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regulator: refgen: add support for proxy consumers

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Add support to enforce proxy consumer requests defined in device
tree for refgen devices.  These can be used to ensure that
regulators are not accidentally disabled or scaled down
before all consumers have had a chance to make their own
requests.

Change-Id: I57ce2ac4162c29e749e1cd915241593d4ad262dc
Signed-off-by: David Collins <collinsd@codeaurora.org>
This commit is contained in:
David Collins 2020-01-16 16:17:27 -08:00
parent 3a4e5978ef
commit b352015375
1 changed files with 7 additions and 1 deletions
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8
drivers/regulator/refgen.c
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@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2017, 2019, The Linux Foundation. All rights reserved. */
/* Copyright (c) 2017, 2019-2020, The Linux Foundation. All rights reserved. */
#include <linux/bitops.h>
#include <linux/err.h>
@ -14,6 +14,7 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/proxy-consumer.h>
#define REFGEN_REG_BIAS_EN 0x08
#define REFGEN_BIAS_EN_MASK GENMASK(2, 0)
@ -204,6 +205,10 @@ static int refgen_probe(struct platform_device *pdev)
return rc;
}
rc = devm_regulator_proxy_consumer_register(dev, dev->of_node);
if (rc)
dev_err(dev, "failed to register proxy consumer, rc=%d\n", rc);
return 0;
}
@ -212,6 +217,7 @@ static struct platform_driver refgen_driver = {
.driver = {
.name = "qcom,refgen-regulator",
.of_match_table = refgen_match_table,
.sync_state = regulator_proxy_consumer_sync_state,
},
};