}
 
 	ret = twl_i2c_write_u8(TWL6030_MODULE_ID0,
-				VBAT_MEAS | BB_MEAS | BB_MEAS,
+				VBAT_MEAS | BB_MEAS | VAC_MEAS,
 				TWL6030_MISC1);
 	if (ret < 0) {
 		dev_err(dev, "failed to wire up inputs\n");