linux-kernel - [PATCH] iio: admv1013: add mixer

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Date:   Mon, 7 Aug 2023 17:38:05 +0300
From:   Antoniu Miclaus <antoniu.miclaus@...log.com>
To:     <jic23@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH] iio: admv1013: add mixer_vgate corner cases

Include the corner cases in the computation of the MIXER_VGATE register
value.

According to the datasheet: The MIXER_VGATE values follows the VCM such
as, that for a 0V to 1.8V VCM, MIXER_VGATE = 23.89 VCM + 81, and for a >
1.8V to 2.6V VCM, MIXER_VGATE = 23.75 VCM + 1.25.

Fixes: da35a7b526d9 ("iio: frequency: admv1013: add support for ADMV1013")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
 drivers/iio/frequency/admv1013.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/frequency/admv1013.c b/drivers/iio/frequency/admv1013.c
index 9bf8337806fc..df29f1216b9a 100644
--- a/drivers/iio/frequency/admv1013.c
+++ b/drivers/iio/frequency/admv1013.c
@@ -348,9 +348,9 @@ static int admv1013_update_mixer_vgate(struct admv1013_state *st)
 
 	vcm = regulator_get_voltage(st->reg);
 
-	if (vcm < 1800000)
+	if (vcm <= 1800000)
 		mixer_vgate = (2389 * vcm / 1000000 + 8100) / 100;
-	else if (vcm > 1800000 && vcm < 2600000)
+	else if (vcm > 1800000 && vcm <= 2600000)
 		mixer_vgate = (2375 * vcm / 1000000 + 125) / 100;
 	else
 		return -EINVAL;
-- 
2.41.0