linux-kernel - [PATCH v4 09/19] iio: accel: bma220: turn power supplies on

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Message-Id: <20251005-b4-bma220_improvements-v4-9-0f449ba31585@subdimension.ro>
Date: Sun, 05 Oct 2025 16:12:18 +0300
From: Petre Rodan <petre.rodan@...dimension.ro>
To: Jonathan Cameron <jic23@...nel.org>, 
 David Lechner <dlechner@...libre.com>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Andy Shevchenko <andy@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v4 09/19] iio: accel: bma220: turn power supplies on

Add devm_regulator_bulk_get_enable() to device probe().

Signed-off-by: Petre Rodan <petre.rodan@...dimension.ro>
---
v1->v2 split from larger patch
v2->v3 change commit desc (Jonathan)
v4 dev ptr (Andy)
---
 drivers/iio/accel/bma220_core.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/iio/accel/bma220_core.c b/drivers/iio/accel/bma220_core.c
index 00fe1064486aa469f7ad15593027c7ec86197365..319a3d6867ee5ac2da64c9baf02a760865302ee8 100644
--- a/drivers/iio/accel/bma220_core.c
+++ b/drivers/iio/accel/bma220_core.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/pm.h>
+#include <linux/regulator/consumer.h>
 #include <linux/types.h>
 #include <linux/spi/spi.h>
 
@@ -230,6 +231,12 @@ static int bma220_init(struct spi_device *spi)
 {
 	int ret;
 	struct device *dev = &spi->dev;
+	static const char * const regulator_names[] = { "vddd", "vddio", "vdda" };
+
+	ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulator_names),
+					     regulator_names);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
 
 	ret = bma220_read_reg(spi, BMA220_REG_ID);
 	if (ret < 0)

-- 
2.49.1