From 4f86a724e82c0b74d9ffb7b65f8ae4b011dd0b03 Mon Sep 17 00:00:00 2001
From: Patrick Delaunay <patrick.delaunay@st.com>
Date: Thu, 15 Nov 2018 13:45:31 +0100
Subject: [PATCH] power: regulator: denied disable on always-on regulator
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Don't disable regulator which are tagged as "regulator-always-on" in DT.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jack Mitchell <jack@embed.me.uk>
Tested-by: Jack Mitchell <jack@embed.me.uk>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Richard Röjfors <richard@puffinpack.se>
Tested-by: Richard Röjfors <richard@puffinpack.se>
Reviewed-by: Felix Brack <fb@ltec.ch>
Tested-by: Felix Brack <fb@ltec.ch>
---
drivers/power/regulator/regulator-uclass.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/power/regulator/regulator-uclass.c b/drivers/power/regulator/regulator-uclass.c
index 4da8e43259..4511625ff2 100644
--- a/drivers/power/regulator/regulator-uclass.c
+++ b/drivers/power/regulator/regulator-uclass.c
@@ -106,10 +106,15 @@ int regulator_get_enable(struct udevice *dev)
int regulator_set_enable(struct udevice *dev, bool enable)
{
const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+ struct dm_regulator_uclass_platdata *uc_pdata;
if (!ops || !ops->set_enable)
return -ENOSYS;
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!enable && uc_pdata->always_on)
+ return -EACCES;
+
return ops->set_enable(dev, enable);
}
--
2.39.5