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From:   Mike Looijmans <mike.looijmans@topic.nl>
To:     devicetree@vger.kernel.org, linux-input@vger.kernel.org
CC:     Mike Looijmans <mike.looijmans@topic.nl>,
        Dmitry Torokhov <dmitry.torokhov@gmail.com>,
        =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>, linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/2] Input: exc3000 - Support power supply regulators
Date:   Fri, 7 Jul 2023 15:10:42 +0200
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Add power supply regulator support to the exc3000 devices.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>

---

Changes in v2:
Add missing "return" statement
Use devm_regulator_get_enable without _optional

 drivers/input/touchscreen/exc3000.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/input/touchscreen/exc3000.c b/drivers/input/touchscree=
n/exc3000.c
index 4af4c1e5d0da..e3f6d21b3c1b 100644
--- a/drivers/input/touchscreen/exc3000.c
+++ b/drivers/input/touchscreen/exc3000.c
@@ -18,6 +18,7 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/regulator/consumer.h>
 #include <linux/sizes.h>
 #include <linux/timer.h>
 #include <asm/unaligned.h>
@@ -360,6 +361,12 @@ static int exc3000_probe(struct i2c_client *client)
 	if (IS_ERR(data->reset))
 		return PTR_ERR(data->reset);
=20
+	/* For proper reset sequence, enable power while reset asserted */
+	error =3D devm_regulator_get_enable(&client->dev, "vdd");
+	if (error && error !=3D -ENODEV)
+		return dev_err_probe(&client->dev, error,
+				     "failed to request vdd regulator\n");
+
 	if (data->reset) {
 		msleep(EXC3000_RESET_MS);
 		gpiod_set_value_cansleep(data->reset, 0);
--=20
2.17.1


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