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From 3c58ea643c31273b467400c04f3b1ed04fc0da2d Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Mon, 3 Jul 2017 02:43:21 +0300
Subject: [PATCH] gpio: max732x: set gpio ouput-low at init
Set all gpio output-low at init state instead
chip defaults.
This allows to avoid preserved values during resaet
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
---
drivers/gpio/gpio-max732x.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c
index b6fc8c5..4a2669f 100644
--- a/drivers/gpio/gpio-max732x.c
+++ b/drivers/gpio/gpio-max732x.c
@@ -680,6 +680,10 @@ static int max732x_probe(struct i2c_client *client,
mutex_init(&chip->lock);
+ /* set all ports output-low at init state */
+ max732x_writeb(chip, 0, 0);
+ max732x_writeb(chip, 1, 0);
+
ret = max732x_readb(chip, is_group_a(chip, 0), &chip->reg_out[0]);
if (ret)
goto out_failed;
--
1.9.1
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