Applied "regulator: act8945a-regulator: add shutdown function" to the regulator tree

Applied "regulator: act8945a-regulator: add shutdown function" to the regulator tree

[Mark Brown]

The patch

   regulator: act8945a-regulator: add shutdown function

has been applied to the regulator tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

From b5ebba46e694a6e8e4322a80bb2a5a448f8f8b04 Mon Sep 17 00:00:00 2001
From: Claudiu Beznea <claudiu.beznea@microchip.com>
Date: Tue, 11 Dec 2018 15:56:50 +0000
Subject: [PATCH] regulator: act8945a-regulator: add shutdown function

Implement shutdown method to make sure the PMIC will not enter the suspend
state when the system is shutdown.

This work is based on work done by Borris Brezillon on [1].

[1] https://www.spinics.net/lists/kernel/msg2942960.html

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 drivers/regulator/act8945a-regulator.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/regulator/act8945a-regulator.c b/drivers/regulator/act8945a-regulator.c
index f4d60743efb3..90572b6370c6 100644
--- a/drivers/regulator/act8945a-regulator.c
+++ b/drivers/regulator/act8945a-regulator.c
@@ -339,12 +339,23 @@ static int act8945a_suspend(struct device *pdev)
 
 SIMPLE_DEV_PM_OPS(act8945a_pm, act8945a_suspend, NULL);
 
+static void act8945a_pmic_shutdown(struct platform_device *pdev)
+{
+	struct act8945a_pmic *act8945a = platform_get_drvdata(pdev);
+
+	/*
+	 * Ask the PMIC to shutdown everything on the next PWRHLD transition.
+	 */
+	regmap_write(act8945a->regmap, ACT8945A_SYS_CTRL, 0x0);
+}
+
 static struct platform_driver act8945a_pmic_driver = {
 	.driver = {
 		.name = "act8945a-regulator",
 		.pm = &act8945a_pm,
 	},
 	.probe = act8945a_pmic_probe,
+	.shutdown = act8945a_pmic_shutdown,
 };
 module_platform_driver(act8945a_pmic_driver);
 
-- 
2.19.0.rc2