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From: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
To: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>,
	Matti Vaittinen <mazziesaccount@gmail.com>
Cc: Mark Brown <broonie@kernel.org>,
	Kees Cook <keescook@chromium.org>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Zhang Rui <rui.zhang@intel.com>,
	Guenter Roeck <linux@roeck-us.net>,
	"agross@kernel.org" <agross@kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	linux-power <linux-power@fi.rohmeurope.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-renesas-soc@vger.kernel.org" 
	<linux-renesas-soc@vger.kernel.org>,
	"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
	"bjorn.andersson@linaro.org" <bjorn.andersson@linaro.org>,
	"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>
Subject: [PATCH v8 04/10] regulator: add warning flags
Date: Mon, 19 Apr 2021 14:49:52 +0300
Message-ID: <8085635fc4b6586ae41f7fa4a3cd1d3374bc9e6d.1618832466.git.matti.vaittinen@fi.rohmeurope.com> (raw)
In-Reply-To: <cover.1618832466.git.matti.vaittinen@fi.rohmeurope.com>

Add 'warning' level events and error flags to regulator core.
Current regulator core notifications are used to inform consumers
about errors where HW is misbehaving in such way it is assumed to
be broken/unrecoverable.

There are PMICs which are designed for system(s) that may have use
for regulator indications sent before HW is damaged so that some
board/consumer specific recovery-event can be performed while
continuing most of the normal operations.

Add new WARNING level events and notifications to be used for
that purpose.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
---
No changes since RFC-v2
---
 include/linux/regulator/consumer.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index 20e84a84fb77..f72ca73631be 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -119,6 +119,16 @@ struct regulator_dev;
 #define REGULATOR_EVENT_PRE_DISABLE		0x400
 #define REGULATOR_EVENT_ABORT_DISABLE		0x800
 #define REGULATOR_EVENT_ENABLE			0x1000
+/*
+ * Following notifications should be emitted only if detected condition
+ * is such that the HW is likely to still be working but consumers should
+ * take a recovery action to prevent problems esacalating into errors.
+ */
+#define REGULATOR_EVENT_UNDER_VOLTAGE_WARN	0x2000
+#define REGULATOR_EVENT_OVER_CURRENT_WARN	0x4000
+#define REGULATOR_EVENT_OVER_VOLTAGE_WARN	0x8000
+#define REGULATOR_EVENT_OVER_TEMP_WARN		0x10000
+#define REGULATOR_EVENT_WARN_MASK		0x1E000
 
 /*
  * Regulator errors that can be queried using regulator_get_error_flags
@@ -138,6 +148,10 @@ struct regulator_dev;
 #define REGULATOR_ERROR_FAIL			BIT(4)
 #define REGULATOR_ERROR_OVER_TEMP		BIT(5)
 
+#define REGULATOR_ERROR_UNDER_VOLTAGE_WARN	BIT(6)
+#define REGULATOR_ERROR_OVER_CURRENT_WARN	BIT(7)
+#define REGULATOR_ERROR_OVER_VOLTAGE_WARN	BIT(8)
+#define REGULATOR_ERROR_OVER_TEMP_WARN		BIT(9)
 
 /**
  * struct pre_voltage_change_data - Data sent with PRE_VOLTAGE_CHANGE event
-- 
2.25.4


-- 
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =] 

  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-19 11:46 [PATCH v8 00/10] Extend regulator notification support Matti Vaittinen
2021-04-19 11:48 ` [PATCH v8 01/10] dt_bindings: Add protection limit properties Matti Vaittinen
2021-04-19 11:48 ` [PATCH v8 02/10] reboot: Add hardware protection power-off Matti Vaittinen
2021-04-19 11:49 ` [PATCH v8 03/10] thermal: Use generic HW-protection shutdown API Matti Vaittinen
2021-04-22  8:10   ` Daniel Lezcano
2021-04-22  9:27     ` Vaittinen, Matti
2021-04-19 11:49 ` Matti Vaittinen [this message]
2021-04-19 11:50 ` [PATCH v8 05/10] regulator: IRQ based event/error notification helpers Matti Vaittinen
2021-04-19 11:50 ` [PATCH v8 06/10] regulator: add property parsing and callbacks to set protection limits Matti Vaittinen
2021-04-19 11:50 ` [PATCH v8 07/10] dt-bindings: regulator: bd9576 add FET ON-resistance for OCW Matti Vaittinen
2021-04-19 11:51 ` [PATCH v8 08/10] regulator: bd9576: Support error reporting Matti Vaittinen
2021-04-19 11:51 ` [PATCH v8 09/10] regulator: bd9576: Fix the driver name in id table Matti Vaittinen
2021-04-19 11:52 ` [PATCH v8 10/10] MAINTAINERS: Add reviewer for regulator irq_helpers Matti Vaittinen

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